Kran dynamisk belastningsberegner | P_d = \u03c6\u00b7(Q+Q_h+G_t)<\/title>\n <style>\n \/* all styles are strictly scoped inside #calculator *\/\n #calculator {\n --primary-color: #0a3487;\n --primary-hover: #F58423;\n --error-color: #e53935;\n --bg-color: #EAEEF7;\n --text-color: #4a4a4a;\n \n display: block;\n width: 100%;\n background: var(--bg-color);\n font-family: 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;\n color: var(--text-color);\n }\n \n \/* container for PC max-width & padding *\/\n #calculator .calculator-container {\n max-width: 545px;\n padding: 30px;\n margin: 0 auto;\n background: var(--bg-color);\n box-sizing: border-box;\n }\n \n \/* typography *\/\n #calculator .calculator-title {\n font-size: 24px;\n font-weight: 600;\n margin: 0 0 4px 0;\n color: var(--primary-color);\n letter-spacing: -0.2px;\n }\n \n #calculator .calculator-subtitle {\n font-size: 14px;\n margin: 0 0 24px 0;\n font-family: monospace;\n background: rgba(10,52,135,0.08);\n display: inline-block;\n padding: 4px 12px;\n border-radius: 0;\n color: var(--primary-color);\n }\n \n \/* input groups *\/\n #calculator .input-group {\n margin-bottom: 20px;\n width: 100%;\n position: relative;\n }\n \n #calculator label {\n display: block;\n font-size: 14px;\n font-weight: 500;\n margin-bottom: 6px;\n color: var(--text-color);\n }\n \n #calculator .var-symbol {\n font-family: monospace;\n font-weight: 700;\n background: rgba(0,0,0,0.04);\n padding: 0px 4px;\n border-radius: 0;\n margin-left: 4px;\n }\n \n \/* wrapper for input + inline unit (unit placed inside input field on the right) *\/\n #calculator .input-unit-wrapper {\n position: relative;\n width: 100%;\n }\n \n #calculator .input-unit-wrapper .calculator-input {\n width: 100%;\n padding-right: 104px;\n }\n \n #calculator .inline-unit {\n position: absolute;\n right: 1px;\n top: 1px;\n bottom: 1px;\n display: flex;\n align-items: center;\n justify-content: center;\n font-size: 14px;\n font-weight: 500;\n color: #aaaaaa;\n background: transparent;\n padding: 0 8px;\n height: auto;\n line-height: 1;\n white-space: nowrap;\n font-family: monospace;\n pointer-events: none;\n box-sizing: border-box;\n }\n \n \/* select styling \u2014 no unit after select *\/\n #calculator .calculator-input,\n #calculator .calculator-select {\n width: 100%;\n height: 36px;\n padding: 0 12px;\n font-size: 16px;\n border: 1px solid #ccc;\n border-radius: 0;\n background: white;\n font-family: 'Segoe UI', 'SF Mono', monospace;\n color: #333;\n transition: all 0.2s ease;\n box-sizing: border-box;\n }\n \n #calculator .calculator-select {\n cursor: pointer;\n appearance: none;\n background-image: url('data:image\/svg+xml;utf8,<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"%234a4a4a\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><polyline points=\"6 9 12 15 18 9\"><\/polyline><\/svg>');\n background-repeat: no-repeat;\n background-position: right 12px center;\n background-size: 14px;\n }\n \n \/* ensure dropdown options have consistent font and spacing *\/\n #calculator .calculator-select option {\n font-size: 14px;\n padding: 8px;\n font-family: 'Segoe UI', 'SF Mono', monospace;\n line-height: 1.4;\n color: #333;\n }\n \n #calculator .calculator-input:focus,\n #calculator .calculator-select:focus {\n outline: none;\n border: 2px solid var(--primary-color);\n padding: 0 11px;\n height: 36px;\n }\n \n #calculator .input-unit-wrapper .calculator-input:focus {\n padding-right: 103px;\n }\n \n \/* error state: border 2px solid error-color *\/\n #calculator .calculator-input.error-input,\n #calculator .calculator-select.error-input {\n border: 2px solid var(--error-color);\n padding: 0 11px;\n height: 36px;\n }\n \n #calculator .input-unit-wrapper .calculator-input.error-input {\n padding-right: 103px;\n }\n \n \/* error message styling *\/\n #calculator .error-msg {\n font-size: 12px;\n color: var(--error-color);\n margin-top: 5px;\n display: none;\n line-height: 1.2;\n }\n \n #calculator .error-msg.visible {\n display: block;\n }\n \n \/* result area *\/\n #calculator .result-area {\n background: white;\n margin: 20px 0 24px 0;\n padding: 18px 16px;\n text-align: center;\n border-left: 4px solid var(--primary-color);\n box-shadow: 0 1px 3px rgba(0,0,0,0.05);\n }\n \n #calculator .result-label {\n font-size: 14px;\n font-weight: 500;\n text-transform: uppercase;\n letter-spacing: 1px;\n color: var(--text-color);\n margin-bottom: 8px;\n }\n \n #calculator .result-value {\n font-size: 40px;\n font-weight: 800;\n font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;\n color: var(--primary-color);\n line-height: 1.1;\n word-break: break-word;\n }\n \n #calculator .calculation-detail {\n font-size: 12px;\n font-family: monospace;\n color: #6b7280;\n margin-top: 8px;\n border-top: 1px solid #ececec;\n padding-top: 6px;\n }\n \n \/* button group: horizontal flex on PC *\/\n #calculator .button-group {\n display: flex;\n flex-direction: row;\n gap: 16px;\n margin-top: 8px;\n }\n \n #calculator button {\n flex: 1;\n height: 36px;\n font-size: 14px;\n font-weight: 600;\n border: none;\n border-radius: 0;\n cursor: pointer;\n transition: all 0.2s ease;\n font-family: inherit;\n }\n \n #calculator .btn-primary {\n background: var(--primary-color);\n color: white;\n }\n \n #calculator .btn-primary:hover {\n background: var(--primary-hover);\n }\n \n #calculator .btn-secondary {\n background: #6c757d;\n color: white;\n }\n \n #calculator .btn-secondary:hover {\n background: #5a6268;\n }\n \n \/* mobile responsiveness (rem based, following spec) *\/\n @media (max-width: 768px) {\n #calculator .calculator-container {\n padding: 20px;\n max-width: 100%;\n }\n #calculator .calculator-input,\n #calculator .calculator-select,\n #calculator button,\n #calculator .inline-unit {\n height: 0.7rem;\n font-size: 0.28rem;\n line-height: 0.7rem;\n }\n #calculator .calculator-input,\n #calculator .calculator-select {\n height: 0.7rem;\n padding: 0 0.2rem;\n font-size: 0.28rem;\n }\n #calculator .input-unit-wrapper .calculator-input {\n padding-right: 1.8rem;\n }\n #calculator .calculator-input:focus,\n #calculator .calculator-select:focus {\n padding: 0 0.18rem;\n height: 0.7rem;\n }\n #calculator .input-unit-wrapper .calculator-input:focus {\n padding-right: 1.78rem;\n }\n #calculator .calculator-input.error-input,\n #calculator .calculator-select.error-input {\n padding: 0 0.18rem;\n height: 0.7rem;\n }\n #calculator .input-unit-wrapper .calculator-input.error-input {\n padding-right: 1.78rem;\n }\n #calculator label {\n font-size: 0.28rem;\n }\n #calculator .result-value {\n font-size: 0.7rem;\n }\n #calculator .result-label,\n #calculator .calculation-detail {\n font-size: 0.24rem;\n }\n #calculator .btn-primary,\n #calculator .btn-secondary {\n font-size: 0.28rem;\n height: 0.7rem;\n }\n #calculator .button-group {\n flex-direction: column;\n gap: 12px;\n }\n #calculator button {\n width: 100%;\n }\n #calculator .calculator-title {\n font-size: 0.5rem;\n }\n #calculator .calculator-subtitle {\n font-size: 0.24rem;\n }\n #calculator .inline-unit {\n font-size: 0.28rem;\n padding: 0 0.2rem;\n }\n \/* option text slightly smaller on mobile but consistent *\/\n #calculator .calculator-select option {\n font-size: 0.28rem;\n }\n }\n \n \/* error priority: error border overrides focus *\/\n #calculator .calculator-input.error-input:focus,\n #calculator .calculator-select.error-input:focus {\n border: 2px solid var(--error-color);\n }\n \n \/* remove any default spinner on number input *\/\n #calculator .calculator-input[type=\"number\"] {\n -moz-appearance: textfield;\n }\n #calculator .calculator-input[type=\"number\"]::-webkit-inner-spin-button,\n #calculator .calculator-input[type=\"number\"]::-webkit-outer-spin-button {\n -webkit-appearance: none;\n margin: 0;\n }\n <\/style>\n<\/head>\n<body>\n<div id=\"calculator\">\n <div class=\"calculator-container\">\n \n \n \n <div class=\"input-group\">\n <label for=\"calculator-phi\">Dynamisk faktor <span class=\"var-symbol\">\u03c6<\/span><\/label>\n <select id=\"calculator-phi\" class=\"calculator-select\">\n <option value=\"1.1\">\ud83d\udd38 Lav hastighed \/ let belastning \/ pr\u00e6cisionskontrol \u2192 \u03c6 = 1,10<\/option>\n <option value=\"1.2\">\ud83d\udd38 Konventionel industriel (let) \u2192 \u03c6 = 1,20<\/option>\n <option value=\"1.25\" selected>\ud83d\udd38 Konventionel industriel (medium) \u2192 \u03c6 = 1,25<\/option>\n <option value=\"1.3\">\ud83d\udd38 Konventionel industri (tung) \u2192 \u03c6 = 1,30<\/option>\n <option value=\"1.4\">\ud83d\udd38 Tung belastning \/ kr\u00e6vende drift \u2192 \u03c6 = 1,40<\/option>\n <option value=\"1.5\">\ud83d\udd38H\u00f8j slagkraft \/ fr\u00e6sebelastning \u2192 \u03c6 = 1,50<\/option>\n <option value=\"1.6\">\ud83d\udd38Ekstremt st\u00f8d \/ h\u00e5rd belastning \u2192 \u03c6 = 1,60<\/option>\n <\/select>\n <div class=\"error-msg\" id=\"error-phi\"><\/div>\n <\/div>\n\n \n <div class=\"input-group\">\n <label for=\"calculator-ratedLoad\">Nominel belastning <span class=\"var-symbol\">Q<\/span><\/label>\n <div class=\"input-unit-wrapper\">\n <input type=\"number\" id=\"calculator-ratedLoad\" class=\"calculator-input\" placeholder=\"f.eks. 20,0\" step=\"any\" value=\"20.0\">\n <span class=\"inline-unit\">tons (t)<\/span>\n <\/div>\n <div class=\"error-msg\" id=\"error-ratedLoad\"><\/div>\n <\/div>\n\n \n <div class=\"input-group\">\n <label for=\"calculator-hookWeight\">Krog- og fastg\u00f8relsesmasse <span class=\"var-symbol\">Q<sub>h<\/sub><\/span><\/label>\n <div class=\"input-unit-wrapper\">\n <input type=\"number\" id=\"calculator-hookWeight\" class=\"calculator-input\" placeholder=\"f.eks. 0,6\" step=\"any\" value=\"0.6\">\n <span class=\"inline-unit\">tons (t)<\/span>\n <\/div>\n <div class=\"error-msg\" id=\"error-hookWeight\"><\/div>\n <\/div>\n\n \n <div class=\"input-group\">\n <label for=\"calculator-trolleyWeight\">Trolley egenv\u00e6gt <span class=\"var-symbol\">G<sub>t<\/sub><\/span><\/label>\n <div class=\"input-unit-wrapper\">\n <input type=\"number\" id=\"calculator-trolleyWeight\" class=\"calculator-input\" placeholder=\"f.eks. 5,4\" step=\"any\" value=\"5.4\">\n <span class=\"inline-unit\">tons (t)<\/span>\n <\/div>\n <div class=\"error-msg\" id=\"error-trolleyWeight\"><\/div>\n <\/div>\n\n \n <div class=\"result-area\">\n <div class=\"result-label\">Dynamisk belastningsresultat <span>P<sub>d<\/sub><\/span><\/div>\n <div class=\"result-value\" id=\"calculator-result\">\u2014 kN<\/div>\n <div class=\"calculation-detail\" id=\"calc-detail\"><\/div>\n <\/div>\n\n \n <div class=\"button-group\">\n <button id=\"calculator-calcBtn\" class=\"btn-primary\">Beregne<\/button>\n <button id=\"calculator-resetBtn\" class=\"btn-secondary\">Nulstil<\/button>\n <\/div>\n <\/div>\n<\/div>\n\n<script>\n (function() {\n \/\/ DOM references\n const phiSelect = document.getElementById('calculator-phi');\n const ratedLoadInput = document.getElementById('calculator-ratedLoad');\n const hookWeightInput = document.getElementById('calculator-hookWeight');\n const trolleyWeightInput = document.getElementById('calculator-trolleyWeight');\n const calcBtn = document.getElementById('calculator-calcBtn');\n const resetBtn = document.getElementById('calculator-resetBtn');\n const resultSpan = document.getElementById('calculator-result');\n const calcDetailSpan = document.getElementById('calc-detail');\n \n \/\/ error message containers\n const errorPhi = document.getElementById('error-phi');\n const errorRated = document.getElementById('error-ratedLoad');\n const errorHook = document.getElementById('error-hookWeight');\n const errorTrolley = document.getElementById('error-trolleyWeight');\n \n \/\/ input fields for validation\n const inputFields = [\n { element: ratedLoadInput, errorDiv: errorRated, name: 'Rated load' },\n { element: hookWeightInput, errorDiv: errorHook, name: 'Hook & attachment mass' },\n { element: trolleyWeightInput, errorDiv: errorTrolley, name: 'Trolley self-weight' }\n ];\n const selectField = { element: phiSelect, errorDiv: errorPhi, name: 'Dynamic factor' };\n \n \/\/ conversion factor: tonnes -> kN\n const TON_TO_KN = 9.80665;\n \n \/\/ Helper: clear error for a single input (remove class, hide message)\n function clearErrorForInput(inputEl, errorDiv) {\n if (inputEl) inputEl.classList.remove('error-input');\n if (errorDiv) errorDiv.classList.remove('visible');\n }\n \n \/\/ set error for single input\n function setErrorForInput(inputEl, errorDiv, message) {\n if (inputEl) inputEl.classList.add('error-input');\n if (errorDiv) {\n errorDiv.textContent = message || 'Invalid value';\n errorDiv.classList.add('visible');\n }\n }\n \n \/\/ clear all errors\n function clearAllErrors() {\n inputFields.forEach(field => {\n clearErrorForInput(field.element, field.errorDiv);\n });\n clearErrorForInput(selectField.element, selectField.errorDiv);\n }\n \n \/\/ validate single numeric input (non-empty, valid number >=0)\n function validateSingleInput(value, fieldName) {\n if (value === undefined || value === null || value === '') {\n return { valid: false, message: `${fieldName} cannot be empty.` };\n }\n const num = parseFloat(value);\n if (isNaN(num)) {\n return { valid: false, message: `${fieldName} must be a valid number.` };\n }\n if (num < 0) {\n return { valid: false, message: `${fieldName} cannot be negative.` };\n }\n return { valid: true, value: num };\n }\n \n \/\/ validate phi select\n function validatePhi() {\n const phiVal = phiSelect.value;\n const num = parseFloat(phiVal);\n if (isNaN(num)) {\n return { valid: false, message: 'Dynamic factor must be a valid number.' };\n }\n if (num <= 0) {\n return { valid: false, message: '\u03c6 must be greater than 0.' };\n }\n return { valid: true, value: num };\n }\n \n \/\/ main validation routine\n function validateAllInputs() {\n let isValid = true;\n \n \/\/ Validate rated load\n const ratedRaw = ratedLoadInput.value;\n const ratedCheck = validateSingleInput(ratedRaw, 'Rated load');\n if (!ratedCheck.valid) {\n setErrorForInput(ratedLoadInput, errorRated, ratedCheck.message);\n isValid = false;\n } else {\n clearErrorForInput(ratedLoadInput, errorRated);\n }\n \n \/\/ Validate hook weight\n const hookRaw = hookWeightInput.value;\n const hookCheck = validateSingleInput(hookRaw, 'Hook & attachment mass');\n if (!hookCheck.valid) {\n setErrorForInput(hookWeightInput, errorHook, hookCheck.message);\n isValid = false;\n } else {\n clearErrorForInput(hookWeightInput, errorHook);\n }\n \n \/\/ Validate trolley weight\n const trolleyRaw = trolleyWeightInput.value;\n const trolleyCheck = validateSingleInput(trolleyRaw, 'Trolley self-weight');\n if (!trolleyCheck.valid) {\n setErrorForInput(trolleyWeightInput, errorTrolley, trolleyCheck.message);\n isValid = false;\n } else {\n clearErrorForInput(trolleyWeightInput, errorTrolley);\n }\n \n \/\/ Validate phi\n const phiCheck = validatePhi();\n if (!phiCheck.valid) {\n setErrorForInput(phiSelect, errorPhi, phiCheck.message);\n isValid = false;\n } else {\n clearErrorForInput(phiSelect, errorPhi);\n }\n \n if (isValid) {\n return {\n valid: true,\n Q: parseFloat(ratedLoadInput.value),\n Qh: parseFloat(hookWeightInput.value),\n Gt: parseFloat(trolleyWeightInput.value),\n phi: parseFloat(phiSelect.value)\n };\n } else {\n return { valid: false };\n }\n }\n \n \/\/ compute and update result (2 decimals)\n function computeAndDisplay() {\n const validation = validateAllInputs();\n if (!validation.valid) {\n resultSpan.textContent = '-- kN';\n calcDetailSpan.textContent = '';\n return;\n }\n \n const { Q, Qh, Gt, phi } = validation;\n const sumTon = Q + Qh + Gt;\n const dynamicTonForce = phi * sumTon;\n const dynamicKN = dynamicTonForce * TON_TO_KN;\n const roundedKN = Math.round(dynamicKN * 100) \/ 100;\n resultSpan.textContent = roundedKN.toFixed(2) + ' kN';\n \n \/\/ detail expression: consistent formatting\n const sumFixed = sumTon.toFixed(3);\n const phiFixed = phi.toFixed(3);\n calcDetailSpan.innerHTML = `${phiFixed} \u00d7 (${Q.toFixed(2)} + ${Qh.toFixed(2)} + ${Gt.toFixed(2)}) t = ${phiFixed} \u00d7 ${sumFixed} t = ${dynamicTonForce.toFixed(3)} t \u2192 ${roundedKN.toFixed(2)} kN`;\n }\n \n \/\/ reset all inputs to default values, clear errors & reset result\n function resetCalculator() {\n ratedLoadInput.value = '20.0';\n hookWeightInput.value = '0.6';\n trolleyWeightInput.value = '5.4';\n phiSelect.value = '1.25'; \/\/ medium duty default\n \n clearAllErrors();\n \n \/\/ reset result display\n resultSpan.textContent = '-- kN';\n calcDetailSpan.textContent = '';\n \n \/\/ additionally, remove error classes from all inputs (already cleared, but ensure)\n inputFields.forEach(field => {\n field.element.classList.remove('error-input');\n });\n if (phiSelect) phiSelect.classList.remove('error-input');\n }\n \n \/\/ setup dynamic error clearing on input\/change\n function setupDynamicErrorClearing() {\n ratedLoadInput.addEventListener('input', function() {\n clearErrorForInput(ratedLoadInput, errorRated);\n });\n hookWeightInput.addEventListener('input', function() {\n clearErrorForInput(hookWeightInput, errorHook);\n });\n trolleyWeightInput.addEventListener('input', function() {\n clearErrorForInput(trolleyWeightInput, errorTrolley);\n });\n phiSelect.addEventListener('change', function() {\n clearErrorForInput(phiSelect, errorPhi);\n });\n }\n \n \/\/ calculate action\n function onCalculate() {\n computeAndDisplay();\n }\n \n \/\/ reset action\n function onReset() {\n resetCalculator();\n }\n \n \/\/ initialization\n function init() {\n setupDynamicErrorClearing();\n calcBtn.addEventListener('click', onCalculate);\n resetBtn.addEventListener('click', onReset);\n \/\/ initial compute with default values (shows result on page load)\n computeAndDisplay();\n }\n \n if (document.readyState === 'loading') {\n document.addEventListener('DOMContentLoaded', init);\n } else {\n init();\n }\n })();\n<\/script>\n<\/body>\n<\/html>\n\n\n\n<h2 class=\"wp-block-heading\">Formel for dynamisk l\u00e6sning af kraner<\/h2>\n\n\n\n<p>P<sub>d<\/sub>=\u03c6(Q+Q<sub>h<\/sub>+G<sub>t<\/sub>)<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>P<sub>d<\/sub>Dynamisk belastning<\/li>\n\n\n\n<li>\u03c6: P\u00e5virkningsfaktor<\/li>\n\n\n\n<li>Q: Nominel belastning<\/li>\n\n\n\n<li>Q<sub>h<\/sub>V\u00e6gt p\u00e5 krog og l\u00f8fteudstyr<\/li>\n\n\n\n<li>G<sub>t<\/sub>Selvv\u00e6gt p\u00e5 vogn<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Noter<\/h2>\n\n\n\n<p>I faktisk krandrift er de kr\u00e6fter, der virker p\u00e5 den, altid st\u00f8rre end den statiske belastning. P\u00e5virkningen fra l\u00f8ft og start, inertien under bremsning, vibrationerne fra motoraccelerationen og de dynamiske kr\u00e6fter fra lastens svingning forst\u00e6rkes. Derfor skal disse faktorer ganges med en dynamisk belastningsfaktor under beregningerne.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>For lav hastighed, let belastning eller pr\u00e6cis styring er \u03c6=1,1<\/li>\n\n\n\n<li>For konventionelle industrikraner er \u03c6=1,2-1,3<\/li>\n\n\n\n<li>For tunge eller barske arbejdsforhold eller driftstilstande med betydelig p\u00e5virkning er \u03c6=1,4-1,6<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Anvendelige kraner<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>L\u00f8ftekraner<\/li>\n\n\n\n<li>Gnatry-kraner<\/li>\n\n\n\n<li>Elektriske l\u00f8bekatte\/taljer<\/li>\n\n\n\n<li>Havnekraner<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Ikke-anvendelig situation<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>H\u00f8jhastigheds roterende maskineri (turbiner, motorer)<\/li>\n\n\n\n<li>Pr\u00e6cisionsv\u00e6rkt\u00f8jsmaskine spindelsystem<\/li>\n\n\n\n<li>Intelligent hejsesystem (automatisk anti-svingningskontrol)<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"Kernev\u00e6rdien af kranens dynamiske belastningsberegner er at afspejle ekstra belastninger, der opst\u00e5r under den faktiske drift, i stedet for kun statisk l\u00f8ftev\u00e6gt, for pr\u00e6cist at kunne evaluere virkningerne af dynamisk adf\u00e6rd, s\u00e5som start af l\u00f8ftearbejde, bremsning, l\u00f8best\u00f8d, vibrationer og lastens svingninger, p\u00e5 krankonstruktioner og mekanismer. Den underst\u00f8tter effektivt styrke- og nedb\u00f8jningskontrol af hovedbj\u00e6lker, analyse af endebj\u00e6lketryk og skinnesp\u00e6nding, samt typevalg og sikkerhedsverifikation af motorer, bremser og andre kritiske komponenter, og fungerer som et vigtigt grundlag for strukturdesign, levetidsvurdering og sikkerhedscertificering af travers- og portalkraner i henhold til ISO-, FEM-, EN- og GB-standarder.","protected":false},"author":8,"featured_media":17038,"parent":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"single-onlinetools.php","format":"standard","meta":{"_acf_changed":false,"rank_math_lock_modified_date":false,"pgc_sgb_lightbox_settings":"","footnotes":""},"categories":[63],"tags":[],"class_list":["post-17030","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-other"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/posts\/17030"}],"collection":[{"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/comments?post=17030"}],"version-history":[{"count":6,"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/posts\/17030\/revisions"}],"predecessor-version":[{"id":17039,"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/posts\/17030\/revisions\/17039"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/media\/17038"}],"wp:attachment":[{"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/media?parent=17030"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/categories?post=17030"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/tags?post=17030"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":17030,"date":"2026-05-22T01:39:17","date_gmt":"2026-05-22T01:39:17","guid":{"rendered":"https:\/\/www.dgcrane.com\/?p=17030"},"modified":"2026-05-22T01:59:01","modified_gmt":"2026-05-22T01:59:01","slug":"crane-dynamic-loading-calculator","status":"publish","type":"post","link":"https:\/\/www.dgcrane.com\/da\/crane-dynamic-loading-calculator\/","title":{"rendered":"Kran dynamisk l\u00e6sseberegner"},"content":{"rendered":"\n\n\n \n \n Kran dynamisk belastningsberegner | P_d = \u03c6\u00b7(Q+Q_h+G_t)<\/title>\n <style>\n \/* all styles are strictly scoped inside #calculator *\/\n #calculator {\n --primary-color: #0a3487;\n --primary-hover: #F58423;\n --error-color: #e53935;\n --bg-color: #EAEEF7;\n --text-color: #4a4a4a;\n \n display: block;\n width: 100%;\n background: var(--bg-color);\n font-family: 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;\n color: var(--text-color);\n }\n \n \/* container for PC max-width & padding *\/\n #calculator .calculator-container {\n max-width: 545px;\n padding: 30px;\n margin: 0 auto;\n background: var(--bg-color);\n box-sizing: border-box;\n }\n \n \/* typography *\/\n #calculator .calculator-title {\n font-size: 24px;\n font-weight: 600;\n margin: 0 0 4px 0;\n color: var(--primary-color);\n letter-spacing: -0.2px;\n }\n \n #calculator .calculator-subtitle {\n font-size: 14px;\n margin: 0 0 24px 0;\n font-family: monospace;\n background: rgba(10,52,135,0.08);\n display: inline-block;\n padding: 4px 12px;\n border-radius: 0;\n color: var(--primary-color);\n }\n \n \/* input groups *\/\n #calculator .input-group {\n margin-bottom: 20px;\n width: 100%;\n position: relative;\n }\n \n #calculator label {\n display: block;\n font-size: 14px;\n font-weight: 500;\n margin-bottom: 6px;\n color: var(--text-color);\n }\n \n #calculator .var-symbol {\n font-family: monospace;\n font-weight: 700;\n background: rgba(0,0,0,0.04);\n padding: 0px 4px;\n border-radius: 0;\n margin-left: 4px;\n }\n \n \/* wrapper for input + inline unit (unit placed inside input field on the right) *\/\n #calculator .input-unit-wrapper {\n position: relative;\n width: 100%;\n }\n \n #calculator .input-unit-wrapper .calculator-input {\n width: 100%;\n padding-right: 104px;\n }\n \n #calculator .inline-unit {\n position: absolute;\n right: 1px;\n top: 1px;\n bottom: 1px;\n display: flex;\n align-items: center;\n justify-content: center;\n font-size: 14px;\n font-weight: 500;\n color: #aaaaaa;\n background: transparent;\n padding: 0 8px;\n height: auto;\n line-height: 1;\n white-space: nowrap;\n font-family: monospace;\n pointer-events: none;\n box-sizing: border-box;\n }\n \n \/* select styling \u2014 no unit after select *\/\n #calculator .calculator-input,\n #calculator .calculator-select {\n width: 100%;\n height: 36px;\n padding: 0 12px;\n font-size: 16px;\n border: 1px solid #ccc;\n border-radius: 0;\n background: white;\n font-family: 'Segoe UI', 'SF Mono', monospace;\n color: #333;\n transition: all 0.2s ease;\n box-sizing: border-box;\n }\n \n #calculator .calculator-select {\n cursor: pointer;\n appearance: none;\n background-image: url('data:image\/svg+xml;utf8,<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"%234a4a4a\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><polyline points=\"6 9 12 15 18 9\"><\/polyline><\/svg>');\n background-repeat: no-repeat;\n background-position: right 12px center;\n background-size: 14px;\n }\n \n \/* ensure dropdown options have consistent font and spacing *\/\n #calculator .calculator-select option {\n font-size: 14px;\n padding: 8px;\n font-family: 'Segoe UI', 'SF Mono', monospace;\n line-height: 1.4;\n color: #333;\n }\n \n #calculator .calculator-input:focus,\n #calculator .calculator-select:focus {\n outline: none;\n border: 2px solid var(--primary-color);\n padding: 0 11px;\n height: 36px;\n }\n \n #calculator .input-unit-wrapper .calculator-input:focus {\n padding-right: 103px;\n }\n \n \/* error state: border 2px solid error-color *\/\n #calculator .calculator-input.error-input,\n #calculator .calculator-select.error-input {\n border: 2px solid var(--error-color);\n padding: 0 11px;\n height: 36px;\n }\n \n #calculator .input-unit-wrapper .calculator-input.error-input {\n padding-right: 103px;\n }\n \n \/* error message styling *\/\n #calculator .error-msg {\n font-size: 12px;\n color: var(--error-color);\n margin-top: 5px;\n display: none;\n line-height: 1.2;\n }\n \n #calculator .error-msg.visible {\n display: block;\n }\n \n \/* result area *\/\n #calculator .result-area {\n background: white;\n margin: 20px 0 24px 0;\n padding: 18px 16px;\n text-align: center;\n border-left: 4px solid var(--primary-color);\n box-shadow: 0 1px 3px rgba(0,0,0,0.05);\n }\n \n #calculator .result-label {\n font-size: 14px;\n font-weight: 500;\n text-transform: uppercase;\n letter-spacing: 1px;\n color: var(--text-color);\n margin-bottom: 8px;\n }\n \n #calculator .result-value {\n font-size: 40px;\n font-weight: 800;\n font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;\n color: var(--primary-color);\n line-height: 1.1;\n word-break: break-word;\n }\n \n #calculator .calculation-detail {\n font-size: 12px;\n font-family: monospace;\n color: #6b7280;\n margin-top: 8px;\n border-top: 1px solid #ececec;\n padding-top: 6px;\n }\n \n \/* button group: horizontal flex on PC *\/\n #calculator .button-group {\n display: flex;\n flex-direction: row;\n gap: 16px;\n margin-top: 8px;\n }\n \n #calculator button {\n flex: 1;\n height: 36px;\n font-size: 14px;\n font-weight: 600;\n border: none;\n border-radius: 0;\n cursor: pointer;\n transition: all 0.2s ease;\n font-family: inherit;\n }\n \n #calculator .btn-primary {\n background: var(--primary-color);\n color: white;\n }\n \n #calculator .btn-primary:hover {\n background: var(--primary-hover);\n }\n \n #calculator .btn-secondary {\n background: #6c757d;\n color: white;\n }\n \n #calculator .btn-secondary:hover {\n background: #5a6268;\n }\n \n \/* mobile responsiveness (rem based, following spec) *\/\n @media (max-width: 768px) {\n #calculator .calculator-container {\n padding: 20px;\n max-width: 100%;\n }\n #calculator .calculator-input,\n #calculator .calculator-select,\n #calculator button,\n #calculator .inline-unit {\n height: 0.7rem;\n font-size: 0.28rem;\n line-height: 0.7rem;\n }\n #calculator .calculator-input,\n #calculator .calculator-select {\n height: 0.7rem;\n padding: 0 0.2rem;\n font-size: 0.28rem;\n }\n #calculator .input-unit-wrapper .calculator-input {\n padding-right: 1.8rem;\n }\n #calculator .calculator-input:focus,\n #calculator .calculator-select:focus {\n padding: 0 0.18rem;\n height: 0.7rem;\n }\n #calculator .input-unit-wrapper .calculator-input:focus {\n padding-right: 1.78rem;\n }\n #calculator .calculator-input.error-input,\n #calculator .calculator-select.error-input {\n padding: 0 0.18rem;\n height: 0.7rem;\n }\n #calculator .input-unit-wrapper .calculator-input.error-input {\n padding-right: 1.78rem;\n }\n #calculator label {\n font-size: 0.28rem;\n }\n #calculator .result-value {\n font-size: 0.7rem;\n }\n #calculator .result-label,\n #calculator .calculation-detail {\n font-size: 0.24rem;\n }\n #calculator .btn-primary,\n #calculator .btn-secondary {\n font-size: 0.28rem;\n height: 0.7rem;\n }\n #calculator .button-group {\n flex-direction: column;\n gap: 12px;\n }\n #calculator button {\n width: 100%;\n }\n #calculator .calculator-title {\n font-size: 0.5rem;\n }\n #calculator .calculator-subtitle {\n font-size: 0.24rem;\n }\n #calculator .inline-unit {\n font-size: 0.28rem;\n padding: 0 0.2rem;\n }\n \/* option text slightly smaller on mobile but consistent *\/\n #calculator .calculator-select option {\n font-size: 0.28rem;\n }\n }\n \n \/* error priority: error border overrides focus *\/\n #calculator .calculator-input.error-input:focus,\n #calculator .calculator-select.error-input:focus {\n border: 2px solid var(--error-color);\n }\n \n \/* remove any default spinner on number input *\/\n #calculator .calculator-input[type=\"number\"] {\n -moz-appearance: textfield;\n }\n #calculator .calculator-input[type=\"number\"]::-webkit-inner-spin-button,\n #calculator .calculator-input[type=\"number\"]::-webkit-outer-spin-button {\n -webkit-appearance: none;\n margin: 0;\n }\n <\/style>\n<\/head>\n<body>\n<div id=\"calculator\">\n <div class=\"calculator-container\">\n \n \n \n <div class=\"input-group\">\n <label for=\"calculator-phi\">Dynamisk faktor <span class=\"var-symbol\">\u03c6<\/span><\/label>\n <select id=\"calculator-phi\" class=\"calculator-select\">\n <option value=\"1.1\">\ud83d\udd38 Lav hastighed \/ let belastning \/ pr\u00e6cisionskontrol \u2192 \u03c6 = 1,10<\/option>\n <option value=\"1.2\">\ud83d\udd38 Konventionel industriel (let) \u2192 \u03c6 = 1,20<\/option>\n <option value=\"1.25\" selected>\ud83d\udd38 Konventionel industriel (medium) \u2192 \u03c6 = 1,25<\/option>\n <option value=\"1.3\">\ud83d\udd38 Konventionel industri (tung) \u2192 \u03c6 = 1,30<\/option>\n <option value=\"1.4\">\ud83d\udd38 Tung belastning \/ kr\u00e6vende drift \u2192 \u03c6 = 1,40<\/option>\n <option value=\"1.5\">\ud83d\udd38H\u00f8j slagkraft \/ fr\u00e6sebelastning \u2192 \u03c6 = 1,50<\/option>\n <option value=\"1.6\">\ud83d\udd38Ekstremt st\u00f8d \/ h\u00e5rd belastning \u2192 \u03c6 = 1,60<\/option>\n <\/select>\n <div class=\"error-msg\" id=\"error-phi\"><\/div>\n <\/div>\n\n \n <div class=\"input-group\">\n <label for=\"calculator-ratedLoad\">Nominel belastning <span class=\"var-symbol\">Q<\/span><\/label>\n <div class=\"input-unit-wrapper\">\n <input type=\"number\" id=\"calculator-ratedLoad\" class=\"calculator-input\" placeholder=\"f.eks. 20,0\" step=\"any\" value=\"20.0\">\n <span class=\"inline-unit\">tons (t)<\/span>\n <\/div>\n <div class=\"error-msg\" id=\"error-ratedLoad\"><\/div>\n <\/div>\n\n \n <div class=\"input-group\">\n <label for=\"calculator-hookWeight\">Krog- og fastg\u00f8relsesmasse <span class=\"var-symbol\">Q<sub>h<\/sub><\/span><\/label>\n <div class=\"input-unit-wrapper\">\n <input type=\"number\" id=\"calculator-hookWeight\" class=\"calculator-input\" placeholder=\"f.eks. 0,6\" step=\"any\" value=\"0.6\">\n <span class=\"inline-unit\">tons (t)<\/span>\n <\/div>\n <div class=\"error-msg\" id=\"error-hookWeight\"><\/div>\n <\/div>\n\n \n <div class=\"input-group\">\n <label for=\"calculator-trolleyWeight\">Trolley egenv\u00e6gt <span class=\"var-symbol\">G<sub>t<\/sub><\/span><\/label>\n <div class=\"input-unit-wrapper\">\n <input type=\"number\" id=\"calculator-trolleyWeight\" class=\"calculator-input\" placeholder=\"f.eks. 5,4\" step=\"any\" value=\"5.4\">\n <span class=\"inline-unit\">tons (t)<\/span>\n <\/div>\n <div class=\"error-msg\" id=\"error-trolleyWeight\"><\/div>\n <\/div>\n\n \n <div class=\"result-area\">\n <div class=\"result-label\">Dynamisk belastningsresultat <span>P<sub>d<\/sub><\/span><\/div>\n <div class=\"result-value\" id=\"calculator-result\">\u2014 kN<\/div>\n <div class=\"calculation-detail\" id=\"calc-detail\"><\/div>\n <\/div>\n\n \n <div class=\"button-group\">\n <button id=\"calculator-calcBtn\" class=\"btn-primary\">Beregne<\/button>\n <button id=\"calculator-resetBtn\" class=\"btn-secondary\">Nulstil<\/button>\n <\/div>\n <\/div>\n<\/div>\n\n<script>\n (function() {\n \/\/ DOM references\n const phiSelect = document.getElementById('calculator-phi');\n const ratedLoadInput = document.getElementById('calculator-ratedLoad');\n const hookWeightInput = document.getElementById('calculator-hookWeight');\n const trolleyWeightInput = document.getElementById('calculator-trolleyWeight');\n const calcBtn = document.getElementById('calculator-calcBtn');\n const resetBtn = document.getElementById('calculator-resetBtn');\n const resultSpan = document.getElementById('calculator-result');\n const calcDetailSpan = document.getElementById('calc-detail');\n \n \/\/ error message containers\n const errorPhi = document.getElementById('error-phi');\n const errorRated = document.getElementById('error-ratedLoad');\n const errorHook = document.getElementById('error-hookWeight');\n const errorTrolley = document.getElementById('error-trolleyWeight');\n \n \/\/ input fields for validation\n const inputFields = [\n { element: ratedLoadInput, errorDiv: errorRated, name: 'Rated load' },\n { element: hookWeightInput, errorDiv: errorHook, name: 'Hook & attachment mass' },\n { element: trolleyWeightInput, errorDiv: errorTrolley, name: 'Trolley self-weight' }\n ];\n const selectField = { element: phiSelect, errorDiv: errorPhi, name: 'Dynamic factor' };\n \n \/\/ conversion factor: tonnes -> kN\n const TON_TO_KN = 9.80665;\n \n \/\/ Helper: clear error for a single input (remove class, hide message)\n function clearErrorForInput(inputEl, errorDiv) {\n if (inputEl) inputEl.classList.remove('error-input');\n if (errorDiv) errorDiv.classList.remove('visible');\n }\n \n \/\/ set error for single input\n function setErrorForInput(inputEl, errorDiv, message) {\n if (inputEl) inputEl.classList.add('error-input');\n if (errorDiv) {\n errorDiv.textContent = message || 'Invalid value';\n errorDiv.classList.add('visible');\n }\n }\n \n \/\/ clear all errors\n function clearAllErrors() {\n inputFields.forEach(field => {\n clearErrorForInput(field.element, field.errorDiv);\n });\n clearErrorForInput(selectField.element, selectField.errorDiv);\n }\n \n \/\/ validate single numeric input (non-empty, valid number >=0)\n function validateSingleInput(value, fieldName) {\n if (value === undefined || value === null || value === '') {\n return { valid: false, message: `${fieldName} cannot be empty.` };\n }\n const num = parseFloat(value);\n if (isNaN(num)) {\n return { valid: false, message: `${fieldName} must be a valid number.` };\n }\n if (num < 0) {\n return { valid: false, message: `${fieldName} cannot be negative.` };\n }\n return { valid: true, value: num };\n }\n \n \/\/ validate phi select\n function validatePhi() {\n const phiVal = phiSelect.value;\n const num = parseFloat(phiVal);\n if (isNaN(num)) {\n return { valid: false, message: 'Dynamic factor must be a valid number.' };\n }\n if (num <= 0) {\n return { valid: false, message: '\u03c6 must be greater than 0.' };\n }\n return { valid: true, value: num };\n }\n \n \/\/ main validation routine\n function validateAllInputs() {\n let isValid = true;\n \n \/\/ Validate rated load\n const ratedRaw = ratedLoadInput.value;\n const ratedCheck = validateSingleInput(ratedRaw, 'Rated load');\n if (!ratedCheck.valid) {\n setErrorForInput(ratedLoadInput, errorRated, ratedCheck.message);\n isValid = false;\n } else {\n clearErrorForInput(ratedLoadInput, errorRated);\n }\n \n \/\/ Validate hook weight\n const hookRaw = hookWeightInput.value;\n const hookCheck = validateSingleInput(hookRaw, 'Hook & attachment mass');\n if (!hookCheck.valid) {\n setErrorForInput(hookWeightInput, errorHook, hookCheck.message);\n isValid = false;\n } else {\n clearErrorForInput(hookWeightInput, errorHook);\n }\n \n \/\/ Validate trolley weight\n const trolleyRaw = trolleyWeightInput.value;\n const trolleyCheck = validateSingleInput(trolleyRaw, 'Trolley self-weight');\n if (!trolleyCheck.valid) {\n setErrorForInput(trolleyWeightInput, errorTrolley, trolleyCheck.message);\n isValid = false;\n } else {\n clearErrorForInput(trolleyWeightInput, errorTrolley);\n }\n \n \/\/ Validate phi\n const phiCheck = validatePhi();\n if (!phiCheck.valid) {\n setErrorForInput(phiSelect, errorPhi, phiCheck.message);\n isValid = false;\n } else {\n clearErrorForInput(phiSelect, errorPhi);\n }\n \n if (isValid) {\n return {\n valid: true,\n Q: parseFloat(ratedLoadInput.value),\n Qh: parseFloat(hookWeightInput.value),\n Gt: parseFloat(trolleyWeightInput.value),\n phi: parseFloat(phiSelect.value)\n };\n } else {\n return { valid: false };\n }\n }\n \n \/\/ compute and update result (2 decimals)\n function computeAndDisplay() {\n const validation = validateAllInputs();\n if (!validation.valid) {\n resultSpan.textContent = '-- kN';\n calcDetailSpan.textContent = '';\n return;\n }\n \n const { Q, Qh, Gt, phi } = validation;\n const sumTon = Q + Qh + Gt;\n const dynamicTonForce = phi * sumTon;\n const dynamicKN = dynamicTonForce * TON_TO_KN;\n const roundedKN = Math.round(dynamicKN * 100) \/ 100;\n resultSpan.textContent = roundedKN.toFixed(2) + ' kN';\n \n \/\/ detail expression: consistent formatting\n const sumFixed = sumTon.toFixed(3);\n const phiFixed = phi.toFixed(3);\n calcDetailSpan.innerHTML = `${phiFixed} \u00d7 (${Q.toFixed(2)} + ${Qh.toFixed(2)} + ${Gt.toFixed(2)}) t = ${phiFixed} \u00d7 ${sumFixed} t = ${dynamicTonForce.toFixed(3)} t \u2192 ${roundedKN.toFixed(2)} kN`;\n }\n \n \/\/ reset all inputs to default values, clear errors & reset result\n function resetCalculator() {\n ratedLoadInput.value = '20.0';\n hookWeightInput.value = '0.6';\n trolleyWeightInput.value = '5.4';\n phiSelect.value = '1.25'; \/\/ medium duty default\n \n clearAllErrors();\n \n \/\/ reset result display\n resultSpan.textContent = '-- kN';\n calcDetailSpan.textContent = '';\n \n \/\/ additionally, remove error classes from all inputs (already cleared, but ensure)\n inputFields.forEach(field => {\n field.element.classList.remove('error-input');\n });\n if (phiSelect) phiSelect.classList.remove('error-input');\n }\n \n \/\/ setup dynamic error clearing on input\/change\n function setupDynamicErrorClearing() {\n ratedLoadInput.addEventListener('input', function() {\n clearErrorForInput(ratedLoadInput, errorRated);\n });\n hookWeightInput.addEventListener('input', function() {\n clearErrorForInput(hookWeightInput, errorHook);\n });\n trolleyWeightInput.addEventListener('input', function() {\n clearErrorForInput(trolleyWeightInput, errorTrolley);\n });\n phiSelect.addEventListener('change', function() {\n clearErrorForInput(phiSelect, errorPhi);\n });\n }\n \n \/\/ calculate action\n function onCalculate() {\n computeAndDisplay();\n }\n \n \/\/ reset action\n function onReset() {\n resetCalculator();\n }\n \n \/\/ initialization\n function init() {\n setupDynamicErrorClearing();\n calcBtn.addEventListener('click', onCalculate);\n resetBtn.addEventListener('click', onReset);\n \/\/ initial compute with default values (shows result on page load)\n computeAndDisplay();\n }\n \n if (document.readyState === 'loading') {\n document.addEventListener('DOMContentLoaded', init);\n } else {\n init();\n }\n })();\n<\/script>\n<\/body>\n<\/html>\n\n\n\n<h2 class=\"wp-block-heading\">Formel for dynamisk l\u00e6sning af kraner<\/h2>\n\n\n\n<p>P<sub>d<\/sub>=\u03c6(Q+Q<sub>h<\/sub>+G<sub>t<\/sub>)<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>P<sub>d<\/sub>Dynamisk belastning<\/li>\n\n\n\n<li>\u03c6: P\u00e5virkningsfaktor<\/li>\n\n\n\n<li>Q: Nominel belastning<\/li>\n\n\n\n<li>Q<sub>h<\/sub>V\u00e6gt p\u00e5 krog og l\u00f8fteudstyr<\/li>\n\n\n\n<li>G<sub>t<\/sub>Selvv\u00e6gt p\u00e5 vogn<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Noter<\/h2>\n\n\n\n<p>I faktisk krandrift er de kr\u00e6fter, der virker p\u00e5 den, altid st\u00f8rre end den statiske belastning. P\u00e5virkningen fra l\u00f8ft og start, inertien under bremsning, vibrationerne fra motoraccelerationen og de dynamiske kr\u00e6fter fra lastens svingning forst\u00e6rkes. Derfor skal disse faktorer ganges med en dynamisk belastningsfaktor under beregningerne.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>For lav hastighed, let belastning eller pr\u00e6cis styring er \u03c6=1,1<\/li>\n\n\n\n<li>For konventionelle industrikraner er \u03c6=1,2-1,3<\/li>\n\n\n\n<li>For tunge eller barske arbejdsforhold eller driftstilstande med betydelig p\u00e5virkning er \u03c6=1,4-1,6<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Anvendelige kraner<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>L\u00f8ftekraner<\/li>\n\n\n\n<li>Gnatry-kraner<\/li>\n\n\n\n<li>Elektriske l\u00f8bekatte\/taljer<\/li>\n\n\n\n<li>Havnekraner<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Ikke-anvendelig situation<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>H\u00f8jhastigheds roterende maskineri (turbiner, motorer)<\/li>\n\n\n\n<li>Pr\u00e6cisionsv\u00e6rkt\u00f8jsmaskine spindelsystem<\/li>\n\n\n\n<li>Intelligent hejsesystem (automatisk anti-svingningskontrol)<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"Kernev\u00e6rdien af kranens dynamiske belastningsberegner er at afspejle ekstra belastninger, der opst\u00e5r under den faktiske drift, i stedet for kun statisk l\u00f8ftev\u00e6gt, for pr\u00e6cist at kunne evaluere virkningerne af dynamisk adf\u00e6rd, s\u00e5som start af l\u00f8ftearbejde, bremsning, l\u00f8best\u00f8d, vibrationer og lastens svingninger, p\u00e5 krankonstruktioner og mekanismer. Den underst\u00f8tter effektivt styrke- og nedb\u00f8jningskontrol af hovedbj\u00e6lker, analyse af endebj\u00e6lketryk og skinnesp\u00e6nding, samt typevalg og sikkerhedsverifikation af motorer, bremser og andre kritiske komponenter, og fungerer som et vigtigt grundlag for strukturdesign, levetidsvurdering og sikkerhedscertificering af travers- og portalkraner i henhold til ISO-, FEM-, EN- og GB-standarder.","protected":false},"author":8,"featured_media":17038,"parent":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"single-onlinetools.php","format":"standard","meta":{"_acf_changed":false,"rank_math_lock_modified_date":false,"pgc_sgb_lightbox_settings":"","footnotes":""},"categories":[63],"tags":[],"class_list":["post-17030","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-other"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/posts\/17030"}],"collection":[{"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/comments?post=17030"}],"version-history":[{"count":6,"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/posts\/17030\/revisions"}],"predecessor-version":[{"id":17039,"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/posts\/17030\/revisions\/17039"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/media\/17038"}],"wp:attachment":[{"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/media?parent=17030"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/categories?post=17030"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dgcrane.com\/da\/wp-json\/wp\/v2\/tags?post=17030"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}