{"id":17375,"date":"2026-09-20T07:01:59","date_gmt":"2026-09-20T07:01:59","guid":{"rendered":"https:\/\/www.dgcrane.com\/?p=17375"},"modified":"2026-09-20T07:02:02","modified_gmt":"2026-09-20T07:02:02","slug":"crane-travelling-static-resistance-calculator","status":"publish","type":"post","link":"https:\/\/www.dgcrane.com\/sw\/crane-travelling-static-resistance-calculator\/","title":{"rendered":"Kikokotoo cha Upinzani Tuli cha Kusafiri kwa Kreni"},"content":{"rendered":"<div id=\"calculator\">\n  <div class=\"calculator-shell\">\n    <form id=\"calculator-form\" novalidate action=\"\">\n      <span class=\"calculator-sr-only\">Msingi wa hesabu: EN 13135:2026. Upeo: magurudumu ya chuma yenye fani za roller kwenye reli za chuma. ISO 8686-1:2012 haitumiki kwa mlinganyo huu. Tarehe ya uthibitisho: 2026-09-17.<\/span>\n\n      <section class=\"calculator-section\">\n        <div class=\"calculator-grid\">\n          <div class=\"calculator-field\">\n            <label for=\"calculator-loadMass\">Mzigo uliokadiriwa, G<sub>n<\/sub> (kilo)<\/label>\n            <input id=\"calculator-loadMass\" name=\"loadMass\" type=\"number\" inputmode=\"decimal\" min=\"0\" max=\"1000000000\" step=\"any\" value=\"10000\" aria-describedby=\"calculator-loadMass-error\">\n            <span id=\"calculator-loadMass-error\" class=\"error-msg\" aria-live=\"polite\"><\/span>\n          <\/div>\n\n          <div class=\"calculator-field\">\n            <label for=\"calculator-gravity\">Mvuto, g (N\/kg)<\/label>\n            <input id=\"calculator-gravity\" name=\"gravity\" type=\"number\" inputmode=\"decimal\" min=\"1\" max=\"20\" step=\"any\" value=\"10\" aria-describedby=\"calculator-gravity-error\">\n            <span id=\"calculator-gravity-error\" class=\"error-msg\" aria-live=\"polite\"><\/span>\n          <\/div>\n\n          <div class=\"calculator-field\">\n            <label for=\"calculator-gradient\">Mteremko wa kupanda, i (\u2030)<\/label>\n            <input id=\"calculator-gradient\" name=\"gradient\" type=\"number\" inputmode=\"decimal\" min=\"0\" max=\"100\" step=\"any\" value=\"1\" aria-describedby=\"calculator-gradient-error\">\n            <span id=\"calculator-gradient-error\" class=\"error-msg\" aria-live=\"polite\"><\/span>\n          <\/div>\n\n          <div class=\"calculator-field\">\n            <label for=\"calculator-wheelType\">Ujenzi wa magurudumu<\/label>\n            <select id=\"calculator-wheelType\" name=\"wheelType\">\n              <option value=\"flanged\" selected>Magurudumu yenye flange<\/option>\n              <option value=\"flangeless\">Magurudumu yasiyo na flange<\/option>\n            <\/select>\n            <span id=\"calculator-wheelType-error\" class=\"error-msg\" aria-live=\"polite\"><\/span>\n          <\/div>\n\n          <div class=\"calculator-field\">\n            <label for=\"calculator-craneMass\">Uzito wa kreni, G (kg)<\/label>\n            <input id=\"calculator-craneMass\" name=\"craneMass\" type=\"number\" inputmode=\"decimal\" min=\"0.000001\" max=\"1000000000\" step=\"any\" value=\"20000\" aria-describedby=\"calculator-craneMass-error\">\n            <span id=\"calculator-craneMass-error\" class=\"error-msg\" aria-live=\"polite\"><\/span>\n          <\/div>\n\n          <div class=\"calculator-field\">\n            <label for=\"calculator-trolleyMass\">Uzito wa troli, G<sub>1<\/sub> (kilo)<\/label>\n            <input id=\"calculator-trolleyMass\" name=\"trolleyMass\" type=\"number\" inputmode=\"decimal\" min=\"0.000001\" max=\"1000000000\" step=\"any\" value=\"2000\" aria-describedby=\"calculator-trolleyMass-error\">\n            <span id=\"calculator-trolleyMass-error\" class=\"error-msg\" aria-live=\"polite\"><\/span>\n          <\/div>\n\n          <div class=\"calculator-field\">\n            <label for=\"calculator-craneDiameter\">Gurudumu la kreni D<sub>w<\/sub> (mm)<\/label>\n            <select id=\"calculator-craneDiameter\" name=\"craneDiameter\">\n              <option value=\"50\">50<\/option>\n              <option value=\"80\">80<\/option>\n              <option value=\"100\">100<\/option>\n              <option value=\"125\">125<\/option>\n              <option value=\"160\">160<\/option>\n              <option value=\"250\">250<\/option>\n              <option value=\"320\">320<\/option>\n              <option value=\"400\" selected>400<\/option>\n              <option value=\"630\">630 na zaidi<\/option>\n            <\/select>\n            <span id=\"calculator-craneDiameter-error\" class=\"error-msg\" aria-live=\"polite\"><\/span>\n          <\/div>\n\n          <div class=\"calculator-field\">\n            <label for=\"calculator-craneFactor\">Kipengele cha kreni, F<sub>r<\/sub><\/label>\n            <select id=\"calculator-craneFactor\" name=\"craneFactor\" aria-describedby=\"calculator-craneFactor-error\"><\/select>\n            <span id=\"calculator-craneFactor-error\" class=\"error-msg\" aria-live=\"polite\"><\/span>\n          <\/div>\n\n          <div class=\"calculator-field\">\n            <label for=\"calculator-trolleyDiameter\">Gurudumu la troli D<sub>w<\/sub> (mm)<\/label>\n            <select id=\"calculator-trolleyDiameter\" name=\"trolleyDiameter\">\n              <option value=\"50\">50<\/option>\n              <option value=\"80\">80<\/option>\n              <option value=\"100\">100<\/option>\n              <option value=\"125\">125<\/option>\n              <option value=\"160\" selected>160<\/option>\n              <option value=\"250\">250<\/option>\n              <option value=\"320\">320<\/option>\n              <option value=\"400\">400<\/option>\n              <option value=\"630\">630 na zaidi<\/option>\n            <\/select>\n            <span id=\"calculator-trolleyDiameter-error\" class=\"error-msg\" aria-live=\"polite\"><\/span>\n          <\/div>\n\n          <div class=\"calculator-field\">\n            <label for=\"calculator-trolleyFactor\">Kipengele cha troli, F<sub>r<\/sub><\/label>\n            <select id=\"calculator-trolleyFactor\" name=\"trolleyFactor\" aria-describedby=\"calculator-trolleyFactor-error\"><\/select>\n            <span id=\"calculator-trolleyFactor-error\" class=\"error-msg\" aria-live=\"polite\"><\/span>\n          <\/div>\n        <\/div>\n      <\/section>\n\n      <div id=\"calculator-error-summary\" class=\"calculator-error-summary\" role=\"alert\" tabindex=\"-1\"><\/div>\n\n      <div class=\"calculator-actions\">\n        <button type=\"submit\">Hesabu<\/button>\n        <button type=\"reset\" class=\"calculator-reset\">Weka upya<\/button>\n      <\/div>\n    <input type=\"hidden\" name=\"trp-form-language\" value=\"sw\"\/><\/form>\n\n    <section class=\"calculator-results\" aria-live=\"polite\" aria-atomic=\"true\">\n      <div class=\"calculator-result-card calculator-result-main\">\n        <span>Upinzani tuli wa kusafiri kwa kreni, F<sub>st,max<\/sub><\/span>\n        <strong id=\"calculator-craneTotal\">-<\/strong>\n      <\/div>\n\n      <div class=\"calculator-result-card\">\n        <span>Upinzani tuli wa usafiri wa troli, F<sub>st,max<\/sub><\/span>\n        <strong id=\"calculator-trolleyTotal\">-<\/strong>\n      <\/div>\n    <\/section>\n  <\/div>\n\n  <style>\n    #calculator {\n      --primary-color: #0a3487;\n      --primary-hover: #F58423;\n      --error-color: #e53935;\n      --bg-color: #EAEEF7;\n      --text-color: #4a4a4a;\n      --surface-color: #ffffff;\n      --border-color: #cccccc;\n      --soft-primary: #edf2ff;\n      --soft-error: #fff3f2;\n      --focus-shadow: rgba(10, 52, 135, 0.18);\n\n      max-width: 545px;\n      margin: 0 auto;\n      padding: 30px;\n      color: var(--text-color);\n      background: var(--bg-color);\n      font-family: Arial, Helvetica, sans-serif;\n      line-height: 1.5;\n      box-sizing: border-box;\n    }\n\n    #calculator *,\n    #calculator *::before,\n    #calculator *::after {\n      box-sizing: border-box;\n    }\n\n    #calculator .calculator-shell {\n      padding: 24px;\n      border-top: 5px solid var(--primary-color);\n      background: var(--surface-color);\n    }\n\n    #calculator .calculator-sr-only {\n      position: absolute;\n      width: 1px;\n      height: 1px;\n      padding: 0;\n      margin: -1px;\n      overflow: hidden;\n      clip: rect(0, 0, 0, 0);\n      white-space: nowrap;\n      border: 0;\n    }\n\n    #calculator .calculator-section {\n      margin: 0 0 16px;\n      padding: 16px;\n      background: var(--bg-color);\n    }\n\n    #calculator .calculator-grid {\n      display: grid;\n      grid-template-columns: repeat(2, minmax(0, 1fr));\n      gap: 12px 14px;\n      align-items: start;\n    }\n\n    #calculator .calculator-field {\n      min-width: 0;\n    }\n\n    #calculator label,\n    #calculator button,\n    #calculator select {\n      font-size: 14px;\n    }\n\n    #calculator label {\n      display: flex;\n      min-height: 38px;\n      margin-bottom: 5px;\n      align-items: flex-end;\n      font-weight: 700;\n    }\n\n    #calculator input,\n    #calculator select,\n    #calculator button {\n      width: 100%;\n      border-radius: 0;\n      transition: 0.2s ease;\n    }\n\n    #calculator input,\n    #calculator select {\n      height: 36px;\n      padding: 5px 9px;\n      border: 1px solid var(--border-color);\n      color: var(--text-color);\n      background: var(--surface-color);\n      font-size: 16px;\n    }\n\n    #calculator input:focus,\n    #calculator select:focus {\n      border: 2px solid var(--primary-color);\n      outline: 0;\n      box-shadow: 0 0 0 3px var(--focus-shadow);\n    }\n\n    #calculator input.error,\n    #calculator select.error,\n    #calculator input.error:focus,\n    #calculator select.error:focus {\n      border: 2px solid var(--error-color);\n      box-shadow: none;\n    }\n\n    #calculator .error-msg {\n      display: none;\n      margin-top: 5px;\n      color: var(--error-color);\n      font-size: 12px;\n      font-weight: 700;\n    }\n\n    #calculator .error-msg.visible {\n      display: block;\n    }\n\n    #calculator .calculator-error-summary {\n      display: none;\n      margin-bottom: 14px;\n      padding: 10px;\n      border-left: 4px solid var(--error-color);\n      color: var(--error-color);\n      background: var(--soft-error);\n      font-weight: 700;\n    }\n\n    #calculator .calculator-error-summary.visible {\n      display: block;\n    }\n\n    #calculator .calculator-actions {\n      display: flex;\n      gap: 12px;\n      margin-top: 4px;\n    }\n\n    #calculator button {\n      height: 34px;\n      padding: 0 16px;\n      border: 0;\n      color: var(--surface-color);\n      background: var(--primary-color);\n      font-weight: 700;\n      line-height: 34px;\n      cursor: pointer;\n    }\n\n    #calculator button:hover,\n    #calculator button:focus-visible {\n      background: var(--primary-hover);\n      outline: 2px solid var(--primary-color);\n      outline-offset: 2px;\n    }\n\n    #calculator button.calculator-reset {\n      color: var(--primary-color);\n      background: var(--surface-color);\n      border: 1px solid var(--primary-color);\n    }\n\n    #calculator button.calculator-reset:hover,\n    #calculator button.calculator-reset:focus-visible {\n      color: var(--surface-color);\n      background: var(--primary-hover);\n    }\n\n    #calculator .calculator-results {\n      display: grid;\n      grid-template-columns: 1fr 1fr;\n      gap: 12px;\n      margin-top: 18px;\n    }\n\n    #calculator .calculator-result-card {\n      margin: 0;\n      padding: 14px;\n      border-left: 4px solid var(--primary-color);\n      background: var(--soft-primary);\n    }\n\n    #calculator .calculator-result-card > span {\n      display: block;\n      font-size: 13px;\n      font-weight: 700;\n    }\n\n    #calculator .calculator-result-card strong {\n      display: block;\n      margin: 4px 0 10px;\n      color: var(--primary-color);\n      font-size: 32px;\n      line-height: 1.15;\n      overflow-wrap: anywhere;\n    }\n\n    @media (max-width: 768px) {\n      #calculator {\n        padding: 0.3rem;\n      }\n\n      #calculator .calculator-shell {\n        padding: 0.3rem;\n      }\n\n      #calculator label,\n      #calculator input,\n      #calculator select,\n      #calculator button {\n        font-size: 0.28rem;\n      }\n\n      #calculator input,\n      #calculator select,\n      #calculator button {\n        min-height: 0.7rem;\n        height: 0.7rem;\n      }\n\n      #calculator button {\n        line-height: 0.7rem;\n      }\n\n      #calculator .calculator-actions {\n        flex-direction: column;\n      }\n\n      #calculator .calculator-actions button {\n        width: 100%;\n      }\n\n      #calculator .calculator-grid {\n        grid-template-columns: repeat(2, minmax(0, 1fr));\n        gap: 0.24rem;\n      }\n\n      #calculator label {\n        min-height: 0.7rem;\n      }\n\n      #calculator .calculator-results {\n        grid-template-columns: 1fr;\n      }\n    }\n\n    @media (prefers-reduced-motion: reduce) {\n      #calculator *,\n      #calculator *::before,\n      #calculator *::after {\n        transition: none;\n      }\n    }\n  <\/style>\n\n  <script>\n    (() => {\n      \"use strict\";\n\n      const root = document.getElementById(\"calculator\");\n      if (!root) return;\n\n      const form = root.querySelector(\"#calculator-form\");\n      const summary = root.querySelector(\"#calculator-error-summary\");\n\n      const diameterPoints = [\n        50, 80, 100, 125, 160, 250, 320, 400, 630\n      ];\n\n      const factorSets = {\n        flanged: [\n          0.013, 0.011, 0.010, 0.009, 0.008,\n          0.0065, 0.006, 0.0055, 0.005\n        ],\n        flangeless: [\n          0.011, 0.0095, 0.0085, 0.0075, 0.007,\n          0.0055, 0.0052, 0.005, 0.0045\n        ]\n      };\n\n      const fields = {\n        loadMass: root.querySelector(\"#calculator-loadMass\"),\n        gravity: root.querySelector(\"#calculator-gravity\"),\n        gradient: root.querySelector(\"#calculator-gradient\"),\n        wheelType: root.querySelector(\"#calculator-wheelType\"),\n        craneMass: root.querySelector(\"#calculator-craneMass\"),\n        craneDiameter: root.querySelector(\"#calculator-craneDiameter\"),\n        craneFactor: root.querySelector(\"#calculator-craneFactor\"),\n        trolleyMass: root.querySelector(\"#calculator-trolleyMass\"),\n        trolleyDiameter: root.querySelector(\"#calculator-trolleyDiameter\"),\n        trolleyFactor: root.querySelector(\"#calculator-trolleyFactor\")\n      };\n\n      const outputs = {\n        craneTotal: root.querySelector(\"#calculator-craneTotal\"),\n        trolleyTotal: root.querySelector(\"#calculator-trolleyTotal\")\n      };\n\n      function setError(fieldName, message) {\n        const input = fields[fieldName];\n        const error = root.querySelector(\n          `#calculator-${fieldName}-error`\n        );\n\n        input.classList.add(\"error\");\n        input.setAttribute(\"aria-invalid\", \"true\");\n\n        if (error) {\n          error.textContent = message;\n          error.classList.add(\"visible\");\n        }\n      }\n\n      function clearError(fieldName) {\n        const input = fields[fieldName];\n        const error = root.querySelector(\n          `#calculator-${fieldName}-error`\n        );\n\n        input.classList.remove(\"error\");\n        input.removeAttribute(\"aria-invalid\");\n\n        if (error) {\n          error.textContent = \"\";\n          error.classList.remove(\"visible\");\n        }\n      }\n\n      function validateInput(\n        fieldName,\n        label,\n        minimum,\n        maximum,\n        allowZero\n      ) {\n        const input = fields[fieldName];\n        const value = Number.parseFloat(input.value);\n\n        clearError(fieldName);\n\n        if (\n          input.value.trim() === \"\" ||\n          !Number.isFinite(value)\n        ) {\n          setError(\n            fieldName,\n            `${label} is required and must be a finite number.`\n          );\n          return null;\n        }\n\n        if (\n          (!allowZero && value <= minimum) ||\n          (allowZero &#038;&#038; value < minimum) ||\n          value > maximum\n        ) {\n          const relation = allowZero\n            ? `from ${minimum}`\n            : `greater than ${minimum}`;\n\n          setError(\n            fieldName,\n            `${label} must be ${relation} and no more than ${maximum}.`\n          );\n          return null;\n        }\n\n        return value;\n      }\n\n      function rollingFactor(wheelType, diameter) {\n        const factors = factorSets[wheelType];\n\n        if (!factors) {\n          throw new Error(\"Unsupported wheel construction.\");\n        }\n\n        const index = diameterPoints.indexOf(Number(diameter));\n\n        if (index === -1) {\n          throw new Error(\n            \"Unsupported wheel diameter selection.\"\n          );\n        }\n\n        return factors[index];\n      }\n\n      function calculateTravelResistance(\n        loadMass,\n        selfMass,\n        gravity,\n        gradientPerMille,\n        factor\n      ) {\n        const normalForce =\n          (loadMass + selfMass) * gravity;\n\n        const rolling =\n          normalForce * factor;\n\n        const grade =\n          normalForce * gradientPerMille \/ 1000;\n\n        return {\n          total: rolling + grade\n        };\n      }\n\n      function clearResults() {\n        outputs.craneTotal.textContent = \"\u2014\";\n        outputs.trolleyTotal.textContent = \"\u2014\";\n      }\n\n      function formatForce(value) {\n        return `${value.toLocaleString(\"en-US\", {\n          minimumFractionDigits: 2,\n          maximumFractionDigits: 2\n        })} N`;\n      }\n\n      function formatFactor(value) {\n        return value\n          .toFixed(6)\n          .replace(\/0+$\/, \"\")\n          .replace(\/\\.$\/, \"\");\n      }\n\n      function populateFactorOptions(prefix) {\n        const wheelType = fields.wheelType.value;\n        const diameter =\n          Number(fields[`${prefix}Diameter`].value);\n\n        const factorSelect =\n          fields[`${prefix}Factor`];\n\n        const factors = factorSets[wheelType];\n\n        const options = factors.map((factor) => {\n          const option =\n            document.createElement(\"option\");\n\n          option.value = String(factor);\n          option.textContent =\n            formatFactor(factor);\n\n          return option;\n        });\n\n        factorSelect.replaceChildren(...options);\n\n        factorSelect.value = String(\n          rollingFactor(wheelType, diameter)\n        );\n      }\n\n      function syncWheelSelectors(\n        prefix,\n        changedField\n      ) {\n        const wheelType =\n          fields.wheelType.value;\n\n        const diameterSelect =\n          fields[`${prefix}Diameter`];\n\n        const factorSelect =\n          fields[`${prefix}Factor`];\n\n        if (changedField === \"type\") {\n          populateFactorOptions(prefix);\n          return;\n        }\n\n        if (changedField === \"factor\") {\n          const factor =\n            Number(factorSelect.value);\n\n          const index =\n            factorSets[wheelType].findIndex(\n              (candidate) => candidate === factor\n            );\n\n          if (index !== -1) {\n            diameterSelect.value =\n              String(diameterPoints[index]);\n          }\n\n          return;\n        }\n\n        factorSelect.value = String(\n          rollingFactor(\n            wheelType,\n            Number(diameterSelect.value)\n          )\n        );\n      }\n\n      function readAndValidate() {\n        const values = {\n          loadMass: validateInput(\n            \"loadMass\",\n            \"Rated load\",\n            0,\n            1000000000,\n            true\n          ),\n\n          gravity: validateInput(\n            \"gravity\",\n            \"Gravity\",\n            1,\n            20,\n            false\n          ),\n\n          gradient: validateInput(\n            \"gradient\",\n            \"Uphill gradient\",\n            0,\n            100,\n            true\n          ),\n\n          craneMass: validateInput(\n            \"craneMass\",\n            \"Crane self mass\",\n            0,\n            1000000000,\n            false\n          ),\n\n          craneDiameter:\n            Number(fields.craneDiameter.value),\n\n          craneFactor:\n            Number(fields.craneFactor.value),\n\n          trolleyMass: validateInput(\n            \"trolleyMass\",\n            \"Trolley self mass\",\n            0,\n            1000000000,\n            false\n          ),\n\n          trolleyDiameter:\n            Number(fields.trolleyDiameter.value),\n\n          trolleyFactor:\n            Number(fields.trolleyFactor.value),\n\n          wheelType:\n            fields.wheelType.value\n        };\n\n        const linkedSelectionsValid =\n          values.craneFactor === rollingFactor(\n            values.wheelType,\n            values.craneDiameter\n          ) &&\n          values.trolleyFactor === rollingFactor(\n            values.wheelType,\n            values.trolleyDiameter\n          );\n\n        const invalid =\n          Object.entries(values).filter(\n            ([name, value]) =>\n              name !== \"wheelType\" &&\n              (\n                value === null ||\n                !Number.isFinite(value)\n              )\n          );\n\n        if (!linkedSelectionsValid) {\n          setError(\n            \"craneFactor\",\n            \"Wheel construction, diameter and factor must match.\"\n          );\n\n          setError(\n            \"trolleyFactor\",\n            \"Wheel construction, diameter and factor must match.\"\n          );\n\n          return null;\n        }\n\n        return invalid.length ? null : values;\n      }\n\n      function showResults(crane, trolley) {\n        outputs.craneTotal.textContent =\n          formatForce(crane.total);\n\n        outputs.trolleyTotal.textContent =\n          formatForce(trolley.total);\n      }\n\n      populateFactorOptions(\"crane\");\n      populateFactorOptions(\"trolley\");\n\n      fields.wheelType.addEventListener(\n        \"change\",\n        () => {\n          syncWheelSelectors(\"crane\", \"type\");\n          syncWheelSelectors(\"trolley\", \"type\");\n        }\n      );\n\n      fields.craneDiameter.addEventListener(\n        \"change\",\n        () => syncWheelSelectors(\n          \"crane\",\n          \"diameter\"\n        )\n      );\n\n      fields.craneFactor.addEventListener(\n        \"change\",\n        () => syncWheelSelectors(\n          \"crane\",\n          \"factor\"\n        )\n      );\n\n      fields.trolleyDiameter.addEventListener(\n        \"change\",\n        () => syncWheelSelectors(\n          \"trolley\",\n          \"diameter\"\n        )\n      );\n\n      fields.trolleyFactor.addEventListener(\n        \"change\",\n        () => syncWheelSelectors(\n          \"trolley\",\n          \"factor\"\n        )\n      );\n\n      Object.keys(fields).forEach(\n        (fieldName) => {\n          fields[fieldName].addEventListener(\n            \"input\",\n            () => clearError(fieldName)\n          );\n\n          fields[fieldName].addEventListener(\n            \"change\",\n            () => clearError(fieldName)\n          );\n        }\n      );\n\n      form.addEventListener(\n        \"submit\",\n        (event) => {\n          event.preventDefault();\n\n          summary.textContent = \"\";\n          summary.classList.remove(\"visible\");\n\n          const values = readAndValidate();\n\n          if (!values) {\n            clearResults();\n\n            summary.textContent =\n              \"Please correct the highlighted fields.\";\n\n            summary.classList.add(\"visible\");\n            summary.focus();\n            return;\n          }\n\n          const crane =\n            calculateTravelResistance(\n              values.loadMass,\n              values.craneMass,\n              values.gravity,\n              values.gradient,\n              values.craneFactor\n            );\n\n          const trolley =\n            calculateTravelResistance(\n              values.loadMass,\n              values.trolleyMass,\n              values.gravity,\n              values.gradient,\n              values.trolleyFactor\n            );\n\n          showResults(crane, trolley);\n        }\n      );\n\n      form.addEventListener(\n        \"reset\",\n        () => {\n          window.setTimeout(() => {\n            Object.keys(fields).forEach(\n              clearError\n            );\n\n            summary.textContent = \"\";\n            summary.classList.remove(\"visible\");\n\n            populateFactorOptions(\"crane\");\n            populateFactorOptions(\"trolley\");\n            clearResults();\n          }, 0);\n        }\n      );\n    })();\n  <\/script>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Fomula ya Kikokotoo cha Upinzani Tuli cha Kusafiri kwa Kreni<\/h2>\n\n\n\n<div id=\"travel-resistance-formulas\">\n  <div class=\"formula\">\n    F<sub>f<\/sub>\n    = (G<sub>n<\/sub> + G) \u00d7 g \u00d7 f<sub>r<\/sub>\n  <\/div>\n\n  <div class=\"formula\">\n    F<sub>s<\/sub>\n    = (G<sub>n<\/sub> + G) \u00d7 g \u00d7 i\n    <span class=\"formula-condition\">\n    <\/span>\n  <\/div>\n\n  <div class=\"formula formula-total\">\n    F<sub>st,max<\/sub>\n    = F<sub>f<\/sub>\n    + F<sub>s<\/sub>\n  <\/div>\n\n  <style>\n    #travel-resistance-formulas {\n      --text-color: #4a4a4a;\n\n      width: 100%;\n      margin: 0;\n      padding: 0;\n      color: var(--text-color);\n      box-sizing: border-box;\n    }\n\n    #travel-resistance-formulas *,\n    #travel-resistance-formulas *::before,\n    #travel-resistance-formulas *::after {\n      box-sizing: border-box;\n    }\n\n    #travel-resistance-formulas .formula {\n      padding: 7px 0;\n      color: var(--text-color);\n      font-family: \"Segoe UI\", Arial, Helvetica, sans-serif;\n      font-size: 20px;\n      font-style: normal;\n      font-weight: 400;\n      line-height: 1.55;\n      text-align: left;\n      white-space: nowrap;\n    }\n\n    #travel-resistance-formulas .formula sub {\n      font-size: 65%;\n      font-style: normal;\n      vertical-align: -0.3em;\n    }\n\n    #travel-resistance-formulas .formula-condition {\n      margin-left: 8px;\n      font-size: 16px;\n      font-style: normal;\n      font-weight: 400;\n    }\n\n    #travel-resistance-formulas .formula-total {\n      color: var(--text-color);\n      font-size: 20px;\n      font-style: normal;\n      font-weight: 600;\n    }\n\n    @media (max-width: 520px) {\n      #travel-resistance-formulas {\n        overflow-x: auto;\n      }\n\n      #travel-resistance-formulas .formula {\n        font-size: 18px;\n      }\n\n      #travel-resistance-formulas .formula-condition {\n        font-size: 14px;\n      }\n\n      #travel-resistance-formulas .formula-total {\n        font-size: 18px;\n      }\n    }\n  <\/style>\n<\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>G<sub>n<\/sub>: Mzigo uliokadiriwa wa kreni, kitengo: kg<\/li>\n\n\n\n<li>G: Uzito wa kreni, kitengo: kg<\/li>\n\n\n\n<li>G<sub>1<\/sub>: Uzito wa troli, kitengo: kg<\/li>\n\n\n\n<li>g: Mvuto (thamani inachukuliwa kama 10 N\/kg)<\/li>\n\n\n\n<li>f<sub>r<\/sub>: Kipengele cha msuguano unaozunguka<\/li>\n\n\n\n<li>i: Mteremko unaodhaniwa<\/li>\n\n\n\n<li>F<sub>f<\/sub>Upinzani wa msuguano, kitengo: N<\/li>\n\n\n\n<li>F: Upinzani wa gradient, kitengo: N<\/li>\n\n\n\n<li>F<sub>st, upeo<\/sub>: Upinzani tuli wa kusafiri kwa kreni, kitengo: N<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Vidokezo<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hii f<sub>r<\/sub> mgawo kwa kweli unawakilisha upinzani wa kuviringisha gurudumu pamoja na msuguano wa kubeba gurudumu, pamoja na athari za ziada zinazohusiana na flange ya gurudumu.<\/li>\n\n\n\n<li>Kwa kawaida, kipenyo cha magurudumu cha utaratibu wa usafiri wa kreni ni kikubwa kuliko kile cha utaratibu wa usafiri wa troli. Kwa hivyo, kikokotoo hiki huruhusu hesabu tofauti kulingana na vigezo husika.<\/li>\n\n\n\n<li>Kwa mifumo ya kusafiri na mota za umeme, mahitaji ya nguvu ni nyeti kiasi. Hata mteremko wa 1\u2030 pekee hutoa upinzani halisi wa uendeshaji. Kwa hivyo, kwa kukosekana kwa data iliyopimwa kutoka kwa kituo, mteremko unaodhaniwa huingizwa ili kuzuia mota isiyo na ukubwa.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Kreni Zinazotumika<\/h2>\n\n\n\n<p>Bidhaa zilizoorodheshwa hapa chini zinafaa zaidi kutumika katika mazingira ya ndani ya kiwanda yaliyofungwa.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kreni ya Juu ya Mhimili Mmoja<\/li>\n\n\n\n<li>Kreni ya Juu ya Mihimili Miwili<\/li>\n\n\n\n<li>Kreni ya Gantry yenye mhimili mmoja (Kwa matumizi ya ndani)<\/li>\n\n\n\n<li>Kreni ya Gantry yenye girder mbili (Kwa matumizi ya ndani)<\/li>\n\n\n\n<li>Troli ya Kreni ya Juu<\/li>\n\n\n\n<li>Troli ya Gantry Crane<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"Kikokotoo cha upinzani tuli kinachosafiri kwa kreni hukadiria nguvu inayohitajika kushinda msuguano na mteremko wa njia kwa ajili ya usafiri wa kawaida. Kwa kutumia mzigo uliokadiriwa na uzito usio na uzito wa kreni, huangalia kama mota na viendeshi vinaweza kusogeza kreni. Matokeo husaidia uteuzi wa mota zinazolingana, sanduku za gia na magurudumu. Kikokotoo cha upinzani tuli kinachosafiri kwa kreni pia husaidia kutathmini hatari ya kuteleza kwa gurudumu. Kwa nyimbo zilizoinama, hesabu hutathmini uwezekano wa kuteleza kwa kreni baada ya kusimama, kuzuia uharibifu wa fani, kuuma kwa reli na masuala yanayohusiana na usakinishaji.","protected":false},"author":8,"featured_media":17373,"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":[1059],"tags":[],"class_list":["post-17375","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-online-tools"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/posts\/17375"}],"collection":[{"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/comments?post=17375"}],"version-history":[{"count":5,"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/posts\/17375\/revisions"}],"predecessor-version":[{"id":17380,"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/posts\/17375\/revisions\/17380"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/media\/17373"}],"wp:attachment":[{"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/media?parent=17375"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/categories?post=17375"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/tags?post=17375"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}