beltconveyor_w350_l250
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Determining the diameter of the conveyor belt drum is a comprehensive consideration process involving multiple factors. Here are some main methods and principles for determining the diameter of conveyor belt rollers:
1、 Main methods
Select based on torque transmission capability:
The diameter selection of the transmission drum needs to ensure that it can transmit sufficient torque to drive the conveyor belt and the materials on top.
The torque transmission capability is related to factors such as drum diameter, material, friction coefficient, etc.
According to the allowable surface pressure selection of the drum:
The allowable surface pressure of a drum refers to the maximum pressure that the surface of the drum can withstand.
When selecting the diameter of the drum, it is necessary to ensure that the allowable surface pressure of the drum can meet the weight of the conveyor belt and materials, as well as the dynamic pressure during operation.
Select according to the conveyor belt model:
The model of conveyor belt usually includes parameters such as thickness and strength.
These parameters will affect the selection of drum diameter, as different types of conveyor belts require drums of different diameters to support and drive.
Most conveyor belt manufacturers will provide the recommended diameter of the drive drum in the conveyor belt profile.
Match based on force and enclosure angle:
After determining the diameter of the transmission drum, the diameter of the reversing drum in the conveyor equipment can be matched based on the force and enclosure angle of the drum.
Matching and selecting the diameter of each drum through tension utilization rate and wrapping angle to ensure the stable operation of the conveyor belt.
2、 Precautions
Drum diameter series:
At present, the diameter series of rollers includes various specifications, such as 200mm, 250mm, 315mm, etc., up to 1800mm, 2000mm, etc. for large equipment.
When selecting, priority should be given to these standard specifications for procurement, installation, and maintenance.
Roller material and surface treatment:
The material and surface treatment of the drum also affect the selection of its diameter.
For example, rollers made of materials such as galvanized carbon steel, chrome plated steel carbon, and coated carbon steel have different wear resistance, corrosion resistance, and friction coefficient.
Choosing the appropriate roller material and surface treatment based on the characteristics of the conveyor belt and material can improve conveying efficiency and service life.
Requirements for the number of core layers in conveyor belts:
The number of core layers has strict requirements for the diameter of conveyor pulleys. If the diameter of the pulley is too small, the deflection of the conveyor belt during pulley turning will increase, resulting in increased fatigue wear of the covering rubber. The fatigue degree of the skeleton material, core rubber material, and covering rubber will also increase, and the service life of the conveyor belt will be shortened.
Usually, cotton sail tape requires a pulley diameter of D ≥ 80s (s is the core thickness), nylon tape requires D ≥ 90s, EP tape requires D ≥ 108s, and steel wire rope core tape requires D ≥ 145s (unit: mm）。
Applicability of calculation methods:
For certain specific situations, the drum diameter can be calculated using a formula method, such as D=((60 × K × V)/(π × n)).
However, it should be noted that this method requires accurate knowledge of parameters such as rolling coefficient K, working line velocity V, and rotational speed n, and these parameters may vary depending on the actual situation.
Therefore, when using the formula method for calculation, the accuracy and applicability of the parameters should be ensured.
In summary, determining the diameter of the conveyor belt drum requires comprehensive consideration of multiple factors and methods. In practical applications, selection and adjustment should be made according to specific circumstances to ensure the stable operation and efficient transmission of the conveyor belt.
确定输送带的滚筒直径是一个涉及多个因素的综合考量过程。以下是一些确定输送带滚筒直径的主要方法和原则：
一、主要方法
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根据转矩传递能力选择：
- 传动滚筒的直径选择需要确保其能够传递足够的转矩，以驱动输送带和上面的物料。
- 转矩传递能力与滚筒直径、材质、摩擦系数等因素有关。
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根据滚筒许用面压选择：
- 滚筒的许用面压是指滚筒表面能够承受的最大压力。
- 选择滚筒直径时，需要确保滚筒的许用面压能够满足输送带和物料的重量以及运行过程中的动态压力。
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根据输送带型号选择：
- 输送带的型号通常包括其厚度、强度等参数。
- 这些参数会影响滚筒直径的选择，因为不同型号的输送带需要不同直径的滚筒来支撑和驱动。
- 大部分输送带厂家都会在输送带的型谱中给出传动滚筒的推荐直径。
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根据受力和围包角匹配：
- 在确定了传动滚筒直径后，输送机设备中的改向滚筒直径可以根据滚筒的受力和围包角进行匹配。
- 通过张力利用率和围包角进行各个滚筒直径的匹配选择，以确保输送带的稳定运行。
二、注意事项
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滚筒直径系列：
- 目前滚筒的直径系列包括多种规格，如200mm、250mm、315mm等，直至大型设备的1800mm、2000mm等。
- 在选择时，应优先考虑这些标准规格，以便于采购、安装和维护。
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滚筒材质和表面处理：
- 滚筒的材质和表面处理也会影响其直径的选择。
- 例如，碳钢镀锌、钢碳镀铬、碳钢包胶等材质的滚筒具有不同的耐磨性、耐腐蚀性和摩擦系数。
- 根据输送带和物料的特点，选择合适的滚筒材质和表面处理可以提高输送效率和使用寿命。
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输送带带芯层数的要求：
- 带芯层数对输送机带轮直径有较严的要求。如果带轮直径过小，输送带经过带轮转向时的屈挠会增大，导致覆盖胶疲劳磨损增加，骨架材料、芯层胶料、覆盖胶的疲劳程度也增大，输送带使用寿命缩短。
- 通常，棉帆布带要求带轮直径D≥80s（s为带芯厚度），尼龙带要求D≥90s，EP带要求D≥108s，钢丝绳芯带要求D≥145s（单位：mm）。
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计算方法的适用性：
- 对于某些特定情况，可以通过公式法计算滚筒直径，如D=((60×K×V)/(π×n))。
- 但需要注意的是，这种方法需要准确知道滚动系数K、工作线速度V和转速n等参数，并且这些参数可能因实际情况的不同而有所变化。
- 因此，在使用公式法计算时，应确保参数的准确性和适用性。
综上所述，确定输送带的滚筒直径需要综合考虑多个因素和方法。在实际应用中，应根据具体情况进行选择和调整，以确保输送带的稳定运行和高效传输。
