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    XCMG accessories crane pulley 110103817

    Short Description:

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    Product Detail

    Product Tags

    1. Description

    Contact  +8619852008965 WeChat WhatsApp same number

    Applicable models XCMG: QY25K5C_2 QY70KC QY50KC QY25K5D_2 QY25KC XCT35_BR QY25K5D_3 QY25K5D_3 QY25K5C_1 QY55KC_1 QY25K5F_1 QY50KC QY50K5C_1 QY25K5C_2 QY25K5F QY25K5C QY25K5D_2 QY30KC QY55K5C_2 QY25K5F_1 QY25K5D_1 QY30KC QY55K5D
    XCT80L6 XCT130_1 XCT12 XCT80L6 XCT25L4_S XCA40_M XCA30_JY XCT25L5_3 XCT55L5 XCT110_1 XCT60L6 XCT12 XCT25L5_SR XCT25L5_2 XCT95L7 XCT75L7 QY110K8C QY95K7C QY110K7C XCT100 XCT75_S QY40KC XCT90 XCT25 XCT25L5_E QY70KC QY40K5C_2 XCT60L6_1 QY75KC QY100K7C QY95KH QY100K6C QY50JW XCT16_1 XCT100_BR XCT60 QY20K5D QY85KC XCT25 XCT80L5 XCT100 XCT20L5_1 XCT75L6 XCT20L5 XCT80_S XPD36 QY16KC QY16KC QY40K5D_1 QY25K5L XCA40 QY40KD QY80K5D QY70K5D_1 QY50KD QY20K5C XCT50_Y XCT16_Y XCT25L4_Y XCT80_Y XCT60_Y XCT50_Y and other XCT QY RT series models

    2. Product introduction
    Pulley is a deformable lever, which is a simple machine of the lever class and has a wide range of uses. In our country as early as the Warring States period, there is a record about pulley in the book "Mo Jing". A fixed pulley with a fixed central axis is a deformed equal-arm lever, which is effortless and effortless but can change the direction of the force. The pulley in which the center axis moves with the weight is called the moving pulley, which is a deformed unequal arm lever (labor-saving lever), which can save half the force, but cost twice the distance (the moving pulley rises n meters, and the free end of the string rises 2n meters , n≥0), and cannot change the direction of the force. No matter where the force direction of the pulley string is, the force used to lift the heavy object is equal (the power arm and the resistance arm are both equal and equal to the radius of the pulley); the most labor-saving is when the force direction of the dynamic pulley string is vertical upward. .
    In practice, a certain number of dynamic pulleys and fixed pulleys are often combined into various forms of pulley groups. The pulley group both saves effort and changes the direction of the force. The differential pulley (commonly known as chain hoist) commonly used in factories is also a pulley group. Pulley groups are widely used in cranes, hoists, elevators and other machinery. Pulley has appeared in the form of knowledge points in the sixth grade of science edition of the People's Education Edition, and the eighth grade of Shanghai Jiaotong University (all in one volume), requiring to distinguish between labor-saving, direction-changing, and drawing pulley groups.

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