Mechanism Kinematics Analysis of Two-leg Shield Hydraulic Support

Wang Hongwei; Dong Zhifeng

doi:10.16578/j.issn.1004.2539.2015.04.003

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Mechanism Kinematics Analysis of Two-leg Shield Hydraulic Support

更新时间：2022-10-20

- Mechanism Kinematics Analysis of Two-leg Shield Hydraulic Support
- Vol. 39, Issue 4, Pages: 125-128(2015)
- 作者机构：
  
  1. 中国矿业大学,北京
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2015.04.003
  CLC：
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[1]王洪伟,董志峰.两柱掩护式液压支架机构运动学分析[J].机械传动,2015,39(04):125-128.

Wang Hongwei, Dong Zhifeng. Mechanism Kinematics Analysis of Two-leg Shield Hydraulic Support. [J]. 39(4):125-128(2015)
[1]王洪伟,董志峰.两柱掩护式液压支架机构运动学分析[J].机械传动,2015,39(04):125-128. DOI： 10.16578/j.issn.1004.2539.2015.04.003.

Wang Hongwei, Dong Zhifeng. Mechanism Kinematics Analysis of Two-leg Shield Hydraulic Support. [J]. 39(4):125-128(2015) DOI： 10.16578/j.issn.1004.2539.2015.04.003.

摘要

两柱掩护式液压支架是由各梁体、前后连架杆和液压油缸等构件组成的多自由度多杆机构,在液压的驱动下完成支顶、护帮、移架等动作,在煤矿开采中起到重要作用。根据两柱掩护式液压支架的结构及工作特点,推导出支架高度、梁端距、立柱长度和平衡油缸长度与后连架杆位姿角及掩护梁背角之间的几何关系及计算式,基于拉格朗日方法建立了两柱掩护式液压支架运动微分方程,对ZY17300/32/70型两柱掩护式液压支架进行了求解分析,得出了支架在升降架过程中后连架杆位姿角与掩护梁背角的角位移及角速度关系、支架高度的变化规律、以及顶梁的运动速度和加速度变化特性。

Abstract

As a multi-linkage mechanism with multi-degree of freedom,the two-leg shield hydraulic support is comprised of beams,fore and rear links and hydraulic cylinders.It can realize supporting roof,protecting coal wall and moving forward under the function of hydraulic power,and plays an important role in coal mining.According to structure and operating characteristics of the two-leg shield hydraulic support,the geometrical relationship and calculations about rear link angle and shield beam angle for the supporting height,head distance,leg length and balance cylinder length are deduced.The differential equation of motion for the hydraulic support is established by the Lagrangian theory,and the support type of ZY17300/32/70 is calculated and analyzed.The relationship between angle displacement and velocity for the rear link angle and shield beam angle along with the motion characteristic of supporting height is obtained.The response characteristics of motion velocity and acceleration for top beam are discussed during the working process of lifting up and down.

关键词

液压支架机构分析运动学拉格朗日理论

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