Design of automatic in and out device of hydraulic support test bench
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摘要: 针对液压支架检验时进出试验台效率低且易发生伤人事故的问题,设计了一种液压支架试验台自动进出架装置。采用电动机驱动进出架小车,通过专用轨道将被试支架运输至试验台指定位置;为了使进出架小车将液压支架运送到指定位置后能自由退回,设计了一种水平放置的举升油缸:举升油缸安装在试验台底座内部,通过其推动楔形水平移动块,带动楔形垂直移动块在底座内部沿轨道上下垂直运动;在楔形垂直移动块上按照进出架小车U型内部空间尺寸布置16根顶杆,垂直穿过试验台底座预留的小孔,进入试验台上的被试液压支架,使其与进出架小车脱离,进出架小车退出复位,再放下被试支架,进入试验状态。分析计算结果表明,该装置额定载荷超过120 t,满足液压支架自动进出试验台的需求。实际应用表明,该装置避免了进出架小车不必要的受力加载,实现了进出架全过程的自动化,缩短了液压支架进出试验台的时间,消除了安全隐患。Abstract: In view of problems of low efficiency of entering and exiting test bench during hydraulic support inspection and prone to injury accidents, an automatic in and out device of hydraulic support test bench was designed. An in and out trolley is driven by an electric motor to transport the tested support to the designated position of the test bench on a dedicated track; In order to make the tested support transported to the specified position by the trolley, a horizontal lifting cylinder is designed.The lifting cylinder is installed in the base of the test bench to push the wedge-shaped horizontal moving block, the wedge-shaped vertical moving block is driven to move vertically up and down along the track in the base.On the wedge vertical moving block, 16 ejecting rods are arranged according to the size of the U-shaped internal space of the trolley, which pass vertically through holes reserved in the base of the test bench and enter into the tested support on the test bench to make it separate from the trolley. As a result, the trolley exits and resets, and then the tested support is put down to enter test state. Analysis and calculation results show that the rated load of the device exceeds 120 t, which meets requirements of the hydraulic support for automatic in and out the test bench. Practical application shows that the device avoids unnecessary loading of the in and out trolley, realizes the automation of the whole in and out process of hydraulic support, greatly shortens the time for the hydraulic support to enter and exit the test bench, and completely eliminates safety hazards.
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