Crrc Qingdao Sifang Rolling Stock Research Institute Co., Ltd.

Qingdao Sifang Rolling Stock Research Institute Co., Ltd.

Minghai Wang

Hui Ding

Lipeng Shao

Xiaolei Zhao

Xiaodong Xing

Xu Wang

Yong Wang

Jinbiao Zhang

Cancan Zhang

Xingtian Zhang

Xiaoming Cao

Zhenggang Xu

Jun Niu

Zengchao Zhang

A loading test test-and-control system and method of vehicle lifter lifting unit, the system is used to test a lifting unit, comprising a base, the base is provided thereon with a support bracket capable of installing the lifting unit to be tested; the support bracket is provided with a loading unit for applying a loading force to the lifting unit to be tested; the loading unit is electrically connected with a control unit which can control the pressure applied by the loading unit according to a set value. The method uses the system. Before the assembly of the vehicle lifter is completed, the system may carry out a loading test for the lifting unit and verify the function and static strength of the lifting unit, facilitating the test and saving cost.

Loading test test-and-control system and method of vehicle lifter lifting unit

A self-adjusting supporting head comprises a vehicle body lifting column () and a load-bearing detection device arranged on the vehicle body lifting column (). The load-bearing detection device comprises a spring supporting plate (), a spring (), a limiting switch tip (), a load limiting switch () and a floating load-bearing adjusting device. The floating load-bearing adjusting device comprises a floating load-bearing block (), a floating load-bearing block mounting base () and a floating connector. The floating load-bearing block is in spherical fit with the floating load-bearing block mounting base.

Self-adjusting supporting head

A segmented inverting cover plate apparatus for an underfloor vehicle lifting jack comprises a cover plate comprising a first movable cover plate () and a second movable cover plate (), wherein the first movable cover plate () and the second movable cover plate () are pivotly connected via a pin shaft (). An anti-inversion block () is provided directly below the pin shaft (). A guide wheel () is provided below the end of the second movable cover plate () away from the first movable cover plate (). An inverting arm () is provided below the first movable cover plate (), with one end of the inverting arm () connected to the anti-inversion block () via a bearing (), the other end of the inverting arm connected to a powered push rod () via a pin shaft () and an oil-containing bearing (), and the powered push rod () is installed on a powered push rod mounting seat ().

Segmented inverting cover plate apparatus for underfloor vehicle lifting jack

A transverse adjustment mechanism for a bilateral half-spring type load-carrying head is installed in the casing of the load-carrying head of the lifting unit of a pit type unwheeling machine, fixedly connected with the casing, directly connected to an adjustment unit at the end of the load-carrying head, and installed on a lead screw of the adjustment unit. The transverse adjustment mechanism includes an adjusting nut, an adjusting nut guide, a guiding tube, and a guiding sleeve, a nut mounting plate, a flange plate, a compression spring and a sliding shaft. The invention is currently applied to the transverse adjustment of the no-loading heads and transverse fine adjustment of the load-carrying heads of a China Railway High-speed (CRH) train. The structure is reliable and practical, safe, convenient and energy-saving to use and satisfies the demand for the synchronous lifting operation of the entire CRH train of the compatible pit type unwheeling machine.

Transverse adjustment mechanism for bilateral half-spring type load-carrying head

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Qingdao, China

Minghai Wang