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

Qingdao Sifang Rolling Stock Research Institute Co., Ltd.

Xiaodong Xing

Hui Ding

Minghai Wang

Lipeng Shao

Xingtian Zhang

Yajun Liang

Zhenggang Xu

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

Xiaodong Xing