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a hydraulic rail bender for rail transit

a hydraulic rail bender for rail transit, which comprises a hydraulic oil cylinder, the rear side of the hydraulic oil cylinder is fixedly connected with a rack, the right side in the hydraulic oil cylinder is fixedly connected with a storage cylinder, an oil inlet valve is fixedly connected between the hydraulic oil cylinder and the storage cylinder in a sleeving manner, a stretching cylinder is fixedly connected into the hydraulic oil cylinder located on the left side of the storage cylinder, and a first one-way valve is fixedly connected between the storage cylinder and the stretching cylinder in a sleeving manner. A fixed magnet and a movable rod are the same in magnetism and repel each other along with pushing of a large piston, liquid in a liquid storage cavity is promoted to be extruded to increase the size of a small rubber film, the purpose of reducing the effective contact area of a sealing piece and hydraulic oil is achieved, the sealing piece is always under low working pressure when being subjected to large impact force from the hydraulic oil, abrasion of the sealing piece is prevented, the service life of the sealing piece is prolonged, and the sealing performance of the sealing piece is enhanced.

 

 

an oil jack rail bender which solves the problems that an existing rail bender is heavy in structure and poor in rail bending effect, and time and labor are wasted in the rail bending process. The oil jack rail bender comprises a plate-type base. A convex check block and a circular-arc-shaped check block which are matched with notches in a rail are fixed to the plate-type base and located on the two sides of the rail. One end of the convex check block is flush with one end of the circular-arc-shaped check block. A jack groove block fixed to the plate-type base is arranged on the flush side of the convex check block. The jack groove block and the convex check block are located on the same side of the rail. An oil jack is placed in the jack groove block, and the other end of the oil jack is closely attached to the rail. The oil jack rail bender can be used for bending the side face and the rail face of the rail; moreover, in the operating process, the labor intensity is relieved, the manufacturing cost is low, and the oil jack rail bender is convenient to operate, use and maintain and has the advantages that operation is sensitive and reliable, the accuracy is high, and the overall performance reaches the standard.

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