Adjustable rail bending machine

Abstract

The invention relates to the technical field of rail transportation, and discloses an adjustable rail bending machine. The adjustable rail bending machine comprises a machine body. An ejector is movably installed at one end of the machine body. A supporting rod is fixedly installed in the middle of the machine body. A regulating box is fixedly installed at the other end of the machine body. A hydraulic ejection device is movably installed inside the regulating box. A transmission sleeve is fixedly installed on the side, on the back face of the machine body, of the regulating box. The inner ring of the transmission sleeve is movably connected with an adjusting hand wheel in a sleeving mode. An oil cavity is formed in the hydraulic ejection device. The inner ring of the top of the oil cavityis movably connected with a rotating ejection rod in a sleeving mode. The front face of the oil cavity is movably connected with a piston ejector in a sleeved mode. A threaded hole groove is formed in the rotating ejection rod, and the inside of the threaded hole groove is movably connected with a threaded rod in a sleeving mode. The middle of the inner wall of the regulating box is movably connected with a toothed belt in a sleeving mode. Due to the fact that the adjustable hydraulic ejection device is arranged to be matched with uniform compression rapid pressure relief, and thus the rail bending machine is convenient to use, high in efficiency and longer in service life.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to an adjustable rail bender. Background technique [0002] When coal mines are mined, transportation tools are used for transportation. Most transportation vehicles run on steel rails. The weighing load of steel rails is large and it is convenient for transportation vehicles to walk. However, in practice, coal mining operations are carried out underground, so steel rails are in In many cases, it needs to be bent to adapt to terrain changes. The existing rail bending operation uses a rail bender, which uses the principle of leverage to fix two points and apply pressure to bend the rail. The most common existing one is Hydraulic rail bender, but there are still some problems when it works in underground mines: [0003] 1. The angle of the hydraulic rail bender to bend the rail at one time is certain, and it cannot bend more than 150°. Therefore, in many cases, it is necessary t...

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Problems solved by technology

[0003] 1. The angle of the hydraulic rail bender to bend the rail at one time is certain, and it cannot bend more than 150°. Therefore, in many cases, it is necessary to perform multiple bends to achieve a large curved rail, which is a waste of time in practice. Moreover, the bending point of the rail is calculated and positioned in advance. When the rail bender with a fixed structure enters the curved rail, it will be bent once and needs to be moved once. In this way, the lever fulcrum when bending is changed, resulting in the bending point. It will also change, so that there is a certain error between the curved rail and the theoretical one, which is inconvenient during installation and is not conducive to the perfect operation of the transport vehicle;

[0004] 2. The hydraulic rail bender uses hydraulic pressure as the power source, but in practice, it takes a long time to push the piston rod out by using this jack-type hydraulic drive, and the inside of the hydraulic cylinder of this design will cause the piston rod to break. The internal hydraulic pressure is very large, while the hydraulic pressure in other places is much smaller than it, which will reduce the service life of the hydraulic cylinder due to the internal pressure difference when the hydraulic cylinder is used.

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