Hydraulic cylinder for lifting platform in caustic soda production process

Abstract

The invention belongs to the field of hydraulic cylinders and particularly discloses a hydraulic cylinder used for a lifting platform in production of caustic soda, comprising a cylinder barrel and a movable cylinder cover detachably connected with the cylinder barrel, wherein two ends of the cylinder barrel are respectively provided with a hydraulic pipe; and one end part of the cylinder barrel is provided with a fixed cylinder cover integrally formed with the cylinder barrel; and a pressure relief groove is formed in the cylinder barrel and is located at a position, close to the fixed cylinder cover, on the cylinder barrel; the length direction of the pressure relief groove is the same as the axial direction of the cylinder barrel; and the length of the pressure relief groove is greater than the thickness of a piston. The hydraulic cylinder disclosed by the invention overcomes the defects of conventional hydraulic cylinders employing rubber gaskets for piston buffering that the rubber gaskets are prone to ageing and weak in impact resistance and need frequent change.

Description

technical field [0001] The invention relates to the field of hydraulic cylinders, in particular to a hydraulic cylinder used for raising and lowering platforms in the production process of caustic soda. Background technique [0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swing motion). When it is used to realize reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap, and the motion is stable, so it is widely used in various mechanical hydraulic systems. The hydraulic cylinder is basically composed of cylinder barrel and cylinder head, piston and piston rod, sealing device, buffer device and exhaust device. Buffers and exhausts are application specific and others are essential. Hydraulic cylinders are widely used in engineering equipment, such as lifting platforms. [0003] In the caustic soda production process, it is usually ...

AI Technical Summary

Problems solved by technology

Since the stroke of the piston in each cylinder is limited, when the stroke of the piston reaches the end, the piston will continue to move forward due to inertia, and the piston will impact the cylinder head of the hydraulic cylinder, resulting in abnormal noise, noise, vibration, etc. It may even cause mechanical damage to the cylinder head or piston

[0004] At present, the hydraulic cylinder overcomes the impact of the piston on the cylinder head by installing a buffer pad on the cylinder head of the hydraulic cylinder. However, the installed buffer pad is usually a rubber pad. Due to the shortcomings of the rubber pad, such as easy aging and weak impact resistance, the piston hits the hydraulic cylinder. The problem of the cover has not been well resolved. The rubber pad needs to be replaced every once in a while, which affects the work efficiency. In addition, it is very troublesome to disassemble the double-acting hydraulic cylinder.

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