a hydraulic cylinder

Abstract

The invention relates to the field of oil cylinders, in particular to a hydraulic oil cylinder. A cylinder barrel is included. The left side of the cylinder barrel is fixedly connected with a cylinder bottom through screws. A first oil inlet and outlet port is formed in the bottom of the cylinder bottom. The outer portion of the cylinder bottom is in cup joint with a sleeve. A preheating cavity is formed in the sleeve. A through port is formed in the inner side wall of the preheating cavity, and the preheating cavity is connected with the first oil inlet and outlet port through the through port. The hydraulic oil cylinder is provided with the sleeve, the preheating cavity and an electric heat tracing belt, and the advantages that the heating function is achieved and smoothness during starting is improved are achieved. When hydraulic oil is led into the hydraulic oil cylinder, the hydraulic oil can enter the preheating cavity formed in the sleeve through a connecting oil port in advance, through heating of the electric heat tracing belt, the hydraulic oil is led into the cylinder barrel after being preheated, flowing smoothness of the hydraulic oil is guaranteed, the hydraulic oil cylinder is particularly used in the cold weather in winter in the north, and accordingly the problem that under the situation of the low temperature, the action of the hydraulic cylinder is slow is solved.

Description

technical field [0001] The invention relates to the field of oil cylinders, in particular to a hydraulic oil cylinder. Background technique [0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. It has a simple structure and reliable operation. 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. Therefore It is widely used in various mechanical hydraulic systems. The output force of the hydraulic cylinder is proportional to the effective area of ​​the piston and the pressure difference on both sides. The hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, and a buffer device. Composed of the exhaust device, the buffer device and the exhaust device depend on the specific application, and other devices are es...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art, the present invention provides a hydraulic oil cylinder, which has the advantages of heating function, smoothness when starting up, protection, reliable use, easy disassembly and replacement, and improved convenience of use, etc. It solves the phenomenon of fat gelling in the existing hydraulic oil when the ambient temperature is low, which leads to the slow movement of the hydraulic cylinder. In the environment with harsh working conditions, the phenomenon of stagnation often caused by dust and impurities attached to the piston rod is solved. Therefore, the problem that the hydraulic cylinder cannot be opened smoothly

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