Speed changing/regulating hydraulic cylinder device

Abstract

The invention relates to a hydraulic cylinder device, in particular to a speed changing / regulating hydraulic cylinder device. The speed changing / regulating hydraulic cylinder device comprises main components including a rod end lug ring, a large piston rod, a gland, a guide sleeve, a piston, a cylinder body, a small piston rod, a cylinder deck and a tailstock. The rod end lug ring is arranged at the front end of the cylinder body. One end of the rod end lug ring is connected with a main engine, and the other end of the rod end lug ring is connected with one end of the large piston rod through threads. The other end of the large piston rod is embedded into the cylinder body and connected with the cylinder body into a whole in a threaded mode through the gland. The external diameter of the large piston rod is matched with the internal diameter of the guide sleeve, and the external diameter of the guide sleeve is matched with the internal diameter of the cylinder body. The three piston systems of different sizes realize different mechanism systems controlling fast running, slow running and inching running, the intelligent control state of adjusting the speed of the piston rods rapidly and coarsely or finely is achieved through computer operations, the operation speed is effectively controlled through the speed changing / regulating hydraulic cylinder, and a user can perform operation at different speeds.

Description

technical field [0001] The invention relates to a hydraulic oil cylinder device, in particular to a variable / adjustable speed hydraulic oil cylinder device. Background technique [0002] At present, there are many domestic manufacturers of hydraulic cylinder products, but they cannot meet the needs of large-scale pipeline valve water supply maintenance. The diameter of large-scale water supply pipelines is more than 5 meters. In the process of closing maintenance and opening, in order to protect the sealing device, it must be guaranteed. During the opening process, the fast-slow-slow opening and closing speed is realized, so as to ensure that all sealing devices in the pipeline are not damaged. The product structure of variable / speed-regulating hydraulic cylinders of ordinary hydraulic cylinder products adopts the simple form of a single structure of traditional pumps and valves. These traditional and ordinary hydraulic cylinders can only rely on pumps or valves to control...

AI Technical Summary

Problems solved by technology

These traditional and ordinary hydraulic cylinders can only rely on pumps or valves to control the speed of the hydraulic cylinder (piston rod) alone, which cannot make the hydraulic cylinder (piston rod) realize different stroke speeds of the hydraulic cylinder (piston rod) in different strokes. ; Even if the two-stage speed regulation of the hydraulic cylinder can be realized, the walking speed of the piston rod is the same, and it cannot meet the design requirements of technical characteristics under different conditions. At the same time, traditional and ordinary hydraulic cylinders have narrow variable speed range, low precision and poor stability. , can not realize the variable speed requirements of the hydraulic cylinder, can not meet the effective, random intelligent control of the hydraulic cylinder speed products

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