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Hydraulic cylinder capable of adjusting throttling and cushioning stroke in two stages

A buffer stroke and adjustable technology, applied in the direction of fluid pressure actuating device, etc., can solve the problems of inability to adjust the time of the piston rod, weak repairability, impact of connecting equipment, etc., and achieve a simple structure, high pass rate, and easy processing Effect

Active Publication Date: 2016-04-06
HUBEI JIANGSHAN HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the known hydraulic cylinder constant throttle buffer device is mainly a hydraulic cylinder buffer device. Specifically, when the hydraulic cylinder is working, the pressure oil pushes the piston rod to reciprocate, preventing the piston rod from moving to the bottom at a faster speed. , has a great impact on the connecting equipment, and the buffer device installed at the end of the piston rod cannot adjust the time when the piston rod is retracted, and the repairability is not strong

Method used

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  • Hydraulic cylinder capable of adjusting throttling and cushioning stroke in two stages
  • Hydraulic cylinder capable of adjusting throttling and cushioning stroke in two stages
  • Hydraulic cylinder capable of adjusting throttling and cushioning stroke in two stages

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Embodiment Construction

[0030] figure 1 , 2 Among them, the present invention includes a cylinder body 10, a piston rod 9, a valve block 4, a stroke adjustment rod 6 installed in the valve block 4, a control rod 1, an adjustment seat 2, a pad 3, a one-way valve 5, and a large throttle valve core 12, the small throttle spool 13, the buffer copper sleeve 7 that is contained in the piston rod 9. Piston 8 is installed on the piston rod 9 and is flush with the end face, and the center of the front end of the piston rod 9 is provided with an inner hole for cooperating with the stroke adjustment rod 6, and the buffer copper sleeve 7 is installed in the inner hole at the front end of the piston rod 9. The buffer copper sleeve 7 and the piston rod 9 are press-fitted and connected by a press-fit fit tolerance, and the set screw is clicked, and the depth of the inner hole of the piston rod 9 is greater than the stroke adjustment rod 6 to adjust the longest length. The valve block 4 is equipped with a stroke a...

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Abstract

The invention discloses a hydraulic cylinder capable of adjusting throttling and cushioning stroke in two stages. The hydraulic cylinder comprises a cylinder body, a piston rod and a piston, and further comprises a valve block, wherein a stroke adjusting device and an oil duct III are arranged on the valve block; the stroke adjusting device comprises a stroke adjusting rod, a control rod and an adjusting seat; the control rod is connected with the stroke adjusting rod through the adjusting seat; an oil duct I is arranged on the stroke adjusting rod; a primary cushioning oil duct used for cushioning the piston rod before the end surface of the piston rod is in contact with the stroke adjusting rod, and a secondary cushioning oil duct II used for cushioning the piston rod after the end surface of the piston rod is in contact with the stroke adjusting rod are arranged on the valve block as well; the oil duct I is communicated with the oil duct III through the primary cushioning oil duct and a large throttle valve core mounted in the primary cushioning oil duct; and the secondary cushioning oil duct II is communicated with the oil duct III through a small throttle valve core. The hydraulic cylinder has the characteristics that the structure is simple, the one-time delivery-check qualified rate of the product is high, and the unqualified product is repairable; and when the pressure oil pushes the piston rod to retract, the movement time of the piston rod can be controlled in two stages, and the operating speed during the whole process is adjustable.

Description

technical field [0001] The invention relates to a buffer device hydraulic cylinder capable of adjusting throttling and buffer strokes in two stages. Background technique [0002] At present, the known hydraulic cylinder constant-throttle buffer device is mainly a hydraulic cylinder buffer device, specifically, when the hydraulic cylinder is working, the pressure oil pushes the piston rod to reciprocate, preventing the piston rod from moving to the bottom at a faster speed. , has a great impact on the connecting equipment, and the buffer device installed at the end of the piston rod cannot adjust the time when the piston rod is retracted, and the repairability is not strong. Contents of the invention [0003] The object of the present invention is to overcome the shortcomings of the hydraulic cylinder throttling and buffering device, and provide a hydraulic cylinder with two-stage adjustable throttling and buffering stroke. The running speed can be adjusted in the whole pr...

Claims

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Application Information

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IPC IPC(8): F15B15/14F15B15/22F15B15/20
Inventor 姚泽功郝建平石文浩刘洋张娜
Owner HUBEI JIANGSHAN HEAVY IND
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