CN203230658U - Spring cushion and release chamber arranged in at end of hinged pin of hydraulic cylinder - Google Patents

Spring cushion and release chamber arranged in at end of hinged pin of hydraulic cylinder Download PDF

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Publication number
CN203230658U
CN203230658U CN 201320154500 CN201320154500U CN203230658U CN 203230658 U CN203230658 U CN 203230658U CN 201320154500 CN201320154500 CN 201320154500 CN 201320154500 U CN201320154500 U CN 201320154500U CN 203230658 U CN203230658 U CN 203230658U
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CN
China
Prior art keywords
piston
spring
hydraulic cylinder
hinged pin
oil cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201320154500
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Chinese (zh)
Inventor
杨洁
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Changsha University of Science and Technology
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Changsha University of Science and Technology
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Publication date
Application filed by Changsha University of Science and Technology filed Critical Changsha University of Science and Technology
Priority to CN 201320154500 priority Critical patent/CN203230658U/en
Application granted granted Critical
Publication of CN203230658U publication Critical patent/CN203230658U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A spring cushion and release chamber arranged at the end of a hinged pin of a hydraulic cylinder is composed of a cylinder barrel 1, a hydraulic cylinder head 2, the hinged pin 3, a piston 4, a spring 5, a seal seat 6 and a one-way throttle valve 7. The spring cushion and release chamber is characterized in that the hinged pin 3 is a stepped shaft, a stepped blind hole is formed in the center, the piston 4 is arranged in the blind hole, the spring 5 is arranged between the piston 4 and the seal seat 6, the pressure identical with the working pressure of the hydraulic cylinder can be produced when the preload spring force of the spring 5 acts on the piston 4, and a left-end chamber of the piston 4 is communicated with a rodless cavity of the hydraulic cylinder through the one-way throttle valve 7 on the hydraulic cylinder head 2 and a small hole in the hinged pin 3. According to the spring cushion and release chamber, the hinged pin 3 serves as a spring type release accumulator, in the starting process of the hydraulic cylinder, surplus flow can enter the left-end chamber of the piston 4 to relieve the starting impact on the hydraulic cylinder, when the impact pressure is reduced, pressure oil flowing in the chamber originally flows back to the rodless cavity gradually to do work again, and energy is saved.

Description

A kind of spring buffer slowly-releasing cavity volume that is arranged on the hinged bearing pin of oil cylinder end
One, technical field:
The present invention relates to a kind of spring buffer slowly-releasing cavity volume that is arranged on the hinged bearing pin of oil cylinder end.
Two, background technique:
Along with China's industrial expansion, hydraulic transmission has been widely used on all kinds of heavy machinery equipments with control.
Hydraulic jack is topmost executive component in the Hydraulic Power Transmission System.Its performance has played very big effect to the performance of main frame.
Along with hydraulics today towards the development of high-pressure trend and speed up, the startup impact of hydraulic jack and reversing impact have brought very big hydraulic shock to main frame, have caused vibrations and the noise of main frame, very easily cause the early stage damage of hydraulic-pressure pump.Hydraulic shock causes the unnecessary consumption of energy, makes the rapid intensification of host hydraulic system, and then has reduced the viscosity of hydraulic work system medium, and the volumetric efficiency of system descends.
Producing this impact has its reason of being with the starting of load high-acceleration and commutation, and the reason of each equipment cooperation of main frame is arranged, and also has the reason that each major control element rationally mates in its dynamic response transient process in the hydraulic system.At these reasons, people have carried out a large amount of research and discussion, yet these and host work character are inherent, make that people want to take effect very little by the effort that this impact and energy consumption are improved or alleviated to more rational coupling.
At present, on all kinds of high-end hydraulic equipments, the smooth starting of hydraulic jack and energy-conservation buffering are one of difficult problems of puzzlement industry.
Three, summary of the invention:
Purpose of the present invention will be developed a kind of excellent performance exactly, and technology is reliable, the smooth starting of the hydraulic jack of energy-saving and noise-reducing and the new structure of energy-conservation buffering.
The present invention is a kind of spring buffer slowly-releasing cavity volume that is arranged on the hinged bearing pin of oil cylinder end, and its structure is combined by cylinder barrel 1, oil cylinder head 2, hinged bearing pin 3, piston 4, spring 5, sealing seat 6 and one-way throttle valve 7; It is characterized in that: hinged bearing pin 3 is a multidiameter shaft, and there is a ladder blind hole in its center portion, and piston 4 is contained in this blind hole; Be provided with spring 5 between piston 4 and the sealing seat 6; The preloading spring masterpiece of spring 5 is used in and can produces on the piston 4 and hydraulic jack working pressure uniform pressure value; The left end cavity volume of piston 4 is connected with the rodless cavity of oil cylinder by the one-way throttle valve 7 on the oil cylinder head 2 and the aperture on the hinged bearing pin 3.The invention enables hinged bearing pin 3 suitable spring slowly-releasing accumulators.
In the start-up course of oil cylinder, because the speed of oil cylinder has produced hydraulic shock when being in speedup, the unnecessary flow that build-up of pressure impacts can promote further compression springs 5 of piston 4, and shunting enters the left end cavity volume of piston 4, and the starting of alleviating oil cylinder is impacted; And when the surge pressure in the oil cylinder rodless cavity reduces, the former fluid that enters piston 4 left end cavity volumes can progressively flow back to rodless cavity under the effect of compressed spring 5, force the pressure oil that will be overflowed from relief valve originally to flow back to the rodless cavity acting again, saved energy and prevented flow-reversing impingement.
This structure is very resultful because the dynamic load of the jib support hydraulic pressure oil cylinder that jib elasticity causes is protected and kept the former fixed position of jib especially for long-armed equipment of concrete mixer class at work.
Four, description of drawings:
Accompanying drawing 1 is structure principle chart of the present invention.
Five, embodiment:
The specific embodiment of the present invention is: in the start-up course of oil cylinder, because the speed of oil cylinder has produced hydraulic shock when being in speedup, the unnecessary flow that build-up of pressure impacts can promote further compression spring 5 of piston 4, and shunting enters the left end cavity volume of piston 4, and the starting of alleviating oil cylinder is impacted; And when the surge pressure in the oil cylinder rodless cavity reduces, the former fluid that enters piston 4 left end cavity volumes can progressively flow back to rodless cavity under the effect of compressed spring 5, force the pressure oil that will be overflowed from relief valve originally to flow back to the rodless cavity acting again, saved energy and prevented flow-reversing impingement.

Claims (1)

1. spring buffer slowly-releasing cavity volume that is arranged on the hinged bearing pin of oil cylinder end, its structure is combined by cylinder barrel (1), oil cylinder head (2), hinged bearing pin (3), piston (4), spring (5), sealing seat (6) and one-way throttle valve (7); It is characterized in that: hinged bearing pin (3) is a multidiameter shaft, and there is a ladder blind hole in its center portion, and piston (4) is contained in the blind hole; Be provided with spring (5) between piston (4) and the sealing seat (6); The preloading spring masterpiece of spring (5) is used in and can produces on the piston (4) and hydraulic jack working pressure uniform pressure value; The left end cavity volume of piston (4) is connected with the rodless cavity of oil cylinder by the one-way throttle valve (7) on the oil cylinder head (2) and the aperture on the hinged bearing pin (3).
CN 201320154500 2013-04-01 2013-04-01 Spring cushion and release chamber arranged in at end of hinged pin of hydraulic cylinder Expired - Fee Related CN203230658U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320154500 CN203230658U (en) 2013-04-01 2013-04-01 Spring cushion and release chamber arranged in at end of hinged pin of hydraulic cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320154500 CN203230658U (en) 2013-04-01 2013-04-01 Spring cushion and release chamber arranged in at end of hinged pin of hydraulic cylinder

Publications (1)

Publication Number Publication Date
CN203230658U true CN203230658U (en) 2013-10-09

Family

ID=49286786

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320154500 Expired - Fee Related CN203230658U (en) 2013-04-01 2013-04-01 Spring cushion and release chamber arranged in at end of hinged pin of hydraulic cylinder

Country Status (1)

Country Link
CN (1) CN203230658U (en)

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131009

Termination date: 20140401