CN103557197B - Oil quick-returning-disccircuit circuit for oil cylinder of hydraulic machine - Google Patents

Oil quick-returning-disccircuit circuit for oil cylinder of hydraulic machine Download PDF

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Publication number
CN103557197B
CN103557197B CN201310588160.8A CN201310588160A CN103557197B CN 103557197 B CN103557197 B CN 103557197B CN 201310588160 A CN201310588160 A CN 201310588160A CN 103557197 B CN103557197 B CN 103557197B
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China
Prior art keywords
oil
reversing valve
main reversing
oil cylinder
return
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CN201310588160.8A
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CN103557197A (en
Inventor
刘如红
胡杰
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Wuxi blue force Intelligent Equipment Co., Ltd.
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WUXI LANLI MACHINE TOOL CO Ltd
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Abstract

The present invention relates to a kind of oil cylinder and move back oil return line, is oil quick-returning-disccircuit circuit for oil cylinder of hydraulic machine specifically.It comprises oil cylinder and main reversing valve, and oil cylinder is vertical.Main reversing valve has the first oil outlet, the second oil outlet, filler opening and return opening.First oil outlet of main reversing valve is connected with oil cylinder cavity of resorption by oil pipe, and the return opening of main reversing valve is connected with fuel tank by oil pipe.Be characterized in that oil cylinder cavity of resorption is connected with the filler opening of main reversing valve by oil pipe, the second oil outlet of main reversing valve is connected with fuel tank by oil pipe.This oil-discharging circuit when not increasing the bore of the first oil outlet and return opening on main reversing valve and not setting up the oil return solenoid valve of special oil return, just can realize the quick oil return effect of hydraulic press cylinder, reduce manufacture cost.

Description

Oil quick-returning-disccircuit circuit for oil cylinder of hydraulic machine
Technical field
The present invention relates to a kind of oil cylinder and move back oil return line, is oil quick-returning-disccircuit circuit for oil cylinder of hydraulic machine specifically.
Background technique
Hydraulic press normally controls the number of compressed oil in oil cylinder cavity of resorption and carrys out pilot pressure, in order to realize this control, the oil cylinder cavity of resorption of hydraulic press all needs to carry out oil suction and oil extraction, and in order to improve the working efficiency of hydraulic press, the oil cylinder cavity of resorption of hydraulic press needs quick oil-discharging usually.
At present, the hydraulic press cylinder in industry returns oil-discharging circuit, comprises oil cylinder and main reversing valve, and oil cylinder is vertical; Main reversing valve has the first oil outlet, the second oil outlet, filler opening and return opening; First oil outlet of main reversing valve is connected with oil cylinder cavity of resorption by oil pipe, and the return opening of main reversing valve is connected with fuel tank by oil pipe, and the filler opening of main reversing valve is only for being connected with to the oil pump of pump oil in this loop; During main reversing valve energising, the oil circuit in main reversing valve is from the return opening of the first oil outlet to main reversing valve of main reversing valve, the filler opening from main reversing valve to the second oil outlet of main reversing valve respectively.This hydraulic press cylinder is return oil-discharging circuit and is normally increased the bore of the first oil outlet and return opening on main reversing valve in order to the effect realizing quick oil return or set up the oil return solenoid valve of special oil return, and the filler opening of main reversing valve cuts little ice when the oil return of oil cylinder cavity of resorption.But the bore of the first oil outlet and return opening is subject to the restriction of valve body size on main reversing valve, can not infinitely increase, and the oil return solenoid valve setting up special oil return can make the manufacture cost of hydraulic press oil-discharging circuit increase.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of oil quick-returning-disccircuit circuit for oil cylinder of hydraulic machine, this oil-discharging circuit can when not increasing the bore of the first oil outlet and return opening on main reversing valve and not setting up the oil return solenoid valve of special oil return, just can realize the quick oil-discharging effect of hydraulic press cylinder, reduce manufacture cost.
For solving the problem, take following scheme:
Oil quick-returning-disccircuit circuit for oil cylinder of hydraulic machine of the present invention comprises oil cylinder and main reversing valve, and oil cylinder is vertical.Main reversing valve has the first oil outlet, the second oil outlet, filler opening and return opening.First oil outlet of main reversing valve is connected with oil cylinder cavity of resorption by oil pipe, and the return opening of main reversing valve is connected with fuel tank by oil pipe.Be characterized in that oil cylinder cavity of resorption is connected with the filler opening of main reversing valve by oil pipe, the second oil outlet of main reversing valve is connected with fuel tank by oil pipe.
The height of height higher than fuel tank position of described oil cylinder position to the further improvement project of the present invention.Two position four-way solenoid valve positions are between oil cylinder position and fuel tank position.The advantage of such improvement is more conducive to oil to enter into fuel tank from oil cylinder.
Adopt above scheme, have the following advantages:
Because the first oil outlet of the main reversing valve of oil quick-returning-disccircuit circuit for oil cylinder of hydraulic machine of the present invention is connected with oil cylinder cavity of resorption by oil pipe, the return opening of main reversing valve is connected with fuel tank by oil pipe, oil cylinder cavity of resorption is connected with the filler opening of main reversing valve by oil pipe simultaneously, and the second oil outlet of main reversing valve is connected with fuel tank by oil pipe.During oil return, oil in oil cylinder enters in the first oil outlet on main reversing valve and filler opening by oil pipe, the oil content that main reversing valve controls the first oil outlet and filler opening entering into main reversing valve does not flow to return opening and second oil outlet of main reversing valve, enters into return opening and enters into fuel tank with the oil of the second oil outlet respectively by the oil pipe be connected with them.So just there are two oil pipe oil returns at the same time, the efficiency of oil return is just improve when not increasing the bore of the first oil outlet and return opening on main reversing valve or setting up the oil return solenoid valve of special oil return, avoid the bore increasing the first oil outlet and return opening on main reversing valve, be subject to the problem of main reversing valve body size restriction, avoid the problem that the oil return solenoid valve setting up special oil return makes hydraulic press oil-discharging circuit manufacture cost increase.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of oil quick-returning-disccircuit circuit for oil cylinder of hydraulic machine of the present invention.
Embodiment
Be described in further detail below in conjunction with the oil quick-returning-disccircuit circuit for oil cylinder of hydraulic machine of accompanying drawing to invention.
As shown in Figure 1, oil quick-returning-disccircuit circuit for oil cylinder of hydraulic machine of the present invention comprises oil cylinder 1 and main reversing valve 2, and oil cylinder 1 is in vertical.Main reversing valve 2 has the first oil outlet B, the second oil outlet A, oil inlet P and oil return inlet T.First oil outlet B of main reversing valve 2 is connected with oil cylinder 1 cavity of resorption by oil pipe, the oil inlet P of main reversing valve 2 is connected with oil cylinder 1 cavity of resorption by oil pipe, the oil return inlet T of main reversing valve 2 is connected with fuel tank 3 by oil pipe, and the second oil outlet A of main reversing valve 2 is connected with fuel tank 3 by oil pipe.The height of the position of oil cylinder 1 described in the present embodiment is higher than the height of fuel tank 3 position; Described main reversing valve 2 position is between oil cylinder 1 position and fuel tank 3 position.
During work, due to the effect of weight on oil cylinder 1 piston rod, oil in oil cylinder 1 enters in the first oil outlet B on main reversing valve 2 and oil inlet P by oil pipe, the oil content that main reversing valve 2 controls the first oil outlet B and oil inlet P entering into main reversing valve 2 does not flow to oil return inlet T and the second oil outlet A of main reversing valve 2, enters into oil return inlet T and enters into fuel tank 3 with the oil of the second oil outlet A respectively by the oil pipe be connected with them.

Claims (2)

1. oil quick-returning-disccircuit circuit for oil cylinder of hydraulic machine, comprise oil cylinder (1) and main reversing valve (2), oil cylinder (1) is in vertical; Main reversing valve (2) has the first oil outlet (B), the second oil outlet (A), filler opening (P) and return opening (T); First oil outlet (B) of main reversing valve (2) is connected with oil cylinder (1) cavity of resorption by oil pipe, and the return opening (T) of main reversing valve (2) is connected with fuel tank (3) by oil pipe; It is characterized in that oil cylinder (1) cavity of resorption is connected with the filler opening (P) of main reversing valve (2) by oil pipe, second oil outlet (A) of main reversing valve (2) is connected with fuel tank (3) by oil pipe.
2. oil quick-returning-disccircuit circuit for oil cylinder of hydraulic machine as claimed in claim 1, is characterized in that the height of the height of described oil cylinder (1) position higher than fuel tank (3) position; Described main reversing valve (2) position is between oil cylinder (1) position and fuel tank (3) position.
CN201310588160.8A 2013-11-21 2013-11-21 Oil quick-returning-disccircuit circuit for oil cylinder of hydraulic machine Active CN103557197B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310588160.8A CN103557197B (en) 2013-11-21 2013-11-21 Oil quick-returning-disccircuit circuit for oil cylinder of hydraulic machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310588160.8A CN103557197B (en) 2013-11-21 2013-11-21 Oil quick-returning-disccircuit circuit for oil cylinder of hydraulic machine

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CN103557197A CN103557197A (en) 2014-02-05
CN103557197B true CN103557197B (en) 2015-11-11

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CN201310588160.8A Active CN103557197B (en) 2013-11-21 2013-11-21 Oil quick-returning-disccircuit circuit for oil cylinder of hydraulic machine

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105822628A (en) * 2016-04-27 2016-08-03 安徽合力股份有限公司 Pneumatic oil discharge system of hydraulic oil cylinder

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1401374A (en) * 1972-02-22 1975-07-16 Putzmeister Interholding Gmbh Apparatus for damping the pressure increase of hydrostatic drives
JPS58174703A (en) * 1982-04-03 1983-10-13 Kato Seisakusho:Kk Speed control device for actuator
JPH06307407A (en) * 1993-04-20 1994-11-01 Furukawa Co Ltd Valve block for hydraulic cylinder
JPH1121941A (en) * 1997-07-01 1999-01-26 Yutani Heavy Ind Ltd Hydraulic controller for hydraulic backhoe
JP2001317504A (en) * 2000-05-01 2001-11-16 Shin Caterpillar Mitsubishi Ltd Cylinder actuator controlling method and its device
CN1836110A (en) * 2003-08-20 2006-09-20 株式会社小松制作所 Hydraulic drive control device
CN102562700A (en) * 2012-01-20 2012-07-11 锦州市力特缸泵阀液压制造有限公司 Combined-type multi-way reversing valve for coal-mine full-hydraulic underground drilling machine
CN203560194U (en) * 2013-11-21 2014-04-23 无锡市蓝力机床有限公司 Retreating type rapid oil discharging circuit of oil cylinder of hydraulic machine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1401374A (en) * 1972-02-22 1975-07-16 Putzmeister Interholding Gmbh Apparatus for damping the pressure increase of hydrostatic drives
JPS58174703A (en) * 1982-04-03 1983-10-13 Kato Seisakusho:Kk Speed control device for actuator
JPH06307407A (en) * 1993-04-20 1994-11-01 Furukawa Co Ltd Valve block for hydraulic cylinder
JPH1121941A (en) * 1997-07-01 1999-01-26 Yutani Heavy Ind Ltd Hydraulic controller for hydraulic backhoe
JP2001317504A (en) * 2000-05-01 2001-11-16 Shin Caterpillar Mitsubishi Ltd Cylinder actuator controlling method and its device
CN1836110A (en) * 2003-08-20 2006-09-20 株式会社小松制作所 Hydraulic drive control device
CN102562700A (en) * 2012-01-20 2012-07-11 锦州市力特缸泵阀液压制造有限公司 Combined-type multi-way reversing valve for coal-mine full-hydraulic underground drilling machine
CN203560194U (en) * 2013-11-21 2014-04-23 无锡市蓝力机床有限公司 Retreating type rapid oil discharging circuit of oil cylinder of hydraulic machine

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Address after: 214174 Jiangsu province Wuxi city Huishan District Yanqiao Jade Weir Road No. 98

Patentee after: Wuxi blue force Intelligent Equipment Co., Ltd.

Address before: 214174 Jiangsu province Wuxi city Huishan District Yanqiao Jade Weir Road No. 98

Patentee before: Wuxi Lanli Machine Tool Co., Ltd.

CP01 Change in the name or title of a patent holder