CN201448305U - Series-connection synchronous circuit of hydraulic cylinder - Google Patents

Series-connection synchronous circuit of hydraulic cylinder Download PDF

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Publication number
CN201448305U
CN201448305U CN2009200418214U CN200920041821U CN201448305U CN 201448305 U CN201448305 U CN 201448305U CN 2009200418214 U CN2009200418214 U CN 2009200418214U CN 200920041821 U CN200920041821 U CN 200920041821U CN 201448305 U CN201448305 U CN 201448305U
Authority
CN
China
Prior art keywords
lift cylinder
links
pilot operated
operated check
check valve
Prior art date
Application number
CN2009200418214U
Other languages
Chinese (zh)
Inventor
厉荣
季鹏
Original Assignee
江苏扬力数控机床有限公司
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Filing date
Publication date
Application filed by 江苏扬力数控机床有限公司 filed Critical 江苏扬力数控机床有限公司
Priority to CN2009200418214U priority Critical patent/CN201448305U/en
Application granted granted Critical
Publication of CN201448305U publication Critical patent/CN201448305U/en

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Abstract

The utility model relates to a hydraulic pressure driving return circuit of a charging and discharging synchronization device; a main lift cylinder and a second lift cylinder are connected with a hydraulic pressure source by a magnetic exchange valve I, the lower cavity of the main lift cylinder is connected with B port of the magnetic exchange valve I by a hydraulic control one-way valve, the upper cavity of the second lift cylinder is connected with A port of the magnetic exchange valve I by a magnetic exchange valve II, the upper cavity of the main lift cylinder and the lower cavity of the second lift cylinder are connected by an oil pipe; or the upper cavity of the main lift cylinder is connected with A port of the magnetic exchange valve I by the hydraulic control one-way valve I, the lower cavity of the second lift cylinder is connected with B port of the magnetic exchange valve I by the magnetic exchange valve II, and the lower cavity of the main life cylinder and the upper cavity of the second lift cylinder are communicated by the oil pipe. The hydraulic pressure driving return circuit has high synchronization precision and simple realization without load effect.

Description

Oil hydraulic cylinder series connection synchronizing circuit
Technical field
The utility model relates to a kind of hydraulic drive circuit of synchronous upper and lower materials device, relates in particular to the hydraulic cylinder synchronous loop of the upper and lower materials device of digital control plate lathe.
Background technique
In the Sheet Metal Processing equipment of present most of manufacturer production, the upper and lower materials device of plate adopts the oil hydraulic cylinder shunt circuit to realize the lifting of material, it is that oil cylinder with two identical sizes is connected in the hydraulic drive circuit of upper and lower materials device, as shown in Figure 2 in parallel.The defective of this oil hydraulic cylinder shunt circuit is: because during upper and lower material, the load that master cylinder 11, secondary cylinder 12 are born can not guarantee to equate, bear that little cylinder of load and always arrive first, arrive always and bear that bigger cylinder of load, the action of major and minor cylinder is asynchronous when causing upper and lower material.Therefore, the problem that its exists is: can not be synchronous, can not anti-bias load, and when the load of bearing when two cylinders does not wait, will tilt.
The model utility content
The utility model is at above problem, provide a kind of at two cylinder bearing loads not simultaneously, can avoid two cylinders to move nonsynchronous oil hydraulic cylinder series connection synchronizing circuit.
The technical solution of the utility model is: solenoid directional control valve one links to each other main lift cylinder, secondary lift cylinder with hydraulic power, the cavity of resorption of main lift cylinder links to each other with the B mouth of solenoid directional control valve one by Pilot operated check valve one, the epicoele of secondary lift cylinder links to each other with the A mouth of solenoid directional control valve one by Pilot operated check valve two, and the epicoele of main lift cylinder links to each other by oil pipe with the cavity of resorption of secondary lift cylinder; Perhaps the epicoele of main lift cylinder links to each other with the A mouth of solenoid directional control valve one by Pilot operated check valve one, and the cavity of resorption of secondary lift cylinder links to each other with the B mouth of solenoid directional control valve one by Pilot operated check valve two, and the cavity of resorption of main lift cylinder links to each other by oil pipe with the epicoele of secondary lift cylinder.
Also be communicated with the balance oil circuit on the described oil pipe; The solenoid directional control valve two that described balance oil circuit comprises Pilot operated check valve three, links to each other with hydraulic power; The filler opening of Pilot operated check valve three links to each other with the A mouth of solenoid directional control valve two, and the control mouth of Pilot operated check valve three links to each other with the B mouth of solenoid directional control valve two, and the oil outlet of Pilot operated check valve three links to each other with described oil pipe; Perhaps the filler opening of Pilot operated check valve three links to each other with the B mouth of solenoid directional control valve two, and the control mouth of Pilot operated check valve three links to each other with the A mouth of solenoid directional control valve two, and the oil outlet of Pilot operated check valve three links to each other with described oil pipe.
Between main lift cylinder and Pilot operated check valve one, be connected with one-way throttle valve one, be connected with one-way throttle valve two between secondary lift cylinder and the Pilot operated check valve two.
The utility model has been connected in series oil pipe between two cylinders, when the action of main lift cylinder, on it/the high-pressure and hydraulic oil of cavity of resorption enters the following/epicoele of secondary cylinder by oil pipe, drives secondary cylinder action.Because on the master cylinder/following cavity area and secondary cylinder under/go up cavity area to equate, so when the oil-feed of master cylinder cavity of resorption moved upward, secondary cylinder will move upward with identical speed; In like manner, when secondary cylinder epicoele oil-feed, two cylinders move downward with identical speed.In addition, because internal leakage during not at sustained height, can be carried out repairing or oil extraction to the series connection cylinder by the balance oil circuit, allow two cylinders come back to sustained height when two cylinders.The utility model synchronization accuracy height is realized simply not being subjected to load effect.
Description of drawings
Fig. 1 is a fundamental diagram of the present utility model
1 is main lift cylinder among the figure, the 2nd, and balance oil circuit, the 3rd, secondary lift cylinder, the 4th, Pilot operated check valve three, 5th, solenoid directional control valve two, 6th, solenoid directional control valve one, 7th, Pilot operated check valve one, 8th, Pilot operated check valve two, 9th, one-way throttle valve two, 10th, one-way throttle valve one.
Fig. 2 is the fundamental diagram of the utility model background technique situation
11 is master cylinders among the figure, the 12nd, and secondary cylinder.
Embodiment
The utility model as shown in Figure 1, solenoid directional control valve 1 links to each other main lift cylinder 1, secondary lift cylinder 3 with hydraulic power, the cavity of resorption of main lift cylinder 1 links to each other with the B mouth of solenoid directional control valve 1 by Pilot operated check valve 1, the epicoele of secondary lift cylinder 3 links to each other with the A mouth of solenoid directional control valve 1 by Pilot operated check valve 28, and the epicoele of main lift cylinder 1 links to each other by oil pipe with the cavity of resorption of secondary lift cylinder 3.Also be communicated with balance oil circuit 2 on the oil pipe; The solenoid directional control valve 25 that balance oil circuit 2 comprises Pilot operated check valve 34, links to each other with hydraulic power, the filler opening of Pilot operated check valve 34 links to each other with the A mouth of solenoid directional control valve 25, the control mouth of Pilot operated check valve 34 links to each other with the B mouth of solenoid directional control valve 25, and the oil outlet of Pilot operated check valve 34 links to each other with oil pipe.Between main lift cylinder 1 and Pilot operated check valve 1, be connected with one-way throttle valve 1, be connected with one-way throttle valve 29 between secondary lift cylinder 3 and the Pilot operated check valve 28.

Claims (3)

1. oil hydraulic cylinder series connection synchronizing circuit, solenoid directional control valve one links to each other main lift cylinder, secondary lift cylinder with hydraulic power, it is characterized in that, the cavity of resorption of main lift cylinder links to each other with the B mouth of solenoid directional control valve one by Pilot operated check valve one, the epicoele of secondary lift cylinder links to each other with the A mouth of solenoid directional control valve one by Pilot operated check valve two, and the epicoele of main lift cylinder links to each other by oil pipe with the cavity of resorption of secondary lift cylinder; Perhaps the epicoele of main lift cylinder links to each other with the A mouth of solenoid directional control valve one by Pilot operated check valve one, and the cavity of resorption of secondary lift cylinder links to each other with the B mouth of solenoid directional control valve one by Pilot operated check valve two, and the cavity of resorption of main lift cylinder links to each other by oil pipe with the epicoele of secondary lift cylinder.
2. oil hydraulic cylinder series connection synchronizing circuit according to claim 1 is characterized in that, also is communicated with the balance oil circuit on the described oil pipe; The solenoid directional control valve two that described balance oil circuit comprises Pilot operated check valve three, links to each other with hydraulic power; The filler opening of Pilot operated check valve three links to each other with the A mouth of solenoid directional control valve two, and the control mouth of Pilot operated check valve three links to each other with the B mouth of solenoid directional control valve two, and the oil outlet of Pilot operated check valve three links to each other with described oil pipe; Perhaps the filler opening of Pilot operated check valve three links to each other with the B mouth of solenoid directional control valve two, and the control mouth of Pilot operated check valve three links to each other with the A mouth of solenoid directional control valve two, and the oil outlet of Pilot operated check valve three links to each other with described oil pipe.
3. oil hydraulic cylinder series connection synchronizing circuit according to claim 1 is characterized in that, is connected with one-way throttle valve one between main lift cylinder and Pilot operated check valve one, is connected with one-way throttle valve two between secondary lift cylinder and the Pilot operated check valve two.
CN2009200418214U 2009-03-24 2009-03-24 Series-connection synchronous circuit of hydraulic cylinder CN201448305U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200418214U CN201448305U (en) 2009-03-24 2009-03-24 Series-connection synchronous circuit of hydraulic cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009200418214U CN201448305U (en) 2009-03-24 2009-03-24 Series-connection synchronous circuit of hydraulic cylinder

Publications (1)

Publication Number Publication Date
CN201448305U true CN201448305U (en) 2010-05-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009200418214U CN201448305U (en) 2009-03-24 2009-03-24 Series-connection synchronous circuit of hydraulic cylinder

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Country Link
CN (1) CN201448305U (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102022392A (en) * 2010-12-08 2011-04-20 江苏扬力数控机床有限公司 Four-cylinder synchronous hydraulic system
CN103466089A (en) * 2013-09-26 2013-12-25 许庆松 Fast-flying helicopter
CN104100587A (en) * 2014-06-09 2014-10-15 烟台宝钢钢管有限责任公司 Self-correction dual-hydraulic cylinder synchronizing system
CN104355266A (en) * 2014-10-11 2015-02-18 泰兴市塔力机械制造有限公司 Lifting hydraulic control system
CN104806589A (en) * 2015-05-04 2015-07-29 上海医疗器械股份有限公司 Automatic compensation structure and method of synchronous hydraulic cylinders of operating table or operating bed
CN105483870A (en) * 2016-01-26 2016-04-13 湖州南浔中兴丝织有限公司 Silk winding mechanical part of silk winding and strip forming production device
CN106122132A (en) * 2016-08-23 2016-11-16 中铁工程机械研究设计院有限公司 The horizontal movement control system of a kind of rock drill and method
CN106762894A (en) * 2016-12-27 2017-05-31 内蒙古北方重工业集团有限公司 The method of hydraulic double cylinder Synchronization Control self-tipping type semitrailer carriage lifting

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102022392A (en) * 2010-12-08 2011-04-20 江苏扬力数控机床有限公司 Four-cylinder synchronous hydraulic system
CN103466089A (en) * 2013-09-26 2013-12-25 许庆松 Fast-flying helicopter
CN104100587A (en) * 2014-06-09 2014-10-15 烟台宝钢钢管有限责任公司 Self-correction dual-hydraulic cylinder synchronizing system
CN104355266A (en) * 2014-10-11 2015-02-18 泰兴市塔力机械制造有限公司 Lifting hydraulic control system
CN104806589A (en) * 2015-05-04 2015-07-29 上海医疗器械股份有限公司 Automatic compensation structure and method of synchronous hydraulic cylinders of operating table or operating bed
CN105483870A (en) * 2016-01-26 2016-04-13 湖州南浔中兴丝织有限公司 Silk winding mechanical part of silk winding and strip forming production device
CN106122132A (en) * 2016-08-23 2016-11-16 中铁工程机械研究设计院有限公司 The horizontal movement control system of a kind of rock drill and method
CN106762894A (en) * 2016-12-27 2017-05-31 内蒙古北方重工业集团有限公司 The method of hydraulic double cylinder Synchronization Control self-tipping type semitrailer carriage lifting
CN106762894B (en) * 2016-12-27 2019-05-24 内蒙古北方重工业集团有限公司 The method of hydraulic double cylinder synchronously control self-tipping type semitrailer carriage lifting

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100505

Termination date: 20140324

C17 Cessation of patent right