CN104329304B - A kind of stretcher leveler clamping mechanism multistage pressure controlling device - Google Patents
A kind of stretcher leveler clamping mechanism multistage pressure controlling device Download PDFInfo
- Publication number
- CN104329304B CN104329304B CN201410532171.9A CN201410532171A CN104329304B CN 104329304 B CN104329304 B CN 104329304B CN 201410532171 A CN201410532171 A CN 201410532171A CN 104329304 B CN104329304 B CN 104329304B
- Authority
- CN
- China
- Prior art keywords
- valve
- pilot operated
- electro
- operated check
- pressure
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
A kind of stretcher leveler clamping mechanism multistage pressure controlling device, comprise three road binders roads, first via low pressure: reduction valve entrance is communicated with high pressure oil, reduction valve outlet is connected with the first fluid-control one-way valve inlet, first fluid-control one-way valve outlet port is connected with the pressure oil port of electro-hydraulic reversing valve, and the oil circuit between reduction valve, the first Pilot operated check valve is parallel with pressure-detecting device and relief valve; Second road high pressure: the second fluid-control one-way valve outlet port is communicated with high pressure oil, the second fluid-control one-way valve inlet is connected with the pressure oil port of electro-hydraulic reversing valve; 3rd road binders controls: the pressure oil port of solenoid directional control valve is communicated with high pressure oil, the control mouth of first, second Pilot operated check valve is received in the selector valve outlet of solenoid directional control valve respectively, the selector valve outlet of electro-hydraulic reversing valve connects return cylinder rod chamber, the return opening of electro-hydraulic reversing valve connects return cylinder rodless cavity, by the combination of solenoid valve break-make, switch different oil circuits, realize multistage pressure and export, cost of the present invention is low, easy to maintenance.
Description
Technical field
The present invention relates to stretcher leveler technical field, be specifically related to a kind of stretcher leveler clamping mechanism multistage pressure controlling device.
Background technique
The head gripping mechanism hydraulic system main pump of sheet material tension force stretching straightening machine according to different operating mode, can export different system pressure.In head gripping mechanism working procedure, its upper and lower return cylinder needs the pressure of what different brackets according to working condition requirement, to ensure that clamp can clamp smoothly, unclamp workpiece, and makes mechanical part be in correct position to overhaul.Owing to there being other oil cylinder to carry out work in the process simultaneously, so main pump can not be utilized to set the working pressure of the whole grade of return cylinder.
Conventional solution is Set scale pressure valve in return cylinder loop, but the requirement of usage ratio valve to hydraulic system mounting, commissioning and maintenance is higher, also must arrange Normal hydraulic valve, and electrical control is also more complicated in its oil hydraulic circuit simultaneously.Such holistic cost is very high.
The element that the present invention relates to comprises reduction valve, relief valve, Pilot operated check valve, solenoid directional control valve and electro-hydraulic reversing valve etc., and cost is low, easy to maintenance.By ingenious setting, multistage pressure can be realized and export; And low pressure relief valve is set, when the passive tension of return cylinder piston rod, rod chamber can be avoided to produce pressurization, realize overload overflow protection.Electrical system only needs to provide conventional switching signal to control.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of this invention is to provide a kind of stretcher leveler clamping mechanism multistage pressure controlling device, cost is low, easy to maintenance.
In order to achieve the above object, the technological scheme that the present invention takes is:
A kind of stretcher leveler clamping mechanism multistage pressure controlling device, comprises three road binders roads,
First via low pressure: reduction valve 1 entrance is communicated with high pressure oil, reduction valve 1 outlet is connected with the first Pilot operated check valve 3 entrance, first Pilot operated check valve 3 outlet is connected with the second pressure oil port P2 of electro-hydraulic reversing valve 7, and the oil circuit between reduction valve 1, first Pilot operated check valve 3 is parallel with pressure-detecting device 2 and relief valve 4;
Second road high pressure: the second Pilot operated check valve 5 outlet is communicated with high pressure oil, and the second Pilot operated check valve 5 entrance is connected with the second pressure oil port P2 of electro-hydraulic reversing valve 7;
3rd road binders controls: the first pressure oil port P1 of solenoid directional control valve 6 is communicated with high pressure oil, first selector valve outlet A1 of solenoid directional control valve 6 receives the control mouth of the first Pilot operated check valve 3, and the second selector valve outlet B1 of solenoid directional control valve 6 receives the control mouth of the second Pilot operated check valve 5;
3rd selector valve outlet A2 of electro-hydraulic reversing valve 7 connects return cylinder rod chamber, and the second oil return inlet T 2 of electro-hydraulic reversing valve 7 connects return cylinder rodless cavity.
The setup pressure value of described relief valve 4 is a little more than reduction valve 1 preheating setting pressure value.
The invention has the beneficial effects as follows:
1, export the pressure of what different brackets, and low pressure overload overflow protection is provided.
2, this device performance is reliable, easy to maintenance, cost is low.
3, for the multistage pressure system needing different flow, as long as be replaced with the Pilot operated check valve with flows match latus rectum, adaptability is very strong.
Accompanying drawing explanation
Accompanying drawing is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
With reference to accompanying drawing, a kind of stretcher leveler clamping mechanism multistage pressure controlling device, comprises three road binders roads,
First via low pressure: reduction valve 1 entrance is communicated with high pressure oil, reduction valve 1 outlet is connected with the first Pilot operated check valve 3 entrance, first Pilot operated check valve 3 outlet is connected with the second pressure oil port P2 of electro-hydraulic reversing valve 7, at reduction valve 1, oil circuit between first Pilot operated check valve 3 is parallel with pressure-detecting device 2 and relief valve 4, the setup pressure value of relief valve 4 is a little more than reduction valve 1 preheating setting pressure value, high pressure oil is first decompressed to presetting force value through reduction valve 1, the second pressure oil port P2 of electro-hydraulic reversing valve 7 is arrived again after the first Pilot operated check valve 3, the setting value of reduction valve 1 and relief valve 4 is observed by pressure-detecting device 2,
Second road high pressure: the second Pilot operated check valve 5 outlet is communicated with high pressure oil, and the second Pilot operated check valve 5 entrance is connected with the second pressure oil port P2 of electro-hydraulic reversing valve 7, and its pressure is consistent with system pressure;
3rd road binders controls: the first pressure oil port P1 of solenoid directional control valve 6 is communicated with high pressure oil, first selector valve outlet A1 of solenoid directional control valve 6 receives the control mouth of the first Pilot operated check valve 3, second selector valve outlet B1 of solenoid directional control valve 6 receives the control mouth of the second Pilot operated check valve 5, is controlled the first Pilot operated check valve 3, second Pilot operated check valve 5 in first via low pressure, the second road high pressure two oil circuit by solenoid directional control valve 6 respectively;
3rd selector valve outlet A2 of electro-hydraulic reversing valve 7 connects return cylinder rod chamber, and the second oil return inlet T 2 of electro-hydraulic reversing valve 7 connects return cylinder rodless cavity.
Working principle of the present invention is:
Low pressure operating mode: when device needs to export the pressure preset, first via low pressure oil enters oil cylinder, and now electrical system disconnects the electric signal of solenoid directional control valve 6 electromagnet, makes first via low pressure oil by the first Pilot operated check valve 3; Simultaneously electrical system disconnects the electric signal of electro-hydraulic reversing valve 7 electromagnet, to make from the first Pilot operated check valve 3 hydraulic oil out through the P2-A2 passage of electro-hydraulic reversing valve 7 to cylinder rod chamber.
High pressure operating mode: when device needs to export high pressure oil, second road high pressure oil enters oil cylinder, now electrical system sends the electric signal of conducting solenoid directional control valve 6 electromagnet, so solenoid directional control valve 6 spool is in P1-B1 and the first oil return inlet T 1-A1 passage, namely the control mouth of oil through P1-B1 passage to the second Pilot operated check valve 5 is controlled, make the second Pilot operated check valve 5 import and export in on-state, system high pressure oil flows through the second Pilot operated check valve 5 oppositely installed; Simultaneously electrical system disconnects the electric signal of electro-hydraulic reversing valve 7 electromagnet, to make from the second Pilot operated check valve 5 hydraulic oil out through the P2-A2 passage of electro-hydraulic reversing valve 7 to cylinder rod chamber.
Zero-pressure operating mode: when device does not need delivery pressure, cut off the pressure oil entering oil cylinder, the electric signal of electrical system conducting electro-hydraulic reversing valve 7 electromagnet, hydraulic oil is made to be in P2-the 4th selector valve outlet B2 and T2-A2 passage through the spool of electro-hydraulic reversing valve 7, because A2 mouth is connected to cylinder rod chamber, therefore cylinder rod chamber is equivalent to also be connected on T2 mouth after T2-A2 connection, the pressure oil of electro-hydraulic reversing valve 7 inlet would not be switched to oil cylinder.
Overfall working condition: when device needs overload overflow protection, first via low pressure oil is unobstructed, electrical system disconnects the electric signal of electro-hydraulic reversing valve 7 electromagnet, makes the superpressure hydraulic oil of cylinder rod chamber through the outlet of P2-A2 passage to the first Pilot operated check valve 3 of electro-hydraulic reversing valve 7; Electrical system disconnects the electric signal of solenoid directional control valve 6 electromagnet simultaneously; its spool is made to be in P-A passage; namely oily P1-A1 passage to the first Pilot operated check valve 3 through solenoid directional control valve 6 of control controls mouth and opens its spool; make the first Pilot operated check valve 3 import and export in on-state; in such oil cylinder, superpressure hydraulic oil enters low pressure relief valve 4 entrance after electro-hydraulic reversing valve 7 and the first Pilot operated check valve 3, carries out low pressure spill protection.
Claims (1)
1. a stretcher leveler clamping mechanism multistage pressure controlling device, is characterized in that: comprise three road binders roads,
First via low pressure: reduction valve (1) entrance is communicated with high pressure oil, reduction valve (1) outlet is connected with the first Pilot operated check valve (3) entrance, first Pilot operated check valve (3) outlet is connected with the second pressure oil port P2 of electro-hydraulic reversing valve (7), the oil circuit between reduction valve (1), the first Pilot operated check valve (3) is parallel with pressure-detecting device (2) and relief valve (4);
Second road high pressure: the second Pilot operated check valve (5) outlet is communicated with high pressure oil, and the second Pilot operated check valve (5) entrance is connected with the second pressure oil port P2 of electro-hydraulic reversing valve (7);
3rd road binders controls: the first pressure oil port P1 of solenoid directional control valve (6) is communicated with high pressure oil, first selector valve outlet A1 of solenoid directional control valve (6) receives the control mouth of the first Pilot operated check valve (3), and the second selector valve outlet B1 of solenoid directional control valve (6) receives the control mouth of the second Pilot operated check valve (5);
3rd selector valve outlet A2 of electro-hydraulic reversing valve (7) connects return cylinder rod chamber, and the second oil return inlet T 2 of electro-hydraulic reversing valve (7) connects return cylinder rodless cavity;
The setup pressure value of relief valve (4) is a little more than reduction valve (1) preheating setting pressure value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410532171.9A CN104329304B (en) | 2014-10-10 | 2014-10-10 | A kind of stretcher leveler clamping mechanism multistage pressure controlling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410532171.9A CN104329304B (en) | 2014-10-10 | 2014-10-10 | A kind of stretcher leveler clamping mechanism multistage pressure controlling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104329304A CN104329304A (en) | 2015-02-04 |
| CN104329304B true CN104329304B (en) | 2016-04-27 |
Family
ID=52404089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410532171.9A Active CN104329304B (en) | 2014-10-10 | 2014-10-10 | A kind of stretcher leveler clamping mechanism multistage pressure controlling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104329304B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139582B (en) * | 2018-09-20 | 2024-06-28 | 南京工业职业技术学院 | Body-building equipment based on hydraulic system |
| CN110206771B (en) * | 2019-05-20 | 2020-06-16 | 广州宝力特液压密封有限公司 | Hydraulic system for recreation facility |
| CN114151031B (en) * | 2021-12-10 | 2024-02-27 | 北京捷杰西科技股份有限公司 | Pressurizing system for turnbuckle pliers |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704037B (en) * | 2009-11-02 | 2011-12-14 | 一重集团大连设计研究院有限公司 | Hydraulic loop system for controlling roll gap of all-hydraulic flattening machine |
| DE102011104530A1 (en) * | 2011-02-04 | 2012-08-09 | Robert Bosch Gmbh | Hydraulic actuating arrangement |
| CN202685338U (en) * | 2012-07-27 | 2013-01-23 | 平阳县力奇液压机械制造有限公司 | Hydraulic system of high-speed hydraulic stretcher |
| CN103486092B (en) * | 2013-09-14 | 2016-04-20 | 中国重型机械研究院股份公司 | A kind of hydraulic stopper rod control system |
| CN204175682U (en) * | 2014-10-10 | 2015-02-25 | 中国重型机械研究院股份公司 | A kind of stretcher leveler clamping mechanism multistage pressure regulation structure |
-
2014
- 2014-10-10 CN CN201410532171.9A patent/CN104329304B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104329304A (en) | 2015-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204175682U (en) | A kind of stretcher leveler clamping mechanism multistage pressure regulation structure | |
| CN102518609B (en) | High Speed Punch Hydraulic System | |
| CN104329304B (en) | A kind of stretcher leveler clamping mechanism multistage pressure controlling device | |
| CN100557251C (en) | Non shaft support hydraulic system | |
| US10323658B2 (en) | Hydraulic drive system for operation table | |
| CN101704037B (en) | Hydraulic loop system for controlling roll gap of all-hydraulic flattening machine | |
| CN108591147A (en) | Quarry tipper constant pressure determines variable delivery hydraulic system | |
| CN102139830A (en) | Load-sensitive double-power control device suitable for crawler crane | |
| CN210034023U (en) | Hydraulic control system of quick-change device | |
| CN103233927B (en) | Hydraulic control system of hydraulic tower crane and hydraulic tower crane | |
| CN203214291U (en) | Concrete pump truck and automatic reverse pump device thereof | |
| CN103008362A (en) | Hydraulic press-down parallel servo control method and loop for plate and strip rolling mill | |
| CN110094382A (en) | A kind of fast replacing device hydraulic control system | |
| CN104454707A (en) | Simple hydraulic system for bending machine | |
| US11618232B2 (en) | Apparatus for controlling the switch-over of hydraulic cylinders | |
| CN104235091A (en) | Hydraulic control system of anchor chain tension tester | |
| CN107208399B (en) | Control valve for construction equipment | |
| CN213899489U (en) | Hydraulic system of breaking hammer | |
| CN104309161A (en) | Multi-cylinder piecewise pressure regulation system for hydraulic press | |
| CN208816435U (en) | Fast replacing device hydraulic circuit | |
| CN204921504U (en) | Stamping equipment's hydraulic control device | |
| CN201170221Y (en) | Non-shaft support hydraulic system | |
| CN104828717B (en) | Hydraulic control system and wheeled crane | |
| CN202360484U (en) | Hydraulic system for high-speed punch press | |
| CN102661296A (en) | Hydraulic system and engineering machinery vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |