CN2839684Y - Bending machine hydraulic system - Google Patents
Bending machine hydraulic system Download PDFInfo
- Publication number
- CN2839684Y CN2839684Y CN 200520070940 CN200520070940U CN2839684Y CN 2839684 Y CN2839684 Y CN 2839684Y CN 200520070940 CN200520070940 CN 200520070940 CN 200520070940 U CN200520070940 U CN 200520070940U CN 2839684 Y CN2839684 Y CN 2839684Y
- Authority
- CN
- China
- Prior art keywords
- valve
- oil
- way
- oil cylinder
- mouth
- 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 - Lifetime
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model solves the problems of more complicated unloading circuit, unreliable unloading and complex backpressure adjusting of a hydraulic control system of the existing bending machine. The hydraulic system of the bending machine of the utility model comprises an oil pump, an oil tank, a three-position four-way change valve (50), and a liquid replenishing valve (110), wherein the liquid replenishing valve (110) is connected between the upper cavities of the oil tank and the oil cylinder; an oil outlet of the oil pump is connected to the oil tank by a two-way cartridge valve (12); a port P of the three-position four-way change valve (50) is connected to the oil outlet of oil pump, and a port B is connected to the lower cavity of the oil cylinder by a poppet valve (40) and a one-way throttle valve (30); the port B is connected to the lower cavity of the oil cylinder by a back pressure valve (60) and a throttling valve (61), and the port B also is connected to a control port of the replenishing valve (110); a port A of the three-position four-way change valve (50) is connected to the upper cavity of the oil cylinder by a throttling valve (70); two one-way valves (80) are connected in parallel at both ends of the throttling valve (70). The utility model has the technical scheme that the unloading circuit is made of the mid position function of a change valve and a one-way valve and a damping of a port on the upper cavity, and has the advantages of simplicity and reliability. Besides, the back pressure control adopts the pressure valve and is easily adjusted.
Description
Technical field
The utility model relates to a kind of bender hydraulic control system, specifically, is the synchronous bender hydraulic control system of a kind of non-electro-hydraulic servo, is particularly useful for turning round the bender hydraulic control of types such as axle is synchronous, Hydraulic Synchronizing.
Background technique
The at present domestic hydraulic control system principle of turning round a Synchronous Bending machine is similar, and substantially become decades, and hydraulic element all are to adopt domestic general board-like installation valve.Whole hydraulic control valve group quality is bigger.
The relief circuit of the hydraulic system of existing bender is complicated, and off-load is unreliable.
In addition, the hydraulic system of existing bender, in lathe fast following time,, the oil of oil cylinder cavity of resorption is through the direct oil sump tank of Pilot operated check valve, few one controlling unit, Security deficiency; Backpressure regulation is that restriction is changed trouble by the change restriction size, and back pressure is vulnerable to the influence of oil temperature, load variations, thereby influences the stationarity of lathe; Its automatically controlled part is loaded down with trivial details, and electromagnetic coil quantity reaches 6.
Summary of the invention
The technical problem that the utility model solves is exactly that existing relief circuit is complicated, and insecure problem of off-load and backpressure regulation are loaded down with trivial details, unreliable problem.
Bender hydraulic system described in the utility model comprises oil pump, fuel tank, three position four-way directional control valve 50, and liquid-filling valve 110 is connected between fuel tank and the oil cylinder epicoele; The oil outlet of oil pump is through two-way plug-in valve 12 connected tanks; The P mouth of three position four-way directional control valve 50 connects the oil outlet of oil pump, and the B mouth connects the oil cylinder cavity of resorption through poppet valve 40, one-way throttle valve 30; The B mouth also connects the oil cylinder cavity of resorption through a back pressure valve 60, throttle valve 61; The B mouth also connects the control mouth of liquid-filling valve 110; The A mouth of three position four-way directional control valve 50 connects the oil cylinder epicoele through throttle valve 70; Be parallel with one-way valve 80 at the two ends of throttle valve 70.The utility model utilizes the one-way valve and the damping of selector valve meta function and epicoele hydraulic fluid port, constitutes relief circuit, not only simply but also reliable; Adopt back pressure valve 60 adjusting back pressures convenient and reliable.
In order to overcome lathe fast following time, the oil of oil cylinder cavity of resorption is through the direct oil sump tank of Pilot operated check valve, the problem of Security deficiency; As improvement, between the T of three position four-way directional control valve 50 mouth and oil cylinder cavity of resorption, be connected to safety valve 90.
For any bender hydraulic system recited above, remote pressure regulating valve 10 connects the control mouth of two-way plug-in valve 12.The utility model is a modular type with the system pressure adjusted design, and functions such as ratio regulatory function, electromagnetism relief function, safety protection function can be provided.
For any bender hydraulic system recited above, except that three position four-way directional control valve 50 is the plate valve, all the other control valves are screw-in cartridge valve.Adopt the screw-in cartridge valve control technique, back pressure valve, cavity of resorption safety valve, electromagnetism poppet valve all adopt does not have the cone valve of leakage, prevents to leak; Also reduced the element cost significantly, made to the utlity model has higher price performance.
Relief circuit of the present utility model is reliable simply again; The utility model utilizes at oil cylinder cavity of resorption safety pressure valve 90 in parallel, forms two safety circuits, prevents from that the cavity of resorption oil pressure from raising unusually to damage oil cylinder and pipeline, Safety performance height; Electromagnetic coil quantity of the present utility model is 3, has simplified automatically controlled part greatly, has reduced the fault probability of happening.
Description of drawings
Fig. 1 is a kind of embodiment's of the utility model a hydraulic system principle figure;
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Bender hydraulic system shown in Fig. 1 comprises oil pump 130, fuel tank 120, three position four-way directional control valve 50.Liquid-filling valve 110 is connected between fuel tank 120 and oil cylinder 140 epicoeles.The oil outlet of oil pump 130 is through two-way plug-in valve 12 connected tanks 120.Remote pressure regulating valve 10 connects the control mouth of two-way plug-in valve 12.
The P mouth of three position four-way directional control valve 50 connects the oil outlet of oil pump 130, and the B mouth connects oil cylinder 140 cavity of resorptions through poppet valve 40, one-way throttle valve 30, and the A mouth connects the oil cylinder epicoele through throttle valve 70.The B mouth of three position four-way directional control valve 50 also connects the oil cylinder cavity of resorption through a back pressure valve 60, throttle valve 61.The B mouth of three position four-way directional control valve 50 also connects the control mouth of liquid-filling valve 110.Be parallel with one-way valve 80 at the two ends of throttle valve 70.Between the T of three position four-way directional control valve 50 mouth and oil cylinder cavity of resorption, be connected to safety valve 90.
Except that three position four-way directional control valve 50 is the plate valve, all the other control valves are screw-in cartridge valve.
Principle is introduced
1, pressure control: the pressure that comes the regulator solution pressing system by remote pressure regulating valve 10 control two-way plug-in valves 12.
2, fast down: YI must not electricity, and Y2, Y3 get when electric, and pressure oil flows to one-way valve 80 to oil cylinder epicoele rodless cavity by the A mouth of solenoid directional control valve 50, and the oil of oil cylinder cavity of resorption flows to one-way throttle valve 30, poppet valve 40, solenoid directional control valve 50 oil sump tanks.And it is oil-filled by open type liquid-filling valve 110 simultaneously to oil cylinder rodless cavity.Adjusting one-way throttle valve 30 can be controlled slide block and descend speed soon.
3, the worker advances: Y1, Y3 must not electricity, and Y2 gets when electric, and liquid-filling valve 110 cuts out.Pressure oil flows to one-way valve 80 to oil cylinder epicoele rodless cavity by the A mouth of solenoid directional control valve 50, and the oil of oil cylinder cavity of resorption flows to throttle valve 61, back pressure valve 60, solenoid directional control valve 50 oil sump tanks.At oil cylinder cavity of resorption safety pressure valve 90 in parallel, prevent from that the cavity of resorption oil pressure from raising unusually to damage oil cylinder and pipeline.
4, off-load: after the bender worker advances pressurize, Y1, Y2, Y3 dead electricity.Pressure in the oil cylinder epicoele rodless cavity is by throttling 70 off-loads.
5, return: Y2, Y3 dead electricity, Y1 gets electric, pressure oil by the B mouth of solenoid directional control valve 50 to poppet valve 40, one-way throttle valve 30 to oil cylinder cavity of resorption rod chamber, the hydraulic oil of oil cylinder epicoele rodless cavity is by the liquid-filling valve oil sump tank.
Table 1 is the corresponding actions sequence list that each electromagnet among Fig. 1 gets electric situation and bender.
Table 1
| Y1 | Y2 | Y3 | ||
| Down fast | · | · | ||
| The worker advances | · | |||
| Off-load | ||||
| Snap back | · | |||
| Stop |
Claims (5)
1. the bender hydraulic system comprises oil pump, fuel tank, three position four-way directional control valve (50), and liquid-filling valve (110) is connected between fuel tank and the oil cylinder epicoele; The oil outlet of oil pump is through two-way plug-in valve (12) connected tank; The P mouth of three position four-way directional control valve (50) connects the oil outlet of oil pump, and the B mouth connects the oil cylinder cavity of resorption through poppet valve (40), one-way throttle valve (30); The B mouth also connects the control mouth of liquid-filling valve (110); It is characterized in that: the A mouth of three position four-way directional control valve (50) connects the oil cylinder epicoele through throttle valve (70), and the B mouth also connects the oil cylinder cavity of resorption through a back pressure valve (60), throttle valve (61); Be parallel with one-way valve (80) at the two ends of throttle valve (70).
2. bender hydraulic system according to claim 1 is characterized in that: be connected to safety valve (90) between the T mouth of three position four-way directional control valve (50) and oil cylinder cavity of resorption.
3. bender hydraulic system according to claim 1 and 2 is characterized in that: remote pressure regulating valve (10) connects the control mouth of two-way plug-in valve (12).
4. bender hydraulic system according to claim 1 and 2 is characterized in that: except that three position four-way directional control valve (50) was plate valve, all the other control valves were screw-in cartridge valve.
5. bender hydraulic system according to claim 3 is characterized in that: except that three position four-way directional control valve (50) was plate valve, all the other control valves were screw-in cartridge valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520070940 CN2839684Y (en) | 2005-04-21 | 2005-04-21 | Bending machine hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520070940 CN2839684Y (en) | 2005-04-21 | 2005-04-21 | Bending machine hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2839684Y true CN2839684Y (en) | 2006-11-22 |
Family
ID=37427668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520070940 Expired - Lifetime CN2839684Y (en) | 2005-04-21 | 2005-04-21 | Bending machine hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2839684Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518613A (en) * | 2011-12-03 | 2012-06-27 | 南京埃尔法电液技术有限公司 | Bender hydraulic system |
| CN102691681A (en) * | 2012-06-26 | 2012-09-26 | 重庆键英液压机电有限公司 | Novel three-point type bending machine hydraulic system with quick energy conservation |
| CN103032412A (en) * | 2012-12-24 | 2013-04-10 | 南京埃尔法电液技术有限公司 | Hydraulic control system with safety protection function for hydraulic machine tool |
| CN103334971A (en) * | 2013-07-22 | 2013-10-02 | 邹城市博威液压机械制造有限公司 | Hydraulic control system for electric-hydraulic proportional numerical control bending machine |
| CN106402061A (en) * | 2016-11-21 | 2017-02-15 | 江苏华威机械制造有限公司 | Hydraulic circuit for independent oil supplement during idle rapid-descending of hydraulic raid-forging machine |
| CN108252967A (en) * | 2017-12-19 | 2018-07-06 | 天水锻压机床(集团)有限公司 | A kind of Hydraulic system and control method for being used to control energy-saving pump |
-
2005
- 2005-04-21 CN CN 200520070940 patent/CN2839684Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518613A (en) * | 2011-12-03 | 2012-06-27 | 南京埃尔法电液技术有限公司 | Bender hydraulic system |
| CN102691681A (en) * | 2012-06-26 | 2012-09-26 | 重庆键英液压机电有限公司 | Novel three-point type bending machine hydraulic system with quick energy conservation |
| CN102691681B (en) * | 2012-06-26 | 2015-03-25 | 重庆键英液压机电有限公司 | Three-point type bending machine hydraulic system with quick energy conservation |
| CN103032412A (en) * | 2012-12-24 | 2013-04-10 | 南京埃尔法电液技术有限公司 | Hydraulic control system with safety protection function for hydraulic machine tool |
| CN103032412B (en) * | 2012-12-24 | 2015-12-16 | 南京埃斯顿自动化股份有限公司 | The hydraulic control system of hydraulic machine band safety protection |
| CN103334971A (en) * | 2013-07-22 | 2013-10-02 | 邹城市博威液压机械制造有限公司 | Hydraulic control system for electric-hydraulic proportional numerical control bending machine |
| CN106402061A (en) * | 2016-11-21 | 2017-02-15 | 江苏华威机械制造有限公司 | Hydraulic circuit for independent oil supplement during idle rapid-descending of hydraulic raid-forging machine |
| CN106402061B (en) * | 2016-11-21 | 2018-01-30 | 江苏华威机械制造有限公司 | The hydraulic circuit of independent repairing drops in hydraulic rapid forging press idle running soon |
| CN108252967A (en) * | 2017-12-19 | 2018-07-06 | 天水锻压机床(集团)有限公司 | A kind of Hydraulic system and control method for being used to control energy-saving pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2839684Y (en) | Bending machine hydraulic system | |
| CN205101299U (en) | Numerical control hydraulic pressure sheet material tubulation make -up machine hydraulic system | |
| CN106759621B (en) | Load-sensitive formula loading machine determines variable delivery hydraulic system | |
| CN101560999B (en) | Large-flow quick throttle proportional valve | |
| CN201180705Y (en) | High-pressure high-volume hydraulic loop device | |
| CN102720710A (en) | Hydraulic system, control method of hydraulic system, and engineering machine | |
| CN103089729B (en) | Quantitative system load-sensitive multiple directional control valve | |
| CN104047931A (en) | Three-way pressure compensator assembly | |
| CN102734241A (en) | Opened and closed hydraulic system and engineering machinery | |
| CN201110284Y (en) | Hydraulic control valve set for bending machine | |
| CN202360494U (en) | Bending machine hydraulic system | |
| CN205089714U (en) | Pneumatic cylinder oil piping system of numerical control hydraulic pressure sheet material tubulation make -up machine | |
| CN106812752B (en) | Multiple directional control valve | |
| CN102518613A (en) | Bender hydraulic system | |
| CN101893007B (en) | Plunger case lifting hydraulic control system | |
| CN204175686U (en) | A kind of bender hydraulic system | |
| CN107725504B (en) | Hydraulic system capable of providing proper performance for load and hydraulic control method | |
| CN203189371U (en) | Multi-functional three-way flow control valve used for concrete pump truck | |
| CN106762903B (en) | Multiple directional control valve | |
| CN103256334B (en) | Double-act-ing hydraulic J-Horner tractor suspension hydraulic system based on electromagnetic digital valve | |
| CN203394737U (en) | Concrete delivery pump integrated valve block with high-and-low voltage switching function | |
| CN204704187U (en) | Overload unloading valve | |
| CN102285143A (en) | Variable displacement piston pump system for hydraulic machine | |
| CN204436958U (en) | A kind of three-dimensional loads hydraulic pressure installation | |
| CN102661296A (en) | Hydraulic system and engineering machinery vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150421 Granted publication date: 20061122 |