CN103603833A - Constant pressure oil circuit control device - Google Patents
Constant pressure oil circuit control device Download PDFInfo
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- CN103603833A CN103603833A CN201310585057.8A CN201310585057A CN103603833A CN 103603833 A CN103603833 A CN 103603833A CN 201310585057 A CN201310585057 A CN 201310585057A CN 103603833 A CN103603833 A CN 103603833A
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- valve
- relief valve
- oil circuit
- overflow
- pressure
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Abstract
The invention discloses a constant pressure oil circuit control device. The pressure end of a first overflow valve (1) is in communication connection with the input end of a one-way valve (2), and an input end P is extended from the pressure end; the control end of the first overflow valve (1), the pressure end of a second overflow valve (3), the control end of the second overflow valve (3) and the output end of the one-way valve (2) are in parallel communicated connection with an interface of an energy accumulator, and an output end P1 is extended from the ends; the overflow end of the first overflow valve (1) and the overflow end of the second overflow valve (3) are in communicated connection, and a return oil end T is extended from the overflow ends. The constant pressure oil circuit control device has the advantages that the operating environment of a distribution valve hydraulic system constant-pressure pump set is improved effectively, reliability of the set is enhanced, the service life of the set is prolonged, the set is easy to maintain, the cost is reduced, and reliability and stability of a concrete pump distribution valve hydraulic system is further improved.
Description
Technical field
The present invention relates to distributing valve for concrete pump hydraulic system, relate in particular to a kind of constant voltage oil circuit control device for distributing valve hydraulic system.
Background technique
Distributing valve hydraulic system works to drive its distributing valve oil cylinder in concrete pump.The constant voltage oil circuit control device of known distributing valve hydraulic system, is controlled to wait upon by the constant voltage of constant pressure pump and takes stroking mechanism, one-way valve, accumulator and oil circuit relief valve and form.The defect of this constant voltage oil circuit control device is, because the constant voltage of constant pressure pump is controlled and is waitd upon that to take stroking mechanism frequency of okperation large, often cause constant pressure pump rate of fault high, directly have influence on functional reliability and the working life of distribution valve of concrete pump hydraulic system, also increased manufacture and maintenance cost.
Summary of the invention
The technical problem to be solved in the present invention is that the defect existing for prior art, provides a kind of improved constant voltage oil circuit control device for distributing valve hydraulic system.The constant voltage of using this device can effectively reduce constant pressure pump is controlled and is waitd upon the frequency of okperation that takes stroking mechanism, improves functional reliability and the working life of oil pump.And this device is easier to maintenance and maintenance, thereby can effectively improve functional reliability and the stability in use of distribution valve of concrete pump hydraulic system, reduce costs.
Technological scheme of the present invention is that, referring to accompanying drawing 1, a kind of constant voltage oil circuit control device providing as shown in Figure 1, is in series with the first relief valve 1, one-way valve 2, the second relief valve 3, accumulator 4 on the connection oil circuit of this device; The input end of the pressure end of wherein said the first relief valve 1 and described one-way valve 2 connects and is connected and amplifies out input end P; The output terminal of the control end of the pressure end of the control end of this first relief valve 1, the second relief valve 3, the second relief valve 3, one-way valve 2 connects the interface of described accumulator 4 in parallel and amplifies out output terminal P1; And the effluent head of described the first relief valve 1 is connected with the effluent head perforation of the second relief valve 3 and amplify out oil revolving end T.When the constant voltage oil circuit control device forming is thus used, by its input end P, connect and connect the constant pressure pump device of benefiting from distributing valve hydraulic system; By its output terminal P1, connect and connect hydraulicdirectional control valve and the distributing valve cylinder apparatus of benefiting from distributing valve hydraulic system; The oil return of benefiting from distributing valve hydraulic system by its oil revolving end T perforation connection is to fuel tank.
Working principle of the present invention is that referring to Fig. 1, the first relief valve 1 is set oil circuit constant voltage pilot pressure, the safe oil pressure relief of the second relief valve 3 setting oil circuit; When the hydraulic fluid pressure of output terminal P1 is less than the oil circuit constant voltage pilot pressure that the first relief valve 1 sets, this device is in pressurising state, and hydraulic oil enters from input end P, through one-way valve 2 to accumulator 4 energy storage; When output terminal P1 hydraulic fluid pressure equals the oil circuit constant voltage pilot pressure of the first relief valve 1 setting, the control oil of the first relief valve 1 is opened the first relief valve 1, device is in unloading condition, and hydraulic oil enters from input end P, by the first relief valve 1, from oil revolving end T, flows back to fuel tank; During the work of distributing valve device, pressure oil, from output terminal P1 output, drives distributing valve oil cylinder through hydraulicdirectional control valve; When output terminal P1 hydraulic fluid pressure is greater than the oil pressure relief of the second relief valve 3 settings, hydraulic oil is from the second relief valve 3 overflows and flow back to fuel tank through oil revolving end T.
The invention has the beneficial effects as follows, this device has improved the working environment of distributing valve hydraulic system constant pressure pump device effectively, its functional reliability is effectively strengthened, effectively improve working life, and be easy to maintaining, thereby both reduced user cost, further improved again the reliability and stability of distribution valve of concrete pump hydraulic work system.
Accompanying drawing explanation
Fig. 1 is the structural representation of a specific embodiment of a kind of constant voltage oil circuit control of the present invention device, in figure, is denoted as:
1-the first relief valve,
2-one-way valve,
3-the second relief valve,
4-accumulator.
Embodiment
This embodiment of a kind of constant voltage oil circuit control of the present invention device as shown in Figure 1, has and is connected on the first relief valve 1, one-way valve 2, the second relief valve 3, the accumulator 4 connecting on oil circuit; Wherein the first relief valve 1 and the second relief valve 3 all adopt commercially available DB10 type relief valve.One-way valve 2 adopts commercially available S15 type one-way valve.Accumulator 4 adopts commercially available NXQ-10 type accumulator.Described the first relief valve 1, the second relief valve 3, one-way valve 2, accumulator 4 is by technique scheme with reference to connecting shown in accompanying drawing 1, and the pressure end of the first relief valve 1 is connected with the input end perforation of one-way valve 2 and amplifies out input end P; The output terminal of the control end of the pressure end of the control end of the first relief valve 1, the second relief valve 3, the second relief valve 3, one-way valve 2 connects the interface of accumulator 4 in parallel and amplifies out output terminal P1; The effluent head of the effluent head of the first relief valve 1 and the second relief valve 3 connects and is connected and amplifies out oil revolving end T.This routine constant voltage oil circuit control device forming is thus respond well through trial-production probationary certificate, reaches designing requirement completely.
Claims (1)
1. a constant voltage oil circuit control device, is characterized in that, is in series with the first relief valve (1), one-way valve (2), the second relief valve (3), accumulator (4) on the connection oil circuit of this device; The input end of the pressure end of wherein said the first relief valve (1) and described one-way valve (2) connects and is connected and amplifies out input end P; The output terminal of the control end of the pressure end of the control end of this first relief valve (1), the second relief valve (3), the second relief valve (3), one-way valve (2) connects the interface of described accumulator in parallel (4) and amplifies out output terminal P1; And the effluent head of described the first relief valve (1) is connected with the effluent head perforation of the second relief valve (3) and amplify out oil revolving end T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310585057.8A CN103603833A (en) | 2013-11-14 | 2013-11-14 | Constant pressure oil circuit control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310585057.8A CN103603833A (en) | 2013-11-14 | 2013-11-14 | Constant pressure oil circuit control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103603833A true CN103603833A (en) | 2014-02-26 |
Family
ID=50122081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310585057.8A Pending CN103603833A (en) | 2013-11-14 | 2013-11-14 | Constant pressure oil circuit control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103603833A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948524A (en) * | 2015-06-30 | 2015-09-30 | 中国船舶重工集团公司第七一九研究所 | Full-flow combined backpressure device with little pressure fluctuation |
| CN106989073A (en) * | 2017-04-28 | 2017-07-28 | 防城港市海河堤管理站 | Electrohydraulic controlling mechanism |
| CN107013506A (en) * | 2017-04-28 | 2017-08-04 | 防城港市海河堤管理站 | Punching mechanism |
-
2013
- 2013-11-14 CN CN201310585057.8A patent/CN103603833A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948524A (en) * | 2015-06-30 | 2015-09-30 | 中国船舶重工集团公司第七一九研究所 | Full-flow combined backpressure device with little pressure fluctuation |
| CN104948524B (en) * | 2015-06-30 | 2017-05-10 | 中国船舶重工集团公司第七一九研究所 | Full-flow combined backpressure device with little pressure fluctuation |
| CN106989073A (en) * | 2017-04-28 | 2017-07-28 | 防城港市海河堤管理站 | Electrohydraulic controlling mechanism |
| CN107013506A (en) * | 2017-04-28 | 2017-08-04 | 防城港市海河堤管理站 | Punching mechanism |
| CN106989073B (en) * | 2017-04-28 | 2019-08-23 | 陈悦雯 | Electrohydraulic controlling mechanism |
| CN107013506B (en) * | 2017-04-28 | 2019-08-23 | 陈悦雯 | Punching mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140226 |