CN105257970A - Pressure regulating valve - Google Patents
Pressure regulating valve Download PDFInfo
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- CN105257970A CN105257970A CN201510596689.3A CN201510596689A CN105257970A CN 105257970 A CN105257970 A CN 105257970A CN 201510596689 A CN201510596689 A CN 201510596689A CN 105257970 A CN105257970 A CN 105257970A
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- pressure
- regulator valve
- pressure regulator
- valve
- oil
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Abstract
A pressure regulating valve comprises a variable-speed control main pressure connector cavity M, a torque converter inlet pressure connector cavity C, a lubrication pressure connector cavity L and an overflow pressure connector cavity D. The variable-speed control main pressure connector cavity M is communicated with the oil inlet end of a first pressure regulating valve body and the oil inlet end of an overflow valve. The torque converter inlet pressure connector cavity C is communicated with the oil inlet end of a second pressure regulating valve body and the oil outlet end of the first pressure regulating valve body. The lubrication pressure connector cavity L is communicated with the oil inlet end of a third pressure regulating valve body and the oil outlet end of the second pressure regulating valve body. The overflow pressure connector cavity D is communicated with the overflow end of the overflow valve arranged at the valve element portion of the first pressure regulating valve body. The pressure regulating valve has the advantages that the four pressure regulating (safety) valve bodies are integrated on the same valve block and can be connected with other elements of a gearbox through cooperation of a bottom hole of an inner oil duct and an oil delivery plate; pressure regulating springs are distributed in the pressure regulating valve bodies, so the pressure of all main hydraulic elements and the pressure of other oil lines are accurately regulated; through the ingenious arrangement and the ingenious installation structure of four pressure reducing valves, oil is not prone to leaking.
Description
Technical field
The present invention is specially adapted in construction machinery gear box hydraulic system, the pressure regulator valve that can regulate the pressure of main hydraulic each in hydraulic system.
Background technique
In construction machinery gear box hydraulic system, for each main hydraulic, as speed change operating valve, torque-converters, radiator etc. all need setting different pressures operating range.In order to ensure the work of each main hydraulic normal table, pressure regulates and adopts independent reduction valve control mode respectively everywhere, and so also cause topology layout relative difficulty, exterior line connection is many and complicated.Subelement simultaneously needs to be built in transmission internal, maintenance and inspection inconvenience.
Summary of the invention
Object of the present invention is just to provide one and is integrated on same valve block by four pressure regulation (safety) valves, and is connected with other elements of fit form and gearbox of oil transportation plate by the base apertures of built-in oil duct.Internal placement pressure adjusting spring in pressure regulator valve valve body, accurately can set up the pressure of each main hydraulic and the pressure of other oil circuits.Layout and mounting structure cleverly between four reduction valve, function is more practical, integrated structure volume compact, and fluid not easily leaks; The structure of spool and mounting spring improves the stability of pressure regulator valve effectively, more reliable and practical pressure regulator valve.
Solution of the present invention is such:
A kind of pressure regulator valve, comprise gear change principal pressure hub cavity M, torque-converters inlet pressure hub cavity C, lubrication pressure hub cavity L and oil pressure relief hub cavity D, described principal pressure hub cavity M is communicated with the oil inlet end of the first pressure regulator valve oil inlet end and relief valve, described torque-converters inlet pressure hub cavity C is communicated with the oil outlet end of the second pressure regulator valve oil inlet end and the first pressure regulator valve, described lubrication pressure hub cavity L is communicated with the oil outlet end of the 3rd pressure regulator valve oil inlet end and the second pressure regulator valve, and described oil pressure relief hub cavity D is communicated with the relief valve effluent head being arranged at the first pressure regulator valve spool position.
Technological scheme also comprises more specifically: described first pressure regulator valve, the second pressure regulator valve, the 3rd pressure regulator valve are arranged in parallel.
Further: the pressure regulating cavity of described first pressure regulator valve, the second pressure regulator valve, the 3rd pressure regulator valve installation pressure adjusting spring is all in the upper end of valve body.
Further: described gear change principal pressure hub cavity M interface, torque-converters inlet pressure hub cavity C interface, lubrication pressure hub cavity L interface are positioned at the same side of valve body.
Further: described gear change principal pressure hub cavity M interface, torque-converters inlet pressure hub cavity C interface, lubrication pressure hub cavity L interface are positioned at the same side crossing with the first pressure regulator valve, the second pressure regulator valve, the 3rd pressure regulator valve spool.
Further: described valve body upper end adopts movable connection structure to be fixed with pressing plate, described pressing plate bottom surface be installed on described first pressure regulator valve, the second pressure regulator valve, the 3rd pressure regulator valve pressure adjusting spring top connect.
Further: described valve body installs the first pressure regulator valve, the valve opening of the second pressure regulator valve the 3rd pressure regulator valve is the through hole be communicated with up and down, carried out sealing fixed by upper and lower pressing plate and the seal ring of being separately installed with.
Further: the valve body of described relief valve is the spool of the first modulating valve, the one-way valve being provided with steel ball and Compress Spring composition at the endoporus of spool pressure regulating cavity one end carrys out the oil pressure relief of controlling water kick pressure interface chamber D.
Further: described oil pressure relief hub cavity D is communicated with the pressure regulating cavity of the first pressure regulator valve, the second pressure regulator valve, the 3rd pressure regulator valve simultaneously.
Further: have through hole in the corresponding each entrance location of body base, when adopting the pattern of transition oil transportation plate, be connected to the hydraulic system of gearbox everywhere, outside is also connected other elements by external lug with pipeline mode simultaneously.
Advantage of the present invention is integrated on same valve block by four pressure regulation (safety) valves, and be connected with other elements of fit form and gearbox of oil transportation plate by the base apertures of built-in oil duct.Internal placement pressure adjusting spring in pressure regulator valve valve body, accurately can set up the pressure of each main hydraulic and the pressure of other oil circuits.Layout and mounting structure cleverly between four reduction valve, function is more practical, integrated structure volume compact, and fluid not easily leaks; The structure of spool and mounting spring improves the stability of pressure regulator valve effectively, more reliable and practical.
Accompanying drawing explanation
Fig. 1 is pressure regulator valve front view of the present invention.
Fig. 2 is pressure regulator valve rear view of the present invention.
Fig. 3 is the structure sectional view of pressure regulator valve of the present invention.
Fig. 4 is the structure sectional view of the first pressure regulator valve 2.
Fig. 5 is the hydraulic schematic of the embodiment of the present invention.
In figure, reference character is:.
Embodiment
As shown in Figure 1, 2, the present embodiment comprises gear change principal pressure hub cavity M, torque-converters inlet pressure hub cavity C, lubrication pressure hub cavity L and oil pressure relief hub cavity D, and gear change principal pressure hub cavity M interface, torque-converters inlet pressure hub cavity C interface, lubrication pressure hub cavity L interface are positioned at the same side of valve body 1; Described principal pressure hub cavity M is communicated with the oil inlet end of the first pressure regulator valve 2 oil inlet end and relief valve, described torque-converters inlet pressure hub cavity C is communicated with the oil outlet end of the second pressure regulator valve 3 oil inlet end and the first pressure regulator valve 2, described lubrication pressure hub cavity L is communicated with the oil outlet end of the 3rd pressure regulator valve 4 oil inlet end and the second pressure regulator valve 3, and described oil pressure relief hub cavity D is communicated with the relief valve effluent head being arranged at the first pressure regulator valve 2 spool position.
As shown in Figure 3, described first pressure regulator valve 2, second pressure regulator valve 3, the 3rd pressure regulator valve 4 are arranged in parallel; The pressure regulating cavity that pressure adjusting spring installed by first pressure regulator valve 2, second pressure regulator valve 3, the 3rd pressure regulator valve 4 is all in the upper end of valve body; Gear change principal pressure hub cavity M interface, torque-converters inlet pressure hub cavity C interface, lubrication pressure hub cavity L interface are positioned at the same side crossing with the first pressure regulator valve 2, second pressure regulator valve 3, the 3rd pressure regulator valve 4 spool.
The valve opening that valve body 1 installs the first pressure regulator valve 2, second pressure regulator valve 3 the 3rd pressure regulator valve 4 is the through hole be communicated with up and down, is carried out sealing fixed by upper and lower pressing plate 3 and the seal ring of being separately installed with; Valve body upper end adopts movable connection structure to be fixed with pressing plate 15, described pressing plate 15 bottom surface be installed on described first pressure regulator valve 2, second pressure regulator valve 3, the pressure adjusting spring top of the 3rd pressure regulator valve 4 connects.
As shown in Figure 4, the valve body of described relief valve is the spool 21 of the first modulating valve 2, is provided with at spool 21 pressure regulating cavity one end endoporus the oil pressure relief that one-way valve that steel ball 22 and Compress Spring 23 and pin 24 form carrys out controlling water kick pressure interface chamber D.
As shown in Figure 5, the working principle of this system is as follows for a hydraulic system of the present embodiment:
The work fluid of gear box hydraulic system is after variable speed pump and oil filter, pressure regulator valve is entered by external pipeline, first the gear change principal pressure hub cavity M of valve body 1 is entered, promote the first pressure regulator valve 2 and spring seat 12 moves up, first spring 10 and the second spring 11 compress, gear change principal pressure hub cavity M pressure rises gradually, and when spring-compressed is to preseting length, the pressure of gear change principal pressure hub cavity M reaches setting value P
m.From principal pressure M mouth out fluid enter shift control system by a P mouth part, provide the principal pressure of gear change and flow and solenoidoperated cluthes combine or throw off, thus realize gear switch.Fluid another part enters the torque-converters inlet pressure hub cavity C of valve body 1, promote the second pressure regulator valve 3 to move up, 3rd spring 9 is compressed, the pressure of torque-converters inlet pressure hub cavity C rises gradually, when spring-compressed is to preseting length, the pressure of torque-converters inlet pressure hub cavity C reaches setting value P
c.After the pressure regulation of torque-converters inlet pressure hub cavity C fluid, enter torque-converters inside, ensure that the inlet pressure of torque-converters is no more than its normal operating pressure limit value.After torque converter circulation, fluid enters the lubrication pressure hub cavity L of valve body 1 after radiator etc., promote the 3rd spool 4 to move up, 4th spring 7 is compressed, the pressure of torque-converters inlet pressure hub cavity C rises gradually, when spring-compressed is to preseting length, the pressure of torque-converters inlet pressure hub cavity C reaches setting value P
c.Ensure fluid certain lubrication pressure, through bottom L mouth and then enter transmission internal and lubricate each component.
Safe and reliable for ensureing pressure regulator valve, oil pressure relief hub cavity D arranges certain pressure, occur as blocking at valve, valve, during the situations such as spring clamping stagnation, pressure regulating cavity internal pressure value exceeds setting value, the inner steel ball 22 of first pressure regulator valve 2 upwards backs down, 5th spring 23 compresses, valve body inner fluid overflow pressure relief, ensures valve Security.Through above pressure regulation process, in the hydraulic system of the adjustable gearbox of this pressure regulator valve, each hydraulic element work in normally-pressured neighbor.By design described compression the 4th spring 7, the 3rd spring 9, first spring 10, second spring 11, the 5th spring 23 characteristic to control pressure regulation pressure.In addition, safety valve is equipped with pad 5 on spring and valve element position, and by suitably increasing or reduce the adjustment among a small circle that pad quantity realizes pilot pressure, applicable pressure regulates among a small circle and adjusts after loss appears in system pressure.Valve body 2 plays sealing and fastening respectively by plug screw 6, O shape circle 8, pressing plate 15, bolt 13 and packing ring 14.
On L, M, C mouth, pressure measuring tie-in can be installed as required, detect the Stress control of pressure regulator valve.
As shown in Figure 2, through hole is had, as P hole, L hole, when can adopt the pattern of transition oil transportation plate as required in the corresponding each entrance location of body base, be connected to the hydraulic system of gearbox everywhere, outside is also connected other elements by external lug with pipeline mode simultaneously.
Claims (10)
1. a pressure regulator valve, comprise gear change principal pressure hub cavity M, torque-converters inlet pressure hub cavity C, lubrication pressure hub cavity L and oil pressure relief hub cavity D, it is characterized in that: described principal pressure hub cavity M is communicated with the oil inlet end of the first pressure regulator valve (2) oil inlet end and relief valve, described torque-converters inlet pressure hub cavity C is communicated with the oil outlet end of the second pressure regulator valve (3) oil inlet end and the first pressure regulator valve (2), described lubrication pressure hub cavity L is communicated with the oil outlet end of the 3rd pressure regulator valve (4) oil inlet end and the second pressure regulator valve (3), described oil pressure relief hub cavity D is communicated with the relief valve effluent head being arranged at the first pressure regulator valve (2) spool position.
2. pressure regulator valve according to claim 1, is characterized in that: described first pressure regulator valve (2), the second pressure regulator valve (3), the 3rd pressure regulator valve (4) are for arranged in parallel.
3. pressure regulator valve according to claim 1 and 2, is characterized in that: the pressure regulating cavity of described first pressure regulator valve (2), the second pressure regulator valve (3), the 3rd pressure regulator valve (4) installation pressure adjusting spring is all in the upper end of valve body.
4. pressure regulator valve according to claim 1, is characterized in that: described gear change principal pressure hub cavity M interface, torque-converters inlet pressure hub cavity C interface, lubrication pressure hub cavity L interface are positioned at the same side of valve body.
5. pressure regulator valve according to claim 4, is characterized in that: described gear change principal pressure hub cavity M interface, torque-converters inlet pressure hub cavity C interface, lubrication pressure hub cavity L interface are positioned at the same side crossing with the first pressure regulator valve (2), the second pressure regulator valve (3), the 3rd pressure regulator valve (4) spool.
6. pressure regulator valve according to claim 3, it is characterized in that: described valve body upper end adopts movable connection structure to be fixed with pressing plate (15), described pressing plate (15) bottom surface be installed on described first pressure regulator valve (2), the second pressure regulator valve (3), the 3rd pressure regulator valve (4) pressure adjusting spring top connect.
7. pressure regulator valve according to claim 3, it is characterized in that: described valve body installs the first pressure regulator valve (2), the valve opening of the second pressure regulator valve (3) the 3rd pressure regulator valve (4) is the through hole be communicated with up and down, carried out sealing fixed by upper and lower pressing plate (15) and the seal ring (8) of being separately installed with.
8. pressure regulator valve according to claim 1, it is characterized in that: the valve body of described relief valve is the spool (21) of the first modulating valve (2), at the endoporus of spool (21) pressure regulating cavity one end, the oil pressure relief that one-way valve that steel ball (22) and Compress Spring (23) and pin (24) form carrys out controlling water kick pressure interface chamber D is installed.
9. pressure regulator valve according to claim 8, is characterized in that: described oil pressure relief hub cavity D is communicated with the pressure regulating cavity of the first pressure regulator valve (2), the second pressure regulator valve (3), the 3rd pressure regulator valve (4) simultaneously.
10. pressure regulator valve according to claim 1, it is characterized in that: have through hole in the corresponding each entrance location of body base, when adopting the pattern of transition oil transportation plate, be connected to the hydraulic system of gearbox everywhere, outside is also connected other elements by external lug with pipeline mode simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510596689.3A CN105257970B (en) | 2015-09-18 | 2015-09-18 | Pressure regulator valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510596689.3A CN105257970B (en) | 2015-09-18 | 2015-09-18 | Pressure regulator valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105257970A true CN105257970A (en) | 2016-01-20 |
| CN105257970B CN105257970B (en) | 2018-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510596689.3A Active CN105257970B (en) | 2015-09-18 | 2015-09-18 | Pressure regulator valve |
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| Country | Link |
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| CN (1) | CN105257970B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542716A (en) * | 2016-06-23 | 2018-01-05 | 镇江液压股份有限公司 | A kind of pressure-gradient control valve with safety valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2950904A1 (en) * | 1979-12-18 | 1981-06-25 | Graubremse Gmbh, 6900 Heidelberg | MULTI-CIRCUIT VALVE TO BE USED IN MOTOR VEHICLES |
| CN201339595Y (en) * | 2009-01-19 | 2009-11-04 | 无锡杰尔压缩机有限公司 | Combination valve for oil supply system of high-speed centrifugal blower |
| US20100213010A1 (en) * | 2008-12-23 | 2010-08-26 | Techspace Aero S.A. | Automatic Shut-Off Valve For The Oil Circuit In An Airplane Engine |
| CN102312997A (en) * | 2011-09-08 | 2012-01-11 | 浙江三花汽车零部件股份有限公司 | Vehicle gear box temperature regulator |
| CN202370928U (en) * | 2011-12-16 | 2012-08-08 | 第一拖拉机股份有限公司 | Low-pressure control and lubrication control valve block assembly for wheeled tractor |
| EP2503205A1 (en) * | 2011-03-22 | 2012-09-26 | Elastotec GmbH | Safety valve |
| CN203962955U (en) * | 2014-07-02 | 2014-11-26 | 仙居县欧德液压有限公司 | There is the pressure controlled valve of lubricating function |
-
2015
- 2015-09-18 CN CN201510596689.3A patent/CN105257970B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2950904A1 (en) * | 1979-12-18 | 1981-06-25 | Graubremse Gmbh, 6900 Heidelberg | MULTI-CIRCUIT VALVE TO BE USED IN MOTOR VEHICLES |
| US20100213010A1 (en) * | 2008-12-23 | 2010-08-26 | Techspace Aero S.A. | Automatic Shut-Off Valve For The Oil Circuit In An Airplane Engine |
| CN201339595Y (en) * | 2009-01-19 | 2009-11-04 | 无锡杰尔压缩机有限公司 | Combination valve for oil supply system of high-speed centrifugal blower |
| EP2503205A1 (en) * | 2011-03-22 | 2012-09-26 | Elastotec GmbH | Safety valve |
| CN102312997A (en) * | 2011-09-08 | 2012-01-11 | 浙江三花汽车零部件股份有限公司 | Vehicle gear box temperature regulator |
| CN202370928U (en) * | 2011-12-16 | 2012-08-08 | 第一拖拉机股份有限公司 | Low-pressure control and lubrication control valve block assembly for wheeled tractor |
| CN203962955U (en) * | 2014-07-02 | 2014-11-26 | 仙居县欧德液压有限公司 | There is the pressure controlled valve of lubricating function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542716A (en) * | 2016-06-23 | 2018-01-05 | 镇江液压股份有限公司 | A kind of pressure-gradient control valve with safety valve |
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| CN105257970B (en) | 2018-06-26 |
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