CN201250817Y - Pilot control change-over valve group - Google Patents
Pilot control change-over valve group Download PDFInfo
- Publication number
- CN201250817Y CN201250817Y CN 200820152223 CN200820152223U CN201250817Y CN 201250817 Y CN201250817 Y CN 201250817Y CN 200820152223 CN200820152223 CN 200820152223 CN 200820152223 U CN200820152223 U CN 200820152223U CN 201250817 Y CN201250817 Y CN 201250817Y
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- valve
- oil
- over valve
- hydraulicchange
- guide
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- Expired - Fee Related
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- Multiple-Way Valves (AREA)
Abstract
The utility model discloses a pilot control change-over valve group, which comprises a hydraulic change-over valve and a valve block installed under the hydraulic change-over valve. The pilot control change-over valve group is characterized in that a change-over valve for pilot control is also installed on the hydraulic change-over valve, and an overflow valve is also installed on the valve block. An oil inlet (P), an oil return port (T), control oil inlets (X) and (Y), working ports (A) and (B), and a pressure testing port (M) which are communicated with a valve block internal oil way are arranged on the surface of the valve block, two oil ports (A) and (B) of a hydraulic cylinder in a hydraulic system are realized, under the original state that the device does not have a control signal, the (A) oil port is communicated with pressure oil, the (B) oil port keeps adjustable pressure, after the control signal is sent, the (A) oil port is separated from the pressure oil, the (B) oil port is communicated with the pressure oil, and the pilot control change-over valve group has the advantages that the volume is small, the structure is compact, the whole quality is improved, the cost is lowered, the reliability and the stability are greatly intensified, and the like.
Description
Technical field:
The utility model relates to the hydraulic control system technical field, is exactly that a kind of guide controls the selector valve group specifically.
Background technique:
At present, the selector valve that adopts in the hydraulic system has manual and hydraulic control two kinds.Hand-operated direction valve and pilot operated directional control valve all are provided with valve body and valve rod relative position, open and close oil inlet and outlet, reach the purpose of commutation.Hand-operated direction valve is the handle that the promotion displacement of valve rod is set at an end of valve rod, and pilot operated directional control valve is at the selector valve two ends hydraulic control mouth to be set, and promotes displacement of valve rod by hydraulic oil, opens and closes filler opening, reaches the purpose of commutation.Existing selector valve for both requirements can manual reverse of direction also can liquid controlled reversing hydraulic control system, be inefficient.
In the hydraulic system of some machinery (for example engineering machinery), two hydraulic fluid port A of oil hydraulic cylinder and B require to insert various flows to the hydraulic oil of pressure.Do not have the reset condition of control command at equipment, require the A hydraulic fluid port to communicate with pressure oil, the B hydraulic fluid port keeps the pressure that can regulate.After sending control command, require A hydraulic fluid port and pressure oil to cut off, the B hydraulic fluid port communicates with pressure oil.Hydraulic system will realize such function, and traditional method is to combine with two selector valves and relief valve, and loosely organized, volume is bigger, the cost height.
The model utility content:
For solving the deficiencies in the prior art, the utility model provides a kind of compact structure, the volume guide that can regulate return oil pressure little, easy to use to control the selector valve group.
In order to achieve the above object, technical solutions of the utility model are as follows:
The guide controls the selector valve group, comprises hydraulicchange-over valve and the valve piece that is installed under the hydraulicchange-over valve; It is characterized in that, the guide also is installed on the described hydraulicchange-over valve to be controlled and uses selector valve, relief valve also is installed on the valve piece, hydraulicchange-over valve is provided with left side control chamber a and right control chamber b, and be provided with four hydraulic fluid port P1, A1, B1, T1, constitute location right path and left position path through four hydraulic fluid ports, the location right path is P1-A1 and B1-T1; The left position path is P1-B1, and A1 and T1 are obstructed.
It is solenoid directional control valve that described guide controls with selector valve, and this guide's control is provided with four hydraulic fluid port A2, B2, T2, P2 with selector valve, constitutes location right path and left position path through four hydraulic fluid ports, and the location right path is P2-A2 and B2-T2; The left position path is P2-B2 and A2-T2.Be provided with in the described hydraulicchange-over valve and be communicated with left side control chamber a and guide and control left control oil channel, also be provided with in the described hydraulicchange-over valve and be communicated with the right control oil channel that right control chamber b and guide control another hydraulic fluid port A2 that uses selector valve with selector valve one hydraulic fluid port B2.
Described relief valve is the plug-in type relief valve, and is positioned on the same axis with oil return inlet T; This plug-in type relief valve is provided with oil inlet P 3 and oil return inlet T 3, and is placed on the interface on the oil return inlet T by the mode of pegging graft; The back pressure oil circuit that is communicated with between a hydraulic fluid port T1 who also is provided with hydraulicchange-over valve in the described valve piece and the return opening P3 of plug-in type relief valve.
The guide controls and can also be set to hand-operated direction valve with selector valve and be installed on the hydraulicchange-over valve.
Also be provided with oil inlet P, oil return inlet T, control oil filler opening X and Y, working hole A and B and the pressure tap M that is communicated with valve piece internal oil passages on valve piece surface; Oil inlet P is communicated with by in-line with the P1 mouth of hydraulicchange-over valve; Working hole A is communicated with by working oil path with the A1 mouth of hydraulicchange-over valve; Making a mouthful B is communicated with by working oil path with the B1 mouth of hydraulicchange-over valve; Oil return inlet T is communicated with by oil circuit with the T3 mouth of plug-in type relief valve; Pressure tap M is communicated with by working oil path and pressure measurement oil circuit with working hole B; Controlling oily filler opening X is communicated with by controlling oily in-line with the P2 mouth that the guide controls with selector valve; Controlling oily return opening Y is communicated with by controlling oily oil circuit with the T2 mouth that the guide controls with selector valve.
Under the user mode, when the guide controls with selector valve no electric circuit (for the hand-operated direction valve handle in the home position), then guide's control remains on the location right path with selector valve, hydraulic oil is controlled chamber b by the right side that oil circuit enters hydraulicchange-over valve, promotes hydraulicchange-over valve and realizes the location right path.Simultaneously, the control oil of the left side of hydraulicchange-over valve control chamber a is got back to fuel tank by oil circuit; So just make the pressure oil of P mouth arrive the A mouth by oil circuit; The pressure oil of B mouth arrives the T mouth through plug-in type relief valve and oil circuit again by the P3 mouth of oil circuit arrival plug-in type relief valve; By regulating the plug-in type relief valve, can realize the back pressure of needs at the P3 place, the back pressure value is observed from the pressure gauge of pressure tap M.
Guide control is with selector valve energising (for the hand-operated direction valve handle at commutation position), and then guide's control commutates to the on the left side position with selector valve, and hydraulic oil enters the left side control chamber a of hydraulicchange-over valve through oil circuit, promotes hydraulicchange-over valve and realizes left position path.Simultaneously, the control oil of the right side of hydraulicchange-over valve control chamber b is got back to fuel tank by oil circuit.So just make the pressure oil of P mouth arrive the B mouth by oil circuit.
The utility model is compared the advantage that is had with background technique:
The utility model has adopted the guide to control with selector valve, hydraulicchange-over valve and plug-in type relief valve and has been contained on the valve piece, two the hydraulic fluid port A and the B of oil hydraulic cylinder in the hydraulic system have been realized, the reset condition of not having control command at equipment, the A hydraulic fluid port communicates with pressure oil, and the B hydraulic fluid port keeps the pressure that can regulate; After sending control command, A hydraulic fluid port and pressure oil cut off, and the B hydraulic fluid port communicates with pressure oil; The utlity model has that volume is little, compact structure, improved whole quality, reduced cost, strengthened reliability and stability greatly.
Description of drawings:
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Figure 1 shows that the utility model guide controls the hydraulic schematic diagram of selector valve group.
Figure 2 shows that the utility model guide controls the left view of selector valve group.
Figure 3 shows that the utility model guide controls the plan view of selector valve group.
Figure 4 shows that the utility model guide controls the right elevation of selector valve group.
Embodiment:
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to figs. 1 to Fig. 4, the guide controls the selector valve group, comprises that the guide that valve piece 4 is equipped with hydraulicchange-over valve 2 and plug-in type relief valve 3 and is installed in hydraulicchange-over valve 2 controls with selector valve 1.The hydraulicchange-over valve of installing on valve piece 42 is made up of location right path and left position path, and the location right path is P1-A1 and B1-T1; The left position path is P1-B1, and A1 and T1 are obstructed; The guide is installed on hydraulicchange-over valve 2 controls with selector valve 1, this guide controls with selector valve 1 and comprises location right path and left position path, and the location right path is P2-A2 and B2-T2; The left position path is P2-B2 and A2-T2.Various oil circuits are made by the running casting method in inside at valve piece 4, and valve piece 4 internal oil passages are connected with oil inlet P, oil return inlet T, control oil filler opening X and Y, the working hole A on the surface of valve piece 4 and B and pressure tap M respectively.
As shown in Figure 2, be provided with control oily filler opening X and Y in the left side of valve piece 4 casting way, with the oil return inlet T that is connected fuel tank and be installed in plug-in type relief valve 3 on the valve piece 4; Wherein, control oily filler opening X and Y and be positioned on the same horizontal line, oil return inlet T and plug-in type relief valve 3 are positioned on the same vertical axis; This plug-in type relief valve 3 is placed on the interface on the oil return inlet T by the mode of pegging graft, it makes filler opening with P3, T3 makes return opening, and the P3 mouth is to be connected with the T1 mouth of hydraulicchange-over valve 2 by back pressure oil circuits 14 in the valve piece 4, between T3 mouth and the oil return inlet T is to be communicated with whole loop by valve piece 4 interior oil circuits 15; Be interconnected by the oil of the control in the valve piece 4 in-line 21 and control the P2 mouth that oily filler opening X and guide control with selector valve 1, control oily return opening Y and guide and control and be provided with the oily oil circuit 24 of control between the T2 mouth with selector valve 1 again, be communicated with whole loop by controlling oily oil circuit 24.
As shown in Figure 4, using the same method in the right side of valve piece 4 profit is provided with the oil inlet P of the pressure oil that oil hydraulic pump comes, and this oil inlet P is to be connected with the P1 mouth of hydraulicchange-over valve 2 by the in-lines 11 in the valve piece 4; Hydraulic fluid port less than oil inlet P also is set on the same horizontal line of oil inlet P, has pressure tap M at two hydraulic fluid ports, this pressure tap M is equipped with pressure-measuring meter, and is communicated with by working oil path 13 and pressure measurement oil circuit 16 with working hole B, is used for testing the back pressure value at P3 place.
Be provided with working hole A and the B that connects oil cylinder on the opposite side of valve piece 4 with quadrat method, two hydraulic fluid ports also are in together on the horizontal line, and this working hole A is communicated with by working oil path 12 in the valve piece 4 with the A1 mouth of hydraulicchange-over valve 2; Working hole B is connected with the B1 mouth of hydraulicchange-over valve 2 by working oil path 13 in the valve piece 4.
In addition, hydraulicchange-over valve 2 also is provided with left side control chamber a and right control chamber b (as Fig. 1), and wherein, the right side of hydraulicchange-over valve 2 control chamber b is communicated with the A2 mouth that the guide controls with selector valve 1 by right control oil channel 23; The guide controls with the B2 mouth of selector valve 1 and connects by the left side control chamber a of left control oil channel 22 with hydraulicchange-over valve 2.In order to improve practicability, it can be solenoid directional control valve that the guide controls with selector valve 1, also can be hand-operated direction valve.
Under the user mode, when the guide controls with selector valve 1 no electric circuit (for the hand-operated direction valve handle in the home position), then the guide controls with selector valve 1 and remains on the path that the location right path is P2-A2 and B2-T2, from controlling hydraulic oil that oily filler opening X comes in through controlling the right side control chamber b that oily in-line 21 and right control oil channel 23 enter hydraulicchange-over valve 2, thereby promote the path that hydraulicchange-over valve 2 is realized right position P1-A1 and B1-T1.Simultaneously, the control oil oil return of the left side of hydraulicchange-over valve 2 control chamber a is got back to fuel tank by left control oil channel 22 and the oily oil circuit 24 of control.And then make the pressure oil of P mouth arrive working hole A mouth by in-line 11 and working oil path 12; The pressure oil of working hole B mouth arrives the T mouths through plug-in type relief valve 3 and oil circuit 15 again by the P3 mouth of working oil path 13 and back pressure oil circuit 14 arrival plug-in type relief valves 3.By regulating plug-in type relief valve 3, can realize the back pressure of needs at the P3 place, the back pressure value is observed from the pressure gauge of pressure tap M.
When the guide controls with selector valve 1 energising (for the hand-operated direction valve handle at commutation position), then the guide controls with selector valve 1 and commutates to the path of on the left side position P2-B2 and A2-T2, from controlling hydraulic oil that oily filler opening X comes in, promote hydraulicchange-over valve 2 and realize left position P1-B1 path through controlling the left side control chamber a that oily in-line 21 and left control oil channel 22 enter hydraulicchange-over valve 2.Simultaneously, the control oil oil return of the right side of hydraulicchange-over valve 2 control chamber b is got back to fuel tank by right control oil channel 23 and the oily oil circuit 24 of control; Thereby make the pressure oil of P mouth arrive the B mouth by in-line 11 and working oil path 13.
The utility model is controlled with selector valve 1, hydraulicchange-over valve 2 and plug-in type relief valve 3 by the guide and is contained on the valve piece 4, two the hydraulic fluid port A and the B of oil hydraulic cylinder in the hydraulic system have been realized, the reset condition of not having control command at equipment, the A hydraulic fluid port communicates with pressure oil, and the B hydraulic fluid port keeps the pressure that can regulate; After sending control command, A hydraulic fluid port and pressure oil cut off, and the B hydraulic fluid port communicates with pressure oil; The utility model also has that volume is little, compact structure, has improved whole quality, has reduced cost, strengthened advantages such as reliability and stability greatly.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. the guide controls the selector valve group, comprises hydraulicchange-over valve and the valve piece that is installed under the hydraulicchange-over valve; It is characterized in that, the guide also is installed on the described hydraulicchange-over valve controls and use selector valve, on the described valve piece relief valve is installed also.
2. guide according to claim 1 controls the selector valve group, it is characterized in that, described hydraulicchange-over valve is provided with left side control chamber (a) and right control chamber (b), and is provided with four hydraulic fluid ports (P1, A1, B1, T1).
3. guide according to claim 1 and 2 controls the selector valve group, it is characterized in that, it is solenoid directional control valve that described guide controls with selector valve, this guide's control is provided with four hydraulic fluid ports (A2, B2, T2, P2) with selector valve, be provided with connection left side control chamber (a) and guide in the described hydraulicchange-over valve and control the left control oil channel of using selector valve one hydraulic fluid port (B2), also be provided with the right control oil channel that connection right control chamber (b) and guide control another hydraulic fluid port (A2) of using selector valve in the described hydraulicchange-over valve.
4. guide according to claim 1 and 2 controls the selector valve group, it is characterized in that, described relief valve is the plug-in type relief valve, and is positioned on the same axis with oil return inlet T; This plug-in type relief valve is provided with filler opening (P3) and return opening (T3), the back pressure oil circuit that is communicated with between a hydraulic fluid port (T1) that also is provided with hydraulicchange-over valve in the described valve piece and the return opening (P3) of plug-in type relief valve.
5. guide according to claim 2 controls the selector valve group, it is characterized in that, described guide controls with selector valve can also be set to hand-operated direction valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820152223 CN201250817Y (en) | 2008-08-21 | 2008-08-21 | Pilot control change-over valve group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820152223 CN201250817Y (en) | 2008-08-21 | 2008-08-21 | Pilot control change-over valve group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201250817Y true CN201250817Y (en) | 2009-06-03 |
Family
ID=40746490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820152223 Expired - Fee Related CN201250817Y (en) | 2008-08-21 | 2008-08-21 | Pilot control change-over valve group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201250817Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506030A (en) * | 2011-09-26 | 2012-06-20 | 三一重型装备有限公司 | Multi-way valve and tunnel boring machine |
| CN102536938A (en) * | 2011-01-18 | 2012-07-04 | 梅张龙 | Liquid controlled multi-way valve |
| CN103032399A (en) * | 2012-12-25 | 2013-04-10 | 太重煤机有限公司 | Integrated valve bank for coal mining machine |
| CN104131779A (en) * | 2014-07-29 | 2014-11-05 | 中国石油集团渤海钻探工程有限公司 | Rotary guide tool annular oil exhaust device |
| CN110173474A (en) * | 2019-05-05 | 2019-08-27 | 天津海弗液压技术有限公司 | One kind cutting slotting vehicle hydraulic system monoblock type valve block |
| CN114207295A (en) * | 2021-11-15 | 2022-03-18 | 无锡市东舟船舶设备股份有限公司 | Hydraulic system |
-
2008
- 2008-08-21 CN CN 200820152223 patent/CN201250817Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536938A (en) * | 2011-01-18 | 2012-07-04 | 梅张龙 | Liquid controlled multi-way valve |
| CN102536938B (en) * | 2011-01-18 | 2015-01-07 | 梅张龙 | Liquid controlled multi-way valve |
| CN102506030A (en) * | 2011-09-26 | 2012-06-20 | 三一重型装备有限公司 | Multi-way valve and tunnel boring machine |
| CN102506030B (en) * | 2011-09-26 | 2014-11-19 | 三一重型装备有限公司 | Multi-way valve and tunnel boring machine |
| CN103032399A (en) * | 2012-12-25 | 2013-04-10 | 太重煤机有限公司 | Integrated valve bank for coal mining machine |
| CN103032399B (en) * | 2012-12-25 | 2015-04-08 | 太重煤机有限公司 | Integrated valve bank for coal mining machine |
| CN104131779A (en) * | 2014-07-29 | 2014-11-05 | 中国石油集团渤海钻探工程有限公司 | Rotary guide tool annular oil exhaust device |
| CN110173474A (en) * | 2019-05-05 | 2019-08-27 | 天津海弗液压技术有限公司 | One kind cutting slotting vehicle hydraulic system monoblock type valve block |
| CN114207295A (en) * | 2021-11-15 | 2022-03-18 | 无锡市东舟船舶设备股份有限公司 | Hydraulic system |
| WO2023082234A1 (en) * | 2021-11-15 | 2023-05-19 | 无锡市东舟船舶设备股份有限公司 | Hydraulic system |
| CN114207295B (en) * | 2021-11-15 | 2024-04-05 | 无锡市东舟船舶设备股份有限公司 | Hydraulic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20160821 |