CN103807240A - Priority system and priority device on pilot hydraulic control oil circuit - Google Patents
Priority system and priority device on pilot hydraulic control oil circuit Download PDFInfo
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- CN103807240A CN103807240A CN201210454473.XA CN201210454473A CN103807240A CN 103807240 A CN103807240 A CN 103807240A CN 201210454473 A CN201210454473 A CN 201210454473A CN 103807240 A CN103807240 A CN 103807240A
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- reduction valve
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Abstract
The invention discloses a priority system and a priority device on a pilot hydraulic control oil circuit. The priority system on the pilot hydraulic control oil circuit is characterized by comprising a main pump, a pilot control valve, a first reversing valve, a second reversing valve, a first pilot control valve and a second pilot control valve, wherein the priority device is arranged between the control end and outer control port P of the second reversing valve, and comprises a first pressure reducing valve and a second pressure reducing valve; the port A1, port A2 and port P of the first pressure reducing valve are connected with the port 3 of a first pilot valve, the port XAs of the second reversing valve and the port 1 of the first pilot control valve respectively; the port B1, port B2 and port P of the second pressure reducing valve are communicated with the port 4 of the first pilot valve, the port XBs of the second reversing valve and the port 1 of the first pilot control valve respectively; two pressure reducing valves are arranged in the priority device. The priority system has the advantages that when multiple actions are performed at the same time, the coordination of multiple actions is improved through the pilot priority device and the system thereof. Meanwhile, the machine efficiency can be increased.
Description
Technical field
The priority control system relating in a kind of hydraulic control device of the present invention, particularly relates to priority system and priority device on a kind of guide's hydraulic control oil circuit.
Background technique
For hydraulically powered equipment, conventionally be all to drive and control selector valve by pilot-actuated valve, realize the control of hydraulic work device action by the action of selector valve, in synchronization, operator tends to control multiple actions simultaneously, therefore requires machine to have good harmony.Hydraulic system is controlled in Hydraulic Excavator's Boom as shown in Figure 1 and revolution; the swing arm of for example hydraulic shovel and revolution often can be controlled simultaneously; will there is such problem; the load suffered because of swing arm is larger; hydraulic oil can the less revolution of more supply load; thereby cause digger revolving to arrive while unloading material level, swing arm promotes less than object height.
Summary of the invention
Object of the present invention is exactly can not the fine problem of simultaneously controlling multiple actions for existing guide's hydraulic control, and priority system and priority device on a kind of guide's hydraulic control oil circuit of the harmony that can improve many actions are provided.
Solution of the present invention is such:
Priority system on guide's hydraulic control oil circuit of the present invention comprises main pump, pilot-actuated valve, the first selector valve, the second selector valve, the first pilot-actuated valve, the second pilot-actuated valve, between the control end of described the second selector valve and outside control mouth P, be provided with priority device, described priority device includes the first reduction valve and the second reduction valve, and the A1 mouth of the first reduction valve, A2 mouth, P mouth are communicated with respectively 3 mouthfuls of the first pilot valve, the XAs mouth of the second selector valve, the first pilot-actuated valve 1 mouthful; The B1 mouth of the second reduction valve, B2 mouth, P mouth are communicated with respectively 4 mouthfuls of the first pilot valve, the XBs mouth of the second selector valve, the first pilot-actuated valve 1 mouthful.
Further: the drain tap of the first reduction valve and the second reduction valve is communicated with fuel tank.
Guide's hydraulic control system of the present invention, in the time operating two groups of pilot-actuated valves simultaneously and have action, the spool that the XAb chamber that arrives the first selector valve from 1 mouthful of outflow pressure oil of pilot-actuated valve promotes the first selector valve moves, enter the first reduction valve from the pressure oil of 3 mouthfuls of outflows of pilot-actuated valve through the A1 of priority device mouth simultaneously, because the outside control mouth P of the first reduction valve has pressure oil effect, be depressurized output from the pressure oil of the first reduction valve A2 mouth, the spool that the XAs chamber that arrives the second selector valve promotes the second selector valve moves, because guide's oil circuit pressure in XAs chamber reduces, spool amount of movement is inabundant, and guide's oil circuit pressure of XAb is not lowered, spool amount of movement maximum, the first selector valve opening area is large compared with the opening area of the second selector valve, uses preferential first selector valve of supplying with of hydraulic oil of main pump output.
The priority device of the priority system on guide's hydraulic control oil circuit of the present invention, priority device valve body includes the first reduction valve and the second reduction valve, the first described reduction valve is guiding valve, one end of its first relief pressure valve cartridge is connected with one end of the first relief spring, provides pilot pressure by the first relief spring; The first described relief spring the other end is to be connected with the first reduction valve regulating mechanism; The second described reduction valve is guiding valve, and one end of its second relief pressure valve cartridge is connected with one end of the second relief spring, provides pilot pressure by the second relief spring; The second described relief spring the other end is to be connected with the second decompression regulating mechanism; The T hydraulic fluid port of priority device valve body, A1 hydraulic fluid port, A2 hydraulic fluid port, P hydraulic fluid port, B1 hydraulic fluid port, B2 hydraulic fluid port are communicated to respectively corresponding oil circuit.
Further: the first described reduction valve regulating mechanism is provided with and adopts the first reduction valve being threaded to adjust screw rod and the first pressure reducing valve screw nut, the inner hole sleeve of the first described pressure reducing valve screw nut is connected to the first reduction valve force-transmitting seat, one end of the first described reduction valve force-transmitting seat is connected with the first relief spring, and the other end withstands the first reduction valve force-transmitting seat under the effect of the first relief spring.
Further: the first described reduction valve regulating mechanism is provided with and adopts the second reduction valve being threaded to adjust screw rod and the second pressure reducing valve screw nut, the inner hole sleeve of the second described pressure reducing valve screw nut is connected to the second reduction valve force-transmitting seat, one end of the second described reduction valve force-transmitting seat is connected with the second relief spring, and the other end withstands the second reduction valve force-transmitting seat under the effect of the second relief spring.
Further: the first described reduction valve and the second reduction valve are cocurrent and parallel setting.
Advantage of the present invention is in the time that many actions operate simultaneously, by guide's priority device and system thereof, improves the harmony of many actions, can improve gear efficiency simultaneously.
Accompanying drawing explanation
Accompanying drawing is used for explaining the present invention.
Accompanying drawing 1 is existing guide's hydraulic control system schematic diagram.
Accompanying drawing 2 is hydraulic schematic diagrams of priority device A of the present invention.
Accompanying drawing 3 is section of structures of priority device A of the present invention.
Accompanying drawing 4 is systematic schematic diagrams of the present invention.
Embodiment
Reference character is as follows:
Priority device A, the first reduction valve 11, the second reduction valve 12, rotary motor 21, oil hydraulic cylinder 22, the first pilot-actuated valve 23, the second pilot-actuated valve 24, main pump 25, the first selector valve 26, the second selector valve 27, priority device valve body 10, the first pressure-relief valve spring 111, the first pressure-relief valve spring seat 112, the first reduction valve spool 113, the first reduction valve screw plug 114, the first reduction valve locking nut 115, the first reduction valve is adjusted screw rod 116, the first pressure reducing valve screw nut 117, the first reduction valve force-transmitting seat 118, the second pressure-relief valve spring 121, the second pressure-relief valve spring seat 122, the second reduction valve spool 123, the second reduction valve screw plug 124, the second reduction valve locking nut 125, the second reduction valve is adjusted screw rod 126, the second pressure reducing valve screw nut 127, the second reduction valve force-transmitting seat 128.
As shown in Figure 4, priority system on guide's hydraulic control oil circuit of the present invention comprises main pump 25, pilot-actuated valve, the first selector valve 26, the second selector valve 27, the first pilot-actuated valve 23, the second pilot-actuated valve 24, between the control end of described the second selector valve 27 and outside control mouth P, be provided with priority device A, as shown in Figure 2, A1 mouth, A2 mouth, the P mouth that described priority device A includes the first reduction valve 11 and the second reduction valve 12, the first reduction valve 11 is communicated with respectively 3 mouthfuls of the first pilot valve, the XAs mouth of the second selector valve, the first pilot-actuated valve 1 mouthful; The B1 mouth of the second reduction valve 12, B2 mouth, P mouth are communicated with respectively 4 mouthfuls of the first pilot valve, the XBs mouth of the second selector valve, the first pilot-actuated valve 1 mouthful.
The drain tap of the first reduction valve 11 and the second reduction valve 12 is communicated with fuel tank.
As shown in Figure 3, the priority device of the priority system on guide's hydraulic control oil circuit of the present invention, priority device valve body 10 includes the first reduction valve 11 and the second reduction valve 12, the first described reduction valve 11 is guiding valve, one end of its first relief pressure valve cartridge 113 is connected with one end of the first relief spring 111, provides pilot pressure by the first relief spring 111; First described relief spring 111 the other ends are to be connected with the first reduction valve regulating mechanism; The second described reduction valve 12 is guiding valve, and one end of its second relief pressure valve cartridge 123 is connected with one end of the second relief spring 121, provides pilot pressure by the second relief spring 121; Second described relief spring 121 the other ends are to be connected with the second decompression regulating mechanism; The T hydraulic fluid port of priority device valve body 10, A1 hydraulic fluid port, A2 hydraulic fluid port, P hydraulic fluid port, B1 hydraulic fluid port, B2 hydraulic fluid port are communicated to respectively corresponding oil circuit.
The first described reduction valve regulating mechanism is provided with and adopts the first reduction valve being threaded to adjust screw rod 116 and the first pressure reducing valve screw nut 117, the inner hole sleeve of the first described pressure reducing valve screw nut 117 is connected to the first reduction valve force-transmitting seat 118, one end of the first described reduction valve force-transmitting seat 118 is connected with the first relief spring 111, and the other end withstands the first reduction valve force-transmitting seat 118 under the effect of the first relief spring 111.
The first described reduction valve regulating mechanism is provided with and adopts the second reduction valve being threaded to adjust screw rod 126 and the second pressure reducing valve screw nut 127, the inner hole sleeve of the second described pressure reducing valve screw nut 127 is connected to the second reduction valve force-transmitting seat 128, one end of the second described reduction valve force-transmitting seat 128 is connected with the second relief spring 121, and the other end withstands the second reduction valve force-transmitting seat 128 under the effect of the second relief spring 121.
The first described reduction valve 11 and the second reduction valve 12 are cocurrent and parallel setting, and its adjustment screw rod is positioned at the same face of valve body simultaneously, as shown in Figure 3, T mouth is positioned at valve body upper end, be communicated with first, second reduction valve, P mouth is positioned at valve body lower end simultaneously, is communicated with first, second reduction valve simultaneously; A1 mouth, A2 mouth are positioned on the center valve body of T mouth and P mouth position, are communicated with the first reduction valve 11; B1 mouth, B2 mouth are positioned on the center valve body of T mouth and P mouth position, are communicated with the second reduction valve 12; Wherein A1 mouth, A2 mouth, T mouth, P mouth are positioned at a face of valve body, and B1 mouth, B2 mouth are positioned at the another side of valve body.
Working principle of the present invention is:
In the time operating the first pilot-actuated valve 23 and the second pilot-actuated valve 24 simultaneously, the spool that the XAb chamber that arrives the first selector valve 26 from 1 mouthful of outflow pressure oil of the second pilot-actuated valve 24 promotes selector valve moves, while enters the first reduction valve 11 from the pressure oil of 3 mouthfuls of outflows of the first pilot-actuated valve 23 through the A1 of priority device A mouth, because the outside control mouth P of the first reduction valve 11 has pressure oil effect, be depressurized output from the pressure oil of the A2 mouth of the first reduction valve 11, the spool that arrives the XAs chamber promotion selector valve of the second selector valve 27 moves, because guide's oil circuit pressure in XAs chamber reduces, spool amount of movement is inabundant, and guide's oil circuit pressure of XAb is not lowered, spool amount of movement maximum, the first selector valve 26 opening areas are large compared with the opening area of the second selector valve 27, use preferential first selector valve 26 of supplying with of hydraulic oil of main pump output.
Claims (6)
1. the priority system on guide's hydraulic control oil circuit, comprise main pump (25), the first selector valve (26), the second selector valve (27), the first pilot-actuated valve (23), the second pilot-actuated valve (24), it is characterized in that: between the control end of described the second selector valve (27) and outside control mouth (P), be provided with priority device (A), described priority device (A) includes the first reduction valve (11) and the second reduction valve (12), (A1) of the first reduction valve (11) mouthful, (A2) mouth, (P) mouth is communicated with respectively (3) mouthful of the first pilot valve, (Xas) of the second selector valve mouthful, (1) of the first pilot-actuated valve mouthful, (B1) mouth of the second reduction valve (12), (B2) mouth, (P) mouth are communicated with respectively (4) mouth of the first pilot valve, (XBs) mouth of the second selector valve, (1) mouth of the first pilot-actuated valve.
2. the priority system on guide's hydraulic control oil circuit according to claim 1, is characterized in that: the drain tap of the first reduction valve (11) and the second reduction valve (12) is communicated with fuel tank.
3. the priority device for the priority system on guide's hydraulic control oil circuit, it is characterized in that: priority device valve body (10) includes the first reduction valve (11) and the second reduction valve (12), described the first reduction valve (11) is guiding valve, one end of its first relief pressure valve cartridge (113) is connected with one end of the first relief spring (111), provides pilot pressure by the first relief spring (111); Described the first relief spring (111) the other end is to be connected with the first reduction valve regulating mechanism; Described the second reduction valve (12) is guiding valve, and one end of its second relief pressure valve cartridge (123) is connected with one end of the second relief spring (121), provides pilot pressure by the second relief spring (121); Described the second relief spring (121) the other end is to be connected with the second decompression regulating mechanism; (T) hydraulic fluid port of priority device valve body (10), (A1) hydraulic fluid port, (A2) hydraulic fluid port, (P) hydraulic fluid port, (B1) hydraulic fluid port, (B2) hydraulic fluid port are communicated to respectively corresponding oil circuit.
4. priority device according to claim 3, it is characterized in that: the first described reduction valve regulating mechanism is provided with and adopts the first reduction valve being threaded to adjust screw rod (116) and the first pressure reducing valve screw nut (117), the inner hole sleeve of described the first pressure reducing valve screw nut (117) is connected to the first reduction valve force-transmitting seat (118), one end of the first described reduction valve force-transmitting seat (118) is connected with the first relief spring (111), and the other end withstands the first reduction valve force-transmitting seat (118) under the effect of the first relief spring (111).
5. priority device according to claim 3, it is characterized in that: the first described reduction valve regulating mechanism is provided with and adopts the second reduction valve being threaded to adjust screw rod (126) and the second pressure reducing valve screw nut (127), the inner hole sleeve of described the second pressure reducing valve screw nut (127) is connected to the second reduction valve force-transmitting seat (128), one end of the second described reduction valve force-transmitting seat (128) is connected with the second relief spring (121), and the other end withstands the second reduction valve force-transmitting seat (128) under the effect of the second relief spring (121).
6. priority device according to claim 3, is characterized in that: described the first reduction valve (11) and the second reduction valve (12) are cocurrent and parallel setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210454473.XA CN103807240B (en) | 2012-11-14 | 2012-11-14 | Priority system on guide's hydraulic control oil circuit and priority device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210454473.XA CN103807240B (en) | 2012-11-14 | 2012-11-14 | Priority system on guide's hydraulic control oil circuit and priority device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103807240A true CN103807240A (en) | 2014-05-21 |
| CN103807240B CN103807240B (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210454473.XA Active CN103807240B (en) | 2012-11-14 | 2012-11-14 | Priority system on guide's hydraulic control oil circuit and priority device |
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| Country | Link |
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| CN (1) | CN103807240B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041740A (en) * | 2015-06-05 | 2015-11-11 | 柳州柳工挖掘机有限公司 | Pilot hydraulic control system with priority function |
| CN105840566A (en) * | 2015-01-27 | 2016-08-10 | 罗伯特·博世有限公司 | Hydraulic control device for supplying pressure medium to at least two hydraulic loads |
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| JPH07167105A (en) * | 1993-12-15 | 1995-07-04 | Zexel Corp | Unload valve structure for hydraulic control valve device |
| US20020007631A1 (en) * | 1998-03-04 | 2002-01-24 | Yasuhiro Sato | Pressure compensating valve, unloading pressure control valve and hydraulically operated device |
| CN101191507A (en) * | 2007-12-21 | 2008-06-04 | 沈阳矿山机械（集团）有限责任公司 | Hydraulic system for tunneling machine |
| CN201581431U (en) * | 2009-12-18 | 2010-09-15 | 广西柳工机械股份有限公司 | Loader load sensitization hydraulic device |
| CN102251996A (en) * | 2011-07-05 | 2011-11-23 | 天津柳工机械有限公司 | Engineering mechanical load sensing hydraulic system |
| CN202182071U (en) * | 2011-07-05 | 2012-04-04 | 天津柳工机械有限公司 | Engineering mechanical load sensing hydraulic system |
| CN102677730A (en) * | 2011-12-30 | 2012-09-19 | 柳工常州挖掘机有限公司 | Automatic idle speed control system of excavator |
| CN102733442A (en) * | 2011-04-02 | 2012-10-17 | 柳工常州挖掘机有限公司 | Gyration energy recycling system of hydraulic excavator |
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2012
- 2012-11-14 CN CN201210454473.XA patent/CN103807240B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07167105A (en) * | 1993-12-15 | 1995-07-04 | Zexel Corp | Unload valve structure for hydraulic control valve device |
| US20020007631A1 (en) * | 1998-03-04 | 2002-01-24 | Yasuhiro Sato | Pressure compensating valve, unloading pressure control valve and hydraulically operated device |
| CN101191507A (en) * | 2007-12-21 | 2008-06-04 | 沈阳矿山机械（集团）有限责任公司 | Hydraulic system for tunneling machine |
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| CN102733442A (en) * | 2011-04-02 | 2012-10-17 | 柳工常州挖掘机有限公司 | Gyration energy recycling system of hydraulic excavator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840566A (en) * | 2015-01-27 | 2016-08-10 | 罗伯特·博世有限公司 | Hydraulic control device for supplying pressure medium to at least two hydraulic loads |
| CN105840566B (en) * | 2015-01-27 | 2020-04-14 | 罗伯特·博世有限公司 | Hydraulic control device for supplying at least two hydraulic consumers with a pressure medium |
| CN105041740A (en) * | 2015-06-05 | 2015-11-11 | 柳州柳工挖掘机有限公司 | Pilot hydraulic control system with priority function |
| CN105041740B (en) * | 2015-06-05 | 2017-03-01 | 柳州柳工挖掘机有限公司 | There is the pilot hydraulic control system of priority function |
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| Publication number | Publication date |
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| CN103807240B (en) | 2016-05-25 |
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| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: Pull the the Liujiang River city Liuzhou County town Shuangyong road 545100 the Guangxi Zhuang Autonomous Region Applicant after: Liugong Machinery Co., Ltd. Applicant after: LIUGONG CHANGZHOU MACHINERY CO., LTD. Applicant after: Guangxi Liugong Machinery Co., Ltd. Address before: Pull the the Liujiang River city Liuzhou County town Shuangyong road 545100 the Guangxi Zhuang Autonomous Region Applicant before: Liugong Machinery Co., Ltd. Applicant before: Liugong Changzhou Excvavtor Co., Ltd. Applicant before: Guangxi Liugong Machinery Co., Ltd. |
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