CN103807240B - Priority system on guide's hydraulic control oil circuit and priority device - Google Patents
Priority system on guide's hydraulic control oil circuit and priority device Download PDFInfo
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- CN103807240B CN103807240B CN201210454473.XA CN201210454473A CN103807240B CN 103807240 B CN103807240 B CN 103807240B CN 201210454473 A CN201210454473 A CN 201210454473A CN 103807240 B CN103807240 B CN 103807240B
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Abstract
Priority system and priority device on a kind of guide's hydraulic control oil circuit; Be characterized in that the priority system on guide's hydraulic control oil circuit comprises main pump, pilot-actuated valve, the first reversal valve, the second reversal valve, the first pilot-actuated valve, the second pilot-actuated valve, between the control end of described the second reversal valve and outside control mouth P, be provided with priority device, priority device includes the first pressure-reducing valve and the second pressure-reducing valve, and the A1 mouth of the first pressure-reducing valve, A2 mouth, P mouth are communicated with respectively 3 mouthfuls of the first pilot-actuated valve, the XAs mouth of the second reversal valve, the second pilot-actuated valve 1 mouthful; The B1 mouth of the second pressure-reducing valve, B2 mouth, P mouth are communicated with respectively 4 mouthfuls of the first pilot-actuated valve, the XBs mouth of the second reversal valve, the first pilot-actuated valve 1 mouthful, comprise two pressure-reducing valves in priority device; Its advantage 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 machine efficiency simultaneously.
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 technology
For hydraulically powered equipment, conventionally be all to drive and control reversal valve by pilot-actuated valve, realize the control of hydraulic device action by the action of reversal 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 crawler excavator 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 reversal valve, the second reversal valve, the first pilot-actuated valve, the second pilot-actuated valve, between the control end of described the second reversal valve and outside control mouth P, be provided with priority device, described priority device includes the first pressure-reducing valve and the second pressure-reducing valve, and the A1 mouth of the first pressure-reducing valve, A2 mouth, P mouth are communicated with respectively 3 mouthfuls of the first pilot-actuated valve, the XAs mouth of the second reversal valve, the second pilot-actuated valve 1 mouthful; The B1 mouth of the second pressure-reducing valve, B2 mouth, P mouth are communicated with respectively 4 mouthfuls of the first pilot-actuated valve, the XBs mouth of the second reversal valve, the second pilot-actuated valve 1 mouthful.
Further: the drain tap of the first pressure-reducing valve and the second pressure-reducing 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 reversal valve from 1 mouthful of outflow pressure oil of pilot-actuated valve promotes the first reversal valve moves, enter the first pressure-reducing 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 pressure-reducing valve has pressure oil effect, be depressurized output from the pressure oil of the first pressure-reducing valve A2 mouth, the spool that the XAs chamber that arrives the second reversal valve promotes the second reversal 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 reversal valve aperture area is large compared with the aperture area of the second reversal valve, uses preferential first reversal 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 pressure-reducing valve and the second pressure-reducing valve, the first described pressure-reducing valve is guiding valve, one end of its first relief pressure valve cartridge is connected with one end of the first relief spring, provides controlled pressure by the first relief spring; The first described relief spring other end is to be connected with the first pressure-reducing valve guiding mechanism; The second described pressure-reducing 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 controlled pressure by the second relief spring; The second described relief spring other end is to be connected with the second decompression guiding 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 pressure-reducing valve guiding mechanism is provided with and adopts the first pressure-reducing 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 pressure-reducing valve force-transmitting seat, one end of the first described pressure-reducing valve force-transmitting seat is connected with the first relief spring, and the other end withstands the first pressure-reducing valve force-transmitting seat under the effect of the first relief spring.
Further: the second described pressure-reducing valve guiding mechanism is provided with and adopts the second pressure-reducing 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 pressure-reducing valve force-transmitting seat, one end of the second described pressure-reducing valve force-transmitting seat is connected with the second relief spring, and the other end withstands the second pressure-reducing valve force-transmitting seat under the effect of the second relief spring.
Further: the first described pressure-reducing valve and the second pressure-reducing 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 machine efficiency simultaneously.
Brief description of the drawings
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.
Detailed description of the invention
Reference numeral is as follows:
Priority device A, the first pressure-reducing valve 11, the second pressure-reducing valve 12, rotary motor 21, hydraulic cylinder 22, the first pilot-actuated valve 23, the second pilot-actuated valve 24, main pump 25, the first reversal valve 26, the second reversal valve 27, priority device valve body 10, the first pressure-relief valve spring 111, the first pressure-relief valve spring seat 112, the first pressure-reducing valve spool 113, the first pressure-reducing valve screw plug 114, the first pressure-reducing valve locking nut 115, the first pressure-reducing valve is adjusted screw rod 116, the first pressure reducing valve screw nut 117, the first pressure-reducing valve force-transmitting seat 118, the second pressure-relief valve spring 121, the second pressure-relief valve spring seat 122, the second pressure-reducing valve spool 123, the second pressure-reducing valve screw plug 124, the second pressure-reducing valve locking nut 125, the second pressure-reducing valve is adjusted screw rod 126, the second pressure reducing valve screw nut 127, the second pressure-reducing 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 reversal valve 26, the second reversal valve 27, the first pilot-actuated valve 23, the second pilot-actuated valve 24, between the control end of described the second reversal valve 27 and outside control mouth P, be provided with priority device A, as shown in Figure 2, described priority device A includes the first pressure-reducing valve 11 and the second pressure-reducing valve 12, the A1 mouth of the first pressure-reducing valve 11, A2 mouth, P mouth is communicated with respectively 3 mouthfuls of the first pilot-actuated valve, the XAs mouth of the second reversal valve, 1 mouthful of the second pilot-actuated valve, the B1 mouth of the second pressure-reducing valve 12, B2 mouth, P mouth are communicated with respectively 4 mouthfuls of the first pilot-actuated valve, the XBs mouth of the second reversal valve, the second pilot-actuated valve 1 mouthful.
The drain tap of the first pressure-reducing valve 11 and the second pressure-reducing 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 pressure-reducing valve 11 and the second pressure-reducing valve 12, the first described pressure-reducing 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 controlled pressure by the first relief spring 111; First described relief spring 111 other ends are to be connected with the first pressure-reducing valve guiding mechanism; The second described pressure-reducing 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 controlled pressure by the second relief spring 121; Second described relief spring 121 other ends are to be connected with the second decompression guiding 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 pressure-reducing valve guiding mechanism is provided with and adopts the first pressure-reducing 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 pressure-reducing valve force-transmitting seat 118, one end of the first described pressure-reducing valve force-transmitting seat 118 is connected with the first relief spring 111, and the other end withstands the first pressure-reducing valve force-transmitting seat 118 under the effect of the first relief spring 111.
The second described pressure-reducing valve guiding mechanism is provided with and adopts the second pressure-reducing 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 pressure-reducing valve force-transmitting seat 128, one end of the second described pressure-reducing valve force-transmitting seat 128 is connected with the second relief spring 121, and the other end withstands the second pressure-reducing valve force-transmitting seat 128 under the effect of the second relief spring 121.
The first described pressure-reducing valve 11 and the second pressure-reducing 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 pressure-reducing valve, P mouth is positioned at valve body lower end simultaneously, is communicated with first, second pressure-reducing 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 pressure-reducing 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 pressure-reducing 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.
Operation 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 reversal valve 26 from 1 mouthful of outflow pressure oil of the second pilot-actuated valve 24 promotes reversal valve moves, while enters the first pressure-reducing 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 pressure-reducing valve 11 has pressure oil effect, be depressurized output from the pressure oil of the A2 mouth of the first pressure-reducing valve 11, the spool that arrives the XAs chamber promotion reversal valve of the second reversal 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 reversal valve 26 aperture areas are large compared with the aperture area of the second reversal valve 27, use preferential first reversal 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 reversal valve (26), the second reversal 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 reversal valve (27) and outside control mouth P, be provided with priority device A, described priority device A includes the first pressure-reducing valve (11) and the second pressure-reducing valve (12), the A1 mouth of the first pressure-reducing valve (11), A2 mouth, P mouth is communicated with respectively the oil-out (3) of the first pilot-actuated valve, the XAs mouth of the second reversal valve, the oil-out (1) of the second pilot-actuated valve, the B1 mouth of the second pressure-reducing valve (12), B2 mouth, P mouth are communicated with respectively the oil-out (4) of the first pilot valve, the XBs mouth of the second reversal valve, the oil-out (1) of the second 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 pressure-reducing valve (11) and the second pressure-reducing 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 pressure-reducing valve (11) and the second pressure-reducing valve (12), described the first pressure-reducing 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 controlled pressure by the first relief spring (111); Described the first relief spring (111) other end is to be connected with the first pressure-reducing valve guiding mechanism; Described the second pressure-reducing 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 controlled pressure by the second relief spring (121); Described the second relief spring (121) other end is to be connected with the second decompression guiding 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.
4. priority device according to claim 3, it is characterized in that: the first described pressure-reducing valve guiding mechanism is provided with and adopts the first pressure-reducing 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 pressure-reducing valve force-transmitting seat (118), one end of the first described pressure-reducing valve force-transmitting seat (118) is connected with the first relief spring (111), and the other end withstands the first pressure-reducing 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 second described pressure-reducing valve guiding mechanism is provided with and adopts the second pressure-reducing 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 pressure-reducing valve force-transmitting seat (128), one end of the second described pressure-reducing valve force-transmitting seat (128) is connected with the second relief spring (121), and the other end withstands the second pressure-reducing 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 pressure-reducing valve (11) and the second pressure-reducing 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 |
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| Publication Number | Publication Date |
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| CN103807240A CN103807240A (en) | 2014-05-21 |
| CN103807240B true CN103807240B (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| 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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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015201318A1 (en) * | 2015-01-27 | 2016-08-11 | Robert Bosch Gmbh | Hydraulic control arrangement for pressure medium supply at least two hydraulic consumers |
| 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 |
Family Cites Families (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 |
| US6334308B1 (en) * | 1998-03-04 | 2002-01-01 | Komatsu Ltd. | 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 |
| CN102733442B (en) * | 2011-04-02 | 2015-07-22 | 柳工常州机械有限公司 | Gyration energy recycling system of hydraulic excavator |
| 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 |
| CN102677730B (en) * | 2011-12-30 | 2014-12-10 | 柳工常州挖掘机有限公司 | Automatic idle speed control system of excavator |
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- 2012-11-14 CN CN201210454473.XA patent/CN103807240B/en active Active
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| CN103807240A (en) | 2014-05-21 |
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| 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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