CN2610133Y - Quantitative variable confluent system of loader - Google Patents
Quantitative variable confluent system of loader Download PDFInfo
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- CN2610133Y CN2610133Y CN 03233517 CN03233517U CN2610133Y CN 2610133 Y CN2610133 Y CN 2610133Y CN 03233517 CN03233517 CN 03233517 CN 03233517 U CN03233517 U CN 03233517U CN 2610133 Y CN2610133 Y CN 2610133Y
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Abstract
The utility model relates to a transporter ration and variable converging system, which comprises a ration pump (4), an out loading valve (5), a working device comprised of multipart valves and variable pump (2), a priority valve (1) and a redirection viable device comprised of redirector, wherein the priority valve (1) CF export is connected with the redirector, the EF export of the priority valve (1) is connected with the multipart valves and the high pressure out loading valve (5), the ration pump (4) outlet is connected with inlet of the out loading valve (5), inlets of the variable pump (2), ration pump (4) and the high pressure out loading valve (5) are connected with an oil tank. The utility model is characterized in that the priority valve (1) EF export is connected with a one-way valve (7), the one-way valve (7) is connected with outlet of a multi-position valve (9), outlet of the multi-position valve (9) is connected with the multipart valves, inlet of the multipart valve (8) is connected with outlet of the high pressure out loading valve (5), outlet of the multipart valve (8) is connected with the oil tank.
Description
Technical field
The utility model relates to a kind of loader and decides variable interflow system.
Background technique
Domestic existing loader is decided variable interflow system and by pressure-gradient control valve load-sensitive steering system and work system is coupled together, and guarantees to turn to preferential all the time; And, turning to when not working, steering system guarantees that also double pump can be simultaneously to the work system fuel feeding.Though, the working efficiency of whole hydraulic system increases, the oil consumption of temperature elevation in hydraulic system and loader all decreases, but on performance, still there is defective: the one, if the load sensing signal of multi-way valve is inaccurate, when commutator meta and equipment are not worked, the steering variable pump can not the low pressure off-load, cause big flow by multi-way valve, produce bigger pressure drop.The 2nd, when equipment is failure to actuate (multi-way valve meta), the equipment metering pump is by the equilibrium valve recuperation valve off-load of multi-way valve, and pressure unloading is higher.Above defective makes that hydraulic system oil temperature is higher, and power loss is bigger.
The content of model utility
The purpose of this utility model provides a kind of variable interflow system that decides, and steering variable pump and work Constant Pump System are reasonably combined, and brings into play bigger functionality advantage, and safe and reliable, saves the energy.
The utility model is achieved in that
The utility model loader is decided variable interflow system, comprise metering pump (4), equipment and variable displacement pump (2) that multi-way valve constitutes, pressure-gradient control valve (1), the steering variable device that commutator constitutes, the CF outlet of pressure-gradient control valve (1) is connected with commutator, the EF outlet is connected with multi-way valve, the outlet of metering pump (4) is connected with multi-way valve, variable displacement pump (2), metering pump (4) is connected with fuel tank, the EF outlet of pressure-gradient control valve (1) is connected with one-way valve (7), one-way valve (7) is connected with the import of multiposition valve (9), the outlet of multiposition valve (9) is connected with multi-way valve, the import of multiposition valve (8) is connected with multi-way valve, and outlet is connected with fuel tank.
The outlet of metering pump (4) is connected with the import of unloading valve (5), the outlet of unloading valve (5) is connected with fuel tank, the import of multiposition valve (8) is connected with the outlet of unloading valve (5), and the outlet of multiposition valve (9) is connected with the outlet of unloading valve (5), and the outlet of unloading valve (5) is connected with multi-way valve.
There is shuttle valve (6) a tunnel to be connected with the control end of steering variable pump (2), one the tunnel is connected with pressure-gradient control valve (1) with commutator, one the tunnel is connected with multi-way valve, is connected with the controller of multiposition valve (8) from the electricity or the hydraulic control system signal one tunnel of multi-way valve, and one the tunnel is connected with the controller of multiposition valve (9).
The electricity of multi-way valve or hydraulic control system signal are from load sensor or the guide's control end or the spool of multi-way valve.
Oil sources or constant oil sources that the control mouth of multiposition valve (8), (9) and the guide of multi-way valve control high pressure unloading valve (5) front end of the oil sources of oil sources or multi-way valve load sensor oil sources or pressure-gradient control valve CF mouth or working pump (4) are connected.
The technical solution of the utility model is by multiposition valve paced work system and steering variable system to be coupled together to realize reasonably interflow, reaches the reduction temperature rise, raises the efficiency energy saving.
Description of drawings
Fig. 1 is a structural drawing of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.As shown in Figure 1, the utility model is made up of elements such as steering variable pump 2, work metering pump 4, pressure-gradient control valve 1, high pressure unloading valve 5, multiposition valve 8 and 9, one-way valve 7, shuttle valves 6.
The steering variable system is connected with commutator by variable displacement pump 2, pressure-gradient control valve 1.The paced work system is connected with multi-way valve by metering pump 4, high pressure unloading valve 5, low pressure off-load multiposition valve 8.Both are connected by one-way valve 7, multiposition valve 9.The control mouth of multiposition valve 8 is connected with hydraulic control signal, and import connects fuel tank, and outlet is connected with the outlet of high pressure unloading valve 6; The controller of multiposition valve 9 connects hydraulic control signal, and import and one-way valve, 7 outlet link to each other, exports to link to each other with multi-way valve.From the load sensing signal of multi-way valve or worker and pilot control signal with from the load sensing signal of commutator relatively by shuttle valve 6, realize flow, the pressure control of variable displacement pump 2.Variable displacement pump 2 at first satisfies the demand that turns to by the CF mouth of pressure-gradient control valve 1, and unnecessary flow can be given work system by the EF confession, and the branch interflow of steering pump and working pump is to realize by control multiposition valve 9.Can realize the meta low pressure off-load of hydraulic system by multiposition valve 8,9.
The action control signal of multiposition valve 8,9 can adopt: 1. from the load sensor signal of multi-way valve; 2. from guide's control signal of multi-way valve; 3. from the signal of multi-way valve spool action.Promptly if pressure greater than 0.08Mpa signal or other associated (as pressure, machinery) signal just can.
The driving signal of multiposition valve 8,9 spools can adopt the pressure oil-source scheme; 1. the guide from the multi-way valve operation controls oil sources; 2. from multi-way valve load sensor oil sources; 3. from the oil sources of pressure-gradient control valve CF mouth; 4. from oil sources and other constant oil sources of working pump off-load front end.
When the commutator of loader and multi-way valve all were in meta, steering variable pump 2 was with the off-load of float amount low pressure, and work metering pump 4 will be with the pressure more much smaller than conventional pressure drop (less than 0.6MPa, even reaching 0MPa) off-load.
When loader only turned to work, steering variable pump 2 will be according to turning to the demand supply flow, no spill losses.Work metering pump 4 is with the pressure that manys littler than conventional pressure drop (less than 0.6MPa, even reaching 0MPa) off-load.
When loader when only equipment work and work metering pump 4 flows are not enough, steering variable pump 2 will provide corresponding discharge according to work requirements, no spill losses.
When loader when only equipment work and work metering pump 4 flows are enough, steering variable pump 2 is with the off-load of float amount low pressure.
When loading machine steering and equipment were worked simultaneously, steering variable pump 2 preferential assurances turned to.
Claims (5)
1, loader is decided variable interflow system, comprise metering pump (4), equipment and variable displacement pump (2) that multi-way valve constitutes, pressure-gradient control valve (1), the steering variable device that commutator constitutes, the CF outlet of pressure-gradient control valve (1) is connected with commutator, the EF outlet is connected with multi-way valve, the outlet of metering pump (4) is connected with multi-way valve, variable displacement pump (2), metering pump (4) is connected with fuel tank, the EF outlet that it is characterized in that pressure-gradient control valve (1) is connected with one-way valve (7), one-way valve (7) is connected with the import of multiposition valve (9), the outlet of multiposition valve (9) is connected with multi-way valve, the import of multiposition valve (8) is connected with multi-way valve, and outlet is connected with fuel tank.
2, loader according to claim 1 is decided variable interflow system, the outlet that it is characterized in that metering pump (4) is connected with the import of unloading valve (5), the outlet of unloading valve (5) is connected with fuel tank, the import of multiposition valve (8) is connected with the outlet of unloading valve (5), the outlet of multiposition valve (9) is connected with the outlet of unloading valve (5), and the outlet of unloading valve (5) is connected with multi-way valve.
3, loader according to claim 1 and 2 is decided variable interflow system, it is characterized in that having shuttle valve (6) a tunnel to be connected with the control end of steering variable pump (2), one the tunnel is connected with pressure-gradient control valve (1) with commutator, one the tunnel is connected with multi-way valve, electricity or hydraulic control system signal one tunnel from multi-way valve are connected with the controller of multiposition valve (8), and one the tunnel is connected with the controller of multiposition valve (9).
4, loader according to claim 1 and 2 is decided variable interflow system, it is characterized in that the electricity of multi-way valve or hydraulic control system signal load sensor or guide's control end or the spool from multi-way valve.
5, loader according to claim 2 is decided variable interflow system, and oil sources or constant oil sources that the control mouth that it is characterized in that multiposition valve (8), (9) and the guide of multi-way valve control high pressure unloading valve (5) front end of the oil sources of oil sources or multi-way valve load sensor oil sources or pressure-gradient control valve CF mouth or working pump (4) are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03233517 CN2610133Y (en) | 2003-03-14 | 2003-03-14 | Quantitative variable confluent system of loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03233517 CN2610133Y (en) | 2003-03-14 | 2003-03-14 | Quantitative variable confluent system of loader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2610133Y true CN2610133Y (en) | 2004-04-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03233517 Expired - Fee Related CN2610133Y (en) | 2003-03-14 | 2003-03-14 | Quantitative variable confluent system of loader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2610133Y (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883571A (en) * | 2013-12-18 | 2014-06-25 | 广西柳工机械股份有限公司 | Electrohydraulic control multi-pump quantitive confluence hydraulic system for loading machines |
| CN104564873A (en) * | 2013-10-24 | 2015-04-29 | 卡特彼勒（青州）有限公司 | Single-load hydraulic system and machine |
| CN104728190A (en) * | 2014-12-17 | 2015-06-24 | 柳州柳工挖掘机有限公司 | Hydraulic energy-saving control system |
| CN104728199A (en) * | 2013-12-18 | 2015-06-24 | 北汽福田汽车股份有限公司 | Multi-way valve, multi-way valve system and engineering machinery |
| CN104806582A (en) * | 2015-04-23 | 2015-07-29 | 圣邦集团有限公司 | Engineering machinery intelligent confluence control hydraulic system |
| CN105984491A (en) * | 2015-02-04 | 2016-10-05 | 卡特彼勒（青州）有限公司 | Hydraulic system for machine and machine |
| CN106050762A (en) * | 2016-07-18 | 2016-10-26 | 江苏恒立液压科技有限公司 | Unloading hydraulic system |
| CN107269609A (en) * | 2017-07-26 | 2017-10-20 | 无锡市钻通工程机械有限公司 | Combining hydraulic system in load-sensitive valve |
| CN107842533A (en) * | 2016-09-19 | 2018-03-27 | 比亚迪股份有限公司 | Preferential valve gear and there is its vehicle |
| CN107882792A (en) * | 2017-11-10 | 2018-04-06 | 广西柳工机械股份有限公司 | Unloading electromagnetic valve and loader dual-pump combining hydraulic system |
| CN110285102A (en) * | 2019-07-01 | 2019-09-27 | 燕山大学 | Multiaxis emergency management and rescue vehicle fluid-link steering control system with Active Suspensions |
| CN113565817A (en) * | 2021-06-29 | 2021-10-29 | 英轩重工有限公司 | Unloading valve and loader hydraulic multi-pump confluence system thereof |
| CN115492814A (en) * | 2022-09-29 | 2022-12-20 | 徐工集团工程机械股份有限公司科技分公司 | Fixed variable control valve and hydraulic system thereof |
-
2003
- 2003-03-14 CN CN 03233517 patent/CN2610133Y/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564873A (en) * | 2013-10-24 | 2015-04-29 | 卡特彼勒（青州）有限公司 | Single-load hydraulic system and machine |
| CN104564873B (en) * | 2013-10-24 | 2018-12-21 | 卡特彼勒（青州）有限公司 | Single load hydraulic system and machine |
| CN103883571A (en) * | 2013-12-18 | 2014-06-25 | 广西柳工机械股份有限公司 | Electrohydraulic control multi-pump quantitive confluence hydraulic system for loading machines |
| CN104728199A (en) * | 2013-12-18 | 2015-06-24 | 北汽福田汽车股份有限公司 | Multi-way valve, multi-way valve system and engineering machinery |
| CN103883571B (en) * | 2013-12-18 | 2016-05-25 | 广西柳工机械股份有限公司 | The many pumps of loading machine electrichydraulic control are the hydraulic system at interflow quantitatively |
| CN104728190A (en) * | 2014-12-17 | 2015-06-24 | 柳州柳工挖掘机有限公司 | Hydraulic energy-saving control system |
| CN105984491A (en) * | 2015-02-04 | 2016-10-05 | 卡特彼勒（青州）有限公司 | Hydraulic system for machine and machine |
| CN104806582A (en) * | 2015-04-23 | 2015-07-29 | 圣邦集团有限公司 | Engineering machinery intelligent confluence control hydraulic system |
| CN104806582B (en) * | 2015-04-23 | 2016-08-24 | 圣邦集团有限公司 | A kind of hydraulic system at engineering machinery Based Intelligent Control interflow |
| CN106050762B (en) * | 2016-07-18 | 2018-02-27 | 江苏恒立液压科技有限公司 | Off-load hydraulic system |
| CN106050762A (en) * | 2016-07-18 | 2016-10-26 | 江苏恒立液压科技有限公司 | Unloading hydraulic system |
| CN107842533A (en) * | 2016-09-19 | 2018-03-27 | 比亚迪股份有限公司 | Preferential valve gear and there is its vehicle |
| CN107842533B (en) * | 2016-09-19 | 2020-03-31 | 比亚迪股份有限公司 | Priority valve device and vehicle with same |
| CN107269609A (en) * | 2017-07-26 | 2017-10-20 | 无锡市钻通工程机械有限公司 | Combining hydraulic system in load-sensitive valve |
| CN107269609B (en) * | 2017-07-26 | 2018-10-26 | 无锡市钻通工程机械有限公司 | Combining hydraulic system in load-sensitive valve |
| CN107882792A (en) * | 2017-11-10 | 2018-04-06 | 广西柳工机械股份有限公司 | Unloading electromagnetic valve and loader dual-pump combining hydraulic system |
| CN110285102A (en) * | 2019-07-01 | 2019-09-27 | 燕山大学 | Multiaxis emergency management and rescue vehicle fluid-link steering control system with Active Suspensions |
| CN110285102B (en) * | 2019-07-01 | 2020-05-15 | 燕山大学 | Multi-shaft emergency rescue vehicle hydraulic steering control system with active suspension |
| CN113565817A (en) * | 2021-06-29 | 2021-10-29 | 英轩重工有限公司 | Unloading valve and loader hydraulic multi-pump confluence system thereof |
| CN115492814A (en) * | 2022-09-29 | 2022-12-20 | 徐工集团工程机械股份有限公司科技分公司 | Fixed variable control valve and hydraulic system thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |