CN102052361B - Novel hydraulic oil channel integrated valve for loader - Google Patents
Novel hydraulic oil channel integrated valve for loader Download PDFInfo
- Publication number
- CN102052361B CN102052361B CN 201010541619 CN201010541619A CN102052361B CN 102052361 B CN102052361 B CN 102052361B CN 201010541619 CN201010541619 CN 201010541619 CN 201010541619 A CN201010541619 A CN 201010541619A CN 102052361 B CN102052361 B CN 102052361B
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- Prior art keywords
- valve
- loader
- spading
- valves
- oil
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- 239000010720 hydraulic oil Substances 0.000 title claims abstract description 7
- 239000003921 oil Substances 0.000 claims abstract description 50
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002828 fuel tank Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- KQTVWCSONPJJPE-UHFFFAOYSA-N etridiazole Chemical compound CCOC1=NC(C(Cl)(Cl)Cl)=NS1 KQTVWCSONPJJPE-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- -1 sandstone Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a hydraulic oil channel integrated valve for a loader, which comprises logic valves (2), a shuttle valve (9), throttle valves (10) and hydraulic check valves (3). The output ends of the logic valves (2) are respectively connected with a large cavity end A1 (8) of a rotating bucket cylinder and a large cavity end A2 (1) of a lifting cylinder. The input ends of the logic valves are both connected with the end of an oil pump by the throttle valves, the shuttle valve (9) is connected between the output ends of the two logic valves, and the input ends of the logic valves are respectively connected with a small cavity end B1 (5) of the rotating bucket cylinder and a small cavity end B2 (4) of the lifting cylinder through the hydraulic check valves. The bucket of a loader can finish spading and loading work by one oil pump through the integrated valve. The problem that two oil pumps need to be used in the multiway valves of an original loader to converting flow or a large-capacity pump is needed for finishing spading and loading work is solved. The number of oil pumps is reduced, load flow during the spading is reduced, and power consumed by an engine is accordingly reduced. The integrated valve can meet the requirement of the spading work of the loader for spading force and reduce power consumed by the engine. Meanwhile, as the bucket can make complicated motion, the filled degree of the bucket is improved, the loading time is shortened, and the production efficiency is accordingly improved.
Description
Technical field
The present invention relates to the engineering mechanical hydraulic oil road, relate in particular to the control valve in the loader usefulness hydraulic circuit.
Background technique
Loader is the construction plant that is widely used in the construction projects such as highway, railway, building, water power, harbour, mine, is one of indispensable important equipment in the industries such as engineering construction.The purposes of loader mainly is the bulk materials such as shovel dress soil, sandstone, lime and coal, also can dig operation to the slight shovel of the works such as ore, pan soil, can save in a large number manpower, greatly reduce labor intensity, increases work efficiency.The loader working procedure mainly comprises spading and lifting, and wherein load is maximum when spading, and consumption of engine power is maximum.In existing loader, multi-way valve is an important hydraulic control component, China 5T level loader major part is to collaborate to provide rotary ink tank and lift cylinder power with two oil pumps at present, and (pressure oil is series connection to pass through multi-way valve, oil return is in parallel) control respectively rotary ink tank and lift cylinder is realized spading and lifting work, loader was finished in three steps of work time-division, the first step is that loader enters stockpile in the effect incision of tractive force, carries out second step when the speed of a motor vehicle of incision stockpile drops to zero.Second step is that loader is repeatedly handled rotary ink tank and made loading shovel fill material, carries out for the 3rd step after filling material, and the 3rd step was loader improving material and discharging.Analyze from the loader actual job, the work of traditional loader second step is mainly reflected in the induced pressure under the large flow, thereby consumption of engine power is maximum.
Summary of the invention
Need the problem of a large amount of consumption of engine power when the spading for multi-way valve control loader in the above-mentioned prior art, the invention provides a kind of loader that not only both can make and when spading, satisfy the induced pressure maximum, and can reduce engine power, reduce the hydraulic circuit integrated valve of energy consumption.
Described loader hydraulic oil way integrated valve comprises logical valve, shuttle valve, throttle valve and Pilot operated check valve, described logical valve output terminal links to each other with the large chamber of lift cylinder end A2 with the large chamber of rotating bucket cylinder end A1 respectively, the logical valve input end all links to each other with the oil pump end by throttle valve, be connected with shuttle valve between two logical valve output terminals, the logical valve input end links to each other with lift cylinder loculus end B2 with rotating bucket cylinder loculus end B1 respectively by Pilot operated check valve.
Also accessed safety valve between described logical valve input end and the Pilot operated check valve.
Working principle of the present invention is: according to hydraulic pressure theoretical formula: N (power)=Q (flow) * P (pressure)/61.2, hence one can see that: power N is directly proportional with flow and induced pressure.The selected of oil pump is to determine according to Hydraulic System Principle and the performance parameter requirement of loader, by above-mentioned integrated valve principle, when loader during at spading, oil pump is to the integrated valve fuel feeding, at this moment, the shuttle valve that links to each other with two logical valves comes balance by rotating bucket cylinder and lift cylinder load, pressure fuel pump oil by throttle valve and logical valve respectively in proportion flow to rotating bucket cylinder large chamber end and the large chamber of lift cylinder end fuel feeding, pressure oil is opened Pilot operated check valve and is made rotating bucket cylinder and lift cylinder oil return simultaneously, after rotating bucket cylinder and lift cylinder obtain pressure oil, loader has produced a compound motion, the composite force that compound motion forms overcomes load (this moment, induced pressure can diminish) jointly, make the scraper bowl of loader fill at the volley material, reach the purpose of loading.
Utilize integrated valve of the present invention, can make the scraper bowl of loader finish the work of spading loading with one once the oil pump that has equivalent discharge in the oil circuit week now, solved the problem that needs two oil pumps interflow or high-capacity pump to finish the work of spading loading in the multi-way valve of original loader, saved an oil pump, reduce the load flow when spading, thereby reduced the power that motor consumes.The digging force requirement had reduced again engine power consumption when the present invention can finish the work of loader spading, had improved the scraper bowl filling degree and had shortened the loading time owing to scraper bowl can produce compound motion simultaneously, thereby improved manufacturing efficiency.
As shown in Figure 2, described integrated valve also can link to each other with existing multi-way valve main valve and realize loader work, its working procedure is: when solenoid valve is not switched on, oil pump V and oil pump R merge work, realize the effect identical with multichannel fuel tap on the existing loader, when loader when carrying out spading, this moment, the loader load was maximum, shuttle valve is controlled by the size of rotating bucket cylinder and lift cylinder load feedback, this moment is by going solenoid valve to make the solenoid valve energising, oil pump P work, oil pump R off-load quits work, respectively to rotating bucket cylinder large chamber end and the large chamber of lift cylinder end fuel feeding, open rotating bucket cylinder loculus end and lift cylinder loculus end by Pilot operated check valve simultaneously, makes the pressure oil in rotating bucket cylinder loculus end and the lift cylinder loculus end flow back to fuel tank by pressure oil by two logical valves for oil pump P pressure oil.Thereby can make scraper bowl produce compound motion, finish charging work, this moment, multichannel fuel tap main valve shown in Figure 2 just became integrated valve shown in Figure 1, namely as long as connect integrated valve at existing multi-way valve main valve, the solenoid valve energising just can make existing multi-way valve only start an operation of oil pump when finishing the loader spading, thereby can reduce the consumption of motor merit, reach the purpose of energy saving; When scraper bowl will be accelerated to promote speed in lifting, solenoid valve outage, oil pump (R) and oil (P) merging work.
Description of drawings
Fig. 1 is the hydraulic schematic diagram of integrated valve of the present invention,
Fig. 2 is the hydraulic schematic diagram that integrated valve of the present invention is connected with the multi-way valve main valve.
In the drawings, 1, the large chamber of lift cylinder end A22, logical valve 3, Pilot operated check valve 4, lift cylinder loculus end B25, rotating bucket cylinder loculus end B16, safety valve 7, oil pump P oil inlet pipe 8, the large chamber of rotating bucket cylinder end A19, shuttle valve 10, throttle valve 11, guiding valve 12, steel ball positioning means 13, overload valve 14, fuel tank 15, relief valve 16, oil pump R oil inlet pipe 17, solenoid valve
Embodiment
Take existing suitable worker's 50 type loaders (manufacturing of Yichuan engineering machinery company) as example, in the hydraulic system during loader spading maximum load pressure be 18MPa, peak rate of flow is 370.86L/min in the hydraulic system, and consumption of engine power is 18 * 370.86/ (61.2 * 0.8)=136.25KW when adopting existing multi-way valve main valve spading; And when adopting integrated valve of the present invention, in the hydraulic system when spading maximum load pressure still be 18MPa, peak rate of flow becomes 131.67L/min, and the engine power that adopts integrated valve to consume when the scraper bowl spading is 131.67 * 18/ (61.2 * 0.8)=48.4KW.From above-mentioned data as can be known, adopt integrated valve of the present invention when 50 type loaders are finished spading, engine power can reduce KW more than 80, thereby can reduce the motor energy consumption.
Claims (2)
1. loader hydraulic oil way integrated valve, it is characterized in that: it comprises logical valve (2), shuttle valve (9), throttle valve (10) and Pilot operated check valve (3), described logical valve output terminal links to each other with the large chamber of lift cylinder end A2 (1) with the large chamber of rotating bucket cylinder end A1 (8) respectively, the logical valve input end all links to each other with the oil pump end by throttle valve (10), be connected with shuttle valve (9) between two logical valve output terminals, the logical valve input end links to each other with lift cylinder loculus end B2 (4) with rotating bucket cylinder loculus end B1 (5) respectively by Pilot operated check valve (3).
2. loader hydraulic oil way integrated valve according to claim 1 is characterized in that: be connected with safety valve (6) between described logical valve input end and the Pilot operated check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010541619 CN102052361B (en) | 2010-11-02 | 2010-11-02 | Novel hydraulic oil channel integrated valve for loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010541619 CN102052361B (en) | 2010-11-02 | 2010-11-02 | Novel hydraulic oil channel integrated valve for loader |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102052361A CN102052361A (en) | 2011-05-11 |
| CN102052361B true CN102052361B (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010541619 Expired - Fee Related CN102052361B (en) | 2010-11-02 | 2010-11-02 | Novel hydraulic oil channel integrated valve for loader |
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| Country | Link |
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| CN (1) | CN102052361B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103132549A (en) * | 2013-01-26 | 2013-06-05 | 王开怀 | Arc spading type loader |
| CN104895855B (en) * | 2014-03-03 | 2018-05-01 | 卡特彼勒（青州）有限公司 | For the hydraulic system of machine, machine and hydraulic system control method |
| CN104196809B (en) * | 2014-08-19 | 2016-08-24 | 合肥长源液压股份有限公司 | A kind of pile-up valve for excavator energy regenerating Yu recycling |
| CN104481953B (en) * | 2014-12-12 | 2016-06-15 | 燕山大学 | The pile-up valve that independently controls of throttling limit that assignment of traffic is unrelated with load pressure |
| CN106151147B (en) * | 2015-04-14 | 2020-09-04 | 卡特彼勒（青州）有限公司 | Hydraulic system, control method thereof and machine comprising hydraulic system |
| CN110886729B (en) * | 2019-12-01 | 2020-10-30 | 西南交通大学 | Single-acting plunger cylinder hydraulic system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4261451A (en) * | 1979-03-02 | 1981-04-14 | Northwest Engineering Company | Clutch drag controls for hoist drum |
| GB2242761A (en) * | 1990-02-26 | 1991-10-09 | Rexroth Mannesmann Gmbh | A load independent valve control for a plurality of hydraulic users |
| CN2402573Y (en) * | 1999-12-03 | 2000-10-25 | 徐州装载机厂 | Command-controlled steering gear |
| CN201301839Y (en) * | 2008-07-23 | 2009-09-02 | 厦门厦工小型机械有限公司 | Hydraulic pilot control device for minitype loader |
| CN201858210U (en) * | 2010-11-02 | 2011-06-08 | 王开怀 | Novel hydraulic oil way integrated valve of loader |
-
2010
- 2010-11-02 CN CN 201010541619 patent/CN102052361B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4261451A (en) * | 1979-03-02 | 1981-04-14 | Northwest Engineering Company | Clutch drag controls for hoist drum |
| GB2242761A (en) * | 1990-02-26 | 1991-10-09 | Rexroth Mannesmann Gmbh | A load independent valve control for a plurality of hydraulic users |
| CN2402573Y (en) * | 1999-12-03 | 2000-10-25 | 徐州装载机厂 | Command-controlled steering gear |
| CN201301839Y (en) * | 2008-07-23 | 2009-09-02 | 厦门厦工小型机械有限公司 | Hydraulic pilot control device for minitype loader |
| CN201858210U (en) * | 2010-11-02 | 2011-06-08 | 王开怀 | Novel hydraulic oil way integrated valve of loader |
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| Publication number | Publication date |
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| CN102052361A (en) | 2011-05-11 |
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Application publication date: 20110511 Assignee: Pingxiang City circumference Industrial Co., Ltd. of Jiangxi Province Assignor: Wang Kaihuai|Liang Fuchun Contract record no.: 2013360000043 Denomination of invention: Novel hydraulic oil channel integrated valve for loader Granted publication date: 20130306 License type: Exclusive License Record date: 20130705 |
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Effective date of registration: 20160506 Address after: 337200 Luxi Industrial Park, Pingxiang, Jiangxi Patentee after: Pingxiang City circumference Industrial Co., Ltd. of Jiangxi Province Address before: 337200, Jiangxi, Pingxiang, Luxi County, Luxi Town, Yang Tian Village (Pingxiang Fangyuan Industrial Co., Ltd.) Patentee before: Wang Kaihuai Patentee before: Liang Fuchun |
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Denomination of invention: Novel hydraulic oil channel integrated valve for loader Effective date of registration: 20160518 Granted publication date: 20130306 Pledgee: Luxi Jiangxi rural commercial bank Limited by Share Ltd Pledgor: Pingxiang City circumference Industrial Co., Ltd. of Jiangxi Province Registration number: 2016360000005 |
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Granted publication date: 20130306 Termination date: 20201102 |
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| CF01 | Termination of patent right due to non-payment of annual fee |