CN110499799A - A kind of pilot valve and diverter take oil return line, loader hydraulic system and method - Google Patents
A kind of pilot valve and diverter take oil return line, loader hydraulic system and method Download PDFInfo
- Publication number
- CN110499799A CN110499799A CN201910753365.4A CN201910753365A CN110499799A CN 110499799 A CN110499799 A CN 110499799A CN 201910753365 A CN201910753365 A CN 201910753365A CN 110499799 A CN110499799 A CN 110499799A
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- oil
- valve
- diverter
- branch pipe
- main
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Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000003321 amplification Effects 0.000 claims abstract description 33
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 33
- 230000004907 flux Effects 0.000 claims abstract description 32
- 230000006837 decompression Effects 0.000 claims abstract description 12
- 239000002828 fuel tank Substances 0.000 claims description 10
- 239000000446 fuel Substances 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- KQTVWCSONPJJPE-UHFFFAOYSA-N etridiazole Chemical compound CCOC1=NC(C(Cl)(Cl)Cl)=NS1 KQTVWCSONPJJPE-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 sandstone Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to a kind of pilot valves and diverter to take oil return line, loader hydraulic system and method, including drainage line, and main oil inlet connection is in one end of the drainage line and flux amplification valve to drain pressure oil；The other end of the drainage line is connect with the entrance of oil sources valve, and the oil sources valve can be realized the decompression for flowing into pressure itself oil；The outlet of the oil sources valve is connect with the first branch pipe and the second branch pipe respectively, and first branch pipe is used to connect the main oil inlet of diverter, and second branch pipe is used to connect the main oil inlet of pilot valve.The oil sources valve includes the pressure reducing valve and check valve being sequentially communicated, and the oil inlet of the drainage line and pressure reducing valve connects, and the oil outlet of the check valve is connect with the first branch pipe and the second branch pipe respectively.The present invention is able to solve the defect that existing pilot valve and diverter are generated by guide's oil pump feed, omits the use of pioneer pump, and then save cost and space.
Description
Technical field
The invention belongs to loading machine technical fields, and in particular to a kind of pilot valve and diverter take oil return line, loading machine liquid
Press system and method.
Background technique
Loading machine is a kind of earthwork construction machinery for construction project, it is mainly used for shovel dress soil, sandstone, stone
The bulk materials such as ash, coal can also make lightly digging operations to ore, pan soil etc..
Inventor recognizes that on the loading machine of configuration pilot valve, boom cylinder and the flexible of rotary ink tank pass through elder generation
The commutation of pilot valve control bound, achievees the purpose that control action.Steering hydraulic system equipped with flux amplification valve, steering cylinder are stretched
Contracting is the oil sources commutation input carried out by flux amplification valve, and the commutation of oil sources is to control Flow amplification by small displacement diverter
The spool of valve commutates.
Wherein pilot valve and diverter have been required to pilot oil source, and in general pilot oil source is the guide being separately configured
Pump carries out fuel feeding.Pioneer pump, which is separately configured, can bring a larger increase of cost, including pioneer pump, sucks back the components such as oil pipe line and can also
Occupy certain use space.
Summary of the invention
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of pilot valve and diverter oil is taken to return
Road, loader hydraulic system and method.
The first object of the present invention is to provide a kind of pilot valve and diverter takes oil return line, be able to solve existing pilot valve and
The defect that diverter is generated by guide's oil pump feed omits the use of pioneer pump, and then saves cost and space.
The second object of the present invention is to provide a kind of loader hydraulic system, by the pioneer pump in former loader hydraulic system
Removal takes oil return line by installation pilot valve and diverter, forms new loader hydraulic system.
The third object of the present invention is to provide a kind of pilot valve and diverter method for extracting oil, is based on above-mentioned loader hydraulic system
System, provides the method for extracting oil of a kind of pilot valve and diverter.
The present invention provides a kind of pilot valve and diverter takes oil return line, including drainage line, one end of the drainage line
It connect with oil inlet main in flux amplification valve to drain pressure oil；
The other end of the drainage line is connect with the entrance of oil sources valve, and the oil sources valve can be realized inflow pressure itself
The decompression of oil；
The outlet of the oil sources valve is connect with the first branch pipe and the second branch pipe respectively, and first branch pipe is turned to for connecting
The main oil inlet of device, second branch pipe are used to connect the main oil inlet of pilot valve.
The input oil that a part makees oil sources valve is shunted using the main oil inlet of flux amplification valve, is after the decompression of oil sources valve
Pilot valve and diverter supply pressure oil, are omitted the use of pioneer pump, reduce the loss in cost and space.
Further, the oil sources valve includes the pressure reducing valve and check valve being sequentially communicated, the drainage line and pressure reducing valve
Oil inlet connection, the oil outlet of the check valve are connect with the first branch pipe and the second branch pipe respectively.
Oil sources valve is formed using the combination of pressure reducing valve check valve, can be depressurized by the main oil inlet punishment stream of flux amplification valve
Obtained pressure oil, pressure oil needed for complying with pilot valve and diverter.
Further, the oil sources valve further includes accumulator, the oil outlet of the check valve respectively with the first branch pipe, second
Pipe and accumulator connection.
Using accumulator structure, oil sources pressure stabilizing, accumulation of energy, the filtering after decompression can be made to be output to pilot valve and diverter
In oil sources it is more stable, improve manipulation stability and micro-control.
The present invention also provides a kind of loader hydraulic system, the pilot valve and diverter is utilized and takes oil return line, also
Including fuel tank, the fuel tank is connected to steering pump and working barrel respectively；
The oil outlet of the steering pump is connected to the main oil inlet of flux amplification valve, the oil outlet point of the flux amplification valve
It is not connect with two steering cylinders；
The oil outlet of the working barrel is connected to the main oil inlet of main control valve, the oil outlet of the main control valve respectively with
Boom cylinder is connected to rotary ink tank.
The present invention also provides a kind of pilot valve and diverter oil sources method for extracting oil, the pilot valve and diverter is utilized
Take oil return line, comprising the following steps:
Start steering pump, steering pump is the main oil inlet fuel feeding of flux amplification valve；
When engine idling does not turn to, at the main oil inlet of flux amplification valve have setting pressure, spin Xiang Shizhu into
Hydraulic fluid port mouth pressure can rise with it；
Pressure oil is drained to oil sources valve at the main oil inlet of flux amplification valve, depressurizes to pressure oil, the pressure after decompression
Oil is delivered to diverter and pilot valve.
Beneficial effects of the present invention:
1) the input oil that a part makees oil sources valve is shunted using the main oil inlet of flux amplification valve, after the decompression of oil sources valve
For pilot valve and diverter supply pressure oil, the use of pioneer pump is omitted, reduces the loss in cost and space.
2) oil sources valve is formed using the combination of pressure reducing valve check valve, can depressurized by the main oil inlet punishment of flux amplification valve
The pressure oil that stream obtains, pressure oil needed for complying with pilot valve and diverter.
3) accumulator structure is used, oil sources pressure stabilizing, accumulation of energy, the filtering after decompression can be made to be output to pilot valve and steering
Oil sources in device is more stable, improves manipulation stability and micro-control.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the restriction to the application for explaining the application.
Fig. 1 is the hydraulic circuit for using pioneer pump in the prior art for pilot valve and diverter fuel feeding when；
Fig. 2 is the hydraulic circuit that standby pressure is used in the embodiment of the present invention for pilot valve and diverter fuel feeding when.
In figure: 1, the first steering cylinder；2, the second steering cylinder；3, flux amplification valve；4, diverter；5, pioneer pump；6,
Steering pump；7, pilot valve；8, rotary ink tank；9, boom cylinder；10, working barrel；11, main control valve；13, oil sources valve；1301, it stores
It can device；14, fuel tank；15, drainage line；16, the first branch pipe；17, the second branch pipe；18, third branch pipe.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
In order to facilitate narration, if there is " upper and lower, left and right " printed words in the present invention, only indicate with attached drawing itself it is upper,
Under, left and right direction it is consistent, not to structure rise restriction effect, be merely for convenience of description of the present invention and simplification of the description, rather than
The equipment or element of indication or suggestion meaning must have a particular orientation, and be constructed and operated in a specific orientation, therefore cannot
It is interpreted as limitation of the present invention.
Such as Fig. 1 described in background technique, on the loading machine of configuration pilot valve 7, boom cylinder 9 and rotary ink tank 8 are stretched
Contracting is commutated by 7 control bound of pilot valve.Steering hydraulic system equipped with flux amplification valve 3 is carried out by flux amplification valve 3
Oil sources commutate input, the commutation of oil sources be by diverter 4 control flux amplification valve 3 spool commutation.
Therefore, it needs to supply oil sources to pilot valve 7 and diverter 4 using pioneer pump 5 in the prior art, causes cost liter
Height, space hold.
Embodiment 1
As shown in Fig. 2, a kind of pilot valve 7 and diverter 4 take oil return line, including drainage line 15, the drainage line 15
One end connect with main oil inlet in flux amplification valve 3 to drain pressure oil；
The other end of the drainage line 15 is connect with the entrance of oil sources valve 13, and the oil sources valve 13 can be realized inflow certainly
The decompression of body pressure oil；
The outlet of the oil sources valve 13 is connect with the first branch pipe 16 and the second branch pipe 17 respectively, and first branch pipe 16 is used for
The main oil inlet of diverter 4 is connected, second branch pipe 17 is used to connect the main oil inlet of pilot valve 7.
Further, the oil sources valve 13 includes the pressure reducing valve and check valve being sequentially communicated, the drainage line 15 and decompression
The oil inlet of valve connects, and the oil outlet of the check valve is connect with the first branch pipe 16 and the second branch pipe 17 respectively.
Further, the oil sources valve 13 further includes accumulator 1301, the oil outlet of the check valve respectively with the first branch pipe
16, the second branch pipe 17 and accumulator 1301 are connected to.
Further, the oil inlet of the pressure reducing valve is connected to one end of third branch pipe 18, the third branch pipe 18 it is another
Hold the main oil return opening for connecting diverter 4.
Embodiment 2
As shown in Fig. 2, a kind of loader hydraulic system, is utilized the pilot valve 7 and diverter 4 and takes oil return line, also
Including fuel tank 14, the fuel tank 14 is connected to steering pump 6 and working barrel 10 respectively；
The oil outlet of the steering pump 6 is connected to the main oil inlet of flux amplification valve 3, the flux amplification valve 3 it is fuel-displaced
Mouth is connect with two steering cylinders respectively.
Specifically, the connection of the elements such as flux amplification valve and diverter, steering cylinder, fuel tank and main control valve oil inlet
Mode, specific structure are all identical as Fig. 1 in the prior art, and details are not described herein again.But it is not considered as unclear.
Specifically, steering cylinder is divided into the first steering cylinder 1 and the second steering cylinder 2.
The oil outlet of the working barrel 10 is connected to the main oil inlet of main control valve 11, the oil outlet of the main control valve 11
It is connected to respectively with boom cylinder 9 and rotary ink tank 8.
Further, the pilot valve 7 can push the movement of spool in main control valve 11.
Further, main refluxing opening is connected to fuel tank 14 in the flux amplification valve 3.
Embodiment 3
A kind of pilot valve 7 and 4 oil sources method for extracting oil of diverter are utilized the pilot valve 7 and diverter 4 and oil are taken to return
Road, comprising the following steps:
Start steering pump 6, steering pump 6 is the main oil inlet fuel feeding of flux amplification valve 3；
When engine idling does not turn to, at the main oil inlet of flux amplification valve 3 have setting pressure, spin Xiang Shizhu into
Hydraulic fluid port mouth pressure can rise with it；
Pressure oil is drained to oil sources valve 13 at the main oil inlet of flux amplification valve 3, depressurizes to pressure oil, the pressure after decompression
Power oil is delivered to diverter 4 and pilot valve 7.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (8)
1. a kind of pilot valve and diverter take oil return line, which is characterized in that including drainage line, one end of the drainage line with
Main oil inlet connection is in flux amplification valve to drain pressure oil；
The other end of the drainage line is connect with the entrance of oil sources valve, and the oil sources valve, which can be realized, flows into pressure itself oil
Decompression；
The outlet of the oil sources valve is connect with the first branch pipe and the second branch pipe respectively, and first branch pipe is for connecting diverter
Main oil inlet, second branch pipe are used to connect the main oil inlet of pilot valve.
2. pilot valve according to claim 1 and diverter take oil return line, which is characterized in that the oil sources valve includes successively
The oil inlet of the pressure reducing valve and check valve of connection, the drainage line and pressure reducing valve connects, the oil outlet difference of the check valve
It is connect with the first branch pipe and the second branch pipe.
3. pilot valve according to claim 2 and diverter take oil return line, which is characterized in that the oil sources valve further includes storing
Energy device, the oil outlet of the check valve are connected to the first branch pipe, the second branch pipe and accumulator respectively.
4. pilot valve according to claim 2 and diverter take oil return line, which is characterized in that the oil inlet of the pressure reducing valve
It is connected to one end of third branch pipe, the other end of the third branch pipe is used to connect the main oil return opening of diverter.
5. a kind of loader hydraulic system, is utilized pilot valve described in any one of claim 1-4 and diverter takes oil
Circuit, which is characterized in that further include fuel tank, the fuel tank is connected to steering pump and working barrel respectively；
The oil outlet of the steering pump is connected to the main oil inlet of flux amplification valve, the oil outlet of the flux amplification valve respectively with
Two steering cylinder connections；
The oil outlet of the working barrel is connected to the main oil inlet of main control valve, the oil outlet of the main control valve respectively with swing arm
Oil cylinder is connected to rotary ink tank.
6. loader hydraulic system according to claim 5, which is characterized in that the pilot valve can push main control valve
The movement of middle spool.
7. loader hydraulic system according to claim 5, which is characterized in that in the flux amplification valve main refluxing opening with
Fuel tank connection.
8. a kind of pilot valve and diverter oil sources method for extracting oil, which is characterized in that any one of claim 5-7 institute is utilized
The pilot valve and diverter stated take oil return line, comprising the following steps:
Start steering pump, steering pump is the main oil inlet fuel feeding of flux amplification valve；
There is setting pressure when engine idling does not turn to, at the main oil inlet of flux amplification valve, spin Xiang Shizhu oil inlet
Mouth pressure can rise with it；
Pressure oil is drained to oil sources valve at the main oil inlet of flux amplification valve, depressurizes to pressure oil, and the pressure oil after decompression is defeated
It send to diverter and pilot valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910753365.4A CN110499799A (en) | 2019-08-15 | 2019-08-15 | A kind of pilot valve and diverter take oil return line, loader hydraulic system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910753365.4A CN110499799A (en) | 2019-08-15 | 2019-08-15 | A kind of pilot valve and diverter take oil return line, loader hydraulic system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110499799A true CN110499799A (en) | 2019-11-26 |
Family
ID=68586542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910753365.4A Pending CN110499799A (en) | 2019-08-15 | 2019-08-15 | A kind of pilot valve and diverter take oil return line, loader hydraulic system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110499799A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023036463A1 (en) * | 2021-09-07 | 2023-03-16 | Caterpillar Sarl | Pilot pressure control device |
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|---|---|---|---|---|
| CN102003426A (en) * | 2010-12-23 | 2011-04-06 | 山东临工工程机械有限公司 | Flow conversion control valve |
| CN202148557U (en) * | 2011-06-27 | 2012-02-22 | 浙江苏强格液压股份有限公司 | Hydraulic system of excavator |
| CN102767207A (en) * | 2012-08-06 | 2012-11-07 | 徐工集团工程机械股份有限公司 | Excavator boom energy regenerating device and boom energy regenerating valve block thereof |
| CN103711172A (en) * | 2013-12-18 | 2014-04-09 | 广西柳工机械股份有限公司 | Loader four-pump quantitative confluence hydraulic system |
| CN103993622A (en) * | 2014-05-07 | 2014-08-20 | 山东临工工程机械有限公司 | Hydraulic control system of loader |
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| CN204982991U (en) * | 2015-07-03 | 2016-01-20 | 西安科技大学 | Excavator swing arm decline hydraulic control system |
| CN105604109A (en) * | 2016-03-22 | 2016-05-25 | 潍柴动力股份有限公司 | Hydraulic regeneration system of movable arm of excavator |
| EP3208495A1 (en) * | 2016-02-18 | 2017-08-23 | Takeuchi MFG.Co.,Ltd. | Control device for hydraulic traveling device |
| CN107882100A (en) * | 2017-10-11 | 2018-04-06 | 柳州柳工挖掘机有限公司 | excavator hydraulic control method and control system |
-
2019
- 2019-08-15 CN CN201910753365.4A patent/CN110499799A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003426A (en) * | 2010-12-23 | 2011-04-06 | 山东临工工程机械有限公司 | Flow conversion control valve |
| CN202148557U (en) * | 2011-06-27 | 2012-02-22 | 浙江苏强格液压股份有限公司 | Hydraulic system of excavator |
| CN102767207A (en) * | 2012-08-06 | 2012-11-07 | 徐工集团工程机械股份有限公司 | Excavator boom energy regenerating device and boom energy regenerating valve block thereof |
| CN103711172A (en) * | 2013-12-18 | 2014-04-09 | 广西柳工机械股份有限公司 | Loader four-pump quantitative confluence hydraulic system |
| CN103993622A (en) * | 2014-05-07 | 2014-08-20 | 山东临工工程机械有限公司 | Hydraulic control system of loader |
| CN104328812A (en) * | 2014-09-23 | 2015-02-04 | 徐州徐工挖掘机械有限公司 | Hydraulic system for realizing flat pushing function of forward excavator |
| CN204982991U (en) * | 2015-07-03 | 2016-01-20 | 西安科技大学 | Excavator swing arm decline hydraulic control system |
| EP3208495A1 (en) * | 2016-02-18 | 2017-08-23 | Takeuchi MFG.Co.,Ltd. | Control device for hydraulic traveling device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023036463A1 (en) * | 2021-09-07 | 2023-03-16 | Caterpillar Sarl | Pilot pressure control device |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Applicant after: LOVOL Engineering Machinery Group Co.,Ltd. Address before: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Applicant before: QINGDAO LOVOL ENGINEERING MACHINERY Co.,Ltd. |
|
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191126 |