CN204475391U - For the hydraulic control system of backhoe loader - Google Patents
For the hydraulic control system of backhoe loader Download PDFInfo
- Publication number
- CN204475391U CN204475391U CN201520127174.4U CN201520127174U CN204475391U CN 204475391 U CN204475391 U CN 204475391U CN 201520127174 U CN201520127174 U CN 201520127174U CN 204475391 U CN204475391 U CN 204475391U
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- China
- Prior art keywords
- valve
- hydraulic control
- control system
- pilot valve
- backhoe loader
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- Expired - Fee Related
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- Operation Control Of Excavators (AREA)
Abstract
A kind of hydraulic control system for backhoe loader, comprise by motor-driven two-way oil pump, the hydraulic oil that first via oil pump exports is connected with multiple oil cylinder and running motor respectively through multiple hydraulic control multiposition valve, and the hydraulic oil that the second road binders pump exports is by being connected with the control end of each hydraulic control multiposition valve after multiple pilot valve again.A kind of hydraulic control system for backhoe loader that the utility model provides, by adopting two-way hydraulic circuit, wherein a road hydraulic circuit connects pilot valve, the mode of multiposition valve is controlled again with pilot valve, reduce labour intensity during operation, and due to the small volume of pilot valve, can according to the location arrangements pilot valve of convenient operation, thus mode of operation is convenient to learning and memory, be not easy to occur maloperation.
Description
Technical field
The utility model relates to backhoe loader field, particularly a kind of hydraulic control system for backhoe loader.
Background technology
Backhoe loader has another name called Cinder Machine, is the combining structure that hydraulic press mechanical arm and conveyer add running gear.Backhoe loader is provided with more hydraulic actuating mechanism, and existing hydraulic actuating mechanism many employings Manual multi-position valve controls.But Manual multi-position valve controls, exist and need the valve rod of operation more, multiposition valve valve volume is comparatively large, and operating valve lever is difficult to arrangement regularly, is difficult to memory, easily occurs maloperation in operation.And the strength needed during operating valve lever is comparatively large, labour intensity during operation is higher.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of hydraulic control system for backhoe loader, can reduce labour intensity during operation, and in preferred scheme, each action bars packet layout, easily remembers.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of hydraulic control system for backhoe loader, comprise by motor-driven two-way oil pump, the hydraulic oil that first via oil pump exports is connected with multiple oil cylinder and running motor respectively through multiple hydraulic control multiposition valve, and the hydraulic oil that the second road binders pump exports is by being connected with the control end of each hydraulic control multiposition valve after multiple pilot valve again.
Described hydraulic control multiposition valve comprises the first walking valve, swing arm valve, scraper bowl valve, bucket rod valve, revolving valve, lift valve, the second walking valve.
First walking valve is connected with two running motors respectively by pipeline with the second walking valve.
Described running motor in wheel type traveling mechanism for driving front and back wheel to walk, for driving the crawler travel of both sides in crawler type walking mechanism.
Swing arm valve is connected with boom cylinder by pipeline, scraper bowl valve is connected with bucket cylinder by pipeline, bucket rod valve is connected with bucket arm cylinder by pipeline, and lift valve is connected with hoist cylinder by pipeline, and revolving valve is connected with angling cylinder with one-way flow regulating valve by pipeline.
Described pilot valve comprises walking pilot valve, bucket rod of bucket pilot valve and swing arm revolution pilot valve;
Walking pilot valve is that one group four and first valves and second of walking valve of walking is connected;
Bucket rod of bucket pilot valve is one group four and is connected with scraper bowl valve and bucket rod valve;
Swing arm revolution pilot valve is that one group of four across is arranged, swing arm revolution pilot valve is connected with swing arm valve and revolving valve.
Described bucket rod of bucket pilot valve across is arranged.
Described two-way oil pump is duplex gear pump.
The return line of the hydraulic oil that first via oil pump exports is provided with the first cleaner, radiator and air filter.
The hydraulic oil that second road binders pump exports is provided with final cleaner and distributing valve on the pipeline entering pilot valve.
A kind of hydraulic control system for backhoe loader that the utility model provides, by adopting two-way hydraulic circuit, wherein a road hydraulic circuit connects pilot valve, the mode of multiposition valve is controlled again with pilot valve, reduce labour intensity during operation, and due to the small volume of pilot valve, can according to the location arrangements pilot valve of convenient operation, thus mode of operation is convenient to learning and memory, be not easy to occur maloperation.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Fig. 1 is integrally-built schematic diagram of the present utility model.
In figure: motor 1, duplex gear pump 2, radiator 3, first cleaner 4, final cleaner 5, distributing valve 6, walking pilot valve 7, bucket rod of bucket pilot valve 8, swing arm revolution pilot valve 8', lifting pilot valve 9, hydraulic control multiposition valve 10, first walking valve 101, swing arm valve 102, scraper bowl valve 103, bucket rod valve 104, revolving valve 105, lift valve 106, second walking valve 107, running motor 11, boom cylinder 12, bucket cylinder 13, bucket arm cylinder 14, angling cylinder 15, one-way flow regulating valve 16, hoist cylinder 17, air filter 18, temperature and content gauge 19, return filter 20.
Detailed description of the invention
As in Fig. 1, a kind of hydraulic control system for backhoe loader, comprise the two-way oil pump driven by motor 1, the hydraulic oil that first via oil pump exports is connected with multiple oil cylinder and running motor 11 respectively through multiple hydraulic control multiposition valve 10, and the hydraulic oil that the second road binders pump exports is by being connected with the control end of each hydraulic control multiposition valve after multiple pilot valve again.Control hydraulic control multiposition valve by pilot valve, then control the mode of oil cylinder and running motor, reduce labour intensity during operation, the mode adopting two-way to export, the pressure avoiding hydraulic control oil and primer fluid force feed interferes with each other.Due to the small volume of pilot valve, can arrange according to the position of convenient operation.
Described hydraulic control multiposition valve 10 comprises the first walking valve 101, swing arm valve 102, scraper bowl valve 103, bucket rod valve 104, revolving valve 105, lift valve 106, second walking valve 107.For the backhoe loader that conveyer can fold, be also provided with extra folding valve, not shown.Each hydraulic control multiposition valve 10 is all connected with oil return pipe.Hydraulic control multiposition valve 10 in this example all adopts 3 position switching valves.
First walking valve 101 is connected with two running motors 11 respectively by pipeline with the second walking valve 107.Described running motor 11 in wheel type traveling mechanism for driving front and back wheel to walk, for driving the crawler travel of both sides in crawler type walking mechanism.
Swing arm valve 102 is connected with boom cylinder 12 by pipeline, scraper bowl valve 103 is connected with bucket cylinder 13 by pipeline, bucket rod valve 104 is connected with bucket arm cylinder 14 by pipeline, lift valve 106 is connected with hoist cylinder 17 by pipeline, revolving valve 105 is connected with angling cylinder 15 with one-way flow regulating valve 16 by pipeline, structure thus, to make the operation of angling cylinder 15 more steady.
Described pilot valve comprises walking pilot valve 7, bucket rod of bucket pilot valve 8, lifting pilot solenoid valve 9 and swing arm revolution pilot valve 8';
Walking pilot valve 7 is that one group four and first valves 101 and second of walking valve 107 of walking is connected;
Bucket rod of bucket pilot valve 8 is one group four and is connected with scraper bowl valve 103 and bucket rod valve 104; Preferably, described bucket rod of bucket pilot valve 8 across is arranged.
For the backhoe loader that conveyer can fold, folding pilot valve is connected with folding valve, and folding valve is connected with folding cylinder, to control the folding of conveyer belt.
Lifting pilot solenoid valve 9 is connected with lift valve 106.
Swing arm revolution pilot valve 8' is that one group of four across is arranged, swing arm revolution pilot valve 8' is connected with swing arm valve 102 and revolving valve 105.Structure thus, by dividing into groups and meeting the location arrangements of operating habit, operation of being more convenient for, is also convenient to be familiar with operating procedure fast.
Described two-way oil pump is duplex gear pump 2.
The return line of the hydraulic oil that first via oil pump exports is provided with the first cleaner 4, radiator 3 and air filter 18.
The hydraulic oil that second road binders pump exports is provided with final cleaner 5 and distributing valve 6 on the pipeline entering pilot valve.Final cleaner 5 is arranged on in-line and is conducive to reducing oil pressure.Distributing valve can avoid maloperation when stopping.
The above embodiments are only optimal technical scheme of the present utility model; and should not be considered as restriction of the present utility model; the technical scheme that protection domain of the present utility model should be recorded with claim, the equivalents comprising technical characteristic in the technical scheme of claim record is protection domain.Namely the equivalent replacement within the scope of this improves, also within protection domain of the present utility model.
Claims (10)
1. the hydraulic control system for backhoe loader, comprise the two-way oil pump driven by motor (1), it is characterized in that: the hydraulic oil that first via oil pump exports is connected with multiple oil cylinder and running motor (11) respectively through multiple hydraulic control multiposition valve (10), the hydraulic oil that the second road binders pump exports is by being connected with the control end of each hydraulic control multiposition valve after multiple pilot valve again.
2. a kind of hydraulic control system for backhoe loader according to claim 1, is characterized in that: described hydraulic control multiposition valve (10) comprises the first walking valve (101), swing arm valve (102), scraper bowl valve (103), bucket rod valve (104), revolving valve (105), lift valve (106), the second walking valve (107).
3. a kind of hydraulic control system for backhoe loader according to claim 2, is characterized in that: the first walking valve (101) is connected with two running motors (11) respectively by pipeline with the second walking valve (107).
4. a kind of hydraulic control system for backhoe loader according to claim 3, it is characterized in that: described running motor (11) in wheel type traveling mechanism for driving front and back wheel to walk, for driving the crawler travel of both sides in crawler type walking mechanism.
5. a kind of hydraulic control system for backhoe loader according to claim 2, it is characterized in that: swing arm valve (102) is connected with boom cylinder (12) by pipeline, scraper bowl valve (103) is connected with bucket cylinder (13) by pipeline, bucket rod valve (104) is connected with bucket arm cylinder (14) by pipeline, lift valve (106) is connected with hoist cylinder (17) by pipeline, and revolving valve (105) is connected with angling cylinder (15) with one-way flow regulating valve (16) by pipeline.
6. a kind of hydraulic control system for backhoe loader according to claim 2, is characterized in that: (8') described pilot valve comprises walking pilot valve (7), bucket rod of bucket pilot valve (8) and swing arm revolution pilot valve;
Walking pilot valve (7) is that one group four and first valves (101) and second of walking valve (107) of walking is connected;
Bucket rod of bucket pilot valve (8) is one group four and is connected with scraper bowl valve (103) and bucket rod valve (104);
(8') swing arm revolution pilot valve is that one group of four across is arranged, (8') swing arm revolution pilot valve is connected with swing arm valve (102) and revolving valve (105).
7. a kind of hydraulic control system for backhoe loader according to claim 6, is characterized in that: described bucket rod of bucket pilot valve (8) across is arranged.
8. a kind of hydraulic control system for backhoe loader according to claim 1, is characterized in that: described two-way oil pump is duplex gear pump (2).
9. a kind of hydraulic control system for backhoe loader according to claim 1, is characterized in that: the return line of the hydraulic oil that first via oil pump exports is provided with the first cleaner (4), radiator (3) and air filter (18).
10. a kind of hydraulic control system for backhoe loader according to claim 1, is characterized in that: the hydraulic oil that the second road binders pump exports is provided with final cleaner (5) and distributing valve (6) on the pipeline entering pilot valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520127174.4U CN204475391U (en) | 2015-03-05 | 2015-03-05 | For the hydraulic control system of backhoe loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520127174.4U CN204475391U (en) | 2015-03-05 | 2015-03-05 | For the hydraulic control system of backhoe loader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204475391U true CN204475391U (en) | 2015-07-15 |
Family
ID=53631194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520127174.4U Expired - Fee Related CN204475391U (en) | 2015-03-05 | 2015-03-05 | For the hydraulic control system of backhoe loader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204475391U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239613A (en) * | 2015-10-19 | 2016-01-13 | 南通安捷机械有限公司 | Mini motoring multifunctional loader |
| CN105508328A (en) * | 2015-12-23 | 2016-04-20 | 新兴重工集团有限公司 | Hydraulic control system for light high-mobility emergency and assault breacher vehicle |
-
2015
- 2015-03-05 CN CN201520127174.4U patent/CN204475391U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239613A (en) * | 2015-10-19 | 2016-01-13 | 南通安捷机械有限公司 | Mini motoring multifunctional loader |
| CN105508328A (en) * | 2015-12-23 | 2016-04-20 | 新兴重工集团有限公司 | Hydraulic control system for light high-mobility emergency and assault breacher vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20160305 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |