CN203924195U - Loader hydraulic control system - Google Patents
Loader hydraulic control system Download PDFInfo
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- CN203924195U CN203924195U CN201420230368.2U CN201420230368U CN203924195U CN 203924195 U CN203924195 U CN 203924195U CN 201420230368 U CN201420230368 U CN 201420230368U CN 203924195 U CN203924195 U CN 203924195U
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- hydraulic circuit
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- 239000010720 hydraulic oil Substances 0.000 claims abstract description 19
- 230000003321 amplification Effects 0.000 claims abstract description 16
- 230000004907 flux Effects 0.000 claims abstract description 16
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 16
- 239000012530 fluid Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 6
- 238000007599 discharging Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a kind of loader hydraulic control system, belong to engineering machinery hydraulic technical field, it comprises working barrel, hydraulic oil container, steering cylinder, steering gear, boom cylinder, rotary ink tank, flow divider-combiner, pressure selection valve, steering pump, flux amplification valve, pilot valve, banked direction control valves; Described flow divider-combiner is connected with working barrel, hydraulic oil container, flux amplification valve, banked direction control valves respectively by hydraulic circuit; Working barrel is connected with hydraulic oil container, steering gear respectively by hydraulic circuit; Pressure selection valve is connected with steering gear, pilot valve, banked direction control valves respectively by hydraulic circuit; Flux amplification valve is connected with steering cylinder by hydraulic circuit; Banked direction control valves is connected with boom cylinder, rotary ink tank respectively by hydraulic circuit.The utility model can solve the problem of the relatively high power loss that loader hydraulic system of working exists and the problem of hydraulic system of working assignment of traffic inequality, reduces manufacture and the later maintenance cost of loader hydraulic system.
Description
Technical field
The utility model belongs to engineering machinery hydraulic technical field, specifically, relates in particular to a kind of loader hydraulic control system.
Background technology
Loader is one of engineering machinery of commonly using the most, it is mainly used in spading operation and loading operation, in view of above-mentioned need of work, the equipment of loader need to be received bucket, lifting, discharging, decline, complete machine need to frequently carry out left and right turn, and above action is all controlled and realized by loader hydraulic system.
Generally speaking, the hydraulic system of loader is generally comprised of machining device hydraulic system and steering, and wherein, working barrel is supplied with separately rotary ink tank and the elevating ram in machining device hydraulic system.Steering pump is supplied with separately steering cylinder.According to national Specification, be to promote complete machine efficiency of loading, the working barrel of hydraulic system must meet the summation time that scraper bowl promotes three of times, decline, discharging.Under normal circumstances, working barrel, according to the stroke of oil cylinder, is selected the required hydraulic pump of large flow under satisfied three temporal summation, and the flow of the working barrel of choosing can meet rotary ink tank and the required flow of elevating ram.
But, in the loader of some differentiation, exist rotary ink tank stroke longer, the situation that boom cylinder stroke is relatively short, if continue to use the working barrel of large flow, although met the time of receiving bucket and discharging, shortened the working time of boom cylinder lifting and decline scraper bowl, make operating personnel cannot cosily control complete machine and carry out work.
The problem that has relatively high power loss for solving above-mentioned loader hydraulic system of working, adopts autonomous system or machining device hydraulic system interflow technology on existing market.Yet these interflow technology can not realize independent interflow, and have just realized the synchronous interflow technology of elevating ram and rotary ink tank.The inhomogeneous problem of hydraulic system of working assignment of traffic existing for above-mentioned loader, can also adopt variable hydraulic system of working, adopt load sensing variable pump, to be used for being embodied as hydraulic system of working, provide optimum Match flow, but the manufacture of this hydraulic system and maintenance cost are higher, be not suitable for promoting the use of.
Summary of the invention
The purpose of this utility model is to provide a kind of loader hydraulic control system, the problem that its relatively high power that can solve the existence of loader hydraulic system of working is lost and the problem of hydraulic system of working assignment of traffic inequality, manufacture and the later maintenance cost of reduction loader hydraulic system.
Loader hydraulic control system described in the utility model, comprise working barrel, hydraulic oil container, steering cylinder, steering gear, boom cylinder, rotary ink tank, described loader hydraulic control system also comprises flow divider-combiner, pressure selection valve, steering pump, flux amplification valve, pilot valve, banked direction control valves;
Described flow divider-combiner is connected with working barrel, hydraulic oil container, flux amplification valve, banked direction control valves respectively by hydraulic circuit;
Described working barrel is connected with hydraulic oil container, steering gear respectively by hydraulic circuit;
Described pressure selection valve is connected with steering gear, pilot valve, banked direction control valves respectively by hydraulic circuit;
Described flux amplification valve is connected with steering cylinder by hydraulic circuit;
Described banked direction control valves is connected with boom cylinder, rotary ink tank respectively by hydraulic circuit.
The P mouth of described flow divider-combiner is connected with the PF oil-out of flux amplification valve by hydraulic circuit, and hydraulic fluid port B is connected with the oil-out of working barrel by hydraulic circuit, and A mouth is connected with banked direction control valves by hydraulic circuit.
The 1b mouth of described pilot valve is connected with the b1 mouth of banked direction control valves, the b1 mouth of flow divider-combiner respectively by hydraulic circuit, and the 1a mouth of pilot valve is connected the a1 mouth of banked direction control valves and the a1 mouth of flow divider-combiner by hydraulic circuit.
Described steering gear adopts load sensing all-hydraulic steering gear.
Compared with prior art, the utlity model has following beneficial effect:
1, the utility model has increased flow divider-combiner in loader hydraulic system, can reduce loader work pump delivery, single
When solely realizing rotating bucket action, working barrel and steering pump are simultaneously to rotary ink tank fuel feeding;
2, the utility model solves problem and the hydraulic system of working stream of the relatively high power loss of loader hydraulic system of working existence
Amount is distributed uneven problem, reduces manufacture and the later maintenance cost of loader hydraulic system.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
In figure: 1, working barrel; 2, flow divider-combiner; 3, hydraulic oil container; 4, pressure selection valve; 5, steering pump; 6, flux amplification valve; 7, steering cylinder; 8, steering gear; 9, pilot valve; 10, banked direction control valves; 11, boom cylinder; 12, rotary ink tank.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
Embodiment 1: the loader hydraulic control system described in the utility model, comprise working barrel 1, hydraulic oil container 3, steering cylinder 7, steering gear 8, boom cylinder 11, rotary ink tank 12, described loader hydraulic control system also comprises flow divider-combiner 2, pressure selection valve 4, steering pump 5, flux amplification valve 6, pilot valve 9, banked direction control valves 10; Described flow divider-combiner 2 is connected with working barrel 1, hydraulic oil container 3, flux amplification valve 6, banked direction control valves 10 respectively by hydraulic circuit; Described working barrel 1 is connected with hydraulic oil container 3, steering gear 8 respectively by hydraulic circuit; Described pressure selection valve 4 is connected with steering gear 8, pilot valve 9, banked direction control valves 10 respectively by hydraulic circuit; Described flux amplification valve 6 is connected with steering cylinder 7 by hydraulic circuit; Described banked direction control valves 10 is connected with boom cylinder 11, rotary ink tank 12 respectively by hydraulic circuit.
Embodiment 2: the loader hydraulic control system described in the utility model, the P mouth of wherein said flow divider-combiner 2 is connected with the PF oil-out of flux amplification valve by hydraulic circuit, hydraulic fluid port B is connected with the oil-out of working barrel 1 by hydraulic circuit, and A mouth is connected with banked direction control valves 10 by hydraulic circuit; The 1b mouth of described pilot valve 9 is connected with the b1 mouth of banked direction control valves 10, the b1 mouth of flow divider-combiner 2 respectively by hydraulic circuit, and the 1a mouth of pilot valve 9 is connected the a1 mouth of banked direction control valves 10 and the a1 mouth of flow divider-combiner 2 by hydraulic circuit.All the other are identical with embodiment 1.
With embodiment, the course of work of the present utility model is described below by reference to the accompanying drawings:
When rotary ink tank 12 is received bucket, operated pilot valve 9, now pilot valve 9 can be given the b1 mouth of banked direction control valves 10 and the b1 mouth output signal of flow divider-combiner 2 simultaneously, hydraulic oil liquid in pilot valve 9 is through flow divider-combiner 2 and the main valve plug of flow divider-combiner 2 is pushed into lower end, and the hydraulic oil liquid of steering gear 8 collaborates to supply with rotary ink tank 12 by the hydraulic oil liquid of main valve plug and working barrel 1.
When rotary ink tank 12 discharging, operated pilot valve 9, pilot valve 9 can be given the a1 mouth of banked direction control valves 10 and the a1 mouth of flow divider-combiner 2 output signal simultaneously simultaneously, hydraulic oil liquid in pilot valve 9 is through flow divider-combiner 2 and the main valve plug of flow divider-combiner 2 is pushed into lower end, and the hydraulic oil liquid of steering gear 8 collaborates to supply with rotary ink tank 12 by the hydraulic oil liquid of main valve plug and working barrel 1.
In boom cylinder 11 work, because flow divider-combiner 2 is not received the signal that its inner main valve plug is opened, thereby now only has working barrel separately to boom cylinder 11 fuel feeding.
By above-mentioned course of action, the utility model can solve the problem of the relatively high power loss that loader hydraulic system of working exists and the problem of hydraulic system of working assignment of traffic inequality effectively, reduces manufacture and the later maintenance cost of loader hydraulic system.
Claims (4)
1. a loader hydraulic control system, comprise working barrel (1), hydraulic oil container (3), steering cylinder (7), steering gear (8), boom cylinder (11), rotary ink tank (12), it is characterized in that: described loader hydraulic control system also comprises flow divider-combiner (2), pressure selection valve (4), steering pump (5), flux amplification valve (6), pilot valve (9), banked direction control valves (10);
Described flow divider-combiner (2) is connected with working barrel (1), hydraulic oil container (3), flux amplification valve (6), banked direction control valves (10) respectively by hydraulic circuit;
Described working barrel (1) is connected with hydraulic oil container (3), steering gear (8) respectively by hydraulic circuit;
Described pressure selection valve (4) is connected with steering gear (8), pilot valve (9), banked direction control valves (10) respectively by hydraulic circuit;
Described flux amplification valve (6) is connected with steering cylinder (7) by hydraulic circuit;
Described banked direction control valves (10) is connected with boom cylinder (11), rotary ink tank (12) respectively by hydraulic circuit.
2. loader hydraulic control system according to claim 1, it is characterized in that: the P mouth of described flow divider-combiner (2) is connected with the PF oil-out of flux amplification valve by hydraulic circuit, hydraulic fluid port B is connected with the oil-out of working barrel (1) by hydraulic circuit, and A mouth is connected with banked direction control valves (10) by hydraulic circuit.
3. loader hydraulic control system according to claim 1 and 2, it is characterized in that: the 1b mouth of described pilot valve (9) is connected with the b1 mouth of banked direction control valves (10), the b1 mouth of flow divider-combiner (2) respectively by hydraulic circuit, the 1a mouth of pilot valve (9) is connected the a1 mouth of banked direction control valves (10) and the a1 mouth of flow divider-combiner (2) by hydraulic circuit.
4. loader hydraulic control system according to claim 3, is characterized in that: described steering gear (8) adopts load sensing all-hydraulic steering gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420230368.2U CN203924195U (en) | 2014-05-07 | 2014-05-07 | Loader hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420230368.2U CN203924195U (en) | 2014-05-07 | 2014-05-07 | Loader hydraulic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203924195U true CN203924195U (en) | 2014-11-05 |
Family
ID=51820048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420230368.2U Expired - Fee Related CN203924195U (en) | 2014-05-07 | 2014-05-07 | Loader hydraulic control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203924195U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104405006A (en) * | 2014-12-16 | 2015-03-11 | 派克汉尼汾流体传动产品（上海）有限公司 | Loading machine hemi-variate hydraulic system |
| CN110566532A (en) * | 2019-09-20 | 2019-12-13 | 广西玉柴重工有限公司 | Multi-way valve is suitable for and widens device |
| CN114688115A (en) * | 2022-06-02 | 2022-07-01 | 徐工集团工程机械股份有限公司科技分公司 | Compound action control hydraulic system and method for loader |
| CN114855922A (en) * | 2022-05-27 | 2022-08-05 | 徐工集团工程机械股份有限公司科技分公司 | An energy-saving electric loader hydraulic system and electric loader |
-
2014
- 2014-05-07 CN CN201420230368.2U patent/CN203924195U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103993622B (en) * | 2014-05-07 | 2016-04-20 | 山东临工工程机械有限公司 | Loader hydraulic control system |
| CN104405006A (en) * | 2014-12-16 | 2015-03-11 | 派克汉尼汾流体传动产品（上海）有限公司 | Loading machine hemi-variate hydraulic system |
| CN104405006B (en) * | 2014-12-16 | 2016-09-07 | 派克汉尼汾流体传动产品（上海）有限公司 | Loading machine semi-variety hydraulic system |
| CN110566532A (en) * | 2019-09-20 | 2019-12-13 | 广西玉柴重工有限公司 | Multi-way valve is suitable for and widens device |
| CN114855922A (en) * | 2022-05-27 | 2022-08-05 | 徐工集团工程机械股份有限公司科技分公司 | An energy-saving electric loader hydraulic system and electric loader |
| CN114855922B (en) * | 2022-05-27 | 2022-12-13 | 徐工集团工程机械股份有限公司科技分公司 | An energy-saving electric loader hydraulic system and electric loader |
| CN114688115A (en) * | 2022-06-02 | 2022-07-01 | 徐工集团工程机械股份有限公司科技分公司 | Compound action control hydraulic system and method for loader |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20160507 |