CN203496983U - Emergency steering apparatus of grader - Google Patents
Emergency steering apparatus of grader Download PDFInfo
- Publication number
- CN203496983U CN203496983U CN201320577536.0U CN201320577536U CN203496983U CN 203496983 U CN203496983 U CN 203496983U CN 201320577536 U CN201320577536 U CN 201320577536U CN 203496983 U CN203496983 U CN 203496983U
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- China
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- steering
- valve
- pump
- pressure
- emergency
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- Expired - Fee Related
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Abstract
The utility model discloses an emergency steering apparatus of a grader, and belongs to the field of grader technology. The apparatus is mainly used for emergency steering of the grader in an emergency condition. The apparatus comprises a steering oil cylinder, a steering gear, a priority valve and a working steering pump, wherein the steering oil cylinder, the steering gear, the priority valve and the working steering pump are successively connected via hydraulic pipelines; a second one-way valve and a third one-way valve are respectively mounted on two hydraulic pipelines between the steering gear and the priority valve; a pressure switch is arranged on the a hydraulic pipeline between the priority valve and the working steering pump; a first one-way valve connected with the second one-way valve and the steering gear via a hydraulic pipeline is connected with the hydraulic pipeline between the second one-way valve and the steering; the first one-way valve is connected with an overflow valve and an emergency steering gear pump via a hydraulic pipeline, wherein the overflow valve is parallelly connected with the emergency steering gear pump; and the emergency steering gear pump is connected with a direct current motor. According to the utility model, a problem is resolved that in the prior art, potential safety hazards exist when a grader fails to perform emergency steering in an emergency condition.
Description
Technical field
The utility model belongs to road grader technical field, specifically, relates in particular to the emergent steering hardware of a kind of road grader.
Background technology
The road grader using at present is mainly realized turning to and the function such as crab row of road grader by front-wheel steering and hinged fluid-link steering, and in normal work and driving process, road grader is mainly realized the front-wheel steering of road grader by front-wheel steering hydraulic efficiency pressure system.But when running into special emergency, as road grader in run at high speed or service condition under occur turning to working barrel damage to lose efficacy, pressure-gradient control valve lost efficacy can not service condition etc. situation, only depend on manpower realize emergent turn to very difficult.So existence In view of the foregoing, there is certain defect in existing road grader steering hardware, and these defects easily make road grader when emergency situation, have certain potential safety hazard.
Summary of the invention
The purpose of this utility model is to provide a kind of road grader steering hardware of meeting an urgent need, thereby turns to the problem that has potential safety hazard in order to solve the road grader that exists in prior art meeting with in emergency circumstances cannot meet an urgent need.
The utility model is achieved through the following technical solutions:
A kind of road grader steering hardware of meeting an urgent need, comprise the steering cylinder, deflector, pressure-gradient control valve, the work steering pump that by conduit under fluid pressure, connect successively, on two conduit under fluid pressures between described deflector and pressure-gradient control valve, be separately installed with check valve second and check valve the third, on the conduit under fluid pressure between pressure-gradient control valve and work steering pump, be provided with pressure switch; On conduit under fluid pressure between described check valve second and deflector, be connected to the check valve first being connected by conduit under fluid pressure, check valve first is connected to by pass valve parallel with one another, emergent steering gear pump by conduit under fluid pressure, and described emergent steering gear pump is connected with DC machine.
Compared with prior art, the utlity model has following beneficial effect:
1, the utility model can be realized original steering swivel system function under the state of the normal work of road grader, can in case of emergency provide again the emergent of front-wheel to turn to, and then improves the safety of the manipulation of road grader, reduces the potential safety hazard existing;
2, the utility model can improve on original steering hardware, only need to increase emergent steering module and can realize road grader turning in case of emergency, and improving cost is lower, is suitable for promoting the use of.
Accompanying drawing explanation
Fig. 1 is the hydraulic schematic diagram of former road grader steering hardware;
Fig. 2 is hydraulic schematic diagram of the present utility model.
In figure: 1, by pass valve; 2, emergent steering gear pump; 3, check valve first; 4, DC machine; 5, check valve second; 6, steering cylinder; 7, deflector; 8, check valve third; 9, pressure-gradient control valve; 10, pressure switch; 11, work steering pump.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 2, the utility model comprises steering cylinder 6, deflector 7, pressure-gradient control valve 9, the work steering pump 11 connecting successively by conduit under fluid pressure, on two conduit under fluid pressures between described deflector 7 and pressure-gradient control valve 9, be separately installed with check valve second 5 and check valve the third 8, on the conduit under fluid pressure between pressure-gradient control valve 9 and work steering pump 11, be provided with pressure switch 10; On conduit under fluid pressure between described check valve second 5 and deflector 7, be connected to the check valve first 3 being connected by conduit under fluid pressure, check valve first 3 is connected to by pass valve parallel with one another 1, emergent steering gear pump 2 by conduit under fluid pressure, and described emergent steering gear pump 2 is connected with DC machine 4.
DC machine 4 described in the utility model is connected with road grader entire automobile electric system, by entire automobile electric system, according to the state of change speed gear box bar handle and pressure switch 10, is controlled the startup of DC machine 4 and closes.
Under the state of work steering pump 11 inefficacy cisco unity malfunctions, according to entire automobile electric system, detect change speed gear box bar handle whether under vacant state, the emergent steering hardware of road grader can be divided into two kinds of course of action below:
Under the state of work steering pump 11 inefficacy cisco unity malfunctions, work steering pump 11 can not provide to the output of work steering swivel system the hydraulic oil of pressure, now pressure switch 10 detects steering swivel system pressure lower than a certain value, if entire automobile electric system detects change speed gear box bar handle when room simultaneously, entire automobile electric system control DC machine 4 must not be electric, and now emergent steering swivel system is not worked.
When work steering pump 11 inefficacy cisco unity malfunction, work steering pump 11 can not provide hydraulic oil to work steering swivel system, the pressure that now pressure switch 10 detects steering swivel system is lower than a certain value, if simultaneously entire automobile electric system detects engine running and change speed gear box handle not in room, when advancing or retreat gear, now entire automobile electric system control DC machine 4 obtains electric, DC machine 4 drives emergent steering gear pump 2 work pressure oil output, the pressure size of emergent steering pump 2 outputs of by pass valve 1 restriction, pressure oil output provides pressure oil through check valve 3 to deflector 7, when handling deflector 7, thereby can control emergent the turning to that steering cylinder 6 is realized in emergency circumstances, improve complete machine handling safety, when check valve 5 and check valve 8 are used for preventing emergent turning to, steering hydraulic oil is by pressure-gradient control valve 9 oil sump tanks.The utility model can improve on existing road grader steering hardware, is not affecting the safe reliability of handling to improve complete machine in the situation that user using.
Claims (1)
1. the emergent steering hardware of a road grader, comprise the steering cylinder (6), deflector (7), pressure-gradient control valve (9), the work steering pump (11) that by conduit under fluid pressure, connect successively, it is characterized in that: on two conduit under fluid pressures between described deflector (7) and pressure-gradient control valve (9), be separately installed with check valve second (5) and check valve third (8), on the conduit under fluid pressure between pressure-gradient control valve (9) and work steering pump (11), be provided with pressure switch (10); On conduit under fluid pressure between described check valve second (5) and deflector (7), be connected to the check valve first (3) being connected by conduit under fluid pressure, check valve first (3) is connected to by pass valve parallel with one another (1), emergent steering gear pump (2) by conduit under fluid pressure, and described emergent steering gear pump (2) is connected with DC machine (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320577536.0U CN203496983U (en) | 2013-09-18 | 2013-09-18 | Emergency steering apparatus of grader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320577536.0U CN203496983U (en) | 2013-09-18 | 2013-09-18 | Emergency steering apparatus of grader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203496983U true CN203496983U (en) | 2014-03-26 |
Family
ID=50327982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320577536.0U Expired - Fee Related CN203496983U (en) | 2013-09-18 | 2013-09-18 | Emergency steering apparatus of grader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203496983U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129428A (en) * | 2014-07-23 | 2014-11-05 | 徐州重型机械有限公司 | Emergency steering control system and method |
| CN110091916A (en) * | 2019-05-27 | 2019-08-06 | 徐工集团工程机械股份有限公司科技分公司 | A kind of engineering machinery emergency steering system |
-
2013
- 2013-09-18 CN CN201320577536.0U patent/CN203496983U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129428A (en) * | 2014-07-23 | 2014-11-05 | 徐州重型机械有限公司 | Emergency steering control system and method |
| CN104129428B (en) * | 2014-07-23 | 2017-05-03 | 徐州重型机械有限公司 | Emergency steering control system and method |
| CN110091916A (en) * | 2019-05-27 | 2019-08-06 | 徐工集团工程机械股份有限公司科技分公司 | A kind of engineering machinery emergency steering system |
| CN110091916B (en) * | 2019-05-27 | 2023-08-15 | 徐工集团工程机械股份有限公司科技分公司 | Emergency steering system of engineering machinery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20170918 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |