CN202508146U - Loader hydraulic steering limiting device - Google Patents
Loader hydraulic steering limiting device Download PDFInfo
- Publication number
- CN202508146U CN202508146U CN2012201090054U CN201220109005U CN202508146U CN 202508146 U CN202508146 U CN 202508146U CN 2012201090054 U CN2012201090054 U CN 2012201090054U CN 201220109005 U CN201220109005 U CN 201220109005U CN 202508146 U CN202508146 U CN 202508146U
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- China
- Prior art keywords
- steering
- valve
- loader
- limiting
- vehicle frame
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a loader hydraulic steering limiting device. The loader hydraulic steering limiting device comprises a limiting block, a steering gear and a flow amplify valve. The limiting block is fixed on a front frame of the loader, the steering gear is communicated with a reducing valve and a steering limiting valve, the steering limiting valve is fixed on a rear frame of the loader and corresponds to the limiting block, and the flow amplify valve is respectively communicated with the steering limiting valve and a steering hydro-cylinder of the loader. The loader hydraulic steering limiting device effectively avoids impact to the steering hydro-cylinder, and prolongs service life of the steering hydro-cylinder.
Description
Technical field
The utility model relates to a kind of loader, especially relates to a kind of loader fluid-link steering inhibiting device.
Background technology
At present loader is widely used in engineering fields such as building, water conservancy, electric power, road, mine, harbour and national defence, China's economic construction high speed development, thus driven the stable development of loader.Loader comprise front vehicle frame and with the front vehicle frame pivotally attached after vehicle frame, front vehicle frame and back are hinged with between the vehicle frame and turn to oil cylinder, deflector to be communicated with reducing valve and left and right sides limiting steering valve.Loader at work; Can relatively rotate as required often between its front vehicle frame and the back vehicle frame; The steering oil cylinder piston rod is flexible to be needed during near end position spacingly, and the loader of prior art is that towing plate contacts spacing under towing plate place welded limiting piece under the vehicle frame of back and front vehicle frame.There is following defective in this structure: along with frequently turning to of loader, the welded limiting piece can deform because of frequent sharp impacts, and the welded limiting piece can not be adjusted, and causes steering angle to change, and it is impaired to turn to oil cylinder to be easy to.
The utility model content
The utility model technical matters to be solved is: a kind of loader fluid-link steering inhibiting device is provided, and actv. has avoided turning to oil cylinder to be impacted, and has prolonged the service life that turns to oil cylinder.
For solving the problems of the technologies described above, the technical scheme of the utility model is: loader fluid-link steering inhibiting device, comprise limiting stopper, and said limiting stopper is fixed on the front vehicle frame of said loader; Deflector, said deflector are communicated with reducing valve and limiting steering valve, and said limiting steering valve is fixed on the back vehicle frame of said loader and is corresponding with said limiting stopper; Flux amplification valve, said flux amplification valve respectively with said limiting steering valve and said loader turn to oil cylinder UNICOM.
Preferably, the quantity of said limiting stopper and limiting steering valve is two and is symmetrically arranged.
Preferably, said limiting stopper is to be movably arranged on the stop screw on the towing plate on the said front vehicle frame.Adopted technique scheme, the beneficial effect of the utility model is: because the back vehicle frame is provided with limiting steering valve corresponding with said limiting stopper and that be communicated with said deflector, said limiting steering valve is communicated with flux amplification valve; Said flux amplification valve respectively with said limiting steering valve and said loader turn to oil cylinder UNICOM, so when steering wheel rotation, deflector hydraulic oil at first gets into the limiting steering valve; Again through limiting steering valve guide dominant discharge amplifying valve, because the pressure of limiting steering valve has only 2.5Mpa, when redirecting to end position; Spacing valve rod contacts with stop screw, and the limiting steering valve cuts out, flow gain convertible valve draining; Thereby steering cylinder stops oil-feed; Actv. has avoided turning to the impact of oil cylinder, turns to oil cylinder thereby protected, and has prolonged the service life that turns to oil cylinder.
Because the quantity of said limiting stopper and limiting steering valve is two and is symmetrically arranged, so the spacing performance of this loader fluid-link steering inhibiting device is more stable.
Because said limiting stopper is to be movably arranged on the stop screw on the towing plate on the said front vehicle frame, thus when stop screw causes the position to change because of frequent contact, can adjust, simple and convenient.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the fundamental diagram of the utility model embodiment;
Wherein: 1, front vehicle frame; 2, back vehicle frame; 3, deflector; 6, reducing valve; 8, flux amplification valve; 41, left limit screw; 42, right limit screw; 51, left steering oil cylinder; 52, right steering oil cylinder; 71, left steering limit valve; 72, right steering limit valve.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Shown in Fig. 1 and Fig. 2 were common, loader fluid-link steering inhibiting device comprised: left limit piece, right limit piece, deflector 3, reducing valve 6, left steering limit valve 71, right steering limit valve 72 and flux amplification valve 8.
Above-mentioned left limit piece and right limit piece are left limit screw 41 and right limit screw 42, are convenient to trace and regulate.
Left limit screw 41 is fixed on the front vehicle frame 1 of loader with right limit screw 42; Deflector 3 is communicated with reducing valve 6, left steering limit valve 71 and right steering limit valve 72; Left steering limit valve 71 and right steering limit valve 72 are fixed on the back vehicle frame 2 of loader and are corresponding with left limit screw 41 and right limit screw 42, and flux amplification valve 8 is communicated with the left steering oil cylinder 51 and the right steering oil cylinder 52 of left steering limit valve 71, right steering limit valve 72 and loader respectively.
Its working process is following:
When steering wheel rotation; The hydraulic oil that gets into deflector 3 from reducing valve 6 at first gets into left steering limit valve 71 and right steering limit valve 72; Again through left steering limit valve 71 and right steering limit valve 72 guide's dominant discharge amplifying valves 8; Flux amplification valve 8 valve rods move, and oil pump comes oil to get into left steering oil cylinder 51 and right steering oil cylinder 52, thereby turns to about realizing.Because the pressure of left steering limit valve 71 and right steering limit valve 72 has only 2.5Mpa; When redirecting to end position; Left steering limit valve 71 and right steering limit valve 72 bars and left limit screw 41 and right limit screw 42 flexible contacts; Left steering limit valve 71 cuts out with right steering limit valve 72, flux amplification valve 8 working connection drainings, thus left steering oil cylinder 51 stops oil-feed with right steering oil cylinder 52; Actv. has been avoided the impact of left steering oil cylinder 51 and right steering oil cylinder 52, thereby has protected left steering oil cylinder 51 and right steering oil cylinder 52.When left limit screw 41 caused the position to change with right limit screw 42 because of frequently contacting, 42 suitable adjustment get final product with the right limit screw with left limit screw 41, and were convenient and swift.
The utility model is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done all drop within protection scope of the present invention.
Claims (3)
1. loader fluid-link steering inhibiting device is characterized in that, comprising:
Limiting stopper, said limiting stopper are fixed on the front vehicle frame of said loader;
Deflector, said deflector are communicated with reducing valve and limiting steering valve, and said limiting steering valve is fixed on the back vehicle frame of said loader and is corresponding with said limiting stopper;
Flux amplification valve, said flux amplification valve are communicated with the oil cylinder that turns to of said limiting steering valve and said loader respectively.
2. loader fluid-link steering inhibiting device as claimed in claim 1 is characterized in that the quantity of said limiting stopper and limiting steering valve is two and is symmetrically arranged.
3. loader fluid-link steering inhibiting device as claimed in claim 2 is characterized in that, said limiting stopper is to be movably arranged on the stop screw on the towing plate on the said front vehicle frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201090054U CN202508146U (en) | 2012-03-21 | 2012-03-21 | Loader hydraulic steering limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201090054U CN202508146U (en) | 2012-03-21 | 2012-03-21 | Loader hydraulic steering limiting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202508146U true CN202508146U (en) | 2012-10-31 |
Family
ID=47060646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201090054U Expired - Fee Related CN202508146U (en) | 2012-03-21 | 2012-03-21 | Loader hydraulic steering limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202508146U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102888866A (en) * | 2012-11-05 | 2013-01-23 | 中外合资沃得重工（中国）有限公司 | Hydraulic circuit capable of accurately controlling lifting height of movable arm of excavator |
| CN103029752A (en) * | 2012-12-26 | 2013-04-10 | 安徽铜冠机械股份有限公司 | Self-adjusting limit component |
| CN104029722A (en) * | 2014-01-23 | 2014-09-10 | 广西柳工机械股份有限公司 | Hydraulic steering system of engineering machine |
| CN107905288A (en) * | 2017-11-01 | 2018-04-13 | 广西柳工机械股份有限公司 | Loading machine double speed steering control system |
| CN110758555A (en) * | 2019-11-12 | 2020-02-07 | 广西柳工机械股份有限公司 | Loader steering cut-off system |
-
2012
- 2012-03-21 CN CN2012201090054U patent/CN202508146U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102888866A (en) * | 2012-11-05 | 2013-01-23 | 中外合资沃得重工（中国）有限公司 | Hydraulic circuit capable of accurately controlling lifting height of movable arm of excavator |
| CN103029752A (en) * | 2012-12-26 | 2013-04-10 | 安徽铜冠机械股份有限公司 | Self-adjusting limit component |
| CN103029752B (en) * | 2012-12-26 | 2015-04-08 | 安徽铜冠机械股份有限公司 | Self-adjusting limit component |
| CN104029722A (en) * | 2014-01-23 | 2014-09-10 | 广西柳工机械股份有限公司 | Hydraulic steering system of engineering machine |
| CN104029722B (en) * | 2014-01-23 | 2016-09-07 | 广西柳工机械股份有限公司 | Engineering machinery hydraulic steering |
| CN107905288A (en) * | 2017-11-01 | 2018-04-13 | 广西柳工机械股份有限公司 | Loading machine double speed steering control system |
| CN107905288B (en) * | 2017-11-01 | 2019-11-19 | 广西柳工机械股份有限公司 | Loading machine double speed steering control system |
| CN110758555A (en) * | 2019-11-12 | 2020-02-07 | 广西柳工机械股份有限公司 | Loader steering cut-off system |
| CN110758555B (en) * | 2019-11-12 | 2022-05-27 | 广西柳工机械股份有限公司 | Loader steering cut-off system |
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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: 20121031 Termination date: 20160321 |