CN102826118A - Front wheel steering hydraulic system for land scraper with composite operation and land scraper - Google Patents
Front wheel steering hydraulic system for land scraper with composite operation and land scraper Download PDFInfo
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- CN102826118A CN102826118A CN2012102992604A CN201210299260A CN102826118A CN 102826118 A CN102826118 A CN 102826118A CN 2012102992604 A CN2012102992604 A CN 2012102992604A CN 201210299260 A CN201210299260 A CN 201210299260A CN 102826118 A CN102826118 A CN 102826118A
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- 239000002131 composite material Substances 0.000 title abstract 2
- 239000000203 mixture Substances 0.000 claims description 16
- 230000002457 bidirectional effect Effects 0.000 claims description 11
- 230000007246 mechanism Effects 0.000 abstract description 6
- 238000007790 scraping Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- 230000009977 dual effect Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The invention provides a front wheel steering hydraulic system for a land scraper with composite operation. The front wheel steering hydraulic system comprises a steering wheel steering system which is used for controlling a steering cylinder, a handle control steering system, a pressure-gradient control valve and a steering pump, wherein pressure oil is introduced into the steering pump from the outside; the pressure-gradient control valve is used for controlling the pressure oil to flow into the steering wheel steering system or the handle control steering system; the steering wheel steering system comprises a steering wheel and a full-hydraulic steering gear; the handle control steering system comprises a hydraulic pilot handle, a pilot battery valve and a hydraulic control reserving valve; and the pilot battery valve is arranged on an oil way between the hydraulic pilot handle and the hydraulic reversing valve. The front wheel steering movement of the land scraper is controlled by adopting two modes, and is controlled by the steering wheel at high speed. The front wheel steering hydraulic system for the land scraper is simple and convenient, safe and reliable, can be used for controlling the land scraper with a control handle of a working mechanism in low-speed scraping operation, so that the number of control handles required by operators can be reduced, and the operation efficiency can be improved.
Description
Technical field
The present invention relates to technical field of engineering machinery, relate in particular to a kind of road grader front-wheel steering hydraulic efficiency pressure system of composition operation and use the road grader of this system.
Background technology
Road grader front-wheel steering action promotes steering swivel through hydraulic ram and rotates and realize that the hydraulic actuating cylinder that promotes to rotate is referred to as to turn to oil cylinder, generally handles all-hydraulic steering gear by the bearing circle in the operator's compartment and controls and turn to cylinder action.The steering swivel system work that this bearing circle is handled is sensitive, and easy operation is directly perceived, and is safe and reliable.In the high speed transition driving cycle of road grader, chaufeur need not controlled the operating mechanism of machine, and only need control the moving velocity and the direction of machine, is fit to the action of bearing circle control front-wheel steering.
And when road grader carried out smooth operation, chaufeur also need be controlled operating mechanism's location status of machine except the moving velocity and direction of control machine.In order to obtain higher work efficiency, the operator needs the frequent position that two to three handles go to adjusting work mechanism of handling, and this just needs the operator between bearing circle and a plurality of bar handle, not stop the conversion manipulation.Operation easier is bigger, and labour intensity is higher.
As publication number be the Chinese invention patent name of 202077356U be called " a kind of road grader dual rotation hydraulic efficiency pressure system " disclose " a kind of road grader dual rotation hydraulic efficiency pressure system; the dual rotation hydraulic efficiency pressure system comprises wheel steering system and handle control steering swivel system; between wheel steering system and handle control steering swivel system preferential control cock is housed, by preferential control cock to realizing two kinds of controls of Vehicular turn; Handle control steering swivel system has handle, controller, steering control valve to turn to oil cylinder control, and the wheel steering control system has all-hydraulic steering gear, and all-hydraulic steering gear turns to the real-time control of oil cylinder through preferential control cock.”
Though this application file also can be realized two kinds of systems the road grader front-wheel is controlled; But this technical scheme adopts electronic control technology; And the control handle that adopts is electric ratio handle, and the change-over valve of employing also is electric proportional reversing valve, and the lever operated feel of electric ratio is very light; The application of force gently just can move whole electric ratio handle; And our road grader needs high-precision move operation when grading operation, and therefore adopting electric ratiometric mode is inappropriate in the operating system of whole road grader, and; Original hydraulic efficiency pressure system does not have some safety measures to the maloperation of whole oil circuit, if the safety that the entanglement of oil circuit will have a strong impact on machine takes place.
Summary of the invention
Technical matters to be solved by this invention provide a kind of simple in structure, easy to operate, and can control the road grader front-wheel steering hydraulic efficiency pressure system of the front-wheel steering of road grader, safe and reliable, composition operation that efficient is high and use the road grader of this system with dual mode.
In order to solve the problems of the technologies described above; The present invention provides a kind of road grader front-wheel steering hydraulic efficiency pressure system of composition operation; Comprise the wheel steering system and the handle control steering swivel system that turn to oil cylinder to control to the road grader front-wheel; Also comprise pressure-gradient control valve and steering pump, said steering pump is introduced pressure oil from the external world, pressure-gradient control valve control presssure oil inflow direction dish steering swivel system or handle control steering swivel system; Said wheel steering system comprises bearing circle and all-hydraulic steering gear; All-hydraulic steering gear is controlled by bearing circle, and handle control steering swivel system comprises hydraulic pilot handle, guide's battery valve and pilot operated directional control valve, and said guide's battery valve is arranged on the oil circuit between hydraulic pilot handle and the pilot operated directional control valve.
For strengthening the stability of total system, the present invention improves to be had, and the road grader front-wheel steering hydraulic efficiency pressure system of said composition operation also comprises controller, also is provided with electric button on said guide's handle, and electric button is through controller control guide battery valve.
For guaranteeing that the wheel steering device has preceence to the handling maneuver of machine, the present invention improves to be had, and said handle control steering swivel system is provided with bidirectional hydraulic lock, and said bidirectional hydraulic lock is arranged on pilot operated directional control valve and turns between the oil cylinder.
The present invention further provides a kind of road grader; Comprise that turn to oil cylinder and control to the control front-wheel turn to the road grader front-wheel steering hydraulic efficiency pressure system of the composition operation of oil cylinder; The road grader front-wheel steering hydraulic efficiency pressure system of said composition operation comprises the wheel steering system and the handle control steering swivel system that turn to oil cylinder to control to the road grader front-wheel; Also comprise pressure-gradient control valve and steering pump, said steering pump is introduced pressure oil from the external world, pressure-gradient control valve control presssure oil inflow direction dish steering swivel system or handle control steering swivel system; Said wheel steering system comprises bearing circle and all-hydraulic steering gear; All-hydraulic steering gear is controlled by bearing circle, and handle control steering swivel system comprises hydraulic pilot handle, guide's battery valve and pilot operated directional control valve, and said guide's battery valve is arranged on the oil circuit between hydraulic pilot handle and the pilot operated directional control valve.
The present invention improves to be had, and said road grader also comprises controller, also is provided with electric button on said guide's handle, and electric button is through controller control guide battery valve.
The present invention improves to be had, and said handle control steering swivel system is provided with bidirectional hydraulic lock, and said bidirectional hydraulic lock is arranged on pilot operated directional control valve and turns between the oil cylinder.
Beneficial effect of the present invention is: through the road grader front-wheel steering hydraulic efficiency pressure system of later-model composition operation, adopt the motion of dual mode control road grader front-wheel steering, direction of passage dish control during high speed; Simple and convenient; Safe and reliable, and when low speed is wipeed operation off, then control with the control handle of operating mechanism; Reduce the handle quantity that operating personal need be controlled, improve operating efficiency.
Concrete, what adopt among the present invention is the hydraulic pilot control technology, control handle is the hydraulic pilot control handle; Main reversing valve is the hydraulic control apportioning valve, and the maloperation of adopting frontier technology can actv. to place whole oil circuit has guaranteed the safety of whole oil circuit; On the other hand; Adopt frontier technology, make that the operation of The whole control handle is more stable, the work that when grading operation, can move accurately is to each details position.
Description of drawings
Accompanying drawing 1 is depicted as the scheme drawing of the road grader front-wheel steering hydraulic efficiency pressure system of composition operation of the present invention.
Label declaration: 1-turns to oil cylinder; The 2-pressure-gradient control valve; The 3-steering pump; The 4-bearing circle; The 5-all-hydraulic steering gear; 6-hydraulic pilot handle; 7-guide's battery valve; The 8-pilot operated directional control valve; The 9-bidirectional hydraulic lock; The 10-controller.
The specific embodiment
By specifying technology contents of the present invention, structural attitude, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.
See also Fig. 1; The road grader front-wheel steering hydraulic efficiency pressure system of a kind of composition operation of the present invention; Comprise bearing circle 4 steering swivel systems and the handle control steering swivel system that turn to oil cylinder 1 to control to the road grader front-wheel; Also comprise pressure-gradient control valve 2 and steering pump 3, said steering pump 3 is introduced pressure oil from the external world, pressure-gradient control valve 2 control presssures oil inflow direction dish 4 steering swivel systems or handle control steering swivel system; Said wheel steering system comprises bearing circle 4, all-hydraulic steering gear 5 and corresponding pipeline and joint etc.; All-hydraulic steering gear 5 is by bearing circle 4 controls, and handle control steering swivel system comprises hydraulic pilot handle 6, guide's battery valve 7, pilot operated directional control valve 8 and corresponding pipeline, joint etc., and said guide's battery valve 7 is arranged on the oil circuit between hydraulic pilot handle 6 and the pilot operated directional control valve 8.
General traditional road grader all is only to have the wheel steering system; Technical scheme of the present invention has been added handle control steering swivel system on this basis; Corresponding hydraulic circuit is controlled in the operation of direction of passage dish 4 and hydraulic pilot handle 6, can control the front-wheel steering of road grader.
Wherein, the pressure oil of wheel steering system and handle control steering swivel system is next to same steering pump, and through the order of pressure-gradient control valve 2 its actions of control, the action of final output is passed to and turns to oil cylinder 1, controls turning to of road grader.
Hydraulic pilot handle 6 control pilot pressure oil get into pilot operated directional control valve 8 from different directions and promote the valve bodies switching-over, thereby control steering pressure oil gets into from different directions and turns to oil cylinder 1, promotes machine and does handling maneuver; On the oil circuit between hydraulic pilot handle 6 and the pilot operated directional control valve 8, guide's battery valve 7 is installed, through control guide battery valve 7 whether electricly can cut off or connect pilot pressure oil circuit hydraulic pressure, concrete; In the present embodiment, handle control steering swivel system also is provided with controller 10, also is provided with electric button on said guide's handle; The signal of electric button through controller 10 go to control guide's battery valve 7 whether electric, controller 10 can also receive the signal of machine gearbox control system, can be according to the needs of operating mode; When top gear, cut off the control of handle, make handle turn to function temporarily to lose efficacy, adopt hydraulic pilot handle 6 to come operating handle good guide's battery valve 7; And its control is highly sensitive; The more important thing is, guaranteed the accurate and safety of the operation of whole hydraulic pilot handle 6, as long as controller 10 does not send signal; Pilot solenoid valve 7 just can conducting, and guide oil just can not arrive pilot operated directional control valve 8.
In the present embodiment, said handle control steering swivel system is provided with bidirectional hydraulic lock 9, and said bidirectional hydraulic lock 9 is arranged on pilot operated directional control valve 8 and turns between the oil cylinder 1.
Pressure-gradient control valve 2 in the system and bidirectional hydraulic lock 9 all are for the deflector that guarantees bearing circle 4 controls the handling maneuver of machine to be had preferential control;
The concrete mode of operation of the road grader front-wheel steering hydraulic efficiency pressure system of the composition operation in the present embodiment is following; At first steering pump 3 entrys into service, the power of its steering pump 3 can be provided by electrical generator, and pressure oil output arrives pressure-gradient control valve 2; If at this moment bearing circle 4 turns to control action; Then pressure-gradient control valve 2 can turn to oil cylinder 1 to pressure oil input all-hydraulic steering gear 5 through the entering of the pressure oil behind the all-hydraulic steering gear 5, and the rotation of adaptive deflector promotes machine and does handling maneuver;
If deflector is action not; Then pressure-gradient control valve 2 can be passed to pilot operated directional control valve 8 to pressure oil, distributes to other operating mechanisms as required by pilot operated directional control valve 8, and road grader is when running at high speed; Adopt the handling maneuver of bearing circle 4 control machines, guarantee the safety performance that machine goes.
Carry out low speed (one, two, third gear) when wipeing operation off at road grader, the tractor driver generally need not control bearing circle 4, and at this moment pressure oil is defeated by pilot operated directional control valve 8 through pressure-gradient control valve 2; Can be through handling swinging and pushing electric button and realize the control that turns to of guide's handle to machine; Concrete implementation procedure does, the swinging of guide's handle can be controlled pilot pressure and flow to guide's battery valve 7 from certain direction, and controller 10 is behind the signal that receives electric button output; Can be to guide's battery valve 7 outgoing currents; Guide's battery valve 7 oil circuits are connected, be incorporated into pilot operated directional control valve 8, promote its spool switching-over thereby control oil to the guide; Thereby steering pressure oil outputed to turn to oil cylinder 1, realize turning to of machine.The program of controller 10 can guarantee when running at high speed (five grades more than the speed); Controller 10 can not send signal to guide's battery valve 7; Guide's battery valve 7 not conductings like this; Guide oil can not arrive pilot operated directional control valve 8, even handle has misoperation also can not have influence on the travel direction of machine like this, guarantees safety performance.
Under any circumstance, if bearing circle 4 has handling maneuver, pressure-gradient control valve 2 all can in time commutate, and cuts off the fuel feeding to pilot operated directional control valve 8, supplies with deflector to steering oil and removes to promote oil cylinder realization handling maneuver, realizes the preferential control of 4 pairs of handling maneuvers of bearing circle.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes specification sheets of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (6)
1. the road grader front-wheel steering hydraulic efficiency pressure system of a composition operation; Comprise the wheel steering system and the handle control steering swivel system that turn to oil cylinder to control to the road grader front-wheel; Also comprise pressure-gradient control valve and steering pump, said steering pump is introduced pressure oil from the external world, pressure-gradient control valve control presssure oil inflow direction dish steering swivel system or handle control steering swivel system; Said wheel steering system comprises bearing circle and all-hydraulic steering gear; All-hydraulic steering gear is controlled by bearing circle, and handle control steering swivel system comprises hydraulic pilot handle, guide's battery valve and pilot operated directional control valve, and said guide's battery valve is arranged on the oil circuit between hydraulic pilot handle and the pilot operated directional control valve.
2. the road grader front-wheel steering hydraulic efficiency pressure system of composition operation according to claim 1 is characterized in that, also comprises controller, also is provided with electric button on said guide's handle, and electric button is through controller control guide battery valve.
3. the road grader front-wheel steering hydraulic efficiency pressure system of composition operation according to claim 1 is characterized in that, said handle control steering swivel system is provided with bidirectional hydraulic lock, and said bidirectional hydraulic lock is arranged on pilot operated directional control valve and turns between the oil cylinder.
4. road grader; It is characterized in that; Comprise that turn to oil cylinder and control to the control front-wheel turn to the road grader front-wheel steering hydraulic efficiency pressure system of the composition operation of oil cylinder, the road grader front-wheel steering hydraulic efficiency pressure system of said composition operation comprises the wheel steering system and the handle control steering swivel system that turn to oil cylinder to control to the road grader front-wheel, also comprises pressure-gradient control valve and steering pump; Said steering pump is introduced pressure oil from the external world; Pressure-gradient control valve control presssure oil inflow direction dish steering swivel system or handle control steering swivel system, said wheel steering system comprises bearing circle and all-hydraulic steering gear, all-hydraulic steering gear is controlled by bearing circle; Handle control steering swivel system comprises hydraulic pilot handle, guide's battery valve and pilot operated directional control valve, and said guide's battery valve is arranged on the oil circuit between hydraulic pilot handle and the pilot operated directional control valve.
5. road grader according to claim 4 is characterized in that, also comprises controller, also is provided with electric button on said guide's handle, and electric button is through controller control guide battery valve.
6. road grader according to claim 4 is characterized in that, said handle control steering swivel system is provided with bidirectional hydraulic lock, and said bidirectional hydraulic lock is arranged on pilot operated directional control valve and turns between the oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102992604A CN102826118A (en) | 2012-08-21 | 2012-08-21 | Front wheel steering hydraulic system for land scraper with composite operation and land scraper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102992604A CN102826118A (en) | 2012-08-21 | 2012-08-21 | Front wheel steering hydraulic system for land scraper with composite operation and land scraper |
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| CN102826118A true CN102826118A (en) | 2012-12-19 |
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| CN2012102992604A Pending CN102826118A (en) | 2012-08-21 | 2012-08-21 | Front wheel steering hydraulic system for land scraper with composite operation and land scraper |
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| CN (1) | CN102826118A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104521424A (en) * | 2015-01-05 | 2015-04-22 | 梁军 | Slope corn harvester |
| CN106184358A (en) * | 2016-08-25 | 2016-12-07 | 山东黄金矿业(莱州)有限公司三山岛金矿 | The integrated hydraulic system that a kind of Underground Mine truck operation turns to and brakes |
| CN106347451A (en) * | 2016-11-25 | 2017-01-25 | 南京英达公路养护车制造有限公司 | Hydraulic control system for engineering machine walking and steering |
| CN106741164A (en) * | 2016-11-29 | 2017-05-31 | 徐州徐工筑路机械有限公司 | A kind of cold regenerative machine electronic steering control system |
| CN108016493A (en) * | 2017-11-29 | 2018-05-11 | 山东蓬翔汽车有限公司 | A kind of steering of wide dumper |
| CN108951736A (en) * | 2018-08-07 | 2018-12-07 | 山推工程机械股份有限公司 | A kind of land leveller steering system, land leveller and its rotating direction control method |
| CN112005685A (en) * | 2020-07-27 | 2020-12-01 | 农业农村部南京农业机械化研究所 | Hydraulic system of high-ground-clearance spraying machine |
| CN113844534A (en) * | 2020-06-27 | 2021-12-28 | 广东富华重工制造有限公司 | Engineering machinery steering control device and engineering machinery |
| CN115320687A (en) * | 2022-08-12 | 2022-11-11 | 国网山东省电力公司诸城市供电公司 | Electric power tool travelling bogie |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104521424B (en) * | 2015-01-05 | 2016-08-24 | 梁军 | Hillside fields corn picker |
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| CN106741164A (en) * | 2016-11-29 | 2017-05-31 | 徐州徐工筑路机械有限公司 | A kind of cold regenerative machine electronic steering control system |
| CN108016493B (en) * | 2017-11-29 | 2024-01-16 | 山东蓬翔汽车有限公司 | Steering system of wide dump truck |
| CN108016493A (en) * | 2017-11-29 | 2018-05-11 | 山东蓬翔汽车有限公司 | A kind of steering of wide dumper |
| CN108951736A (en) * | 2018-08-07 | 2018-12-07 | 山推工程机械股份有限公司 | A kind of land leveller steering system, land leveller and its rotating direction control method |
| CN108951736B (en) * | 2018-08-07 | 2023-11-03 | 山推工程机械股份有限公司 | Land leveler steering system, land leveler and steering control method thereof |
| CN113844534A (en) * | 2020-06-27 | 2021-12-28 | 广东富华重工制造有限公司 | Engineering machinery steering control device and engineering machinery |
| CN112005685B (en) * | 2020-07-27 | 2021-11-12 | 农业农村部南京农业机械化研究所 | A high ground clearance sprayer hydraulic system |
| CN112005685A (en) * | 2020-07-27 | 2020-12-01 | 农业农村部南京农业机械化研究所 | Hydraulic system of high-ground-clearance spraying machine |
| CN115320687A (en) * | 2022-08-12 | 2022-11-11 | 国网山东省电力公司诸城市供电公司 | Electric power tool travelling bogie |
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Application publication date: 20121219 |
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