CN105539580A - Hydraulic four-wheeled steering system suitable for high ground clearance and mechanical vehicle - Google Patents
Hydraulic four-wheeled steering system suitable for high ground clearance and mechanical vehicle Download PDFInfo
- Publication number
- CN105539580A CN105539580A CN201610047502.9A CN201610047502A CN105539580A CN 105539580 A CN105539580 A CN 105539580A CN 201610047502 A CN201610047502 A CN 201610047502A CN 105539580 A CN105539580 A CN 105539580A
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- oil cylinder
- rodless cavity
- wheel oil
- wheel
- front wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/0003—Atomisers or mist blowers
- A01M7/0014—Field atomisers, e.g. orchard atomisers, self-propelled, drawn or tractor-mounted
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Insects & Arthropods (AREA)
- Pest Control & Pesticides (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
The invention provides a hydraulic four-wheeled steering system suitable for a high ground clearance and a mechanical vehicle and belongs to the field of vehicle steering control. The hydraulic four-wheeled steering system mainly comprises a hydraulic pump, a hydraulic steering gear, an oil supplementing valve, a reversing valve, a left front wheel oil cylinder, a right front wheel oil cylinder, a left rear wheel oil cylinder and a right rear wheel oil cylinder, wherein the left front wheel oil cylinder, the right front wheel oil cylinder, the left rear wheel oil cylinder and the right rear wheel oil cylinder are connected to the oil supplementing valve and the reversing valve, a rodless cavity of the left front wheel oil cylinder is communicated with a rodless cavity of the right front wheel oil cylinder through a front oil supplementing pipe, and a rodless cavity of the left rear wheel oil cylinder is communicated with a rodless cavity of the right rear wheel oil cylinder through a rear oil supplementing pipe. The hydraulic four-wheeled steering system solves the problem that the design workload is large because an existing steering system for a mechanical vehicle with a high ground clearance relies on connecting rods, and the problems that overall arrangement of a machine with a high ground clearance is not easy and maintenance and debugging of the machine are complicated because the connecting rods are limited in height and position.
Description
technical field:
Of the present invention a kind of be applicable to high-clearance hydraulic pressure four-wheel steering system and motor vehicles and machines belong to Vehicular turn control field, particularly relate to a kind of hydraulic pressure four-wheel steering system being applicable to high-clearance.
background technology:
Steering swivel system many employings tie rod linkage of existing high-clearance machinery realizes turning to, four-wheel steering mode ensures the synchronism of wheel steering by connecting rod mechanism, connecting rod needs to determine according to the height, wheelspan width, wheelbase length, oil cylinder putting position etc. on chassis, design efforts would is large, and connecting rod has height and the restriction of position, be unfavorable for the layout of high-clearance machinery integral, complicated when safeguarding and debug mechanical; The four-wheel steering system of two-way cylinder composition, due to the restriction of vehicle type structure, cannot use in some particular surroundingss; The automatically controlled pattern steering swivel system of full scale valve block band angular transducer composition, cost is higher.
summary of the invention:
The object of the present invention is to provide a kind of a kind of hydraulic pressure four-wheel steering system and motor vehicles and machines being applicable to high-clearance that can ensure that without connecting rod four-wheel steering synchronism, layout are convenient and reliable, maintenance debugging is simple, with low cost.
A kind of hydraulic pressure four-wheel steering system being applicable to high-clearance, mainly comprise: Hydraulic Pump, hydraulic steering gear, Fill valve, change-over valve, and being connected to the near front wheel oil cylinder of Fill valve and change-over valve, off front wheel oil cylinder, left rear wheel oil cylinder and off hind wheel oil cylinder, described oil cylinder is connected with corresponding wheel respectively;
Described the near front wheel oil cylinder rodless cavity is connected by front repairing pipe with off front wheel oil cylinder rodless cavity, and left rear wheel oil cylinder rodless cavity is connected by rear repairing pipe with off hind wheel oil cylinder rodless cavity;
Described Fill valve is connected with described the near front wheel oil cylinder rodless cavity, off front wheel oil cylinder rodless cavity, left rear wheel oil cylinder rodless cavity and off hind wheel oil cylinder rodless cavity respectively;
Further described Fill valve is connected with front repairing pipe and rear repairing pipe respectively;
Described change-over valve is connected with described the near front wheel cylinder rod chamber, off front wheel cylinder rod chamber, left rear wheel cylinder rod chamber and off hind wheel cylinder rod chamber respectively;
Fill valve is provided with repairing electromagnetic valve, and change-over valve is provided with reversing solenoid valve;
Motor vehicles and machines of the present invention comprise the hydraulic pressure four-wheel steering system being applicable to high-clearance of the present invention; Further described motor vehicles and machines especially high-clearance sprayer.
Make the near front wheel oil cylinder and off front wheel oil cylinder be full of oil by Fill valve, drain air, according to the incompressible principle of fluid, make the rodless cavity of two oil cylinders be connected to a bi-directional expansion oil cylinder; In like manner, left rear wheel oil cylinder rodless cavity and off hind wheel oil cylinder rodless cavity also can form a two-way cylinder; When oil is entered deflector by pump, oil in deflector enters in the rod chamber of an oil cylinder by change-over valve, oil in rod chamber compression rodless cavity, oil enters in the rodless cavity of opposite side oil cylinder by front/rear repairing pipe, the motion of compression rod chamber, four oil cylinders control four wheels of motor vehicles and machines respectively, therefore complete the wheel steering of motor vehicles and machines;
Owing to carrying out technique scheme, motor vehicles and machines do not need connecting rod can realize the synchronism of four-wheel steering, and layout is convenient and reliable, maintenance debugging is simple, with low cost.
accompanying drawing illustrates:
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification sheets, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1: a kind of hydraulic pressure four-wheel steering system schematic diagram being applicable to high-clearance;
Legend: 1, Fill valve, 2, change-over valve, 3, the near front wheel oil cylinder, 4, front repairing pipe, 5, off front wheel oil cylinder, 6, deflector, 7, off hind wheel oil cylinder, 8, rear repairing pipe, 9, left rear wheel oil cylinder.
Detailed description of the invention
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Embodiment
As shown in Figure 1, a kind of hydraulic pressure four-wheel steering system being applicable to high-clearance, mainly comprise: Hydraulic Pump, hydraulic steering gear 6, Fill valve 1, change-over valve 2, and being connected to the near front wheel oil cylinder 3 of Fill valve 1 and change-over valve 2, off front wheel oil cylinder 5, left rear wheel oil cylinder 9 and off hind wheel oil cylinder 7, described four oil cylinders are connected with corresponding wheel respectively;
Described the near front wheel oil cylinder 3 rodless cavity is connected by front repairing pipe 4 with off front wheel oil cylinder 5 rodless cavity, and left rear wheel oil cylinder 9 rodless cavity is connected by rear repairing pipe 8 with off hind wheel oil cylinder 7 rodless cavity;
Described Fill valve 1 is connected with front repairing pipe 4 and rear repairing pipe 8 respectively;
Described change-over valve 2 is connected with described the near front wheel oil cylinder 3 rod chamber, off front wheel oil cylinder 5 rod chamber, left rear wheel oil cylinder 9 rod chamber and off hind wheel oil cylinder 7 rod chamber respectively;
Fill valve 1 is provided with repairing electromagnetic valve, and change-over valve 2 is provided with reversing solenoid valve;
Motor vehicles and machines of the present invention are comprise the high-clearance sprayer being applicable to the hydraulic pressure four-wheel steering system of high-clearance of the present invention.
Front-wheel steering principle:
When fluid enters deflector 6 by P mouth, by change-over valve 2 from the oil-feed of A1 hydraulic fluid port fuel-displaced a mouth, compression the near front wheel oil cylinder 3 rod chamber piston, extrude from b hydraulic fluid port after the compression of rodless cavity fluid, off front wheel oil cylinder 5 rodless cavity is entered through c hydraulic fluid port, rodless cavity fluid extruding rod chamber piston movement, completes counterclockwise motion;
In like manner pass through change-over valve 2 from the oil-feed of B1 hydraulic fluid port fuel-displaced d hydraulic fluid port, compression off front wheel oil cylinder 5 rod chamber piston, the compression of rodless cavity fluid extrudes from c hydraulic fluid port, enters the near front wheel oil cylinder 3 rodless cavity through b hydraulic fluid port, rodless cavity fluid extruding rod chamber piston movement, completes transhipment of turning right dynamic.
Rear-axle steering principle:
When fluid enters deflector 6 by P mouth, by change-over valve 2 from the oil-feed of A2 hydraulic fluid port fuel-displaced e mouth, compression left rear wheel oil cylinder 9 rod chamber piston, the compression of rodless cavity fluid extrudes from f hydraulic fluid port, off hind wheel oil cylinder 7 rodless cavity is entered through g hydraulic fluid port, rodless cavity fluid extruding rod chamber piston movement, completes counterclockwise motion;
In like manner pass through change-over valve 2 from the oil-feed of B2 hydraulic fluid port fuel-displaced h hydraulic fluid port, compression off hind wheel oil cylinder 7 rod chamber piston, the compression of rodless cavity fluid extrudes from g hydraulic fluid port, enters left rear wheel oil cylinder 9 rodless cavity through f hydraulic fluid port, rodless cavity fluid extruding rod chamber piston movement, completes transhipment of turning right dynamic.
Four-wheel steering principle:
When fluid enters deflector 6 by P mouth, by change-over valve 2 from the oil-feed of A1 hydraulic fluid port fuel-displaced a mouth, compression the near front wheel oil cylinder 3 rod chamber piston, the compression of rodless cavity fluid extrudes from b hydraulic fluid port, off front wheel oil cylinder 5 rodless cavity is entered through c hydraulic fluid port, rodless cavity fluid extruding rod chamber piston movement enters B1 hydraulic fluid port from d hydraulic fluid port is fuel-displaced, be communicated with A2 hydraulic fluid port by the B1 hydraulic fluid port of change-over valve 2, fluid enters from the e hydraulic fluid port of left rear wheel oil cylinder 9, compression left rear wheel rod chamber piston, the compression of rodless cavity fluid extrudes from f hydraulic fluid port, off hind wheel oil cylinder 7 rodless cavity is entered through g hydraulic fluid port, rodless cavity fluid extruding rod chamber piston movement, complete four-wheel counterclockwise motion,
With entering deflector 6 by P mouth by fluid, by change-over valve 2 from the oil-feed of B1 hydraulic fluid port fuel-displaced d mouth, compression off front wheel oil cylinder 5 rod chamber piston, the compression of rodless cavity fluid extrudes from c hydraulic fluid port, the near front wheel oil cylinder 3 rodless cavity is entered through c hydraulic fluid port, rodless cavity fluid extruding rod chamber piston movement enters A1 hydraulic fluid port from a hydraulic fluid port is fuel-displaced, be communicated with B2 hydraulic fluid port by the A1 hydraulic fluid port of change-over valve 2, fluid enters from the h hydraulic fluid port of off hind wheel oil cylinder 7, compression off hind wheel rod chamber piston, the compression of rodless cavity fluid extrudes from g hydraulic fluid port, left rear wheel oil cylinder 9 rodless cavity is entered through g hydraulic fluid port, rodless cavity fluid extruding rod chamber piston movement, complete four-wheel right turn movements.
Crab row steering principle:
When fluid enters deflector 6 by P mouth, by change-over valve 2 from the oil-feed of A1 hydraulic fluid port fuel-displaced a mouth, compression the near front wheel oil cylinder 3 rod chamber piston, the compression of rodless cavity fluid extrudes from b hydraulic fluid port, off front wheel oil cylinder 5 rodless cavity is entered through c hydraulic fluid port, rodless cavity fluid extruding rod chamber piston movement enters B1 hydraulic fluid port from d hydraulic fluid port is fuel-displaced, be communicated with B2 hydraulic fluid port by the B1 hydraulic fluid port of change-over valve 2, fluid enters from the h hydraulic fluid port of off hind wheel oil cylinder 7, the rod chamber piston of compression off hind wheel oil cylinder 7, the compression of rodless cavity fluid extrudes from g hydraulic fluid port, left rear wheel oil cylinder 9 rodless cavity is entered through f hydraulic fluid port, rodless cavity fluid extruding rod chamber piston movement, complete four-wheel crab row counterclockwise motion,
With entering deflector 6 by P mouth by fluid, by change-over valve 2 from the oil-feed of B1 hydraulic fluid port fuel-displaced d mouth, compression off front wheel oil cylinder 5 rod chamber piston, the compression of rodless cavity fluid extrudes from c hydraulic fluid port, the near front wheel oil cylinder 3 rodless cavity is entered through b hydraulic fluid port, rodless cavity fluid extruding rod chamber piston movement enters A1 hydraulic fluid port from a hydraulic fluid port is fuel-displaced, be communicated with A2 hydraulic fluid port by change-over valve A1 hydraulic fluid port, fluid enters from the e hydraulic fluid port of left rear wheel oil cylinder 9, the rod chamber piston of compression left rear wheel oil cylinder 9, the compression of rodless cavity fluid extrudes from f hydraulic fluid port, off hind wheel oil cylinder 7 rodless cavity is entered through g hydraulic fluid port, rodless cavity fluid extruding rod chamber piston movement, complete four-wheel crab row right turn movements.
Owing to implementing technique scheme, motor vehicles and machines do not need connecting rod can realize the synchronism of four-wheel steering, and layout is convenient and reliable, maintenance debugging is simple, with low cost.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. one kind is applicable to the hydraulic pressure four-wheel steering system of high-clearance, it is characterized in that: mainly comprise Hydraulic Pump, hydraulic steering gear, Fill valve, change-over valve, and be connected to the near front wheel oil cylinder of Fill valve and change-over valve, off front wheel oil cylinder, left rear wheel oil cylinder and off hind wheel oil cylinder, described oil cylinder is connected with corresponding wheel respectively, described the near front wheel oil cylinder rodless cavity is connected by front repairing pipe with off front wheel oil cylinder rodless cavity, and left rear wheel oil cylinder rodless cavity is connected by rear repairing pipe with off hind wheel oil cylinder rodless cavity.
2. a kind of hydraulic pressure four-wheel steering system being applicable to high-clearance according to claim 1, is characterized in that: described Fill valve is connected with described the near front wheel oil cylinder rodless cavity, off front wheel oil cylinder rodless cavity, left rear wheel oil cylinder rodless cavity and off hind wheel oil cylinder rodless cavity respectively.
3. a kind of hydraulic pressure four-wheel steering system being applicable to high-clearance according to claim 2, is characterized in that: described change-over valve is connected with described the near front wheel cylinder rod chamber, off front wheel cylinder rod chamber, left rear wheel cylinder rod chamber and off hind wheel cylinder rod chamber respectively.
4. a kind of hydraulic pressure four-wheel steering system being applicable to high-clearance according to claim 3, is characterized in that: described Fill valve is connected with front repairing pipe and rear repairing pipe respectively.
5. a kind of hydraulic pressure four-wheel steering system being applicable to high-clearance according to claim 4, is characterized in that: Fill valve is provided with repairing electromagnetic valve, and change-over valve is provided with reversing solenoid valve.
6. motor vehicles and machines, is characterized in that: described motor vehicles and machines comprise a kind of hydraulic pressure four-wheel steering system being applicable to high-clearance described in any one of claim 1-5.
7. motor vehicles and machines, is characterized in that: described motor vehicles and machines are for comprising the high-clearance sprayer being applicable to the hydraulic pressure four-wheel steering system of high-clearance described in any one of claim 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610047502.9A CN105539580A (en) | 2016-01-25 | 2016-01-25 | Hydraulic four-wheeled steering system suitable for high ground clearance and mechanical vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610047502.9A CN105539580A (en) | 2016-01-25 | 2016-01-25 | Hydraulic four-wheeled steering system suitable for high ground clearance and mechanical vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN105539580A true CN105539580A (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610047502.9A Pending CN105539580A (en) | 2016-01-25 | 2016-01-25 | Hydraulic four-wheeled steering system suitable for high ground clearance and mechanical vehicle |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1702007A (en) * | 2005-05-26 | 2005-11-30 | 江苏大学 | Separated steering device for vehicular four wheels and its control method |
| CN202153833U (en) * | 2011-05-27 | 2012-03-07 | 中国一拖集团有限公司 | Steering mechanism of plant protection machine |
| WO2014056169A1 (en) * | 2012-10-11 | 2014-04-17 | 中联重科股份有限公司 | Hydraulic power-assisted steering system and chassis of engineering vehicle |
| CN104309683A (en) * | 2014-09-22 | 2015-01-28 | 三一汽车起重机械有限公司 | Hydraulic steering system and wheel crane |
| CN204341185U (en) * | 2014-12-26 | 2015-05-20 | 中联重科股份有限公司 | Four-mode steering hydraulic control system and vehicle with same |
| CN205292781U (en) * | 2016-01-25 | 2016-06-08 | 一拖(新疆)东方红装备机械有限公司 | Hydraulic pressure four wheel steering system and machinery vehicle suitable for highland crack |
-
2016
- 2016-01-25 CN CN201610047502.9A patent/CN105539580A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1702007A (en) * | 2005-05-26 | 2005-11-30 | 江苏大学 | Separated steering device for vehicular four wheels and its control method |
| CN202153833U (en) * | 2011-05-27 | 2012-03-07 | 中国一拖集团有限公司 | Steering mechanism of plant protection machine |
| WO2014056169A1 (en) * | 2012-10-11 | 2014-04-17 | 中联重科股份有限公司 | Hydraulic power-assisted steering system and chassis of engineering vehicle |
| CN104309683A (en) * | 2014-09-22 | 2015-01-28 | 三一汽车起重机械有限公司 | Hydraulic steering system and wheel crane |
| CN204341185U (en) * | 2014-12-26 | 2015-05-20 | 中联重科股份有限公司 | Four-mode steering hydraulic control system and vehicle with same |
| CN205292781U (en) * | 2016-01-25 | 2016-06-08 | 一拖(新疆)东方红装备机械有限公司 | Hydraulic pressure four wheel steering system and machinery vehicle suitable for highland crack |
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Application publication date: 20160504 |
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