CN101157369A - Vehicle fluid pressure linkage steering apparatus - Google Patents
Vehicle fluid pressure linkage steering apparatus Download PDFInfo
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- CN101157369A CN101157369A CNA2007101683833A CN200710168383A CN101157369A CN 101157369 A CN101157369 A CN 101157369A CN A2007101683833 A CNA2007101683833 A CN A2007101683833A CN 200710168383 A CN200710168383 A CN 200710168383A CN 101157369 A CN101157369 A CN 101157369A
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- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
The invention relates to a vehicle hydraulic link steering device, which comprises a vehicle chassis and a front steering axle arranged on the vehicle chassis; the invention is characterized in that a link hydraulic cylinder, which is a hydraulic cylinder with a single piston rod, is arranged on one side of the front steering axle; one end of the link hydraulic cylinder is connected with the steering rocker arm of the front steering axle; the other side of a rear steering axle, corresponding to the link hydraulic cylinder, is provided with a link steering cylinder which is a hydraulic cylinder with a single piston rod; one end of the link steering cylinder is connected with the steering rocker arm of the rear steering axle; the cavity with a rod and the cavity without a rod of the link hydraulic cylinder are communicated with the cavity with a rod and the cavity without a rod of the link steering cylinder by pipelines to form a loop in which two cylinders and two cavities are communicated in a closed way; with simple structure and reliable performance, the invention is convenient to be assembled and maintained; the invention can improve the operating and the steering performances of a heavy truck with a multi-axle structure and reduce the operating force of the steering; moreover, the invention also can reduce the driving resistance of vehicles and alleviate the wear of the tyres of multi-axle vehicles, thereby reducing the using cost of the vehicles.
Description
Technical field
The present invention relates to a kind of vehicle steering device, particularly the fluid pressure linkage steering apparatus of heavy motor vehicle multi-axle steering system.
Background technology
Autotruck generally need be realized by the quantity that increases vehicle bridge in order to increase its load carrying ability.Increase vehicle bridge and will increase wheel more, the resistance to motion increase of automobile that wheel is many, Tyte Wear aggravation, the oil consumption of automobile become big.
Twin shaft was as steeraxle before existing autotruck was general, and back axle and back doube bridge are as non-steering drive axle, and preceding dual rotation bridge mostly adopts comparative maturity and traditional mechanical type interlock mode, and technology maturation is reliable.In order to increase the specified load capacity of autotruck, the vehicle of back three bridges is set or more the multi-shaft vehicle is more and more, and mostly is non-steering axle greatly.Be the abrasion of minimizing tire and the drive ability of vehicle, the trend of setting up steering hardware on third axle and back vehicle bridge is more and more stronger, but the difficulty of setting up steering hardware in the vehicle bridge of back is exactly the realization that front and back turn to interlock, if adopt the traditional mechanical mode, complex structure, linkage longitudinal ruler modest ability is difficult for arranging.
Summary of the invention
Technical matters to be solved by this invention is the deficiency that exists at above-mentioned prior art and the vehicle fluid pressure linkage steering apparatus that a kind of simple in structure, dependable performance is provided, is easy to install, to alleviate the wearing and tearing of multi-wheeled vehicle wheel tyre, thereby improve the drive ability of automobile, reduce the car opertion cost.
The present invention for the technical scheme that problem adopted of the above-mentioned proposition of solution is: comprise car chassis 9 and the front steering axle 3 that is installed in the car chassis front portion, its difference is to be installed at the rear portion of car chassis back steeraxle 8, side at front steering axle is equipped with hydraulic linked cylinder 2, hydraulic linked cylinder is a single-piston-rod hydraulic cylinder, one end and permanent seat are hinged, the other end links to each other with the pitman arm 1 of front steering axle, opposite side corresponding to hydraulic linked cylinder on the steeraxle of back disposes linked steering cylinder 7, the linked steering cylinder is a single-piston-rod hydraulic cylinder, one end and permanent seat are hinged, the other end links to each other with the pitman arm of the respective side of back steeraxle, and the rod chamber of hydraulic linked cylinder and rodless cavity are connected with the rod chamber and the rodless cavity of linked steering cylinder by pipeline 4 respectively, constitute the loop that the sealing of two cylinders, two chambeies is communicated with, stretch and the synchronous interaction of contracting or contracting and stretching to keep hydraulic linked cylinder and linked steering cylinder.
Press such scheme, described front steering axle is a bridge and two bridges of automotive front, and described back steeraxle is three bridges and the later vehicle bridge of three bridges of automobile rear.
Press such scheme, described hydraulic linked cylinder is a single-piston, floating-caliper brake two-chamber single-piston-rod hydraulic cylinder, and a side of piston is a rod chamber, and opposite side is a rodless cavity.
Press such scheme, described hydraulic linked cylinder is three pistons, the four chamber single-piston-rod hydraulic cylinders of band servo cylinder, wherein two of hydraulic actuating cylinder is a hydraulic linked cylinder, be divided into rod chamber and rodless cavity, the both sides, middle part of hydraulic actuating cylinder are servo cylinder, be separated into two pressure-driven chambeies by intermediate piston and left and right sides piston, be connected with pressure liquid source by change-over valve, two pressure-driven chambeies are rod chamber.
Press such scheme, on the basis of propons fluid-link steering or preceding doube bridge hydrostatic steering system, hydraulic linked cylinder 2 is installed, on the steeraxle of back, lay linked steering cylinder 7.
Press such scheme, the described synchronising linkage that is made of hydraulic linked cylinder and linked steering cylinder can dispose in back dual rotation bridge, back three steeraxles or the back multi-steering bridge that is installed in many vehicle bridge automobile in pairs.When vehicle ' turns to, allow many wheels concern linked steering in proportion.
Beneficial effect of the present invention is: 1, simple in structure, dependable performance, be easy to install and safeguard; 2, can improve and improve the operation and the turning efficiency of many bridge constructions autotruck, alleviate handling maneuver power, can reduce automobile running resistance simultaneously, alleviate the wearing and tearing of multi-wheeled vehicle wheel tyre, thereby reduce the car opertion cost.
Description of drawings
Fig. 1 is the hydraulic schematic diagram of one embodiment of the invention.
Fig. 2 is the plan structure figure of one embodiment of the invention.
Fig. 3 is the hydraulic schematic diagram of another embodiment of the present invention.
Fig. 4 is the plan structure figure of third embodiment of the invention.
The specific embodiment
Further specify embodiments of the invention below in conjunction with accompanying drawing.
Embodiment 1 as shown in Figure 1, 2, comprise car chassis 9 and the front steering axle 3 that is installed in the car chassis front portion, left side at front steering axle (bridge or two bridges) is equipped with hydraulic linked cylinder 2, hydraulic linked cylinder is a single-piston-rod hydraulic cylinder, one end and permanent seat are hinged, permanent seat connects firmly mutually with front steering axle, and the other end of hydraulic linked cylinder is that the pitman arm 1 of rod end and front steering axle is hinged; Be installed on back steeraxle 8 (three bridges or four bridges) at the rear portion of car chassis, right side on the steeraxle of back disposes linked steering cylinder 7 corresponding to hydraulic linked cylinder, the linked steering cylinder is a single-piston-rod hydraulic cylinder, one end and permanent seat are hinged, permanent seat connects firmly mutually with the back steeraxle, and the other end is that rod end links to each other with the pitman arm of the respective side of back steeraxle; And the rod chamber of hydraulic linked cylinder 2 and rodless cavity are connected with the rod chamber and the rodless cavity of linked steering cylinder 7 by pipeline 4 respectively, constitute the loop that the sealing of two cylinders, two chambeies is communicated with, stretch and the synchronous interaction of contracting or contracting and stretching to keep hydraulic linked cylinder and linked steering cylinder, be hydraulic linked cylinder when preceding vehicle bridge turns to the effect lower piston rod of propulsive effort protruding, the fluid of its rod chamber is forced out the rod chamber that flows into the linked steering cylinder, make the piston rod retraction of linked steering cylinder, the fluid of rodless cavity then is forced out the rodless cavity that enters hydraulic linked cylinder, reaches synchronously accurate linked steering.Two bridges of automobile turn to and a bridge can be linked by the mode of mechanical pull bar between turning to.For ease of the filling oil and the exhaust of hydraulic efficiency pressure system, on two pipelines that hydraulic linked cylinder 2 and linked steering cylinder 7 link to each other respectively, draw pipeline respectively and two-position four-way valve 6 joins, two pipelines of the opposite side of two-position four-way valve are mutually and connect the back and link to each other with exhaust pump 5.When hydraulic efficiency pressure system after install finishing on the vehicle, open the exhausr port of each oil cylinder, the position that is conducted, two-position four-way valve place is given whole hydraulic efficiency pressure system exhaust by exhaust pump in the mode of pump oil, guarantees the normal operation of hydraulic efficiency pressure system.Exhaust finishes, and two-position four-way valve cuts out, and makes hydraulic linked cylinder and linked steering cylinder constitute the loop that the sealing of two cylinders, two chambeies is communicated with.
During motor turning, under the promotion of deflector, the pitman arm 1 of two bridges rotates, and it is flexible to drive hydraulic linked cylinder 2, promotes linked steering cylinder 7 and makes corresponding actions, drives third axle and turns to.Because hydraulic linked cylinder and linked steering cylinder diameter are provided with by a certain percentage, thereby the turning circle that guarantees three bridges is concentric with one, two bridges, realizes that the third axle of automobile turns to, and guarantees the conformability of Vehicular turn.
Claims (8)
1. vehicle fluid pressure linkage steering apparatus, comprise car chassis and the front steering axle that is installed in the car chassis front portion, it is characterized in that being installed on the back steeraxle at the rear portion of car chassis, side at front steering axle is equipped with hydraulic linked cylinder, hydraulic linked cylinder is a single-piston-rod hydraulic cylinder, one end and permanent seat are hinged, the other end links to each other with the pitman arm of front steering axle, opposite side corresponding to hydraulic linked cylinder on the steeraxle of back disposes the linked steering cylinder, the linked steering cylinder is a single-piston-rod hydraulic cylinder, one end and permanent seat are hinged, the other end links to each other with the pitman arm of the respective side of back steeraxle, and the rod chamber of hydraulic linked cylinder and rodless cavity are connected with the rod chamber and the rodless cavity of linked steering cylinder by pipeline respectively, constitute the loop that the sealing of two cylinders, two chambeies is communicated with, stretch and the synchronous interaction of contracting or contracting and stretching to keep hydraulic linked cylinder and linked steering cylinder.
2. must ask 1 described vehicle fluid pressure linkage steering apparatus by power, it is characterized in that described front steering axle is a bridge and two bridges of automotive front, described back steeraxle is three bridges and the later vehicle bridge of three bridges of automobile rear.
3. by claim 1 or 2 described vehicle fluid pressure linkage steering apparatus, it is characterized in that described hydraulic linked cylinder is a single-piston, floating-caliper brake two-chamber single-piston-rod hydraulic cylinder, a side of piston is a rod chamber, and opposite side is a rodless cavity.
4. by claim 1 or 2 described vehicle fluid pressure linkage steering apparatus, it is characterized in that the three pistons four chamber single-piston-rod hydraulic cylinders of described hydraulic linked cylinder for the band servo cylinder, wherein two of hydraulic actuating cylinder is a hydraulic linked cylinder, be divided into rod chamber and rodless cavity, the both sides, middle part of hydraulic actuating cylinder are servo cylinder, be separated into two pressure-driven chambeies by intermediate piston and left and right sides piston, be connected with pressure liquid source by change-over valve, two pressure-driven chambeies are rod chamber.
5. by claim 1 or 2 described vehicle fluid pressure linkage steering apparatus, it is characterized in that on the basis of propons fluid-link steering or preceding doube bridge hydrostatic steering system, hydraulic linked cylinder is installed, on the steeraxle of back, lay the linked steering cylinder.
6. by the described vehicle fluid pressure linkage steering apparatus of claim 4, it is characterized in that the described synchronising linkage that is made of hydraulic linked cylinder and linked steering cylinder disposes in back dual rotation bridge, back three steeraxles or the back multi-steering bridge that is installed in many vehicle bridge automobile in pairs.
7. by claim 1 or 2 described vehicle fluid pressure linkage steering apparatus, it is characterized in that drawing pipeline respectively on two pipelines that hydraulic linked cylinder and linked steering cylinder link to each other respectively and two-position four-way valve joins, two pipelines of the opposite side of two-position four-way valve mutually and connect the back and link to each other with exhaust pump.
8. by the described vehicle fluid pressure linkage steering apparatus of claim 6, it is characterized in that synchronising linkage that hydraulic linked cylinder and linked steering cylinder are constituted in pairs configuration one by one serial connection be installed on a plurality of back steeraxles, realize the synchronous interaction that many vehicle bridge turn to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101683833A CN101157369A (en) | 2007-11-20 | 2007-11-20 | Vehicle fluid pressure linkage steering apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101683833A CN101157369A (en) | 2007-11-20 | 2007-11-20 | Vehicle fluid pressure linkage steering apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101157369A true CN101157369A (en) | 2008-04-09 |
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ID=39305631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101683833A Pending CN101157369A (en) | 2007-11-20 | 2007-11-20 | Vehicle fluid pressure linkage steering apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101157369A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787993B (en) * | 2010-01-26 | 2012-07-11 | 云南省机械研究设计院 | Method for improving hydraulic transmission rigidity of hydraulic system |
-
2007
- 2007-11-20 CN CNA2007101683833A patent/CN101157369A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787993B (en) * | 2010-01-26 | 2012-07-11 | 云南省机械研究设计院 | Method for improving hydraulic transmission rigidity of hydraulic system |
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Open date: 20080409 |