CN103979011A - Second-front-axle steering device and double-front-axle steering system - Google Patents
Second-front-axle steering device and double-front-axle steering system Download PDFInfo
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- CN103979011A CN103979011A CN201410214085.3A CN201410214085A CN103979011A CN 103979011 A CN103979011 A CN 103979011A CN 201410214085 A CN201410214085 A CN 201410214085A CN 103979011 A CN103979011 A CN 103979011A
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- steering
- propons
- pressure cylinder
- transmission system
- steering hardware
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Abstract
The invention discloses a second-front-axle steering device and a double-front-axle steering system. The second-front-axle steering device comprises a steering trapezium structure formed by a tie rod, a front-axle I-shaped beam and two steering trapezium arms, and also comprises a pressure transmission system, a steering wheel angle sensor and a control unit, a pressure cylinder of the pressure transmission system is arranged on the front-axle I-shaped beam, a piston rod of the pressure cylinder is connected with one of the two steering trapezium arms, and the control unit controls the pressure transmission system to act according to an angle signal output by the steering wheel angle sensor. All the transmission arms and connecting rods which are originally connected between a first-front-axle steering device and the second-front-axle steering device are omitted, so that the second-front-axle steering device has the advantages of simple assembly process, ease of control over the weight of the whole vehicle and interference avoidance; in addition, the power of the second-front-axle steering device is supplied by an independent hydraulic transmission system without being transferred by the first-front-axle steering device, so that the second-front-axle steering device also has the advantage of portable steering.
Description
Technical field
The present invention relates to automobile technical field, relate in particular to a kind of the second propons steering hardware and two front axle automobile steering system.
Background technology
Existing pair of front axle automobile steering system generally includes the first propons steering hardware and the second propons steering hardware, as shown in Figure 1, the first propons steering hardware comprises deflector A4, the first steering drop arm A1, the first propons drag link A2 and the first propons A3, wherein, the first steering drop arm A1 is fixedly connected with the output shaft of deflector A4, one end of the first propons drag link A2 and the first steering drop arm A1 are hinged, and the other end is connected with the track arm of the first propons A3, the second propons steering hardware comprises deflector A4, the first steering drop arm A1, First Transition pull bar A5, transition rocking arm A7, the second transitional pull rod A8, the second steering drop arm A10 and the second propons drag link A13, wherein, transition rocking arm A7 and the transitional rocker bracket A6 being fixedly mounted on crossbeam are hinged, the two ends of First Transition pull bar A5 are hinged with the first steering drop arm A1 and First Transition rocking arm A7 respectively, the two ends of the second transitional pull rod A8 are hinged with transition rocking arm A7 and the second steering drop arm A10 respectively, and the second steering drop arm A10 is hinged with the second steering drop arm support A9 being fixedly mounted on crossbeam, one end of the second propons drag link A13 and the second steering drop arm A10 are hinged, the other end is connected with the track arm of the second propons.The principle of work of this kind of two front axle automobile steering systems is: deflector A4, for steering swivel system provides moment of torsion, controls the first steering drop arm A1 swing, thereby the first steering drop arm A1 pulls the first propons drag link A2 to control the first propons A3, turns to; Meanwhile, First Transition pull bar A8 follows the swing of the first steering drop arm A1 and seesaws, and then drives the second transitional pull rod A8 to seesaw, and finally makes the second propons drag link A13 seesaw and pull the second propons A14 to realize turning function.As can be seen here, between the first propons A3 and the second propons A14, by the mechanical connection between a series of pull bars and rocking arm, realize interlock, thereby guarantee the motor coordination between the first propons A3 and the second propons A14.The defect that this kind of two front axle automobile steering system exist is: 1, the linkage parts between the first propons and the second propons are more, has complex structure, assembly technology is complicated and is unfavorable for controlling the problem of complete vehicle weight; 2, due to limited space between the first propons and the second propons, therefore, in steering procedure, First Transition pull bar is easily interfered with the first front axle tyre, the second transitional pull rod is easily interfered with the first front axle tyre and bumper, the second propons drag link easily and the second front axle tyre interfere, and transition rocking arm and the second steering drop arm also may be interfered with the parts such as noise silencer and freeing pipe in swing process; 3, the first propons and the second propons provide moment of torsion by deflector, have the heavy problem that turns to.
Also have in addition a kind of two front axle automobile steering systems of cancelling middle transition rocker structure, and directly connect the first steering drop arm and the second steering drop arm by a cylinder lever connecting rod.Although this kind of two front axle automobile steering systems have solved above-mentioned defect 1 and 2 to a certain extent, but still there is above-mentioned defect 3, and because this kind of front axle automobile steering system adopts the connection structure of a cylinder lever connecting rod, so also there is the poor problem of structural strength.
Summary of the invention
The object of the embodiment of the present invention is to overcome the defect that existing pair of front axle automobile steering system exists, and a kind of the second propons steering hardware and two front axle automobile steering system that is easy to assembling and can avoids interfering in steering procedure is provided.
For achieving the above object, the technical solution used in the present invention is: a kind of the second propons steering hardware, comprise by intermediate rod, propons H-girder and two tie rod linkages that steering trapezoidal arm forms, described the second propons independent steering assembly also comprises pressure transmission system, steering wheel angle sensor and control unit, the pressure cylinder of described pressure transmission system is arranged on described propons H-girder, the piston rod of described pressure cylinder is connected with one of them steering trapezoidal arm, described control unit is controlled described pressure transmission system action according to the angular signal of described steering wheel angle sensor output.
Preferably, stroke sensor for detection of piston rod position is installed on the piston rod of described pressure cylinder, described stroke sensor feeds back to described control unit by the position signal detecting, with when described control unit is controlled described pressure transmission system action according to the angular signal of described steering wheel angle sensor output, make the piston rod movement of described pressure cylinder to the position corresponding with described angular signal.
Preferably, described pressure transmission system comprises the flow-controlling gate on the circulation line that is connected to described pressure cylinder.
Preferably, described pressure transmission system is power hydraulic system.
Preferably, the piston rod of described pressure cylinder and the medial surface of described steering trapezoidal arm are connected.
Preferably, the left steering trapezoid connection in the piston rod of described pressure cylinder and two steering trapezoidal arms is hinged.
Preferably, between described pressure cylinder and described propons H-girder, by sphere-pin pair, be connected.
Preferably, between the piston rod of described pressure cylinder and one of them steering trapezoidal arm, by sphere-pin pair, be connected.
For achieving the above object, the technical solution used in the present invention is: a kind of pair of front axle automobile steering system, comprise the first propons steering hardware and the second propons steering hardware, and described the second propons steering hardware is above-mentioned the second propons steering hardware described in any.
Preferably, described pressure transmission system through flow divider valve simultaneously for the deflector of the first propons steering hardware and the pressure cylinder of the second propons steering hardware provide power steering medium.
Beneficial effect of the present invention is, the second propons steering hardware of the present invention and two front axle automobile steering system are originally connected in the first steering drop arm of the first propons steering hardware and all transmission arms and the connecting rod between the second propons because having cancelled, so have advantages of that assembly technology is simple, be easy to control complete vehicle weight, avoid interfering; In addition, again because the second propons steering hardware of the present invention provides power by independent power hydraulic system, and without by the first propons steering hardware transferring power, therefore also have advantages of turn to light.
Accompanying drawing explanation
Fig. 1 shows a kind of structural representation of existing double-front-axle steering;
Fig. 2 shows according to the structural representation of a kind of embodiment of the second propons steering hardware of the present invention;
Fig. 3 shows according to the frame principle figure of a kind of embodiment of the power hydraulic system of of the present invention pair of front axle automobile steering system, and wherein, the heavy line in figure is pipeline, and fine line is circuit.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
As shown in Figures 2 and 3, the second propons steering hardware of the present invention comprises the second front bridge portion of prior art, the second propons comprises the tie rod linkage consisting of intermediate rod 3, propons H-girder 2, left steering trapezoid connection 1a and right steering trapezoid connection 1b, wherein, left steering trapezoid connection 1a is fixedly connected with right steering joint with left steering joint respectively with right steering trapezoid connection 1b.The second propons independent steering assembly of the present invention is cancelled original the first steering drop arm of the first propons steering hardware and all transmission arms and connecting rod between the second propons of being connected in, instead comprise pressure transmission system, steering wheel angle sensor 7 and control unit 9 for detection of the angular signal of bearing circle, this steering wheel angle sensor 7 is installed on steering column, the angular signal of its output comprises corner direction and corner size, this pressure transmission system comprises the moving pump 81 that turns as dynamical element, pressure cylinder 6 as power element, control and regulate the pressure of medium, the control and regulation element of flow and flow direction, comprise connecting line and power steering medium source (be called for short moving turn medium source) 82 (as power steering medium be hydraulic oil power steering medium source be power steering oil can, as power steering medium be gas power steering medium source be power steering air source box) at interior auxiliary element, and for the power steering medium of transferring energy.The pressure cylinder 6 of this pressure transmission system is to be for example arranged on propons H-girder 2 by pressure cylinder support 5, the piston rod of pressure cylinder 6 is connected with one of them steering trapezoidal arm, for example be connected with the medial surface of steering trapezoidal arm, in Fig. 2, be connected with left steering trapezoid connection 1a, control unit 9 is according to the angular signal control presssure driving system action of steering wheel angle sensor 7 outputs, at this, because the angular signal of 7 outputs of this steering wheel angle sensor in reality is directly to export electronic control unit (ECU) to, therefore, also can be designed as electronic control unit and the angular signal receiving is exported to the control unit 9 of the second propons steering hardware.
Piston rod and left steering trapezoid connection 1a with pressure cylinder 6 are connected to example, the principle of work that the second propons steering hardware of the present invention is described is: when the first propons right steering, the second propons steering hardware will shrink the piston rod of pressure cylinder according to the angular signal of steering wheel angle sensor output, thereby pull left steering trapezoid connection 1a to move right, and then pull revolver right steering, left steering trapezoid connection 1a promotes intermediate rod 3 and controls right steering trapezoid connection 1b right-hand rotation simultaneously, thereby makes the right turning clockwise of taking turns; When the first propons left steering, the second propons steering hardware will stretch out the piston rod of pressure cylinder according to the angular signal of steering wheel angle sensor output, and then makes left and right wheels all to left movement.Like this, can guarantee first, second propons motor coordination.
The second propons steering hardware of the present invention is originally connected in the first steering drop arm of the first propons steering hardware and all transmission arms and the connecting rod between the second propons because having cancelled, so have advantages of that assembly technology is simple, be easy to control complete vehicle weight, avoid interfering; In addition, again because the second propons steering hardware of the present invention provides power by independent power hydraulic system, and without by the first propons steering hardware transferring power, therefore also have advantages of turn to light.
In order to make the control unit can be according to the angular signal movement travel of the piston rod of control presssure cylinder 6 exactly, stroke sensor for detection of piston rod position can be installed on the piston rod of pressure cylinder 6, stroke sensor feeds back to control unit 9 by the position signal detecting, with when control unit 9 moves according to the angular signal control presssure driving system of steering wheel angle sensor output, make the piston rod movement of pressure cylinder 6 to the position corresponding with angular signal, at this, those skilled in the art can be according to the corresponding relation between steering wheel angle and the steering trapezoidal arm corner of the first propons steering hardware, the steering trapezoidal arm that calculates the second propons steering hardware makes the first propons and the second propons have corner required under the constraint condition of identical instantaneous center of rotation, and then the required movement travel of the piston rod that can calculate pressure cylinder 6, this kind of mode can reduce turn inside diameter radius, avoid wear on tyres.
As shown in Figure 3, pressure transmission system of the present invention can comprise according to action request the change-over valve 83 being connected with two chambeies of pressure cylinder, sense of motion for the piston rod of control unit 9 control presssure cylinders 6, wherein, the oil-feed of change-over valve 83 (gas) mouthful turns pump 81 and is connected with moving, and oil return (gas) mouth is communicated with medium source 82.In addition, in order to make kinematic velocity and the movement travel that control unit 9 can control plunger bar, can on the circulation line of pressure cylinder 6, be provided for the flowing velocity of control agent and the flow-controlling gate of flow 84, this circulation line comprises oil-feed (gas) road and oil return (gas) road of pressure cylinder 6, and what this flow-controlling gate 84 was arranged on pressure cylinder 6 conventionally turns on oil-feed (gas) road that pump 81 is connected with moving.
Because hydraulic pressure has larger operation pressure, so the steering swivel system of most of automobile steering system, especially heavy motor vehicle all adopts fluid control, for the steering swivel system that adopts fluid control, above-mentioned pressure transmission system is power hydraulic system, and pressure cylinder is hydraulic actuating cylinder.
In motor turning field, between above-mentioned pressure cylinder 6 and propons H-girder 2, conventionally by sphere-pin pair, be connected; And also can conventionally by sphere-pin pair, be connected between the piston rod of pressure cylinder 6 and one of them steering trapezoidal arm.
Of the present invention pair of front axle automobile steering system comprises existing the first propons steering hardware and the second propons steering hardware of the present invention, therefore, of the present invention pair of front axle automobile steering system has advantages of that assembly technology is simple, is easy to control complete vehicle weight, avoids interfering and turns to light.
As shown in Figure 3, the first propons steering hardware of the present invention and the second propons steering hardware can share identical steering pump 81 and medium source 82, therefore, the steering pump 81 of above-mentioned pressure transmission system can be through flow divider valve 85 simultaneously for the deflector A4 of the first propons steering hardware and the pressure cylinder 6 of the second propons steering hardware provide power steering medium.
Embodiment shown in above foundation is graphic describes structure of the present invention, feature and action effect in detail; the foregoing is only preferred embodiment of the present invention; but the present invention does not limit practical range with shown in drawing; every change of doing according to conception of the present invention; or be revised as the equivalent embodiment of equivalent variations; when not exceeding yet specification sheets and illustrating contain spiritual, all should be in protection scope of the present invention.
Claims (10)
1. a propons steering hardware, comprise by intermediate rod, propons H-girder and two tie rod linkages that steering trapezoidal arm forms, it is characterized in that, described the second propons independent steering assembly also comprises pressure transmission system, steering wheel angle sensor and control unit, the pressure cylinder of described pressure transmission system is arranged on described propons H-girder, the piston rod of described pressure cylinder is connected with one of them steering trapezoidal arm, and described control unit is controlled described pressure transmission system action according to the angular signal of described steering wheel angle sensor output.
2. the second propons steering hardware according to claim 1, it is characterized in that, stroke sensor for detection of piston rod position is installed on the piston rod of described pressure cylinder, described stroke sensor feeds back to described control unit by the position signal detecting, with when described control unit is controlled described pressure transmission system action according to the angular signal of described steering wheel angle sensor output, make the piston rod movement of described pressure cylinder to the position corresponding with described angular signal.
3. the second propons steering hardware according to claim 1 and 2, is characterized in that, described pressure transmission system comprises the flow-controlling gate that is controlled by described control unit on the circulation line that is connected to described pressure cylinder.
4. the second propons steering hardware according to claim 1 and 2, is characterized in that, described pressure transmission system is power hydraulic system.
5. the second propons steering hardware according to claim 1 and 2, is characterized in that, the piston rod of described pressure cylinder is connected with the medial surface of described steering trapezoidal arm.
6. the second propons steering hardware according to claim 1 and 2, is characterized in that, the piston rod of described pressure cylinder is connected with the left steering trapezoid connection in two steering trapezoidal arms.
7. the second propons steering hardware according to claim 1 and 2, is characterized in that, between described pressure cylinder and described propons H-girder, by sphere-pin pair, is connected.
8. the second propons steering hardware according to claim 1 and 2, is characterized in that, between the piston rod of described pressure cylinder and one of them steering trapezoidal arm, by sphere-pin pair, is connected.
9. two front axle automobile steering systems, comprise the first propons steering hardware and the second propons steering hardware, it is characterized in that, described the second propons steering hardware is the second propons steering hardware described in any one in claim 1 to 8.
10. according to claim 9 pair of front axle automobile steering system, is characterized in that, described pressure transmission system through flow divider valve simultaneously for the deflector of the first propons steering hardware and the pressure cylinder of the second propons steering hardware provide power steering medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410214085.3A CN103979011B (en) | 2014-05-19 | 2014-05-19 | A kind of second propons steering hardware and double-front axle automobile steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410214085.3A CN103979011B (en) | 2014-05-19 | 2014-05-19 | A kind of second propons steering hardware and double-front axle automobile steering system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103979011A true CN103979011A (en) | 2014-08-13 |
| CN103979011B CN103979011B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410214085.3A Active CN103979011B (en) | 2014-05-19 | 2014-05-19 | A kind of second propons steering hardware and double-front axle automobile steering system |
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| CN (1) | CN103979011B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107010109A (en) * | 2017-04-14 | 2017-08-04 | 北京航天发射技术研究所 | A kind of heavy type chassis long wheelbase doube bridge steering |
| CN110821899A (en) * | 2019-11-21 | 2020-02-21 | 山东交通学院 | Energy-saving robot hydraulic moving platform |
| CN113335377A (en) * | 2021-05-27 | 2021-09-03 | 重庆望江工业有限公司 | Tandem type double front axle steering power assisting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107010109A (en) * | 2017-04-14 | 2017-08-04 | 北京航天发射技术研究所 | A kind of heavy type chassis long wheelbase doube bridge steering |
| CN110821899A (en) * | 2019-11-21 | 2020-02-21 | 山东交通学院 | Energy-saving robot hydraulic moving platform |
| CN113335377A (en) * | 2021-05-27 | 2021-09-03 | 重庆望江工业有限公司 | Tandem type double front axle steering power assisting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103979011B (en) | 2016-04-06 |
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Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee before: Anhui Jianghuai Automotive Co., Ltd. |