CN103979011B - A kind of second propons steering hardware and double-front axle automobile steering system - Google Patents
A kind of second propons steering hardware and double-front axle automobile steering system Download PDFInfo
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- CN103979011B CN103979011B CN201410214085.3A CN201410214085A CN103979011B CN 103979011 B CN103979011 B CN 103979011B CN 201410214085 A CN201410214085 A CN 201410214085A CN 103979011 B CN103979011 B CN 103979011B
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Abstract
The invention discloses a kind of second propons steering hardware and double-front axle automobile steering system, the former comprises the tie rod linkage be made up of intermediate rod, propons H-girder and two steering trapezoidal arms, second propons independent steering assembly also comprises pressure transmission system, steering wheel angle sensor and control unit, the pressure cylinder of pressure transmission system is arranged on propons H-girder, the piston rod of pressure cylinder is connected with one of them steering trapezoidal arm, the angular signal control presssure driving system action that control unit exports according to steering wheel angle sensor.Apparatus of the present invention are originally connected to all transmission arms between the first propons steering hardware and the second propons and connecting rod because eliminating, thus have assembly technology simple, be easy to control complete vehicle weight, avoid the advantage that interferes; In addition, again because the second propons steering hardware provides power by independent power hydraulic system, and without the need to by the first propons steering hardware transferring power, therefore also have and turn to light advantage.
Description
Technical field
The present invention relates to automobile technical field, particularly relate to a kind of second propons steering hardware and double-front axle automobile steering system.
Background technology
Existing double-front axle automobile steering system generally includes the first propons steering hardware and the second propons steering hardware, as shown in Figure 1, 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, first steering drop arm A1 is fixedly connected with the output shaft of deflector A4, one end and the first steering drop arm A1 of the first propons drag link A2 are hinged, and the other end is connected with the track arm of the first propons A3, second propons steering hardware comprises deflector A4, first steering drop arm A1, First Transition pull bar A5, transition rocker arm A7, second transitional pull rod A8, second steering drop arm A10 and the second propons drag link A13, wherein, transition rocker arm A7 and the transitional rocker bracket A6 be 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 rocker 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 be fixedly mounted on crossbeam, one end and the second steering drop arm A10 of the second propons drag link A13 are hinged, the other end is connected with the track arm of the second propons.The principle of work of this kind of double-front axle automobile steering system is: deflector A4 provides moment of torsion for steering swivel system, controls the first steering drop arm A1 swing, and the first steering drop arm A1 pulls the first propons drag link A2 thus controls the first propons A3 and 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, realize linking by the mechanical connection between a series of pull bar and rocking arm between the first propons A3 and the second propons A14, thus ensure the motor coordination between the first propons A3 and the second propons A14.The defect that this kind of double-front axle automobile steering system exists is: the linkage parts 1, between the first propons and the second propons are more, there is complex structure, assembly technology complicated and be 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, second transitional pull rod is easily interfered with the first front axle tyre and bumper, second propons drag link is easily interfered with the second front axle tyre, and transition rocker 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, exist and turn to heavy problem.
Also have a kind of double-front axle automobile steering system cancelling middle transition rocker structure in addition, and directly connect the first steering drop arm and the second steering drop arm by a cylinder lever connecting rod.Although this kind of double-front axle automobile steering system solves above-mentioned defect 1 and 2 to a certain extent, but still there is above-mentioned defect 3, and adopt the connection structure of a cylinder lever connecting rod due to this kind of front axle automobile steering system, therefore 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 double-front axle automobile steering system exists, and provides a kind of and is easy to assemble and can avoids the second propons steering hardware of interfering in steering procedure and double-front axle automobile steering system.
For achieving the above object, the technical solution used in the present invention is: a kind of second propons steering hardware, comprise by intermediate rod, the tie rod linkage that propons H-girder and two steering trapezoidal arms are formed, described 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 controls described pressure transmission system action according to the angular signal that described steering wheel angle sensor exports.
Preferably, the piston rod of described pressure cylinder is provided with the stroke sensor for detecting piston rod position, the position signal detected is fed back to described control unit by described stroke sensor, with when described control unit controls described pressure transmission system action according to the angular signal that described steering wheel angle sensor exports, make the piston rod movement of described pressure cylinder on the position corresponding with described angular signal.
Preferably, described pressure transmission system comprises the flow-controlling gate on the circulation line being connected to described pressure cylinder.
Preferably, described pressure transmission system is power hydraulic system.
Preferably, the piston rod of described pressure cylinder is connected with the medial surface of described steering trapezoidal arm.
Preferably, the left steering trapezoid connection in the piston rod of described pressure cylinder and two steering trapezoidal arms is hinged.
Preferably, be connected by sphere-pin pair between described pressure cylinder with described propons H-girder.
Preferably, the piston rod of described pressure cylinder is connected by sphere-pin pair with between one of them steering trapezoidal arm.
For achieving the above object, the technical solution used in the present invention is: a kind of double-front axle automobile steering system, comprises the first propons steering hardware and the second propons steering hardware, and described second propons steering hardware is above-mentioned the second propons steering hardware described in any one.
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, second propons steering hardware of the present invention and double-front axle automobile steering system are originally connected to all transmission arms between the first steering drop arm of the first propons steering hardware and the second propons and connecting rod because eliminating, thus have assembly technology simple, be easy to control complete vehicle weight, avoid the advantage that interferes; In addition, again because the second propons steering hardware of the present invention provides power by independent power hydraulic system, and without the need to by the first propons steering hardware transferring power, therefore also have and turn to light advantage.
Accompanying drawing explanation
Fig. 1 shows a kind of structural representation of existing double-front-axle steering;
Fig. 2 shows the structural representation of a kind of embodiment according to the second propons steering hardware of the present invention;
Fig. 3 shows the frame principle figure of a kind of embodiment of the power hydraulic system according to double-front axle automobile steering system of the present invention, and wherein, the heavy line in figure is pipeline, and fine line is circuit.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
As shown in Figures 2 and 3, second propons steering hardware of the present invention comprises bridge portion before second of prior art, second propons comprises the tie rod linkage be made up 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 and right steering trapezoid connection 1b save with left steering respectively to save with right steering and are fixedly connected with.Second propons independent steering assembly of the present invention is cancelled and is originally connected to all transmission arms between the first steering drop arm of the first propons steering hardware and the second propons and connecting rod, instead pressure transmission system is comprised, for detecting steering wheel angle sensor 7 and the control unit 9 of the angular signal of bearing circle, this steering wheel angle sensor 7 is installed on steering column, its angular signal exported comprises corner direction and corner size, this pressure transmission system comprises and turns pump 81 as the dynamic of dynamical element, as the pressure cylinder 6 of 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 dynamic turns medium source) 82 (as power steering medium be hydraulic oil then power steering medium source be power steering oil can, as power steering medium be gas then 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 such as be 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, such as be connected with the medial surface of steering trapezoidal arm, be connected with left steering trapezoid connection 1a in Fig. 2, the angular signal control presssure driving system action that control unit 9 exports according to steering wheel angle sensor 7, at this, the angular signal exported due to this steering wheel angle sensor 7 in reality directly exports electronic control unit (ECU) to, therefore, also can be designed as the control unit 9 that the angular signal received is exported to the second propons steering hardware by electronic control unit.
Be connected with left steering trapezoid connection 1a for the piston rod of pressure cylinder 6, illustrate that the principle of work of the second propons steering hardware of the present invention is: when the first propons right steering, the angular signal exported according to steering wheel angle sensor makes the piston rod of pressure cylinder shrink by the second propons steering hardware, thus pull left steering trapezoid connection 1a to move right, and then pull revolver right steering, simultaneously left steering trapezoid connection 1a promotes intermediate rod 3 and controls right steering trapezoid connection 1b and turn right, thus makes rightly to take turns turning clockwise; When the first propons left steering, the angular signal exported according to steering wheel angle sensor makes the piston rod of pressure cylinder stretch out by the second propons steering hardware, and then makes left and right wheels all to left movement.Like this, first, second propons motor coordination can be ensured.
Second propons steering hardware of the present invention is originally connected to all transmission arms between the first steering drop arm of the first propons steering hardware and the second propons and connecting rod because eliminating, thus have assembly technology simple, be easy to control complete vehicle weight, avoid the advantage that interferes; In addition, again because the second propons steering hardware of the present invention provides power by independent power hydraulic system, and without the need to by the first propons steering hardware transferring power, therefore also have and turn to light advantage.
In order to make control unit can according to the movement travel of the angular signal piston rod of control presssure cylinder 6 exactly, stroke sensor for detecting piston rod position can be installed on the piston rod of pressure cylinder 6, the position signal detected is fed back to control unit 9 by stroke sensor, during with the angular signal control presssure driving system action exported according to steering wheel angle sensor at control unit 9, make the piston rod movement of pressure cylinder 6 on the position corresponding with angular signal, at this, those skilled in the art can according to the corresponding relation between steering wheel angle and the steering trapezoidal arm corner of the first propons steering hardware, calculate the corner that the steering trapezoidal arm of the second propons steering hardware is required under making the first propons and the second propons have the constraint condition of identical instantaneous center of rotation, and then the movement travel needed for piston rod of pressure cylinder 6 can be calculated, this kind of mode can reduce vehicle turn radius, avoid wear on tyres.
As shown in Figure 3, pressure transmission system of the present invention can comprise and two of pressure cylinder change-over valves that chamber is connected 83 according to action request, for the sense of motion of the piston rod of control unit 9 control presssure cylinder 6, wherein, oil-feed (gas) mouth of change-over valve 83 turns pump 81 be connected with dynamic, and oil return (gas) mouth is communicated with medium source 82.In addition, in order to make control unit 9 can the kinematic velocity of control plunger bar and movement travel, can arrange on the circulation line of pressure cylinder 6 and be used for the flowing velocity of control agent and the flow-controlling gate 84 of flow, 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 usually turns on oil-feed (gas) road that pump 81 is connected with dynamic.
Because hydraulic pressure has larger operation pressure, so most of automobile steering system, especially the steering swivel system of heavy motor vehicle all adopts fluid control, for the steering swivel system adopting fluid control, above-mentioned pressure transmission system is power hydraulic system, and pressure cylinder is hydraulic actuating cylinder.
In motor turning field, above-mentioned pressure cylinder 6 is connected by sphere-pin pair usually with between propons H-girder 2; And also can be usually connected by sphere-pin pair between the piston rod of pressure cylinder 6 with one of them steering trapezoidal arm.
Double-front axle automobile steering system of the present invention comprises existing first propons steering hardware and the second propons steering hardware of the present invention, therefore, double-front axle automobile steering system of the present invention have assembly technology simple, be easy to control complete vehicle weight, avoid interfering and turn to light advantage.
As shown in Figure 3, 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 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.
Structure of the present invention, feature and action effect is described in detail above according to graphic shown embodiment; 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 done according to conception of the present invention; or be revised as the Equivalent embodiments of equivalent variations; do not exceed yet specification sheets with diagram contain spiritual time, all should in protection scope of the present invention.
Claims (9)
1. a double-front axle automobile steering system, comprise the first propons steering hardware and the second propons steering hardware, it is characterized in that, described second propons steering hardware comprises the tie rod linkage be made up of intermediate rod, propons H-girder and two steering trapezoidal arms, wherein, described second propons steering hardware also comprises pressure transmission system, steering wheel angle sensor and control unit, and described steering wheel angle sensor sends angular signal for after the turn sign that receives the first propons steering hardware and send to described 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 controls described pressure transmission system action according to the angular signal that described steering wheel angle sensor exports.
2. double-front axle automobile steering system according to claim 1, it is characterized in that, the piston rod of described pressure cylinder is provided with the stroke sensor for detecting piston rod position, the position signal detected is fed back to described control unit by described stroke sensor, with when described control unit controls described pressure transmission system action according to the angular signal that described steering wheel angle sensor exports, make the piston rod movement of described pressure cylinder on the position corresponding with described angular signal.
3. double-front axle automobile steering system according to claim 1 and 2, is characterized in that, described pressure transmission system comprise be connected to described pressure cylinder circulation line on the flow-controlling gate being controlled by described control unit.
4. double-front axle automobile steering system according to claim 1 or 2, is characterized in that, described pressure transmission system is power hydraulic system.
5. double-front axle automobile steering system 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. double-front axle automobile steering system 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. double-front axle automobile steering system according to claim 1 and 2, is characterized in that, is connected between described pressure cylinder with described propons H-girder by sphere-pin pair.
8. double-front axle automobile steering system according to claim 1 and 2, is characterized in that, the piston rod of described pressure cylinder is connected by sphere-pin pair with between one of them steering trapezoidal arm.
9. double-front axle automobile steering system according to claim 1 and 2, 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.
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| 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 |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410214085.3A 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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| CN103979011A CN103979011A (en) | 2014-08-13 |
| CN103979011B true CN103979011B (en) | 2016-04-06 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN115570920A (en) * | 2022-08-30 | 2023-01-06 | 祁凤凯 | Rear axle and chassis |
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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. |