CN209956058U - Wire control steering mechanism for electric wheel driven automobile - Google Patents
Wire control steering mechanism for electric wheel driven automobile Download PDFInfo
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- CN209956058U CN209956058U CN201920847200.9U CN201920847200U CN209956058U CN 209956058 U CN209956058 U CN 209956058U CN 201920847200 U CN201920847200 U CN 201920847200U CN 209956058 U CN209956058 U CN 209956058U
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- electric wheel
- steering
- steering knuckle
- cross arm
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Abstract
The utility model discloses a steer-by-wire mechanism for electric wheel drive car, include: an electric wheel having a motor shaft at the coaxial center thereof; the center of the steering knuckle is provided with a first connecting hole, and the motor shaft is sleeved in the first connecting hole; the bulge is vertically arranged on the steering knuckle, and a second connecting hole is formed in the bulge; the turbine shaft is vertically fixed in the second connecting hole; the motor base is arranged on the steering knuckle and can rotate relative to the steering knuckle; one end of the lower cross arm is connected with the vehicle body, and the other end of the lower cross arm is hinged with the motor base; and the steering motor is arranged on the motor base, the output end of the steering motor is provided with a worm, and the worm is meshed with the turbine shaft. The utility model provides a steer-by-wire mechanism for electric wheel drive car adopts the telex to connect, turns to through steering motor, worm gear structure direct drive wheel.
Description
Technical Field
The utility model relates to a car a steering system technique, concretely relates to drive-by-wire steering mechanism for electric wheel drive car.
Background
An automotive steering system is a series of devices used to change or maintain the direction of travel or reverse of an automobile. The function of the steering system of the automobile is to control the driving direction of the automobile according to the intention of the driver. The automobile steering system is important to the driving safety of the automobile, so the automobile steering system is a system which must be considered for the automobile safety.
At present, automobile steering systems are divided into two main categories: mechanical steering systems and power steering systems.
Mechanical steering systems use the driver's physical strength as the steering energy source, where all force transmitting members are mechanical. The mechanical steering system consists of three parts, namely a steering control mechanism, a steering gear and a steering transmission mechanism. The power steering system is a steering system which uses both driver physical power and engine power as steering energy. Under normal conditions, only a small portion of the energy required for steering the vehicle is provided by the driver, while the majority is provided by the engine through the power steering. However, in the event of a failure of the power steering system, the driver should generally be able to undertake the steering task of the vehicle independently. Therefore, the power steering system is formed by adding a set of power steering device to the mechanical steering system. However, as people continuously explore the unmanned technology, the power-assisted steering structure cannot meet the technical development requirements of the future intelligent vehicle.
SUMMERY OF THE UTILITY MODEL
The utility model provides a steer-by-wire mechanism for an electric wheel drive automobile, which solves the technical defects at present, adopts teletype connection, and directly drives wheels to steer through a steering motor and a worm and gear structure;
the utility model provides a technical scheme does: a steer-by-wire mechanism for an electric wheel drive vehicle, comprising:
an electric wheel having a motor shaft at the coaxial center thereof;
the center of the steering knuckle is provided with a first connecting hole, and the motor shaft is sleeved in the first connecting hole;
the bulge is vertically arranged on the steering knuckle, and a second connecting hole is formed in the bulge;
the turbine shaft is vertically fixed in the second connecting hole;
the motor base is arranged on the steering knuckle and can rotate relative to the steering knuckle;
one end of the lower cross arm is connected with the vehicle body, and the other end of the lower cross arm is hinged with the motor base;
and the steering motor is arranged on the motor base, the output end of the steering motor is provided with a worm, and the worm is meshed with the turbine shaft.
Preferably, the method further comprises the following steps:
and the upper cross arm is arranged in parallel to the lower cross arm, one end of the upper cross arm is connected with the vehicle body, and the other end of the upper cross arm is hinged with the steering knuckle.
It is preferable that the first and second liquid crystal layers are formed of,
one end of the steering knuckle is provided with a third connecting hole along the vertical direction; and
further comprising: and the spherical hinge is arranged in the third connecting hole in a matching manner and is used for fixedly connecting the upper cross arm.
It is preferable that the first and second liquid crystal layers are formed of,
a fourth connecting hole is vertically formed in the other end of the steering knuckle;
a through hole is formed in the middle of the motor base; and
further comprising: and the vertical shaft is arranged in the fourth connecting hole and the through hole in a matching manner.
It is preferable that the first and second liquid crystal layers are formed of,
two fifth connecting holes are formed in the same side of the steering knuckle; and
further comprising: and the brake caliper is fixed on the side surface of the steering knuckle through the fifth connecting hole.
Preferably, the method further comprises the following steps:
and one end of the spring shock absorber is fixed on the lower cross arm, and the other end of the spring shock absorber is fixedly connected with the vehicle body.
Preferably, centers of the second connecting hole, the third connecting hole and the fourth connecting hole are collinear.
Preferably, the method further comprises the following steps:
and the brake disc is coaxially fixed on the shell of the electric wheel and is arranged at the same side as the steering knuckle.
Beneficial effect:
1. by adopting the worm and gear speed reducing mechanism, reverse self-locking of the system can be realized through proper design, namely, the worm can drive the worm gear to rotate, and the worm gear cannot drive the worm in reverse. The wheels may be locked against rotation when the vehicle is powered down.
2. The system integration level is high, and drive, turn to, braking system integration in a module, simple structure.
3. The steer-by-wire system cancels the mechanical connection among all the components, adopts electric signals to link all the components, and is convenient for the intelligent development of the future automobile.
Drawings
Fig. 1 is a schematic view of a steer-by-wire mechanism for an electric wheel drive vehicle according to the present invention.
Fig. 2 is a schematic view of a steering knuckle of a steer-by-wire mechanism for an electric wheel drive vehicle according to the present invention.
Fig. 3 is a schematic diagram of a motor base of the steer-by-wire mechanism for an electric wheel drive automobile according to the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
As shown in fig. 1, the utility model discloses a steer-by-wire mechanism for electric wheel drive car, include: electric wheel 100, the coaxial motor shaft that sets up in center of electric wheel 100, the end of motor shaft has the screw thread, knuckle 200 sets up in one side of electric wheel 100, has the drive division of being connected with electric wheel motor shaft and the steering part of being connected with steering mechanism, the concrete first connecting hole 251 in knuckle 200 center, the motor shaft is connected through the first connecting hole 251 of the drive division of parallel key cooperation and knuckle 200, it is spacing that the motor shaft of electric wheel 100 is terminal through gland nut. As shown in fig. 2, a protrusion 240 is provided at the middle of the knuckle 200, the protrusion 240 is horizontally provided, and a second coupling hole 252 is provided in the protrusion 240 in a vertical direction. The turbine shaft 220 is arranged in the second connecting hole 252 in a matching manner, one end of the turbine shaft 220 is a key groove shaft, the other end of the turbine shaft 220 is provided with a thread, the tail end of the thread is provided with a thread, and the nut is used for fastening and limiting. The motor base 230 is arranged on the steering knuckle 200 and can rotate relative to the steering knuckle 200; one end of the lower cross arm 420 is connected with the vehicle body, and the other end is hinged with the motor base 230 through a shaft pin; the lower cross arm 420 may be hinged about a hinge point. The steering motor 300 is arranged on the motor base 230, the output end of the steering motor 300 is provided with a worm 310, and the worm 310 is meshed with the turbine shaft 220.
The upper cross arm 410 is disposed parallel to the lower cross arm 420, and one end of the upper cross arm 410 is connected to the vehicle body and the other end is hinged to the knuckle 200.
As shown in fig. 2, one end of the knuckle 200 is provided with a third connection hole 253 in a vertical direction; a spherical hinge 411 is arranged in the third connecting hole 253 in a matching manner, and the spherical hinge 411 is fixedly connected with the upper cross arm 410.
The other end of the knuckle 200 is provided with a fourth connecting hole 254; as shown in fig. 3, a through hole 231 is provided in the middle of the motor base 230; the vertical shaft 232 is arranged in the fourth connecting hole 254 and the through hole 231 in a matching mode. The vertical shaft 232 passes through the through hole 231 of the motor base 230 and the fourth connecting hole 254 of the steering part of the knuckle 200 to connect the two, and the lower end of the vertical shaft 232 is provided with a thread and is fastened and limited by a nut.
Two fifth connecting holes 255 are formed in one side of the knuckle 200; the brake caliper 210 is fixed to the fifth connection hole 255 by a bolt, and is fixed to a side surface of the knuckle 200.
Centers of the second connecting hole 252, the third connecting hole 253 and the fourth connecting hole 254 are collinear.
The brake disc 110 is coaxially fixed to the housing of the electric wheel, and is disposed on the same side as the knuckle. The brake disc rotates along with the wheel, and the position of the brake caliper is fixed. When the vehicle brakes, the brake calipers clamp the brake disc under the pushing of hydraulic pressure, so that the brake disc and the wheel stop rotating, and the vehicle brake is realized.
One end of the spring damper 500 is fixed on the lower cross arm 420, and the other end is fixedly connected with the vehicle body.
When the driver intends to keep the vehicle running in a fixed direction, the steering motor 300 does not work, and the vehicle does not change the original running direction at this time because the worm gear has a self-locking characteristic, that is, the turbine shaft 220 cannot drive the worm 310 to rotate. When the driver intends to change the driving direction of the vehicle, the steering motor 300 is operated, and the output shaft worm 310 thereof rotates to rotate the turbine shaft 220 engaged therewith. The worm-gear shaft 220 is fixed on the second connecting hole 252 of the steering part of the steering knuckle 200 through a flat key, and the worm-gear shaft 220 rotates to drive the steering knuckle 200 to rotate around the axes of the second connecting hole 252, the third connecting hole 253 and the fourth connecting hole 254, wherein the axis is the main pin axis. The electric wheel 100 fixedly connected with the steering knuckle 200 rotates along with the rotation of the electric wheel, and the vehicle steering is realized. The ball joint 411 and vertical axle 232 ensure that the wheel can rotate about the king pin axis. During steering, the motor base 230, the upper cross arm 410 and the lower cross arm 420 are kept stationary relative to the vehicle body. When the vehicle runs on an uneven road surface, the wheel can jump up and down through the spherical hinge 411 and the pin shaft connecting the motor base 230 and the lower cross arm 420.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (8)
1. A steer-by-wire mechanism for an electric wheel drive vehicle, comprising:
an electric wheel having a motor shaft at the coaxial center thereof;
the center of the steering knuckle is provided with a first connecting hole, and the motor shaft is sleeved in the first connecting hole;
the bulge is vertically arranged on the steering knuckle, and a second connecting hole is formed in the bulge;
the turbine shaft is vertically fixed in the second connecting hole;
the motor base is arranged on the steering knuckle and can rotate relative to the steering knuckle;
one end of the lower cross arm is connected with the vehicle body, and the other end of the lower cross arm is hinged with the motor base;
and the steering motor is arranged on the motor base, the output end of the steering motor is provided with a worm, and the worm is meshed with the turbine shaft.
2. The steer-by-wire mechanism for an electric wheel drive automobile according to claim 1, further comprising:
and the upper cross arm is arranged in parallel to the lower cross arm, one end of the upper cross arm is connected with the vehicle body, and the other end of the upper cross arm is hinged with the steering knuckle.
3. The steer-by-wire mechanism for an electric wheel drive automobile according to claim 2,
one end of the steering knuckle is provided with a third connecting hole along the vertical direction; and
further comprising: and the spherical hinge is arranged in the third connecting hole in a matching manner and is used for fixedly connecting the upper cross arm.
4. The steer-by-wire mechanism for an electric wheel drive automobile according to claim 3,
a fourth connecting hole is vertically formed in the other end of the steering knuckle;
a through hole is formed in the middle of the motor base; and
further comprising: and the vertical shaft is arranged in the fourth connecting hole and the through hole in a matching manner.
5. The steer-by-wire mechanism for an electric wheel drive automobile according to claim 4,
two fifth connecting holes are formed in the same side of the steering knuckle; and
further comprising: and the brake caliper is fixed on the side surface of the steering knuckle through the fifth connecting hole.
6. The steer-by-wire mechanism for an electric wheel drive automobile according to claim 5, further comprising:
and one end of the spring shock absorber is fixed on the lower cross arm, and the other end of the spring shock absorber is fixedly connected with the vehicle body.
7. The steer-by-wire mechanism for an electric wheel drive automobile according to claim 6,
the centers of the second connecting hole, the third connecting hole and the fourth connecting hole are collinear.
8. The steer-by-wire mechanism for an electric wheel drive automobile according to claim 7, further comprising:
and the brake disc is coaxially fixed on the shell of the electric wheel and is arranged at the same side as the steering knuckle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920847200.9U CN209956058U (en) | 2019-06-06 | 2019-06-06 | Wire control steering mechanism for electric wheel driven automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920847200.9U CN209956058U (en) | 2019-06-06 | 2019-06-06 | Wire control steering mechanism for electric wheel driven automobile |
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| Publication Number | Publication Date |
|---|---|
| CN209956058U true CN209956058U (en) | 2020-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920847200.9U Active CN209956058U (en) | 2019-06-06 | 2019-06-06 | Wire control steering mechanism for electric wheel driven automobile |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110053660A (en) * | 2019-06-06 | 2019-07-26 | 吉林大学 | A kind of steering-by-wire mechanism and its control method for electric wheel drive vehicle |
| CN112721894A (en) * | 2021-01-21 | 2021-04-30 | 江苏大学 | Three-motor integrated high-reliability intelligent linear control system and control method thereof |
| CN113815722A (en) * | 2021-11-11 | 2021-12-21 | 吉林大学 | Double-motor steering mechanism and redundancy control method thereof |
| KR102413236B1 (en) * | 2021-02-09 | 2022-06-24 | 서한산업(주) | Steering system |
-
2019
- 2019-06-06 CN CN201920847200.9U patent/CN209956058U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110053660A (en) * | 2019-06-06 | 2019-07-26 | 吉林大学 | A kind of steering-by-wire mechanism and its control method for electric wheel drive vehicle |
| CN110053660B (en) * | 2019-06-06 | 2024-02-06 | 吉林大学 | Drive-by-wire steering mechanism for electric wheel drive automobile and control method thereof |
| CN112721894A (en) * | 2021-01-21 | 2021-04-30 | 江苏大学 | Three-motor integrated high-reliability intelligent linear control system and control method thereof |
| KR102413236B1 (en) * | 2021-02-09 | 2022-06-24 | 서한산업(주) | Steering system |
| CN113815722A (en) * | 2021-11-11 | 2021-12-21 | 吉林大学 | Double-motor steering mechanism and redundancy control method thereof |
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