CN220180913U - Electrohydraulic transmission drive-by-wire system and vehicle - Google Patents
Electrohydraulic transmission drive-by-wire system and vehicle Download PDFInfo
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- CN220180913U CN220180913U CN202321590453.5U CN202321590453U CN220180913U CN 220180913 U CN220180913 U CN 220180913U CN 202321590453 U CN202321590453 U CN 202321590453U CN 220180913 U CN220180913 U CN 220180913U
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- 230000007246 mechanism Effects 0.000 claims abstract description 82
- 230000033001 locomotion Effects 0.000 claims description 22
- 239000010720 hydraulic oil Substances 0.000 claims description 13
- 238000009434 installation Methods 0.000 abstract description 3
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Abstract
The utility model discloses an electrohydraulic transmission drive-by-wire system and a vehicle, which comprise a steering wheel assembly, a steering gear assembly, an electric mechanism and a hydraulic mechanism, wherein the electric mechanism and the hydraulic mechanism are arranged between an operating rod of the steering wheel and an input shaft of the steering gear assembly, the first gear and the second gear are matched, constant-speed transmission between the steering wheel and the steering gear is realized, the electric mechanism is used as a main transmission mode, the hydraulic mechanism is used as a redundant transmission mode, when a motor stops working, the safety of the system is ensured by transmitting the torque of the steering wheel through the hydraulic, the emergency steering requirement is met, meanwhile, the existing steering transmission shaft is omitted, the air tightness and the noise of a cab are improved, the leg space of a driver is increased, the installation height of an electric control hydraulic steering gear and the turnover requirement of the cab are met, in addition, the drive-by drive-by system cancels a road feedback motor, the cost and the complexity of software are reduced, and popularization and implementation are facilitated.
Description
Technical Field
The utility model belongs to the technical field of steering of automobile chassis, and particularly relates to an electrohydraulic transmission drive-by-wire system and a vehicle.
Background
Most of the existing vehicles on the market transmit rotation of a steering wheel through a steering transmission shaft to transmit torque to a rack-and-pinion mechanism, so that wheels are pushed to rotate leftwards or rightwards. The steering transmission shaft is a telescopic hard rod, needs to penetrate through a cab bottom plate to influence the sealing performance of a cab, needs to be additionally provided with a shield to ensure the attractiveness and influence the leg space of a driver, and in addition, has high requirements on arrangement angles to ensure constant-speed transmission, increases the height of the steering gear along with the use of an electric control steering gear, and is difficult to design the length of the steering transmission shaft to simultaneously meet the overturning requirement of the cab.
Based on the above-mentioned drawbacks, the prior art proposes a new drive-by-wire system, including an electronic control unit, a torque sensor, a steering angle sensor, a torque feedback motor (road sensing motor), a steering motor, a vehicle speed sensor, an angular displacement sensor, etc., but the road sensing motor needs to be added, road feedback is simulated, and the steering wheel rotation moment cannot be transmitted, and an additional device is needed to ensure functional safety, and the cost is high, which is unfavorable for popularization.
Disclosure of Invention
Aiming at the problems, the utility model mainly aims to design an electrohydraulic transmission drive-by-wire system and a vehicle, cancel the existing steering transmission shaft, adopt an electric and hydraulic transmission mode and solve the problems that in the prior art, the sealing performance of a cab is poor, the arrangement space is large, the leg space of a driver is influenced, and the overturning requirement of the cab and the single steering speed ratio are inconvenient to meet due to the connection of a mechanical mechanism.
The utility model adopts the following technical scheme for realizing the purposes:
an electro-hydraulic drive-by-wire system transfers rotation of a steering wheel to an input shaft of a steering assembly, a lower portion of the steering wheel including an operating lever.
The transmission drive-by-wire system comprises an electric mechanism and a hydraulic mechanism;
the electric mechanism comprises a motor, wherein the motor is connected to an input shaft of the steering gear assembly and is controlled to rotate by a controller;
the hydraulic mechanism comprises a first transmission mechanism for realizing the rotation motion to the linear motion of the steering wheel and a second transmission mechanism for realizing the linear motion to the rotation motion of the first transmission mechanism, and the first transmission mechanism is communicated with the second transmission mechanism through a hydraulic pipe;
the first transmission mechanism comprises a first moving end and a first rotating end which are in transmission connection, and the first rotating end is connected with an operating rod of the steering wheel;
the second transmission mechanism comprises a second moving end and a second rotating end which are in transmission connection, and the second rotating end is connected with an input shaft of the steering gear assembly;
the hydraulic pipe is internally provided with hydraulic oil for transmitting power, the first moving end and the second moving end comprise hydraulic cylinders matched with the hydraulic pipe, and the hydraulic cylinders are respectively arranged at two ends of the hydraulic pipe.
As a further description of the present utility model, the drive-by-wire system further includes a rotation angle torque sensor that is provided on the operation lever of the steering wheel and receives a vehicle speed signal and a signal of the rotation angle torque sensor through the controller.
As a further description of the utility model, the first and second rotational ends are configured as a rack and pinion mechanism or a worm and gear mechanism;
the first moving end and the second moving end comprise pistons, and the pistons push hydraulic oil in the hydraulic cylinder to transmit power between the two pistons through the hydraulic pipe; wherein the hydraulic pipe is a hose.
As a further description of the present utility model, the first rotating end includes a first gear connected to a lower portion of the steering wheel lever and a first rack engaged with the first gear.
As a further description of the present utility model, the first moving end includes a first hydraulic cylinder, a first piston is disposed inside the first hydraulic cylinder, two ends of the first piston are respectively connected to two ends of the first rack, and the first piston moves in the first hydraulic cylinder through movement of the first rack.
As a further description of the utility model, the second rotary end includes a second gear coupled to an upper portion of the input shaft of the steering assembly and a second rack gear engaged with the second gear.
As a further description of the present utility model, the second moving end includes a second hydraulic cylinder, a second piston is disposed inside the second hydraulic cylinder, two ends of the second piston are respectively connected to two ends of the second rack, and the second piston moves in the second hydraulic cylinder through movement of the second rack.
As a further description of the utility model, the number of the hydraulic pipes is two, namely a first hydraulic pipe and a second hydraulic pipe, two ends of the first hydraulic pipe are respectively communicated with one side of the first hydraulic cylinder and one side of the second hydraulic cylinder, and two ends of the second hydraulic pipe are respectively communicated with the other side of the first hydraulic cylinder and the other side of the second hydraulic cylinder;
the first piston is arranged at the middle position of the joint of the first hydraulic pipe and the second hydraulic pipe and the first hydraulic cylinder respectively, and the second piston is arranged at the middle position of the joint of the first hydraulic pipe and the second hydraulic cylinder respectively.
As a further description of the utility model, the input shaft of the steering assembly is connected to the motor via a gear set or worm gear mechanism;
the input shaft of the steering gear assembly is provided with a third gear, the rotating shaft of the motor is provided with a fourth gear, the third gear is meshed with the fourth gear, and the input shaft of the steering gear assembly is driven to rotate through rotation of the motor.
In addition, it is another object of the present embodiment to provide a vehicle including the drive-by-wire system described above.
Compared with the prior art, the utility model has the technical effects that:
the utility model provides an electrohydraulic transmission drive-by-wire system and a vehicle, which adopt the matching arrangement of a first gear and a second gear, can realize constant-speed transmission, take an electric mechanism as a main transmission mode, take a hydraulic mechanism as a redundant transmission mode, transmit the torque of a steering wheel through the hydraulic mechanism when a motor stops working, ensure the safety of the system, meet the emergency steering requirement, cancel the existing steering transmission shaft, improve the air tightness and noise of a cab, increase the leg space of a driver, meet the installation height of an electric control hydraulic steering gear and the overturning requirement of the cab, and cancel a road feel feedback motor by the transmission drive-by-wire system, reduce the cost and the complexity of software, and be beneficial to popularization and implementation.
Drawings
FIG. 1 is a schematic diagram of a drive-by-wire system of the present utility model;
FIG. 2 is a view showing the first and second transmission mechanisms of the present utility model;
FIG. 3 is a view of the motor and diverter assembly of the present utility model in a mated configuration;
fig. 4 is a block diagram of the drive-by-wire system workflow of the present utility model.
In the drawings, 1, a steering wheel, 11, an operating lever, 2, a steering assembly, 21, a third gear, 3, a rotational angle torque sensor, 4, a controller, 5, a motor, 51, a fourth gear, 6, a hydraulic pipe, 61, a first hydraulic pipe, 62, a second hydraulic pipe, 7, a hydraulic cylinder, 71, a first hydraulic cylinder, 72, a second hydraulic cylinder, 8, a piston, 81, a first piston, 82, a second piston, 101, a first gear, 102, a first rack, 201, a second gear, 202, and a second rack.
Detailed Description
The utility model is described in detail below with reference to the attached drawing figures:
in one embodiment of the present utility model, an electrohydraulic drive-by-wire system is disclosed for transmitting rotation of a steering wheel 1 to an input shaft of a steering assembly 2 to effect steering of a vehicle, the lower portion of the steering wheel 1 includes an operating lever 11, as shown in fig. 1-4, the drive-by-wire system may further include a steering angle torque sensor 3, a controller 4, and a power mechanism, the steering angle torque sensor 3 being disposed on the operating lever 11 of the steering wheel 1, and receiving a vehicle speed signal and a signal of the steering angle torque sensor 3 through the controller 4.
Specifically, in this embodiment, the power mechanism includes an electric mechanism and a hydraulic mechanism; the electric mechanism comprises a motor 5, wherein the motor 5 is connected to an input shaft of the steering gear assembly 2, and the rotation of the motor 5 is controlled by a controller 4; the hydraulic mechanism comprises a first transmission mechanism for realizing the rotation motion to the linear motion of the steering wheel 1 and a second transmission mechanism for realizing the linear motion to the rotation motion of the first transmission mechanism, and the first transmission mechanism is communicated with the second transmission mechanism through a hydraulic pipe 6; the first transmission mechanism comprises a first moving end and a first rotating end which are in transmission connection, and the first rotating end is connected with an operating rod 11 of the steering wheel 1; the second transmission mechanism comprises a second moving end and a second rotating end which are in transmission connection, and the second rotating end is connected with an input shaft of the steering gear assembly 2; the hydraulic pipe 6 is internally provided with hydraulic oil for transmitting power, the first moving end and the second moving end respectively comprise a hydraulic cylinder 7 matched with the hydraulic pipe 6, and the hydraulic cylinders 7 are respectively arranged at two ends of the hydraulic pipe 6 so as to transmit power through the hydraulic oil.
The power mechanism of the transmission drive-by-wire system of the embodiment is combined with the first transmission mechanism capable of converting the rotary motion and the linear motion into the rotary motion and the second power mechanism capable of converting the linear motion of the first transmission mechanism into the rotary motion, and the hydraulic oil in the hydraulic pipe 6 is used for transmitting power and system torque, so that the motion connection of pure machinery is canceled, the arrangement space requirement is reduced, the operation space of a driver is improved, and the overturning requirement of the cab is met. In addition, the transmission drive-by-wire system of the embodiment uses the electric mechanism as a main transmission mode, the hydraulic mechanism is used as a redundant transmission mode, and when the motor stops working, the torque of the steering wheel 1 is transmitted through the hydraulic mechanism, so that the safety of the system is ensured, and the emergency steering requirement is met.
In addition, since the first transmission mechanism and the second transmission mechanism are arranged on two sides of the hydraulic pipe 6 in the embodiment, and the first transmission mechanism and the second transmission mechanism both comprise a moving end and a rotating end, the moving ends of the two transmission mechanisms can transmit power through hydraulic oil, so that power can be mutually transmitted between the steering wheel 1 and the steering gear assembly 2, the implementation feedback of the torque of the steering wheel 1 and the torque of the input shaft of the steering gear assembly 2 is realized, and the real-time road sense feedback is completed.
Specifically, the first rotating end and the second rotating end are arranged as a gear rack mechanism or a worm gear mechanism;
the first moving end and the second moving end both comprise pistons 8, and the pistons 8 push hydraulic oil in the hydraulic cylinders 7 to transmit power between the two pistons 8 through the hydraulic pipes 6; wherein the hydraulic pipe 6 is a hose.
The flexible pipe can be bent, so that the position and distance relation of the components of the whole drive-by-wire system can be adjusted at will, the volume of the drive-by-wire system is reduced under the condition of meeting the functional requirement, and the quality of the drive-by-wire system is reduced.
It should be noted that, in the present embodiment, the first rotating end includes the first gear 101 and the first rack 102, and the first moving end includes the first hydraulic cylinder 71 and the first piston 81; the first gear 101 is connected to the lower portion of the lever 11 of the steering wheel 1, the first rack 102 is meshed with the first gear 101, both ends of the first rack 102 are connected to both ends of the first piston 81, respectively, the first hydraulic cylinder 71 is configured as a double-acting cylinder, and the first piston 81 moves within the first hydraulic cylinder 71.
In this embodiment, the second rotating end includes a second gear 201 and a second rack 202, and the second moving end includes a second hydraulic cylinder 72 and a second piston 82; the second gear 201 is connected to the upper portion of the input shaft of the steering gear assembly 2, the second rack 202 is meshed with the second gear 201, two ends of the second rack 202 are respectively connected to two ends of the second piston 82, the second hydraulic cylinder 72 is configured as a double-acting cylinder, and the second piston 82 moves within the second hydraulic cylinder 72.
The number of the hydraulic pipes 6 is two, namely a first hydraulic pipe 61 and a second hydraulic pipe 62, wherein two ends of the first hydraulic pipe 61 are respectively communicated with the left sides of the first hydraulic cylinder 71 and the second hydraulic cylinder 72, and two ends of the second hydraulic pipe 62 are respectively communicated with the right sides of the first hydraulic cylinder 71 and the second hydraulic cylinder 72;
the first piston 81 is disposed at an intermediate position of the connection between the first hydraulic pipe 61 and the second hydraulic pipe 62 and the first hydraulic cylinder 71, and the second piston 82 is disposed at an intermediate position of the connection between the first hydraulic pipe 61 and the second hydraulic pipe 62 and the second hydraulic cylinder 72.
The connection between the hydraulic pipe 61 and the first and second hydraulic cylinders 71 and 72 is not limited to the above-mentioned arrangement, and may be adjusted according to practical situations, and specifically includes that two ends of the first hydraulic pipe 61 are respectively connected to the left side of the first hydraulic cylinder 71 and the right side of the second hydraulic cylinder 72, and two ends of the second hydraulic pipe 62 are respectively connected to the right side of the first hydraulic cylinder 71 and the left side of the second hydraulic cylinder 72, or other connection forms.
In this embodiment, the first gear 101 and the second gear 201 are configured as pinion gears, when the steering wheel 1 rotates, the operating lever 11 drives the first gear 101 to rotate, the first rack 102 translates under the drive of the first gear 101, and the first piston 81 can move in the first hydraulic cylinder 71 along with the first rack 102. When the steering wheel 1 rotates to drive the first rack 102 to translate leftwards, at this time, the first piston 81 pushes leftwards, so that the hydraulic oil in the first hydraulic cylinder 71 is extruded to the left side in the second hydraulic cylinder 72 along with the first hydraulic pipe 61, and pushes the second piston 82 to move rightwards, at this time, the second rack 202 is pushed rightwards, so as to drive the second gear 201 to rotate, and when the second gear 201 rotates, the second gear 201 drives the input shaft of the steering gear assembly 2 to rotate.
In addition, the input shaft of the steering gear assembly 2 is connected with the motor 5 through a gear set or a worm gear mechanism; in this embodiment, the input shaft of the steering gear assembly 2 is provided with a third gear 21, the rotating shaft of the motor 5 is provided with a fourth gear 51, the third gear 21 is meshed with the fourth gear 51, and the rotation of the motor 5 drives the input shaft of the steering gear assembly 2 to rotate. The third gear 21 is a large gear, the fourth gear 51 is a small gear, which increases the transmission ratio, decreases the high rotation speed of the motor 5, and increases the accuracy of the control, and the description of the "large gear" and the "small gear" in the present embodiment is described with respect to the cooperation with the rack, and the present embodiment is not limited to the specific size.
In order to ensure the reduction ratio, in this embodiment, the rotation speed of the motor 5 is relatively high, a large reduction ratio is required to reduce the speed, and by setting the fourth gear 51 as a small gear and the third gear 21 as a large gear, the speed of the motor 5 transmitted to the input shaft of the steering gear assembly 2 can be effectively reduced; the speed ratio of the transmission drive-by-wire system can be effectively adjusted through the cylinder diameters of the first hydraulic cylinder 71 and the second hydraulic cylinder 72, the specific speed ratio is selected, and the factors influencing the speed ratio selection are mainly the response performance and road feel of the whole vehicle according to the adjustment and the determination of the performance of the real vehicle.
The working principle of the electric mechanism in this embodiment is as follows: when the whole vehicle is electrified, the corner torque sensor 3 sends corner and torque information to the controller 4, and the controller 4 sends the corner and torque information to the motor 5;
when the vehicle is in an intelligent driving mode, an angle control logic is adopted, and the motor 5 receives a rotation angle instruction sent by the controller 4 and rotates according to the instruction;
when the vehicle is in a manual driving mode, torque control logic is adopted, the motor 5 receives a torque instruction sent by the controller, a certain torque is output, a rotation angle difference value is used as monitoring, and when the rotation angle difference value is overlarge, the motor 5 is indicated to have faults or overlarge ground resistance or faults of the steering gear assembly 2, and the warning is needed to be given to a driver;
and when different vehicle speeds are used, safety limit values are set for the rotation angle and the torque so as to ensure the running safety of the vehicle.
The steering gear assembly 2 can be a traditional hydraulic circulating ball steering gear, a gear rack steering gear, an electric control hydraulic circulating ball steering gear or a pure electric steering gear used for intelligent driving, and when the steering gear assembly is the traditional hydraulic steering gear, the intelligent driving requirement of L2 level and below can be met; when the steering device is used for electric control hydraulic circulating ball or pure electric steering, the steering device can not have redundancy, and the whole steering system can meet the intelligent driving requirement of L3 and above.
The steering angle torque sensor 3 mainly detects the hand force of the steering wheel 1, and can change steering hand force through adjusting the output of the motor 5 and the speed ratio of the hydraulic cylinder 7 or the first gear 101, the second gear 201 and the third gear 21, so as to realize different handfeel.
The working principle of the hydraulic mechanism in this embodiment: when the vehicle passes through a bumpy road surface, the bumpy road surface is reversely transferred to the steering wheel 1 through the hydraulic mechanism to play a role of the torque feedback motor 5, and the force of the bumpy road surface fed back to the steering wheel 1 can be reduced by utilizing the expansibility of the hydraulic mechanism, so that a driver of the steering wheel 1 is avoided;
the hydraulic mechanism of the transmission drive-by-wire system can not control the vehicle when the line is broken; when a road sensing motor (the road sensing motor in a wire control system in the prior art is usually arranged at the lower end of a steering wheel) is damaged, a driver turns without handfeel, and after a hydraulic transmission mechanism is added, when the motor 5 fails, the driver drives an input shaft of a steering gear assembly 2 to rotate through hydraulic transmission, so that the safety redundancy function is realized, and the safety requirement of the whole vehicle is met; and the transmission drive-by-wire system utilizes the expansibility of the hydraulic mechanism, and can not interfere the operation of the motor 5 when the motor 5 works normally.
In another embodiment of the present utility model, a vehicle is disclosed, which includes the above-mentioned electro-hydraulic drive-by-wire system, and the specific functions of vehicle steering and return are disclosed as follows:
the driver turns the steering wheel 1 to twist the operation lever 11, and the rotation angle torque sensor 3 outputs torque information and rotation angle information;
the controller 4 receives torque information, rotation angle information, vehicle speed information and driving mode information, and then the controller 4 controls the motor 5 to drive the input shaft of the steering gear assembly 2 to rotate, so that the steering requirement of the vehicle is met;
when the motor 5 fails, the operating rod 11 drives the first gear 101 in the first transmission mechanism to rotate, hydraulic oil in the hydraulic pipe 6 flows into the second transmission mechanism to push the second rack 202 and the second gear 201 in the second transmission mechanism to move, and then the input shaft of the steering gear assembly 2 is driven to rotate, so that the steering requirement of the vehicle is met.
When the steering wheel is in return, the wheel is driven to rotate towards the middle position by the return moment of the wheel, the steering rocker is driven to rotate by the pull rod of the steering system in the prior art, the output shaft of the steering device assembly 2 is driven to rotate, the input shaft of the steering device assembly 2 is driven to rotate, the second gear 201 on the input shaft of the steering device assembly 2 drives the second rack 202 to move, the second piston 82 is driven to move in the second hydraulic cylinder 72, hydraulic oil is pressed into the first hydraulic cylinder 71, the first piston 81 moves through the entering of the hydraulic oil, the first rack 102 is driven to rotate, the first gear 101 meshed with the first rack 102 rotates when the first rack 102 rotates, and the operating rod 11 of the steering wheel 1 rotates, so that the steering wheel 1 is returned.
Compared with the prior art, the technical scheme disclosed by the utility model has the following advantages:
1. according to the transmission drive-by-wire system disclosed by the utility model, constant-speed transmission can be realized through the arrangement of the first gear, the second gear, the third gear and the cylinder diameter of the hydraulic cylinder;
2. according to the transmission drive-by-wire system disclosed by the utility model, a transmission shaft via hole at the bottom of the cab is eliminated, and the air tightness and noise of the cab are improved;
3. the transmission drive-by-wire system disclosed by the utility model has the advantages that the steering transmission shaft and the sheath are canceled, and the leg space of a driver is improved;
4. according to the transmission drive-by-wire system disclosed by the utility model, the requirements of the installation height of the electric control hydraulic steering gear and the overturning of the cab can be met through the matching of the electric mechanism and the hydraulic mechanism;
5. the transmission drive-by-wire system disclosed by the utility model has the advantages that a road feel feedback motor is eliminated, and the cost and the complexity of software are reduced;
6. the transmission drive-by-wire system disclosed by the utility model has a redundancy function and high safety through the cooperation of the electric mechanism and the hydraulic mechanism.
The above embodiments are only for illustrating the technical solution of the present utility model, but not for limiting, and other modifications and equivalents thereof by those skilled in the art should be included in the scope of the claims of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.
Claims (10)
1. An electrohydraulic drive-by-wire system for transmitting rotation of a steering wheel to an input shaft of a steering assembly, the lower portion of the steering wheel including an operating lever, characterized in that: the transmission drive-by-wire system comprises an electric mechanism and a hydraulic mechanism;
the electric mechanism comprises a motor, wherein the motor is connected to an input shaft of the steering gear assembly and is controlled to rotate by a controller;
the hydraulic mechanism comprises a first transmission mechanism for realizing the rotation motion to the linear motion of the steering wheel and a second transmission mechanism for realizing the linear motion to the rotation motion of the first transmission mechanism, and the first transmission mechanism is communicated with the second transmission mechanism through a hydraulic pipe;
the first transmission mechanism comprises a first moving end and a first rotating end which are in transmission connection, and the first rotating end is connected with an operating rod of the steering wheel;
the second transmission mechanism comprises a second moving end and a second rotating end which are in transmission connection, and the second rotating end is connected with an input shaft of the steering gear assembly;
the hydraulic pipe is internally provided with hydraulic oil for transmitting power, the first moving end and the second moving end comprise hydraulic cylinders matched with the hydraulic pipe, and the hydraulic cylinders are respectively arranged at two ends of the hydraulic pipe.
2. An electrohydraulic drive-by-wire system according to claim 1, wherein: the transmission drive-by-wire system further comprises a corner torque sensor, wherein the corner torque sensor is arranged on an operating rod of the steering wheel, and receives a vehicle speed signal and a signal of the corner torque sensor through the controller.
3. An electrohydraulic drive-by-wire system according to claim 1, wherein: the first rotating end and the second rotating end are arranged as a gear rack mechanism or a worm and gear mechanism;
the first moving end and the second moving end comprise pistons, and the pistons push hydraulic oil in the hydraulic cylinder to transmit power between the two pistons through the hydraulic pipe; wherein the hydraulic pipe is a hose.
4. An electrohydraulic drive-by-wire system according to claim 3, wherein: the first rotating end comprises a first gear and a first rack, the first gear is connected with the lower part of the operating rod of the steering wheel, and the first rack is meshed with the first gear.
5. An electrohydraulic drive-by-wire system according to claim 4, wherein: the first moving end comprises a first hydraulic cylinder, a first piston is arranged in the first hydraulic cylinder, two ends of the first piston are respectively connected to two ends of the first rack, and the first piston moves in the first hydraulic cylinder through movement of the first rack.
6. An electrohydraulic drive-by-wire system according to claim 5, wherein: the second rotating end comprises a second gear and a second rack, the second gear is connected with the upper part of the input shaft of the steering gear assembly, and the second rack is meshed with the second gear.
7. An electrohydraulic drive-by-wire system according to claim 6, wherein: the second moving end comprises a second hydraulic cylinder, a second piston is arranged in the second hydraulic cylinder, two ends of the second piston are respectively connected to two ends of the second rack, and the second piston moves in the second hydraulic cylinder through movement of the second rack.
8. An electrohydraulic drive-by-wire system according to claim 7, wherein: the two hydraulic pipes are respectively a first hydraulic pipe and a second hydraulic pipe, two ends of the first hydraulic pipe are respectively communicated with one side of the first hydraulic cylinder and one side of the second hydraulic cylinder, and two ends of the second hydraulic pipe are respectively communicated with the other side of the first hydraulic cylinder and the other side of the second hydraulic cylinder;
the first piston is arranged at the middle position of the joint of the first hydraulic pipe and the second hydraulic pipe and the first hydraulic cylinder respectively, and the second piston is arranged at the middle position of the joint of the first hydraulic pipe and the second hydraulic cylinder respectively.
9. An electrohydraulic drive-by-wire system according to claim 1, wherein: the input shaft of the steering gear assembly is connected with the motor through a gear set or a worm and gear mechanism;
the input shaft of the steering gear assembly is provided with a third gear, the rotating shaft of the motor is provided with a fourth gear, the third gear is meshed with the fourth gear, and the input shaft of the steering gear assembly is driven to rotate through rotation of the motor.
10. A vehicle comprising a drive-by-wire system according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321590453.5U CN220180913U (en) | 2023-06-21 | 2023-06-21 | Electrohydraulic transmission drive-by-wire system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321590453.5U CN220180913U (en) | 2023-06-21 | 2023-06-21 | Electrohydraulic transmission drive-by-wire system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220180913U true CN220180913U (en) | 2023-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321590453.5U Active CN220180913U (en) | 2023-06-21 | 2023-06-21 | Electrohydraulic transmission drive-by-wire system and vehicle |
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| Country | Link |
|---|---|
| CN (1) | CN220180913U (en) |
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2023
- 2023-06-21 CN CN202321590453.5U patent/CN220180913U/en active Active
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