A detection device for a steering wheel wire-controlled motor of an autonomous vehicle

Abstract

The utility model is a detection device for a wire-controlled motor of a steering wheel of an automatic driving vehicle, comprising a mounting frame, a detection motor and a coupling. The detection motor is arranged on the mounting frame, and a mounting position is also provided on the mounting frame. The mounting position is used to install the wire-controlled motor to be tested, and when the wire-controlled motor to be tested is installed in the mounting position, the rotating shaft of the detection motor and the rotating shaft of the wire-controlled motor to be tested are arranged relatively, and the coupling is a universal coupling, one end of the coupling is connected to the rotating shaft of the detection motor, and the other end is connected to the rotating shaft of the wire-controlled motor to be tested on the mounting position. In this embodiment, the universal coupling can make the two shafts not on the same axis, and the continuous rotation of the two connected shafts can be realized when there is an axis angle, so that the rotating shaft of the detection motor is connected with the rotating shaft of the wire-controlled motor to be tested, so that the rotating shaft of the detection motor and the rotating shaft of the wire-controlled motor to be tested do not need to be completely aligned, which greatly reduces the working difficulty of the detection personnel.

Description

Technical Field

[0001] The utility model relates to the technical field of motor load detection, and in particular to a detection device for a steering wheel wire-controlled motor of an autonomous driving vehicle. Background Art

[0002] The working principle of controlling the steering wheel rotation in self-driving cars is mainly based on deep learning, PID control algorithm and wire control system. Self-driving cars use the images captured by the on-board camera and the model trained by deep learning to judge the angle and direction of the steering wheel rotation. This process involves the neural network imitating how humans operate the steering wheel in different driving scenarios to ensure the accuracy and real-time control. Accuracy is crucial for autonomous driving, because any misjudgment or control deviation of the steering wheel may cause harm to pedestrians around. At the same time, since the vehicle may be driving at high speed, the response speed of the algorithm needs to be very fast to ensure real-time. The wire control system (Steer-by-Wire, SbW) is a steering technology commonly used in self-driving cars. In this system, the steering wheel angle and torque sensors convert the measured information into electrical signals and transmit them to the main controller. The main controller will make a comprehensive judgment and issue control instructions based on this information and the sensor data from the wheel motion state, so that the steering motor performs the corresponding action to complete the vehicle's steering. In the production process of the motor, the mechanical properties of the motor need to be tested and evaluated to ensure that the performance of the motor produced meets national standards.

[0003] In Chinese patent application number 202020798823.4, patent name "Motor load detection device", a motor load detection device is disclosed, including a base, a brake, a torque sensor and a support base, the brake and the torque sensor are arranged on the base at intervals, the brake is connected to the torque sensor through a first coupling, the torque sensor is connected to the output shaft of the motor to be detected through a second coupling, the support base is used to support the motor to be detected, the support base is movably arranged on the base, the support base is located on the side of the torque sensor away from the brake, and the support base can adjust the position of the motor to be detected along a first direction and a second direction perpendicular to each other so that the axis of the output shaft of the motor to be detected coincides with the central axis of the torque sensor.

[0004] Although in the above patent, an adjustable position support seat is provided so that the axes of the output shafts of different motors to be tested can coincide with the central axis of the torque sensor, thereby making the entire motor load detection device applicable to motors to be tested of different types and specifications, it is found in actual use that in the above patent, the output shaft of the detection motor and the torque sensor are rigidly connected. Once the support seat becomes loose, the axis of the output shaft of the detection motor and the central axis of the torque sensor will be offset, which greatly increases the difficulty of the detection personnel's work. Utility Model Content

[0005] The utility model discloses a detection device for a wire-controlled motor of a steering wheel of an autonomous vehicle, so as to solve the problem that in the existing motor load detection device in the above-mentioned background technology, the output shaft of the detection motor and the torque sensor are rigidly connected. Once the support seat becomes loose, the axis of the output shaft of the detection motor and the central axis of the torque sensor will be offset, which not only greatly increases the difficulty of the detection personnel's work, but also greatly increases the risk of damage to the detection motor or the coupling.

[0006] In order to solve the above technical problems, the following technical solutions are proposed:

[0007] A detection device for a wire-controlled motor of a steering wheel of an autonomous driving vehicle comprises a mounting frame, a detection motor and a coupling, wherein the detection motor is arranged on the mounting frame, and a mounting position is also provided on the mounting frame, wherein the mounting position is used to install the wire-controlled motor to be tested, and when the wire-controlled motor to be tested is installed in the mounting position, the rotating shaft of the detection motor is arranged opposite to the rotating shaft of the wire-controlled motor to be tested, and the coupling is a universal coupling, wherein one end of the coupling is connected to the rotating shaft of the detection motor, and the other end is connected to the rotating shaft of the wire-controlled motor to be tested on the mounting position.

[0008] Preferably, the coupling comprises a first connecting shaft, a second connecting shaft, a third connecting shaft and a cross shaft, and the first connecting shaft and the third connecting shaft are movably arranged on both sides of the second connecting shaft through the cross shaft;

[0009] Among them, one end of the first connecting shaft is connected to the rotating shaft of the detection motor, one end of the third connecting shaft is used to connect the rotating shaft of the wire-controlled motor to be tested, the other end of the first connecting shaft and the other end of the third connecting shaft are both provided with a first ear piece, and both ends of the second connecting shaft are both provided with a second ear piece, and the first ear piece and the second ear piece are hingedly arranged in sequence on the four bearings of the cross shaft in an alternating manner.

[0010] Preferably, a limit key is provided on the rotating shaft of the detection motor, and a slot adapted to the rotating shaft of the detection motor is provided at one end of the first connecting shaft connected to the rotating shaft of the detection motor. The side wall of the first connecting shaft is also provided with a threaded hole connected to the slot, and a first bolt is provided in the threaded hole. When the rotating shaft of the detection motor is placed in the slot, the first bolt abuts against the limit key.

[0011] Preferably, it further includes a connecting disk and a second bolt, wherein the connecting disk is arranged at an end of the third connecting shaft away from the second connecting shaft, a plurality of through holes are provided on the connecting disk, and the through holes are evenly arranged on the connecting disk along the circumferential direction of the connecting disk, and when the third connecting shaft is connected to the rotating shaft of the linear motor to be tested, the second bolt passes through the through holes and is connected to the rotating shaft of the linear motor to be tested.

[0012] Preferably, the mounting frame has an "F"-shaped structure, and the mounting frame includes a base, a first mounting plate, a second mounting plate and a support plate. The first mounting plate and the second mounting plate are respectively arranged on both sides of the base, and the first mounting plate is arranged parallel to the second mounting plate. The detection motor is fixedly mounted on the first mounting plate, and the rotating shaft of the detection motor passes through the first mounting plate and extends toward the direction of the second mounting plate. The mounting position is located on the side of the second mounting plate facing the first mounting plate, and the support plate is arranged at the connecting portion between the first mounting plate and the base, and is located on the same plane as the base.

[0013] Preferably, the first mounting plate, the base and the second mounting plate are an integrated structure, a connecting piece is provided at an edge of the support plate, and the support plate is fixedly connected to the first mounting plate via the connecting piece.

[0014] Preferably, the second mounting plate is further provided with a mounting hole and a third bolt, the third bolt is arranged in the mounting hole, and the linear motor to be tested is detachably arranged on the second mounting plate by the third bolt.

[0015] Beneficial effect: The utility model is a detection device for a wire-controlled motor of a steering wheel of an autonomous driving vehicle, comprising a mounting frame, a detection motor and a coupling, wherein the detection motor is arranged on the mounting frame, and a mounting position is also provided on the mounting frame, wherein the mounting position is used to install the wire-controlled motor to be tested, and when the wire-controlled motor to be tested is installed in the mounting position, the rotating shaft of the detection motor and the rotating shaft of the wire-controlled motor to be tested are arranged relatively to each other, and the coupling is a universal coupling, one end of the coupling is connected to the rotating shaft of the detection motor, and the other end is connected to the rotating shaft of the wire-controlled motor to be tested on the mounting position. In this embodiment, the universal coupling can make the two shafts not on the same axis, and the continuous rotation of the two connected shafts can be realized when there is an axis angle, so that the rotating shaft of the detection motor is connected to the rotating shaft of the wire-controlled motor to be tested, so that the rotating shaft of the detection motor and the rotating shaft of the wire-controlled motor to be tested do not need to be completely aligned, which not only greatly reduces the working difficulty of the detection personnel, but also reduces the risk of damage to the wire-controlled motor to be tested during the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a partial explosion diagram of the coupling of the utility model;

[0018] Figure 3 It is a partial cross-sectional view of the connection portion between the first connecting shaft and the detection motor shaft in the utility model;

[0019] Figure 4 It is an exploded view of the mounting frame part of the utility model.

[0020] The main component symbols are described as follows:

[0021] 1. Mounting frame; 11. Base; 12. First mounting plate; 13. Second mounting plate;

[0022] 14. Support plate; 15. Connector; 16. Mounting hole;

[0023] 2. Detection motor; 21. Limit key; 22. Detection motor shaft; 23. Card slot;

[0024] 24. threaded hole; 25. first bolt;

[0025] 3. Coupling; 31. First connecting shaft; 32. Second connecting shaft;

[0026] 33. third connecting shaft; 34. cross shaft; 35. first ear piece; 36. second ear piece;

[0027] 4. Wire-controlled motor;

[0028] 5. Connecting plate. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] The following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] This utility model is a detection device for a wire-controlled motor of a steering wheel of an autonomous vehicle. Figure 1-4 , including a mounting frame 1, a detection motor 2 and a coupling 3. The detection motor 2 is arranged on the mounting frame 1. The mounting frame 1 is also provided with a mounting position, which is used to install the wire-controlled motor 4 to be tested, and when the wire-controlled motor 4 to be tested is installed in the mounting position, the rotating shaft 22 of the detection motor 2 is arranged relatively to the rotating shaft of the wire-controlled motor 4 to be tested, and the coupling 3 is a universal coupling 3, one end of the coupling is connected to the rotating shaft 22 of the detection motor 2, and the other end is connected to the rotating shaft of the wire-controlled motor 4 to be tested on the mounting position. In this embodiment, the universal coupling 3 can make the two axes not on the same axis, and the continuous rotation of the connected two axes can be achieved when there is an axis angle. The rotating shaft 22 of the detection motor 2 is connected to the rotating shaft of the wire-controlled motor 4 to be tested, so that the rotating shaft 22 of the detection motor 2 and the rotating shaft of the wire-controlled motor 4 to be tested do not need to be completely aligned, which not only greatly reduces the working difficulty of the detection personnel, but also reduces the risk of damage to the wire-controlled motor 4 to be tested during the detection process.

[0032] In this embodiment, the coupling 3 includes a first connecting shaft 31, a second connecting shaft 32, a third connecting shaft 33 and a cross shaft 34, and the first connecting shaft 31 and the third connecting shaft 33 are movably arranged on both sides of the second connecting shaft 32 through the cross shaft 34; wherein, one end of the first connecting shaft 31 is connected to the rotating shaft 22 of the detection motor 2, and one end of the third connecting shaft 33 is used to connect the rotating shaft of the wire-controlled motor 4 to be tested, and the other end of the first connecting shaft 31 and the other end of the third connecting shaft 33 are each provided with a first ear piece 35, and both ends of the second connecting shaft 32 are each provided with a second ear piece 36, and the first ear piece 35 and the second ear piece 36 are alternately hingedly arranged on the four bearings of the cross shaft 34 in sequence, and the first connecting shaft 31 and the third connecting shaft 33 are connected to the second connecting shaft 32 through the cross shaft 34, which not only makes the first connecting shaft 31 and the second connecting shaft 32 have a large deviation, but also still reliably transmits motion and torque, and has a compact structure, occupies a small space, and is easy to install and use in a mechanical device.

[0033] In this embodiment, a limit key 21 is provided on the rotating shaft 22 of the detection motor 2, and a slot 23 adapted to the rotating shaft of the detection motor 2 is provided at one end of the first connecting shaft 31 connected to the rotating shaft of the detection motor 2. When the rotating shaft of the detection motor 2 is placed in the slot 23, the limit key 21 is engaged with the first connecting shaft 31, so that relative rotation does not occur when the detection motor 2 drives the first connecting shaft 31 to rotate. Secondly, a threaded hole 24 connected to the slot 23 is provided on the side wall of the first connecting shaft 31, and a first bolt 25 is provided in the threaded hole 24. When the rotating shaft 22 of the detection motor 2 is placed in the slot 23, the first bolt 25 resists the limit key 21, thereby fixing the first connecting shaft 31 on the rotating shaft 22 of the detection motor 2.

[0034] In this embodiment, it also includes a connecting disk 5 and a second bolt. The connecting disk 5 is arranged at one end of the third connecting shaft 33 away from the second connecting shaft 32. A plurality of through holes are provided on the connecting disk 5, and the through holes are evenly arranged on the connecting disk 5 along the circumferential direction of the connecting disk 5. When the third connecting shaft 33 is connected to the rotating shaft of the linear motor to be tested, the second bolt passes through the through hole and is connected to the rotating shaft of the linear motor to be tested, which greatly reduces the difficulty of loading and unloading the coupling 3 and the linear motor to be tested.

[0035] In this embodiment, the mounting frame 1 includes a base 11, a first mounting plate 12, a second mounting plate 13 and a support plate 14. The first mounting plate 12 and the second mounting plate 13 are respectively arranged on both sides of the base 11, and the first mounting plate 12 is arranged parallel to the second mounting plate 13. The detection motor 2 is fixedly mounted on the first mounting plate 12, and the rotating shaft 22 of the detection motor 2 passes through the first mounting plate 12 and extends in the direction of the second mounting plate 13. The installation position is located on the side of the second mounting plate 13 facing the first mounting plate 12. During use, since the detection motor 2 is arranged on the side of the first mounting plate 12 away from the second mounting plate 13, the center of gravity of the mounting frame 1 is offset to the outside of the mounting frame 1 at this time. Therefore, the support plate 14 is arranged at the connecting part of the first mounting plate 12 and the base 11, and is located on the same plane as the base 11, so that the mounting frame 1 has an "F" shape structure, thereby ensuring the stability of the mounting frame 1 during operation.

[0036] In this embodiment, the first mounting plate 12, the base 11 and the second mounting plate 13 are an integrated structure, a connecting piece 15 is provided at the edge of the support plate 14, the support plate 14 and the connecting piece 15 are also an integrated structure, and the support plate 14 is fixedly connected to the first mounting plate 12 by the connecting piece 15. In this embodiment, the mounting frame 1 with an irregular structure is split into two regular structures, and then the two regular structures are spliced, which greatly reduces the production difficulty of the mounting frame 1.

[0037] In this embodiment, the second mounting plate 13 is further provided with a mounting hole 16 and a third bolt. The third bolt is arranged in the mounting hole 16. The linear motor to be tested is detachably arranged on the second mounting plate 13 by the third bolt, which further reduces the difficulty of installing the linear motor to be tested.

[0038] The above disclosures are only several specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A detection device for a steering wheel wire-controlled motor of an autonomous driving vehicle, characterized in that: It includes a mounting frame, a detection motor and a coupling, wherein the detection motor is arranged on the mounting frame, and a mounting position is also provided on the mounting frame, wherein the mounting position is used to install the wire-controlled motor to be tested, and when the wire-controlled motor to be tested is installed in the mounting position, the rotating shaft of the detection motor and the rotating shaft of the wire-controlled motor to be tested are arranged relative to each other, and the coupling is a universal coupling, wherein one end of the coupling is connected to the rotating shaft of the detection motor, and the other end is connected to the rotating shaft of the wire-controlled motor to be tested on the mounting position.

2. The detection device for the steering wheel wire-controlled motor of an autonomous driving vehicle according to claim 1, characterized in that: The coupling comprises a first connecting shaft, a second connecting shaft, a third connecting shaft and a cross shaft, wherein the first connecting shaft and the third connecting shaft are movably arranged on both sides of the second connecting shaft through the cross shaft; Among them, one end of the first connecting shaft is connected to the rotating shaft of the detection motor, one end of the third connecting shaft is used to connect the rotating shaft of the wire-controlled motor to be tested, the other end of the first connecting shaft and the other end of the third connecting shaft are both provided with a first ear piece, and both ends of the second connecting shaft are both provided with a second ear piece, and the first ear piece and the second ear piece are hingedly arranged in sequence on the four bearings of the cross shaft in an alternating manner.

3. The detection device for the steering wheel wire-controlled motor of the automatic driving vehicle according to claim 2 is characterized in that: A limit key is provided on the rotating shaft of the detection motor, and a slot adapted to the rotating shaft of the detection motor is provided at one end of the first connecting shaft connected to the rotating shaft of the detection motor. A threaded hole connected to the slot is provided on the side wall of the first connecting shaft, and a first bolt is provided in the threaded hole. When the rotating shaft of the detection motor is placed in the slot, the first bolt abuts against the limit key.

4. The detection device for the steering wheel wire-controlled motor of the automatic driving vehicle according to claim 2 is characterized in that: It also includes a connecting disk and a second bolt, wherein the connecting disk is arranged at one end of the third connecting shaft away from the second connecting shaft, and a plurality of through holes are provided on the connecting disk, and the through holes are evenly arranged on the connecting disk along the circumferential direction of the connecting disk. When the third connecting shaft is connected to the rotating shaft of the linear motor to be tested, the second bolt passes through the through holes and is connected to the rotating shaft of the linear motor to be tested.

5. The detection device for the steering wheel wire-controlled motor of an autonomous driving vehicle according to claim 1, characterized in that: The mounting frame is in an "F"-shaped structure, and includes a base, a first mounting plate, a second mounting plate and a support plate. The first mounting plate and the second mounting plate are respectively arranged on both sides of the base, and the first mounting plate is arranged in parallel with the second mounting plate. The detection motor is fixedly mounted on the first mounting plate, and the rotating shaft of the detection motor passes through the first mounting plate and extends toward the second mounting plate. The mounting position is located on the side of the second mounting plate facing the first mounting plate. The support plate is arranged at the connecting portion between the first mounting plate and the base, and is located on the same plane as the base.

6. The detection device for the steering wheel wire-controlled motor of the automatic driving vehicle according to claim 5 is characterized in that: The first mounting plate, the base and the second mounting plate are an integrated structure, a connecting piece is provided at the edge of the support plate, and the support plate is fixedly connected to the first mounting plate through the connecting piece.

7. The detection device for the steering wheel wire-controlled motor of the automatic driving vehicle according to claim 5 is characterized in that: The second mounting plate is further provided with a mounting hole and a third bolt, wherein the third bolt is disposed in the mounting hole, and the linear motor to be tested is detachably mounted on the second mounting plate via the third bolt.

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