Transmission device for unmanned vehicle and vehicle steering controller

Abstract

The embodiment of the utility model discloses a transmission device for an unmanned vehicle and a vehicle steering controller, in the actual use process, when the vehicle is in an automatic driving state, a driving assembly enables a transmission shaft to be in a shortened state, the transmission shaft is separated from a sleeve, and when the vehicle is steered, the transmission shaft is not in the shortened state; when the vehicle needs to be controlled manually, the driving assembly can drive the transmission shaft to be in an extension state, the transmission shaft is in linkage with the sleeve at the moment, and when an operator rotates the steering wheel, the transmission assembly can transmit rotation of the steering wheel to the steering gear, so that the steering wheel is driven to rotate synchronously. Manual vehicle control is realized; after the vehicle is converted into manual driving from unmanned driving, a steering wheel does not need to be additionally assembled, linkage between the steering wheel and the steering gear can be directly achieved, the corresponding speed for converting unmanned driving into manual driving is increased, and meanwhile the flexibility and usability of the unmanned vehicle are improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of unmanned driving technology of automobiles, and in particular to a transmission device and a vehicle steering controller for an unmanned vehicle. Background Art

[0002] At present, the unmanned passenger buses in China are generally designed without the driver's seat and steering wheel, and only retain the steering wheel installation interface, which is hidden inside the dashboard. They are completely used for unmanned driving, and only guides are set up on the bus for service and safety.

[0003] The above design has certain problems: once the unmanned driving system fails, the vehicle cannot be taken over manually, which poses a certain safety risk; at the same time, when the vehicle needs to be moved manually, the steering wheel needs to be reinstalled, which is time-consuming and labor-intensive; and if the steering wheel is always installed, during the unmanned driving process, the steering wheel rotates with the bus, which will cause component redundancy and the unmanned driving will be easily interfered with. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0005] To this end, a first aspect of the present utility model provides a transmission device for an unmanned vehicle.

[0006] A second aspect of the utility model provides a vehicle steering controller.

[0007] In view of this, according to a first aspect of an embodiment of the present application, a transmission device for an unmanned vehicle is proposed, comprising:

[0008] A mounting base, the mounting base being arranged on a steering gear of a vehicle;

[0009] A sleeve, one end of which is connected to the input end of the vehicle steering gear, and the other end of which passes through the mounting base;

[0010] A driving assembly, wherein the driving assembly is disposed on the mounting base;

[0011] A transmission shaft, wherein the transmission shaft has a movable end and a fixed end, the fixed end of the transmission shaft is connected to a steering column of a vehicle, the movable end of the transmission shaft is connected to the drive assembly, the movable end of the transmission shaft has two states, an extended state and a shortened state, when the transmission shaft is in an extended state, the transmission shaft is connected to the sleeve, and when the transmission shaft is in a shortened state, the transmission shaft is separated from the sleeve.

[0012] In a feasible implementation manner, the driving assembly includes:

[0013] A drive motor, the drive motor is used to provide power for the lifting and lowering of the movable end of the transmission shaft;

[0014] The movable bracket has a lifting function, the output end of the driving motor is connected to the movable bracket, and the movable bracket is fixedly connected to the movable end of the transmission shaft.

[0015] In a feasible implementation manner, the movable support includes:

[0016] A first fixing plate, the first fixing plate is fixedly connected to the mounting base;

[0017] a second fixing plate, the second fixing plate being fixedly connected to the movable end of the transmission shaft;

[0018] A telescopic side arm, one end of which is connected to the first fixed plate, and the other end of which is connected to the second fixed plate. There are two telescopic side arms, which are respectively arranged on both sides of the first fixed plate and the second fixed plate.

[0019] In a feasible implementation manner, the telescopic side arm comprises:

[0020] A first movable arm, wherein the first movable arm is formed by hingedly connecting two single rods, one end of the first movable arm is connected to the first fixed plate, and the other end of the first movable arm is connected to the second fixed plate;

[0021] A second movable arm, wherein the second movable arm is formed by hingedly connecting two single rods, one end of the second movable arm is connected to the first fixed plate, and the other end of the second movable arm is connected to the second fixed plate;

[0022] A linkage rod, one end of which is connected to the hinge of the first movable arm, and the other end of which is connected to the hinge of the second movable arm;

[0023] The linkage rod is connected to the output end of the driving motor, and the linkage rod has a first position and a second position.

[0024] In a feasible embodiment, the driving motor drives the linkage rod to perform linear motion. When the driving motor drives the linkage rod to move to the first position, the linkage rod drives the hinge between the first movable arm and the second movable arm to move, and the length between the two ends of the first movable arm and the second movable arm is shortened, driving the horizontal position of the second fixed plate to drop, thereby driving the movable end of the transmission shaft to become an extended state.

[0025] In a feasible embodiment, when the driving motor drives the linkage rod to move to the second position, the linkage rod drives the hinge between the first movable arm and the second movable arm to move, the lengths of both ends of the first movable arm and the second movable arm increase, driving the horizontal position of the second fixed plate to rise, thereby causing the movable end of the transmission shaft to become shortened, and the transmission shaft is separated from the sleeve.

[0026] In a feasible implementation manner, the transmission device further includes:

[0027] A first spline, wherein the first spline is arranged inside the sleeve, and the first spline is arranged at an end of the sleeve away from the transmission shaft;

[0028] a second spline, the second spline being arranged at a movable end of the transmission shaft;

[0029] When the transmission shaft is in an extended state, the first spline is meshed with the second spline, and when the transmission shaft is in a shortened state, the first spline is separated from the second spline.

[0030] In a feasible implementation manner, the telescopic side arm further includes:

[0031] A fixing rod, the two ends of which are respectively connected to the two telescopic side arms, and the number of the fixing rods is two;

[0032] Wherein, an end point of one fixed rod is connected to the hinge shaft of the first movable arm, and an end point of another fixed rod is connected to the hinge shaft of the second movable arm.

[0033] In a feasible implementation manner, the first fixing plate includes a bottom plate and a first mounting side plate;

[0034] The second fixing plate includes a top plate and a second mounting side plate.

[0035] According to a second aspect of an embodiment of the present application, a vehicle steering controller is provided, comprising: a steering wheel, the steering wheel being used for an operator to hold and steer the vehicle;

[0036] A steering column, one end of which is connected to the steering wheel;

[0037] A steering gear, the steering gear being linked to a driving part of the vehicle;

[0038] The transmission device described in any one of the above, wherein the steering gear and the steering column are connected via the transmission device;

[0039] When the transmission shaft of the transmission device is in an extended state, the steering gear and the steering column are linked, and turning the steering wheel can control the steering of the vehicle;

[0040] When the transmission shaft of the transmission device is in a shortened state, the steering gear is disconnected from the steering column, and the rotation of the steering wheel and the steering of the vehicle have no effect on each other.

[0041] Compared with the prior art, the utility model includes at least the following beneficial effects: in actual use, when the vehicle is in an automatic driving state, the drive shaft is shortened by the drive assembly, and the drive shaft is separated from the sleeve. When the vehicle turns, it will not drive the steering column, steering wheel and other components of the vehicle to rotate synchronously. When the vehicle needs to be controlled manually, the drive shaft can be driven by the drive assembly to become an extended state. At this time, the drive shaft and the sleeve are linked. When the operator turns the steering wheel, the transmission assembly can transmit the rotation of the steering wheel to the steering gear, thereby realizing manual control of the vehicle.

[0042] This technical solution can increase the flexibility of unmanned vehicles. When the vehicle is in the automatic driving state, the linkage between the steering wheel and the steering gear is disconnected, which can prevent irrelevant personnel from interfering with the unmanned driving of the vehicle by turning the steering wheel, and can also avoid component redundancy caused by the turning of the steering wheel under unmanned driving conditions. After the vehicle is converted from unmanned driving to manual driving, there is no need to install a steering wheel separately, and the steering wheel and the steering gear can be directly linked, which increases the corresponding speed of converting from unmanned driving to manual driving, and also increases the flexibility and ease of use of unmanned vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0044] Figure 1 A structural block diagram of a transmission device according to an embodiment of the present application;

[0045] Figure 2 A structural block diagram of a transmission device from another perspective of an embodiment provided by the present application;

[0046] Figure 3 A structural block diagram of a vehicle steering controller according to an embodiment of the present application;

[0047] Figure 4 A schematic diagram of the deformation of a movable bracket according to an embodiment of the present application.

[0048] in, Figure 1-3 The corresponding relationship between the reference numerals and the component names is as follows:

[0049] 100, steering wheel; 200, steering column; 300, transmission device; 400, steering gear;

[0050] 310, mounting base; 320, sleeve; 330, driving assembly; 340, transmission shaft;

[0051] 331. Driving motor; 332. Movable bracket. DETAILED DESCRIPTION

[0052] In order to better understand the above-mentioned technical scheme, the technical scheme of the embodiments of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical scheme of the embodiments of the present application, rather than limitations on the technical scheme of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments may be combined with each other.

[0053] like Figure 1-3 As shown, according to the first aspect of the embodiment of the present application, a transmission device 300 for an unmanned vehicle is proposed, including: a mounting base 310, wherein the mounting base 310 is arranged on the steering gear 400 of the vehicle; a sleeve 320, wherein one end of the sleeve 320 is connected to the input end of the steering gear 400 of the vehicle, and the other end of the sleeve 320 passes through the mounting base 310; a driving assembly 330, wherein the driving assembly 330 is arranged on the mounting base 310; a transmission shaft 340, wherein the transmission shaft 340 has a movable end and a fixed end, wherein the fixed end of the transmission shaft 340 is connected to the steering column 200 of the vehicle, and the movable end of the transmission shaft 340 is connected to the driving assembly 330, and the movable end of the transmission shaft 340 has two states, namely, an extension state and a shortening state. When the transmission shaft 340 is in an extension state, the transmission shaft 340 is connected to the sleeve 320, and when the transmission shaft 340 is in a shortening state, the transmission shaft 340 is separated from the sleeve 320.

[0054] The transmission device 300 provided in the embodiment of the present application includes a mounting base 310, a sleeve 320, a driving assembly 330 and a transmission shaft 340. The transmission device 300 is specifically applied to vehicles.

[0055] The sleeve 320 is connected to the input end of the steering gear 400 of the vehicle. When the sleeve 320 rotates, the input end of the steering gear 400 can be driven to rotate synchronously. When the input end of the steering gear 400 rotates, the vehicle can be steered.

[0056] Among them, the transmission shaft 340 has a movable end and a fixed end. The movable end of the transmission shaft 340 has two states: extension and shortening. When the movable end of the transmission shaft 340 is extended, the transmission shaft 340 and the sleeve 320 are linked. When the movable end of the transmission shaft 340 is shortened, the transmission shaft 340 and the sleeve 320 are separated.

[0057] The driving assembly 330 is connected to the transmission shaft 340 , and the extension and shortening of the transmission shaft 340 are achieved through the driving assembly 330 .

[0058] During actual use, when the vehicle is in an automatic driving state, the drive shaft 340 is shortened by the drive assembly 330, and the drive shaft 340 is separated from the sleeve 320. When the vehicle turns, it will not drive the vehicle's steering column 200, steering wheel 100 and other components to rotate synchronously. When the vehicle needs to be controlled manually, the drive shaft 340 can be driven by the drive assembly 330 to become an extended state. At this time, the drive shaft 340 is linked with the sleeve 320. When the operator turns the steering wheel 100, the transmission assembly can transmit the rotation of the steering wheel 100 to the steering gear 400, thereby realizing manual control of the vehicle.

[0059] This technical solution can increase the flexibility of unmanned vehicles. When the vehicle is in the automatic driving state, the linkage between the steering wheel 100 and the steering gear 400 is disconnected, which can prevent irrelevant personnel from interfering with the unmanned driving of the vehicle by turning the steering wheel, and can also avoid component redundancy caused by the rotation of the steering wheel 100 under unmanned driving conditions. After the vehicle is converted from unmanned driving to manual driving, there is no need to assemble the steering wheel 100 separately, and the steering wheel 100 can be directly linked with the steering gear 400, which increases the corresponding speed of converting from unmanned driving to manual driving, and also increases the flexibility and ease of use of unmanned vehicles.

[0060] like Figure 1-3 As shown, the driving assembly 330 includes: a driving motor 331, which is used to provide power for the lifting and lowering of the movable end of the transmission shaft 340; a movable bracket 332, which has a lifting function, and the output end of the driving motor 331 is connected to the movable bracket 332, and the movable bracket 332 is fixedly connected to the movable end of the transmission shaft 340.

[0061] In this technical solution, the driving assembly 330 includes a driving motor 331 and a movable bracket 332, wherein the movable bracket 332 is connected to the movable end of the transmission shaft 340, and the movable bracket 332 has a lifting function. The movable bracket 332 drives the movable end of the transmission shaft 340 to extend or shorten through the lifting function, and the driving motor 331 is used to provide power for the lifting and lowering of the movable bracket 332.

[0062] like Figure 1-3 As shown, the movable bracket 332 includes: a first fixed plate, which is fixedly connected to the mounting base 310; a second fixed plate, which is fixedly connected to the movable end of the transmission shaft 340; a telescopic side arm, one end of the telescopic side arm is connected to the first fixed plate, and the other end of the telescopic side arm is connected to the second fixed plate, and the telescopic side arm has two, which are respectively arranged on both sides of the first fixed plate and the second fixed plate.

[0063] In this technical solution, the movable bracket 332 includes a first fixed plate, a second fixed plate box and a telescopic side arm, wherein both ends of the telescopic side arm are respectively connected to the first fixed plate and the second fixed plate, the first fixed plate is connected to the mounting base 310, and the second fixed plate is connected to the movable end of the transmission shaft 340. When the telescopic side arm is extended or shortened, the horizontal position of the second fixed plate changes.

[0064] like Figure 1-3 As shown, the telescopic side arm includes: a first movable arm, the first movable arm is formed by two single-rod hinges, one end of the first movable arm is connected to the first fixed plate, and the other end of the first movable arm is connected to the second fixed plate; a second movable arm, the second movable arm is formed by two single-rod hinges, one end of the second movable arm is connected to the first fixed plate, and the other end of the second movable arm is connected to the second fixed plate; a linkage rod, one end of the linkage rod is connected to the hinge of the first movable arm, and the other end of the linkage rod is connected to the hinge of the second movable arm; the linkage rod is connected to the output end of the drive motor 331, and the linkage rod has a first position and a second position.

[0065] In this technical solution, the telescopic side arm includes a first movable arm, a second movable arm and a linkage rod. One end of the first movable arm and the second movable arm are connected to the first fixed plate, and the other end is connected to the second fixed plate. The first movable arm and the second movable arm are both formed by hinged two single rods. The two ends of the linkage rod are arranged at the hinge of the first movable arm and the second movable arm. The first fixed plate, one of the single rods of the first movable arm, one of the single rods of the second movable arm and the linkage rod form a movable parallelogram. The second fixed plate, another single rod of the first movable arm, another single rod of the second movable arm and the linkage rod form another movable parallelogram. The linkage rod is the common side of the two movable parallelograms.

[0066] like Figure 1-3As shown, the driving motor 331 drives the linkage rod to move in a straight line. When the driving motor 331 drives the linkage rod to move to the first position, the linkage rod drives the hinge between the first movable arm and the second movable arm to move, and the length between the two ends of the first movable arm and the second movable arm is shortened, driving the horizontal position of the second fixed plate to drop, thereby driving the movable end of the transmission shaft 340 to become an extended state.

[0067] As shown in the figure, when the driving motor 331 drives the linkage rod to move to the second position, the linkage rod drives the hinge of the first movable arm and the second movable arm to move, and the lengths of both ends of the first movable arm and the second movable arm increase, driving the horizontal position of the second fixed plate to rise, so that the movable end of the transmission shaft 340 becomes shortened, and the transmission shaft 340 is separated from the sleeve 320.

[0068] In this technical solution, when the linkage rod is pulled, the heights of the two parallelograms change, and the height of the second fixed plate also changes.

[0069] like Figure 4 As shown, during use, the driving motor 331 drives the linkage rod to move in the F direction until the second fixed plate drops to the lower limit position. At this time, the transmission shaft 340 is in an extended state, and the transmission shaft 340 is linked with the sleeve 320 to realize the transmission function. The driving motor 331 drives the linkage rod to move in the opposite direction to F until the second fixed plate rises to the upper limit position. At this time, the transmission shaft 340 is in a shortened state, the transmission shaft 340 is separated from the sleeve 320, and the transmission function is terminated.

[0070] In actual application, when the push rod stroke of the driving motor 331 reaches 30 mm, the transmission shaft 340 is calculated to move downward by 32 mm, and the time is 4.2 s.

[0071] like Figure 1-3 As shown, the transmission device 300 also includes: a first spline, which is arranged on the inner side of the sleeve 320, and the first spline is arranged at an end of the sleeve 320 away from the transmission shaft 340; a second spline, which is arranged at the movable end of the transmission shaft 340; when the transmission shaft 340 is in an extended state, the first spline is meshed with the second spline, and when the transmission shaft 340 is in a shortened state, the first spline is separated from the second spline.

[0072] In this technical solution, when the transmission shaft 340 is connected to the sleeve 320, the first spline is meshed with the second spline, and the second spline drives the first spline to rotate, thereby realizing the transmission function.

[0073] In actual application, the theoretical meshing size between the first spline and the second spline is 27 mm, and there is a 5 mm idle stroke before meshing.

[0074] like Figure 1-3 As shown, the telescopic side arm also includes: a fixing rod, the two ends of which are respectively connected to the two telescopic side arms, and the number of the fixing rods is two; wherein an end point of one fixing rod is connected to the hinge shaft of the first movable arm, and an end point of the other fixing rod is connected to the hinge shaft of the second movable arm.

[0075] This technical solution also includes a fixing rod, which is used to further ensure that the two telescopic side arms are retracted synchronously, thereby increasing the stability of this technical solution.

[0076] like Figure 1-3 As shown, the first fixing plate includes a bottom plate and a first mounting side plate; the second fixing plate includes a top plate and a second mounting side plate.

[0077] In this technical solution, the first fixed plate includes a bottom plate and a first mounting side plate, and the second fixed plate includes a top plate and a second mounting side plate, wherein both ends of the first movable arm and the second movable arm are respectively connected to the first mounting plate and the second mounting plate.

[0078] like Figure 1-3 As shown, according to the second aspect of the embodiment of the present application, a vehicle steering controller is proposed, comprising: a steering wheel 100, wherein the steering wheel 100 is used for an operator to hold and steer a vehicle; a steering column 200, wherein one end of the steering column 200 is connected to the steering wheel 100; a steering gear 400, wherein the steering gear 400 is linked to a driving part of the vehicle; a transmission device 300 as described above, wherein the steering gear 400 is connected to the steering column 200 through the transmission device 300; wherein when the transmission shaft 340 of the transmission device 300 is in an extended state, the steering gear 400 is linked to the steering column 200, and the steering of the vehicle can be controlled by turning the steering wheel 100; when the transmission shaft 340 of the transmission device 300 is in a shortened state, the steering gear 400 is disconnected from the steering column 200, and the rotation of the steering wheel 100 and the steering of the vehicle do not affect each other.

[0079] In this technical solution, when the vehicle is in an automatic driving state, the transmission shaft 340 of the transmission device 300 is in a shortened state, the steering wheel 100 cannot control the steering of the vehicle, and the steering wheel 100 will not be driven to rotate when the vehicle turns. When the vehicle is in a manual driving state, the transmission shaft 340 of the transmission device 300 is in an extended state, and the vehicle can be turned by turning the steering wheel 100.

[0080] This technical solution improves the safety and stability of the vehicle when it is unmanned, and at the same time improves the efficiency of switching between unmanned driving and manual driving.

[0081] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0082] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0083] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0084] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A transmission device for an unmanned vehicle, characterized in that: include: A mounting base, the mounting base being arranged on a steering gear of a vehicle; A sleeve, one end of which is connected to the input end of the vehicle steering gear, and the other end of which passes through the mounting base; A driving assembly, wherein the driving assembly is disposed on the mounting base; A transmission shaft, wherein the transmission shaft has a movable end and a fixed end, the fixed end of the transmission shaft is connected to a steering column of a vehicle, the movable end of the transmission shaft is connected to the drive assembly, the movable end of the transmission shaft has two states, an extended state and a shortened state, when the transmission shaft is in an extended state, the transmission shaft is connected to the sleeve, and when the transmission shaft is in a shortened state, the transmission shaft is separated from the sleeve.

2. The transmission device for an unmanned vehicle according to claim 1, characterized in that: The drive assembly comprises: A drive motor, the drive motor is used to provide power for the lifting and lowering of the movable end of the transmission shaft; The movable bracket has a lifting function, the output end of the driving motor is connected to the movable bracket, and the movable bracket is fixedly connected to the movable end of the transmission shaft.

3. The transmission device for an unmanned vehicle according to claim 2, characterized in that: The movable bracket comprises: A first fixing plate, the first fixing plate being fixedly connected to the mounting base; a second fixing plate, the second fixing plate being fixedly connected to the movable end of the transmission shaft; A telescopic side arm, one end of which is connected to the first fixed plate, and the other end of which is connected to the second fixed plate. There are two telescopic side arms, which are respectively arranged on both sides of the first fixed plate and the second fixed plate.

4. The transmission device for an unmanned vehicle according to claim 3, characterized in that: The telescopic side arm comprises: A first movable arm, wherein the first movable arm is formed by hingedly connecting two single rods, one end of the first movable arm is connected to the first fixed plate, and the other end of the first movable arm is connected to the second fixed plate; A second movable arm, wherein the second movable arm is formed by hingedly connecting two single rods, one end of the second movable arm is connected to the first fixed plate, and the other end of the second movable arm is connected to the second fixed plate; A linkage rod, one end of which is connected to the hinge of the first movable arm, and the other end of which is connected to the hinge of the second movable arm; The linkage rod is connected to the output end of the driving motor, and the linkage rod has a first position and a second position.

5. The transmission device for an unmanned vehicle according to claim 4, characterized in that: The driving motor drives the linkage rod to perform linear motion. When the driving motor drives the linkage rod to move to the first position, the linkage rod drives the hinge between the first movable arm and the second movable arm to move, and the length between the two ends of the first movable arm and the second movable arm is shortened, driving the horizontal position of the second fixed plate to drop, thereby driving the movable end of the transmission shaft to become an extended state.

6. The transmission device for an unmanned vehicle according to claim 4, characterized in that: When the driving motor drives the linkage rod to move to the second position, the linkage rod drives the hinge between the first movable arm and the second movable arm to move, the lengths of both ends of the first movable arm and the second movable arm increase, driving the horizontal position of the second fixed plate to rise, so that the movable end of the transmission shaft becomes shortened and the transmission shaft is separated from the sleeve.

7. The transmission device for an unmanned vehicle according to claim 5, characterized in that: The transmission device also includes: A first spline, wherein the first spline is arranged inside the sleeve, and the first spline is arranged at an end of the sleeve away from the transmission shaft; a second spline, the second spline being arranged at a movable end of the transmission shaft; When the transmission shaft is in an extended state, the first spline is meshed with the second spline, and when the transmission shaft is in a shortened state, the first spline is separated from the second spline.

8. The transmission device for an unmanned vehicle according to claim 4, characterized in that: The telescopic side arm also includes: A fixing rod, the two ends of which are respectively connected to the two telescopic side arms, and the number of the fixing rods is two; Wherein, an end point of one fixed rod is connected to the hinge shaft of the first movable arm, and an end point of another fixed rod is connected to the hinge shaft of the second movable arm.

9. The transmission device for an unmanned vehicle according to claim 4, characterized in that: The first fixing plate includes a bottom plate and a first mounting side plate; The second fixing plate includes a top plate and a second mounting side plate.

10. A vehicle steering controller, characterized in that: include: A steering wheel, the steering wheel is used for an operator to hold and steer the vehicle; A steering column, one end of which is connected to the steering wheel; A steering gear, the steering gear being linked to a driving part of the vehicle; The transmission device for an unmanned vehicle according to any one of claims 1 to 9, wherein the steering gear is connected to the steering column via the transmission device; in, When the transmission shaft of the transmission device is in an extended state, the steering gear and the steering column are linked, and turning the steering wheel can control the steering of the vehicle; When the transmission shaft of the transmission device is in a shortened state, the steering gear is disconnected from the steering column, and the rotation of the steering wheel and the steering of the vehicle have no effect on each other.

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