Shock absorption steering system of unmanned vehicle

Abstract

The utility model relates to the technical field of unmanned vehicles, in particular to a damping steering system of an unmanned vehicle, which comprises a steering mechanism and a damping component, the steering mechanism is fixed on a frame chassis for mounting a steering wheel, the damping component is arranged between the frame chassis and the steering wheel, and the steering mechanism comprises a steering shaft and a driving component. The steering shaft is arranged between the damping assembly and the frame chassis, a first connecting rod is arranged at the bottom of the driving assembly, one end of the first connecting rod penetrates through the frame chassis to be connected with a second connecting rod, and one end of the second connecting rod is connected to the damping assembly. And the steering wheel is steered. The steering device has the advantages that the shock absorption assembly is arranged between the steering shaft and the steering wheel, impact force directly acting on the steering shaft is reduced, abrasion and deformation are relieved, stable steering performance can be kept even on an uneven or inclined road surface, and a vehicle runs more safely.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned vehicles, in particular to a shock-absorbing steering system for an unmanned vehicle. Background Art

[0002] With the rapid development of science and technology, unmanned vehicle technology has become an important branch of modern logistics and transportation. Unmanned vehicles, especially unmanned transport vehicles, are widely used in a variety of scenarios due to their automation and intelligence, including but not limited to cargo transportation, environmental monitoring and military reconnaissance. One of the key technologies of unmanned vehicles is its steering system, which is directly related to the driving stability and handling performance of the vehicle.

[0003] Most of the existing unmanned vehicle steering systems use traditional mechanical steering mechanisms, which usually include a main shaft and a steering joint connected to the wheel. In practical applications, this traditional steering mechanism has poor bump resistance and is usually unable to withstand bumps and impacts from uneven roads. Long-term driving on bumpy roads will cause excessive wear on the connection parts of the steering mechanism. The connection part between the main shaft and the steering joint is subject to the influence of gravity for a long time, which is prone to wear and deformation. Especially during long-term use, this wear and deformation will gradually accumulate, resulting in reduced steering accuracy and may even cause structural failures. Utility Model Content

[0004] The utility model aims to provide a shock-absorbing steering system for an unmanned vehicle, so as to solve the technical problem that the steering system of the existing unmanned vehicle cannot well withstand the bumps and impacts from uneven roads, and long-term driving on bumpy roads will cause excessive wear on the connection parts of the steering mechanism.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a shock-absorbing steering system for an unmanned vehicle, which includes a steering mechanism and a shock-absorbing assembly, the steering mechanism is fixed on a frame chassis for mounting a steering wheel, the shock-absorbing assembly is arranged between the frame chassis and the steering wheel, the steering mechanism includes a steering shaft and a driving assembly, the steering shaft is arranged between the shock-absorbing assembly and the frame chassis, a first connecting rod is arranged at the bottom of the driving assembly, one end of the first connecting rod passes through the frame chassis and is connected to the second connecting rod, one end of the second connecting rod is connected to the shock-absorbing assembly, in the driving state, the driving assembly is started, and the shock-absorbing assembly is driven to rotate along the steering shaft through the first connecting rod and the second connecting rod, so that the steering wheel is turned. In the utility model, the device reduces the impact force directly acting on the steering shaft by arranging the shock-absorbing assembly between the steering shaft and the steering wheel, alleviates the problems of wear and deformation, and can maintain stable steering performance even on uneven or inclined roads, making vehicle driving safer.

[0006] As a preferred solution of the shock-absorbing steering system of an unmanned vehicle of the utility model, the driving assembly includes a motor and a slide rail both arranged on the chassis of the vehicle frame, the output end of the motor is connected to a screw rod, a screw rod nut is sleeved on the screw rod, and a slider connected and driven by the screw rod nut is arranged on the slide rail. The utility model can increase the steering torque through the design of the screw rod slider, and can effectively solve the problem of insufficient torque when turning on a slope through the drive of a DC reduction motor.

[0007] As a preferred solution of the shock-absorbing steering system of an unmanned vehicle of the utility model, the slider is connected to a transmission plate, the bottom surface of the transmission plate is connected to a first connecting rod, and a movable groove for sliding of the first connecting rod is provided on the frame chassis.

[0008] As a preferred solution of the shock-absorbing steering system of an unmanned vehicle of the utility model, the shock-absorbing assembly includes a steering wheel bracket and a spring, a triangular plate for connecting the steering wheel is arranged at the bottom of the steering wheel bracket, a mounting plate is arranged on the triangular plate, an inverted L-shaped beam is arranged on the mounting plate, a spring is arranged between the L-shaped beam and the mounting plate, and the top of the inverted L-shaped beam is connected to the steering shaft. In the utility model, the spring is arranged to absorb the bumps of the ground, reduce the friction at the connection of the steering shaft, and improve the life of the steering mechanism.

[0009] As a preferred solution of the shock-absorbing steering system for an unmanned vehicle of the utility model, a third connecting rod for connecting the second connecting rod is arranged on the side of the L-shaped beam away from the spring, and the second connecting rod can drive the third connecting rod to rotate around the steering shaft.

[0010] As a preferred solution of the shock absorbing steering system of an unmanned vehicle of the utility model, the acute angle of the triangular plate is connected to the axle of the steering wheel. In the forward driving state, in the same plane, the place where the triangular plate is connected to the axle is arranged in front of the relative steering axis position, so as to absorb the reverse thrust generated when the wheel moves forward.

[0011] The beneficial effects of the shock-absorbing steering system of an unmanned vehicle of the utility model are as follows: the device of the utility model reduces the impact force directly acting on the steering shaft and alleviates the problems of wear and deformation by arranging a shock-absorbing component between the steering shaft and the steering wheel, and can maintain stable steering performance even on uneven or inclined roads, making vehicle driving safer; by arranging a screw rod and a slider, etc., a new steering mechanism is formed, which can effectively solve the problem of insufficient torque when steering on an uphill slope; the wheel axle of the steering wheel is arranged before the relative steering shaft position to absorb the reverse thrust generated when the wheel moves forward, thereby improving the stability of vehicle driving and extending the service life of the steering system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0013] Figure 1 It is a schematic diagram of the overall structure of the device in the utility model.

[0014] Figure 2 It is a structural schematic diagram of the shock absorbing component of the device in the utility model.

[0015] Figure 3 It is a schematic diagram of the steering mechanism of the modified device in the utility model.

[0016] Figure 4 It is a schematic diagram of the encoding disk of the modified device in the utility model. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0020] Reference Figure 1-4 This embodiment provides a shock-absorbing steering system for an unmanned vehicle, which effectively solves the technical problem that the steering system of the existing unmanned vehicle cannot withstand the bumps and impacts from uneven roads well, and long-term driving on bumpy roads will cause excessive wear on the connection parts of the steering mechanism.

[0021] A shock absorbing steering system for an unmanned vehicle comprises a steering mechanism 1 and a shock absorbing assembly 2. The steering mechanism 1 is fixed on a frame chassis for mounting a steering wheel. The shock absorbing assembly 2 is arranged between the frame chassis and the steering wheel. The steering mechanism 1 comprises a steering shaft 3 and a driving assembly 4. The steering shaft 3 is arranged between the shock absorbing assembly 2 and the frame chassis. Two first connecting rods 5 are arranged at the bottom of the driving assembly 4. One end of the two first connecting rods 5 passes through the frame chassis and is respectively connected to two second connecting rods 6. One end of the second connecting rod 6 is connected to the shock absorbing assembly 2. In the driving state, the driving assembly 4 is started, and the shock absorbing assembly 2 is driven to rotate along the steering shaft 3 through the first connecting rod 5 and the second connecting rod 6 to complete the steering of the steering wheel.

[0022] The shock absorbing assembly 2 is arranged between the steering shaft 3 and the steering wheel to reduce the wear caused by bumps.

[0023] Specifically, the driving assembly 4 includes a motor 41 and a slide rail 42 both arranged on the frame chassis, the output end of the motor 41 is connected to a screw rod 43, a screw rod nut 44 is sleeved on the screw rod 43, and a slider 45 is fixedly connected to the slide rail 42 and driven to slide.

[0024] Among them, some steering mechanisms in the prior art are ordinary gear racks, which generate small torque and are difficult to steer when encountering a large slope. The steering mechanism 1 of the present application is used in conjunction with a DC reduction motor, which can increase the torque generated by the steering system when steering to a certain extent, thereby adapting to the slope, and overcoming the problem that some unmanned vehicles cannot steer due to insufficient steering force when going up a slope due to the influence of gravity.

[0025] Furthermore, a transmission plate 46 is fixedly connected to the slider 45 , a bottom surface of the transmission plate 46 is connected to the first connecting rod 5 , and a movable groove for the first connecting rod 5 to slide is provided on the frame chassis.

[0026] Specifically, the shock absorbing assembly 2 includes a steering wheel bracket 21 and a spring 22. A triangular plate 23 for connecting the steering wheel is arranged at the bottom of the steering wheel bracket 21, a mounting plate 24 is arranged on the triangular plate 23, an inverted L-shaped beam 25 is arranged on the mounting plate 24, a spring 22 is arranged between the L-shaped beam 25 and the mounting plate 24, and the top of the inverted L-shaped beam 25 is rotatably connected to the steering shaft 3. By arranging the spring 22, the vibration generated when the unmanned vehicle moves forward can be absorbed, the influence of the reverse thrust generated when moving forward can be reduced, and the vehicle can adapt to bumpy and rugged roads.

[0027] Furthermore, a third link 26 for connecting to the second link 6 is disposed on a side of the L-shaped beam 25 away from the spring 22 , and the second link 6 can drive the third link 26 to rotate around the steering shaft 3 .

[0028] Preferably, the acute angle of the triangular plate 23 is connected to the axle of the steering wheel. In the forward driving state, the triangular plate 23 connected to the axle is arranged in front of the steering shaft 3 to absorb the reverse thrust generated when the wheel moves forward.

[0029] like Figure 4 The encoder disc 10 shown is arranged on the chassis of the vehicle frame. The detection end of the encoder disc 10 is connected to the transmission plate 46. This component is used to detect the steering angle of the wheel. The principle is to control it through binary coding. The sensor uses an infrared sensor. When the sensor encounters white, the number is 1, and when the sensor encounters black, the number is 0. The bottom line is the left and right direction detection area, which is used to distinguish whether the current steering wheel is turning left or right.

[0030] In summary, when the device is used in an unmanned vehicle, when steering is required, the motor 41 is started, the output end of the motor 41 rotates the screw rod 43, the screw rod 43 drives the slider 45 to slide on the slide rail 42 through the screw nut 44, and the slider 45 drives the transmission plate 46, thereby driving the third link 26 through the first link 5 and the second link 6, and the third link 26 drives the steering wheel bracket 21 to rotate along the steering shaft 3 to achieve steering of the steering wheel; by arranging the shock absorbing assembly 2 between the steering shaft 3 and the steering wheel, the impact force directly acting on the steering shaft 3 is reduced, the wear and deformation problems are alleviated, and the stable steering performance can be maintained even on uneven or inclined roads, and the vehicle driving is safer; by arranging the screw rod 43 and the slider 45, etc., a new steering mechanism is formed, which can effectively solve the problem of insufficient torque in the case of steering on a slope; the wheel axle of the steering wheel is arranged before the relative steering shaft 3 position, which is used to absorb the reverse thrust generated when the wheel moves forward, improves the stability of vehicle driving, and extends the service life of the steering system.

[0031] The parts not specifically described in the above description are all prior art, or can be implemented by prior art. Moreover, the specific implementation cases described in this utility model are only preferred implementation cases of this utility model, and are not used to limit the implementation scope of this utility model. That is, all equivalent changes and modifications made according to the content of the patent scope of this utility model should be regarded as the technical scope of this utility model.

Claims

1. A shock-absorbing steering system for an unmanned vehicle, characterized in that: The invention comprises a steering mechanism (1) and a shock absorbing assembly (2), wherein the steering mechanism (1) is fixed on a frame chassis for mounting a steering wheel, and the shock absorbing assembly (2) is arranged between the frame chassis and the steering wheel. The steering mechanism (1) comprises a steering shaft (3) and a driving assembly (4), wherein the steering shaft (3) is arranged between the shock absorbing assembly (2) and the frame chassis, and a first connecting rod (5) is arranged at the bottom of the driving assembly (4), wherein one end of the first connecting rod (5) passes through the frame chassis and is connected to a second connecting rod (6), and one end of the second connecting rod (6) is connected to the shock absorbing assembly (2). In a driving state, the driving assembly (4) is started, and the shock absorbing assembly (2) is driven to rotate along the steering shaft (3) through the first connecting rod (5) and the second connecting rod (6), so that the steering wheel is turned.

2. The unmanned vehicle damping steering system according to claim 1, characterized in that: The driving assembly (4) comprises a motor (41) and a slide rail (42) both of which are arranged on the chassis of the vehicle frame; the output end of the motor (41) is connected to a screw rod (43); a screw rod nut (44) is sleeved on the screw rod (43); and a slide rail (42) is provided with a screw rod nut (44) connected to and driving a sliding slider (45) for sliding.

3. The unmanned vehicle damping steering system according to claim 2, characterized in that: The sliding block (45) is connected to a transmission plate (46), the bottom surface of the transmission plate (46) is connected to a first connecting rod (5), and a movable groove for sliding the first connecting rod (5) is provided on the frame chassis.

4. The unmanned vehicle damping steering system according to claim 1, characterized in that: The shock absorbing assembly (2) comprises a steering wheel bracket (21) and a spring (22); a triangular plate (23) for connecting the steering wheel is arranged at the bottom of the steering wheel bracket (21); a mounting plate (24) is arranged on the triangular plate (23); an inverted L-shaped beam (25) is arranged on the mounting plate (24); a spring (22) is arranged between the L-shaped beam (25) and the mounting plate (24); and the top of the inverted L-shaped beam (25) is connected to the steering shaft (3).

5. The unmanned vehicle damping steering system according to claim 4, characterized in that: A third connecting rod (26) for connecting to the second connecting rod (6) is arranged on the side of the L-shaped beam (25) away from the spring (22), and the second connecting rod (6) can drive the third connecting rod (26) to rotate around the steering shaft (3).

6. The unmanned vehicle damping steering system according to claim 4, characterized in that: The acute angle of the triangular plate (23) is connected to the axle of the steering wheel. In the forward driving state, in the same plane, the triangular plate (23) is connected to the axle before the relative steering shaft (3) to absorb the reverse thrust generated when the wheel moves forward.

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