CN111674459A

CN111674459A - Nested-connected rotating device

Info

Publication number: CN111674459A
Application number: CN202010556703.8A
Authority: CN
Inventors: 范桂霞
Original assignee: Beijing Mingnanhui Technology Co Ltd
Current assignee: Beijing Muyue Intelligent Technology Co ltd
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2020-09-18

Abstract

The invention provides a nested connection rotating device which is arranged on a supporting mechanism of a wheel and comprises a steering shaft vertically connected with the supporting mechanism, a steering driving mechanism fixedly connected with the upper end part of the steering shaft, and a nested mechanism which is arranged outside the steering shaft and fixedly connected with a vehicle body; the steering driving mechanism is used for driving the steering shaft to rotate in the nesting mechanism, so that the steering of the wheels is realized.

Description

Nested-connected rotating device

Technical Field

The invention relates to the field of vehicle engineering, in particular to a nested rotating device.

Background

Currently, in order to realize the steering function of a vehicle, a steering system is generally used for steering, and includes mechanical hydraulic power steering and electronic hydraulic power steering. The mechanical hydraulic power-assisted system mainly comprises a gear rack steering structure and a hydraulic system (a hydraulic power-assisted pump, a hydraulic cylinder, a piston and the like), wherein the hydraulic pump driven by an engine belt provides oil pressure to push the piston, and auxiliary force is generated to push a steering pull rod to assist the steering of wheels. But the structure is more complex and the maintenance cost is higher. And the power-assisted force of a pure mechanical hydraulic power-assisted system cannot be adjusted, so that different requirements on pointing accuracy during low-speed and high-speed running are hardly met.

In order to meet the requirements of disaster relief, emergency rescue, transportation in special terrain environments and the like, people have higher and higher requirements on trafficability, adaptability and flexibility of vehicles, the vehicles are required to buffer impact on vehicle bodies caused by different road surfaces when turning, the vehicle can be used for operation in areas where people cannot enter or are difficult to enter, and the vehicle can be suitable for driving and driving under the conditions of stair climbing and other complex road surfaces, such as grasslands, mud lands and the like, and the vehicle bodies are kept in a horizontal state all the time.

Disclosure of Invention

In order to solve the technical problems in the prior art, the invention aims to provide a nested rotating device, wherein a linear motion driving device for driving wheels to perform lifting motion and a rotating driving device for driving the wheels to perform turning motion are additionally arranged between an original wheel axle and a vehicle body, and the heights and the advancing directions of the wheels can be actively adjusted according to road conditions, so that the phenomenon that the vehicle can tip over or cannot walk when walking on different complex ground surfaces can be avoided.

In order to achieve the purpose, the invention provides the following technical scheme:

a nested connection rotating device is arranged on a supporting mechanism of a wheel and comprises a steering shaft vertically connected with the supporting mechanism, a steering driving mechanism fixedly connected with the upper end part of the steering shaft, and a nested mechanism arranged outside the steering shaft and fixedly connected with a vehicle body; the steering driving mechanism is used for driving the steering shaft to rotate in the nesting mechanism, so that the steering of the wheels is realized.

Preferably, the vehicle further comprises a hub motor arranged in the wheel, and the hub motor is connected with the supporting mechanism and provides power for the rotation of the wheel; wherein the support mechanism is an axle of a wheel.

Preferably, the nesting mechanism is fixedly connected with a chassis bracket arranged on the vehicle body; the vehicle body chassis support extends out from the vehicle body chassis and provides support for the gear train.

Preferably, the steering driving mechanism comprises a servo motor for driving the steering shaft to rotate, and the servo motor is connected with the steering shaft through a motor mover at the lower end.

Preferably, the steering device further comprises a linear motion driving mechanism which is arranged on the steering shaft and used for driving the wheels to perform lifting motion; the linear motion driving mechanism comprises a linear motor.

Preferably, the nesting mechanism comprises a linear slide rail cylinder and a linear bearing which are nested outside the steering shaft, and the linear slide rail and the linear bearing are respectively arranged above and below the linear motion driving mechanism; wherein, the linear bearing is used for providing support guidance for the up-and-down movement of the steering shaft.

Preferably, the steering driving mechanism further comprises a motor stator cooperating with the motor rotor.

Preferably, the inner diameter of the motor rotor is fixedly connected with the steering shaft, and the outer diameter of the motor rotor is matched with the motor stator.

Preferably, the outer diameter of the motor stator is connected with the linear slide rail cylinder through a sliding groove and can move up and down along the sliding groove.

Preferably, the linear motion driving mechanism and the steering driving mechanism are both fixedly arranged on the chassis support connected with the vehicle body, and the chassis support is positioned above the wheels.

Compared with the prior art, the nested connection rotating device provided by the invention achieves the following effects:

(1) the linear motion driving device and the rotation driving device are additionally arranged between the original wheel axle and the vehicle body, so that the height and the advancing direction of the vehicle can be actively adjusted according to road conditions, and effective driving on special ground such as hillsides, sand, grasslands, swamps and stairs is realized.

(2) The linear motion driving device and the rotation driving device are not mutually affected in linkage matching, the adjustment of the height of the wheels and the adjustment of the advancing direction can be freely combined and changed, compensation action is implemented when different road surfaces are met so as to maintain the stability of the vehicle body, the stable state of the trolley under various road condition conditions is met, and the operation requirements of various road condition environments are greatly met.

Drawings

FIG. 1 is a perspective view of a preferred embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of I in FIG. 1;

FIG. 3 is a front view of a preferred embodiment of the present invention;

FIG. 4 is a cross-sectional view B-B of FIG. 3;

FIG. 5 is a top view of a preferred embodiment of the present invention;

wherein, 1-steering shaft; 2-a motor rotor; 3-a motor stator; 4-a linear slide rail cylinder; 5-a chassis support; 6-a linear motor; 7-a linear bearing; 8-vehicle wheels; 9-a wheel axle; 10-hub motor.

Detailed Description

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.

Referring to fig. 1-5, in a preferred embodiment, a cart provided with a nested connection of rotating devices is disclosed; the nested connection rotating device comprises a steering shaft 1 which is vertically connected with a wheel shaft 9 as a supporting mechanism, a steering driving mechanism which is fixedly connected with the upper end part of the steering shaft 1, and a nested mechanism which is arranged outside the steering shaft 1 and is fixedly connected with a vehicle body; the steering driving mechanism is used for driving the steering shaft 1 to rotate in the nesting mechanism so as to realize the steering of the wheels 8.

Further, the vehicle wheel further comprises an in-wheel motor 10 arranged in the vehicle wheel 8, wherein the in-wheel motor 10 is connected with the wheel shaft 9 and provides power for rotation of the vehicle wheel 8.

Further, the nesting mechanism is fixedly connected with a chassis bracket 5 arranged on the vehicle body; the vehicle body chassis bracket 5 extends out of the vehicle body chassis and provides support for the gear train; the nesting mechanism comprises a linear slide rail barrel 4.

Further, the steering driving mechanism comprises a servo motor for driving the steering shaft 1 to rotate, and the servo motor is connected with the steering shaft 1 through a motor rotor at the lower end, so that the steering shaft 1 rotates in the linear slide rail barrel 4.

Referring to fig. 1-5, in another preferred embodiment, a cart provided with a nested connection of turning devices is disclosed; the nested connection rotating device comprises a steering shaft 1 which is vertically connected with a wheel shaft 9 as a supporting mechanism, a steering driving mechanism which is fixedly connected with the upper end part of the steering shaft 1, and a nested mechanism which is arranged outside the steering shaft 1 and is fixedly connected with a vehicle body; the steering driving mechanism is used for driving the steering shaft 1 to rotate in the nesting mechanism, so that the steering of the wheels 8 is realized.

Further, the device also comprises a linear motion driving mechanism which is arranged on the steering shaft 1 and is used for driving the wheels 8 to perform lifting motion; the linear motion drive mechanism comprises a linear motor 6.

Furthermore, the nesting mechanism is fixedly connected with a chassis bracket 5 arranged on the vehicle body; the vehicle body chassis bracket 5 extends out of the vehicle body chassis and provides support for the gear train; the nesting mechanism comprises a linear slide rail cylinder 4 and a linear bearing 7 which are nested outside the steering shaft 1, and the linear slide rail and the linear bearing 7 are respectively arranged above and below the linear motion driving mechanism; wherein, the linear bearing 7 is used for providing a supporting guide for the up-and-down movement of the steering shaft 1.

Further, the steering driving mechanism comprises a servo motor for driving the steering shaft 1 to rotate, the servo motor is connected with the steering shaft 1 through a motor rotor at the lower end, and the steering driving mechanism further comprises a motor stator 3 matched with the motor rotor 2.

Further, the inner diameter of the motor rotor 2 is fixedly connected with the steering shaft 1, and the outer diameter of the motor rotor 2 is matched with the inner diameter of the motor stator 3; further, the outer diameter of the motor stator 3 is connected with the linear slide rail barrel 4 through a sliding groove and can move up and down along the sliding groove.

Further, the linear motion driving mechanism and the steering driving mechanism are both fixedly arranged on the chassis support 5 connected with the vehicle body, and the chassis support 5 is positioned above the wheels 8.

Furthermore, the rotation devices which are connected in a nested manner are arranged at the bottoms of the trolleys, so that when the vehicles pass through uneven road surfaces, one wheel can be controlled to realize actions of lifting, descending, turning and the like according to the road conditions, and other wheels are controlled to simultaneously implement compensation actions to maintain the stability of the vehicle body, so that the stable state of the trolleys under various road conditions is met, and the operation requirements of various road conditions and environments are greatly met.

The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.

Claims

1. A nested connection rotating device is arranged on a supporting mechanism of a wheel and is characterized by comprising a steering shaft vertically connected with the supporting mechanism, a steering driving mechanism fixedly connected with the upper end part of the steering shaft, and a nesting mechanism arranged outside the steering shaft and fixedly connected with a vehicle body; the steering driving mechanism is used for driving the steering shaft to rotate in the nesting mechanism, so that the steering of the wheels is realized.

2. A nested rotation device according to claim 1, further comprising an in-wheel motor disposed within the wheel, the in-wheel motor being coupled to the support mechanism to provide power for rotation of the wheel.

3. A nestingly connected rotatable device as claimed in claim 2, wherein the nesting means is fixedly connected to a chassis support provided on the vehicle body.

4. A nested rotation device according to claim 3, wherein the steering drive mechanism comprises a servo motor for driving the steering shaft in rotation, the servo motor being connected to the steering shaft by a lower motor mover.

5. A nestingly connected rotary device as claimed in claim 4, further comprising a linear drive mechanism provided on the steering shaft for driving the wheels in an elevating movement.

6. A nested rotation device according to claim 5, wherein the nesting mechanism comprises a linear slide barrel and a linear bearing nested outside the steering shaft, and the linear slide and the linear bearing are respectively arranged above and below the linear motion driving mechanism.

7. A nested rotation device according to claim 6, wherein the steering drive mechanism further comprises a motor stator cooperating with the motor rotor.

8. A nestingly connected rotary device as claimed in claim 7, wherein the inner diameter of the motor rotor is fixedly connected to the steering shaft and the outer diameter of the motor rotor is adapted to fit the motor stator.

9. A nestingly connected rotary device as claimed in claim 8, wherein the outer diameter of the stator of the motor is connected to the linear slide barrel via a slide slot, and is movable up and down the slide slot.

10. A nestingly connected rotary device as claimed in claim 9, wherein the linear motion drive mechanism and the steering drive mechanism are both mounted on a chassis support attached to the vehicle body, the chassis support being located above the wheels.