阅读说明：本技术 一种多模可变形的轮式移动机构 (Multi-mode deformable wheel type moving mechanism ) 是由 秦建军 郑皓冉 张昊 杨芳 高磊 于 2021-01-28 设计创作，主要内容包括：本发明公开了一种多模可变形的轮式移动机构,包括车体、在车体上设置的多个翻转伸缩轮组件和传动机构,每个翻转伸缩轮组件中一对伸缩滑杆设置在滑轨翻转外壳的两端并与其滑动连接,T形扭杆通过一对连杆带动一对伸缩滑杆伸缩滑动。传动机构包括设置在车体上的伸缩电机和翻转电机,翻转电机与滑轨翻转外壳传动连接,使翻转伸缩轮组件能够翻转,以在稳定模式、越野模式、攀爬越障模式三者间切换；伸缩电机与T形扭杆传动连接,用于改变一对轮毂电机车轮之间的距离,以调整个轮式移动机构的运动重心。该移动机构通过设置具有电机的传动机构,可以带动前后两组翻转伸缩轮组件完成伸缩与翻转,实现多工作模式的转换,使轮式机器人适应不同地形。(The invention discloses a multimode deformable wheel type moving mechanism which comprises a vehicle body, a plurality of overturning telescopic wheel assemblies and a transmission mechanism, wherein the overturning telescopic wheel assemblies are arranged on the vehicle body, a pair of telescopic slide bars in each overturning telescopic wheel assembly are arranged at two ends of a slide rail overturning shell and are connected with the slide rail overturning shell in a sliding manner, and a T-shaped torsion bar drives the pair of telescopic slide bars to slide in a telescopic manner through a pair of connecting rods. The transmission mechanism comprises a telescopic motor and a turnover motor which are arranged on the vehicle body, the turnover motor is in transmission connection with the slide rail turnover shell, so that the turnover telescopic wheel assembly can be turned over to switch among a stable mode, a cross-country mode and a climbing obstacle crossing mode; the telescopic motor is in transmission connection with the T-shaped torsion bar and used for changing the distance between a pair of wheel hub motor wheels so as to adjust the motion gravity center of the wheel type moving mechanism. The moving mechanism can drive the front and rear two groups of overturning telescopic wheel assemblies to complete stretching and overturning through the transmission mechanism with the motor, so that conversion of multiple working modes is realized, and the wheeled robot is suitable for different terrains.)

1. A multimode deformable wheel type moving mechanism comprises a vehicle body (10),

also comprises a plurality of turnover telescopic wheel assemblies (30) arranged on the vehicle body, each turnover telescopic wheel assembly (30) comprises a slide rail turnover shell (31), a T-shaped torsion bar (34), a pair of telescopic slide bars (32), a pair of connecting rods (35) and a pair of hub motor wheels (36),

wherein, the pair of telescopic sliding rods (32) are arranged at two ends of the sliding rail turnover shell (31) and are connected with the sliding rail turnover shell in a sliding way, the T-shaped torsion bar (34) drives the pair of telescopic sliding rods (32) to telescopically slide through a pair of connecting rods (35),

also comprises a transmission mechanism (20) which comprises a telescopic motor (21) and a turnover motor (22) which are arranged on the vehicle body (10),

the overturning motor (22) is in transmission connection with the sliding rail overturning shell (31), so that the overturning telescopic wheel assembly (30) can be overturned to switch among a stable mode, a cross-country mode and a climbing obstacle crossing mode;

the telescopic motor (21) is in transmission connection with the T-shaped torsion bar (34) and is used for changing the distance between a pair of wheel hub motor wheels (36) so as to adjust the motion gravity center of the wheel type moving mechanism.

2. The multi-mode deformable wheeled locomotion mechanism of claim 1, characterized in that the T-shaped torsion bar (34) is coaxially rotationally connected with the trolley upending housing (31).

3. The multimode deformable wheeled mobile mechanism of claim 1, characterized in that, two ends of said slide turnover housing (31) are provided with slide end caps (33), said slide end caps (33) are used for sealing the ends of said slide turnover housing (31) and limiting said telescopic slide rods (32).

4. The multi-mode deformable wheeled locomotion mechanism of claim 1, characterized in that the vehicle body (10) comprises a housing (11), a motor shaft mounting (12), and a motor mounting (13).

5. The multimode deformable wheeled locomotion mechanism of claim 1, characterized in that a pair of said T-shaped torsion bars (34) located on both sides of said vehicle body (10) are connected by a synchronizing shaft, said synchronizing shaft being drivingly connected with said telescopic motor (21).

6. The multi-mode deformable wheeled movement mechanism of claim 5, characterized in that said synchronizing shafts comprise semi-cylindrical upper and lower semi-synchronizing shafts (213, 214).

7. The multimode deformable wheeled locomotion mechanism of claim 1, characterized in that the transmission mechanism (20) further comprises a turning motor driving shaft (23) and a turning transfer driven shaft (24), wherein the turning motor driving shaft (23) is connected with the turning motor (22), the turning motor driving shaft (23) is connected with the turning transfer driven shaft (24) through synchronous belt transmission, and the turning transfer driven shaft (24) is in transmission connection with the slide rail turning shell (31) through synchronous belt transmission.

Technical Field

The invention relates to the field of moving mechanisms, in particular to a multi-mode deformable wheel type moving mechanism.

Background

A mobile Robot (Robot) is a machine device that automatically performs work. It can accept human command, run the program programmed in advance, and also can operate according to the principle outline action made by artificial intelligence technology. The task of which is to assist or replace human work, such as production, construction, or dangerous work.

The mobile robot can be divided into: a wheel type mobile robot, a walking mobile robot, a snake robot, a crawler type mobile robot, a crawling robot, and the like.

Among them, a large number of wheeled robots are currently on the market, and the wheeled robots are diverse. In order to improve the trafficability and stability of the robot, designers usually increase trafficability through a shock absorber or a simple lifting chassis, but most of the schemes are single in mode conversion, are not comprehensive in terrain adaptability, and cannot adapt to complex ground conditions.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a multi-mode deformable wheel type moving mechanism, which achieves wheel type deformation by driving a turnover telescopic wheel component to stretch and turn through a motor, and achieves terrain adaptation of a wheel type robot in different modes.

The invention provides a multi-mode deformable wheel type moving mechanism which comprises a vehicle body, a plurality of overturning telescopic wheel assemblies and a transmission mechanism, wherein the overturning telescopic wheel assemblies are arranged on the vehicle body, each overturning telescopic wheel assembly comprises a sliding rail overturning shell, a T-shaped torsion bar, a pair of telescopic slide bars, a pair of connecting rods and a pair of hub motor wheels, the pair of telescopic slide bars are arranged at two ends of the sliding rail overturning shell and are connected with the sliding rail overturning shell in a sliding mode, and the T-shaped torsion bar drives the pair of telescopic slide bars to slide in a telescopic mode through the pair of connecting rods.

The transmission mechanism comprises a telescopic motor and a turnover motor which are arranged on the vehicle body, wherein the turnover motor is in transmission connection with the slide rail turnover shell, so that the turnover telescopic wheel assembly can be turned over to switch among a stable mode, a cross-country mode and a climbing obstacle crossing mode; the telescopic motor is in transmission connection with the T-shaped torsion bar and used for changing the distance between a pair of wheels of the hub motor so as to adjust the motion gravity center of the wheel type moving mechanism.

Preferably, the T-shaped torsion bar is coaxially and rotatably connected with the slide rail turnover housing.

Preferably, the two ends of the sliding rail overturning shell are provided with sliding rail end covers which are used for sealing the end part of the sliding rail overturning shell and limiting the telescopic sliding rod.

Preferably, the vehicle body includes a housing, a motor shaft mounting bracket, and a motor mounting bracket.

Preferably, the pair of T-shaped torsion bars positioned on two sides of the vehicle body are connected through a synchronizing shaft, and the synchronizing shaft is in transmission connection with the telescopic motor.

Preferably, the synchronizing shaft comprises a semi-cylindrical upper semi-synchronizing shaft and a semi-cylindrical lower semi-synchronizing shaft.

Preferably, the transmission mechanism further comprises a turnover motor driving shaft and a turnover transfer driven shaft, the turnover motor driving shaft is connected with the turnover motor, the turnover motor driving shaft is connected with the turnover transfer driven shaft through synchronous belt transmission, and the turnover transfer driven shaft is in transmission connection with the sliding rail turnover shell through a synchronous belt.

The multimode deformable wheel type moving mechanism provided by the invention has the following beneficial effects: 1) by arranging the transmission mechanism with the motor, the front and rear groups of overturning telescopic wheel assemblies can be driven to complete the telescopic and overturning actions, the conversion of multiple working modes is realized, and the terrain adaptation of the wheeled robot under different modes is achieved; 2) when the road surface condition is good, the stable mode can be switched to, the integral motion gravity center can be reduced, the pressure under motion is increased, and the motion stability of the mechanism is enhanced; under the condition of a bumpy broken stone road, the telescopic slide rod extends, the slide rail overturns the shell to be upright, and the chassis of the whole vehicle is lifted to increase the integral trafficability so as to form a cross-country mode; when climbing or obstacle crossing is needed, the overturning telescopic wheel assemblies at the front end and the rear end can be respectively controlled to overturn through the motor, and the integral climbing and obstacle crossing mode is realized.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of a multi-mode deformable wheel movement mechanism of the present invention;

FIG. 2 is a schematic view of a vehicle body of the multimode deformable wheeled locomotion mechanism of the present invention;

FIG. 3 is a first schematic diagram of a transmission mechanism of the multi-mode deformable wheeled movement mechanism of the present invention;

FIG. 4 is a second schematic structural diagram of a transmission mechanism of the multi-mode deformable wheel type moving mechanism of the present invention;

FIG. 5 is a third schematic structural view of a transmission mechanism of the multi-mode deformable wheeled movement mechanism of the present invention;

FIG. 6 is a first schematic view of a turning retractable wheel assembly of the multi-mode deformable wheel type moving mechanism of the present invention;

FIG. 7 is a second schematic structural view of a tilt-telescope assembly of the multi-mode deformable wheeled mobile mechanism of the present invention;

FIG. 8 is a schematic view of the multi-mode deformable wheel movement mechanism of the present invention in a stable mode;

FIG. 9 is a schematic view of the multi-mode deformable wheeled locomotion mechanism of the present invention in an off-road mode; and

fig. 10a to 10e are schematic structural views illustrating a process of crossing an obstacle by the multimode deformable wheel type moving mechanism of the invention.

Description of the reference numerals

10. A vehicle body; 20. a transmission mechanism; 30. turning over the telescopic wheel assembly; 11. a housing; 12. a motor shaft mounting bracket; 13. a motor mounting bracket; 21. a telescopic motor; 22. turning over a motor; 23. turning over a driving shaft of a motor; 24. turning over the transfer driven shaft; 25. a driving shaft synchronous belt pulley of a turnover motor; 26. turning over the driven shaft synchronous belt pulley; 27. turning over the driven shaft to transfer the synchronous belt pulley; 28. turning over the end cover of the driven shaft; 29. the wheel end is provided with a transfer synchronous belt wheel; 210. a driven shaft synchronous belt pulley of a telescopic motor; 211. a synchronous belt pulley of a driving shaft of a telescopic motor; 212. a telescopic driving shaft; 213. an upper semi-synchronizing shaft; 214. a lower semi-synchronizing shaft; 31. the sliding rail overturns the shell; 32. a telescopic slide bar; 33. a slide rail end cover; 34. a T-shaped torsion bar; 35. a connecting rod; 36. a hub motor wheel; 37. a height washer.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1, the multi-mode deformable wheel type moving mechanism of the present invention includes a vehicle body 10, a transmission mechanism 20 and two pairs of turning retractable wheel assemblies 30, which are disposed on the vehicle body 10, wherein the transmission mechanism 20 drives the turning retractable wheel assemblies 30 to turn and stretch to deform, so as to switch among a stable mode, a cross-country mode and a climbing obstacle crossing mode, so as to adapt to different terrains.

Specifically, as shown in fig. 2, the vehicle body 10 includes a housing 11, a motor shaft mounting bracket 12, and a motor mounting bracket 13, and the housing 11 and the two sets of motor shaft mounting brackets 12 and the motor mounting bracket 13 are fixed by mechanical screws, respectively.

Specifically, as shown in fig. 6, each of the tilt and telescoping wheel assemblies 30 includes a slide tilt housing 31, a pair of telescoping slide bars 32, a slide end cap 33, a T-shaped torsion bar 34, a pair of links 35, a pair of hub motor wheels 36, and a height washer 37. Wherein, a pair of telescopic sliding rods 32 are arranged at two ends of the sliding rail turnover shell 31 and are connected with the sliding rail turnover shell in a sliding way, and a hub motor wheel 36 is arranged at the outer end of the telescopic sliding rods 32.

As shown in fig. 6 and 7, the middle of the slide rail turnover housing 31 is rotatably connected to the vehicle body 10, and the slide rail turnover housing 31 is in transmission connection with the turnover motor 22, so that the turnover telescopic wheel assembly 30 can rotate and switch among a stable mode, a cross-country mode and a climbing obstacle crossing mode.

The outer end of the telescopic slide bar 32 is rotatably connected with one end of a connecting rod 35, the T-shaped torsion bar 34 is rotatably connected with the other end of the connecting rod 35, the T-shaped torsion bar 34 is coaxially and rotatably connected with the slide rail turnover shell 31, and the telescopic motor 21 is in transmission connection with the T-shaped torsion bar 34 and is used for changing the distance between a pair of wheel hub motor wheels 36 so as to adjust the motion gravity center of the wheel type moving mechanism and increase the passing performance and stability of the wheel type moving mechanism.

In this embodiment, as shown in fig. 6 and 7, the track roll-over housing 31 has a cylindrical tube, the T-shaped torsion bar 34 has a rotating shaft, the rotating shaft of the T-shaped torsion bar 34 is engaged with the cylindrical tube of the track roll-over housing 31 to form a coaxial rotation, and the T-shaped torsion bar 34 and the track roll-over housing 31 are partially axially limited and rotationally connected by bearings at two ends inside the track roll-over housing 31.

The slide rail turnover shell 31 is connected with the telescopic slide rod 32 in a sliding manner through an internal slide rail, the slide rail turnover shell is limited through a slide rail end cover 33, and the slide rail end cover 33 and the slide rail turnover shell 31 are fixed through a mechanical screw; the sliding rail end cover 33 is used for sealing the end of the sliding rail turnover shell 31 and limiting the telescopic sliding rod 32.

The output shaft of the wheel hub motor wheel 36 is circumferentially fixed with the height washer 37 and the telescopic slide rod 32 through keys respectively, and is axially fixed with the outer end of the telescopic slide rod 32 through nuts; the slide rail turnover shell 31 and the shell 11 are axially limited by a shaft shoulder and a clamp spring and are rotationally connected through a bearing for transmission.

Specifically, as shown in fig. 3, the transmission mechanism 20 includes a telescopic motor 21, a tumble motor 22, a tumble motor driving shaft 23, a tumble transfer driven shaft 24, a tumble motor driving shaft synchronous pulley 25, a tumble driven shaft synchronous pulley 26, a tumble driven shaft transfer synchronous pulley 27, a tumble driven shaft end cover 28, a wheel end transfer synchronous pulley 29, a telescopic motor driven shaft synchronous pulley 210, a telescopic motor driving shaft synchronous pulley 211, a telescopic driving shaft 212, and a synchronous shaft. Wherein the synchronizing shafts comprise a semi-cylindrical upper half synchronizing shaft 213 and a lower half synchronizing shaft 214. The telescopic motor 21 and the overturning motor 22 are fixedly connected with the upper and lower installation positions of the motor installation frame 13 through bolts respectively.

As shown in fig. 3 to 5, the telescopic driving shaft 212 is connected to the telescopic motor 21, the pair of T-shaped torsion bars 34 are connected to both ends of the synchronizing shaft, respectively, and the telescopic driving shaft 212 and the synchronizing shaft are connected by a synchronous belt drive. The telescopic driving shaft 212 is provided with a telescopic motor driving shaft synchronous pulley 211, the synchronous shaft is provided with a telescopic motor driven shaft synchronous pulley 210, and the telescopic motor driving shaft synchronous pulley 211 is connected with the telescopic motor driven shaft synchronous pulley 210 through a synchronous belt.

In this embodiment, one end of the telescopic motor 21 transmits power in a key shape, the other end is rotatably connected with the motor shaft mounting frame 12 through a bearing and is limited through a shaft shoulder, and the T-shaped torsion bar 34, the upper semi-synchronizing shaft 213 and the lower semi-synchronizing shaft 214 are further limited through a set screw by a threaded hole on the T-shaped torsion bar 34.

As shown in fig. 4, the integral synchronizing shaft composed of the driven shaft synchronizing pulley 210 of the telescopic motor, the upper semi-synchronizing shaft 213 and the lower semi-synchronizing shaft 214 is limited by a shaft shoulder and a snap spring and is fixed by a set screw to rotate circumferentially, the upper semi-synchronizing shaft 213 and the lower semi-synchronizing shaft 214 are fixed by a mechanical screw and are in key-shaped power transmission with the T-shaped torsion bar 34, the shaft shoulder in the key is limited, and the integral axial limitation is further performed by the mechanical screw; the synchronous belt pulley 211 of the driving shaft of the telescopic motor and the telescopic driving shaft 212 are fixed by a set screw to rotate circumferentially and are limited by a shaft shoulder and a clamp spring.

Specifically, the turnover motor driving shaft 23 is connected with the turnover motor 22, the turnover motor driving shaft 23 is connected with the turnover transfer driven shaft 24 through synchronous belt transmission, and the turnover transfer driven shaft 24 is in transmission connection with the sliding rail turnover shell 31 through a synchronous belt. The turning motor driving shaft 23 is provided with a turning motor driving shaft synchronous belt pulley 25, the turning transfer driven shaft 24 is provided with a turning driven shaft synchronous belt pulley 26, and the turning driven shaft synchronous belt pulley 26 is connected with the turning motor driving shaft synchronous belt pulley 25 through synchronous belt transmission.

Wherein, a pair of turnover driven shaft transfer synchronous belt pulleys 27 are arranged on the turnover driven shaft 24, a wheel end transfer synchronous belt pulley 29 is arranged on the slide rail turnover shell 31, and the turnover driven shaft transfer synchronous belt pulley 27 is connected with the wheel end transfer synchronous belt pulley 29 through synchronous belt transmission. Two ends of the turning transfer driven shaft 24 are respectively provided with a turning driven shaft end cover 28, and the turning driven shaft end cover 28 is connected with the vehicle body 10 through a rolling bearing.

In the implementation, the driving shaft 23 of the turning motor and one end of the turning motor 22 transmit power in a key shape, and the other end is in limit and rotary connection with the motor shaft mounting frame 12 and a shaft shoulder through a bearing; the wheel end transfer synchronous belt pulley 29 and the slide rail turnover shell 31 are limited by a shaft shoulder and a clamp spring and are fixed to rotate circumferentially through a set screw;

as shown in fig. 5, the turning motor driving shaft synchronous pulley 25 and the turning motor driving shaft 23 are fixed to rotate circumferentially by a set screw and are limited by a shaft shoulder and a clamp spring, the two ends of the turning transfer driven shaft 24 are respectively connected with the mechanical screws of the turning driven shaft end cover 28 and are positioned by the inner shaft shoulder of the turning driven shaft end cover 28, the turning driven shaft end cover 28 is connected with the shell 11 through a rolling bearing and is limited by the outer shaft shoulder, and the turning driven shaft synchronous pulley 26 and the turning driven shaft transfer synchronous pulley 27 are respectively limited by the shaft shoulder and the clamp spring and are fixed to rotate circumferentially by the set screw with the turning transfer driven shaft 24.

The working principle and the working process of the invention are briefly described below with reference to the accompanying drawings.

As shown in fig. 8, when the track turnover shell 31 is driven by the turnover motor 22 to rotate and the turnover telescopic wheel assembly 30 is in a horizontal state under good road conditions, two hub motor wheels 36 on the same turnover telescopic wheel assembly 30 are both in contact with the ground, forming a stable mode, which can reduce the overall center of gravity of motion, increase the pressure under motion, enhance the motion stability of the mechanism,

as shown in fig. 9, under a slightly bumpy road condition with gravels, the tilting motor 22 drives the slide rail tilting housing 31 to rotate, and when the tilting retractable wheel assembly 30 is in a vertical state, only one wheel hub motor wheel 36 in the same tilting retractable wheel assembly 30 contacts with the ground, so as to form a cross-country mode, and meanwhile, the telescopic motor 21 can drive the T-shaped torsion bar 34 to rotate, so that the distance between the two wheel hub motor wheels 36 on the same tilting retractable wheel assembly 30 changes, and the chassis of the whole vehicle can be raised in the motion mode to increase the overall trafficability.

As shown in fig. 10a to 10e, when climbing or obstacle crossing is required, the slide rail turnover housing 31 at the front end of the vehicle body 10 is driven to rotate by the turnover motor 22, the turnover telescopic wheel assembly 30 is changed from a vertical state to an inclined state, the hub motor wheel 36 at the front end of the turnover telescopic wheel assembly 30 spans over the obstacle and rotates to the front side of the obstacle, and the turnover telescopic wheel assembly 30 at the front end of the vehicle body 10 continues to rotate to completely span over the obstacle.

Similarly, after the overturning telescopic wheel assembly 30 at the front end of the vehicle body 10 completely crosses the obstacle, the overturning motor 22 drives the sliding rail overturning shell 31 at the rear part of the vehicle body 10 to rotate, so that the overturning telescopic wheel assembly 30 is changed from a vertical state to an inclined state, then the obstacle is crossed, and finally the purpose that the whole wheel type moving mechanism crosses the obstacle is achieved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.