阅读说明：本技术 一种微型水下机器人的机械式转向结构 (Mechanical steering structure of miniature underwater robot ) 是由 徐松 王丽娟 孙雨 李垣江 黄巧亮 陈迅 于 2021-10-13 设计创作，主要内容包括：本发明公开了一种微型水下机器人的机械式转向结构,涉及水下机器人技术领域,解决了现有的轮式水下机器人大多只能通过一对轮组进行转向,转向时转向半径大,灵活性较差的问题。一种微型水下机器人的机械式转向结构,包括底盘模块；所述前转向板固定连接在中部支撑梁的梁体前端。该装置在使用过程中,水下机器人通过底盘模块进行转向时,前转向板内部驱动轮模块能够在前轮转向模块的驱动下旋转移动轮进行转向,且后转向板内部驱动轮模块能够在后轮随动模块的同步作用下跟随前轮转向模块进行转向,且后轮随动模块跟随前轮转向模块的转向幅度可自由调节,方便灵活,自由度高。(The invention discloses a mechanical steering structure of a miniature underwater robot, relates to the technical field of underwater robots, and solves the problems that most of the existing wheeled underwater robots can only steer through a pair of wheel sets, and the steering radius is large and the flexibility is poor during steering. A mechanical steering structure of a micro underwater robot comprises a chassis module; the front steering plate is fixedly connected to the front end of the beam body of the middle supporting beam. The device is in the use, and when underwater robot turned to through the chassis module, the inside drive wheel module of preceding deflector can turn to the driving wheel under the drive of front wheel steering module soon, and the inside drive wheel module of back deflector can follow the front wheel steering module under the synchronization of rear wheel follow-up module and turn to, and the amplitude of turning to of rear wheel follow-up module following front wheel steering module can freely be adjusted, and is convenient nimble, and the degree of freedom is high.)

1. The utility model provides a miniature underwater robot's mechanical type turns to structure which characterized in that: comprising a chassis module (1);

the underwater robot comprises a chassis module (1) and a control module, wherein the chassis module (1) comprises a middle supporting beam (101), a front steering plate (102), a rear steering plate (103) and a connecting block (104), the front steering plate (102) is fixedly connected to the front end of a beam body of the middle supporting beam (101), the rear steering plate (103) is fixedly connected to the rear end of the beam body of the middle supporting beam (101), the connecting block (104) is fixedly connected to the middle parts of top plate bodies of the front steering plate (102) and the rear steering plate (103), and the top of the connecting block (104) is fixedly connected with an underwater robot main body;

and driving wheel modules (2) are arranged on two sides of the interior of the front steering plate (102) and the interior of the rear steering plate (103).

2. The mechanical steering structure of a micro underwater robot as claimed in claim 1, wherein: the driving wheel module (2) comprises:

the supporting steering column (201), the section of the column body supporting the steering column (201) is T-shaped, and the top and the bottom of the supporting steering column (201) are rotatably connected inside the plate body of the front steering plate (102);

the driving motor (202), the driving motor (202) is fixed inside the column supporting the steering column (201);

and the moving wheel (203), the moving wheel (203) is rotatably connected inside the transverse column supporting the steering column (201), and the moving wheel (203) is installed outside the rotating shaft of the driving motor (202).

3. The mechanical steering structure of a micro underwater robot as claimed in claim 1, wherein: the front steering plate is characterized in that a front wheel steering module (3) is installed at the top of a driving wheel module (2) in the front steering plate (102), and a rear wheel follow-up module (4) is installed at the top of a driving wheel module (2) in the rear steering plate (103).

4. The mechanical steering structure of a micro underwater robot as claimed in claim 3, wherein: the front wheel steering module (3) comprises:

one end of the linkage steering rod (301) is fixedly connected to the top of a column body of the support steering column (201) in the front steering plate (102);

the two ends of the rod body of the linkage driving rod (302) are respectively and rotatably connected with the outer ends of the rod bodies of the linkage steering rods (301) at the two ends of the front steering plate (102);

the steering control block (303), the steering control block (303) is rotatably connected inside the middle supporting beam (101), and the bottom of a block body of the steering control block (303) is fixedly connected with a linkage gear (3031);

the steering motor (304), the steering motor (304) is fixed on the beam body side of the middle support beam (101), the top of a rotating shaft of the steering motor (304) is fixedly connected with a driving gear, and the driving gear is in meshing transmission connection with the gear teeth of the linkage gear (3031).

5. The mechanical steering structure of a micro underwater robot as claimed in claim 4, wherein: the top of the middle rod body of the linkage driving rod (302) is provided with a steering linkage column (3021), a strip-shaped steering control groove (3032) is arranged in the block body of the steering control block (303), and the steering linkage column (3021) is inserted in the steering control groove (3032).

6. The mechanical steering structure of a micro underwater robot as claimed in claim 3, wherein: the rear wheel follow-up module (4) comprises:

the positioning sleeve block (401) is fixedly connected to the top of a column body of the supporting steering column (201) in the rear steering plate (103);

the telescopic linkage rod (402), the telescopic linkage rod (402) is inserted into the block body of the positioning sleeve block (401);

the adjusting motor (403), the adjusting motor (403) is fixed on the top of the block body of the positioning sleeve block (401);

one end of the rod body of the adjusting rod (404) is fixedly connected with one end of the rotating shaft of the adjusting motor (403);

two ends of a rod body of the follow-up driving rod (405) are respectively and rotatably connected with the outer ends of telescopic linkage rods (402) at two ends of the rear steering plate (103);

and the follow-up steering block (406), wherein the follow-up steering block (406) is rotatably connected inside the beam body of the middle supporting beam (101).

7. The mechanical steering structure of a micro underwater robot as claimed in claim 6, wherein: the bottom of the block body of the follow-up steering block (406) is fixedly connected with a follow-up gear (4061), and gear teeth of the follow-up gear (4061) are meshed with gear teeth of the linkage gear (3031) for transmission.

8. The mechanical steering structure of a micro underwater robot as claimed in claim 6, wherein: the servo control rod is characterized in that a servo control column (4051) is arranged at the bottom of the middle rod body of the servo drive rod (405), a servo control groove (4062) is arranged inside a block body of the servo steering block (406), the groove body length of the servo control groove (4062) is larger than that of the steering control groove (3032), and one end of the groove body of the servo control groove (4062) is located at the circle center position of the servo gear (4061).

9. The mechanical steering structure of a micro underwater robot as claimed in claim 6, wherein: the outside of the rod body of the adjusting rod (404) is provided with threads, the end part of the rod body of the follow-up driving rod (405) is provided with an adjusting threaded hole (4052), and the adjusting rod (404) is screwed in the adjusting threaded hole (4052) through the rod body threads.

10. The mechanical steering structure of a micro underwater robot as claimed in claim 6, wherein: the cross-sectional shape of the rod body of flexible gangbar (402) is square design, and the block inside of location cover piece (401) is equipped with constant head tank (4011), and flexible gangbar (402) is pegged graft in the inside of constant head tank (4011).

Technical Field

The invention belongs to the technical field of underwater robots, and particularly relates to a mechanical steering structure of a miniature underwater robot.

Background

The underwater robot is also called as an unmanned remote control submersible, can replace human beings to carry out various operations under water, wherein, a steering mechanism is an important component of the underwater robot, and the underwater robot can freely steer and run under the water through the steering mechanism.

If the application number is: CN201810016515.9 discloses a method, an apparatus and a system for calibrating steering error of a robot, which comprises setting a rectangular fence; after the robot drives into the fence, scanning the environment through a laser radar arranged on the robot, monitoring 4 side lines of the fence, and acquiring an initial attitude angle of the robot relative to the fence; controlling the robot to rotate in place by an angle; acquiring a current attitude angle of the robot relative to the fence through a laser radar; and calculating the steering error of the robot according to the initial attitude angle, the current attitude angle and the rotation angle. The invention can calculate the relative position error of the left wheel and the right wheel of the robot according to the steering error, calibrate the relative position error of the wheels, and compensate the error in the subsequent movement process of the robot, thereby reducing the angle error when the robot makes turning movement.

Most of existing wheeled underwater robots can only steer through a pair of wheel sets, namely, the pair of wheel sets can movably steer, the other wheel set is fixedly driven, the steering radius is large when the underwater robot steers due to the structure, the flexibility is poor, the underwater robot is not suitable for steering and turning around in narrow channels or environments, the adaptability is poor, and the practicability is not high.

Therefore, in view of the above, research and improvement are made on the existing structure and defects, and a mechanical steering structure of a micro underwater robot is provided, so as to achieve the purpose of higher practical value.

Disclosure of Invention

In order to solve the technical problems, the invention provides a mechanical steering structure of a miniature underwater robot, which aims to solve the problems that most of the existing wheeled underwater robots can only steer through a pair of wheel sets, namely, one pair of wheel sets can steer movably, and the other wheel set is driven fixedly, so that the steering radius is large, the flexibility is poor, the underwater robot is not suitable for steering and turning around in narrow channels or environments, the adaptability is poor, and the practicability is low when the underwater robot steers.

The invention relates to a mechanical steering structure of a micro underwater robot, which has the purpose and the effect achieved by the following specific technical means:

a mechanical steering structure of a micro underwater robot comprises a chassis module;

the chassis module comprises a middle supporting beam, a front steering plate, a rear steering plate and a connecting block, wherein the front steering plate is fixedly connected to the front end of the beam body of the middle supporting beam, the rear steering plate is fixedly connected to the rear end of the beam body of the middle supporting beam, the connecting block is fixedly connected to the middle parts of the top plate bodies of the front steering plate and the rear steering plate, and the top of the connecting block is fixedly connected with the underwater robot main body;

and driving wheel modules are arranged on two sides of the interior of the front steering plate and the interior of the rear steering plate.

Further, the driving wheel module comprises:

the supporting steering column is provided with a T-shaped section, and the top and the bottom of the supporting steering column are rotatably connected inside the plate body of the front steering plate;

the driving motor is fixed inside the upright post supporting the steering column;

the moving wheel is rotatably connected inside the transverse column supporting the steering column and is arranged outside the rotating shaft of the driving motor.

Furthermore, a front wheel steering module is installed at the top of the driving wheel module in the front steering plate, and a rear wheel follow-up module is installed at the top of the driving wheel module in the rear steering plate.

Further, the front wheel steering module comprises:

one end of the linkage steering rod is fixedly connected with the top of the steering column body supported in the front steering plate;

the two ends of the rod body of the linkage driving rod are respectively and rotatably connected with the outer ends of the rod bodies of the linkage steering rods at the two ends of the front steering plate;

the steering control block is rotatably connected inside the middle supporting beam, and the bottom of a block body of the steering control block is fixedly connected with a linkage gear;

the steering motor is fixed on the side face of the beam body of the middle supporting beam, a driving gear is fixedly connected to the top of a rotating shaft of the steering motor, and the driving gear is in meshed transmission connection with the gear teeth of the linkage gear.

Furthermore, a steering linkage column is arranged at the top of the middle rod body of the linkage driving rod, a strip-shaped steering control groove is formed in the block body of the steering control block, and the steering linkage column is inserted in the steering control groove.

Further, the rear wheel follow-up module comprises:

the positioning sleeve block is fixedly connected with the top of the steering column body supported in the rear steering plate;

the telescopic linkage rod is inserted into the block body of the positioning sleeve block;

the adjusting motor is fixed on the top of the block body of the positioning sleeve block;

one end of the rod body of the adjusting rod is fixedly connected with one end of a rotating shaft of the adjusting motor;

the two ends of the rod body of the follow-up driving rod are respectively and rotatably connected with the outer ends of the telescopic linkage rod bodies at the two ends of the rear steering plate;

and the follow-up steering block is rotatably connected inside the beam body of the middle supporting beam.

Furthermore, the bottom of the block body of the follow-up steering block is fixedly connected with a follow-up gear, and gear teeth of the follow-up gear are meshed with gear teeth of the linkage gear for transmission.

Furthermore, the bottom of the rod body in the middle of the follow-up driving rod is provided with a follow-up control column, a follow-up control groove is formed in the block body of the follow-up steering block, the length of the groove body of the follow-up control groove is larger than that of the groove body of the steering control groove, and one end of the groove body of the follow-up control groove is located at the circle center of the follow-up gear.

Furthermore, the outside of the rod body of adjusting the pole is equipped with the screw thread, and the body of rod tip of follow-up actuating lever is equipped with the regulation screw hole, adjusts the pole and connects at the inside of adjusting the screw hole through body of rod screw thread.

Furthermore, the cross-sectional shape of the rod body of the telescopic linkage rod is square, a positioning groove is formed in the block body of the positioning sleeve block, and the telescopic linkage rod is inserted into the positioning groove.

Compared with the prior art, the invention has the following beneficial effects:

1. the device is in the use, when underwater robot turned to through the chassis module, the inside drive wheel module of preceding deflector can turn to the driving wheel under the drive of front wheel steering module soon, and the inside drive wheel module of back deflector can follow the front wheel steering module under the synchronization of rear wheel follow-up module and turn to, and the range of turning to of front wheel steering module is followed to the rear wheel follow-up module can freely be adjusted, make the device can adapt to and turn under different environment, the operation of turning round, and is convenient and flexible, and the degree of freedom is high, the practicality and the flexibility of the device have been improved.

2. The driving wheel module in the front steering plate can rotate to drive the driving wheel to steer under the driving of the front steering wheel module, when the steering motor rotates, the driving gear drives the linkage gear to rotate and the steering control block to synchronously rotate, the steering control groove of the steering control block can drive the linkage driving rod to swing left and right through the steering linkage column, so that the linkage steering rod drives the support steering column in the front steering plate to rotate, the operation of steering the front wheel is realized, the driving wheel module in the rear steering plate can follow the front wheel steering module to steer under the synchronous action of the rear wheel follow-up module, the linkage gear can drive the follow-up gear to synchronously rotate in different directions when rotating, so that the follow-up steering block can synchronously rotate in different directions with the steering control block, the follow-up driving rod is driven to transversely swing, and the follow-up driving rod drives the support steering column in the rear steering plate to rotate through the telescopic linkage rod, the operation of the follow-up steering of the rear wheels is realized, so that the degree of freedom of the device is higher and more flexible, and the flexibility and the adaptability of the device are improved.

3. The steering range that rear wheel follow-up module follows front wheel steering module can freely be adjusted, when adjusting motor rotates, can drive the regulation pole in step and rotate, adjust pole body of rod screw and drive the follow-up actuating lever back-and-forth movement through adjusting the screw hole, thereby change the swing range that follow-up control groove passes through follow-up control post drive follow-up actuating lever, thereby realize adjusting the steering range that the inside drive wheel module of steering panel follows the inside drive wheel module of front steering panel behind the steering panel, freedom is nimble, make the device can adapt to the use under the different environment and travel, the flexibility and the adaptability of the device have been improved.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic structural view of the present invention adjusted to a state where the driving wheel module in the rear steering plate is not used to follow the steering of the driving wheel module in the front driving plate.

Fig. 3 is a schematic structural view of the present invention adjusted to the state that the driving wheel module in the rear steering plate is used along with the steering of the driving wheel module in the front driving plate.

Fig. 4 is a schematic structural view of a chassis module of the present invention.

Fig. 5 is a schematic structural view of a front wheel steering module of the present invention.

Fig. 6 is a schematic structural view of the disassembled rear wheel follower module of the present invention.

Fig. 7 is a schematic structural view of the bottom of the rear wheel follower module of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a chassis module; 101. a middle support beam; 102. a front steering plate; 103. a rear steering plate; 104. connecting blocks; 2. a drive wheel module; 201. supporting a steering column; 202. a drive motor; 203. a moving wheel; 3. a front wheel steering module; 301. a linkage steering rod; 302. a linkage driving rod; 3021. a steering linkage column; 303. a steering control block; 3031. a linkage gear; 3032. a steering control slot; 304. a steering motor; 4. a rear wheel follow-up module; 401. positioning the sleeve block; 4011. positioning a groove; 402. a telescopic linkage rod; 403. adjusting the motor; 404. adjusting a rod; 405. a follower drive rod; 4051. a servo control column; 4052. adjusting the threaded hole; 406. a follow-up steering block; 4061. a follower gear; 4062. follow-up control groove.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 7:

the invention provides a mechanical steering structure of a miniature underwater robot, which comprises a chassis module 1;

the chassis module 1 comprises a middle supporting beam 101, a front steering plate 102, a rear steering plate 103 and a connecting block 104, wherein the front steering plate 102 is fixedly connected to the front end of the beam body of the middle supporting beam 101, the rear steering plate 103 is fixedly connected to the rear end of the beam body of the middle supporting beam 101, the connecting block 104 is fixedly connected to the middle parts of the top plate bodies of the front steering plate 102 and the rear steering plate 103, and the top of the connecting block 104 is fixedly connected with the underwater robot main body;

the two sides of the interior of the front steering plate 102 and the rear steering plate 103 are respectively provided with a driving wheel module 2, the top of the driving wheel module 2 in the front steering plate 102 is provided with a front wheel steering module 3, and the top of the driving wheel module 2 in the rear steering plate 103 is provided with a rear wheel follow-up module 4;

the driving wheel module 2 includes:

the supporting steering column 201, the section of the column body supporting the steering column 201 is in a T shape, and the top and the bottom of the supporting steering column 201 are rotatably connected inside the plate body of the front steering plate 102;

the driving motor 202, the driving motor 202 is fixed inside the pillar supporting the steering column 201;

a moving wheel 203, wherein the moving wheel 203 is rotatably connected inside the transverse column supporting the steering column 201, and the moving wheel 203 is installed outside the rotating shaft of the driving motor 202;

the front wheel steering module 3 includes:

one end of the linkage steering rod 301 is fixedly connected to the top of a column body supporting the steering column 201 in the front steering plate 102;

two ends of a rod body of the linkage driving rod 302 are respectively and rotatably connected with the outer ends of the rod bodies of the linkage steering rods 301 at two ends of the front steering plate 102;

the steering control block 303 is rotatably connected inside the middle support beam 101, and the bottom of a block body of the steering control block 303 is fixedly connected with a linkage gear 3031;

the steering motor 304 is fixed on the side face of the beam body of the middle support beam 101, the top of a rotating shaft of the steering motor 304 is fixedly connected with a driving gear, and the driving gear is in meshing transmission connection with gear teeth of the linkage gear 3031;

the rear wheel follow-up module 4 comprises:

the positioning sleeve block 401 is fixedly connected to the top of the column body supporting the steering column 201 in the rear steering plate 103;

the telescopic linkage rod 402 is inserted into the block body of the positioning sleeve block 401, the cross section of the rod body of the telescopic linkage rod 402 is in a square design, a positioning groove 4011 is formed in the block body of the positioning sleeve block 401, the telescopic linkage rod 402 is inserted into the positioning groove 4011, and in use, the positioning groove 4011 can limit the telescopic use track of the telescopic linkage rod 402, so that the telescopic linkage rod 402 cannot be inclined or twisted to cause the failure of the device during use and adjustment;

the adjusting motor 403 is fixed at the top of the block body of the positioning sleeve block 401, and the adjusting motor 403, the steering motor 304 and the driving motor 202 are all electrically connected with a control module of the underwater robot, and the specific structure and the working principle of the underwater robot are the existing mature technology and are not described herein;

one end of the rod body of the adjusting rod 404 is fixedly connected with one end of the rotating shaft of the adjusting motor 403;

two ends of a rod body of the follow-up driving rod 405 are respectively and rotatably connected with the outer end of a telescopic linkage rod 402 at two ends of the rear steering plate 103;

the follow-up steering block 406 is rotatably connected inside the beam body of the middle support beam 101;

in use, when the underwater robot turns to through the chassis module 1, the internal driving wheel module 2 of the front steering plate 102 can turn to the driving wheel 203 under the driving of the front steering module 3, and the internal driving wheel module 2 of the rear steering plate 103 can turn to along with the front steering module 3 under the synchronous action of the rear wheel follow-up module 4, and the steering amplitude of the rear wheel follow-up module 4 along with the front steering module 3 can be freely adjusted, so that the device can adapt to turning under different environments and turn around, and is convenient and flexible, and the degree of freedom is high.

The top of the middle rod body of the linkage driving rod 302 is provided with a steering linkage column 3021, a strip-shaped steering control groove 3032 is arranged inside a block body of the steering control block 303, the steering linkage column 3021 is inserted inside the steering control groove 3032, in use, the driving wheel module 2 inside the front steering plate 102 can rotate the steering wheel 203 under the driving of the front wheel steering module 3, when the steering motor 304 rotates, the driving gear drives the linkage gear 3031 to rotate and simultaneously the steering control block 303 to synchronously rotate, and the steering control groove 3032 of the steering control block 303 can drive the linkage driving rod 302 to swing left and right through the steering linkage column 3021, so that the linkage steering rod 301 drives the supporting steering column 201 inside the front steering plate 102 to rotate, and the operation of front wheel steering is realized.

Wherein, the bottom of the block body of the follow-up steering block 406 is fixedly connected with a follow-up gear 4061, the gear teeth of the follow-up gear 4061 are engaged with the gear teeth of the linkage gear 3031 for transmission, the bottom of the rod body in the middle of the follow-up driving rod 405 is provided with a follow-up control post 4051, the block body of the follow-up steering block 406 is internally provided with a follow-up control groove 4062, the length of the groove body of the follow-up control groove 4062 is larger than that of the steering control groove 3032, and one end of the groove body of the follow-up control groove 4062 is positioned at the circle center position of the follow-up gear 4061, in use, the driving wheel module 2 in the rear steering plate 103 can follow the front wheel steering module 3 for steering under the synchronous action of the rear wheel follow-up module 4, the linkage gear 3031 can drive the follow-up gear 4061 to synchronously rotate in different directions when rotating, so that the follow-up steering block 406 can synchronously rotate in different directions with the steering control block 303, thereby driving the follow-up driving rod 405 to transversely swing, the follow-up driving rod 405 drives the inner support steering column 201 of the rear steering plate 103 to rotate through the telescopic linkage rod 402, the follow-up steering operation of the rear wheels is realized, so that the device has higher and more flexible use freedom.

Wherein, the outside of the body of rod of regulation pole 404 is equipped with the screw thread, and the body of rod tip of follow-up actuating lever 405 is equipped with adjusts screw hole 4052, adjust pole 404 and twist through the body of rod screw thread and connect in the inside of adjusting screw hole 4052, in use, the range of turning to of front wheel steering module 3 is followed to rear wheel follow-up module 4 can freely be adjusted, when adjusting motor 403 and rotating, can drive regulation pole 404 and rotate in step, adjust pole 404 body of rod screw thread and drive follow-up actuating lever 405 back-and-forth movement through adjusting screw hole 4052, thereby change follow-up control groove 4062 and drive the range of swing of follow-up actuating lever 405 through follow-up control post 4051, thereby realize adjusting the range of turning to of driving wheel module 2 inside the steering panel 103 inside driving wheel module 2 of follow-up steering panel 102, it is free and flexible, make the device can adapt to use under the different environment and go.

The specific use mode and function of the embodiment are as follows:

in the invention, the underwater robot can be put into the water bottom for use after being arranged at the top of the connecting block 104, the working state of the underwater robot and the moving state of the device can be remotely controlled by a remote control device, four driving wheel modules 2 are controlled by independent driving motors 202, the power is strong, the trafficability of the underwater robot under the water bottom is high, when the operations such as steering, turning around and the like are needed, the driving wheel modules 2 in the front steering plate 102 can steer the rotating driving wheels 203 under the driving of the front wheel steering module 3, when the steering motors 304 rotate, the driving gears drive the linkage gears 3031 to rotate and the steering control blocks 303 to synchronously rotate, the steering control grooves 3032 of the steering control blocks 303 can drive the linkage driving rods 302 to swing left and right through the steering linkage driving rods 3021, so that the linkage steering rods 301 drive the support steering columns 201 in the front steering plate 102 to rotate, thereby realizing the operation of steering of the front wheels, the driving wheel module 2 in the rear steering plate 103 can follow the front wheel steering module 3 to steer under the synchronous action of the rear wheel follow-up module 4, the linkage gear 3031 can drive the follow-up gear 4061 to synchronously rotate in different directions when rotating, so that the follow-up steering block 406 can synchronously rotate in different directions with the steering control block 303, thereby driving the follow-up driving rod 405 to transversely swing, the follow-up driving rod 405 drives the inner supporting steering column 201 of the rear steering plate 103 to rotate through the telescopic linkage rod 402, the operation of the rear wheel follow-up steering is realized, the steering amplitude of the rear wheel follow-up module 4 following the front wheel steering module 3 can be freely adjusted, when the adjusting motor 403 rotates, the adjusting rod 404 can be synchronously driven to rotate, the rod body thread of the adjusting rod 404 drives the follow-up driving rod 405 to move back and forth through the adjusting threaded hole 4052, thereby changing the swinging amplitude of the follow-up control groove 4062 driving the follow-up driving rod 405 through the follow-up control column 4051, thereby realize adjusting the steering range that the inside drive wheel module 2 of steering plate 103 follows the inside drive wheel module 2 of preceding steering plate 102 after, it is free nimble, when underwater robot turned to through chassis module 1, the inside drive wheel module 2 of preceding steering plate 102 can rotate under the drive of front wheel steering module 3 and turn to driving wheel 203, and the inside drive wheel module 2 of rear steering plate 103 can follow front wheel steering module 3 and turn to under the synchronization of rear wheel follow-up module 4, and the steering range that rear wheel follow-up module 4 follows front wheel steering module 3 can be adjusted freely, make the device can adapt to and turn under different environment, the operation of turning round, it is convenient nimble, the degree of freedom is high.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.