CN111650990A

CN111650990A - Gear adjusting knob and automatic walking equipment

Info

Publication number: CN111650990A
Application number: CN202010547303.0A
Authority: CN
Inventors: 薛玉雷; 周国扬; 刘楷; 汪洋
Original assignee: Nanjing Sumec Intelligent Technology Co Ltd
Current assignee: Nanjing Sumec Intelligent Technology Co Ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2020-09-11

Abstract

A gear adjusting knob and automatic walking equipment comprise a knob, wherein a knob main body is directly arranged on the outer side of a shell of the automatic walking equipment so as to be directly operated by a user; the lower side of the knob is fixedly connected with a connecting structure, and the lower side of the connecting structure is fixedly connected with the adjusting component. The invention can keep the knob main body in a state of abutting against the outer side surface of the shell under the pressure action of the elastic connecting piece through the elastic connecting piece which is arranged in the knob main body and abuts against the top end of the connecting structure. Meanwhile, the invention can also keep the knob to be connected with the adjusting component into a whole through the connection structure by matching the connection structure with the positioning cavity on the bottom of the knob, so that the knob and the adjusting component can be independent from the shell of the automatic walking equipment, and the response and detection of the shell to collision are not influenced.

Description

Gear adjusting knob and automatic walking equipment

Technical Field

The invention relates to the field of garden tools, in particular to a gear adjusting knob and automatic walking equipment.

Background

The automatic walking equipment such as the mowing robot and the like is provided with a gear adjusting knob for adjusting the height of a cutter head of the mowing robot or a corresponding operation tool. The housing of the self-propelled device is typically movably connected to the internal body by a connecting structure. Therefore, in the running process of the automatic walking equipment, after the shell collides with an object or is lifted, the shell and the internal machine body can generate relative displacement, the machine can detect the displacement relative to the internal machine body through the sensor arranged on the inner side of the shell, and accordingly the direction of the automatic walking equipment colliding with the object or the state of the automatic walking equipment lifted is judged, and the automatic walking equipment is driven to execute avoiding action.

The gear adjusting knob of the existing automatic walking equipment is usually arranged on an inner machine body and is positioned in a shell. In order to match the internal knob structure, a cover body for opening is usually further required to be arranged on the shell of the automatic walking device at a position corresponding to the knob. The user must be after opening the lid, just can operate the gear adjustment knob on the inside fuselage of equipment. Because need set up the lid, current knob structure can lead to the automatic walking equipment shell structure complicated, and the person of not being convenient for adjusts the working tool of automatic walking equipment.

Disclosure of Invention

In order to solve the defects in the prior art, the invention aims to provide a gear adjusting knob and automatic walking equipment. This application can conveniently adjust the adjusting part gear in the fuselage shell outside that automatic walking equipment was equipped with the knob body through being connected knob and adjusting part, does not influence the relative fuselage of shell and knob removal simultaneously.

In order to achieve the above object, the present invention provides a shift knob device, comprising: the knob comprises a knob body arranged on the outer side of the shell of the automatic walking equipment; the lower end of the connecting structure is fixedly connected with an adjusting component on the inner side of the shell of the automatic walking equipment, and the upper end of the connecting structure is connected with a knob; the knob can move up and down along the connecting structure and keeps consistent with the movement of the shell in the up-down direction; the knob and the connecting structure move in the front-back direction in a consistent manner and are kept independent of the movement of the shell in the front-back direction.

Optionally, the gear adjusting device according to any one of the above aspects, wherein the knob further includes: the upper part of the knob connecting piece is connected with the knob body, and the knob connecting piece is sleeved on the connecting structure and rotates synchronously with the connecting structure.

Optionally, the gear adjusting device according to any one of the above claims, wherein the knob connector includes: the inner cavity is arranged at the upper part of the knob connecting piece and is used for accommodating the upper end of the connecting structure; and the upper positioning cavity is arranged at the outer side of the bottom of the inner cavity and is arranged in the shell.

Optionally, the gear adjusting device further includes an elastic connecting member, an upper end of the elastic connecting member is connected to an upper end of the connecting structure, and a lower end of the elastic connecting member is connected to the knob connecting member.

Optionally, the gear adjusting device as described in any of the above, wherein the elastic connecting member is disposed between the upper end of the connecting structure and the bottom surface of the cavity of the inner cavity; the knob body is abutted against the outer side face of the shell under the pressure action of the elastic connecting piece.

Optionally, the gear adjusting device as described above, wherein a through hole is provided on the housing of the automatic walking device, the lower end portion of the knob is disposed in the through hole, and a gap is provided between the through hole and the knob.

Optionally, the gear adjusting device according to any one of the above descriptions, wherein the upper portion of the connecting structure is installed in an inner cavity, and the inner cavity is movable up and down along the upper portion of the connecting structure.

Optionally, the gear adjusting device may further include a second positioning cavity, wherein the second positioning cavity is located in the second positioning cavity, and the second positioning cavity is located in the second positioning cavity.

Optionally, the gear adjusting device according to any one of the above, wherein the connecting structure includes: the bottom end of the connecting seat is fixedly connected with the top of the adjusting assembly, and the top end of the connecting seat is installed in the upper positioning cavity; the mandrel is fixedly connected with the top end of the connecting seat and is arranged in the inner cavity of the knob; the elastic connecting piece is abutted between the top of the mandrel and the inner bottom end of the inner cavity.

Optionally, the gear adjusting device is as described in any one of the above, wherein the connecting seat is of a prism structure, or a guide structure is arranged on an outer side surface of the connecting seat, and a cross-sectional area of the connecting seat is larger than a cross-sectional area of the mandrel; the inner wall of the upper positioning cavity is attached to the outer side face of the connecting seat, the upper positioning cavity can move up and down along the connecting seat, and the connecting seat can rotate synchronously along with the upper positioning cavity.

Optionally, in the gear adjusting device according to any of the above embodiments, the guide structure protrudes from the outer side surface of the connecting seat, and is attached to the inner wall of the upper positioning cavity to limit the connecting seat from rotating relative to the upper positioning cavity.

Optionally, the gear adjusting device according to any one of the above, wherein the connecting structure includes: the bottom end of the lower screw is fixedly connected with the top of the adjusting component, and the top end of the lower screw is arranged on the outer side of the top of the adjusting component; the bottom end of the connecting block is fixedly connected with the top end of the lower screw, and the top end of the connecting block is arranged in the upper positioning cavity; the bottom end of the upper screw is fixedly connected with the top end of the connecting block, and the top end of the upper screw is arranged in the inner cavity of the knob; the elastic connecting piece is abutted between the top of the upper screw and the inner bottom end of the inner cavity.

Optionally, the gear adjusting device as described above, wherein a lower positioning hole is further disposed at the top of the adjusting assembly, and the bottom end of the connecting block is mounted in the lower positioning hole; the connecting block is of a prism structure, and the cross section area of the connecting block is larger than that of the upper screw; the inner wall of the upper positioning cavity is attached to the outer side face of the connecting block, the upper positioning cavity can move up and down along the connecting block, and the connecting block can rotate synchronously with the upper positioning cavity.

Optionally, the gear adjusting device according to any one of the above, wherein the adjusting assembly includes: the adjusting cylinder is arranged at the bottom of the adjusting assembly; the adjusting cover is arranged at the top of the adjusting cylinder; the bottom of the connecting structure is fixedly connected with the top of the adjusting cover.

Meanwhile, the invention also provides automatic walking equipment which is provided with the gear adjusting device.

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

1. according to the invention, the knob main body at the top of the knob is directly arranged on the outer side of the shell of the automatic walking equipment, so that the direct operation of a user is facilitated, and the height of an operation part of the automatic walking equipment from the ground is conveniently adjusted. Meanwhile, the mode of directly arranging the knob outside the machine shell can simplify the structure of the shell.

2. According to the knob structure provided by the invention, the lower side of the knob structure is fixedly connected with the connecting structure, and the lower side of the connecting structure is fixedly connected with the adjusting component, so that the knob structure can keep the knob main body in a state of abutting and being close to the outer side surface of the shell under the pressure action of the elastic connecting piece which is arranged in the knob main body and abuts against the top end of the connecting structure. Meanwhile, the connecting structure can be matched with an upper positioning cavity arranged at the bottom of the knob, and the knob can be kept to be connected with the adjusting assembly into a whole through the connecting structure, so that the knob and the adjusting assembly can be independent of a shell of the automatic walking equipment to form a set of independent control transmission system. Therefore, although the knob is arranged outside the shell, the knob is not required to be connected and fixed through the shell, but is directly connected with the adjusting component into a whole through an internal structure. Thus, the knob of the present invention, which does not affect the response and detection of a collision by the housing, can move independently of the housing.

3. Further, under the pressure effect of elastic connecting piece, the knob main part is pushed down by elastic connecting piece and is kept in the state of butt, pressing close to the shell lateral surface. When the shell of the automatic walking equipment is lifted, the knob main body is lifted along with the shell and keeps in contact with the shell, and the elastic connecting piece can provide certain deformation, so that the shell can drive the knob body to move upwards together.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is an exploded view of the structure of example 1;

FIG. 2 is a schematic view of the adjustment assembly;

FIG. 3 is a schematic view of a knob construction;

FIG. 4 is a sectional view showing the connected state of embodiment 1;

FIG. 5 is an exploded view of the structure of example 2;

FIG. 6 is a sectional view showing the connected state of embodiment 2.

In the drawings, 1 is an adjustment assembly; 1a is an adjusting cylinder; 1b is an adjusting cover; 2 is a knob; 3 is a connecting block; 4 is an upper screw; 5 is a lower screw; 6 is a spring; 7 is a gasket; 8 is a top cover; 9 is a housing; 10 is a fuselage; 11 is a connecting seat; 12 is a mandrel; 13 is a clamp; 101 is a lower locating hole; 201 is an inner cavity; 202 is an upper positioning chamber.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

The meaning of the 'inside and outside' in the invention means that the direction from the knob body to the adjusting component in the machine body is inside, and vice versa, relative to the gear adjusting knob device itself; and not as a specific limitation on the mechanism of the device of the present invention.

The term "connected" as used herein may mean either a direct connection between the components or an indirect connection between the components via other components.

The term "top end" or "bottom end" as used herein means that the direction from the adjustment member toward the end of the knob body outside the housing when the user is facing the automatic walking device is the direction of the top end, and vice versa, and is not intended to limit the mechanism of the device of the present invention.

The meaning of "up and down" in the present invention means that the direction in which the end of the body is turned by the adjusting member toward the outside of the housing when the user faces the automatic walking device is up, or down, otherwise, not specifically limited to the mechanism of the device of the present invention

The invention provides a gear adjusting knob device for automatic walking equipment such as a mowing robot and the like, which comprises:

the knob 2 comprises a knob body arranged on the outer side of the automatic walking equipment shell 9;

the lower end of the connecting structure is fixedly connected with an adjusting component 1 of the automatic walking equipment, and the upper end of the connecting structure is connected with a knob 2;

the elastic connecting piece is arranged between the upper end of the connecting structure and the knob 2;

the knob body is abutted against the outer side surface of the shell 9 under the pressure action of the elastic connecting piece.

According to the automatic walking equipment, only one hole for connecting the lower bottom of the knob to the adjusting component 1 on the inner side of the shell is needed to be arranged on the shell. The knob and the shell of the automatic walking equipment are not provided with a fixed connecting structure which is directly connected. According to the gear adjusting knob device, the knob is connected with the adjusting assembly 1 through the connecting structure, so that the knob body 2 can be arranged above the shell through the internal connecting structure or the matching between the connecting structure and the elastic connecting piece instead of being directly and fixedly connected with the shell. Therefore, the gear adjusting knob device is relatively independent from the shell of the automatic walking equipment, the gear adjusting knob device and the shell of the automatic walking equipment can move relatively without mutual influence, and a cover plate is not required to be arranged on the shell, so that a user can conveniently operate the knob, and the structure of the shell is simplified.

Wherein, the knob 2 can be specifically set to include:

the knob body is positioned on the outer side of the automatic walking equipment shell 9 and is used for being operated by a user to rotate the knob;

the upper part of the knob connecting piece is connected with the knob body, and the knob connecting piece is sleeved on the connecting structure and rotates synchronously with the connecting structure.

The lower end of the connecting structure is fixedly connected with the adjusting component 1 on the inner side of the automatic walking equipment shell 9, and the upper end of the connecting structure is connected with the knob body arranged on the outer side of the automatic walking equipment shell 9, so that the knob 2 can move up and down along the connecting structure, and the knob 2 and the shell 9 can be guaranteed to keep consistent in movement in the up-down direction. At the same time, the connecting structure can enable the knob 2 and the connecting structure to move in the front-back direction in a consistent manner and keep independent of the movement of the shell 9 in the front-back direction. That is, in the present invention, the connection structure connects the knob and the adjusting assembly 1 in such a manner that the knob can be maintained at the same position as the adjusting assembly 1 by the connection structure when the housing is collided and moved forward and backward with respect to the body and the adjusting assembly 1. The knob provided by the invention is not driven by the shell in the moving direction of front, back, left and right, but is kept consistent with the machine body and the adjusting component 1 in the machine body by the connecting function of the connecting structure.

The knob connector in the knob may be configured to include:

an inner cavity 201 disposed at an upper portion of the knob connector for receiving an upper end of the connection structure;

an upper positioning cavity 202 arranged at the bottom outside of the inner cavity 201, wherein the upper positioning cavity 202 is arranged in the shell 9.

The connecting structure is arranged in the upper positioning cavity 202, can be fixed relative to the upper positioning cavity and the knob body through matching with the inner wall of the upper positioning cavity 202, and drives the adjusting component 1 fixedly connected with the lower part of the connecting structure to synchronously rotate along with the knob body, so that the height of a cutter head of the automatic walking equipment or a corresponding operation tool relative to the bottom of the machine body is driven to be adjusted through the rotation of the adjusting component 1, the operation position is adjusted, and the operation effect is ensured.

In a first implementation manner, the gear adjusting knob device of the present invention, the connection structure therebetween, can be arranged in the manner as shown in fig. 1 and 4. The connection structure under this implementation may be configured to include:

the bottom end of the lower screw 5 is fixedly connected with the top of the adjusting component 1, and the top end of the lower screw is arranged on the outer side of the top of the adjusting component 1;

the bottom end of the connecting block 3 is fixedly connected with the top end of the lower screw 5, and the top end of the connecting block is arranged in the upper positioning cavity 202;

and the bottom end of the upper screw 4 is fixedly connected with the top end of the connecting block 3, and the top end of the upper screw is installed in the inner cavity 201 of the knob 2.

The upper and lower ends of the connecting block 3 are respectively embedded into the upper positioning cavity 202 at the bottom end of the knob shown in fig. 3 and the lower positioning hole 101 at the top of the adjusting assembly 1 in fig. 2. The lower positioning hole 101 surrounds the bottom end of the connecting block 3. Wherein, the adjusting component 1 is fixedly connected with the connecting block 3 through a lower screw 5, and the upper part of the connecting block 3 is in threaded connection with the upper screw 4. The top end of the upper screw 4 passes through the upper positioning cavity 202 and extends into the inner cavity 201 of the knob.

The elastic connecting piece can be set to be of a spring structure, the upper end and the lower end of the elastic connecting piece are respectively abutted between the top of the upper screw 4 and the bottom end of the inner portion of the inner cavity 201, the pressing effect on the knob is achieved, and the movement of the outer shell is not influenced when the knob is guaranteed to be close to the outer shell.

Specifically, the top of the upper screw 4 can be provided with a gasket 7 between the end of the spring 6, and the spring 6 is sleeved on the periphery of the upper screw 4 and is arranged between the gasket 7 and the bottom end of the inner cavity 201 of the knob 2. Therefore, the inner cavity 201 can press the knob body 2 under the action of the spring 6, so that the lower end of the knob body 2 is tightly attached to the outer surface of the shell 9. Therefore, the connecting structure between the knob and the adjusting component on the machine body can maintain the fact that the knob is pressed downwards through the spring in the vertical direction to be close to the outer surface of the shell, and meanwhile, the connecting mode of the knob does not influence the movement of the shell body.

In order to facilitate the operation of a user, the knob can be arranged above the shell of the automatic walking equipment. The inner cavity 201 at the top of the knob body can be provided with an opening above, so that screws can be conveniently installed. The opening may be sealed by a removable cover 8. In this technical scheme, accessible buckle is connected between top cap 8 and knob body or the interior cavity.

Under a preferable implementation mode, the connecting block 3 can also be provided with a polygonal structure. The connecting block 3 with the polygon prism structure is fixed with the upper and lower positioning holes through the edge angle. Specifically, the inner side wall of the lower positioning hole 101 and the inner side wall of the upper positioning cavity 202 are respectively provided with an edge attached to the outer surface of the connecting block 3. Therefore, the connecting block 3, the adjusting component 1 and the knob body 2 cannot generate circumferential relative displacement.

In other implementation manners, the connection structure in the middle of the gear position adjusting knob device can be set as the manner shown in fig. 5 and 6, and the connection block 3 and the adjusting assembly 1 in the embodiment 1 are designed integrally, so that the number of integral parts of the equipment is reduced, the equipment structure is simplified, and the assembly is convenient. Specifically, this kind of connection structure of integrated design, it includes:

the bottom end of the connecting seat 11 is fixedly connected with the top of the adjusting component 1, and the top end of the connecting seat is fixed in the upper positioning cavity 202;

the mandrel 12 is fixedly connected with the top end of the connecting seat 11 and is arranged in the inner cavity 201 of the knob 2;

the elastic connecting piece is abutted between the top of the mandrel 12 and the inner bottom end of the inner cavity 201.

The adjusting assembly 1 in this implementation mode can be provided as a split structure, and includes an adjusting cylinder 1a and an adjusting cover 1 b. The adjusting cylinder 1a can be arranged at the bottom of the adjusting assembly 1 and is used for being connected with the machine body 10, and the height of the adjusting cylinder relative to the bottom of the machine body can be adjusted by adjusting a cutter disc or a corresponding working tool; the adjusting cover 1b is detachably arranged on the top of the adjusting cylinder 1 a. The connecting structure and the top of the adjusting cover 1b are integrally formed, and the whole adjusting assembly can be driven to rotate by the rotation of the knob so as to adjust the height of the cutter head or the corresponding operation tool relative to the bottom of the machine body.

Specifically, the adjusting cover 1b in this implementation manner may be integrally formed with a connecting seat 11 above the adjusting cover, and the connecting seat 11 is integrally connected with a core shaft 12. The connecting base 11 may be preferably configured as a polygonal prism structure to facilitate fixing with the upper positioning cavity 202 at the bottom of the knob, and prevent the connecting structure from sliding inside the upper positioning cavity 202. The top end of the mandrel 12 may also be provided with a snap groove for securing a clamp 13. Lower locating piece department on the knob 2 cup joints on connecting seat 11, and dabber 12 is located the inside interior cavity 201 of knob body 2, has cup jointed spring 6 on the dabber 12, and it is spacing that clamp 13 is passed through on the spring 6 top.

The connecting seat 11 with the prism structure can be larger than the cross section area of the mandrel 12, so that the inner top surface of the upper positioning cavity 202 can be abutted to the top end face of the connecting seat 11, the inner side wall of the upper positioning cavity 202 can be attached to the outer side face of the connecting seat 11 through the inner corner, relative circumferential rotation does not exist between the knob and the connecting structure, and synchronous rotation among the knob, the connecting structure and the adjusting assembly is guaranteed.

In other implementation manners, the outer side surface of the connecting seat 11 or the connecting block 3 can also adopt guide structures such as a guide groove and a limiting block to realize synchronization with the upper positioning cavity 202. The guide structures such as the guide groove and the limiting block are attached to the inner wall of the upper positioning cavity 202 to limit the upper positioning cavity 202 to move up and down along the connecting seat 11 or the connecting block 3, and the connecting seat 11 or the connecting block 3 can only rotate synchronously with the upper positioning cavity 202 and cannot rotate relative to the upper positioning cavity 202.

In summary, the automatic traveling device in any of the above implementations can ensure that the housing 9 can freely displace relative to the body 10 without being affected by the knob after the housing 9 collides with an obstacle or the like during the operation of the automatic traveling device. Because the shell 9 and the knob 2 are not fixedly connected but only contacted with each other, the movement of the shell 9 does not drive the knob 2 to move, and the movement of the shell 9 is not hindered by the knob 2. In order to further ensure the moving range between the shell 9 and the knob 2, the lower end of the knob and the connecting structure arranged on the shell 9 of the automatic walking device pass through the through hole, and the inner periphery of the through hole can be arranged to have a proper gap with the knob.

When the automatic walking equipment is moved, the shell 9 may be lifted, at this time, the shell 9 moves upward relative to the machine body 10, and the bottom of the inner cavity 201 of the knob presses the shell 9 downward under the action of the spring 6, so that the knob body 2 is always in contact with and attached to the shell 9 in the lifting process of the shell 9, and the shell 9 moves upward and simultaneously drives the knob body 2 to move upward.

The invention has the advantages that: the rotary knob is arranged above the shell of automatic walking equipment such as a mowing robot and the like, and the rotary knob and the shell can move relatively without mutual influence in a movable connection mode through the connecting structure and the elastic connecting piece inside the rotary knob device. The shell is not required to be provided with a cover body and other complex structures, and a user can directly adjust the operation height through a knob exposed outside the shell.

Those of ordinary skill in the art will understand that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. 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.

Claims

1. A gear shift knob device, comprising:

the knob (2) comprises a knob body arranged on the outer side of the automatic walking equipment shell (9);

the lower end of the connecting structure is fixedly connected with an adjusting component (1) on the inner side of an automatic walking equipment shell (9), and the upper end of the connecting structure is connected with a knob (2);

the knob (2) can move up and down along the connecting structure and keeps consistent with the movement of the shell (9) in the up-down direction;

the knob (2) and the connecting structure move in the front-back direction in a consistent manner, and the movement of the knob and the connecting structure in the front-back direction is kept relatively independent of the movement of the shell (9) in the front-back direction.

2. Gear adjustment device according to claim 1, characterized in that the knob (2) further comprises: the upper part of the knob connecting piece is connected with the knob body, and the knob connecting piece is sleeved on the connecting structure and rotates synchronously with the connecting structure.

3. A range adjustment device as set forth in claim 2 wherein said knob link includes:

an inner cavity (201) arranged at the upper part of the knob connecting piece and used for accommodating the upper end of the connecting structure;

an upper positioning cavity (202) arranged outside the bottom of the inner cavity (201), the upper positioning cavity (202) being arranged inside the shell (9).

4. A range adjustment device as set forth in claim 2, further comprising a resilient connecting member, an upper end of said resilient connecting member being connected to an upper end of said coupling structure, and a lower end of said resilient connecting member being connected to said knob connector.

5. A gear adjustment device as defined in claim 3, characterised by an elastic connection element arranged between the upper end of said connection structure and the bottom surface of the cavity of said inner cavity (201); the knob body is abutted against the outer side face of the shell (9) under the pressure action of the elastic connecting piece.

6. Gear adjustment device according to claim 1, characterized in that the housing (9) of the automatic walking equipment is provided with a through hole, the lower end part of the knob (2) is arranged in the through hole, and a gap is provided between the through hole and the knob.

7. Gear adjustment device according to claim 3, characterised in that the upper part of the coupling structure is mounted in an inner cavity (201), the inner cavity (201) being movable up and down along the upper part of the coupling structure.

8. A gear adjustment device as set forth in claim 3, characterized in that the middle part of the attachment structure is mounted in an upper positioning chamber (202), said upper positioning chamber (202) being movable up and down along the middle part of the attachment structure, and the middle part of the attachment structure being driven in a rotational movement by the upper positioning chamber (202).

9. A range adjustment device as set forth in claims 1-5, wherein said coupling structure includes:

the bottom end of the connecting seat (11) is fixedly connected with the top of the adjusting assembly (1), and the top end of the connecting seat is installed in the upper positioning cavity (202);

the mandrel (12) is fixedly connected with the top end of the connecting seat (11) and is arranged in the inner cavity (201) of the knob (2);

the elastic connecting piece is abutted between the top of the mandrel (12) and the inner bottom end of the inner cavity (201).

10. A gear adjustment device according to claim 9, characterized in that the connecting base (11) is of a prismatic structure, or the outer side of the connecting base (11) is provided with a guide structure, the cross-sectional area of the connecting base (11) is larger than the cross-sectional area of the spindle (12);

the inner wall of the upper positioning cavity (202) is attached to the outer side face of the connecting seat (11), the upper positioning cavity (202) can move up and down along the connecting seat (11), and the connecting seat (11) can be driven by the upper positioning cavity (202) to rotate synchronously.

11. A range adjustment device as recited in claim 10, wherein said guide means projects from the outer side of said connecting base (11) and engages the inner wall of said upper positioning cavity (202) to restrict said connecting base (11) from rotating relative to said upper positioning cavity (202).

12. A range adjustment device as set forth in claims 1-5, wherein said coupling structure includes:

the bottom end of the lower screw (5) is fixedly connected with the top of the adjusting component (1), and the top end of the lower screw is arranged on the outer side of the top of the adjusting component (1);

the bottom end of the connecting block (3) is fixedly connected with the top end of the lower screw (5), and the top end of the connecting block is installed in the upper positioning cavity (202);

the bottom end of the upper screw (4) is fixedly connected with the top end of the connecting block (3), and the top end of the upper screw is installed in the inner cavity (201) of the knob (2);

the elastic connecting piece is abutted between the top of the upper screw (4) and the inner bottom end of the inner cavity (201).

13. A gear position adjusting device as defined in claim 12, characterized in that the top of the adjusting assembly (1) is further provided with a lower positioning hole (101), and the bottom end of the connecting block (3) is mounted in the lower positioning hole (101); the connecting block (3) is of a prism structure, and the cross section area of the connecting block is larger than that of the upper screw (4);

the inner wall of the upper positioning cavity (202) is attached to the outer side face of the connecting block (3), the upper positioning cavity (202) can move up and down along the connecting block (3), and the connecting block (3) can be driven by the upper positioning cavity (202) to rotate synchronously.

14. Gear adjustment device according to claim 1, characterized in that the adjustment assembly (1) comprises:

an adjusting cylinder (1 a) arranged at the bottom of the adjusting component (1);

an adjusting cover (1 b) arranged on the top of the adjusting cylinder (1 a);

the bottom of the connecting structure is fixedly connected with the top of the adjusting cover (1 b).

15. An automatic walking device, characterized in that the automatic walking device is provided with a gear adjusting device according to any one of claims 1-14.