LU503637B1

LU503637B1 - Municipal administration greenbelt maintenance and trimming device

Info

Publication number: LU503637B1
Application number: LU503637A
Authority: LU
Inventors: Yaoning Liu
Original assignee: Jiangsu Vocational Inst Architectural Tech
Priority date: 2023-02-01
Filing date: 2023-03-14
Publication date: 2023-09-14
Also published as: CN115968663B; CN115968663A

Abstract

The present application discloses a municipal administration greenbelt maintenance and trimming device, which comprises: a main part, wherein a walking mechanism is arranged on one side of the main part, a mechanical arm is arranged on the walking mechanism, a cutting knife is arranged on a lower surface of the main part, a connecting rod is arranged on a position, close to the walking mechanism, of an upper surface of the main part to form relative rotation with the main part, a cavity is arranged in a position, corresponding to the connecting rod, inside the main part, an upper end of the connecting rod is connected with the mechanical arm, a lower end of the connecting rod extends into the cavity, a lower side of a circumferential outer side surface of the connecting rod is in rotatable connection with the main part, and a rotation mechanism is arranged inside the cavity to drive the main part to rotate and cross over an obstacle. According to the present invention, through the arrangement of the telescopic piece and the compression piece, when the main part is in contact with the lamp post, the compression piece can drive the telescopic piece to enter into the extension-retraction cavity, such that the power mechanism drives the main part and the cutting knife to cross over the lamp post. Since there is no need for the walking mechanism to stop in the above process, the trimming efficiency of the greenbelt is further improved.

Description

Bi

MUNICIPAL ADMINISTRATION GREENBELT MAINTENANCE ANP’

TRIMMING DEVICE

TECHNICAL FIELD

The present application relates to the technical field of greenbelt trimming, and especially relates to a municipal administration greenbelt maintenance and trimming device.

BACKGROUND

In road engineering construction, a greenbelt is generally arranged at the center of the road surface so as to separate the roads and beautify the city. In addition, a trimming device is generally used to regularly trim the greenbelt nowadays so as to prevent the greenbelt from growing in a jumble, which in turn affects the overall aesthetics of the greenbelt.

Some existing greenbelt trimming devices mainly comprise a walking mechanism, a mechanical arm and a cutting device. When the greenbelt trimming device is used, blades in the cutting device are made to rotate at a high speed, then the mechanical arm moves the cutting device to the upper part of the greenbelt, and the blades are made to be in contact with the greenbelt, such that redundant branches and leaves of the greenbelt are cut off. Then, the walking mechanism is made to travel forwards, such that the cutting device 1s made to cut the greenbelt forwards, and the greenbelt trimming operation is further achieved through the above actions. However, in the above process, since lamp posts (or trees) are usually mounted at the middle of the greenbelt, if the cutting device is close to the lamp post in the process that the walking mechanism drives the cutting device to move forwards, the walking mechanism 1s required to stop and the mechanical arm is made to drive the cutting device to leave the greenbelt, then, the walking mechanism is made to move forwards and exceed the lamp post, and the cutting device is then made to be in contact with the greenbelt again, which will affect the trimming efficiency of the greenbelt.

SUMMARY

The present application provides a municipal administration greenbelt maintenance and trimming device having the advantages of automatic obstacle avoidance and 1

BL-5642 improved greenbelt trimming efficiency to solve the problem proposed in the aboÿ2S687 background section.

In order to achieve the above purpose, the present application adopts the following technical solution: Provided is a municipal administration greenbelt maintenance and trimming device, comprising: a main part, wherein a walking mechanism is arranged on one side of the main part, a mechanical arm is arranged on the walking mechanism, a cutting knife is arranged on a lower surface of the main part to cut a greenbelt, a connecting rod is arranged on a position, close to the walking mechanism, of an upper surface of the main part to form relative rotation with the main part, a cavity is arranged in a position, corresponding to the connecting rod, inside the main part, an upper end of the connecting rod is connected with the mechanical arm, a lower end of the connecting rod extends into the cavity, a lower side of a circumferential outer side surface of the connecting rod is in rotatable connection with the main part, and a rotation mechanism is arranged inside the cavity to drive the main part to rotate and cross over an obstacle.

Furthermore, the rotation mechanism comprises an extension-retraction cavity, a telescopic piece, a movable conductive block, first elastic pieces, an upper conductive block, a lead, a power mechanism, a lower conductive block and a compression piece, wherein a power supply is arranged on an upper side of the connecting rod, the extension-retraction cavity is arranged in an interior of a lower end head of the connecting rod, the telescopic piece is movably clamped in the extension-retraction cavity, the movable conductive block is arranged in the extension-retraction cavity and configured for forming synchronous movement with the telescopic piece, the first clastic pieces are arranged on both sides of the movable conductive block in the extension-retraction cavity and configured for connecting a side surface of the telescopic piece facing the walking mechanism and connecting an inner wall of the extension-retraction cavity, with the elasticity of the first elastic pieces being greater than the resistance against the cutting knife cutting the greenbelt, the upper conductive block is arranged on an upper side of the extension-retraction cavity in the 2

BL-5642 connecting rod, the lead is arranged on the upper side of the upper conductive biécf*687 in the connecting rod, the power mechanism is arranged at a lower part of the connecting rod in the cavity, an upper surface of the power mechanism is in fixed connection with a lower end surface of the connecting rod, a rotating shaft of the power mechanism is in fixed connection with a bottom surface of the cavity, the lower conductive block is arranged between the extension-retraction cavity and the power mechanism in the connecting rod, an outer side of the connecting rod is sleeved with the compression piece in the cavity, an outer side surface of the compression piece is connected with an inner wall of the cavity, an arc-shaped end of the telescopic piece is disposed in a space between two ends of the compression piece, one end, opposite to the running direction of the walking mechanism, of the compression piece is an arc-shaped end, when the telescopic piece is retracted into the extension-retraction cavity, the power supply passes through the lead, the upper conductive block, the movable conductive block and the lower conductive block, and then the power mechanism is driven to operate, with a rotating speed of the power mechanism being greater than an advancing speed of the walking mechanism.

Furthermore, the main part is of an arc-shaped structure, and the main part has a concave surface facing a direction opposite to the running direction of the walking mechanism.

Furthermore, a rotating ring is formed in the upper side of the circumferential outer side surface of the connecting rod, and balance rods are arranged between the circumferential surface of the rotating ring and the upper surface of the main part to achieve the stress balance of the connecting rod.

Furthermore, a liquid storage piece is arranged at a lower part of the compression piece in the cavity, the liquid storage piece is connected with the connecting rod, a suction piece is arranged in an inner chamber of the liquid storage piece, an arc-shaped end of an upper side of the suction piece is disposed in a space between the two ends of the compression piece, a lower surface of the compression piece is of a smooth transition from a bevel to a plane, there is a vertical distance between a 3

BL-5642 highest point of the lower surface of the compression piece and an upper end surf#C23637 of the suction piece, and a second elastic piece 1s arranged between the lower end surface of the suction piece and the bottom surface of the cavity of the liquid storage piece to achieve the upward reset of the suction piece.

Furthermore, a shifting plate is arranged on the concave surface of the main part and configured for shifting the greenbelt, and a distance from a lower surface of the shifting plate to the ground is smaller than a distance from the cutting knife to the ground.

Furthermore, a piston end of the suction piece is in sealed sliding connection with the inner wall of the liquid storage piece, an extension block is arranged on one side of the shifting plate on the concave surface of the main part, a rotating cavity is formed in both the extension block and the main part, a driving piece is arranged in the rotating cavity, a liquid guide pipe is arranged in all of the main part, the extension block and the liquid storage piece and configured for achieving a mutual flow of a medium in a cavity of the liquid storage part and a medium in the rotating cavity, a rotary connecting piece is arranged between the liquid guide pipe and the liquid storage piece and configured for achieving a communication between the liquid storage piece and the liquid guide pipe during relative rotation, a driven piece is mounted on a lower side of the driving piece in the rotating cavity in a sliding manner, one end of the driving piece facing the driven piece extends into an interior of the driven piece, a third elastic piece is arranged between one end of the driving piece facing the driven piece and the interior of the driven piece, and one end of the driven piece facing away from the driving piece is connected with the shifting plate.

Furthermore, the cavity of the liquid storage piece on the lower side of the suction piece is filled with a liquid medium.

According to the municipal administration greenbelt maintenance and trimming device of the present application, through the arrangement of the telescopic piece and the compression piece, when the main part is in contact with the lamp post, the compression piece can drive the telescopic piece to enter into the extension-retraction 4

BL-5642 cavity, such that the power mechanism drives the main part and the cutting knife*863687 cross over the lamp post. Since there is no need for the walking mechanism to stop in the above process, the trimming efficiency of the greenbelt is further improved.

Through the arrangement of the main part and the connecting rod, the cutting knife may cut the greenbelt on one side of the lamp post during the process of crossing over the lamp post, and then, when the main part is reset, the cutting knife that is far away from the connecting rod may cut the greenbelt on the other side of the lamp post. Through the above actions, the greenbelt around the lamp post is cut, thereby improving the overall trimming range of the greenbelt.

Through the arrangement of the shifting plate and the suction piece, when the walking mechanism drives the main part and the cutting knife to move forwards, the shifting plate may shift the cut greenbelt, and then the leaves left on the top of the greenbelt are made to fall to the greenbelt bottom. Through the above actions, the impact on the beauty of the greenbelt is reduced when the leaves are dried up, and then, when the main part crosses over the lamp post and is reset, the shifting plate will shift the greenbelt that is on the other side of the lamp post to the cutting knife.

Through the above actions, the overall trimming range of the greenbelt is further improved.

BRIEF DESCRIPTION OF THE DRAWING

The accompanying drawings, which constitute a part of the specification, illustrate the embodiments of the present disclosure and, together with the specification, are used to explain the principles of the present disclosure.

The present disclosure can be more clearly understood from the following detailed description with reference to the accompanying drawings, wherein,

FIG. 1 is a schematic diagram of an overall structure according to Embodiment I of the present invention;

FIG. 2 1s a schematic diagram of an internal structure of a main part according to

Embodiment I of the present invention;

FIG. 3 is a partial enlarged schematic diagram of a structure at A of FIG. 2 according 5

BL-5642 to the present invention; LU503637

FIG. 4 is a schematic diagram of an internal structure of a cavity according to

Embodiment I of the present invention;

FIG. 5 is a schematic diagram of an internal structure of a cavity according to

Embodiment II of the present invention;

FIG. 6 is a schematic diagram of a compression piece according to Embodiment II of the present invention;

FIG. 7 is a schematic diagram showing a connection state between a shifting plate and a driven piece according to Embodiment II of the present invention;

FIG. 8 is a schematic diagram showing the distribution of the shifting plates according to Embodiment II of the present invention; and

FIG. 9 is a schematic diagram of a prior art apparatus.

Reference numerals are as follows:

I is main part; 2 is cutting knife; 3 1s connecting rod; 4 is cavity; 5 is rotating ring; 6 1s balance rod; 7 is extension-retraction cavity; 8 is telescopic piece; 9 is movable conductive block; 10 is first elastic piece; 11 1s upper conductive block; 12 is lead; 13 is power mechanism; 14 is lower conductive block; 15 is compression piece; 16 is liquid storage piece; 17 is suction piece; 18 is second elastic piece; 19 is shifting plate; 20 is extension block; 21 is rotating cavity; 22 is driving piece; 23 is liquid guide pipe; 24 is driven piece; and 25 is third elastic piece.

DETAILED DESCRIPTION

The technical solution in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application but not all of them. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of the present application.

Embodiment 1 6

BL-5642

Referring to FIGs. 1, 3, 4 and 9, provided is a municipal administration greenthëlts6837 maintenance and trimming device, comprising a main part 1, wherein a walking mechanism (such as a vehicle, not shown) is arranged on one side of the main part 1, a mechanical arm (not shown) is arranged on the walking mechanism, cutting knives 2 are equidistantly arranged on a lower surface of the main part 1, power sources (such as motors) fitting the cutting knives 2 are arranged in the main part 1, a connecting rod 3 is arranged on a position, close to the walking mechanism, of an upper surface of the main part 1, a cavity 4 is arranged in a position, corresponding to the connecting rod 3, inside the main part 1, an upper end of the connecting rod 3 is connected with the mechanical arm, a power supply is arranged on an upper side of the connecting rod 3, a lower end of the connecting rod 3 extends into the cavity 4, a lower side of a circumferential outer side surface of the connecting rod 3 is in rotatable connection with the main part 1, an extension-retraction cavity 7 is arranged in an interior of a lower end head of the connecting rod 3, a telescopic piece 8 is slidably clamped in the extension-retraction cavity 7, an arc-shaped end of the telescopic piece 8 extends out of the extension-retraction cavity 7, a movable conductive block 9 is arranged in the extension-retraction cavity 7, the movable conductive block 9 is in fixed connection with a piston end of the telescopic piece 8, first elastic pieces 10 are arranged on both sides of the movable conductive block 9 in the extension-retraction cavity 7, one end of each first elastic piece 10 is connected with a side surface of the telescopic piece 8 facing the walking mechanism, and the other end of the first elastic piece 10 is connected with an inner wall of the extension-retraction cavity 7, with the elasticity of the first elastic piece 10 being greater than the resistance against the cutting knives 2 cutting the greenbelt; an upper conductive block 11 is fixedly mounted on an upper side of the extension-retraction cavity 7 in the connecting rod 3, a lead 12 is fixedly mounted on an upper side of the upper conductive block 11 in the connecting rod 3, a lower end of the lead 12 is electrically connected with the upper conductive block 11, an upper end of the lead 12 is electrically connected with the power supply, a power mechanism 13 (such as a 7

BL-5642 motor) is arranged at a lower part of the connecting rod 3 in the cavity 4, an uppèrsé87 surface of the power mechanism 13 1s in fixed connection with a lower end surface of the connecting rod 3, a rotating shaft of the power mechanism 13 is in fixed connection with a bottom surface of the cavity 4, a lower conductive block 14 is fixedly mounted between the extension-retraction cavity 7 and the power mechanism 13 in the connecting rod 3, a lower side surface of the lower conductive block 14 is electrically connected with an input end of the power mechanism 13, an outer side of the connecting rod 3 1s sleeved with a compression piece 15 in the cavity 4, an outer side surface of the compression piece 15 is welded and fixed with the inner wall of the cavity 4, an arc-shaped end of the telescopic piece 8 is disposed in a space between two ends of the compression piece 15, one end, opposite to the walking direction of the walking mechanism, of the compression piece 15 is an arc-shaped end, when the telescopic piece 8 is retracted into the extension-retraction cavity 7, the movable conductive block 9 is electrically connected with the upper conductive block 11 and the lower conductive block 14, with a rotating speed of the power mechanism 13 being greater than an advancing speed of the walking mechanism; during work, the mechanical arm is made to drive the main part 1 to move above the greenbelt and the cutting knives 2 are made to cut the greenbelt, then, the walking mechanism is made to drive the mechanical arm and the main part 1 to move forwards slowly, such that the cutting knives 2 cut the greenbelt forwards, then when the main part 1 moving forwards approaches and is in contact with the lamp post, the lamp post applies reverse resistance to the main part 1, and the resistance drives the main part 1 to rotate in a position facing away from the advancing direction of the walking mechanism, such that the compression piece 15 extrudes the telescopic piece 8, the telescopic piece 8 overcomes the elasticity of the first elastic pieces 10, and the movable conductive block 9 is driven to further go deep into the extension-retraction cavity 7. In the process, the movable conductive block 9 may be in contact with the upper conductive block 11 and the lower conductive block 14, such that the power supply transmits power to the power mechanism 13 through the lead 12, the upper 8

BL-5642 conductive block 11, the movable conductive block 9 and the lower conductive bhbtRS687 14, and the power mechanism 13 drives the main part 1 to rotate, and then, along with the continuous advance of the walking mechanism, the main part 1 crosses over the lamp post and is driven by the power mechanism 13 to be reset. Through the above actions, the trimming efficiency of the greenbelt is then improved, and meanwhile, in the process that the main part 1 rotates and crosses over the lamp post, the main part 1 drives the cutting knives 2 to cut the greenbelt around the lamp post close to one side of the walking mechanism, and through the above actions, the overall trimming range of the greenbelt is improved.

Referring to FIGs. 1 and 2, the main part 1 is of an arc-shaped structure, and the main part 1 has a concave surface facing a direction opposite to the walking direction of the walking mechanism. Through the arrangement of the structure, in the process of rotating and resetting the main part 1, one end of the main part 1 far away from the connecting rod 3 moves to the upper part of the greenbelt around the lamp post far away from one side of the walking mechanism, such that the cutting knife 2 at the position cuts the greenbelt on the other side of the lamp post. Through the above actions, the overall trimming range of the greenbelt is further improved.

Referring to FIG. 1, the upper side of the circumferential outer side surface of the connecting rod 3 is rotatably sleeved with a rotating ring 5, balance rods 6 are welded on both sides of the circumferential surface of the rotating ring 5, the other end of each balance rod 6 is welded and fixed with the upper surface of the main part 1.

Through the arrangement of the structure, a portion of the main part 1 on the two sides of the connecting rod 3 is prevented from exerting an asymmetric force on the connecting rod 3 due to its self gravity, which in turn makes the abrasion of the connecting rod 3 during rotation intensified.

Embodiment 2

Referring to FIGs. 1, 5 and 6, the present embodiment is a further improvement of

Embodiment I, and the improvement is that: a liquid storage piece 16 is arranged at a lower part of the compression piece 15 in the cavity 4, the inner side surface of the 9

BL-5642 liquid storage piece 16 is welded and fixed with the outer side surface of! H?83637 connecting rod 3, a suction piece 17 is slidably clamped in an inner chamber of the liquid storage piece 16, an arc-shaped end of an upper side of the suction piece 17 extends out of the liquid storage piece 16 and is disposed in a space between the two ends of the compression piece 15, a lower surface of the compression piece 15 is of a smooth transition from a bevel to a plane, there is a vertical distance between a highest point of the lower surface of the compression piece 15 and an upper end surface of the suction piece 17, and a second elastic piece 18 is arranged between the lower end surface of the suction piece 17 and the bottom surface of the cavity of the liquid storage piece 16. Through the arrangement of the structure, the rotation resistance of the main part 1 1s further increased, such that a counter force the cutting knife 2 receives during greenbelt cutting cannot drive the main part 1 to rotate, so that the stability of the device 1s then improved.

Referring to FIGs. 1, 7 and 8, shifting plates 19 are equidistantly hinged on the concave surface of the main part 1, and the distance from the lower surface of the shifting plate 19 to the ground is smaller than the distance from the cutting knife 2 to the ground. When the walking mechanism drives the main part 1 and the cutting knives 2 to move forwards, the shifting plates 19 may shift the cut greenbelt, and then the leaves left on the top of the greenbelt are made to fall to the greenbelt bottom.

Through the above actions, the impact on the beauty of the greenbelt is reduced when the leaves are dried up, and meanwhile, the leaves falling to the greenbelt bottom will generate a composting effect, which in turn makes the greenbelt grow better.

Referring to FIGs. 5 and 7, a piston end of the suction piece 17 is in sealed sliding connection with the inner wall of the liquid storage piece 16 (the connection is similar to the connection between an oil cylinder and a piston in the prior art), a cavity of the liquid storage piece 16 on the lower side of the suction piece 17 is filled with a liquid medium (such as hydraulic oil), an extension block 20 is welded on one side of the shifting plate 19 on the concave surface of the main part 1, a rotating cavity 21 is formed in both the extension block 20 and the main part 1, a driving 10

BL-5642 piece 22 is slidably mounted in the rotating cavity 21, a piston end of the drivip#363/ piece 22 is in sealed sliding connection with an inner wall of the rotating cavity 21, a liquid guide pipe 23 is arranged in all of the main part 1, the extension block 20 and the liquid storage piece 16, a liquid inlet end of the liquid guide pipe 23 communicates with the cavity on the lower side of the suction piece 17 in the liquid storage piece 16, a rotary connecting piece 1s arranged at the communication position to achieve the communication between the liquid storage piece 16 and the liquid guide pipe 23 when the two rotate relatively, a liquid outlet end of the liquid guide pipe 23 communicates with a cavity on the upper side of the driving piece 22 in the rotating cavity 21 (the cavity of the liquid storage piece 16 that communicates with the rotating cavity 21 through the liquid guide pipe 23 is filled with a liquid medium), the driven piece 24 is slidably mounted on the lower side of the driving piece 22 in the rotating cavity 21, one end of the driving piece 22 facing the driven piece 24 extends into the interior of the driven piece 24, a third elastic piece 25 1s fixedly mounted between one end of the driving piece 22 facing the driven piece 24 and the interior of the driven piece 24, and one end of the driven piece 24 facing away from the driving piece 22 extends out of the rotating cavity 21 and is welded and fixed with one side of the shifting plate 19; when the power mechanism 13 drives the main part 1 to rotate and cross over the lamp post, the compression piece 15 synchronously extrudes the suction piece 17 to enable the suction piece 17 to downwards extrude the second elastic piece 18 and a liquid medium in the cavity of the liquid storage piece 16, and then, the liquid medium enters the rotating cavity 21 through the liquid guide pipe 23 and pushes the driving piece 22 to move downwards, the driving piece 22 moving downwards pushes the driven piece 24 to move synchronously through the elasticity of the third elastic piece 25, and drives the shifting plate 19 to rotate, such that the lower end surface of the shifting plate 19 faces the sky.

Through the above actions, the resistance between the shifting plate 19 and the greenbelt is further prevented from affecting the rotation of the main part 1, then, when the main part 1 rotates and is reset, the second elastic piece 18 drives the arc-shaped end of the 11

BL-5642 suction piece 17 to be moved in the space between the two ends of the compresst6°687 piece 15 again, and meanwhile, the liquid medium in the rotating cavity 21 returns to the liquid storage piece 16 again.

In the process, the driving piece 22 moves upwards and is reset and pulls the third elastic piece 25, such that the driven piece 24 drives the shifting plate 19 to rotate and be reset.

In the process of resetting the shifting plate 19, the shifting plate 19 may shift the greenbelt on the other side of the lamp post to the cutting knife 2, and through the above actions, the overall trimming range of the greenbelt is further improved.

In addition, when part of the shifting plate 19 rotates and is in contact with the lamp post, the lamp post may prevent the shifting plate 19 from being reset, such that the driving piece 22 and the driven piece 24 further stretch the third elastic piece 25 until the shifting plate 19 does not be in contact with the lamp post.

Through the above actions, the lamp post is prevented from affecting the normal operation of the shifting plate 19. 12

Claims

BL-5642 CLAIMS: LU503637

I. A municipal administration greenbelt maintenance and trimming device, comprising: a main part, wherein a walking mechanism is arranged on one side of the main part, a mechanical arm is arranged on the walking mechanism, a cutting knife 1s arranged on a lower surface of the main part to cut a greenbelt, a connecting rod 1s arranged on a position, close to the walking mechanism, of an upper surface of the main part to form relative rotation with the main part, a cavity is arranged in a position, corresponding to the connecting rod, inside the main part, an upper end of the connecting rod is connected with the mechanical arm, a lower end of the connecting rod extends into the cavity, a lower side of a circumferential outer side surface of the connecting rod is in rotatable connection with the main part, and a rotation mechanism 1s arranged inside the cavity to drive the main part to rotate and cross over an obstacle.
2. The municipal administration greenbelt maintenance and trimming device according to claim 1, wherein the rotation mechanism comprises an extension-retraction cavity, a telescopic piece, a movable conductive block, first elastic pieces, an upper conductive block, a lead, a power mechanism, a lower conductive block and a compression piece, wherein a power supply is arranged on an upper side of the connecting rod, the extension-retraction cavity is arranged in an interior of a lower end head of the connecting rod, the telescopic piece is movably clamped in the extension-retraction cavity, the movable conductive block is arranged in the extension-retraction cavity and configured for forming synchronous movement with the telescopic piece, the first elastic pieces are arranged on both sides of the movable conductive block in the extension-retraction cavity and configured for connecting a side surface of the telescopic piece facing the walking mechanism and connecting an inner wall of the extension-retraction cavity, with the elasticity of the first elastic pieces being greater than the resistance against the cutting knife cutting the greenbelt, the upper conductive block is arranged on an upper side of the extension-retraction cavity in the connecting rod, the lead is arranged on the upper 13

BL-5642 side of the upper conductive block in the connecting rod, the power mechanisit+?95657 arranged at a lower part of the connecting rod in the cavity, an upper surface of the power mechanism is in fixed connection with a lower end surface of the connecting rod, a rotating shaft of the power mechanism is in fixed connection with a bottom surface of the cavity, the lower conductive block is arranged between the extension-retraction cavity and the power mechanism in the connecting rod, an outer side of the connecting rod is sleeved with the compression piece in the cavity, an outer side surface of the compression piece is connected with an inner wall of the cavity, an arc-shaped end of the telescopic piece is disposed in a space between two ends of the compression piece, one end, opposite to the running direction of the walking mechanism, of the compression piece is an arc-shaped end, when the telescopic piece is retracted into the extension-retraction cavity, the power supply passes through the lead, the upper conductive block, the movable conductive block and the lower conductive block, and then the power mechanism is driven to operate, with a rotating speed of the power mechanism being greater than an advancing speed of the walking mechanism.
3. The municipal administration greenbelt maintenance and trimming device according to claim 2, wherein the main part is of an arc-shaped structure, and the main part has a concave surface facing a direction opposite to the running direction of the walking mechanism.
4. The municipal administration greenbelt maintenance and trimming device according to claim 1, wherein a rotating ring is formed in the upper side of the circumferential outer side surface of the connecting rod, and balance rods are arranged between the circumferential surface of the rotating ring and the upper surface of the main part to achieve the stress balance of the connecting rod.
5. The municipal administration greenbelt maintenance and trimming device according to claim 3, a liquid storage piece is arranged at a lower part of the compression piece in the cavity, the liquid storage piece is connected with the connecting rod, a suction piece 1s arranged in an inner chamber of the liquid storage 14

BL-5642 piece, an arc-shaped end of an upper side of the suction piece is disposed in a spac&séS7 between the two ends of the compression piece, a lower surface of the compression piece is of a smooth transition from a bevel to a plane, there is a vertical distance between a highest point of the lower surface of the compression piece and an upper end surface of the suction piece, and a second elastic piece is arranged between the lower end surface of the suction piece and the bottom surface of the cavity of the liquid storage piece to achieve the upward reset of the suction piece.
6. The municipal administration greenbelt maintenance and trimming device according to claim 5, wherein a shifting plate is arranged on the concave surface of the main part and configured for shifting the greenbelt, and a distance from a lower surface of the shifting plate to the ground is smaller than a distance from the cutting knife to the ground.
7. The municipal administration greenbelt maintenance and trimming device according to claim 6, wherein a piston end of the suction piece is in sealed sliding connection with the inner wall of the liquid storage piece, an extension block is arranged on one side of the shifting plate on the concave surface of the main part, a rotating cavity is formed in both the extension block and the main part, a driving piece is arranged in the rotating cavity, a liquid guide pipe 1s arranged in all of the main part, the extension block and the liquid storage piece and configured for achieving a mutual flow of a medium in a cavity of the liquid storage part and a medium in the rotating cavity, a rotary connecting piece is arranged between the liquid guide pipe and the liquid storage piece and configured for achieving a communication between the liquid storage piece and the liquid guide pipe during relative rotation, a driven piece is mounted on a lower side of the driving piece in the rotating cavity in a sliding manner, one end of the driving piece facing the driven piece extends into an interior of the driven piece, a third elastic piece is arranged between one end of the driving piece facing the driven piece and the interior of the driven piece, and one end of the driven piece facing away from the driving piece is connected with the shifting plate. 15

BL-5642
8. The municipal administration greenbelt maintenance and trimming devr625657 according to claim 7, wherein the cavity of the liquid storage piece on the lower side of the suction piece is filled with a liquid medium. 16