阅读说明：本技术 一种高速公路护栏下侧草地的除草装置 (Weeding device for grassland on lower side of highway guardrail ) 是由 葛月红 于 2021-01-19 设计创作，主要内容包括：本发明公开的一种高速公路护栏下侧草地的除草装置,包括除草机体,所述除草机体上侧左右对称看有滑动槽,左侧的所述滑动槽的左侧设有开口向左的连通槽,所述导向装置包括开设在所述滑动槽上侧的带轮槽拧动拧接块和拧转块可以调节导向轮的位置,从而达到该装置可以随着护栏蜿蜒而前进的目的,同时在切割刀要碰到竖直护栏时,红外线位置传感器会识别位置,从而将切割刀先向上后向左移动收回机体,待移动过竖直护栏后,切割刀继续除草,同时风扇叶片会将切下来的槽向左吹,吸气泵将草回收。(The invention discloses a weeding device for grasslands on the lower sides of guardrails of highways, which comprises a weeding machine body, wherein sliding grooves are symmetrically seen on the upper side of the weeding machine body in the left-right direction, a communicating groove with a leftward opening is formed in the left side of the sliding groove on the left side, the guiding device comprises a belt wheel groove arranged on the upper side of the sliding groove, a screwing block is screwed and moved by the belt wheel groove and a screwing block, the position of a guide wheel can be adjusted, so that the purpose that the device can move forwards along with the winding of the guardrail is achieved, meanwhile, when a cutting knife touches a vertical guardrail, an infrared position sensor can identify the position, so that the cutting knife moves upwards and then leftwards to retract the machine body, after the cutting knife moves over the vertical guardrail, the cutting knife continues weeding, meanwhile, a fan.)

1. The utility model provides a weeding device on grassland of highway guardrail downside, includes the weeder body, its characterized in that: the upper side of the weeding machine body is bilaterally symmetrical to see a sliding groove, the left side of the sliding groove on the left side is provided with a communicating groove with a left opening, a guide device is arranged between the sliding groove and the communicating groove, the guide device comprises a belt wheel groove arranged on the upper side of the sliding groove, a transmission lead screw is rotatably matched with a wall body between the belt wheel groove and the sliding groove, the transmission lead screw is in threaded connection with a sliding block in sliding connection with the sliding groove, a rotating lead screw is arranged in the sliding block, the wall body between the left sliding block and the right sliding block is rotatably connected with a rotating lead screw, a central groove is arranged in the sliding block, the rotating lead screw is positioned on the left central groove and the right central groove and is internally threaded with an adjusting block in sliding connection with the central groove, the thread directions of the left adjusting block and the right adjusting block are, the guide shaft extends downwards to be positioned in the guide groove and is fixedly connected with a guide wheel, the guide wheel is adjusted in height by rotating the transmission lead screw, the horizontal direction of the guide wheel can be adjusted by rotating the rotation lead screw, so that the guide wheel is abutted against a guardrail of a green belt on a highway to play a guiding role, the transmission lead screw on the left and the right is positioned in the belt wheel groove and is connected by belt transmission, through grooves with downward openings are arranged in the front and the back of the weeding machine body in a penetrating way, the left side of each through groove is communicated with a mounting groove, the weeding machine body is provided with through grooves which are penetrated forwards and backwards and have downward openings, the right side of each through groove is communicated with an abutting groove, a weeding device is arranged between each abutting groove and the mounting groove, the weeding device comprises a fixed block fixedly connected with the mounting groove, a sliding groove is arranged in the fixed block, and a limiting, a shifting block is in sliding fit in the sliding groove, matching grooves with right openings are symmetrically arranged on the left side of the fixed block from top to bottom, the matching grooves are rotationally connected with a limiting shaft towards a wall body far away from the central end face direction of the fixed block, a connecting torsion spring is connected between the limiting shaft and the top wall of the matching grooves, the limiting shaft is positioned in the matching grooves and is fixedly connected with a connecting block, the tail end of the right side of the connecting block is fixedly connected with a rotating block, a connecting groove capable of being in sliding fit with the shifting block is arranged in the rotating block, a limiting groove is arranged in the connecting groove, a sliding groove is arranged in the fixed block, a shifting groove is arranged in the sliding groove, a limiting pin in sliding connection with the limiting groove and the limiting groove is in sliding connection with the shifting groove, a bevel gear transmission groove is arranged on the right side of the shifting groove, a, when the weeding machine body runs into a vertical guardrail to block in the advancing process, the cutting knife firstly moves upwards and then moves leftwards to return to the mounting groove.

2. A weeding apparatus for grass on the underside of a guard rail of an expressway as claimed in claim 1, further comprising: the guiding device further comprises a twisting block fixedly connected with the rotating screw rod and positioned at the outer end of the left side of the weeding machine body, and the transmission screw rod on the left side extends upwards to the outer end of the weeding machine body and is fixedly connected with the twisting block.

3. A weeding apparatus for grass on the underside of a guard rail of an expressway as claimed in claim 2, further comprising: weeding device still include with mounting groove rear wall normal running fit's transmission shaft, the transmission shaft is located fixedly connected with rotates half bevel gear in the mounting groove, the mounting groove downside is equipped with the linking groove, link up the groove with wall body normal running fit between the mounting groove has the band pulley axle, the band pulley axle is located mounting groove internal spline connection have can with rotate half bevel gear meshing's rotation bevel gear, be provided with the ring joint groove in the rotation bevel gear, mounting groove diapire fixed mounting have scalable and with the ring joint groove rotates the electric putter of connecting, the mounting groove rear wall with be connected with the restriction torsional spring between the transmission shaft, transmission shaft fixedly connected with is located rotate the terminal dead lever in half bevel gear front side, the dead lever front side articulated have with move the articulated rod that the joint piece rotated the connection.

4. A weeding apparatus for grass on the underside of a guard rail of an expressway as claimed in claim 3, further comprising: the matching shaft and the rotating shaft are located in the bevel gear transmission groove and are connected through a bevel gear pair, the matching shaft is axially connected with a connecting friction wheel in a manner that the outer end of the right side of the sliding groove extends and is fixedly connected with the connecting friction wheel, an open groove is formed in the right side of the butt groove, a driven shaft is connected with the wall body between the open groove and the butt groove in a rotating manner, the driven shaft is located in the butt groove and is fixedly connected with the butt friction wheel in a friction fit manner with the connecting friction wheel, a power shaft is rotationally connected to the bottom side of the weeding machine body, the power shaft is fixedly connected with a connecting wheel and is connected with the driven shaft in a belt transmission manner, a fan blade is fixedly connected to the left extending end of the power shaft, and.

5. A weeding apparatus for grass on the underside of a highway guardrail as claimed in claim 4, wherein: the weeding device also comprises a connecting shaft rotationally connected with the left wall at the bottom side of the weeding machine body, the right end of the connecting shaft is connected with an air suction pump, the connecting shaft is fixedly connected with a rotating wheel positioned at the left side of the air suction pump, the left extending end of the connecting shaft is in power connection with a connecting motor embedded in the inner wall of the weeding machine body, the upper side of the mounting groove is provided with a bevel gear connecting groove, a wall body between the bevel gear connecting groove and the linking groove is rotationally matched with an extending shaft, the extending shaft and the pulley shaft are positioned in the linking groove and are connected through belt transmission, the mounting groove is connected with the connecting shaft through a bevel gear pair, the upper side of the mounting groove is communicated with a shifting chute positioned at the right side of the bevel gear connecting groove, the wall body between the shifting chute and the bevel gear connecting groove is rotationally matched with a, the gear shaft be with move the spout in fixedly connected with slip rack, move spout in sliding connection have with slip rack toothing's slip electro-magnet, the slip electro-magnet with move and be connected with the butt spring between the spout roof, the terminal fixedly connected with slip electro-magnet of slip rack downside, fixed block top fixedly connected with can with the fixed magnet of slip electro-magnet inter attraction, weeder left side wall fixed mounting has infrared ray position sensor.

Technical Field

The invention relates to the field of road greening, in particular to a weeding device for grasslands on the lower sides of guardrails of expressways.

Background

With the rapid construction of the high-speed highway and the continuous progress of social economy, people also meet the requirements of smooth, clean, green and beautiful ecological large channels, guardrails are arranged on lawns on two sides of the high-speed highway, and the lawns under the guardrails need to be maintained by investing a large amount of manpower and material resources due to waste force when being trimmed.

Disclosure of Invention

Aiming at the technical defects, the invention provides a weeding device for grasslands on the lower sides of guardrails of highways, which can overcome the defects.

The invention relates to a weeding device for grasslands on the lower sides of guardrails of highways, which comprises a weeding machine body, sliding grooves are symmetrically seen on the upper side of the weeding machine body in the left-right direction, a communicating groove with a leftward opening is formed in the left side of the sliding groove on the left side, a guide device is arranged between the sliding groove and the communicating groove, the guide device comprises a belt wheel groove formed in the upper side of the sliding groove, a transmission lead screw is rotatably matched with a wall body between the belt wheel groove and the sliding groove, the transmission lead screw is in threaded connection with a sliding block in sliding connection with the sliding groove, a rotating lead screw is arranged in the sliding block, the wall body between the left sliding block and the right sliding block is rotatably connected with a rotating lead screw, a central groove is formed in the sliding block, adjusting blocks in sliding connection with the central groove are in threaded connection with the central groove, the lower side of the sliding groove is communicated with a guide groove, the bottom wall of the sliding block is rotatably connected with a guide shaft, the guide shaft extends downwards and is positioned in the guide groove and fixedly connected with a guide wheel, the transmission screw rod is rotated to adjust the height of the guide wheel, the horizontal direction of the guide wheel can be adjusted by rotating the rotation screw rod, so that the guide shaft is abutted against a guardrail of a green belt on a highway to play a guiding role, the transmission screw rods on the left and the right are positioned in the belt wheel groove and are connected by belt transmission, through grooves with downward openings are arranged in the front and the back of the weeding machine body in a penetrating way, the left side of each through groove is communicated with a mounting groove, the weeding machine body is provided with through grooves which are penetrated forwards and backwards and have downward openings, the right sides of the through grooves are communicated with abutting grooves, a weeding device is arranged between the abutting grooves and the mounting groove, and the weeding, a sliding groove is arranged in the fixed block, a limiting groove is arranged in the sliding groove, a shifting block is in sliding fit in the sliding groove, matching grooves with right openings are symmetrically arranged on the left side of the fixed block from top to bottom, the matching grooves are rotationally connected with a limiting shaft towards a wall body far away from the central end face direction of the fixed block, a connecting torsion spring is connected between the limiting shaft and the top wall of the matching groove, the limiting shaft is positioned in the matching grooves and is fixedly connected with a connecting block, the tail end of the right side of the connecting block is fixedly connected with a rotating block, a connecting groove capable of being in sliding fit with the shifting block is arranged in the rotating block, the connecting groove is provided with a limiting groove, a sliding groove is arranged in the fixed block, a shifting groove is arranged in the sliding groove, a limiting pin in sliding connection with the limiting groove and the limiting, the utility model discloses a weeding machine, including the body, the body is pressed down to the rotatory axis end fixedly connected with cutting knife when the weeder body bumps vertical guardrail and blocks in-process that gos forward, the cutting knife upwards removes earlier, and the back is got back to the mounting groove to left side removal.

Preferably, the guide device further comprises a screwing block fixedly connected with the rotating screw rod and located at the outer end of the left side of the weeding machine body, and the transmission screw rod on the left side extends upwards to the outer end of the weeding machine body and is fixedly connected with the screwing block.

Preferably, the weeding device further comprises a transmission shaft which is in running fit with the rear wall of the mounting groove, the transmission shaft is located a half bevel gear which is fixedly connected with and rotates in the mounting groove, a connecting groove is arranged on the lower side of the mounting groove, a belt wheel shaft is in running fit with the wall body between the mounting groove, the belt wheel shaft is located the mounting groove, spline connection is arranged in the mounting groove, the half bevel gear is meshed with the rotation bevel gear, a ring connecting groove is arranged in the rotation bevel gear, the bottom wall of the mounting groove is fixedly provided with an electric push rod which can stretch and can be connected with the ring connecting groove in a rotating mode, a limiting torsion spring is connected between the rear wall of the mounting groove and the transmission shaft, the transmission shaft is fixedly connected with a fixed rod which is located at the front end of the rotation half bevel gear, and the front side.

Preferably, the matching shaft and the rotating shaft are located in the bevel gear transmission groove and are connected through a bevel gear pair, the matching shaft is connected with a connecting friction wheel in a manner that the outer end of the right side of the sliding groove extends and is fixedly connected with a connecting friction wheel, an open groove is formed in the right side of the butting groove, a driven shaft is connected with the wall body between the open groove and the butting groove in a rotating manner, the driven shaft is located in the butting groove and is fixedly connected with the butting friction wheel in a manner that the butting friction wheel is in friction fit with the connecting friction wheel, a power shaft is connected to the bottom side of the weeding machine body in a rotating manner, the power shaft is fixedly connected with a connecting wheel and is connected with the driven shaft through belt transmission, a fan blade is fixedly connected to the left end of the.

Preferably, the weeding device further comprises a connecting shaft rotatably connected with the left wall of the bottom side of the weeding machine body, the right end of the connecting shaft is connected with an air suction pump, the connecting shaft is fixedly connected with a rotating wheel positioned on the left side of the air suction pump, the left extending end of the connecting shaft is in power connection with a connecting motor embedded in the inner wall of the weeding machine body, the upper side of the mounting groove is provided with a bevel gear connecting groove, a wall body between the bevel gear connecting groove and the connecting groove is rotatably matched with an extending shaft, the extending shaft and the pulley shaft are positioned in the connecting groove and connected through belt transmission, the mounting groove is connected with the connecting shaft through a bevel gear pair, the upper side of the mounting groove is communicated with a sliding groove positioned on the right side of the bevel gear connecting groove, the wall body between the sliding groove and the bevel gear connecting groove is rotatably matched with a gear shaft, the gear shaft be with move the spout in fixedly connected with slip rack, move spout in sliding connection have with slip rack toothing's slip electro-magnet, the slip electro-magnet with move and be connected with the butt spring between the spout roof, the terminal fixedly connected with slip electro-magnet of slip rack downside, fixed block top fixedly connected with can with the fixed magnet of slip electro-magnet inter attraction, weeder left side wall fixed mounting has infrared ray position sensor.

The invention has the beneficial effects that: twist and twist the position that connects the piece and twist the piece and can adjust the leading wheel, thereby reach the device and can meander and the purpose that advances along with the guardrail, when vertical guardrail will be touchhed at the cutting knife simultaneously, infrared ray position sensor can the identification position, thereby remove the organism of withdrawing left with the cutting knife earlier after upwards, after waiting to remove vertical guardrail, the cutting knife continues to weed, the groove that the fan blade can cut off simultaneously blows left, the aspiration pump is retrieved the grass, the problem that the grass under the guardrail was difficult to the excision has been solved, the cost of manpower and material resources has been reduced.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view showing the overall construction of a grass-removing apparatus for grass under a guard rail of an expressway;

FIG. 2 is an enlarged view of a portion of the structure at A in FIG. 1;

FIG. 3 is a schematic view of the structure in the direction B-B in FIG. 1;

fig. 4 is a schematic structural view of the turning block 70 in the unfolded state.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to a weeding device for grasslands on the lower sides of guardrails of highways, which comprises a weeding machine body 10, sliding grooves 16 are symmetrically seen on the upper side of the weeding machine body 10 in the left-right direction, a communicating groove 17 with a left opening is formed in the left side of the sliding groove 16 on the left side, a guide device is arranged between the sliding groove 16 and the communicating groove 17, the guide device comprises a pulley groove 14 formed in the upper side of the sliding groove 16, a transmission screw rod 12 is rotatably matched on the wall body between the pulley groove 14 and the sliding groove 16, the transmission screw rod 12 is in threaded connection with a sliding block 13 in sliding connection with the sliding groove 16, a rotating screw rod 75 is arranged in the sliding block 13, a rotating screw rod 75 is rotatably connected on the sliding block wall body between the left sliding block 13 and the right sliding block 13, a central groove 31 is formed in the sliding block 13, an adjusting block 18 in sliding connection with the central groove 31 is, the thread directions of the left and right adjusting blocks 18 are opposite, the lower side of the sliding groove 16 is communicated with a guide groove 30, the bottom wall of the sliding block 13 is rotatably connected with a guide shaft 29, the guide shaft 29 extends downwards and is positioned in the guide groove 30 to be fixedly connected with a guide wheel 28, the height of the guide wheel 28 is adjusted by rotating the transmission screw rod 12, the horizontal direction of the guide wheel 28 can be adjusted by rotating the rotation screw rod 75 to abut against a guardrail of a green belt on an expressway to play a guiding role, the left and right transmission screw rods 12 are positioned in the pulley grooves 14 and are in belt transmission connection, a through groove 73 with a downward opening is arranged in the weeding machine body 10 in a front-back penetrating manner, an installation groove 67 is communicated with the left side of the through groove 73, the weeding machine body 10 is provided with a through groove 73 with a front-back penetrating manner and a downward opening, and the right side of the through groove 73 is communicated with an abutting, the butt joint groove 20 with be provided with weeding device between the mounting groove 67, weeding device include with mounting groove 67 fixed connection's fixed block 48, be equipped with sliding groove 51 in the fixed block 48, be equipped with restriction groove 52 in the sliding groove 51, sliding fit has shifting block 74 in sliding groove 51, fixed block 48 left side longitudinal symmetry is equipped with opening right cooperation groove 61, cooperation groove 61 is connected with restriction axle 54 towards the wall rotation of keeping away from fixed block 48 central end face direction, be connected with between restriction axle 54 and the cooperation groove 61 roof and be connected with torsional spring 55, restriction axle 54 is located fixedly connected with connecting block 53 in the cooperation groove 61, connecting block 53 right side end fixedly connected with turning block 70, be equipped with in the turning block 70 can with shifting block 74 sliding fit's spread groove 72, spread groove 72 is equipped with spacing groove 71, be equipped with spout 63 in the fixed block 48, be equipped with shift groove 77 in the spout 63, shift groove 77 sliding connection have with restriction groove 52 with spacing groove 71 sliding connection's restriction round pin 76, shift groove 77 right side is equipped with bevel gear drive groove 65, bevel gear drive groove 65 diapire rotates and is connected with rotation axis 49, rotation axis 49 pushes down the terminal fixedly connected with cutting knife 47 of body the time weed killer body 10 gos forward the in-process and runs into vertical guardrail and block, cutting knife 47 moves up earlier, moves back to the left and gets back to in the mounting groove 67.

Advantageously, the guide means further comprises a twist block 19 fixedly connected to the rotary screw 75 and located at the left outer end of the body 10, the left drive screw 12 extending upwardly to the outer end of the body 10 to which a twist block 15 is fixedly connected.

Advantageously, the weeding device further comprises a transmission shaft which is in rotating fit with the rear wall of the mounting groove 67, the transmission shaft is fixedly connected with a rotating half bevel gear 32 positioned in the mounting groove 67, a joint groove 45 is arranged at the lower side of the mounting groove 67, a pulley shaft 37 is rotatably matched with the wall body between the joint groove 45 and the mounting groove 67, the pulley shaft 37 is splined in the mounting groove 67 with a rotary bevel gear 36 capable of meshing with the rotary half bevel gear 32, an annular connecting groove 35 is arranged in the rotary bevel gear 36, an electric push rod 38 which can stretch out and draw back and is rotationally connected with the annular connecting groove 35 is fixedly arranged on the bottom wall of the mounting groove 67, a limiting torsion spring is connected between the rear wall of the mounting groove 67 and the transmission shaft, the transmission shaft is fixedly connected with a fixed rod 33 positioned at the front end of the rotary half bevel gear 32, the front side of the fixed rod 33 is hinged with a hinged rod 68 which is rotatably connected with the moving and connecting block 74.

Advantageously, the weeding device further comprises a matching shaft 62 rotatably connected with the right wall of the bevel gear transmission groove 65, the matching shaft 62 is connected with the rotating shaft 49 in the bevel gear transmission groove 65 through a bevel gear pair, the matching shaft 62 extends and is fixedly connected with a connecting friction wheel 50 towards the outer end of the right side of the sliding groove 63, the right side of the abutting groove 20 is provided with an open groove 24, the wall between the open groove 24 and the abutting groove 20 is rotatably connected with a driven shaft 22, the driven shaft 22 is fixedly connected with an abutting friction wheel 21 in friction fit with the connecting friction wheel 50 in the abutting groove 20, the bottom side of the weeding machine body 10 is rotatably connected with a power shaft 26, the power shaft 26 is fixedly connected with a connecting wheel 25, the power shaft 26 is connected with the driven shaft 22 through belt transmission, the power shaft 26 extends leftwards, and is fixedly connected with a fan blade 23, the power shaft 26 extends rightwards, and the tail end is in power connection with a power motor 27 embedded in the inner wall of the weeding machine body 10.

Advantageously, the weeding device further comprises a connecting shaft 41 rotatably connected with the left wall of the bottom side of the weeding machine body 10, the right end of the connecting shaft 41 is connected with a suction pump 43, the connecting shaft 41 is fixedly connected with a rotating wheel 42 positioned at the left side of the suction pump 43, the left extending end of the connecting shaft 41 is connected with a connecting motor 40 embedded in the inner wall of the weeding machine body 10 in a power mode, a bevel gear connecting groove 66 is arranged at the upper side of the mounting groove 67, a wall body between the bevel gear connecting groove 66 and the connecting groove 45 is rotatably matched with an extending shaft 46, the extending shaft 46 and the belt wheel shaft 37 are positioned in the connecting groove 45 and are connected through belt transmission, the mounting groove 67 is connected with the connecting shaft 41 through a bevel gear pair, a sliding groove 60 positioned at the right side of the bevel gear connecting groove 66 is communicated with the upper side of the mounting groove 67, and a gear, the gear shaft 64 and the extension shaft 46 are located in the bevel gear connecting groove 66 and are connected through a bevel gear pair, the gear shaft 64 is fixedly connected with a sliding rack 57 in the sliding groove 60, a sliding electromagnet 56 meshed with the sliding rack 57 is connected in the sliding groove 60 in a sliding manner, an abutting spring 59 is connected between the sliding electromagnet 56 and the top wall of the sliding groove 60, the sliding electromagnet 56 is fixedly connected to the tail end of the lower side of the sliding rack 57, a fixed magnet 69 capable of attracting the sliding electromagnet 56 is fixedly connected to the top end of the fixed block 48, and the infrared ray position sensor 44 is fixedly mounted on the left wall of the weeding machine body 10.

The use steps herein are described in detail below with reference to fig. 1-4:

when the device is in an initial state, the fixed block 48 and the rotating block 70 are in a ninety-degree angle, the torsion spring is limited to be in a relaxed state, the rotating bevel gear 36 and the rotating half bevel gear 32 are not meshed, the fixed magnet 69 and the sliding electromagnet 56 are mutually attracted, the connecting torsion spring 55 is in a screwed state, and the moving block 74 is positioned at the leftmost side of the sliding groove 51.

When grass on the highway under the guardrail is needed to be weeded, the weeding machine body 10 is put in from top to bottom through the through groove 73, the twisting block 15 is twisted to adjust the guide wheel 28 and the guardrail on the upper side to the same horizontal plane, the twisting block 19 is twisted to lead the guide wheel 28 to be close to the abutting guardrail, the power motor 27 and the connecting motor 40 are started, the connecting shaft 41 and the power shaft 26 rotate to lead the weeding machine body 10 to move, meanwhile, the connecting shaft 41 rotates to drive the belt wheel shaft 37 to rotate through the bevel gear pair, the extension shaft 46 rotates under the action of belt transmission without ever rotating through the bevel gear pair drive gear shaft 64, thus leading the sliding rack 57 to drive the sliding electromagnet 56 to move upwards, under the action of the abutting spring 59, the last tooth of the sliding electromagnet 56 is always meshed with the sliding rack 57, thus leading the fixed magnet 69 to be separated from the attraction with the sliding electromagnet 56, under the action of the connecting torsion spring 55, the limiting shaft 54 drives the connecting block 53 to rotate, so that the rotating block 70 is unfolded to be in the same plane with the fixed block 48, meanwhile, the electric push rod 38 extends, so that the rotating bevel gear 36 is meshed with the rotating half bevel gear 32, so that the transmission shaft is driven to rotate under the action of the belt wheel shaft 37, under the action of the limiting spring, the last tooth of the rotating half bevel gear 32 is always meshed with the rotating half bevel gear 32, so that the rotating half bevel gear 32 rotates by one hundred eighty degrees, so that under the cooperation of the rotating half bevel gear 32 and the hinge rod 68, the moving and connecting block 74 is pushed rightwards to move in the sliding groove 51 and the connecting groove 72, under the action of the shifting groove 77, the limiting groove 52 and the limiting groove 71, the moving and connecting block 74 moves rightwards first and then moves downwards, so that the connecting and abutting and friction wheel 50 abuts against the driven shaft 21, and the driven shaft 26 rotates through belt transmission, thereby drive the cooperation axle 62 and rotate, thereby it rotates to drive rotation axis 49 under the transmission of bevel gear pair, rotation axis 49 rotates and drives cutting knife 47 and rotate, thereby make cutting knife 47 weed, the grass that is cut is blown the back by aspirator pump 43 left by fan blade 23 under power shaft 26 drives and is inhaled the collection, when infrared ray position sensor 44 detects the front side and has vertical guardrail, electric putter 38 shortens, thereby make rotation bevel gear 36 and dead lever 33 break away from the meshing, under limiting spring's effect, move joint block 74 and get back to initial position, turning block 70 can be followed the removal of weeding organism 10 and rotated by the guardrail butt, it moves to the back to run through groove 73 intermediate position and can not be with vertical guardrail butt to wait cutting knife 47, rotation bevel gear 36 again with rotate half bevel gear 32 meshing, thereby make cutting knife 47 continue to weed, with this circulation.

The invention has the beneficial effects that: twist and twist the position that connects the piece and twist the piece and can adjust the leading wheel, thereby reach the device and can meander and the purpose that advances along with the guardrail, when vertical guardrail will be touchhed at the cutting knife simultaneously, infrared ray position sensor can the identification position, thereby remove the organism of withdrawing left with the cutting knife earlier after upwards, after waiting to remove vertical guardrail, the cutting knife continues to weed, the groove that the fan blade can cut off simultaneously blows left, the aspiration pump is retrieved the grass, the problem that the grass under the guardrail was difficult to the excision has been solved, the cost of manpower and material resources has been reduced.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.