Avoidance type green plant pruning mechanism

Abstract

The utility model discloses an avoiding type green plant pruning mechanism which comprises a pruning traction seat and a pruning avoiding shaft, an avoiding shaft driving device and an avoiding control device are fixedly installed on the pruning traction seat, a pruning machine head is arranged below the pruning traction seat, an avoiding connecting device is arranged between the pruning avoiding shaft and the pruning machine head, and the avoiding connecting device is connected with the pruning traction seat. Wiring through holes allowing wires to penetrate through are formed in the pruning avoiding shaft and the avoiding connecting device respectively, an upper electric slip ring is fixedly connected to the top end of the pruning avoiding shaft, and a lower electric slip ring is correspondingly arranged under the pruning avoiding shaft; when the pruning machine encounters an obstacle in the pruning process, the avoiding connecting device is driven to rotate under the blocking of the obstacle, so that the avoiding control device generates a signal to start the avoiding shaft driving device, the pruning machine head is rotated by 180 degrees through the pruning avoiding shaft, then the avoiding control device is triggered again to generate a signal, and the avoiding shaft driving device is stopped; and automatic avoidance of the obstacle is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of matching parts for green plant trimmers, in particular to an avoidance type green plant trimmer mechanism. Background Art

[0002] Walking plant trimmers have the advantages of small size, high trimming efficiency, simple and flexible operation, etc., and are increasingly widely used in the trimming and maintenance of green plants on both sides of roads in cities and villages. The trimming task is completed by the trimming mechanism located at the front end of the walking machine body. The walking machine body and the trimming mechanism are connected with supporting parts such as telescopic arms and rotating arms. At the same time, corresponding cylinders are also equipped to coordinate the action to realize the control of the specific trimming position and trimming height of the trimming mechanism. When implementing green plant pruning operations, the pruning mechanism is in direct contact with the green plants. Based on the planting method of green plants, for example, shorter green plants such as holly are planted around and between green trees, when pruning short green plants, the green trees will block the pruning mechanism. The light poles installed on the road will also form pruning obstacles. The driver of the walking body is at a certain distance from the pruning mechanism, making it difficult to control it accurately. Or due to the obstruction of the branches and leaves of the green plants, it is difficult for the operator to accurately observe obstacles such as concrete columns and roadbed stones hidden in the green plants, which will cause the pruning mechanism to collide with the obstacles, increasing the probability of damage to the pruning mechanism, bending and breaking of the pruning arm, etc., increasing the frequency of replacement and maintenance of the pruning mechanism, long downtime of the pruning machine, and increased maintenance costs for green plant pruning. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an avoidance green plant pruning mechanism which can automatically avoid obstacles encountered during use, does not require excessive human effort to observe the pruning environment, helps to protect the pruning parts, and is more convenient to use.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: an avoidance type green plant pruning mechanism, which is rotatably connected to the pruning arm of the green plant pruning machine, including a pruning traction seat, a pruning avoidance shaft is rotatably installed through the pruning traction seat, an avoidance shaft driving device which is transmission-connected to the pruning avoidance shaft is fixedly installed on the pruning traction seat, the avoidance shaft driving device is connected to an avoidance control device for use in conjunction with it, a pruning head is provided below the pruning traction seat, an avoidance connecting device is provided between the pruning avoidance shaft and the pruning head, wiring through holes for wires to pass through are respectively provided through the pruning avoidance shaft and the avoidance connecting device, an upper electric slip ring is fixedly connected to the top end of the pruning avoidance shaft, a lower electric slip ring is correspondingly provided directly below the pruning avoidance shaft, and the lower electric slip ring is installed on the pruning head.

[0005] As a preferred technical solution, the trimming and pulling seat is arranged in the upper middle part of the trimming head, and the avoidance control device includes two triggers fixedly installed on the top of the trimming head, and the two triggers are arranged opposite to each other on both sides of the trimming and pulling seat, and a trigger switch used in conjunction with the trigger is fixedly installed on the trimming and pulling seat, and the two triggers and the trigger switch are respectively connected to the avoidance shaft driving device.

[0006] As a preferred technical solution, the avoidance shaft drive device includes a drive motor fixedly mounted on the trimming and pulling seat, the power output end of the drive motor is connected to a worm gearbox, the worm gearbox is transmission-connected to the trimming and avoidance shaft, and also includes a drive motor controller and a relay for controlling the start and stop of the drive motor, and the trigger switch is connected to the drive motor controller.

[0007] As a preferred technical solution, the avoidance connection device includes a shaft disk fixedly connected to the bottom end of the trimming avoidance shaft, the top of the shaft disk is abutted against a movable clamping disk, the movable clamping disk is sleeved on the outer periphery of the trimming avoidance shaft, and a fixed clamping disk is fixedly installed on the trimming machine head directly below the shaft disk, a clamping bolt is arranged and connected between the fixed clamping disk and the movable clamping disk, and the wiring through holes are respectively provided through the shaft disk and the fixed clamping disk.

[0008] As a preferred technical solution, a protective sleeve is detachably mounted on the top of the avoidance shaft driving device, and the protective sleeve is sleeved on the outer circumference of the upper electrical slip ring and the trimming avoidance shaft.

[0009] As a preferred technical solution, a hollow fixed sleeve is fixedly installed on the trimmer head, the lower electric slip ring is fixed to the top of the fixed sleeve, and a wiring recess for the wire to pass through is arranged at the bottom end of the fixed sleeve.

[0010] As a preferred technical solution, the trimming head includes a head panel in the shape of a rectangular parallelepiped with openings at both ends, a head cover is detachably provided at the top of the head panel, a head connecting frame and a motor fixing plate are sequentially fixed in the upper and lower parts of the head panel, a trimming motor controller is arranged and fixed on the head connecting frame, a trimming motor is arranged and fixed on the top of the motor fixing plate, the trimming motor is connected to the trimming motor controller one by one, and a trimming knife connected to each trimming motor is arranged at the bottom of the motor fixing plate.

[0011] As a preferred technical solution, the head cover includes two relatively arranged cover halves, and the butt ends of the two cover halves are formed with semicircular avoidance recesses for facilitating the passage of the trimming avoidance axis, and the trigger is arranged at the top of the corresponding cover half.

[0012] As a preferred technical solution, the trimming and pulling seat includes two relatively arranged connecting vertical plates, a connecting base plate is fixed between the two connecting vertical plates, the avoidance shaft driving device is fixed on the connecting base plate, and two connecting shafts are parallelly arranged through the two connecting vertical plates, one of the connecting shafts penetrates the trimming arm and is movably arranged, and a rotating pulling arm is rotatably mounted on the other connecting shaft.

[0013] As an improvement to the above technical solution, a fixing frame extending outward is also installed on the connecting base plate, and the trigger switch is arranged on the fixing frame.

[0014] Due to the adoption of the above technical solution, the avoidance type green plant pruning mechanism is rotatably connected to the pruning arm of the green plant pruning machine, including a pruning pulling seat, a pruning avoidance shaft is rotatably installed through the pruning pulling seat, an avoidance shaft driving device which is transmission-connected to the pruning avoidance shaft is fixedly installed on the pruning pulling seat, the avoidance shaft driving device is connected to an avoidance control device for use with it, a pruning head is provided below the pruning pulling seat, an avoidance connecting device is provided between the pruning avoidance shaft and the pruning head, wiring through holes for wires to pass through are respectively provided through the pruning avoidance shaft and the avoidance connecting device, an upper electric slip ring is fixedly connected to the top end of the pruning avoidance shaft, and a corresponding pruning avoidance shaft is provided directly below the pruning avoidance shaft. A lower electric slip ring is provided, and the lower electric slip ring is installed on the trimmer head. The utility model has the following beneficial effects: during the trimming process, if the trimmer head encounters an obstacle, the avoidance connection device will be driven to rotate under the obstruction of the obstacle until the avoidance control device generates a signal to start the avoidance shaft drive device, driving the trimming avoidance shaft to rotate, and after the trimmer head is rotated 180° under the action of the avoidance connection device, the avoidance control device is triggered again to generate a signal to stop the avoidance shaft drive device. The trimmer head cooperates to achieve automatic avoidance of obstacles during the rotation process, and there is no need for people to spend too much energy to observe the trimming environment, which helps to improve the safety of operation and driving, and at the same time achieves better protection for the trimmer head. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0016] Figure 1 This is a schematic diagram of the installation state of an embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of an embodiment of the utility model;

[0018] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at I in the middle;

[0019] Figure 4It is a schematic cross-sectional structure diagram of a partial trimming avoidance shaft, a movable clamping disc and a fixed clamping disc in an embodiment of the present utility model;

[0020] Figure 5 It is a top view of a trimming head in an embodiment of the present utility model;

[0021] Figure 6 It is a schematic diagram of the avoidance process in an embodiment of the present utility model;

[0022] In the figure: 1 - trimming arm; 2 - trimming traction seat; 201 - connecting vertical plate; 202 - connecting bottom plate; 203 - connecting shaft; 204 - rotating traction arm; 205 - fixing bracket; 3 - traction oil cylinder; 4 - trimming avoidance shaft; 5 - trimming head; 6 - driving motor; 7 - worm and worm gear speed reducer; 8 - driving motor controller; 9 - relay; 10 - trigger; 11 - trigger switch; 12 - wiring through hole; 13 - power-on slip ring; 14 - power-off slip ring; 15 - protective sleeve; 16 - fixed sleeve; 17 - shaft disc; 18 - movable clamping disc; 19 - fixed clamping disc; 20 - clamping bolt; 21 - head enclosure; 22 - head cover; 221 - cover half body; 222 - avoidance notch; 23 - rubber retaining ring; 24 - head connecting frame; 25 - motor fixing plate; 26 - trimming motor controller; 27 - trimming motor; 28 - trimming knife. Detailed implementation manners

[0023] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. In the following detailed description, only some exemplary embodiments of the present utility model are described by way of illustration. Undoubtedly, those of ordinary skill in the art can recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present utility model. Therefore, the drawings and the description are illustrative in nature and are not used to limit the protection scope of the claims.

[0024] As Figures 1 to 6 shown, the avoidance type green plant trimming mechanism is rotatably connected to the trimming arm 1 of the green plant trimmer, and includes a trimming traction seat 2. A traction oil cylinder 3 is installed on the trimming arm 1, and the trimming traction seat 2 is rotatably connected to the traction oil cylinder 3. Under the action of the traction oil cylinder 3, the trimming traction seat 2 can rotate at a certain angle along its rotational assembly with the trimming arm 1 to facilitate the overhaul and maintenance of the trimming components. A rotating mechanism driven by a motor is provided at the connection between the trimming arm 1 and the green plant trimmer, so that the trimming arm 1 can be rotated to the left or right side of the green plant trimmer in a timely manner, so as to be flexibly adjusted according to the trimming positions of the green plants on both sides of the road.

[0025] A trimming avoidance shaft 4 is rotatably installed through the trimming and pulling seat 2, an avoidance shaft driving device connected to the trimming avoidance shaft 4 is fixedly installed on the trimming and pulling seat 2, and the avoidance shaft driving device is connected to an avoidance control device used in conjunction with it, and a trimming machine head 5 is provided below the trimming and pulling seat 2. The avoidance control device is used to generate a signal to control the start and stop of the avoidance shaft driving device, so that when the trimming machine head 5 encounters an obstacle, the trimming avoidance shaft 4 is rotated and drives the trimming machine head 5 to rotate to complete the avoidance action.

[0026] Specifically, the avoidance shaft driving device includes a driving motor 6 fixedly mounted on the trimming and pulling seat 2, a worm gearbox 7 is connected to the power output end of the driving motor 6, and the worm gearbox 7 is connected to the trimming and avoidance shaft 4, and also includes a driving motor controller 8 and a relay 9 for controlling the start and stop of the driving motor 6. The driving motor controller 8 is used to receive the signal of the avoidance control device, and realize the timely start and stop control of the driving motor 6 by controlling the relay 9.

[0027] The trimming and pulling seat 2 is arranged in the middle of the upper part of the trimming head 5. The avoidance control device includes two triggers 10 fixedly installed on the top of the trimming head 5, and the two triggers 10 are arranged opposite to each other on both sides of the trimming and pulling seat 2. A trigger switch 11 used in conjunction with the trigger 10 is fixedly installed on the trimming and pulling seat 2, and the trigger switch 11 is connected to the drive motor controller 8. The two triggers 10 and the trigger switch 11 are respectively connected to the avoidance shaft drive device. A transition block with a high middle, low sides and smooth transition from both sides to the middle is provided around the trigger 10 to ensure that during the rotation of the trimming head 5, the trigger 10 can smoothly cooperate with the trigger switch 11 to avoid jamming and damage. The cooperation of the two triggers 10 and the trigger switch 11 actually forms the rotation stroke control of the trimming head 5.

[0028] In this embodiment, the trimming and pulling seat 2 includes two oppositely arranged connecting vertical plates 201. A connecting bottom plate 202 is fixed between the two connecting vertical plates 201. The avoidance shaft driving device is fixed on the connecting bottom plate 202, that is, the driving motor 6 and the worm and gear speed reducer 7 are arranged on the connecting bottom plate 202. The driving motor controller 8 is fixed at the ends of the two connecting vertical plates 201. The relay 9 is arranged on the outer wall of one of the connecting vertical plates 201. Two connecting shafts 203 are arranged in parallel through the two connecting vertical plates 201. One of the connecting shafts 203 passes through the trimming arm 1 and is movably arranged for rotatably connecting with the trimming arm 1. A rotating pulling arm 204 is rotatably assembled on the other connecting shaft 203. The other end of the rotating pulling arm 204 is rotatably assembled with the pulling oil cylinder 3, so that under the pulling of the pulling oil cylinder 3 and the rotating pulling arm 204, the trimming and pulling seat 2 can rotate at a certain angle along the connecting shaft 203 rotatably assembled with the trimming arm 1. A fixing frame 205 extending outward is further installed on the connecting bottom plate 202. The trigger switch 11 is arranged on the fixing frame 205 to realize the installation and fixation of the trigger switch 11.

[0029] An avoidance connecting device is arranged between the trimming avoidance shaft 4 and the trimming head 5. Wiring through holes 12 for wires to pass through are respectively arranged through the trimming avoidance shaft 4 and the avoidance connecting device. The top end of the trimming avoidance shaft 4 is fixedly connected with a power-on slip ring 13. A power-off slip ring 14 is correspondingly arranged directly below the trimming avoidance shaft 4, and the power-off slip ring 14 is installed on the trimming head 5. Through the wiring through holes 12, the electric energy in the storage battery on the walking vehicle body can be sent to the trimming head 5 through wires. The power-on slip ring 13 and the power-off slip ring 14 are arranged to adapt to the rotation of relevant rotating parts, so as to prevent the wires from being twisted due to rotation, protect the wires, and realize the stable and reliable power supply of the trimming head 5. The power-on slip ring 13 and the power-off slip ring 14 are both slip rings, which are electrical components well-known to those of ordinary skill in the art and will not be described in detail here.

[0030] In this embodiment, a protective sleeve 15 is detachably installed at the top of the avoidance shaft driving device. The protective sleeve 15 is sleeved on the outer perimeters of the power-on slip ring 13 and the trimming avoidance shaft 4. Specifically, the protective sleeve 15 can be arranged at the top of the worm gearbox 7 to protect the trimming avoidance shaft 4 and the power-on slip ring 13, and at the same time can play roles such as dust-proof and waterproof. A hollow fixed sleeve 16 is fixedly installed on the trimming head 5. The power-off slip ring 14 is fixed at the top of the fixed sleeve 16. A wiring notch for the wire to pass through is arranged at the bottom end of the fixed sleeve 16. The installation and support of the power-off slip ring 14 are realized through the fixed sleeve 16, and the wire is led out through the wiring notch to realize the electrical connection of the trimming head 5.

[0031] The avoidance connection device includes a shaft disc 17 fixedly connected to the bottom end of the trimming avoidance shaft 4. An active clamping disc 18 is abutted against the top end of the shaft disc 17. The active clamping disc 18 is sleeved on the outer perimeter of the trimming avoidance shaft 4. A fixed clamping disc 19 is fixedly installed on the trimming head 5 directly below the shaft disc 17. A clamping bolt 20 is arranged and connected between the fixed clamping disc 19 and the active clamping disc 18. Wiring through holes 12 are respectively arranged through the shaft disc 17 and the fixed clamping disc 19. The wire is led to the trimming head 5 through the wiring through holes 12. In this embodiment, nuts for matching use can be arranged on the surface of the fixed clamping disc 19 corresponding to the clamping bolts 20 to increase the firmness of the assembly with the clamping bolts 20. Through the clamping bolts 20, the clamping force of the active clamping disc 18 and the fixed clamping disc 19 on the shaft disc 17 can be adjusted, so as to adjust the damping between adjacent discs, achieve the adjustment of the driving force strength of the trimming head 5, and at the same time can play a certain buffering role when colliding with an obstacle, which helps to protect the trimming avoidance shaft 4 and the power mechanism connected thereto. For example, if the clamping force on the shaft disc 17 is increased, the trimming head 5 can be driven to rotate only when the collision intensity of the obstacle against the trimming head 5 is relatively large; for example, if the clamping force on the shaft disc 17 is relaxed and reduced, the trimming head 5 can be driven to rotate when the collision intensity of the obstacle against the trimming head 5 is relatively small. The trimming avoidance shaft 4 and the shaft disc 17 can be set as an integral structure with high strength and capable of bearing a large torque. The active clamping disc 18 can be set as a semi-circular disc structure composed of two parts that hold the outside of the trimming avoidance shaft 4, which is more convenient for assembly.

[0032] The trimming head 5 includes a head enclosure plate 21 in the shape of a cuboid with openings at both the upper and lower ends. A head cover 22 is detachably provided at the top end of the head enclosure plate 21, and a rubber retaining ring 23 is fixedly connected to the bottom end to prevent debris from splashing and dust from rising during trimming operations. Inside the head enclosure plate 21, a head connecting frame 24 and a motor fixing plate 25 are fixedly arranged in sequence from top to bottom. A trimming motor controller 26 is fixedly arranged on the head connecting frame 24. At the top end of the motor fixing plate 25, a trimming motor 27 is fixedly arranged. The trimming motor 27 is correspondingly connected to the trimming motor controller 26 one by one. At the bottom end of the motor fixing plate 25, a trimming knife 28 correspondingly connected to each trimming motor 27 is arranged. Among them, the head connecting frame 24 can be set relatively small, and it can accommodate and install each trimming motor controller 26 and the fixed clip tray 19, and is fixed on the inner wall of the head enclosure plate 21 through several support arms, so as to minimize the weight of the entire trimming head 5. The periphery of the motor fixing plate 25 needs to be hermetically connected to the inner wall of the head enclosure plate 21 to prevent the debris and dust generated during trimming from rising, so as to achieve the cleanliness of the installation space of the trimming motor controller 26 under the cooperation of the head cover 22. A remote controller can be provided in cooperation with each trimming motor controller 26 to remotely control the trimming motor 27, which can reduce wiring to a certain extent and facilitate controlling the start of an appropriate number of trimming motors 27 according to the width of the trimmed green plants, so as to achieve the purpose of saving electric energy.

[0033] As Figure 5 shown, the head cover 22 includes two relatively arranged cover half bodies 221. A semi-circular avoidance notch 222 for the trimming avoidance shaft 4 to pass through is formed at the docking end of the two cover half bodies 221, and the trigger 10 is arranged at the top end of the corresponding cover half body 221.

[0034] As Figure 6 shown, the working process of this embodiment is as follows. For the convenience of description, the two ends of the trimming head 5 are marked as end A and end B in the figure. Specifically:

[0035] Taking Figure 6Taking the view direction as an example, during the normal trimming process, the A end of the trimming head 5 is on the left and the B end is on the right. At this time, the trigger switch 11 contacts the corresponding trigger 10, the circuit of the drive motor 6 is disconnected, and the trimming head 5 stops rotating. When the trimming head 5 encounters an obstacle D, as the green plant trimming machine moves forward, a certain resistance will be generated under the blockage of the obstacle D. When this resistance can overcome the clamping force of the movable clamping disc 18 and the fixed clamping disc 19 on the shaft disc 17, it can push the trimming head 5 to rotate, so that the trigger switch 11 at the A end of the trimming head 5 is separated from the trigger 10. At this time, the drive motor controller 8 and the relay 9 cooperate according to the signal of the trigger switch 11 to make the drive motor 6 energized. Under the cooperation of the worm and worm gear transmission 7, the trimming avoidance shaft 4 is driven to rotate, and under the clamping action of the movable clamping disc 18 and the fixed clamping disc 19, the trimming head 5 is driven to rotate until the trigger switch 11 contacts the trigger 10 at the B end of the trimming head 5. The drive motor controller 8 and the relay 9 cooperate to cut off the power supply of the drive motor 6, and the trimming head 5 then stops rotating. During this process, the trimming head 5 completes a 180° rotation, realizing the avoidance of the obstacle D. Similarly, when the green plant trimming machine trims the green plants on the other side, the trimming arm 1 will be located above the B end of the trimming head 5. At this time, when there is an obstacle at the A end of the trimming head 5, the avoidance can also be completed according to the above process.

[0036] The description of the present invention has been given for purposes of illustration and description, and is not intended to be exhaustive or to limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, and to enable others of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. The avoidance type green plant trimming mechanism is rotationally connected to the trimming arm of the green plant trimming machine and includes a trimming pulling seat, characterized in that: A trimming avoidance shaft is rotatably installed through the trimming and pulling seat, and an avoidance shaft driving device that is transmission-connected to the trimming avoidance shaft is fixedly installed on the trimming and pulling seat. The avoidance shaft driving device is connected to an avoidance control device for use in conjunction with it. A trimming machine head is provided below the trimming and pulling seat, and an avoidance connecting device is provided between the trimming avoidance shaft and the trimming machine head. Wiring through holes for wires to pass through are respectively provided through the trimming avoidance shaft and the avoidance connecting device. An upper electric slip ring is fixedly connected to the top end of the trimming avoidance shaft, and a lower electric slip ring is correspondingly provided directly below the trimming avoidance shaft, and the lower electric slip ring is installed on the trimming machine head.

2. The avoidance type green plant pruning mechanism according to claim 1, wherein: The trimming and pulling seat is arranged in the upper middle part of the trimming machine head, and the avoidance control device includes two triggers fixedly installed on the top of the trimming machine head, and the two triggers are arranged opposite to each other on both sides of the trimming and pulling seat, and a trigger switch used in conjunction with the trigger is fixedly installed on the trimming and pulling seat, and the two triggers and the trigger switch are respectively connected to the avoidance shaft driving device.

3. The avoidance type green plant pruning mechanism according to claim 2, characterized in that: The avoidance shaft drive device includes a drive motor fixedly mounted on the trimming and pulling seat, a power output end of the drive motor is connected to a worm gearbox, the worm gearbox is transmission-connected to the trimming and avoidance shaft, and also includes a drive motor controller and a relay for controlling the start and stop of the drive motor, and the trigger switch is connected to the drive motor controller.

4. The avoidance-type green plant pruning mechanism according to claim 1, characterized in that: The avoidance connection device includes a shaft disk fixedly connected to the bottom end of the trimming avoidance shaft, the top of the shaft disk is abutted against a movable clamping disk, the movable clamping disk is sleeved on the outer circumference of the trimming avoidance shaft, a fixed clamping disk is fixedly installed on the trimmer head directly below the shaft disk, a clamping bolt is arranged and connected between the fixed clamping disk and the movable clamping disk, and the wiring through holes are respectively provided through the shaft disk and the fixed clamping disk.

5. The avoidance-type green plant pruning mechanism according to claim 1, wherein: A protective sleeve is detachably mounted on the top of the avoidance shaft driving device, and the protective sleeve is sleeved on the outer circumference of the upper electrical slip ring and the trimming avoidance shaft.

6. The avoidance type green plant pruning mechanism according to claim 1, characterized in that: A hollow fixed sleeve is fixedly mounted on the trimmer head, the lower electric slip ring is fixed to the top of the fixed sleeve, and a wiring recess for a wire to pass through is arranged at the bottom of the fixed sleeve.

7. The avoidance type green plant trimming mechanism according to claim 2, wherein: The trimming head includes a head panel in a rectangular shape with openings at both ends, a head cover is detachably provided at the top of the head panel, a head connecting frame and a motor fixing plate are sequentially fixed in the head panel, a trimming motor controller is arranged and fixed on the head connecting frame, a trimming motor is arranged and fixed on the top of the motor fixing plate, the trimming motor is connected to the trimming motor controller in a one-to-one correspondence, and a trimming knife connected to each trimming motor is arranged at the bottom of the motor fixing plate.

8. The avoidance type green plant pruning mechanism according to claim 7, wherein: The machine head cover comprises two relatively arranged cover halves, the butt ends of the two cover halves are formed with semicircular avoidance recesses for facilitating the passage of the trimming avoidance axis, and the trigger is arranged at the top end of the corresponding cover half.

9. The avoidance type green plant pruning mechanism according to claim 2, wherein: The trimming and pulling seat includes two oppositely arranged connecting vertical plates, a connecting bottom plate is fixed between the two connecting vertical plates, the avoidance shaft driving device is fixed on the connecting bottom plate, two connecting shafts are arranged in parallel through the two connecting vertical plates, one of the connecting shafts penetrates through the trimming arm and is movably arranged, and a rotating pulling arm is rotatably assembled on the other connecting shaft.

10. The avoidance type green plant trimming mechanism according to claim 9, wherein: A fixing frame extending outward is further installed on the connecting bottom plate, and the trigger switch is arranged on the fixing frame.

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