Tree spraying device for municipal greening

Abstract

The invention discloses a tree spraying device for municipal greening, and particularly relates to the technical field of municipal greening, the tree spraying device comprises a trailer, a mounting base is fixed at the upper end of the trailer, a liquid medicine box is fixed at the rear part of the upper end of the mounting base, and a water pump connected with the liquid medicine box is fixed at the upper end of the mounting base; a fine adjustment device is arranged on the front side of the upper end of the mounting base, a control device is arranged at the upper end of the trailer and comprises a first transmission rack sliding at the upper end of the mounting base, a telescopic air cylinder is fixed to the right end of the first transmission rack, and a mounting plate is fixed to the output end of the telescopic air cylinder; two first horizontal sliding grooves are symmetrically formed in the right end of the mounting plate, a second transmission rack is fixed to the upper end of the mounting plate, and a triggering mechanism is arranged at the right end of the mounting plate. According to the tree spraying device for municipal greening, the design of the control device is adopted, the working efficiency is improved, and operation of the device is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of municipal greening, and in particular to a tree spraying device for municipal greening. Background Art

[0002] Urban greening is the activity of planting plants to improve the urban environment, mainly to improve the quality of living environment of urban residents. Urban greening refers to planting trees, grass and flowers in the city, covering or decorating a certain ground. In order to prevent the trees in the city from being eaten, damaged and frostbitten by insects, ants, diseases, etc., operators generally need to whitewash the tree trunks to protect the trees.

[0003] Chinese patent document CN114405714A discloses a tree spraying device for municipal greening, belonging to the field of municipal greening equipment, which includes a base, a material storage barrel for containing materials arranged on the base, universal wheels are arranged at the four corners of the bottom surface of the base, a mounting platform is arranged on the base, a spraying assembly is arranged on the mounting platform, the spraying assembly includes a connecting plate arranged on the mounting platform, a first arc plate fixedly connected to the connecting plate, and a second arc plate hinged to the first arc plate, the first arc plate and the second arc plate are both provided with a plurality of nozzles for spraying materials, and the first arc plate is provided with a driving assembly for driving the second arc plate to rotate. This application has the effect of improving the working efficiency of the tree spraying device.

[0004] However, the device cannot continuously spray trees beside the road when in use, and the device needs to be moved manually for multiple times to spray trees beside the road, which reduces the working efficiency of the device. In addition, the device also needs to be adjusted when encountering a curved road, which is inconvenient to operate the device. Summary of the invention

[0005] The main purpose of the present invention is to provide a tree spraying device for municipal greening, which can effectively solve the problems of reduced working efficiency of the device and inconvenient operation of the device.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: A tree spraying device for municipal greening, comprising a trailer, a mounting base is fixed on the upper end of the trailer, a liquid medicine box is fixed to the rear of the upper end of the mounting base, a water pump connected to the liquid medicine box is fixed on the upper end of the mounting base, a fine-tuning device is provided on the front side of the upper end of the mounting base, and a control device is provided on the upper end of the trailer; The control device includes a transmission rack 1 sliding on the upper end of the mounting base, a telescopic cylinder is fixed to the right end of the transmission rack 1, a mounting plate is fixed to the output end of the telescopic cylinder, two horizontal slide grooves 1 are symmetrically provided at the right end of the mounting plate, a transmission rack 2 is fixed to the upper end of the mounting plate, and a trigger mechanism is provided at the right end of the mounting plate.

[0007] Preferably, the trigger mechanism includes a device shell, two support rods are fixed to the left end of the device shell, and the two support rods slide in the two horizontal slide grooves, respectively, and the front end of the support rod is fixed with a return spring fixedly connected to the inner cavity of the horizontal slide groove, and the front and rear ends of the device shell are fixed with a support frame, and the upper ends of the two support frames slide together with an inner toothed ring with a notch, and a spray pipe is connected between the clockwise side of the upper end of the inner toothed ring and the output end of the water pump, and a transmission gear 1 meshing with the transmission rack 2 is rotatably installed on the upper end of the device shell, and a transmission gear 2 meshing with the inner toothed ring is fixed on the upper end of the transmission gear 2; A transmission gear three meshing with the inner gear ring is provided at the upper end of the device shell, a trigger rod is rotated in the inner cavity of the device shell, and a torsion spring is provided at the rotation connection between the trigger rod and the device shell, and a guiding mechanism for limiting the trigger rod is provided in the inner cavity of the device shell.

[0008] Preferably, the transmission gear three is connected to the transmission gear two via a belt, and the internal gear ring is always meshed with the transmission gear two or the transmission gear three.

[0009] Preferably, when the torsion spring is in a natural state, the trigger rod and the mounting plate are perpendicular to each other.

[0010] Preferably, the guiding mechanism comprises a second spring telescopic rod, a guiding rod being fixed to a side of the output end of the second spring telescopic rod close to the mounting plate, and the guiding rod passing through the device housing, a guiding groove being provided at one end of the mounting plate close to the device housing, and the guiding rod sliding in the guiding groove, the guiding groove being composed of a second horizontal slide groove and an inclined slide groove, and the inclined slide groove being located at the rear of the second horizontal slide groove.

[0011] Preferably, when the spring telescopic rod 2 is in a natural state, the output end of the spring telescopic rod 2 is in contact with the trigger rod, and the trigger rod cannot rotate.

[0012] Preferably, when the guide rod is located at the lowest point of the inclined slide groove, the output end of the second spring telescopic rod does not limit the trigger rod, and the trigger rod can rotate.

[0013] Preferably, the fine-tuning device includes a support frame 2 fixed to the upper end of the mounting base, a transmission gear 4 rotatably engaged with the transmission rack 1 is rotatably provided at the rear end of the support frame 2, a through groove is provided at the upper end of the mounting base located in front of the support frame 2, a spring telescopic rod 1 is rotatably provided in the inner cavity of the through groove, a pulley connected to the fourth axis of the transmission gear is rotatably provided at the front end of the support frame 2, a transmission belt is connected between the rotation connection of the spring telescopic rod 1 and the pulley, and a transmission wheel is rotatably provided at the output end of the spring telescopic rod 1.

[0014] Preferably, the transmission wheel is installed front and back, and when the spring telescopic rod is in a natural state, it is perpendicular to the mounting base.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention adopts the design of a control device, and through the arrangement of the mutual cooperation between the mounting plate and the device shell, when the tree limits the trigger rod, the device shell will not move with the movement of the mounting plate. At the same time, due to the design of the mutual cooperation between the transmission rack 2 and the transmission gear 1, the inner gear ring will also rotate, which is convenient for spraying trees. When the device is spraying trees, there is no need to stop the vehicle's forward movement, thereby improving work efficiency. In addition, there is no need for other mechanical structures or manual labor to spray trees, which facilitates the operation of the device.

[0016] The present invention adopts the design of a fine-tuning device. Through the design of the mutual cooperation between the transmission wheel and the spring telescopic rod 1, the spring telescopic rod 1 can be rotated when the device is turning. At the same time, the mutual cooperation between the transmission gear 4 and the transmission rack 1 can further allow the control device to move left or right, which is convenient for the device to spray trees. When the device needs to turn due to poor road conditions, the device does not need to stop running or spray trees at the turning point separately, which is convenient for the operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a partial structural schematic diagram of the control device of the present invention; Figure 3 For the present invention Figure 2 The enlarged view of point A in the middle; Figure 4 The structure diagram of the trigger mechanism of the present invention is shown in FIG. Figure 1 ; Figure 5 The structure diagram of the trigger mechanism of the present invention is shown in FIG. Figure 2 ; Figure 6 For the present invention Figure 5 The enlarged view of point B in the middle; Figure 7 It is a structural schematic diagram of the fine-tuning device of the present invention; Figure 8 The structure diagram of the device of the present invention when it is working Figure 1 ; Fig. 9 For the present invention Figure 8 Enlarged view of point C in the middle; Fig.10 The structure diagram of the device of the present invention when it is working Figure 2 .

[0018] In the figure: 1. trailer; 2. fine-tuning device; 3. control device; 11. mounting base; 12. liquid medicine box; 13. water pump; 21. support frame 2; 22. transmission gear 4; 23. through slot; 24. spring telescopic rod 1; 25. pulley; 26. transmission wheel; 31. transmission rack 1; 32. telescopic cylinder; 33. mounting plate; 34. horizontal slide 1; 35. transmission rack 2; 36. trigger mechanism; 361. device housing; 362. support rod; 363. support frame 1; 364. inner gear ring; 365. transmission gear 1; 366. transmission gear 2; 367. transmission gear 3; 368. trigger rod; 37. guide mechanism; 371. spring telescopic rod 2; 372. guide rod; 373. horizontal slide 2; 374. inclined slide. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods. Embodiment 1

[0020] like Figure 1 As shown, a tree spraying device for municipal greening includes a trailer 1. The trailer 1 is a prior art. The device can be driven to move by connecting to a car. A mounting base 11 is fixed on the upper end of the trailer 1. A liquid medicine box 12 is fixed to the rear of the upper end of the mounting base 11. The liquid medicine box 12 is used to store liquid medicine to be sprayed on trees. A water pump 13 connected to the liquid medicine box 12 is fixed on the upper end of the mounting base 11. The water pump 13 is a prior art. Its mounting method and control method are both conventional designs in the prior art, so the present invention will not repeat them. The water pump 13 is used to spray the liquid medicine in the liquid medicine box 12 onto the trees. A fine-tuning device 2 is provided on the front side of the upper end of the mounting base 11, and a control device 3 is provided on the upper end of the trailer 1. In order to ensure that the device does not need to stop moving when encountering trees during operation, the trees can be sprayed to improve the working efficiency of the device, such as Figure 2 and Figure 3As shown, the control device 3 includes a transmission rack 31 sliding on the upper end of the mounting base 11. The transmission rack 31 can allow the control device 3 to move rightward or leftward as a whole, so that the control device 3 can more conveniently spray the tree with liquid medicine. A telescopic cylinder 32 is fixed to the right end of the transmission rack 31, and a mounting plate 33 is fixed to the output end of the telescopic cylinder 32. Two horizontal slide grooves 34 are symmetrically provided at the right end of the mounting plate 33. A transmission rack 35 is fixed to the upper end of the mounting plate 33, and a trigger mechanism 36 is provided at the right end of the mounting plate 33.

[0021] like Figure 4 As shown, the trigger mechanism 36 includes a device housing 361, two support rods 362 are fixed to the left end of the device housing 361, and the two support rods 362 slide in two horizontal slide grooves 34 respectively, and a reset spring fixedly connected to the inner cavity of the horizontal slide groove 34 is fixed to the front end of the support rod 362, and the reset spring is used to reset the device housing 361, and support frames 363 are fixed to the front and rear ends of the device housing 361. The upper ends of the two support frames 363 slide together with an inner toothed ring 364 with a notch, and the two support frames 363 are used to support the inner toothed ring 364. A spray pipe is connected between the clockwise side of the upper end of the inner gear ring 364 and the output end of the water pump 13. At the same time, the water pump 13 is controlled so that the water pump 13 is started when the inner gear ring 364 rotates, and the liquid medicine in the liquid medicine box 12 can be sprayed on the trees. A transmission gear 1 365 meshing with the transmission rack 2 35 is rotatably installed on the upper end of the device shell 361, so that when the device shell 361 moves forward or backward relative to the mounting plate 33, the transmission gear 1 365 can rotate through the meshing transmission gear 1 365 with the transmission rack 2 35.

[0022] In addition, a transmission gear 2 366 meshing with the inner gear ring 364 is fixed on the upper end of the transmission gear 2 366, so that when the transmission gear 1 365 rotates, the transmission gear 2 366 can also rotate. At the same time, the transmission gear 2 366 meshes with the inner gear ring 364, so that the inner gear ring 364 can also rotate. A transmission gear 3 367 meshing with the inner gear ring 364 is provided on the upper end of the device housing 361, and the transmission gear 3 367 is connected to the transmission gear 2 366 through a belt, so that when the transmission gear 2 366 rotates, the transmission gear 3 367 can also rotate, and the inner gear ring 364 is always meshed with the transmission gear two 366 or the transmission gear three 367, which further enables the inner gear ring 364 to rotate when the transmission gear one 365 rotates, and also prevents the inner gear ring 364 from not meshing with the transmission gear two 366 or the transmission gear three 367, thereby affecting the normal operation of the device. A trigger rod 368 is rotated in the inner cavity of the device housing 361, and a torsion spring is provided at the rotation connection between the trigger rod 368 and the device housing 361, and the torsion spring is used to reset the trigger rod 368.

[0023] Specifically, when the torsion spring is in a natural state, the trigger rod 368 and the mounting plate 33 are perpendicular to each other. When the trigger rod 368 is perpendicular to the mounting plate 33 and the device is also moving forward, the trigger rod 368 cooperates with the tree. Due to the limitation of the trigger rod 368 by the tree, the mounting plate 33 moves forward, but the device housing 361 does not move forward. The inner cavity of the device housing 361 is provided with a guide mechanism 37 for limiting the trigger rod 368. The guide mechanism 37 is used to limit the trigger rod 368 so that the trigger rod 368 does not rotate.

[0024] When the mounting plate 33 moves forward relative to the device housing 361, the transmission gear 1 365 rotates through the cooperation with the transmission rack 2 35. At the same time, due to the mutual meshing between the transmission gear 2 366 and the transmission gear 3 367 and the inner gear ring 364, the inner gear ring 364 rotates above the support frame 1 363. When the inner gear ring 364 rotates, the liquid in the liquid tank 12 can be sprayed onto the trees through the spray pipe connected between the inner gear ring 364 and the output end of the water pump 13.

[0025] The guiding mechanism 37 comprises a second spring telescopic rod 371. When the second spring telescopic rod 371 is in a natural state, the trigger rod 368 cannot rotate. When the output end of the second spring telescopic rod 371 contacts the trigger rod 368, the trigger rod 368 can rotate. A guiding rod 372 is fixed to the side of the output end of the second spring telescopic rod 371 close to the mounting plate 33, and the guiding rod 372 passes through the device housing 361. A guiding groove is provided at one end of the mounting plate 33 close to the device housing 361, and the guiding rod 372 slides in the guiding groove. The guiding groove cooperates with the guiding rod 372 to control the output end of the second spring telescopic rod 371 to slide up and down. The guiding groove is composed of a second horizontal slide groove 373 and an inclined slide groove 374. The inclined slide groove 374 is located at the rear of the second horizontal slide groove 373.

[0026] When the guide rod 372 is located in the horizontal slide groove 373, the output end of the spring telescopic rod 371 limits the trigger rod 368, further preventing the trigger rod 368 from rotating. When the guide rod 372 is located at the lowest point of the inclined slide groove 374, the output end of the spring telescopic rod 371 does not limit the trigger rod 368, so that the trigger rod 368 can rotate. When the guide rod 372 slides to the bottom of the inclined slide groove 374 (that is, the output end of the spring telescopic rod 371 does not limit the trigger rod 368), since the output end of the spring telescopic rod 371 does not limit the trigger rod 368, the device adopts a reset spring design, and the reset spring pulls the support rod 362 to allow the device housing 361 to move forward relative to the mounting plate 33. Fig.10As shown, since the tree limits the trigger rod 368, the trigger rod 368 is further rotated, which facilitates the forward movement of the device housing 361. When the device housing 361 moves forward, the transmission rack 2 35 cooperates with the transmission gear 1 365, and also allows the inner gear ring 364 to reset, which facilitates the spraying of the tree.

[0027] The specific implementation of this embodiment is as follows: when the device is used, the medicine required to be used is firstly added into the medicine liquid box 12, and then the telescopic cylinder 32 is controlled to extend, and the device is driven forward by the vehicle, such as Figure 8 and Fig. 9 As shown, when the trigger rod 368 contacts the tree and the device continues to move forward, the trigger rod 368 is limited by the tree and the spring telescopic rod 2 371 limits the trigger rod 368, so that the trigger rod 368 cannot rotate, and further when the mounting plate 33 moves forward, the device housing 361 will not move forward; When the mounting plate 33 moves forward relative to the device housing 361, the transmission gear 1 365 rotates by cooperating with the transmission rack 2 35. At the same time, due to the mutual meshing between the transmission gear 2 366 and the transmission gear 3 367 and the inner gear ring 364, the inner gear ring 364 rotates above the support frame 1 363. When the inner gear ring 364 rotates, the liquid in the liquid tank 12 can be sprayed onto the trees through the spray pipe connected between the inner gear ring 364 and the output end of the water pump 13. At the same time, the guide rod 372 also slides to the side close to the inclined slide groove 374. When the guide rod 372 slides to the bottom of the inclined slide groove 374 (that is, the output end of the spring telescopic rod 371 does not limit the trigger rod 368), since the output end of the spring telescopic rod 371 does not limit the trigger rod 368, the device adopts a reset spring design, and the reset spring pulls the support rod 362 to move the device housing 361 forward relative to the mounting plate 33. Fig.10 As shown, since the tree limits the trigger rod 368, the trigger rod 368 is further rotated, which facilitates the forward movement of the device housing 361. When the device housing 361 moves forward, the transmission rack 2 35 cooperates with the transmission gear 1 365, and also allows the inner gear ring 364 to reset, which facilitates the spraying of the tree. Example

[0028] This embodiment further improves the fine-tuning device 2 on the basis of the first embodiment, so that when the device needs to turn due to bad road conditions, the device does not need to stop running or spray trees at the turning point separately, which facilitates the operation of the device.

[0029] like Figure 3 and Figure 7 As shown, the fine-tuning device 2 includes a support frame 21 fixed to the upper end of the mounting base 11, and a transmission gear 4 22 meshing with a transmission rack 1 31 is rotatably provided at the rear end of the support frame 21. The transmission gear 4 22 meshes with the transmission rack 1 31, so that when the transmission gear 4 22 rotates, the transmission rack 1 31 can slide left and right, and further enables the control device 3 to slide left or right as a whole. A through groove 23 is provided at the front of the support frame 21 at the upper end of the mounting base 11, and a spring telescopic rod 1 24 is rotatably provided in the inner cavity of the through groove 23. The rotation direction of the spring telescopic rod 1 24 is related to the turning angle of the vehicle. The greater the turning angle, the greater the rotation angle of the spring telescopic rod 24, that is, the greater the distance the control device 3 moves to the left or right.

[0030] In addition, a pulley 25 connected to the axis of the transmission gear four 22 is rotatably mounted at the front end of the support frame two 21, and a transmission belt is connected between the rotation connection of the spring telescopic rod one 24 and the pulley 25, so that the spring telescopic rod one 24 can rotate the transmission gear four 22 when it is tilted, and further the control device 3 moves left or right, and a transmission wheel 26 is rotatably mounted on the output end of the spring telescopic rod one 24, and the transmission wheel 26 is installed front and back. When the spring telescopic rod one 24 is in a natural state, it itself is perpendicular to the mounting base 11, and the transmission wheel 26 mainly plays a guiding role. Since the transmission wheel 26 is installed front and back, the device can rotate the spring telescopic rod one 24 when turning, and further rotate the transmission gear four 22.

[0031] The specific implementation of this embodiment is as follows: when the device is in use, the transmission wheel 26 is first brought into contact with the ground, and then the transmission rack 31 is adjusted to a position convenient for spraying trees. When the vehicle turns, the transmission wheel 26 cooperates with the spring telescopic rod 24 to rotate the spring telescopic rod 24. At the same time, the control device 3 slides to the left or right through the cooperation between the transmission gear 22 and the transmission rack 31. The rotation direction of the spring telescopic rod 24 is related to the turning angle of the vehicle. The greater the turning angle, the greater the rotation angle of the spring telescopic rod 24, that is, the greater the distance the control device 3 moves to the left or right, which enables the control device 3 to better spray the trees.

[0032] It should be noted that the specific installation methods, circuit connection methods and control methods of the trailer 1, water pump 13, telescopic cylinder 32, etc. in the present invention are all conventional designs and will not be elaborated in detail in the present invention.

[0033] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A tree spraying device for municipal greening, comprising a trailer (1), characterized in that: A mounting base (11) is fixed to the upper end of the trailer (1), a liquid medicine tank (12) is fixed to the rear of the upper end of the mounting base (11), a water pump (13) connected to the liquid medicine tank (12) is fixed to the upper end of the mounting base (11), a fine-tuning device (2) is provided on the front side of the upper end of the mounting base (11), and a control device (3) is provided at the upper end of the trailer (1); The control device (3) comprises a transmission rack (31) sliding on the upper end of the mounting base (11), a telescopic cylinder (32) being fixed to the right end of the transmission rack (31), a mounting plate (33) being fixed to the output end of the telescopic cylinder (32), two horizontal slide grooves (34) being symmetrically provided at the right end of the mounting plate (33), a transmission rack (35) being fixed to the upper end of the mounting plate (33), and a trigger mechanism (36) being provided at the right end of the mounting plate (33).

2. A tree spraying device for municipal greening according to claim 1, characterized in that: The trigger mechanism (36) comprises a device housing (361), two support rods (362) are fixed to the left end of the device housing (361), and the two support rods (362) slide in the two horizontal slide grooves (34) respectively, and the front end of the support rod (362) is fixed with a return spring fixedly connected to the inner cavity of the horizontal slide groove (34), and the front and rear ends of the device housing (361) are fixed with a support frame (363), and the upper ends of the two support frames (363) slide together with an inner toothed ring (364) with a notch, and a spray pipe is connected between the clockwise side of the upper end of the inner toothed ring (364) and the output end of the water pump (13), and the upper end of the device housing (361) is rotatably mounted with a transmission gear (365) meshing with the transmission rack (35), and the upper end of the transmission gear (366) is fixed with a transmission gear (366) meshing with the inner toothed ring (364); A transmission gear 3 (367) meshing with the inner gear ring (364) is provided at the upper end of the device housing (361); a trigger rod (368) is rotatably disposed in the inner cavity of the device housing (361); a torsion spring is disposed at the rotational connection between the trigger rod (368) and the device housing (361); and a guide mechanism (37) for limiting the position of the trigger rod (368) is disposed in the inner cavity of the device housing (361).

3. A tree spraying device for municipal greening according to claim 2, characterized in that: The transmission gear three (367) is connected to the transmission gear two (366) via a belt, and the inner gear ring (364) is always meshed with the transmission gear two (366) or the transmission gear three (367).

4. The tree spraying device for municipal greening according to claim 2 is characterized in that: When the torsion spring is in a natural state, the trigger rod (368) and the mounting plate (33) are perpendicular to each other.

5. The tree spraying device for municipal greening according to claim 2 is characterized in that: The guide mechanism (37) comprises a second spring telescopic rod (371), a guide rod (372) being fixed to a side of the output end of the second spring telescopic rod (371) close to the mounting plate (33), and the guide rod (372) passing through the device housing (361), a guide groove being provided at one end of the mounting plate (33) close to the device housing (361), and the guide rod (372) sliding in the guide groove, the guide groove being composed of a second horizontal slide groove (373) and an inclined slide groove (374), and the inclined slide groove (374) being located at the rear of the second horizontal slide groove (373).

6. The tree spraying device for municipal greening according to claim 5 is characterized in that: When the second spring telescopic rod (371) is in a natural state, the output end of the second spring telescopic rod (371) contacts the trigger rod (368), and the trigger rod (368) cannot rotate.

7. The tree spraying device for municipal greening according to claim 6 is characterized by: When the guide rod (372) is located at the lowest point of the inclined slide groove (374), the output end of the second spring telescopic rod (371) does not limit the trigger rod (368), and the trigger rod (368) can rotate.

8. The tree spraying device for municipal greening according to claim 1 is characterized by: The fine-tuning device (2) comprises a support frame 2 (21) fixed to the upper end of the mounting base (11); a transmission gear 4 (22) meshing with the transmission rack 1 (31) is rotatably mounted at the rear end of the support frame 2 (21); a through slot (23) is provided at the upper end of the mounting base (11) and located in front of the support frame 2 (21); a spring telescopic rod 1 (24) is rotatably mounted in the inner cavity of the through slot (23); a belt pulley (25) connected to the shaft of the transmission gear 4 (22) is rotatably mounted at the front end of the support frame 2 (21); a transmission belt is connected between the rotation connection of the spring telescopic rod 1 (24) and the belt pulley (25); and a transmission wheel (26) is rotatably mounted at the output end of the spring telescopic rod 1 (24).

9. The tree spraying device for municipal greening according to claim 8, characterized in that: The transmission wheel (26) is installed front and back, and when the spring telescopic rod (24) is in a natural state, it and the installation base (11) are perpendicular to each other.

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