Maintenance device for vegetation in median zone of road

Abstract

The invention discloses a highway zoning vegetation maintenance device, which comprises a walking mechanism, the walking mechanism comprises a portal frame, and the portal frame comprises two vertically arranged stand columns and a cross beam connected between the two stand columns; the pruning mechanism comprises a horizontal pruning part connected to the lower end of the cross beam, and a branch and leaf collecting part and a lateral pruning part which are connected to the stand column; the irrigation mechanism comprises water storage tanks located on the front side and the rear side of the stand column, and the water storage tanks are connected with a plurality of pressure compensation type drippers through communicating pipes; the auxiliary mechanism is arranged at the starting point or the ending point of the walking mechanism and comprises a water storage pond, and a branch and leaf storage box is arranged at the upper end of the water storage pond. Precise maintenance and efficient irrigation for greening of the medial strip can be achieved, the safety, the working efficiency and the operation quality of greening maintenance can be improved, the labor cost can be reduced, water saving and environmental protection can be achieved, and powerful support is provided for highway greening and ecological environmental protection.

Description

Technical Field

[0001] The invention relates to the technical field of highway vegetation maintenance, and in particular to a highway median strip vegetation maintenance device. Background Art

[0002] With the rapid development of my country's highway network, the greening of the central median strip of highways has become an important measure to enhance road landscape, ensure driving safety, and improve the ecological environment. However, the maintenance and irrigation of the central median strip face a series of challenges: 1. Irrigation problems: Traditional irrigation methods, such as sprinkler trucks and manual flooding, are not only labor-intensive and costly, but also inefficient and prone to waste of water resources. In addition, these methods may occupy lanes during irrigation, affecting traffic flow and even posing safety hazards.

[0003] 2. Difficulty in maintenance: The maintenance workload of greening in the central median is large, especially in sections with heavy traffic and high safety risks. Manual maintenance is not only inefficient, but also poses a high safety risk. In addition, the central median has a small space and mechanized operations are limited, resulting in high maintenance costs and difficulty in achieving refined management.

[0004] In summary, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Summary of the invention

[0005] In view of the above technical problems in the related art, the present invention provides a highway median vegetation maintenance device that can solve the above problems.

[0006] To achieve the above technical objectives, the technical solution of the present invention is implemented as follows: A highway median vegetation maintenance device, comprising: A walking mechanism, wherein the walking mechanism comprises a gantry, wherein the gantry comprises two vertically arranged columns and a crossbeam connected between the two columns, and a walking wheel is arranged at the bottom end of the gantry; A pruning mechanism, the pruning mechanism comprising a horizontal pruning portion connected to the lower end of the crossbeam, a branch and leaf collecting portion connected to the upright column, and a lateral pruning portion; An irrigation mechanism, the irrigation mechanism comprising a water tank located at the front and rear sides of the column, the water tank being connected to a plurality of pressure-compensating drippers through a connecting pipe, and the pressure-compensating drippers extending to the roots of the green plants through a dripper bracket; An auxiliary mechanism is arranged at the starting point or end point of the walking mechanism, and the auxiliary mechanism includes a water tank, a branch and leaf storage box is provided at the upper end of the water tank, the water tank is connected to a water supply pipe for replenishing water to the water tank, the end of the water supply pipe is connected to a water injection self-locking mechanism, and the branch and leaf storage box is provided with a branch and leaf transportation pipeline for recovering branches and leaves in the branch and leaf collecting part.

[0007] Furthermore, the walking mechanism also includes a correction unit connected to the outer end of the column, the correction unit includes a guardrail clamping part, the guardrail clamping part is connected to the column through an elastic member, and the guardrail clamping part is provided with a guardrail slide groove for connecting the center belt guardrail.

[0008] Furthermore, the branch and leaf collection part includes a temporary storage box, a lateral collection trough, and a horizontal pruning leaf suction channel; the temporary storage box is arranged on the column, the lateral collection trough is arranged at the bottom of the lateral pruning part and is connected to the temporary storage box, the top of the horizontal pruning leaf suction channel is connected to the horizontal pruning part, and the bottom of the horizontal pruning leaf suction channel is connected to the temporary storage box.

[0009] Furthermore, the horizontal trimming part includes a moving part, the lower end of which is connected to an auger-type trimming blade, the upper end of which is connected to a support frame via a second driving component, and the support frame is installed in a second installation groove on the crossbeam.

[0010] Furthermore, a second protective cover is provided at the upper end of the auger-type trimming blade, a suction blade assembly is connected to the upper end of the second protective cover, and a suction blade end of the suction blade assembly passes through the second protective cover and faces the auger-type trimming blade.

[0011] Furthermore, the lateral trimming part includes a lifting frame, the upper end of the lifting frame is connected to a support plate, the inner side of the support plate is connected to a horizontal trimming mechanism, the horizontal trimming mechanism includes a driving component connected to the support plate, the rotating shaft of the driving component is connected to a trimming piece, and the lifting frame and the support plate are both installed in a first installation groove on the inner side of the column.

[0012] Furthermore, a first protective cover is provided on a rotating side cover of the trimming member, one end of the first protective cover is fixedly connected to the support plate, and the trimming member is a trimming blade or a trimming rope.

[0013] Furthermore, the dripper brackets are symmetrically installed on the inner side of the gantry, the dripper brackets on the same side are evenly distributed on the same straight line, and a water pump is installed in the water tank.

[0014] Furthermore, the water injection self-locking mechanism includes a water inlet, a primary water flow pool, a secondary water flow pool and a water outlet in sequence along the water flow direction, wherein a floating valve is arranged on the top of the primary water flow pool, a self-locking part is arranged on the top of the secondary water flow pool, the bottom of the self-locking part is located in the secondary water flow pool, the top of the self-locking part extends outward and is connected to the lever shaft, a blocking ball is arranged on the other end of the lever shaft, the blocking ball is arranged in the pipe between the primary water flow pool and the secondary water flow pool, and the pipe between the primary water flow pool and the secondary water flow pool also includes a reducing section, and a secondary valve is arranged in the pipe of the reducing section.

[0015] Furthermore, the auxiliary valve includes a blocking block and a flow plate, the blocking block is slidably connected to the small diameter of the variable diameter section, the flow plate is fixedly connected to the large diameter of the variable diameter section, a plurality of flow holes are arranged on the flow plate, and a compression spring is arranged between the blocking block and the flow plate.

[0016] Beneficial effects of the invention: The present application can realize precise maintenance and efficient irrigation of the greening of the central dividing strip, which can not only improve the safety, work efficiency and operation quality of greening maintenance and reduce labor costs, but also achieve water saving and environmental protection, and provide strong support for highway greening and ecological environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] The present invention will be described in further detail below with reference to the accompanying drawings.

[0019] Figure 1 It is a structural schematic diagram of a highway median vegetation maintenance device according to an embodiment of the present invention; Figure 2 is a schematic structural diagram of the connection between the walking mechanism and the trimming mechanism according to an embodiment of the present invention; Figure 3 is a schematic structural diagram of a lateral trimming portion according to an embodiment of the present invention; Figure 4 is a schematic structural diagram of a correction unit according to an embodiment of the present invention; Figure 5 is a schematic diagram of the internal structure of the lateral trimming portion according to an embodiment of the present invention; Figure 6 is a schematic structural diagram of a horizontal trimming portion according to an embodiment of the present invention; Figure 7is a schematic structural diagram of a pressure-compensating dripper according to an embodiment of the present invention; Figure 8 It is a schematic diagram of the structure of the water storage tank and the branch and leaf storage box according to an embodiment of the present invention; Fig. 9 It is a structural schematic diagram of the water injection self-locking mechanism according to an embodiment of the present invention; Fig.10 is a cross-sectional view of the self-locking member according to an embodiment of the present invention; Fig.11 is a schematic diagram of the connection between the air pipe and the water injection self-locking mechanism according to an embodiment of the present invention; Fig.12 is a schematic structural diagram of a secondary valve according to an embodiment of the present invention; Fig.13 It is a structural schematic diagram of the upper main board and the lower scanning board described in an embodiment of the present invention.

[0020] In the figure: 101, gantry; 102, crossbeam; 103, column; 111, walking wheel; 112, axle; 113, warning light; 114, hyperspectral camera; 115, deviation correction unit; 116, elastic member; 117, guardrail clamping part; 201, storage box; 202, lateral collection tank; 204, branch and leaf output pipeline; 205, leaf suction assembly; 206, lateral trimming part; 207, lifting frame; 208, support plate; 209, support shaft; 210, rotating shaft; 211, trimming part; 212, first protective cover; 213, horizontal trimming part; 214, moving part; 215, support frame; 216, second protective cover; 217, auger type trimming blade; 301, water storage tank; 302, connecting pipe; 303, drip head bracket; 304, pressure replenishment Compensatory dripper; 401, water storage tank; 402, water supply pipe; 403, vertical bracket; 404, water injection self-locking mechanism; 405, water inlet; 406, primary water flow pool; 407, floating valve; 408, auxiliary valve; 4081, blocking block; 4082, flow plate; 4083, compression spring; 409, flow rate sensor; 410, secondary water flow pool; 411, self-locking member; 4111, first sliding block; 4112, second sliding block; 4113, sealing frame; 412, lever shaft; 413, blocking ball; 414, air pipe; 4141, first connecting port; 4142, second connecting port; 4143, third connecting port; 415, water outlet; 416, branch and leaf storage box; 417, branch and leaf transportation pipeline; 418, upper main board; 419, lower sweeping plate. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0022] like Figure 1-13 As shown, according to the present invention, a highway median vegetation maintenance device is disclosed, which includes a walking mechanism, a pruning mechanism, an irrigation mechanism, and an auxiliary mechanism.

[0023] The walking mechanism in the present application includes a gantry 101, and a walking wheel 111 is arranged at the bottom of the gantry 101. The gantry 101 is used to cover the outside of the green plants. The gantry 101 includes two vertically arranged columns 103 and a crossbeam 102 connected between the two columns 103.

[0024] The travel wheels 111 described in the present application are arranged at the bottom of the gantry 101. In a specific embodiment, four groups of travel wheels 111 are arranged, and each group of travel wheels 111 includes four wheels and two axles 112. Each group of travel wheels 111 is controlled to move and turn by a servo motor, and the direction, distance and speed of travel are precisely controlled by the servo motor, so as to ensure that the travel mechanism can move stably and efficiently, and improve its working efficiency and operation accuracy.

[0025] In a specific embodiment, Figure 2 , Figure 4 As shown, the walking mechanism of the present application also includes a correction unit 115, and the correction unit 115 includes an elastic member 116 and a guardrail clamping portion 117. The elastic member 116 is connected between the guardrail clamping portion 117 and the column 103. The guardrail clamping portion 117 is used to connect with the center dividing belt guardrail and slide along the center dividing belt guardrail. When the walking mechanism cannot walk according to the established route and there is an error in the travel, the guardrail clamping portion 117 is used to limit the moving path. It should be noted that a correction unit 115 is set on the outside of each column 103, and the elastic member 116 is a high-strength spring.

[0026] In a specific embodiment, warning lights 113 are provided on the front and rear sides of the gantry 101 , and the warning lights 113 are used to flash to warn passing vehicles and staff when the device is working.

[0027] In a specific embodiment, a hyperspectral camera 114 is disposed on the column 103 , and the hyperspectral camera 114 is used to obtain information on plant diseases and insect pests along the way and monitor excessive growth of branches and leaves, and send the information to the terminal.

[0028] The pruning mechanism in the present application includes a branch and leaf collection unit, a lateral pruning unit 206 and a horizontal pruning unit 213. The lateral pruning unit 206 is located inside the column 103 and is used to prune the two sides of the green plants. The horizontal pruning unit 213 is located at the lower end of the beam 102 and is used to prune the top of the green plants. The branch and leaf collection unit is used to collect the pruned leaves. In a specific embodiment, as Figure 3 and Figure 5 As shown, the branch and leaf collection section includes a temporary storage box 201, a lateral collection trough 202, and a horizontal pruning leaf suction channel. The temporary storage box 201 is provided on the column 103, and is used to store fallen branches and leaves. The lateral collection trough 202 is provided at the bottom of the lateral pruning section 206, and the lateral collection trough 202 is used to collect branches and leaves pruned by the lateral pruning section 206. The horizontal pruning leaf suction channel is connected to the horizontal pruning section 213, and is used to transport branches and leaves pruned by the horizontal pruning section 213.

[0029] It should be noted that a leaf suction assembly 205 is provided at the horizontal pruning portion 213, and the leaf suction assembly 205 is used to suck the pruned branches and leaves into the horizontal pruning leaf suction channel.

[0030] The lateral collecting trough 202 of the present application is arranged on the side of the temporary storage box 201 and is connected to the temporary storage box 201. The top of the horizontal trimming leaf suction channel is the leaf inlet, which is connected to the horizontal trimming part 213, and the bottom of the horizontal trimming leaf suction channel is connected to the temporary storage box 201.

[0031] It should be noted that the upper portion of the lateral collecting tank 202 is open, and the bottom of the lateral collecting tank 202 is connected to the temporary storage box 201 .

[0032] In a specific embodiment, Figure 5 As shown, the lateral trimming unit 206 includes a lifting frame 207, a support plate 208, a support shaft 209, a rotating shaft 210, and a trimming member 211. A first mounting groove is provided on the inner side of the column 103, and the lifting frame 207 and the support plate 208 are both installed in the first mounting groove. The top of the lifting frame 207 is fixedly connected to the bottom of the support plate 208, and the lifting frame 207 controls the support plate 208 to move up and down, so as to control the lateral trimming unit 206 to trim green plants of different heights. A driving component 1 for driving the rotating shaft 210 is provided at the inner side end of the support plate 208, and a support shaft 209 is provided on the inner side of the driving component 1. The rotating shaft 210 is inserted in the support shaft 209, and a trimming member 211 is provided at the end of the rotating shaft 210. The trimming member 211 is controlled by the rotating shaft 210 to perform rotation trimming. It should be noted that the trimming member 211 is a trimming blade or a trimming rope.

[0033] In a specific embodiment, a first protective cover 212 is provided on the rotating side of the trimming member 211, and one end of the first protective cover 212 is fixedly connected to the support plate 208. The first protective cover 212 is used to intercept branches and leaves thrown away by the centrifugal force generated by the trimming member 211 during operation, and make the branches and leaves fall into the lateral collection groove 202, and at the same time, it can also play a role in rain protection, thereby extending the service life of the device.

[0034] In a specific embodiment, Figure 2 and Figure 6 As shown, the horizontal trimming section 213 includes a moving member 214, a support frame 215, and an auger-type trimming blade 217. A second mounting groove is provided on the bottom surface of the crossbeam 102, and the top of the support frame 215 is fixedly connected to the second mounting groove. The arrangement direction of the support frame 215 is the same as the arrangement direction of the crossbeam 102. The moving member 214 is connected to the bottom of the support frame 215 through a second driving component, and the bottom of the moving member 214 is connected to the auger-type trimming blade 217. The moving member 214 can move along the arrangement direction of the support frame 215 (driven by the second driving component), thereby controlling the auger-type trimming blade 217 to reciprocate in the horizontal direction to trim the top of the green plants. Through the arrangement of the auger-type trimming blade 217, the redundant branches and leaves above the green plants can be trimmed into smaller debris, which helps the leaf suction component 205 to suck and collect the leaves. A second protective cover 216 is provided on the upper end of the auger type trimming blade 217, and the second protective cover 216 is used to catch the blades thrown out during trimming.

[0035] The irrigation mechanism of the present application includes a water tank 301, a connecting pipe 302, a pressure-compensating dripper 304 and a dripper bracket 303. The connecting pipe 302 is used to transport the water in the water tank 301 to the pressure-compensating dripper 304. A plurality of dripper brackets 303 are arranged on the inner side of the gantry 101, and the end of each dripper bracket 303 extends to the root of the green plant. A pressure-compensating dripper 304 is arranged at the end of the dripper bracket 303. Through the arrangement of the irrigation mechanism, the device can irrigate the green plants during the pruning process. The dripper brackets 303 are symmetrically installed on the inner side of the gantry 101, and the dripper brackets 303 on the same side are evenly distributed on the same straight line.

[0036] In a specific embodiment, a plurality of water tanks 301 may be provided on the gantry 101, and the plurality of water tanks 301 are symmetrically arranged to store water required for drip irrigation. A water pump is installed inside the water tank 301 to ensure the working pressure of the pressure-type compensation dripper.

[0037] The auxiliary mechanism of the present application is arranged at the starting point or the end point of the walking mechanism, including a water storage tank 401, a branch and leaf storage box 416 and a control unit, such as Figure 1As shown, the water tank 401 is connected to the water supply pipe 402, and the branch and leaf storage box 416 is connected to the branch and leaf transportation pipe 417. When the walking mechanism moves to the auxiliary mechanism, the water tank 401 is connected to the water tank 301 through the water supply pipe 402, and at this time, the branches and leaves in the temporary storage box 201 are connected to the branch and leaf storage box 416 through the branch and leaf transportation pipe 417, and the branches and leaves are discharged into the branch and leaf storage box 416 for unified processing.

[0038] In a specific embodiment, a water pump is provided between the water tank 401 and the water supply pipe 402; the water pump is used to replenish water to the water tank 301 of the gantry 101. The end of the water supply pipe 402 is connected to a water injection self-locking mechanism 404, and a vertical bracket 403 is provided at the bottom of the water supply pipe 402, and the water supply pipe 402 is fixed by the vertical bracket 403. The water injection self-locking mechanism 404 is connected to the control unit for communication.

[0039] The water injection self-locking mechanism 404 includes a water inlet 405, a primary water flow pool 406, a secondary water flow pool 410 and a water outlet 415 in sequence along the water flow direction. A floating valve 407 is arranged on the top of the primary water flow pool 406. When the water pump is turned on to supply water, the water flow in the pipe gradually increases. When the water flow in the pipe reaches a predetermined height, the floating valve 407 is lifted and the water flows through. After the water supply is completed and the water pump is turned off, the water flow height in the pipe drops and the floating valve 407 drops accordingly, so that the primary water flow pool 406 is closed to prevent the water flow in the pipe before the primary water flow pool 406 from continuing to flow out.

[0040] like Fig. 9 As shown, a self-locking member 411 is provided at the top of the secondary water flow pool 410, the bottom of the self-locking member 411 is provided in the secondary water flow pool 410, the top of the self-locking member 411 extends outward and is connected to a lever shaft 412, a blocking ball 413 is provided at the other end of the lever shaft 412, and the blocking ball 413 is provided in the pipeline between the primary water flow pool 406 and the secondary water flow pool 410; a support rod is provided in the middle of the lever shaft 412. When the water level in the secondary water flow pool 410 rises, the blocking ball 413 is lowered through the lever shaft 412 to close the pipeline between the primary water flow pool 406 and the secondary water flow pool 410.

[0041] The pipeline between the primary water flow pool 406 and the secondary water flow pool 410 also includes a reducing section, and a secondary valve 408 is arranged in the reducing pipe. Fig.12As shown, the auxiliary valve 408 includes a blocking block 4081 and a flow plate 4082. The blocking block 4081 is slidably connected to the small diameter of the variable diameter section, and the flow plate 4082 is fixedly connected to the large diameter of the variable diameter section. A plurality of flow holes are arranged on the flow plate 4082. Under the normal state, the auxiliary valve 408 is pressed toward the small diameter end by the force of the compression spring 4083 to close the pipeline between the primary water flow pool 406 and the secondary water flow pool 410. When the water pressure in the primary water flow pool 406 is greater than the pressure of the compression spring 4083, the blocking block 4081 moves toward the large diameter end, and the water flows out through the flow plate 4082.

[0042] In a specific embodiment, a flow rate sensor 409 is provided in the pipeline between the primary water flow pool and the auxiliary valve 408 . The flow rate sensor 409 is in communication connection with the control unit, and the control unit controls the opening and closing of the water pump according to the flow rate obtained by the flow rate sensor 409 .

[0043] Specifically, when the flow rate is less than a predetermined value, the control unit controls the water pump to stop supplying water.

[0044] An air pipe 414 is arranged outside the water injection self-locking mechanism 404. Fig.11 As shown, the air pipe 414 includes a first connection port 4141, a second connection port 4142 and a third connection port 4143. The first connection port 4141 is connected to the water outlet 415, the second connection port 4142 is connected to the top of the secondary water flow pool 410, and the third connection port 4143 is connected to the pipeline where the auxiliary valve 408 is located.

[0045] An opening is set at the top of the secondary water flow pool 410, and the self-locking part 411 includes a first sliding block 4111 arranged in the opening, the top of the first sliding block 4111 is connected to the lever shaft 412, a sealing frame is set below the opening, the second connecting port is connected to the sealing frame 4113, and the second sliding block 4112 is set at the bottom of the sealing frame, and the first sliding block 4111 and the second sliding block 4112 are coaxially arranged.

[0046] When supplying water to the water storage tank 301 , when the water flow in the pipe reaches a predetermined pressure, the compression spring 4083 is compressed, and the blocking block 4081 moves toward the water outlet 415 , and the water flow can be normally supplied through the pipe where the auxiliary valve 408 is located.

[0047] When the water supply is completed, the water level at the water outlet 415 increases. Through the setting of the air pipe 414, the first connection port 4141 is sealed. Under the action of the Venturi effect, a negative pressure is formed in the sealing frame 4113 connected to the second connection port. The second sliding block 4112 slides upward and pushes the first sliding block 4111. The first sliding block 4111 pushes up one end of the lever shaft 412, thereby driving the blocking ball 413 at the other end of the lever shaft to fall, and the flow rate in the pipeline is reduced. After the flow rate sensor 409 detects that the water flow is less than a predetermined value, the water pump is turned off to achieve that when the water level in the water tank 301 rises to a predetermined height, the water pump is automatically turned off to prevent water from overflowing from the water tank 301, thereby achieving self-locking of the pipeline.

[0048] It should be noted that the branch and leaf storage box 416 is installed above the water tank 401 so that the branch and leaf storage box 416 is exposed on the ground, so the branch and leaf storage box 416 can be opened from the top to facilitate cleaning of the collected branches and leaves.

[0049] The branch and leaf transport conduit 417 is symmetrically installed on the front surface of the branch and leaf storage box 416, in an oblique upward state, so that the leaves can slide directly into the branch and leaf storage box 416.

[0050] A branch and leaf output pipe 204 is provided on the temporary storage box 201, and the inlet of the branch and leaf transport pipe 417 is larger than the outlet of the branch and leaf output pipe 204, so as to facilitate the smooth docking of the pipes.

[0051] like Fig.13 As shown, an upper main board 418 and a lower sweeping board 419 are arranged inside the branch and leaf storage box 416 . The upper main board 418 is rotatably connected to the branch and leaf storage box 416 , and the lower sweeping board 419 is arranged at the lower end of the upper main board 418 .

[0052] The lower sweeping plate 419 is installed inside the upper main board 418. In a normal state, the lower sweeping plate 419 is at the lowest point to prevent debris from entering the branch storage box 416 through the branch transport pipe 417.

[0053] When the blades enter through the branch and leaf output pipe 204, the lower sweeping plate 419 is retracted, and after a certain period of time, the upper main plate 418 starts to rotate to ensure that the branches and leaves at the entrance enter the branch and leaf storage box 416 smoothly.

[0054] In summary, this application adopts automation, informationization and intelligent technology to improve maintenance efficiency, reduce labor costs and accident rates, and ensure the healthy growth of green belts. It can achieve precise maintenance and efficient irrigation of central median greening. It can not only improve the safety, work efficiency and operation quality of greening maintenance, reduce labor costs, but also achieve water conservation and environmental protection, and provide strong support for highway greening and ecological environmental protection.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A vegetation maintenance device for a highway median strip, characterized in that: include: A walking mechanism, the walking mechanism comprising a gantry (101), the gantry (101) comprising two vertically arranged columns (103) and a crossbeam (102) connected between the two columns (103), and a walking wheel (111) is provided at the bottom end of the gantry (101); A pruning mechanism, the pruning mechanism comprising a horizontal pruning portion (213) connected to the lower end of the crossbeam (102), a branch and leaf collecting portion and a lateral pruning portion (206) connected to the upright post (103); An irrigation mechanism, the irrigation mechanism comprising a water tank (301) located at the front and rear sides of the column (103), the water tank (301) being connected to a plurality of pressure-compensating drippers (304) via a connecting pipe (302), the pressure-compensating drippers (304) extending to the roots of green plants via dripper brackets (303); An auxiliary mechanism is arranged at the starting point or the end point of the walking mechanism, the auxiliary mechanism comprising a water tank (401), a branch and leaf storage box (416) is provided at the upper end of the water tank (401), the water tank (401) is connected to a water supply pipe (402) for replenishing water to the water tank (301), the end of the water supply pipe (402) is connected to a water injection self-locking mechanism (404), and the branch and leaf storage box (416) is provided with a branch and leaf transportation pipeline (417) for recovering branches and leaves in the branch and leaf collection part.

2. A highway median vegetation maintenance device according to claim 1, characterized in that: The walking mechanism further comprises a deviation correction unit (115) connected to the outer end of the column (103), the deviation correction unit (115) comprising a guardrail clamping portion (117), the guardrail clamping portion (117) being connected to the column (103) via an elastic member (116), and the guardrail clamping portion (117) being provided with a guardrail sliding groove for connecting to a center dividing belt guardrail.

3. A highway median vegetation maintenance device according to claim 1, characterized in that: The branch and leaf collection section comprises a temporary storage box (201), a lateral collection trough (202), and a horizontal pruning leaf suction channel; the temporary storage box (201) is arranged on the upright column (103), the lateral collection trough (202) is arranged at the bottom of the lateral pruning section (206) and is in communication with the temporary storage box (201), the top of the horizontal pruning leaf suction channel is in communication with the horizontal pruning section (213), and the bottom of the horizontal pruning leaf suction channel is in communication with the temporary storage box (201).

4. A highway median vegetation maintenance device according to claim 3, characterized in that: The horizontal trimming portion (213) comprises a moving member (214), the lower end of which is connected to an auger-type trimming blade (217), the upper end of which is connected to a support frame (215) via a second drive assembly, and the support frame (215) is installed in a second installation groove on the crossbeam (102).

5. A highway median vegetation maintenance device according to claim 4, characterized in that: A second protective cover (216) is provided at the upper end of the auger-type trimming blade (217); a leaf suction assembly (205) is connected to the upper end of the second protective cover (216); and a leaf suction end of the leaf suction assembly (205) passes through the second protective cover (216) and faces the auger-type trimming blade (217).

6. A highway median vegetation maintenance device according to claim 5, characterized in that: The lateral trimming section (206) comprises a lifting frame (207), the upper end of the lifting frame (207) is connected to a support plate (208), the inner side of the support plate (208) is connected to a horizontal trimming mechanism, the horizontal trimming mechanism comprises a driving component 1 connected to the support plate (208), the rotating shaft (210) of the driving component 1 is connected to a trimming member (211), and the lifting frame (207) and the support plate (208) are both installed in a first installation groove on the inner side of the column.

7. A highway median vegetation maintenance device according to claim 6, characterized in that: A first protective cover (212) is provided on a rotating side cover of the trimming member (211); one end of the first protective cover (212) is fixedly connected to the support plate (208); and the trimming member (211) is a trimming blade or a trimming rope.

8. The highway median vegetation maintenance device according to claim 1, characterized in that: The dripper brackets (303) are symmetrically mounted on the inner side of the gantry (101); the dripper brackets (303) on the same side are evenly distributed on the same straight line; and a water pump is installed in the water storage tank (301).

9. The highway median vegetation maintenance device according to claim 1, characterized in that: The water injection self-locking mechanism (404) comprises a water inlet (405), a primary water flow pool (406), a secondary water flow pool (410) and a water outlet (415) in sequence along the water flow direction, wherein a floating valve (407) is arranged at the top of the primary water flow pool (406), a self-locking member (411) is arranged at the top of the secondary water flow pool (410), the bottom of the self-locking member (411) is located in the secondary water flow pool (410), the top of the self-locking member (411) protrudes outward and is connected to a lever shaft (412), a blocking ball (413) is arranged at the other end of the lever shaft (412), and the blocking ball (413) is arranged in a pipe between the primary water flow pool (406) and the secondary water flow pool (410), and the pipe between the primary water flow pool (406) and the secondary water flow pool (410) also comprises a reducing section, and a secondary valve (408) is arranged in the pipe of the reducing section.

10. A highway median vegetation maintenance device according to claim 9, characterized in that: The auxiliary valve (408) comprises a blocking block (4081) and a flow plate (4082), wherein the blocking block (4081) is slidably connected to the small diameter of the reducing section, and the flow plate (4082) is fixedly connected to the large diameter of the reducing section. A plurality of flow holes are arranged on the flow plate (4082), and a compression spring (4083) is arranged between the blocking block (4081) and the flow plate (4082).

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