Comprehensive trimming vehicle for road greening

Abstract

The utility model provides a comprehensive trimming vehicle for road greening, which relates to the field of greening equipment, comprises a vehicle frame and a roadside grass trimming device assembly connected to the vehicle frame, and is characterized in that the roadside grass trimming device assembly comprises a roadside grass trimming head, the roadside grass trimming head is connected to a fixed base through a first connecting arm assembly, and the fixed base is fixedly connected with the vehicle frame; the device further comprises at least one of a side slope grass mowing device assembly and a hedge trimming device assembly, the side slope grass mowing device assembly comprises a side slope grass mowing head, and the side slope grass mowing head is connected to the first sliding base through a second connecting arm assembly; the hedge trimming device assembly comprises a hedge trimming head, and the hedge trimming head is connected to the second sliding base through a third connecting arm assembly; the multifunctional grass trimmer integrates the functions of at least two working heads, roadside grass trimming or side slope grass trimming or hedge trimming can be independently carried out according to actual needs, or simultaneous operation is carried out, secondary operation is avoided, the overall structural layout is more reasonable, and mutual influence among working device assemblies is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of greening equipment, in particular to a highway greening comprehensive pruning vehicle. Background Art

[0002] As the number and mileage of highways continue to increase, the area of ​​roadside slope protection and central hedgerows is also increasing. These slope protection vegetation and central hedgerows require frequent pruning and beautification. Currently, there are two main methods for pruning highway slope protection vegetation and central hedgerows. One method is manual pruning, which requires significant manpower and financial resources and is prone to traffic accidents. The other method is to use mowers and trimmers. However, existing mowers and trimmers are limited in functionality, only able to trim the side slopes or central hedges individually, or their trimming heads are not adjustable, limiting their ability to trim vegetation to a single standard, resulting in low efficiency. Utility Model Content

[0003] The utility model provides an integrated highway greening and comprehensive pruning vehicle in order to solve the above problems existing in the prior art.

[0004] The utility model provides a technical solution to the above-mentioned technical problem as follows: a highway greening integrated mowing vehicle, comprising a vehicle frame having a traveling system and a roadside mowing device assembly connected to the vehicle frame, wherein the roadside mowing device assembly comprises a roadside mowing head, the roadside mowing head being connected to a fixed base via a first connecting arm assembly, and the fixed base being fixedly connected to the vehicle frame;

[0005] It also includes at least one of a slope grass trimming device assembly and a hedge trimming device assembly, wherein:

[0006] The slope mowing device assembly includes a slope mowing head, which is connected to a first sliding base through a second connecting arm assembly. The first sliding base is slidably connected to a first linear slide rail. The first sliding base is connected to a first sliding drive that drives it to slide along the first linear slide rail. The first linear slide rail is fixedly connected to the vehicle frame.

[0007] The hedge trimming device assembly includes a hedge trimming head, which is connected to a second sliding base through a third connecting arm assembly. The second sliding base is slidably connected to a second linear slide rail. The second linear slide rail is connected to a second sliding drive that drives it to slide along the second linear slide rail. The second linear slide rail is fixedly connected to the vehicle frame.

[0008] Furthermore, the first connecting arm assembly is connected to the front of the vehicle frame, and the first connecting arm assembly includes a swivel support, a first-section arm, a second-section arm, and a swivel hanger; the swivel support is fixed to the fixed base, and the swivel support is rotatably connected to the first swivel shaft, and the first swivel shaft and the swivel support are connected to the first swivel drive for driving the swivel shaft to rotate; one end of the first-section arm is fixed to the first swivel shaft, and the other end is connected to the second-section arm; the second-section arm is connected to the swivel hanger through the second swivel shaft, and the swivel hanger and the second-section arm are connected to the second swivel drive for driving the swivel hanger to rotate around the axis of the second swivel shaft; the swivel hanger is fixedly connected to the roadside mowing head through the mowing head connecting frame, the mowing head connecting frame is hingedly connected to the swivel hanger, and a horizontal adjustment drive for driving the mowing head connecting frame to rotate around the hinge axis with the swivel hanger is connected between the swivel hanger and the mowing head connecting frame.

[0009] Furthermore, the one-section arm includes an arm mounting seat and two parallel single arms, the arm mounting seat is fixed to the first rotating shaft, the two ends of the single arm are respectively hinged to the arm mounting seat and the two-section arm, the middle parts of the two single arms are connected by a connecting rod, the connecting rod is respectively hinged to the two single arms, and a lifting drive for driving the two-section arm to rise and fall is connected between the connecting rod and the first rotating shaft.

[0010] Furthermore, the second connecting arm assembly is connected to the front part of the frame, and the second connecting arm assembly includes a fixed arm fixed to the first sliding base, a multi-section movable arm hinged to the top of the fixed arm and hinged in sequence, and a slope mowing head connected to the last section movable arm through a slewing mechanism. A telescopic drive is connected between the fixed arm and the first section movable arm for driving the relative rotation of the two.

[0011] Furthermore, the movable arm is hinged to a side of the fixed arm close to the first connecting arm assembly, and the multi-section movable arm extends to the outside of the first connecting arm assembly when in an unfolded state.

[0012] Furthermore, the slewing mechanism includes a sprocket mechanism and a telescopic cylinder arranged in the end section boom, the sprocket mechanism includes a first sprocket, a second sprocket and a chain transmitted therebetween, the first sprocket and the second sprocket are both rotatably connected to the end section boom, the chain is a disconnected chain structure, which has two free ends, and a space is reserved between the two free ends for accommodating the telescopic cylinder; the telescopic cylinder is arranged between the two free ends and the axial direction of the telescopic cylinder is the same as the length direction of the chain, the telescopic cylinder is a bidirectional telescopic cylinder structure, the cylinder barrel of the telescopic cylinder is fixed to the end section boom, one telescopic end of the telescopic cylinder is connected to one free end of the chain, and the other telescopic end of the telescopic cylinder is connected to the other free end of the chain; a connecting flange is provided on the outside of the end section boom, close to the end of the slope mowing head, and the slope mowing head is fixed to the second sprocket through the connecting flange.

[0013] Furthermore, the first sliding drive is installed on the first sliding base, the rotary output shaft of the first sliding drive is coaxially fixedly connected to the driving gear, and a rack meshing with the driving gear is fixedly provided on the side of the first linear slide rail.

[0014] Furthermore, the second sliding drive is installed on the second sliding base, the rotation output shaft of the second sliding drive is coaxially fixedly connected to the driving gear, and a rack meshing with the driving gear is fixedly provided on the side of the second linear slide rail.

[0015] Furthermore, the third connecting arm assembly is connected to the rear part of the frame, and the third connecting arm assembly includes a fixed column fixed to the second sliding base and a multi-section movable arm hinged in sequence on the side of the top of the fixed column. The hedge trimming head is connected to the end of the last section of the movable arm through a swivel joint, and a telescopic drive is connected between the fixed column and the first section of the movable arm and between adjacent movable arms to drive the relative rotation of the two.

[0016] Furthermore, the hedge trimmer head includes a housing and a hedge cutter assembly connected to the housing, and the output side of the hedge cutter assembly is further provided with a conveyor belt connected to the housing.

[0017] The beneficial effects of the present invention are as follows: the present invention can realize the integration of at least two working head functions by arranging a roadside grass trimming device assembly, and at least one of a slope grass trimming device assembly and a hedge trimming device assembly on one machine at the same time, and can implement roadside grass trimming or slope grass trimming or hedge trimming separately according to actual needs, and can also use roadside grass trimming and slope cleaning to process weeds on highway guardrails and highway slope protection at the same time, avoiding secondary operations, and having stronger practicality and a more reasonable overall structural layout, avoiding mutual influence between the working device assemblies and not affecting the transfer of the entire machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of an embodiment of the utility model;

[0019] Figure 2 This is a structural diagram of a grass trimming device assembly according to an embodiment of the present invention;

[0020] Figure 3 This is a partial cross-sectional structural diagram of a roadside grass trimmer head according to an embodiment of the present utility model;

[0021] Figure 4 This is a schematic structural diagram of a slope grass trimming device assembly according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic cross-sectional view of a rotary mechanism according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic structural diagram of a hedge trimmer assembly on a vehicle frame according to an embodiment of the present invention;

[0024] Figure 7 This is a schematic structural diagram of a hedge trimming device assembly according to an embodiment of the present invention;

[0025] Figure 8 This is a schematic cross-sectional view of the first sliding drive and the first linear slide rail in one embodiment of the present invention;

[0026] Figure 9 It is a structural diagram of an embodiment of the present invention in a working state.

[0027] In the figure: 1. Frame, 2. Roadside mowing device assembly, 21. Roadside mowing head, 22. Fixed base, 231. Rotary support, 232. First arm, 2321. Arm mounting base, 2322. Single arm, 2323. Connecting rod, 233. Second arm, 234. Rotary hanger, 235. First rotary axis, 236. First rotary drive, 237. Second rotary axis, 238. Second rotary drive, 239. Mowing head connecting frame, 2310. Horizontal adjustment drive, 2311. Lifting drive, 3. Slope mowing device assembly, 31. Slope mowing head, 32. First sliding base, 33. First linear slide Rail, 34. First sliding drive, 341. Drive gear, 342. Rack, 351. Fixed arm, 352. Moving arm, 353. Telescopic drive, 3541. First sprocket, 3542. Second sprocket, 3543. Chain, 3544. Telescopic cylinder, 3545. Connecting flange, 4. Hedge trimmer assembly, 41. Hedge trimmer head, 411. Housing, 412. Hedge cutter assembly, 413. Conveyor belt, 42. Second sliding base, 43. Second linear slide rail, 44. Second sliding drive, 45. Third connecting arm assembly, 451. Fixed column, 452. Movable arm, 46. Rotary joint. DETAILED DESCRIPTION

[0028] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0029] The highway greening and integrated mowing vehicle described in the present utility model includes a frame 1 having a travel system and a roadside mowing device assembly 2 connected to the frame 1. It also includes at least one of a slope mowing device assembly 3 and a hedge trimming device assembly 4. Specifically, in a specific embodiment, the vehicle is presented in three different combinations: the frame 1 is connected to the roadside mowing device assembly 2 and the slope mowing device assembly 3; the frame 1 is connected to the roadside mowing device assembly 2 and the hedge trimming device assembly 4; and the frame 1 is connected to the roadside mowing device assembly 2, the slope mowing device assembly 3, and the hedge trimming device assembly 4. This embodiment uses the third combination as an example.

[0030] As shown in the accompanying drawings, this embodiment provides a comprehensive highway greening and trimming vehicle, which includes a frame 1 with a travel system and a roadside weed trimming device assembly 2, a slope weed trimming device assembly 3, and a hedge trimming device assembly 4 connected to the frame 1. The roadside weed trimming device assembly 2 is mainly used to clear weeds at obstacles such as guardrails on the sides of highways, and the slope weed trimming device assembly 3 is mainly used to clear weeds on the slope surface of highway slope protection. The two can work together or separately. Among them:

[0031] The roadside grass trimming device assembly 2 includes a roadside grass trimming head 21, which is connected to a fixed base 22 via a first connecting arm assembly, and the fixed base 22 is fixedly connected to the vehicle frame 1. In this embodiment, the first connecting arm assembly is connected to the front of the vehicle frame 1, and the first connecting arm assembly includes a swivel support 231, a first-section arm 232, a second-section arm 233, and a swivel hanger 234; the swivel support 231 extends forward and outward from the fixed base 22 and is fixed to the fixed base 22, and the swivel support 231 is rotatably connected to a vertical first swivel shaft 235, and a first swivel drive 236 for driving the first swivel shaft 235 to rotate is connected between the first swivel shaft 235 and the swivel support 231; one end of the first-section arm 232 is fixed to the first swivel shaft 235, and the other end is connected to the second-section arm 233, for controlling the height of the second-section arm 233; the second-section arm 233 is connected to the second swivel shaft 237 is connected to the rotary hanger 234, and a second rotary drive 238 is connected between the rotary hanger 234 and the second arm 233 for driving the rotary hanger 234 to rotate around the axis of the second rotary axis 237; the rotary hanger 234 is fixedly connected to the roadside mowing head 21 through the mowing head connecting frame 239, and the mowing head connecting frame 239 is hingedly connected to the rotary hanger 234, and a horizontal adjustment drive 2310 is connected between the rotary hanger 234 and the mowing head connecting frame 239 for driving the mowing head connecting frame 239 to rotate around the hinge axis between it and the rotary hanger 234, wherein the first rotary drive 236, the second rotary drive 238, and the horizontal adjustment drive 2310 all adopt hydraulic cylinders. During operation, the extension and retraction of the first rotary drive 236 is used to adjust the rotation degree of the first connecting arm assembly as a whole in the horizontal plane, the first arm 232 is used to adjust the height of the second arm 233 at its front end, the second rotary drive 238 is used to adjust the swing angle of the rotary hanger 234 carrying the roadside mowing head 21, and the horizontal adjustment drive 2310 is used to adjust the inclination angle of the roadside mowing head 21 relative to the horizontal plane until the roadside mowing head 21 is adjusted to a suitable working position and angle.

[0032] The side slope mowing device assembly 3 includes a side slope mowing head 31, which is connected to a first sliding base 32 via a second connecting arm assembly. The first sliding base 32 is slidably connected to a first linear slide rail 33. The first sliding base 32 is connected to a first sliding drive 34 that drives it to slide along the first linear slide rail 33. The first linear slide rail 33 is fixedly connected to the fixed base 22 and the vehicle frame 1, and the fixed base 22 is fixedly connected to one end of the first linear slide rail 33. In this embodiment, the second connecting arm assembly is connected to the front of the vehicle frame 1 and includes a fixed arm 351 fixed to the first sliding base 32 and a plurality of hinged movable arms 352 hinged to the top of the fixed arm 351. The side slope mowing head 31 is connected to the end of the last movable arm 352 via a slewing mechanism. A telescopic drive 353 is connected between the fixed arm 351 and the first movable arm 352, as well as between adjacent movable arms 352, for driving relative rotation between the two. Specifically, a hydraulic cylinder can be used. More specifically, the movable arm 352 is hinged to the side of the fixed arm 351 near the first connecting arm assembly. When deployed, the multi-section movable arm 352 extends to the outside of the first connecting arm assembly. The multi-section movable arm 352, in conjunction with the fixed arm 351, allows the slope trimming head 31 to be adjusted to an appropriate distance and tilt angle to accommodate the gradient of the road slope. The slewing mechanism adjusts the fit between the slope trimming head 31 and the road slope surface to facilitate weed removal on the road slope protection. In this embodiment, the first sliding drive 34 is mounted on the first sliding base 32. The first sliding drive 34 utilizes a hydraulic motor, whose rotating output shaft is coaxially fixedly connected to a drive gear 341. The drive gear 341 is rotatably mounted on the first sliding base 32. A rack 342 is fixedly disposed on the side of the first linear slide 33 and meshes with the drive gear 341. The first sliding drive 34 drives the driving gear 341 to rotate around its own axis. Combined with the meshing relationship between the driving gear 341 and the rack 342 and the rack 342 being fixed to the first linear slide rail 33, the first sliding drive 34 drives the first sliding base 32 to slide on the first linear slide rail 33.

[0033] The hedge trimming device assembly 4 includes a hedge trimming head 41, which is connected to a second sliding base 42 via a third connecting arm assembly 45. The second sliding base 42 is slidably connected to a second linear slide rail 43. The second linear slide rail 43 is connected to a second sliding drive 44 that drives it to slide along the second linear slide rail 43. The second linear slide rail 43 is fixedly connected to the vehicle frame 1. In this embodiment, the third connecting arm assembly 45 is connected to the rear portion of the vehicle frame 1 and includes a fixed column 451 fixed to the second sliding base 42 and a plurality of movable arms 452 that are hinged to the top and sides of the fixed column 451 and are hinged in sequence. The hedge trimming head 41 is connected to the end of the last movable arm 452 via a swivel joint 46. A telescopic drive 353 is connected between the fixed column 451 and the first movable arm 452, as well as between adjacent movable arms 452, for driving relative rotation between the two. Specifically, a hydraulic cylinder can be used. In this embodiment, a second sliding drive 44 is mounted on the second sliding base 42. The second sliding drive 44's rotational output shaft is coaxially fixedly connected to a drive gear 341. A rack 342 is fixedly mounted next to the second linear guide rail 43 and meshes with the drive gear 341. The operating principle is similar to that of the first sliding drive 34. The second sliding drive 44 drives the drive gear 341 to rotate about its own axis. This, combined with its meshing relationship with the rack 342 and the fact that the rack 342 is fixed to the first linear guide rail 33, enables the second sliding drive 44 to drive the second sliding base 42 to slide along the second linear guide rail 43.

[0034] In a preferred embodiment of the present invention, an arm section 232 in the first connecting arm assembly includes an arm mounting seat 2321 and two parallel single arms 2322, the arm mounting seat 2321 is fixed to the first rotating shaft 235, the two ends of the single arm 2322 are respectively hinged to the arm mounting seat 2321 and the second arm 233, the middle parts of the two single arms 2322 are connected by a connecting rod 2323, the connecting rod 2323 is respectively hinged to the two single arms 2322, and a lifting drive 2311 for driving the second arm 233 to rise and fall is connected between the connecting rod 2323 and the first rotating shaft 235. The lifting drive 2311 can adopt a hydraulic cylinder, the telescopic end of which is hinged to the end of the connecting rod 2323, and the cylinder barrel is hinged to the first rotating shaft 235. By utilizing the principle of the parallelogram linkage mechanism, the two single arms 2322 are driven to rotate around the hinge axis with the arm mounting seat 2321 through the telescopic movement of the lifting drive 2311, thereby realizing the lifting and lowering of the two-section arm 233 at its front end. The structure is simple and the operation is stable.

[0035] In a preferred embodiment of the present invention, the rotary mechanism connecting the slope mowing head 31 includes a sprocket mechanism and a telescopic cylinder 3544 arranged in the end section movable arm 352, the sprocket mechanism includes a first sprocket 3541, a second sprocket 3542 and a chain 3543 transmitted therebetween, the first sprocket 3541 and the second sprocket 3542 are both rotatably connected to the end section movable arm 352, the chain 3543 is a disconnected chain structure, which has two free ends, and a space is reserved between the two free ends for accommodating the telescopic cylinder 3544; the telescopic cylinder 3544 is arranged between the two free ends. The telescopic cylinder 3544 is a bidirectional telescopic cylinder structure, with its axis oriented along the length of the chain 3543. The cylinder barrel of the telescopic cylinder 3544 is fixed to the end boom 352. One telescopic end of the telescopic cylinder 3544 is connected to one free end of the chain 3543, while the other telescopic end of the telescopic cylinder 3544 is connected to the other free end of the chain 3543. A connecting flange 3545 is provided on the outer side of the end boom 352, near the side slope mowing head 31. The side slope mowing head 31 is secured to the second sprocket 3542 via the connecting flange 3545. During operation, the two telescopic ends of the telescopic cylinder 3544 extend and retract, driving the chain 3543, which in turn drives the two sprockets. This causes the connecting flange 3545, which is fixedly connected to the second sprocket 32, to rotate, thereby enabling the working head connected to the connecting flange 3545 to rotate. In this solution, the telescopic cylinder 3544 is connected between the two free ends 330 of the chain 3543. When the telescopic cylinder 3544 drives the chain 3543 to transmit by extending and retracting the two telescopic ends, the stability of the chain transmission can be guaranteed; the overall structural design is more reasonable, which can solve the problem of excessive volume caused by setting the telescopic cylinder next to the chain, is conducive to the miniaturization design of the overall structure, and is more conducive to the hidden setting of the rotating mechanism inside the last section of the boom 352.

[0036] In a preferred embodiment of the present invention, the hedge trimmer head 41 includes a housing 411 and a hedge cutter assembly 412 connected to the housing 411. A conveyor belt 413 connected to the housing 411 is further provided on the output side of the hedge cutter assembly 412. During hedge trimming, the conveyor belt 413 can uniformly transport the cut branches and leaves to the outside of the hedge green belt for subsequent collection and cleaning.

[0037] When the highway greening integrated pruning vehicle of the present utility model is used for weeding, the specific steps are as follows:

[0038] Step 1: Drive the machine to the roadside guardrail that needs to be trimmed and park it parallel to it at a proper distance.

[0039] Step 2: Control the working hydraulic system through the working operating system to extend the working arm and mowing head of the roadside mowing device, set the height of the mowing head from the ground according to the actual operation requirements, or drop the mowing head limit roller to the ground.

[0040] Step 3: Control the working hydraulic system through the working operating system to extend the working arm and mowing head of the slope mowing device, move the front sliding base to move the weeding head above the slope protection, adjust the lifting cylinders of the arm to adjust the angle of the mowing head to the same as the slope protection angle, set the height of the mowing head from the ground according to the actual operation requirements, and also drop the mowing head limit roller to the slope of the slope protection.

[0041] Step 4: Start the trimming hydraulic motors of each mowing head.

[0042] Step 5: Operate the traveling system to maintain an appropriate distance from the road slope guardrail and perform weeding operations on the entire road slope.

[0043] Among them, according to actual needs, the roadside grass cutting device assembly and the slope grass cutting device assembly can work together or separately. Figure 8 shown.

[0044] When the present invention is used to trim hedges, the specific steps are as follows:

[0045] Step 1: Drive the machine to the hedge that needs to be trimmed and park it parallel to it at a proper distance.

[0046] Step 2: Control the working hydraulic system through the working operating system to extend the working arm and hedge trimming head of the hedge trimming device, move the sliding base to move the hedge trimming head above the hedge belt, and set the trimming angle of the hedge trimming head according to the actual operation requirements.

[0047] Step 3: Start the blade hydraulic motor and conveyor belt hydraulic motor.

[0048] Step 4: Control the walking system to maintain an appropriate distance from the hedge belt and trim the entire hedge belt.

[0049] Among them, the grass trimming device assembly and hedge trimming device assembly of this machine can work at the same time, and if necessary, grass trimming and hedge trimming operations can be performed at the same time.

Claims

1. A highway greening integrated mowing vehicle, comprising a vehicle frame (1) having a travel system and a roadside mowing device assembly (2) connected to the vehicle frame (1), characterized in that: The roadside grass trimming device assembly (2) comprises a roadside grass trimming head (21), the roadside grass trimming head (21) is connected to a fixed base (22) via a first connecting arm assembly, and the fixed base (22) is fixedly connected to the vehicle frame (1); It also includes at least one of a slope grass trimming device assembly (3) and a hedge trimming device assembly (4), wherein: The slope grass trimming device assembly (3) includes a slope grass trimming head (31), the slope grass trimming head (31) is connected to a first sliding base (32) through a second connecting arm assembly, the first sliding base (32) is slidably connected to a first linear slide rail (33), the first sliding base (32) is connected to a first sliding drive (34) for driving it to slide along the first linear slide rail (33), and the first linear slide rail (33) is fixedly connected to the vehicle frame (1); The hedge trimming device assembly (4) comprises a hedge trimming head (41), the hedge trimming head (41) being connected to a second sliding base (42) via a third connecting arm assembly (45), the second sliding base (42) being slidably connected to a second linear slide rail (43), the second linear slide rail (43) being connected to a second sliding drive (44) for driving it to slide along the second linear slide rail (43), and the second linear slide rail (43) being fixedly connected to the vehicle frame (1).

2. The highway greening integrated pruning vehicle according to claim 1, characterized in that: The first connecting arm assembly is connected to the front part of the vehicle frame (1), and the first connecting arm assembly includes a slewing support (231), a first section arm (232), a second section arm (233), and a slewing hanger (234); the slewing support (231) is fixed to the fixed base (22), the slewing support (231) is rotatably connected to a first slewing shaft (235), and a first slewing drive (236) for driving the first slewing shaft (235) to rotate is connected between the first slewing shaft (235) and the slewing support (231); one end of the first section arm (232) is fixed to the first slewing shaft (235), and the other end is connected to the second section arm (233); the second section arm (233) is connected to the second slewing shaft (235) by a second slewing drive (236). The rotating shaft (237) is connected to the rotary hanger (234); a second rotary drive (238) for driving the rotary hanger (234) to rotate around the axis of the second rotary shaft (237) is connected between the rotary hanger (234) and the second-section arm (233); the rotary hanger (234) is fixedly connected to the roadside grass cutting head (21) through the grass cutting head connecting frame (239); the grass cutting head connecting frame (239) is hingedly connected to the rotary hanger (234); a horizontal adjustment drive (2310) for driving the grass cutting head connecting frame (239) to rotate around the hinge axis between the rotary hanger (234) and the grass cutting head connecting frame (239) is connected between the rotary hanger (234) and the grass cutting head connecting frame (239).

3. The highway greening integrated pruning vehicle according to claim 2, characterized in that: The first arm (232) includes an arm mounting seat (2321) and two parallel single arms (2322), the arm mounting seat (2321) is fixed to the first rotary shaft (235), the two ends of the single arm (2322) are respectively hinged to the arm mounting seat (2321) and the second arm (233), the middle parts of the two single arms (2322) are connected by a connecting rod (2323), the connecting rod (2323) is respectively hinged to the two single arms (2322), and a lifting drive (2311) for driving the second arm (233) to rise and fall is connected between the connecting rod (2323) and the first rotary shaft (235).

4. The highway greening integrated pruning vehicle according to claim 1, characterized in that: The second connecting arm assembly is connected to the front of the vehicle frame (1), and comprises a fixed arm (351) fixed to the first sliding base (32) and a plurality of hinged movable arms (352) hinged to the top of the fixed arm (351). The slope mowing head (31) is connected to the end of the last movable arm (352) through a rotary mechanism. A telescopic drive (353) for driving the relative rotation of the fixed arm (351) and the first movable arm (352) and between adjacent movable arms (352) is connected.

5. The highway greening integrated pruning vehicle according to claim 4, characterized in that: The movable arm (352) is hinged to a side of the fixed arm (351) close to the first connecting arm assembly, and the multi-section movable arm (352) extends to the outside of the first connecting arm assembly in an unfolded state.

6. The highway greening integrated pruning vehicle according to claim 4, characterized in that: The rotary mechanism includes a sprocket mechanism and a telescopic cylinder (3544) arranged in the end boom (352); The sprocket mechanism includes a first sprocket (3541), a second sprocket (3542) and a chain (3543) transmitting between the first sprocket (3541) and the second sprocket (3542) are both rotatably connected to the end boom (352). The chain (3543) is a disconnected chain structure having two free ends, and a space is reserved between the two free ends for accommodating the telescopic cylinder (3544). The telescopic cylinder (3544) is arranged between the two free ends, and the axial direction of the telescopic cylinder (3544) is the same as the length direction of the chain (3543). The telescopic cylinder (3544) is a bidirectional telescopic cylinder (3544) structure. The cylinder barrel of the telescopic cylinder (3544) is fixed to the end boom (352). One telescopic end of the telescopic cylinder (3544) is connected to one free end of the chain (3543), and the other telescopic end of the telescopic cylinder (3544) is connected to the other free end of the chain (3543). A connecting flange (3545) is provided on the outer side of the end boom (352) and at one end close to the side slope weeding head (31), and the side slope weeding head (31) is fixed to the second sprocket (3542) via the connecting flange (3545).

7. The highway greening integrated pruning vehicle according to claim 1, characterized in that: The first sliding drive (34) is installed on the first sliding base (32), the rotation output shaft of the first sliding drive (34) is coaxially fixedly connected to the driving gear (341), and a rack (342) meshing with the driving gear (341) is fixedly provided on the side of the first linear slide rail (33).

8. The highway greening integrated pruning vehicle according to claim 1, characterized in that: The second sliding drive (44) is installed on the second sliding base (42), the rotation output shaft of the second sliding drive (44) is coaxially fixedly connected to the driving gear (341), and a rack (342) meshing with the driving gear (341) is fixedly provided on the side of the second linear slide rail (43).

9. The highway greening integrated pruning vehicle according to claim 1, characterized in that: The third connecting arm assembly (45) is connected to the rear of the vehicle frame (1). The third connecting arm assembly (45) includes a fixed column (451) fixed to the second sliding base (42) and a plurality of movable arms (452) hinged to the top side of the fixed column (451) and hinged in sequence. The hedge trimmer head (41) is connected to the end of the last movable arm (452) through a swivel joint (46). A telescopic drive (353) for driving the relative rotation of the fixed column (451) and the first movable arm (452) and between adjacent movable arms (452) is connected.

10. The highway greening integrated pruning vehicle according to claim 1, 8 or 9, characterized in that: The hedge trimmer head (41) comprises a housing (411) and a hedge cutter assembly (412) connected to the housing (411). The output side of the hedge cutter assembly (412) is further provided with a conveyor belt (413) connected to the housing (411).

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