Variable angle highway green belt pruning device

Abstract

The utility model discloses variable angle highway greenbelt pruning device, including horizontal distance adjusting telescopic sleeve, the horizontal distance adjusting telescopic sleeve is inserted with horizontal distance adjusting telescopic pipe, one end of horizontal distance adjusting telescopic pipe is rotatably connected with first swing arm, the other end of first swing arm is rotatably connected with second swing arm, and the rotation axis between first swing arm and horizontal distance adjusting telescopic pipe is perpendicular with the rotation axis between first swing arm and second swing arm, be equipped with mounting seat on second swing arm, and the reciprocating pruning head of mounting seat is installed. The device adopts double hinged arm frame structure, and cooperates with the rotation axis design of mutual perpendicular, realizes the multiple adjustment in pruning direction, and in combination with horizontal telescopic function, can flexible adaptation different width isolation belt vegetation, and the overall structure is simple and compact, through the installation (welding or bolt connection) in the front end of the loader bucket, realizes quick deployment and mechanization operation, and the maintenance efficiency is improved greatly.

Description

Technical Field

[0001] This utility model relates to the technical field of highway greening maintenance equipment, and in particular to a variable-angle highway greening isolation belt trimming device. Background Technology

[0002] The variable-angle highway green belt trimming device is used for mechanized trimming of green belts in the center or on both sides of the road. By adjusting the trimming angle and width, it can adapt to the growth needs of different types of vegetation, improve maintenance efficiency and aesthetics, and is widely used in highways, urban main roads and other scenarios. It is an important tool for achieving standardized and efficient garden management.

[0003] In existing technologies, traditional greening pruning devices are mostly fixed-angle structures, which cannot flexibly adjust the pruning posture according to the slope of the isolation zone or the tilt of the plants, easily causing uneven cutting or missed cutting; and they lack effective obstacle avoidance mechanisms, requiring manual intervention when encountering obstacles such as street light poles and traffic signs, which poses a risk of damaging the blades, resulting in poor work continuity and affecting overall work efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a variable-angle highway greenbelt trimming device to solve the problems mentioned in the background art, such as the inability to adjust the trimming angle, poor obstacle avoidance ability leading to low work efficiency and easy equipment damage.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a variable-angle highway green isolation belt trimming device, comprising a lateral distance adjusting telescopic sleeve, a lateral distance adjusting telescopic tube inserted inside the lateral distance adjusting telescopic sleeve, one end of the lateral distance adjusting telescopic tube being rotatably connected to a first rotating arm, the other end of the first rotating arm being rotatably connected to a second rotating arm, the rotation axis between the first rotating arm and the lateral distance adjusting telescopic tube being perpendicular to the rotation axis between the first rotating arm and the second rotating arm, and a mounting seat being provided on the second rotating arm, on which a reciprocating trimming head is mounted.

[0006] Based on the preferred embodiment of this technical solution, the lateral distance adjusting telescopic sleeve is provided with a number of first through holes, and the lateral distance adjusting telescopic tube is provided with a number of second through holes, so that screws can be inserted when the first through holes and the second through holes overlap.

[0007] Based on the preferred embodiment of this technical solution, the end of the lateral distance adjusting telescopic tube is integrally formed with a first U-shaped block, and the first rotating arm can rotate within the first U-shaped block.

[0008] Based on the preferred embodiment of this technical solution, an angle adjustment disc is bolted to the first U-shaped block. The angle adjustment disc has several slots arranged in a ring. A positioning bolt can be connected to the first rotating arm, and the positioning bolt can fit into one of the slots on the angle adjustment disc.

[0009] In a preferred embodiment of this technical solution, the first rotating arm is provided with a first spring fixing ear, the second rotating arm is provided with a second spring fixing ear, and an obstacle avoidance tension spring is connected to both the first spring fixing ear and the second spring fixing ear.

[0010] In the preferred embodiment of this technical solution, the first rotating arm is connected to one end of the second U-shaped block, and the other end of the second U-shaped block can abut against the second rotating arm. The second U-shaped block is used to prevent the obstacle avoidance tension spring from pulling the first rotating arm and the second rotating arm to over-rotate.

[0011] Based on the preferred embodiment of this technical solution, the mounting base is provided with a T-slot, a slider slides in the T-slot, a blade is integrally formed on the slider, the blade is provided with cutting teeth, and a blade guard is connected to the mounting base by bolts. The blade guard is used to prevent the utility pole from hitting the head of the repair scissors.

[0012] Based on the preferred embodiment of this technical solution, a variable frequency motor is installed on the mounting base. The variable frequency motor is powered by a DC lithium battery. The output end of the variable frequency motor is connected to a cam. The cam can contact one end of the slider. The mounting base is provided with a third spring fixing ear. A fourth spring fixing ear is connected to the blade. A tension spring is connected to both the third and fourth spring fixing ears. The tension spring is used to pull the slider to fit against the cam.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. It adopts a double-hinged boom with an angle adjustment disc to achieve flexible adjustment of the trimming angle. It is also equipped with an obstacle avoidance tension spring and a blade guard linkage mechanism. When encountering obstacles, it can automatically flip over to avoid them and reset, effectively protecting the blade head and ensuring continuous operation capability.

[0014] 2. By setting up a lateral distance adjustment telescopic sleeve and telescopic tube to cooperate with the telescopic tube, combined with a multi-hole locking structure, stepless adjustment and reliable fixation of the trimming width can be achieved, adapting to the needs of isolation strips of different widths, improving the versatility of the equipment, and making the operation simple, which greatly improves the efficiency of on-site deployment. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of an embodiment of the variable-angle highway green isolation belt trimming device of this utility model; Figure 2 This is a schematic diagram of the lateral distance adjustment telescopic tube structure of this utility model; Figure 3 This is a schematic diagram of the angle adjustment disc structure of this utility model; Figure 4 This is a schematic diagram of the second U-shaped block structure of this utility model; Figure 5 This is a schematic diagram of the knife guard structure of this utility model.

[0016] Explanation of reference numerals in the attached drawings: 1. Lateral distance adjustment telescopic sleeve; 11. First perforation; 2. Lateral distance adjustment telescopic tube; 21. Second perforation; 23. First U-shaped block; 3. Angle adjustment disc; 31. Slot; 32. Positioning bolt; 5. Obstacle avoidance tension spring; 61. First rotating arm; 611. First spring fixing ear; 612. Second U-shaped block; 62. Second rotating arm; 621. Second spring fixing ear; 63. Mounting base; 630. T-slot; 631. Third spring fixing ear; 64. Tension spring; 7. Blade guard; 8. Variable frequency motor; 81. Cam; 9. Trimmer head; 91. Blade; 911. Fourth spring fixing ear; 92. Slider. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-5 This utility model provides an embodiment of a variable-angle highway greenbelt trimming device, comprising a lateral distance adjustable telescopic sleeve 1, a lateral distance adjustable telescopic tube 2 inserted inside the lateral distance adjustable telescopic sleeve 1, one end of the lateral distance adjustable telescopic tube 2 being rotatably connected to a first rotating arm 61, and the other end of the first rotating arm 61 being rotatably connected to a second rotating arm 62. The rotation axis between the first rotating arm 61 and the lateral distance adjustable telescopic tube 2 is perpendicular to the rotation axis between the first rotating arm 61 and the second rotating arm 62. A mounting seat 63 is provided on the second rotating arm 62, and a reciprocating trimming scissor head 9 is mounted on the mounting seat 63. This device adopts a double-hinged arm structure, combined with a mutually perpendicular rotation axis design, to achieve multiple adjustments in the trimming direction; combined with the lateral telescopic function, it can flexibly adapt to vegetation in different widths of the isolation belt; the overall structure is simple and compact, and by installation (welding or bolting) on ​​the front end of the loader bucket, it achieves rapid deployment and mechanized operation, greatly improving maintenance efficiency.

[0019] Please see Figure 1-5 A further solution based on this embodiment is as follows: the lateral distance adjusting telescopic sleeve 1 is provided with a plurality of first through holes 11, and the lateral distance adjusting telescopic tube 2 is provided with a plurality of second through holes 21. When the first through holes 11 and the second through holes 21 overlap, screws can be inserted. By locking multiple sets of preset through holes with bolts, rigid fixation can be achieved at the telescopic position. The operation is simple and quick, and the lateral width adjustment can be completed. This structure is stable and reliable, and can effectively resist vibration and lateral resistance during the trimming process, preventing the equipment from shrinking unexpectedly.

[0020] Please see Figure 1-4 A further solution based on this embodiment is as follows: the end of the lateral distance adjusting telescopic tube 2 is integrally formed with a first U-shaped block 23, and the first rotating arm 61 can rotate within the first U-shaped block 23. The first U-shaped block 23 provides a stable hinge support for the first rotating arm 61, ensuring that it rotates smoothly around the horizontal axis; the integral forming process enhances the overall strength and rigidity of the connection part, reduces the risk of breakage due to stress concentration during long-term use, and extends the service life of the device.

[0021] Please see Figure 1-4 A further solution based on this embodiment is as follows: An angle adjustment disc 3 is bolted to the first U-shaped block 23. The angle adjustment disc 3 has a plurality of slots 31 arranged in a ring. A positioning bolt 32 can be connected to the first rotating arm 61, and the positioning bolt 32 can fit into one of the slots 31 on the angle adjustment disc 3. The angle adjustment disc 3 and the slot 31 structure constitute an angle locking mechanism. Users can quickly select and fix the required working posture according to the tilt angle of the isolation strip or the trimming requirements. The adjustment process is intuitive and efficient, and a rough angle can be determined without measuring instruments. It is suitable for continuous field operation scenarios and greatly improves the efficiency of on-site adjustment.

[0022] Please see Figure 1-4 A further solution based on this embodiment is as follows: a first spring fixing lug 611 is provided on the first rotating arm 61, and a second spring fixing lug 621 is provided on the second rotating arm 62. An obstacle avoidance tension spring 5 is connected to both the first spring fixing lug 611 and the second spring fixing lug 621. The obstacle avoidance tension spring 5 provides the second rotating arm 62 with the power to return to its original position. During the trimming process, if it encounters obstacles that cannot be cut, such as streetlight poles or traffic sign posts, the second rotating arm 62, along with the trimmer head 9, is allowed to actively tilt backward to make way, achieving passive flexible obstacle avoidance. After passing the obstacle, it automatically returns to its original position under the action of the tension spring, avoiding equipment damage or downtime and ensuring continuous operation capability.

[0023] Please see Figure 2-5 A further solution based on this embodiment is as follows: one end of the first rotating arm 61 is connected to one end of the second U-shaped block 612, and the other end of the second U-shaped block 612 can abut against the second rotating arm 62. The second U-shaped block 612 is used to prevent the obstacle avoidance tension spring 5 from pulling the first rotating arm 61 and the second rotating arm 62 to excessively rotate. As a mechanical limiting structure, the second U-shaped block 612 limits the maximum rotation angle of the second rotating arm 62, preventing the boom from folding backward or rebounding uncontrollably due to excessive tension spring or impact, ensuring that the obstacle avoidance action is controllable and the reset is accurate, and improving the safety and structural stability of the equipment operation.

[0024] Please see Figure 2-5A further solution based on this embodiment is as follows: A T-slot 630 is provided on the mounting base 63, and a slider 92 slides within the T-slot 630. A blade 91 is integrally formed on the slider 92, and the blade 91 has cutting serrations. A blade protector 7 is bolted to the mounting base 63. The blade protector 7 is used to prevent the utility pole from impacting the trimmer head 9. The guiding structure of the T-slot 630 ensures smooth movement and high guiding accuracy of the slider 92; the serrated blade 91 enhances the shearing ability on thick branches; the blade protector 7, as the first contact component, preferentially contacts obstacles during movement and triggers obstacle avoidance action, effectively protecting the high-speed moving trimmer head 9 from direct impact, reducing maintenance frequency, and extending the lifespan of critical components.

[0025] Please see Figure 2-5 A further solution based on this embodiment is as follows: A variable frequency motor 8 is installed on the mounting base 63. The variable frequency motor 8 is powered by a DC lithium battery. The output end of the variable frequency motor 8 is connected to a cam 81, which can contact one end of the slider 92. The mounting base 63 is provided with a third spring fixing ear 631, and the blade 91 is connected to a fourth spring fixing ear 911. The third spring fixing ear 631 and the fourth spring fixing ear 911 are connected to a tension spring 64, which is used to pull the slider 92 to fit against the cam 81. The variable frequency motor 8 drives the cam 81 to push the slider 92, which, in conjunction with the tension spring 64, returns to its original position, forming a stable reciprocating shearing mechanism with smooth operation and a low failure rate. The variable frequency control can adjust the reciprocating frequency of the blade to adapt to different vegetation densities. The lithium battery is installed on the loader.

[0026] Working principle: First, the lateral distance adjusting telescopic sleeve 1 is fixed to the front end of the loader bucket by welding or bolting. Based on the actual width of the highway greenbelt, the extension length of the lateral distance adjusting telescopic tube 2 within the telescopic sleeve is adjusted. When the first through hole 11 aligns with the second through hole 21, a fastening screw is inserted to lock it in place, thus adjusting the lateral trimming range. Then, through the cooperation of the slot 31 on the angle adjusting disc 3 and the positioning bolt 32, the pitch angle of the first rotating arm 61 relative to the horizontal plane is set and locked by bolts to adapt to different slopes or vegetation shapes. During operation, the variable frequency motor 8 installed on the mounting base 63 is started. Its output drives the cam 81 to rotate. The cam 81 pushes the slider 92 to reciprocate within the T-slot 630. Simultaneously, the tension spring 64 provides a pull force between the third spring fixing ear 631 and the fourth spring fixing ear 911, ensuring that the slider 92 always fits against the surface of the cam 81, thereby driving the blade 91 to continuously reciprocate and complete the trimming of the green plants. When the blade guard 7 encounters a fixed obstacle such as a utility pole or streetlight pole during trimming, the resistance causes the second rotating arm 62 to rotate backward around its hinge axis with the first rotating arm 61, compressing the obstacle avoidance tension spring 5. This allows the trimmer head 9 to avoid the obstacle and prevents damage to the equipment. After the obstacle has passed, the second rotating arm 62 automatically returns to its initial working position under the elastic restoring force of the obstacle avoidance tension spring 5, and continues normal trimming operations. The rotating connection method is common knowledge in the art, such as through bearings, pins, or hinges, and the installation structure is a conventional method well-known to those skilled in the art. The springs used here have hooks on both sides.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A variable-angle highway greenbelt trimming device, characterized in that: It includes a lateral distance adjusting telescopic sleeve (1), a lateral distance adjusting telescopic tube (2) is inserted inside the lateral distance adjusting telescopic sleeve (1), one end of the lateral distance adjusting telescopic tube (2) is rotatably connected to the first rotating arm (61), the other end of the first rotating arm (61) is rotatably connected to the second rotating arm (62), the rotation axis between the first rotating arm (61) and the lateral distance adjusting telescopic tube (2) is perpendicular to the rotation axis between the first rotating arm (61) and the second rotating arm (62), the second rotating arm (62) is provided with a mounting seat (63), and a reciprocating trimmer head (9) is installed on the mounting seat (63).

2. The variable-angle highway greenbelt trimming device according to claim 1, characterized in that: The lateral distance adjusting telescopic sleeve (1) is provided with several first through holes (11), and the lateral distance adjusting telescopic tube (2) is provided with several second through holes (21). When the first through holes (11) and the second through holes (21) overlap, screws can be inserted.

3. The variable-angle highway greenbelt trimming device according to claim 2, characterized in that: The end of the lateral distance adjusting telescopic tube (2) is integrally formed with a first U-shaped block (23), and the first rotating arm (61) can rotate within the first U-shaped block (23).

4. The variable-angle highway greenbelt trimming device according to claim 3, characterized in that: An angle adjustment disc (3) is bolted to the first U-shaped block (23). The angle adjustment disc (3) has several slots (31) arranged in a ring. A positioning bolt (32) can be connected to the first rotating arm (61). The positioning bolt (32) can fit into one of the slots (31) on the angle adjustment disc (3).

5. The variable-angle highway greenbelt trimming device according to claim 4, characterized in that: The first rotating arm (61) is provided with a first spring fixing ear (611), and the second rotating arm (62) is provided with a second spring fixing ear (621). The first spring fixing ear (611) and the second spring fixing ear (621) are connected together with an obstacle avoidance tension spring (5).

6. The variable-angle highway greenbelt trimming device according to claim 5, characterized in that: The first rotating arm (61) is connected to one end of the second U-shaped block (612), and the other end of the second U-shaped block (612) can abut against the second rotating arm (62). The second U-shaped block (612) is used to prevent the obstacle avoidance tension spring (5) from pulling the first rotating arm (61) and the second rotating arm (62) to over-rotate.

7. The variable-angle highway greenbelt trimming device according to claim 6, characterized in that: The mounting base (63) is provided with a T-slot (630), and a slider (92) slides in the T-slot (630). A blade (91) is integrally formed on the slider (92), and the blade (91) is provided with cutting teeth. A blade guard (7) is connected to the mounting base (63) by bolts. The blade guard (7) is used to prevent the utility pole from hitting the cutting tool head (9).

8. The variable-angle highway greenbelt trimming device according to claim 7, characterized in that: A variable frequency motor (8) is installed on the mounting base (63). The variable frequency motor (8) is powered by a DC lithium battery. The output end of the variable frequency motor (8) is connected to a cam (81). The cam (81) can contact one end of the slider (92). The mounting base (63) is provided with a third spring fixing ear (631). The blade (91) is connected to a fourth spring fixing ear (911). The third spring fixing ear (631) and the fourth spring fixing ear (911) are connected to a tension spring (64). The tension spring (64) is used to pull the slider (92) to fit against the cam (81).

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