A new blade suitable for a street tree pruning vehicle

Abstract

This invention provides a novel blade for a roadside tree pruning vehicle. The roadside tree pruning vehicle includes a body, a pruning arm, and a blade disc. Multiple novel blades are mounted on the blade disc. Each novel blade includes a mounting part, a mounting hole, a left blade body, a right blade body, a first cutting edge, and a second cutting edge. The mounting part is generally rectangular, with a mounting hole in its center. The left and right blade bodies are connected to opposite sides of the mounting part, respectively. The left and right blade bodies are generally trapezoidal, with their lower base connected to the side of the mounting part and their upper base extending outside the mounting part. This invention enables bidirectional cutting; effective cutting can be performed whether the blade disc rotates clockwise or counterclockwise, improving operational flexibility and making it suitable for back-and-forth pruning operations. The left and right blade bodies more easily cut into hard or thick branches, reducing initial impact and lowering the risk of blade chipping. A V-shaped cutting area is formed between adjacent blades.

Description

Technical Field

[0001] This utility model belongs to the field of tree branch pruning tool vehicles, and in particular relates to a new type of blade suitable for roadside tree pruning vehicles. Background Technology

[0002] A roadside tree trimmer is a vehicle used for pruning the branches of trees lining roads. It typically includes a diesel generator set, a pruning arm, a pruning shear disc, and blades. The diesel generator set drives the pruning arm, which is connected to the pruning shear disc. The shear disc holds the blades used to prune roadside branches, and the blades are usually driven by an independent motor. Traditional rectangular blades are not ideal for cutting hard or thick branches, and the initial impact force is too great, making the blades prone to cracking and breakage. Parallel blades on other cutting machines make it difficult to guide branches towards the base of the blade, resulting in cutting at the point of greatest branch strength, causing the branch to be knocked away by the blade tip rather than severed. Utility Model Content

[0003] In view of this, the present invention aims to propose a new type of blade suitable for roadside tree pruning vehicles. When rotating, the new blade can achieve bidirectional cutting; it can effectively cut whether the blade head rotates clockwise or counterclockwise, improving operational flexibility and making it suitable for back-and-forth pruning operations. The left and right blades more easily cut into hard or thick branches, reducing initial impact and lowering the risk of blade chipping.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows: A novel blade for a roadside tree pruning vehicle is disclosed. Based on the roadside tree pruning vehicle, which includes a vehicle body, a pruning arm, and a blade disc, the blade disc is equipped with multiple novel blades. Each novel blade includes a mounting part, a mounting hole, a left blade body, a right blade body, a first cutting edge, and a second cutting edge. The mounting part is generally rectangular, with a mounting hole at its center for a rotating shaft connected to the main shaft of a rotary motor. The left and right blade bodies are connected to opposite sides of the mounting part, and the left and right blade bodies are generally trapezoidal. The lower base of the trapezoid is connected to the side of the mounting part, and the upper base extends to the outside of the mounting part. The left and right sides of the cutter body are respectively provided with a first cutting edge and a second cutting edge. The first cutting edge and the second cutting edge are respectively arranged along the full length of one side of the left and right sides of the cutter body, and the first cutting edge and the second cutting edge are respectively located on opposite sides of the mounting part; the cutter head is provided with a plurality of novel blades, which are arranged at intervals, and the center points of two adjacent novel blades are staggered.

[0005] Preferably, the center point extension lines of two adjacent novel blades are staggered.

[0006] Preferably, the line connecting the center points of two adjacent novel blades is provided with an intersecting angle with its vertical extension.

[0007] Preferably, the cutter head is rectangular in shape, and the novel blade is arranged along the length of the cutter head.

[0008] Preferably, the width of the first cutting edge and the second cutting edge is 1 cm to 2 cm.

[0009] Preferably, the upper bottom edge of the left and right blades is 5 cm to 10 cm, and the lower bottom edge of the left and right blades is 15 cm to 30 cm.

[0010] Preferably, the lengths of the mounting portion, the left blade body, and the right blade body are each one-third of the total length of the novel blade.

[0011] Preferably, the mounting part, the left blade body, and the right blade body are connected to each other as an integral structure.

[0012] Compared with the prior art, the novel blade for roadside tree trimming vehicles described in this utility model has the following advantages: The novel blade for a roadside tree pruning vehicle described in this invention features a double main cutting edge formed by the mounting section, left and right blade bodies, and single-sided edge sharpening on both the left and right blade bodies, enabling bidirectional cutting. The left blade body 5 and right blade body 9 more easily cut into hard or thick branches, reducing initial impact and the risk of blade chipping. The novel blades are spaced apart with staggered centers, forming a V-shaped cutting area between adjacent blades, which serves to collect and guide branches, preventing them from being knocked away rather than cut off at the blade tip. Multiple V-shaped cutting areas work continuously, achieving coordinated shearing and higher cutting efficiency. This solves the problems of existing blades being prone to cracking and chipping, difficulty in guiding branches to the blade base, and the tendency for branches to be knocked away rather than cut off. Attached Figure Description

[0013] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the roadside tree trimming vehicle described in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the novel blade structure described in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the structure of the novel blade and blade disc described in the embodiment of this utility model.

[0014] Explanation of reference numerals in the attached figures: 1-Car body; 2-Trimping arm; 3-Cutter head; 4-New type of blade; 5-Left side cutter body; 6-First cutting edge 6; 7-Mounting hole; 8-Mounting part; 9-Right side cutter body; 10-Second cutting edge; 11-Lower bottom edge; 12-Upper bottom edge; 13-V-shaped cutting area. Detailed Implementation

[0015] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0016] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] like Figures 1 to 3 As shown, a novel blade suitable for a roadside tree pruning vehicle is described. Based on the roadside tree pruning vehicle, the vehicle includes a body 1, a pruning arm 2, and a blade disc 3. Multiple novel blades 4 are mounted on the blade disc 3. Each novel blade 4 includes a mounting part 8, a mounting hole 7, a left blade body 5 and a right blade body 9, a first cutting edge 6, and a second cutting edge 10. The mounting part 8 is generally rectangular, with a mounting hole 7 at its center for a rotating shaft connected to the main shaft of a rotary motor. The mounting part 8 is connected to the left blade body 5 and the right blade body 9 on opposite sides. The left blade body 5 and the right blade body 9 are generally trapezoidal, with the lower base 11 of the trapezoid connected to the side of the mounting part 8, and the upper base 12 extending to the outside of the mounting part 8. The left-side cutter body 5 and the right-side cutter body 9 are respectively provided with a first cutting edge 6 and a second cutting edge 10. The first cutting edge 6 and the second cutting edge 10 are respectively arranged along the full length of one side of the waist of the left-side cutter body 5 and the right-side cutter body 9, and the first cutting edge 6 and the second cutting edge 10 are respectively located on opposite sides of the mounting part 8. The cutter disc 3 is provided with a plurality of novel blades 4. The novel blades 4 are arranged at intervals, and the center points of two adjacent novel blades 4 are staggered.

[0018] The novel blade 4 described in this invention abandons the traditional rectangular blade. Through the mounting part 8, the left blade body 5, and the right blade body 9, the blades are edged on one side of each blade body, with a first cutting edge 6 and a second cutting edge 10 forming a double main cutting edge. When the rotary motor drives the novel blade 4 to rotate via the main shaft, it can achieve bidirectional cutting. Regardless of whether the blade head rotates clockwise or counterclockwise, it can effectively cut, improving operational flexibility and making it suitable for back-and-forth pruning operations. Furthermore, the upper bottom edge of the left blade body 5 and the right blade body 9 is shorter than the lower bottom edge, providing a natural "piercing edge," making it easier to cut into hard or thick branches, reducing initial impact force, and lowering the risk of blade chipping.

[0019] The novel blades 4 on the cutter head 3 of this invention are arranged at intervals, with the center points of two adjacent blades 4 intersecting. This staggered arrangement of the blades creates a radial V-shaped layout on the cutter head, forming V-shaped cutting areas 13 between three adjacent blades. These areas serve to collect and guide the branches, allowing them to be better "captured" and guided towards the base of the blade for cutting at the point of highest strength, preventing the branches from being knocked away by the blade tip instead of being severed. Multiple V-shaped cutting areas 13 work continuously, forming a continuous and efficient shearing surface, achieving coordinated shearing, higher cutting efficiency, and a smoother cut.

[0020] In this preferred embodiment, such as Figure 3 As shown, the extended lines of the center points of two adjacent novel blades 4 are staggered, with a preferred stagger distance H of 10 to 15 centimeters. The line connecting the center points of two adjacent novel blades 4 is staggered with its extended line in the vertical direction. A preferred stagger angle A is 30° to 45°. The blade disc 3 is generally rectangular, and the novel blades 4 are arranged along the length of the blade disc 3. This improves cutting efficiency and further reduces the risk of blade chipping.

[0021] The width of the first cutting edge 6 and the second cutting edge 10 is 1 cm to 2 cm. The upper bottom edge 12 of the left blade 5 and the right blade 9 is 5 cm to 10 cm, and the lower bottom edge 11 of the left blade 5 and the right blade 9 is 15 cm to 30 cm. This makes it easier to cut into hard or thick branches, reduces the initial impact force, and further reduces the risk of chipping of the first cutting edge 6 and the second cutting edge 10.

[0022] like Figure 2 As shown, the lengths of the mounting part 8, the left blade body 5, and the right blade body 9 each account for one-third of the total length of the new blade. The mounting part 8, the left blade body 5, and the right blade body 9 are interconnected to form an integral structure. The new blade has a reasonable structure, further improving cutting efficiency.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel blade for a roadside tree pruning vehicle, based on a roadside tree pruning vehicle comprising a vehicle body (1), a pruning arm (2), and a blade disc (3), characterized in that: The cutter head (3) is provided with a plurality of new blades (4). The new blades (4) include a mounting part (8), a mounting hole (7), a left blade body (5) and a right blade body (9), a first cutting edge (6) and a second cutting edge (10). The mounting part (8) is rectangular in shape. The mounting part (8) has a mounting hole (7) in the center. The mounting hole (7) is used to pass through a rotating shaft connected to the main shaft of the rotary motor. The mounting part (8) is connected to the left blade body (5) and the right blade body (9) on opposite sides. The left blade body (5) and the right blade body (9) are trapezoidal in shape. The lower base (11) of the trapezoid is connected to the side of the mounting part (8), and the upper base (12) of the trapezoid extends to the outside of the mounting part (8). The left-side cutter body (5) and the right-side cutter body (9) are respectively provided with a first cutting edge (6) and a second cutting edge (10). The first cutting edge (6) and the second cutting edge (10) are respectively arranged along the full length of the single side waist of the left-side cutter body (5) and the right-side cutter body (9), and the first cutting edge (6) and the second cutting edge (10) are respectively located on opposite sides of the mounting part (8); the cutter disc (3) is provided with a plurality of new blades (4). The new blades (4) are arranged at intervals, and the center points of two adjacent new blades (4) are staggered.

2. The novel blade for a roadside tree trimmer according to claim 1, characterized in that: An interlaced distance is set between the extended lines of the center points of two adjacent novel blades (4).

3. The novel blade for a roadside tree trimmer according to claim 1, characterized in that: An intersecting angle is set between the line connecting the center points of two adjacent novel blades (4) and the vertical extension line.

4. The novel blade for a roadside tree trimmer according to claim 1, characterized in that: The cutter head (3) is rectangular in shape, and the new blade (4) is arranged along the length of the cutter head (3).

5. The novel blade for a roadside tree trimmer according to claim 1, characterized in that: The width of the first cutting edge (6) and the second cutting edge (10) is 1 cm to 2 cm.

6. The novel blade for a roadside tree trimmer according to claim 1, characterized in that: The upper bottom edge (12) of the left blade (5) and the right blade (9) is 5 cm to 10 cm, and the lower bottom edge (11) of the left blade (5) and the right blade (9) is 15 cm to 30 cm.

7. The novel blade for a roadside tree trimmer according to claim 1, characterized in that: The lengths of the mounting part (8), the left blade body (5), and the right blade body (9) each account for one-third of the total length of the new blade.

8. The novel blade for a roadside tree trimmer according to claim 1, characterized in that: The mounting part (8), the left blade body (5) and the right blade body (9) are connected to each other as an integral structure.

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