Branch pruning device for forestry

Abstract

The forestry branch pruning device comprises an outer cylinder, a first fixing block is fixed to the end in the outer cylinder, a first rotating shaft is rotationally installed in the middle of the first fixing block through a bearing, one end of the first rotating shaft is fixedly connected with the output end of a motor, and the other end of the first rotating shaft is fixedly connected with the output end of the motor. A limiting mechanism is arranged at the joint of the first rotating shaft and the second rotating shaft, a length adjusting mechanism is arranged between the outer cylinder and the inner cylinder, and a fixing mechanism is arranged between the outer cylinder and the movable ring. Fixing of the position of the cutting disc after movement can be completed through the arranged fixing mechanism, so that the length of the pruning device can be adjusted, the cutting disc at the position after movement can be driven to rotate by starting a motor, trees of different heights can be cut, the universality of the device is improved, and after the pruning device is shortened, the pruning device is convenient to use. The trimming device is convenient to carry.

Description

Technical Field

[0001] The utility model relates to the technical field of forestry tools, in particular to a branch pruning device for forestry. Background Art

[0002] In the process of forestry greening construction, in order to ensure the beauty of garden trees, workers need to use pruning devices to prune the branches of garden trees in order to control the growth of garden trees.

[0003] For example, the Chinese utility model patent with the authorization announcement number CN218784117U discloses a forestry branch pruning device, which relates to the branch pruning technology field. The utility model includes a first pruning knife and a second pruning knife, the first pruning knife and the second pruning knife are movably connected through a rotating shaft, and the first pruning knife and the second pruning knife are connected to a support rod at one end near the lower side, under the action of the rotating shaft, it is convenient to adjust the first pruning knife and the second pruning knife to be close to each other, and prune the branches, the first pruning knife is provided with a movable groove on the side away from the blade, a saw blade is arranged inside the movable groove, and the side of the saw blade close to the rotating shaft is rotatably connected to a connecting rod through a pin shaft, a driving motor is installed on the outer surface of the first pruning knife, the output shaft of the driving motor passes through the first pruning knife and is connected to a crankshaft, and the crankshaft and the connecting rod are rotatably connected through a shaft rod, which is convenient to drive the saw blade to move back and forth, and prune thicker branches, saving manpower and improving pruning efficiency.

[0004] The above-mentioned authorized patent can only be used to prune shorter trees, but not to prune taller trees, resulting in great limitations in use.

[0005] In view of the above problems, it is urgently necessary to carry out innovative design based on the original branch pruning device. Summary of the invention

[0006] The purpose of the utility model is to provide a branch pruning device for forestry to solve the problems raised by the above-mentioned background technology.

[0007] To achieve the above object, the utility model provides the following technical solution: A branch pruning device for forestry, comprising an outer cylinder. A first fixing block is fixed at the inner end of the outer cylinder. A first rotating shaft is rotatably installed in the middle of the first fixing block through a bearing. One end of the first rotating shaft is fixedly connected to the output end of a motor. The outer wall of the motor is fixed to the end of the outer cylinder through a machine cover. An inner cylinder is slidably installed inside the outer cylinder. A second fixing block is fixed at one end of the inner cylinder away from the first fixing block. A second rotating shaft is rotatably installed in the middle of the second fixing block through a bearing. One end of the second rotating shaft is located outside the inner cylinder and is fixedly connected with a cutting disc. The other end of the second rotating shaft is slidably installed inside the first rotating shaft. A limiting mechanism is arranged at the connection of the first rotating shaft and the second rotating shaft. A length adjusting mechanism is arranged between the outer cylinder and the inner cylinder. A fixing mechanism is arranged between the outer cylinder and the movable ring.

[0008] Preferably, the limiting mechanism includes a limiting plate. A limiting groove is opened inside the first rotating shaft. The limiting plate is slidably installed inside the limiting groove. The bottom of the limiting plate is fixedly connected to the top of the second rotating shaft.

[0009] Preferably, the length adjusting mechanism includes a movable ring. The movable ring is nested and slidably installed on the outer side of the outer cylinder. A through groove is opened on the outer side of the outer cylinder. A connecting rod is fixed to the inner side of the movable ring. The end of the connecting rod passes through the inside of the through groove and is fixedly connected to the outer wall of the inner cylinder. The connecting rod and the through groove form a sliding connection.

[0010] Preferably, the fixing mechanism includes a U-shaped frame. The U-shaped frame is fixed to the outer wall of the movable ring. A clamping rod is installed through the end of the U-shaped frame. One end of the clamping rod passes through the side of the movable ring and is located inside a clamping groove. The clamping groove is opened on the outer side of the outer cylinder. A limiting ring is fixed to the outer wall of the clamping rod inside the U-shaped frame. A spring is nested on the outer side of the clamping rod. The spring is located between the limiting ring and the inner side of the U-shaped frame. A pulling hole is opened at the other end of the clamping rod.

[0011] Preferably, a cord is fixed to the outer wall of the outer cylinder near the machine cover.

[0012] Preferably, a power cord is arranged on the motor. A plug is arranged at the end of the power cord.

[0013] Preferably, the clamping grooves are equally spaced on one side of the outer cylinder, and the end of the clamping rod is clamped and connected with the clamping grooves. Moreover, the clamping rod forms a sliding connection with both the movable ring and the U-shaped frame.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: For this branch pruning device for forestry, by moving the movable ring left and right, the cutting disc can be moved left and right, and the fixed mechanism provided can fix the position of the cutting disc after movement, so that the length of the pruning device can be adjusted. Moreover, by starting the motor, the cutting disc at the moved position can be driven to rotate, so that trees at different heights can be cut, improving the versatility of the device. And after the pruning device is shortened, it is convenient to carry.

[0015] A cord is provided so that the cord can be hung around the user's neck, reducing the force exerted by the user's hand and facilitating the user to adjust the direction of the pruning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a front sectional structure schematic diagram of the present utility model;

[0017] Figure 2 For the present utility model Figure 1 is an enlarged structure schematic diagram at A in

[0018] Figure 3 is a side sectional structure schematic diagram of the present utility model;

[0019] Figure 4 is a side view distribution structure schematic diagram of the card slots of the present utility model;

[0020] Figure 5 is a mounting structure schematic diagram of the clamping rod of the present utility model.

[0021] In the figure: 1. Outer cylinder; 2. First fixing block; 3. First rotating shaft; 4. Motor; 5. Machine cover; 6. Power cord; 7. Inner cylinder; 8. Second fixing block; 9. Second rotating shaft; 10. Cutting disc; 11. Limiting plate; 12. Limiting groove; 13. Through groove; 14. Movable ring; 15. Connecting rod; 16. U-shaped frame; 17. Clamping rod; 18. Card slot; 19. Limiting ring; 20. Spring; 21. Pulling hole; 22. Cord. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-5, the present utility model provides a technical solution: a branch pruning device for forestry, including an outer cylinder 1. A first fixing block 2 is fixed at the end inside the outer cylinder 1. A first rotating shaft 3 is rotatably installed in the middle of the first fixing block 2 through a bearing. One end of the first rotating shaft 3 is fixedly connected to the output end of a motor 4. The outer wall of the motor 4 is fixed to the end of the outer cylinder 1 through a machine cover 5. An inner cylinder 7 is slidably installed inside the outer cylinder 1. A second fixing block 8 is fixed at one end inside the inner cylinder 7 away from the first fixing block 2. A second rotating shaft 9 is rotatably installed in the middle of the second fixing block 8 through a bearing. One end of the second rotating shaft 9 is located outside the inner cylinder 7 and is fixed with a cutting disc 10. The other end of the second rotating shaft 9 is slidably installed inside the first rotating shaft 3. A limiting mechanism is provided at the connection between the first rotating shaft 3 and the second rotating shaft 9. A length adjusting mechanism is provided between the outer cylinder 1 and the inner cylinder 7. A fixing mechanism is provided between the outer cylinder 1 and the movable ring 14.

[0024] The limiting mechanism includes a limiting plate 11. A limiting groove 12 is opened inside the first rotating shaft 3. The limiting plate 11 is slidably installed inside the limiting groove 12. The bottom of the limiting plate 11 is fixedly connected to the top of the second rotating shaft 9, ensuring that when the first rotating shaft 3 rotates, the first rotating shaft 3 can drive the second rotating shaft 9 to rotate through the limiting plate 11 and the limiting groove 12, and at the same time ensuring that the second rotating shaft 9 can move inside the first rotating shaft 3.

[0025] The length adjusting mechanism includes a movable ring 14. The movable ring 14 is nested and slidably installed on the outside of the outer cylinder 1. A through groove 13 is opened on the outside of the outer cylinder 1. A connecting rod 15 is fixed inside the movable ring 14. The end of the connecting rod 15 penetrates through the inside of the through groove 13 and is fixedly connected to the outer wall of the inner cylinder 7. The connecting rod 15 and the through groove 13 form a sliding connection. By pushing the movable ring 14, the movable ring 14 can drive the inner cylinder 7 to move through the connecting rod 15.

[0026] The fixing mechanism includes a U-shaped frame 16. The U-shaped frame 16 is fixed to the outer wall of the movable ring 14. A clamping rod 17 is installed through the end of the U-shaped frame 16. One end of the clamping rod 17 penetrates through the side of the movable ring 14 and is located inside a clamping groove 18. The clamping groove 18 is opened on the outside of the outer cylinder 1. A limiting ring 19 is fixed to the outer wall of the clamping rod 17 inside the U-shaped frame 16. A spring 20 is nested on the outside of the clamping rod 17. The spring 20 is located between the limiting ring 19 and the inside of the U-shaped frame 16. A pulling hole 21 is opened at the other end of the clamping rod 17. The clamping grooves 18 are equally spaced on one side of the outer cylinder 1, and the clamping grooves 18 are clamped and connected to the end of the clamping rod 17, and the clamping rod 17 forms a sliding connection with both the movable ring 14 and the U-shaped frame 16, ensuring that when the end of the clamping rod 17 is clamped with the clamping grooves 18 at different positions, the position of the movable ring 14 after moving can be fixed.

[0027] A cord 22 is fixed to the outer wall of the outer cylinder 1 near the machine cover 5, so that the cord 22 can be hung around the user's neck, reducing the force exerted by the user's hand and facilitating the user to adjust the direction of the pruning device.

[0028] A power cord 6 is provided on the motor 4, and a plug is provided at the end of the power cord 6 for supplying power to the motor 4.

[0029] Working principle: When using this forestry branch pruning device, first put the cord 22 around the user's neck, and then start the motor 4. At this time, the motor 4 drives the first rotating shaft 3 to rotate. The first rotating shaft 3 drives the second rotating shaft 9 and the cutting disc 10 to rotate through the limiting plate 11 and the limiting groove 12, so that the cutting disc 10 can prune lower trees;

[0030] When pruning higher trees, pull the clamping rod 17 so that the end of the clamping rod 17 is separated from the clamping groove 18, and the clamping rod 17 drives the limiting ring 19 to compress the spring 20, so that the movable ring 14 is released from restraint. Then push the movable ring 14, and the movable ring 14 drives the inner cylinder 7 to move through the connecting rod 15. The inner cylinder 7 simultaneously drives the second rotating shaft 9, the cutting disc 10 and the limiting plate 11 to move away from the motor 4 through the second fixing block 8. When the cutting disc 10 moves to a suitable position, release the clamping rod 17. Under the elastic force of the spring 20, the end of the clamping rod 17 is engaged with the clamping groove 18 at other positions, completing the fixation of the position after the movement of the movable ring 14 and simultaneously completing the fixation of the cutting disc 10. Then start the motor 4. At this time, the motor 4 drives the first rotating shaft 3 to rotate. The first rotating shaft 3 drives the second rotating shaft 9 and the cutting disc 10 to rotate through the limiting plate 11 and the limiting groove 12, so that the cutting disc 10 can prune higher trees.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A branch pruning device for forestry, comprising an outer cylinder (1), characterized in that: A first fixing block (2) is fixedly installed at the end inside the outer cylinder (1). A first rotating shaft (3) is rotatably installed in the middle of the first fixing block (2) through a bearing. One end of the first rotating shaft (3) is fixedly connected to the output end of the motor (4). The outer wall of the motor (4) is fixedly installed at the end of the outer cylinder (1) through a machine cover (5). An inner cylinder (7) is slidably installed inside the outer cylinder (1). A second fixing block (8) is fixedly installed at one end inside the inner cylinder (7) away from the first fixing block (2). A second rotating shaft (9) is rotatably installed in the middle of the second fixing block (8) through a bearing. One end of the second rotating shaft (9) is located outside the inner cylinder (7) and is fixedly installed with a cutting disc (10). The other end of the second rotating shaft (9) is slidably installed inside the first rotating shaft (3). A limiting mechanism is arranged at the connection of the first rotating shaft (3) and the second rotating shaft (9). A length adjusting mechanism is arranged between the outer cylinder (1) and the inner cylinder (7). A fixing mechanism is arranged between the outer cylinder (1) and the movable ring (14).

2. The a kind of branch pruning device for forestry according to claim 1, characterized in that: The limiting mechanism includes a limiting plate (11). A limiting groove (12) is opened inside the first rotating shaft (3). The limiting plate (11) is slidably installed inside the limiting groove (12). The bottom of the limiting plate (11) is fixedly connected to the top of the second rotating shaft (9).

3. The pruning device for forestry branches according to claim 1, characterized in that: The length adjusting mechanism includes a movable ring (14). The movable ring (14) is nested and slidably installed outside the outer cylinder (1). A through groove (13) is opened on the outside of the outer cylinder (1). A connecting rod (15) is fixedly installed on the inner side of the movable ring (14). The end of the connecting rod (15) penetrates through the inside of the through groove (13) and is fixedly connected to the outer wall of the inner cylinder (7). The connecting rod (15) and the through groove (13) form a sliding connection.

4. A branch pruning device for forestry according to claim 1, characterized in that: The fixing mechanism includes a U-shaped frame (16). The U-shaped frame (16) is fixedly installed on the outer wall of the movable ring (14). A clamping rod (17) is installed through the end of the U-shaped frame (16). One end of the clamping rod (17) penetrates through the side of the movable ring (14) and is located inside the clamping groove (18). The clamping groove (18) is opened on the outside of the outer cylinder (1). A limiting ring (19) is fixedly installed on the outer wall of the clamping rod (17) inside the U-shaped frame (16). A spring (20) is nested on the outside of the clamping rod (17). The spring (20) is located between the limiting ring (19) and the inner side of the U-shaped frame (16). A pulling hole (21) is opened at the other end of the clamping rod (17).

5. A branch pruning device for forestry according to claim 1, characterized in that: A cord (22) is fixedly installed on the outer wall of the outer cylinder (1) near the machine cover (5).

6. The a forrestry branch pruning device according to claim 1, characterized in that: A power cord (6) is arranged on the motor (4). A plug is arranged at the end of the power cord (6).

7. The pruning device for forestry branches according to claim 4, characterized in that: The clamping grooves (18) are equally spaced on one side of the outer cylinder (1), and the clamping grooves (18) are in clamping connection with the ends of the clamping rods (17). The clamping rods (17) form a sliding connection with both the movable ring (14) and the U-shaped frame (16).

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