Self-propelled nursery stock pruning device for municipal engineering
By designing an adjustable cutting blade structure for a self-propelled seedling pruning device, the problems of laborious use and incomplete pruning of existing devices have been solved, enabling efficient pruning of trees of different sizes and reducing labor costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-04-03
AI Technical Summary
Existing tree pruning equipment used in municipal engineering is labor-intensive to use and makes it difficult to perform detailed pruning on trees of different sizes.
A self-propelled seedling pruning device was designed, which adopts an adjustable cutting blade structure, including small cutting blades with inner and outer grooves and large cutting blades. Through the cooperation of telescopic rods and fixing rings, it can adapt to the pruning of trees with different diameters.
It enables detailed pruning of trees of different sizes, reduces labor costs, and improves pruning efficiency and ease of operation.
Smart Images

Figure CN224069255U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of municipal engineering technology, specifically a self-propelled seedling pruning device for municipal engineering. Background Technology
[0002] Municipal infrastructure projects refer to civil engineering, pipeline, and equipment installation projects for urban roads, public transportation, water supply, drainage, gas, heating, landscaping, sanitation, sewage treatment, garbage disposal, flood control, underground public facilities and ancillary facilities.
[0003] A search revealed Chinese Patent Publication No. CN219761986U, which discloses a tree pruning device for municipal engineering, relating to the technical field of pruning devices. The device includes a movable support device, with a vertical support fixedly installed on the top of the movable support device, a horizontal support fixedly installed on the top of the vertical support device, and a protective equipment box fixedly installed at one end of the horizontal support device. This invention, by installing a movable unit at the bottom of the support plate, allows for the movement and adjustment of the pruning device's position via movable rollers, facilitating device movement and eliminating the need for lifting and carrying operations by workers. This effectively reduces the workload and physical exertion of workers. The protective equipment box effectively protects the pruning mechanism through its enclosed design, preventing debris generated during pruning from entering and affecting or damaging the device. It also prevents dust accumulation on the device surface over time. While this application addresses the issue of handheld pruning devices requiring carrying or lifting with both hands, which is laborious, it has limitations due to the significant differences in tree size, making it difficult to perform detailed pruning on trees of varying sizes. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a self-propelled seedling pruning device for municipal engineering. It aims to solve the problem that although the existing technology can solve the problem that the handheld pruning device needs to be carried on the body or picked up by both hands for operation and is relatively laborious to use, the size of trees varies greatly, and it is difficult to prune trees of different sizes in a detailed manner during the pruning process, which has certain limitations.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A self-propelled seedling pruning device for municipal engineering includes a support structure and a pruning structure, wherein the pruning structure is installed on the top of the support structure.
[0007] The trimming structure consists of a fixed base and a connecting base. A sleeve rod is installed on the top of the fixed base, a telescopic rod is installed on the top of the sleeve rod, a connecting base is installed on the top of the telescopic rod, an mounting base is installed on the top of the connecting base, and a drive motor is installed on the top of the mounting base. An mounting groove is formed on the outer side of the connecting base. Two connecting rods are installed on one side of the connecting base, and a fixing ring is installed on the other side of the connecting rod. An inner groove is formed on the inner side wall of the fixing ring, and an outer groove is formed on the outer surface of the fixing ring. Several small cutting blades are installed inside the inner groove, and several large cutting blades are installed inside the outer groove.
[0008] Preferably, the support structure consists of a base and a control device. Electric wheels are installed around the bottom of the base, and the control device is installed on one side of the top of the base. A display screen is provided on the outside of the control device, and several control buttons are installed below the display screen. A power supply socket is installed on the other side of the top of the base.
[0009] Preferably, a rotating shaft is installed inside the mounting groove on the connecting seat, and a rotating ring is sleeved on the rotating shaft.
[0010] Preferably, the output end of the drive motor is connected to the rotating shaft, and one side of the connecting rod is connected to the rotating ring.
[0011] Preferably, the fixing ring adopts a semi-circular structure design, and the two fixing rings are used in conjunction with each other.
[0012] Preferably, the fixing seat is fixedly installed at the very center of the top of the base.
[0013] Preferably, the control device is connected to the electric wheel, drive motor, small cutting blade and large cutting blade.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] This utility model, through the connection seat, enables the connecting rod to drive the fixed ring to rotate via the rotating ring, and the tree is wrapped by the two fixed rings. The tree moves up and down via the telescopic rod. When the tree is large, the large cutting blade in the outer groove on the outer surface of the fixed ring is used to prune the tree. Conversely, when the tree is small, the small cutting blade in the inner groove on the inner side wall of the fixed ring is used to prune the tree, which is more precise. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the overall structure of the control device of this utility model;
[0018] Figure 3 This is a schematic diagram of the overall structure of the fixing ring of this utility model;
[0019] Figure 4 This is a schematic diagram of the overall structure of the connector of this utility model.
[0020] In the diagram: 1. Support structure; 11. Base; 12. Electric wheel; 13. Control device; 131. Display screen; 132. Control button; 14. Power supply base; 2. Trimming structure; 21. Fixing base; 22. Sleeve rod; 23. Telescopic rod; 24. Connecting base; 241. Mounting groove; 242. Rotating ring; 243. Rotating shaft; 25. Mounting base; 26. Drive motor; 27. Connecting rod; 271. Fixing ring; 272. Inner groove; 273. Outer groove; 274. Small cutting blade; 275. Large cutting blade. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example
[0022] Please see Figures 1-4This embodiment provides a self-propelled tree pruning device for municipal engineering, including a support structure 1 and a pruning structure. The pruning structure is installed on the top of the support structure 1. The pruning structure consists of a fixed seat 21 and a connecting seat 24. A sleeve rod 22 is installed on the top of the fixed seat 21, a telescopic rod 23 is installed on the top of the sleeve rod 22, a connecting seat 24 is installed on the top of the telescopic rod 23, an mounting seat 25 is installed on the top of the connecting seat 24, and a drive motor 26 is installed on the top of the mounting seat 25. An mounting groove 241 is provided on the outer side of the connecting seat 24. Two connecting rods 27 are installed on one side of the connecting seat 24, and a fixing ring 271 is installed on the other side of the connecting rods 27. An inner ring 271 is provided on the inner side wall of the fixing ring 271. The outer surface of the retaining ring 271 has an outer groove 273, the inner groove 272 has several small cutting blades 274 installed inside, and the outer groove 273 has several large cutting blades 275 installed inside. The connecting rod 27 drives the retaining ring 271 to rotate through the rotating ring 242, and the tree is wrapped by the two retaining rings 271. The tree moves up and down by the telescopic rod 23. When the tree is large, the large cutting blades 275 in the outer groove 273 on the outer surface of the retaining ring 271 are used to prune the tree. Conversely, when the tree is small, the small cutting blades 274 in the inner groove 272 on the inner side wall of the retaining ring 271 are used to prune the tree, which is more precise.
[0023] In this embodiment, as Figure 1 and Figure 2 As shown, the support structure 1 consists of a base 11 and a control device 13. Electric wheels 12 are installed around the bottom of the base 11, and the control device 13 is installed on one side of the top of the base 11. A display screen 131 is provided on the outside of the control device 13, and several control buttons 132 are installed below the display screen 131. A power supply base 14 is installed on the other side of the top of the base 11. The electric wheels 12 can move the base 11 to the side of the tree that needs to be pruned, and the pruning structure can be controlled by the control device 13 to perform pruning, which is more convenient.
[0024] In this embodiment, as Figure 1 and Figure 4 As shown, a rotating shaft 243 is installed inside the mounting groove 241 on the connecting seat 24. A rotating ring 242 is sleeved on the rotating shaft 243. When the rotating shaft 243 rotates, the rotating ring 242 will drive the connecting rod 27 to move, thereby controlling the movement of the fixed ring 271.
[0025] In this embodiment, as Figure 1 and Figure 4 As shown, the output end of the drive motor 26 is connected to the rotating shaft 243, and one side of the connecting rod 27 is connected to the rotating ring 242. The drive motor 26 can drive the rotating shaft 243 to rotate, thereby driving the connecting rod 27 to move synchronously.
[0026] In this embodiment, as Figure 1 and Figure 3 As shown, the fixing ring 271 adopts a semi-circular structure design. The two fixing rings 271 work together to wrap the trunk of the tree and move upward through the telescopic rod 23 for easy pruning.
[0027] In this embodiment, as Figure 1 As shown, the fixing seat 21 is fixedly installed in the center of the top of the base 11, which can make the overall structure more stable and prevent it from tipping over.
[0028] In this embodiment, as Figure 1 As shown, the control device 13 is connected to the electric wheel 12, the drive motor 26, the small cutting blade 274 and the large cutting blade 275, and can be controlled by the control device 13, which can greatly reduce labor costs.
[0029] Working principle: The electric wheel 12 drives the base 11 to move next to the tree to be pruned, and the control device 13 controls the pruning structure. The drive motor 26 drives the rotating shaft 243 to rotate, so that the connecting rod 27 drives the fixed ring 271 to rotate through the rotating ring 242. The two fixed rings 271 merge to wrap around the tree. The telescopic rod 23 moves up and down. When the tree is large, the large cutting blade 275 in the outer groove 273 on the outer surface of the fixed ring 271 is used to prune the tree. Conversely, when the tree is small, the small cutting blade 274 in the inner groove 272 on the inner side wall of the fixed ring 271 is used to prune the tree, which is more precise. This device has a simple structure, is easy to use and has high practicality.
[0030] All technical features in this embodiment can be freely combined according to actual needs.
[0031] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.
Claims
1. A self-propelled tree pruning device for municipal engineering, comprising a support structure (1) and a pruning structure, characterized in that: A trimming structure is installed on the top of the support structure (1); The trimming structure consists of a fixed seat (21) and a connecting seat (24). A sleeve rod (22) is installed on the top of the fixed seat (21). A telescopic rod (23) is installed on the top of the sleeve rod (22). A connecting seat (24) is installed on the top of the telescopic rod (23). An mounting seat (25) is installed on the top of the connecting seat (24). A drive motor (26) is installed on the top of the mounting seat (25). An mounting groove (241) is provided on the outer side of the connecting seat (24). Two connecting rods (27) are installed on one side of the connecting seat (24). A fixing ring (271) is installed on the other side of the connecting rod (27). An inner groove (272) is provided on the inner side wall of the fixing ring (271). An outer groove (273) is provided on the outer surface of the fixing ring (271). Several small cutting blades (274) are installed inside the inner groove (272). Several large cutting blades (275) are installed inside the outer groove (273).
2. The self-propelled tree pruning device for municipal engineering according to claim 1, characterized in that: The support structure (1) consists of a base (11) and a control device (13). Electric wheels (12) are installed around the bottom of the base (11). The control device (13) is installed on one side of the top of the base (11). A display screen (131) is provided on the outside of the control device (13). Several control buttons (132) are installed below the display screen (131). A power supply socket (14) is installed on the other side of the top of the base (11).
3. The self-propelled tree pruning device for municipal engineering according to claim 1, characterized in that: A rotating shaft (243) is installed inside the mounting groove (241) on the connecting seat (24), and a rotating ring (242) is sleeved on the rotating shaft (243).
4. The self-propelled tree pruning device for municipal engineering according to claim 3, characterized in that: The output end of the drive motor (26) is connected to the rotating shaft (243) for transmission, and one side of the connecting rod (27) is connected to the rotating ring (242).
5. A self-propelled tree pruning device for municipal engineering according to claim 1, characterized in that: The fixing ring (271) adopts a semi-circular structure design, and the two fixing rings (271) are used together.
6. A self-propelled tree pruning device for municipal engineering according to claim 2, characterized in that: The mounting base (21) is fixedly installed at the center of the top of the base (11).
7. A self-propelled tree pruning device for municipal engineering according to claim 2, characterized in that: The control device (13) is connected to the electric wheel (12), the drive motor (26), the small cutting blade (274), and the large cutting blade (275).
Citation Information
Patent Citations
Nursery stock pruning device for municipal engineering
CN219761986U