Portable ancient tree crown tidying tool
By designing a portable tool for pruning ancient tree crowns, which utilizes a servo motor and an electric push rod motor working in tandem, the tool achieves stable clamping and precise cutting of branches, solving the problem of branches falling during pruning and improving safety and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING MINGMU CHENGSEN FAMOUS TREES CONSERVATION ENG CO LTD
- Filing Date
- 2025-02-24
- Publication Date
- 2026-05-05
AI Technical Summary
When pruning the crowns of ancient trees, dead, diseased, and crossing branches are prone to falling after being cut, causing damage to intact branches and operators. Existing high-branch pruning equipment poses a safety hazard.
A portable tool for pruning the crowns of ancient trees has been designed, which includes a crown clamping mechanism and a lifting and lowering pruning mechanism. It utilizes a servo motor and an electric push rod motor to work together to achieve stable clamping and precise cutting of branches, preventing branches from falling.
This effectively prevents damage to intact branches and operators from the cut branches, improving the safety and precision of the pruning process.
Smart Images

Figure CN224192540U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ancient tree maintenance technology, specifically to a portable tool for tidying up the crowns of ancient trees. Background Technology
[0002] Ancient trees, as an important part of the natural landscape, directly affect the aesthetics of their surroundings through the shape and health of their crowns. Crown pruning removes dead, diseased, and crossing branches, and helps in the timely detection and treatment of pests and diseases within the crown of ancient trees. Pruning affected branches prevents the further spread of pests and diseases, protecting the health of the ancient tree. Currently, high-branch pruning equipment is commonly used for pruning dead, diseased, and crossing branches. However, because these branches lack support after pruning, they fall directly, easily breaking healthy, budding branches below and causing damage to the ancient tree. Therefore, we propose a portable tool for pruning the crowns of ancient trees. Utility Model Content
[0003] In view of the above-mentioned technical problems in related technologies, this utility model provides a portable tool for pruning the crowns of ancient trees, which can solve the above problems.
[0004] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows:
[0005] A portable tool for pruning the crowns of ancient trees, including a housing, a crown clamping mechanism located on the top of the housing, and a liftable pruning mechanism located on one side of the housing;
[0006] The canopy clamping mechanism includes a double claw bar fixed to one side of the top of the machine housing, a single claw bar hinged to the other side of the top of the machine housing, and a servo motor that drives the single claw bar to rotate.
[0007] The liftable trimming mechanism includes a small cutter, an L-shaped support for supporting the small cutter, and an electric push rod motor for driving the L-shaped support to lift.
[0008] An extension rod is provided at the bottom of the machine housing, and a servo controller, a cutting controller, and an electric push rod controller are fixedly mounted on the surface of the extension rod.
[0009] Furthermore, a gap is provided in the middle of the double claw bar, and the gap between the single claw bar and the double claw bar is horizontally aligned.
[0010] Furthermore, a ring is fixedly installed at the bottom of the single claw lever, and a rotating shaft is rotatably installed inside the housing. The rotating shaft is connected to the inner wall of the ring via a key. A gear is coaxially installed on the motor shaft of the servo motor, and a toothed body that meshes with the gear is integrally formed on the outer wall of the ring.
[0011] Furthermore, a T-shaped track is fixedly installed on one side of the outer wall of the machine casing, and a T-shaped groove matching the T-shaped track is opened on one side of the L-shaped support.
[0012] Furthermore, a threaded hole is provided at the bottom of the housing, and a threaded rod is integrally formed at the top of the extension rod, which is threadedly connected to the bottom of the housing.
[0013] Furthermore, rubber pads are fixedly installed on the inner walls of both the single-claw bar and the double-claw bar.
[0014] The beneficial effects of this utility model are as follows: Before pruning branches, the device uses a servo motor to drive a single claw bar in conjunction with a double claw bar to clamp the branches. Then, when the electric push rod motor pushes the small cutter upward to cut the branches, the cut branches will be clamped, which prevents the branches that fall during pruning from impacting and damaging the intact branches, and at the same time protects the operator on the ground.
[0015] The small cutter is located near the clamping structure. It only requires controlling the small cutter to lift a short distance to trim the specified clamped branch, reducing accidental damage to surrounding branches. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] The present invention will now be described in further detail with reference to the accompanying drawings.
[0018] Figure 1 This is a perspective view of the portable ancient tree crown trimming tool described in this embodiment of the utility model;
[0019] Figure 2 This is a cross-sectional view of the housing described in an embodiment of this utility model.
[0020] In the picture:
[0021] 1. Extension rod; 2. Servo controller; 3. Cutting controller; 4. Electric linear actuator controller; 5. Power cord; 6. Machine housing; 7. Electric linear actuator motor; 8. L-shaped support; 9. Miniature cutter; 10. Servo motor; 11. Double claw rod; 12. Single claw rod; 13. T-shaped track; 14. Ring body; 15. Gear. Detailed Implementation
[0022] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.
[0023] like Figure 1-2 As shown, this utility model discloses a portable ancient tree crown trimming tool, including a housing 6, a crown clamping mechanism disposed on the top of the housing 6, and a liftable pruning mechanism disposed on one side of the housing 6;
[0024] The canopy clamping mechanism includes a double claw rod 11 fixed to one side of the top of the housing 6, a single claw rod 12 hinged to the other side of the top of the housing 6, and a servo motor 10 that drives the single claw rod 12 to rotate. A ring body 14 is fixedly installed at the bottom of the single claw rod 12. A rotating shaft is rotatably installed inside the housing 6. The rotating shaft is connected to the inner wall of the ring body 14 by a key. A gear 15 is coaxially installed on the motor shaft of the servo motor 10. A tooth body that meshes with the gear 15 is integrally formed on the outer wall of the ring body 14.
[0025] The liftable trimming mechanism includes a small cutter 9, an L-shaped support 8 for supporting the small cutter 9, and an electric push rod motor 7 for driving the L-shaped support 8 to lift.
[0026] An extension rod 1 is provided at the bottom of the machine housing 6, and a servo controller 2, a cutting controller 3 and an electric push rod controller 4 are fixedly installed on the surface of the extension rod 1.
[0027] Example 1: Inside the housing 6, a shaft is rotatably mounted via bearings. The shaft is connected to the ring 14 below the single claw rod 12 via a key. The gear 15, coaxially connected to the motor shaft of the servo motor 10, meshes with the teeth on the surface of the ring 14. The servo motor 10 is electrically connected to the servo controller 2. The servo motor 10, the electric push rod motor, and the small cutter 9 are all integrated on the power controller. The power controller is connected to the power line 5. After the power line 5 draws power, it supplies power to the servo motor 10, the electric push rod motor, and the small cutter 9.
[0028] The gap between the double claw bars 11 is large enough to allow the single claw bar 12 to pass through, and the top of the housing 6 is provided with a relief groove to accommodate the rotation of the single claw bar 12;
[0029] T-shaped track 13 is fixed to the surface of machine housing 6. The T-shaped groove on the back of L-shaped support 8 is slidably installed on the surface of T-shaped track 13. The push rod of electric push rod motor 7 is fixed to the bottom of L-shaped support 8 by bolts. Cutting controller 3 is electrically connected to small cutter 9 by wires. Electric push rod controller 4 is electrically connected to electric push rod motor 7 by wires.
[0030] In the preferred technical solution, a gap is provided in the middle of the double claw rod 11, and the gap between the single claw rod 12 and the double claw rod 11 is horizontally aligned. The double claw rod 11 and the single claw rod 12 can stably clamp the entire part of the tree crown.
[0031] In the preferred technical solution, a T-shaped track 13 is fixedly installed on one side of the outer wall of the housing 6, and a T-shaped groove matching the T-shaped track 13 is opened on one side of the L-shaped support 8 to assist in guiding the L-shaped support 8 to move vertically and stably.
[0032] In the preferred technical solution, the bottom end of the housing 6 is provided with a threaded hole, and the top end of the extension rod 1 is integrally formed with a threaded rod. The top end of the extension rod 1 is threadedly connected to the bottom end of the housing 6, so that the housing 6 and the extension rod 1 can be separated and removed for easy storage and carrying.
[0033] In the preferred technical solution, rubber pads are fixedly provided on the inner sidewalls of both the single-claw bar 12 and the double-claw bar 11, which can increase the contact friction and improve the clamping stability.
[0034] In practical use, when the servo motor 10 rotates forward, it can slowly drive the single claw lever 12 away from the double claw lever 11. When the servo motor 10 rotates in reverse, it can slowly drive the single claw lever 12 closer to the double claw lever 11. When the lifting device reaches the designated trimming position, the single claw lever 12 needs to be brought closer to the double claw lever 11 to avoid the single claw lever 12 opening at too large an angle and hitting other tree branches, causing the tree branches to break and be damaged. When the designated position is reached, the single claw lever 12 is first driven away from the double claw lever 11. After aligning the area, the single claw lever 12 is driven closer to the double claw lever 11 to clamp the area. Then, the small cutter 9 is started, and the push rod of the electric push rod motor 7 is slowly extended, so that the small cutter 9 slowly rises to cut the end of the tree trunk that needs to be trimmed. The single claw lever 12 works with the double claw lever 11 to clamp the tail area of the tree trunk that needs to be trimmed. When the tree trunk is cut and trimmed, the small cutter 9 is turned off and the trimmed tree trunk is moved to the ground.
[0035] 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 portable tool for pruning the crowns of ancient trees, characterized in that: Includes a housing (6), a canopy clamping mechanism located on the top of the housing (6), and a liftable pruning mechanism located on one side of the housing (6); The canopy clamping mechanism includes a double claw rod (11) fixed to one side of the top of the housing (6), a single claw rod (12) hinged to the other side of the top of the housing (6), and a servo motor (10) that drives the single claw rod (12) to rotate. The liftable trimming mechanism includes a small cutter (9), an L-shaped support (8) for supporting the small cutter (9), and an electric push rod motor (7) for driving the L-shaped support (8) to lift. An extension rod (1) is provided at the bottom of the housing (6), and a servo controller (2), a cutting controller (3) and an electric push rod controller (4) are fixedly provided on the surface of the extension rod (1).
2. The portable ancient tree crown trimming tool according to claim 1, characterized in that, The double claw rod (11) has a gap in the middle, and the gap between the single claw rod (12) and the double claw rod (11) is horizontally aligned.
3. The portable ancient tree crown trimming tool according to claim 1, characterized in that, The bottom of the single claw rod (12) is fixedly provided with a ring body (14), and the machine housing (6) is rotatably provided with a rotating shaft. The rotating shaft is connected to the inner wall of the ring body (14) by a key. The motor shaft of the servo motor (10) is coaxially provided with a gear (15), and the outer wall of the ring body (14) is integrally formed with a tooth body that meshes with the gear (15).
4. The portable ancient tree crown trimming tool according to claim 1, characterized in that, A T-shaped track (13) is fixedly installed on one side of the outer wall of the housing (6), and a T-shaped groove matching the T-shaped track (13) is opened on one side of the L-shaped support (8).
5. The portable ancient tree crown trimming tool according to claim 1, characterized in that, The bottom of the housing (6) is provided with a threaded hole, and the top of the extension rod (1) is integrally formed with a threaded rod. The top of the extension rod (1) is threadedly connected to the bottom of the housing (6).
6. The portable ancient tree crown trimming tool according to claim 1, characterized in that, Rubber pads are fixedly installed on the inner sidewalls of both the single claw rod (12) and the double claw rod (11).