Light electric drive remote control type eucalyptus pruning equipment

Abstract

The invention relates to the technical field of forestry equipment, and particularly discloses a light electric-drive remote-control eucalyptus pruning device, which comprises a climbing structure, which is composed of a support frame and two crawler-type moving assemblies symmetrically arranged on two sides of the support frame at 90 degrees; the cutting structure is arranged on the front portion of the climbing structure and comprises a main cutting tool arm arranged on the top of the supporting frame and side cutting tool arms symmetrically distributed on the outer sides of the two crawler-type moving assemblies; the limiting structure comprises a hydraulic mechanism fixed to the supporting frame, a limiting rod rotationally connected with the crawler-type moving assembly on any side and a limiting wheel arranged at the end of the limiting rod, a triangular plate is hinged to the output end of the hydraulic mechanism, the first end of the triangular plate is hinged to the limiting rod, and the second end of the triangular plate is connected with the surface of the limiting rod through a spring; through combination of electric-drive remote control and the right-angle crawler climbing system, efficient and accurate pruning of eucalyptus high-altitude side branches is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of forestry equipment, and in particular relates to light electric-driven remote-controlled eucalyptus pruning equipment. Background Art

[0002] Eucalyptus is highly adaptable, produces excellent wood, has a wide range of uses, and offers significant benefits. After decades of domestication, improvement, and breeding, eucalyptus has become the fastest-growing, largest-scale, and best-localized fast-growing, high-yield imported timber species in South China. However, eucalyptus has a strong natural pruning ability, and the lower canopy branches typically begin to die and fall off after 1 to 3 years. Completely fallen, dead lateral branches form holes in the trunk; partially fallen, dead lateral branches leave stumps on the trunk. As the tree grows, the remaining stumps become encased in the trunk. Both holes and stumps are defects in the trunk. When the wood is processed into primary wood products, the holes and stumps become completely exposed as the logs are sawn, not only affecting the quality of the wood but also severely reducing its processing properties, appearance grade, and length. Therefore, eucalyptus lateral branches need to be pruned before they die and fall off to avoid the formation of holes and dead knots.

[0003] Currently, eucalyptus pruning mainly relies on the following technologies, but they all have significant drawbacks:

[0004] Manual tools rely on manual climbing, which limits the working height, is unsafe, takes a long time to work per plant, has a high labor cost ratio, and is affected by seasonal labor fluctuations;

[0005] Semi-mechanized equipment is bulky and difficult to adapt to hilly terrain. The cutting mechanism cannot adapt to the curvature of the tree trunk. The stubble residue rate is greater than 20%, and the time spent on movement and positioning accounts for 70%, resulting in insufficient daily work output.

[0006] Fixed automatic pruning machines are only suitable for standardized plantations and cannot adapt to the diameter differences of eucalyptus trees growing naturally, and the equipment compatibility is poor. Summary of the Invention

[0007] The object of the present invention is to provide a lightweight electric-driven remote-controlled eucalyptus pruning equipment to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A lightweight, electric-driven, remote-controlled eucalyptus pruning device comprising: a climbing structure consisting of a support frame and two crawler-type moving assemblies symmetrically arranged at 90 degrees on either side of the support frame;

[0010] The cutting structure is arranged at the front of the climbing structure, and includes a main cutting blade arm arranged at the top of the support frame and side cutting blade arms symmetrically distributed on the outside of the two crawler-type moving assemblies;

[0011] The limiting structure includes a hydraulic mechanism fixed to the support frame, a limiting rod rotatably connected to the crawler-type moving assembly on either side, and a limiting wheel arranged at the end of the limiting rod. The output end of the hydraulic mechanism is hinged with a triangular plate, the first end of the triangular plate is hinged to the limiting rod, and the second end is connected to the surface of the limiting rod through a spring.

[0012] Preferably, the crawler-type moving assembly includes a support frame, a pair of transmission wheels arranged at both ends of the support frame, a moving crawler wound around the transmission wheels, and a motor driving one of the transmission wheels, and the motor is connected to the transmission wheel through a drive shaft.

[0013] Preferably, the main cutting knife arm includes a main support base fixed on the top of the support frame and a main arc-shaped cutter symmetrically hinged on both sides of the main support base.

[0014] Preferably, the non-blade portion of the main arc-shaped cutter is provided with a main gear, and the main support seat is provided with a main drive plate meshing with the main gear, and the main drive plate has an arc-shaped end portion with meshing teeth.

[0015] Preferably, the side cutting knife arm includes a side support seat fixed to the support frame and a side arc-shaped cutter hinged to the side support seat.

[0016] Preferably, the non-blade portion of the side arc cutter is provided with a side gear, and the side support seat is provided with a side drive plate meshing with the side gear, and the side drive plate has an arc-shaped end portion with meshing teeth.

[0017] Preferably, the main support seat and the side support seat are both provided with a pushing member for pushing the main drive plate and the side drive plate to rotate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention achieves efficient and precise pruning of eucalyptus side branches at high altitudes through the combination of electric remote control and a right-angle crawler climbing system. The equipment is driven by dual high-speed brushless motors, and the climbing speed and working height are both improved. The embracing manganese steel sliding prying knife arm is combined with a hydraulic dynamic limiting structure to ensure that the cutting surface is close to the tree trunk, reducing the stubble residual rate, and avoiding the risks of high-altitude operations through remote control operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is one of the three-dimensional diagrams of the present invention;

[0021] Figure 2 This is the second stereogram of the present invention;

[0022] Figure 3 This is the third stereogram of the present invention;

[0023] Figure 4 This is the fourth stereogram of the present invention;

[0024] In the figure: 1. Support frame; 2. Crawler moving assembly; 3. Main cutting knife arm; 4. Side cutting knife arm; 5. Hydraulic mechanism; 6. Limit rod; 7. Limit wheel; 8. Triangular plate; 9. Spring; 21. Support frame; 22. Drive wheel; 23. Moving crawler; 24. Motor; 31. Main support seat; 32. Main arc cutter; 33. Main gear; 34. Main drive plate; 41. Side support seat; 42. Side arc cutter; 43. Side gear; 44. Side drive plate. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example 1:

[0027] See also Figure 1-Figure 4 As shown, the lightweight electric drive remote control eucalyptus pruning equipment includes:

[0028] The climbing structure consists of a support frame 1 and two crawler-type moving components 2 arranged symmetrically at 90 degrees on both sides of the support frame 1;

[0029] The cutting structure is arranged at the front of the climbing structure, and includes a main cutting blade arm 3 arranged on the top of the support frame 1 and side cutting blade arms 4 symmetrically distributed on the outside of the two crawler-type moving components 2;

[0030] The limiting structure includes a hydraulic mechanism 5 fixed to the support frame 1, a limiting rod 6 rotatably connected to the crawler-type moving assembly 2 on either side, and a limiting wheel 7 provided at the end of the limiting rod 6. The output end of the hydraulic mechanism 5 is hinged to a triangular plate 8, the first end of which is hinged to the limiting rod 6, and the second end is connected to the surface of the limiting rod 6 through a spring 9;

[0031] When the equipment climbs, the hydraulic mechanism 5 pushes the triangular plate 8, driving the limiting rod 6 and the limiting wheel 7 to stick to the surface of the tree trunk. The friction force of the embracing wheel is adjusted by adaptive pressure to ensure the stable attachment of the equipment under different tree trunk diameters.

[0032] In one embodiment of the present invention, the crawler-type moving assembly 2 includes a support frame 21, a pair of transmission wheels 22 disposed at both ends of the support frame 21, a moving crawler 23 wound around the transmission wheels 22, and a motor 24 driving one of the transmission wheels 22. The motor 24 is connected to the transmission wheel 22 via a drive shaft 25.

[0033] Motor 24 is connected to drive wheel 22 via drive shaft 25, enabling crawler-type mobile assembly 2 to climb or descend. Motor 24 is a dual high-speed brushless motor, each weighing 800 grams, with a maximum power of 5000 watts and a speed of up to 20,000 revolutions per minute, ensuring the device can steadily climb tree trunks at a speed of 8 meters per second.

[0034] In one embodiment of the present invention, the main cutting blade arm 3 includes a main support base 31 fixed to the top of the support frame 1 and main arc-shaped cutting blades 32 symmetrically hinged on both sides of the main support base 31 .

[0035] In one embodiment of the present invention, a main gear 33 is provided on the non-blade portion of the main arc cutter 32 , and a main drive plate 34 meshing with the main gear 33 is provided in the main support seat 31 . The main drive plate 34 has an arc-shaped end with meshing teeth.

[0036] In one embodiment of the present invention, the side cutting knife arm 4 includes a side support seat 41 fixed to the support frame 21 and a side arc-shaped cutter 42 hinged to the side support seat 41;

[0037] The mobile track 23 is constructed of aramid fiber-reinforced rubber composite material with a tensile strength of ≥200 MPa. Its surface features a diamond-shaped anti-slip pattern and a friction coefficient of μ = 0.8-1.2. The main and side curved cutters 32 / 42 are inlaid with YG8 carbide, with a 25° blade angle and reusable grinding capabilities. The gear sets 33 / 43 are nitrided to a surface hardness of ≥HV800, and can withstand 10^6 cutting cycles over their lifespan.

[0038] In one embodiment of the present invention, a side gear 43 is provided on the non-blade portion of the side arc cutter 42 , and a side driving plate 44 meshing with the side gear 43 is provided in the side support seat 41 . The side driving plate 44 has an arc-shaped end portion with meshing teeth.

[0039] In one embodiment of the present invention, a pusher is provided on each of the main support seat 31 and the side support seat 41 for pushing the main drive plate 34 and the side drive plate 44 to rotate. The arc-shaped end of the main drive plate 34 drives the main gear 33 to rotate through meshing teeth, thereby closing or expanding the main arc-shaped cutter 32.

[0040] The pusher is a linear push rod driven by a micro-servo motor, integrated into the main support base 31 and the side support base 41. The end of the push rod is connected to the main drive plate 34 and the side drive plate 44 via an articulated mechanism. When the main control module sends a cutting command, the servo motor drives the push rod in reciprocating linear motion, rotating the arc-shaped meshing teeth of the drive plate, which in turn drives the main gear 33 and the side gear 43. The push rod has a designed stroke of 0-50mm and a thrust range of 50-100N. The driving force can be adaptively adjusted according to the diameter of the branch to ensure that the closing angle of the cutting blade arm matches the curvature of the trunk.

[0041] As can be seen from the above, during use, the operator sends a start signal through the handheld remote control, the equipment main control module (integrated inside the support frame 1) receives the command, activates the motor 24 and the hydraulic mechanism 5, and the remote control displays the equipment height, battery status and cutting parameters in real time;

[0042] The dual high-speed brushless motors 24 are energized, driving the transmission wheel 22 to rotate via the drive shaft 25, driving the mobile crawler 23 to contact the surface of the tree trunk. The motors 24 of the crawler-type mobile assemblies 2 on both sides run at the same speed. The crawler tracks arranged symmetrically at 90 degrees clamp the tree trunk, generating upward friction and pushing the equipment to climb vertically along the trunk. The remote control's stepless speed regulation function adjusts the speed of the motor 24 to control the climbing speed to 0-8 meters per second, which is adaptively adjusted according to the roughness of the tree trunk.

[0043] At the same time, the hydraulic mechanism 5 is activated, pushing the triangular plate 8 to rotate around the hinge point. The first end of the triangular plate 8 pulls the limiting rod 6 to swing toward the trunk, so that the limiting wheel 7 is close to the surface of the trunk. The spring 9 swings and retracts with the limiting rod 6, dynamically compensating for changes in the trunk diameter, ensuring that the limiting wheel 7 always applies constant pressure to prevent the equipment from slipping or deflecting.

[0044] The device has a built-in height sensor that detects the climbing height in real time. When the pruning height preset by the remote controller is reached, the main control module sends a stop command, the motor 24 is powered off, the crawler tracks stop moving, the main drive plate 34 and the side drive plate 44 are powered on, driving the main gear 33 and the side gear 43 to rotate, causing the main curved cutter 32 and the side curved cutter 42 to unfold from the support base to the initial cutting angle;

[0045] The meshing teeth arc end of the main drive plate 34 drives the main gear 33 to rotate, driving the main arc cutter 32 to close towards the center of the trunk. The cutting edge slides into the base of the side branches at a 30° R angle. The side cutting knife arms move synchronously. After the cutting is completed, the drive plate pushes the gear in the opposite direction, causing the main / side arc cutters to return to the expanded state and leave the trunk surface.

[0046] The remote control sends a continue climbing command, the motor 24 restarts, and the device climbs to the next preset height. The above steps are repeated. After all pruning is completed, the remote control switches to the descending mode, the motor 24 reverses, and the device descends to the ground at a uniform speed along the trunk. The limit wheel 7 continues to apply pressure to prevent loss of control.

[0047] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. Lightweight electric drive remote control eucalyptus pruning equipment, characterized by: include: The climbing structure is composed of a support frame (1) and two crawler-type moving components (2) arranged symmetrically at 90 degrees on both sides of the support frame (1); The cutting structure is arranged at the front of the climbing structure, and comprises a main cutting blade arm (3) arranged at the top of the support frame (1) and side cutting blade arms (4) symmetrically distributed on the outside of the two crawler-type moving assemblies (2); The limiting structure comprises a hydraulic mechanism (5) fixed to a support frame (1), a limiting rod (6) rotatably connected to a crawler-type moving assembly (2) on either side, and a limiting wheel (7) arranged at the end of the limiting rod (6); the output end of the hydraulic mechanism (5) is hinged with a triangular plate (8); the first end of the triangular plate (8) is hinged to the limiting rod (6), and the second end is connected to the surface of the limiting rod (6) through a spring (9).

2. The lightweight electric-driven remote-controlled eucalyptus pruning equipment according to claim 1, characterized in that: The crawler-type moving assembly (2) comprises a supporting frame (21), a pair of transmission wheels (22) arranged at both ends of the supporting frame (21), a moving crawler (23) wound around the transmission wheels (22), and a motor (24) driving one of the transmission wheels (22), wherein the motor (24) is connected to the transmission wheel (22) via a driving shaft (25).

3. The lightweight electric-driven remote-controlled eucalyptus pruning equipment according to claim 1, characterized in that: The main cutting knife arm (3) comprises a main support seat (31) fixed on the top of the support frame (1) and main arc-shaped cutting knives (32) symmetrically hinged on both sides of the main support seat (31).

4. The lightweight electric-driven remote-controlled eucalyptus pruning equipment according to claim 3, characterized in that: The non-blade portion of the main arc-shaped cutter (32) is provided with a main gear (33), and the main support seat (31) is provided with a main drive plate (34) meshing with the main gear (33), and the main drive plate (34) has an arc-shaped end with meshing teeth.

5. The lightweight electric-driven remote-controlled eucalyptus pruning equipment according to claim 1, characterized in that: The side cutting knife arm (4) comprises a side support seat (41) fixed to the support frame (21) and a side arc-shaped cutting knife (42) hinged to the side support seat (41).

6. The lightweight electric-driven remote-controlled eucalyptus pruning equipment according to claim 5, characterized in that: The non-blade portion of the side arc-shaped cutter (42) is provided with a side gear (43), and the side support seat (41) is provided with a side drive plate (44) meshing with the side gear (43), and the side drive plate (44) has an arc-shaped end portion with meshing teeth.

7. The lightweight electric-driven remote-controlled eucalyptus pruning equipment according to claim 1, characterized in that: The main support seat (31) and the side support seat (41) are both provided with a pushing member for pushing the main drive plate (34) and the side drive plate (44) to rotate.

Images