Working head of waste cutting machine and tree cutting method thereof

Abstract

According to the operation head of the waste cutting machine, it is guaranteed that the transverse push rod can adapt to the diversity of the thickness and shape of tree trunks to bend the tree trunks, the transverse posture of the transverse push rod is adjusted in the process that the trees are gradually toppled, the transverse push rod is pushed to follow and press the tree trunks, the reaction in the tree trunk toppling process is resisted, and the roller cutter head keeps the stable transverse posture; it is guaranteed that the roller cutter head accurately exerts force on the tree, position deviation and invalid cutting during cutting are reduced, the cutting efficiency is improved, the cutting adaptability of the operation head is improved, the forward toppling angle of the cut tree is controlled, tree toppling is accelerated, and the cutting efficiency is improved. The disassembly and assembly assembly is used for achieving rapid butt joint with or disengagement from the machine frame, the maintenance convenience and efficiency of the operation head are improved, the secondary cutting plate is installed in the machine frame, secondary crushing of chippings is achieved, the chipping uniformity is improved, accumulation of the chippings in the machine frame is reduced, the running resistance of the roller cutter head is reduced, the roller is prevented from being stuck, energy is saved, and the fault rate of the operation head is reduced.

Description

Land clearing machine working head and its tree cutting method Technical Field

[0001] This invention relates to a land clearing machine working head and its tree cutting method, belonging to the field of land clearing machine technology. Background Technology

[0002] A land clearing machine is a type of land clearing machinery used to clear shrubs, weeds, and other vegetation. It is widely used in agricultural land clearing, transportation construction, and building construction. A land clearing machine consists of a mobile chassis and a working head mounted at the front of the chassis. The working head mainly includes a frame, a roller cutter head, and a front horizontal push rod. The frame is connected to the main body of the land clearing machine and its height is adjustable. The roller cutter head is equipped with crushing teeth. The high-speed rotation of the roller cutter head causes the crushing teeth to cut the shrubs and throw out wood chips during high-speed rotation. The front horizontal push rod is used to push down weeds in front, bend trees, and prevent trees from falling to one side of the land clearing machine during cutting. The existing land clearing machine working heads have the following problems: 1. Due to the variety of tree trunks in size and shape, the front cross push rod cannot adapt to the diversity of trees. As a result, the cross push rod cannot effectively bend the tree before cutting, and the cross push rod cannot form a stable contact with the tree trunk during cutting. During intense cutting, as the tilt angle and falling direction of the tree change, the front cross push rod will detach from the tree or be supported by the tree trunk. The reaction force of the tree trunk on the roller cutter head or the front cross push rod will change the posture of the working head, making it impossible for the cutter to accurately apply force, resulting in the offset of the cutting position and ineffective cutting, reducing cutting efficiency. The working head has poor land clearing adaptability and high requirements for the cutting object.

[0003] 2. The rollers, cutters, and hydraulic drive components inside the working head all require cleaning, maintenance, or replacement. The working head is large and heavy, and in order to adjust the pitch angle of the working head, it is generally connected to the main frame through a hydraulic cylinder, which makes it inconvenient to disassemble and assemble the working head, reducing the convenience and efficiency of the working head maintenance.

[0004] 3. The unreasonable distribution of cutters on the drum cutter head results in low cutting efficiency. During the cutting process, some plants or wood chips cannot be fully crushed, resulting in wood chips with larger lengths or diameters. When thrown out, these chips tend to accumulate between the drum cutter head and the frame, increasing the running resistance of the drum cutter head and even causing the drum to jam. This wastes energy and increases the failure rate of the cutting head. Summary of the Invention

[0005] The land clearing machine head and its tree cutting method provided by this invention maintain a stable lateral posture of the drum cutter head, accurately applying force to the tree, reducing positional deviation and ineffective cutting during cutting, improving the land clearing adaptability of the head, shortening cutting time, increasing land clearing efficiency, improving the maintenance convenience and efficiency of the head, achieving secondary crushing of debris, avoiding drum jamming, saving energy, and reducing the failure rate of the head. This invention also provides a tree cutting method for the land clearing machine head.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a land clearing machine working head, including a frame, a roller cutter head mounted in the frame, and a lifting arm connected to the land clearing machine chassis and symmetrically arranged on the left and right sides, characterized in that: it further includes an angle adjustment connecting mechanism mounted at the front end of the lifting arm and a lateral stabilizing mechanism mounted on the top of the frame, the angle adjustment connecting mechanism including a connecting frame hinged to the front end of the lifting arm, a lateral connecting block fixed between the two connecting frames, an angle adjustment cylinder hinged between the lateral connecting block and the lifting arm, and a disassembly and assembly component mounted in the connecting frame that can quickly connect or disconnect from the frame, the lateral stabilizing mechanism including a horizontal push rod horizontally arranged above the frame, and a hydraulic swing component hinged between the end of the horizontal push rod and the frame and capable of driving the end of the horizontal push rod to swing back and forth.

[0007] Preferably, the transverse connecting block is fixed to the rear end of the connecting frame and close to the back of the frame. The front end of the angle adjustment cylinder is hinged to the top of the transverse connecting block, and the rear end is hinged to the lifting arm. The rear end of the disassembly and assembly component extends through the connecting frame from the transverse connecting block, and the front end extends out of the connecting frame and docks with the frame. The front end of the disassembly and assembly component retracts into the connecting frame and disengages from the frame as its rear end rotates.

[0008] Preferably, the disassembly assembly includes an upper movable rod that guides the top of the connecting frame, a lower movable rod that guides the bottom of the connecting frame and is aligned with the upper movable rod, an upper connecting rod hinged to the lower end of the upper movable rod, a lower connecting rod hinged to the upper end of the lower movable rod, a crank hinged between the upper and lower connecting rods, and a rotating rod fixed at the center of the crank. The rear end of the rotating rod extends through the connecting frame from the transverse connecting block, and the rear end of the rotating rod is hexagonal in shape that can cooperate with a rotating wrench. The upper and lower movable rods extend from the connecting frame to connect with the frame or retract into the connecting frame to disengage from the frame as the rotating rod rotates.

[0009] Preferably, the hydraulic swing assembly includes a swing arm and a hydraulic rod. The upper end of the swing arm is hinged to the end of the horizontal push rod, and the lower end is hinged to the frame. The telescopic end of the hydraulic rod is hinged to the swing arm, and the lower end is hinged to the frame. The swing arm drives the end of the horizontal push rod to swing as the hydraulic rod extends and retracts.

[0010] Preferably, the swing arm has multiple hinge holes from top to bottom, the telescopic end of the hydraulic rod is equipped with connecting lugs corresponding to the hinge holes, and the horizontal push rod has saw teeth that contact the workpiece being cut.

[0011] Preferably, the frame is equipped with a secondary cutting plate located behind the drum cutter head, and the bottom rear end of the frame is equipped with a chip-laying chain ring evenly distributed in the transverse direction. The secondary cutting plate has cutting edges evenly distributed in the transverse direction opposite to the drum cutter head, and the cutting edges are arc-shaped protruding towards one side of the drum cutter head.

[0012] Preferably, the upper end of the secondary cutting plate is hinged to the frame, and the lower end abuts against the adjusting bolt on the frame. The tilt angle of the secondary cutting plate is adjusted as the adjusting bolt rotates.

[0013] Preferably, the drum cutter disc includes a drum, a cutter holder, a toothed cutter mounted on the cutter holder, and a hydraulic drive unit that drives the drum to rotate. The drum has annular grooves evenly distributed along the axial direction. The cutter holders are mounted between adjacent annular grooves and are symmetrically distributed along positive and negative spiral lines on the drum. The hydraulic drive unit is connected to the shaft of the drum via a drive connection.

[0014] Preferably, the hydraulic drive component includes a hydraulic motor mounted on the frame, a drive gear mounted on the output end of the hydraulic motor, a driven gear fixed to the shaft head of the roller, a chain connecting the drive gear and the driven gear, and a tensioning wheel for tensioning the chain. The axle of the tensioning wheel is connected to the frame via a tensioning bolt, and the chain is tensioned as the tensioning bolt is adjusted.

[0015] The tree cutting method of the land clearing machine working head described above is characterized by: firstly, adjusting the position of the horizontal push rod with the hydraulic swing assembly, pressing the horizontal push rod against the tree and bending it, and then starting the drum cutter head to cut the tree. When the tree falls, the movement of the hydraulic swing assembly at both ends of the horizontal push rod adjusts the lateral posture of the horizontal push rod, pushing the horizontal push rod to follow and press against the tree trunk, so that the drum cutter head maintains a stable lateral posture and controls the angle at which the tree being cut falls forward.

[0016] The beneficial effects of this invention are as follows: In the lateral stabilization mechanism of the land clearing machine's working head, the end of the horizontal push rod is connected to a hydraulic swing assembly. Driven by the hydraulic swing assembly, the end of the horizontal push rod swings back and forth. Before cutting, the position of the horizontal push rod is adjusted by the hydraulic swing assembly, which adjusts the forward extension size and height of the horizontal push rod to ensure that it can adapt to the diverse thickness and shape of the tree trunk and bend it. As the tree gradually falls, the two sets of hydraulic swing assemblies move independently to adjust the lateral posture of the horizontal push rod, pushing it to follow and press against the tree trunk, preventing the horizontal push rod from detaching from the trunk or being supported by it. The clamping force of the horizontal push rod on the tree trunk counteracts the reaction force acting on the roller cutter head and the horizontal push rod during the tree trunk's fall, maintaining a stable lateral posture of the roller cutter head. This ensures accurate application of the roller cutter head to the tree, reducing positional deviation and ineffective cutting, improving cutting efficiency, enhancing the adaptability of the work head to different types of objects, and reducing the requirements of the work head on the objects being cut, thus improving its practicality. Furthermore, the hydraulic swing components at both ends of the horizontal push rod can adjust the lateral posture of the push rod, controlling the angle at which the tree is being cut falls forward, accelerating the fall, shortening cutting time, and improving land clearing efficiency. An angle adjustment connecting mechanism is installed at the front end of the lifting arm, allowing for quick docking or disengagement with the frame using a disassembly assembly. This improves the convenience of connecting and disassembling the frame and the robotic arm, enhancing the ease and efficiency of work head maintenance. The angle adjustment cylinder is hinged between the lateral connecting block and the lifting arm, ensuring that the quick disassembly of the frame and the robotic arm is not affected. The cylinder can also adjust the pitch angle of the roller cutter head to control the cutting position of the roller cutter on the object being cut, reducing cutting resistance and improving cutting efficiency.

[0017] A secondary cutting plate is installed inside the frame, located behind the drum cutter head. Cutting edges are evenly distributed along the transverse direction on the secondary cutting plate, opposite to the drum cutter head. During cutting, the drum cutter head first cuts the workpiece. As the drum cutter head rotates at high speed, the debris is thrown to the discharge end of the frame and collides with the secondary cutting plate. The debris is cut again by the cutting edges on the secondary cutting plate, reducing the particle size or length of the debris, thus achieving secondary crushing of the debris. The tilt angle of the cutting edges can be adjusted by adjusting bolts on the frame to ensure that the cutting edges can match the trajectory of the debris thrown out when the drum cutter head rotates, thereby improving the cutting rate of secondary cutting. The secondary cutting plate acts like an adjustable "gate" to control the final discharge particle size of the debris, improve the uniformity of the debris, reduce the accumulation of debris in the frame, reduce the running resistance of the drum cutter head, avoid drum jamming, save energy, and reduce the failure rate of the working head. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the land clearing machine working head of the present invention.

[0019] Figure 2 is a schematic diagram of the angle adjustment connection mechanism installed at the front end of the lifting arm.

[0020] Figure 3 is a schematic diagram of the combination of the horizontal connecting block, connecting frame and disassembly components.

[0021] Figure 4 is a schematic diagram showing the interaction between the rotating wrench and the crank's rotating rod.

[0022] Figure 5 is a schematic diagram of the roller cutter and the lateral stabilizing mechanism mounted on the frame.

[0023] Figure 6 is a schematic diagram of the lateral stabilizing mechanism.

[0024] Figure 7 is a schematic diagram showing the included angle α between the two pendulum rods.

[0025] Figure 8 is a reverse view of Figure 5.

[0026] Figure 9 is a cross-sectional view of Figure 5.

[0027] Figure 10 is a schematic diagram of a drum cutter head.

[0028] Figure 11 is a schematic diagram of the hydraulic drive components. Detailed Implementation

[0029] The embodiments of the present invention will now be described in detail with reference to Figures 1-10.

[0030] The land clearing machine operating head includes a frame 1, a roller cutter head 2 mounted in the frame 1, and a lifting arm 3 connected to the land clearing machine chassis and symmetrically arranged on the left and right sides. Its features include: an angle adjustment connecting mechanism mounted on the front end of the lifting arm 3 and a lateral stabilizing mechanism mounted on the top of the frame. The angle adjustment connecting mechanism includes a connecting frame 4 hinged to the front end of the lifting arm 3, a lateral connecting block 5 fixed laterally between the two connecting frames 4, an angle adjustment cylinder 6 hinged between the lateral connecting block 5 and the lifting arm 3, and a disassembly / assembly assembly 7 mounted in the connecting frame 4 that can quickly connect or disconnect from the frame 1. The lateral stabilizing mechanism includes a horizontal push rod 8 horizontally arranged diagonally above the frame 1, and a hydraulic swing assembly 9 hinged between the end of the horizontal push rod 8 and the frame 1, which can drive the end of the horizontal push rod 8 to swing back and forth.

[0031] The above-described land clearing machine working head has a horizontal stabilizing mechanism in which the end of the horizontal push rod 8 is connected to a hydraulic swing assembly 9. Driven by the hydraulic swing assembly 9, the end of the horizontal push rod 8 swings back and forth. Before cutting, the position of the horizontal push rod 8 is adjusted by the hydraulic swing assembly 9, adjusting both the forward extension size and height of the horizontal push rod to ensure it can adapt to the diverse thickness and shape of the tree trunk and bend it. As the tree gradually falls, the two sets of hydraulic swing assemblies 9 move independently to adjust the lateral posture of the horizontal push rod 8, pushing it to follow and press against the tree trunk, preventing the horizontal push rod 8 from detaching from the trunk or being supported by it. The pressing force of the horizontal push rod 8 on the tree trunk resists the reaction force acting on the roller cutter head 2 and the horizontal push rod 8 during the tree trunk falling process, so that the roller cutter head 2 maintains a stable lateral posture, ensuring that the roller cutter head 2 accurately applies force to the tree, reducing positional deviation and ineffective cutting during cutting, improving cutting efficiency, improving the land clearing adaptability of the work head, reducing the requirements of the work head on the cutting object, and improving its practicality. Moreover, the hydraulic swing components at both ends of the horizontal push rod 8 can also control the angle at which the tree being cut falls forward by adjusting the lateral posture of the horizontal push rod, accelerating the falling of the tree, shortening the cutting time, and improving land clearing efficiency. An angle adjustment connection mechanism is installed at the front end of the lifting arm 3. The disassembly and assembly component 7 enables quick docking or disassembly with the frame, improving the convenience of connecting and disassembling the frame 1 and the robotic arm 3, and improving the maintenance convenience and efficiency of the working head. The angle adjustment cylinder 6 is hinged between the transverse connecting block 5 and the lifting arm 3, which will not affect the quick disassembly of the frame 1 and the robotic arm 3. The pitch angle of the roller cutter head 2 can be adjusted by the angle adjustment cylinder 6 to control the cutting position of the roller cutter on the workpiece, reduce cutting resistance, and improve cutting efficiency.

[0032] The transverse connecting block 5 is fixed to the rear end of the connecting frame 4 and close to the back of the frame 1. The front end of the angle adjusting cylinder 6 is hinged to the top of the transverse connecting block 5, and the rear end is hinged to the lifting arm 3. The rear end of the disassembly assembly 7 extends through the connecting frame 4 from the transverse connecting block 5, and the front end extends out of the connecting frame 4 and docks with the frame. The front end of the disassembly assembly 7 retracts into the connecting frame and disengages from the frame as its rear end rotates. Two angle adjusting cylinders 6 are arranged in the front-rear direction, respectively connecting the transverse connecting block 5 and the lifting arm 3. When the angle adjusting cylinder 6 shortens, it causes the connecting frame 4 to swing upward at the front end of the lifting arm 3. When it extends, it causes the connecting frame 4 to swing downward at the front end of the lifting arm 3. The frame 1 swings synchronously with the connecting frame 4. Thus, the angle adjustment cylinder 6 adjusts the top angle of the roller cutter head 2, allowing the roller cutter head 2 to cut trees or vegetation at the optimal cutting angle. The rear end of the disassembly and assembly component 7 extends from the transverse connecting block 5, and the front end extends out of the connecting frame 4 to dock with the frame. When the rear end of the disassembly and assembly component 7 rotates, its front end will retract into the connecting frame 4 and disengage from the frame 1. At this time, the frame 1 can be moved to clean and maintain the structure and components inside the frame 1. When it is necessary to dock the frame 1 with the disassembly and assembly component 4 again, the frame 1 is moved to the docking position, and then the rear end of the disassembly and assembly component is rotated so that its front end extends out again to dock with the frame 1, thereby improving the convenience and efficiency of disassembly and assembly of the frame 1 and improving the convenience of maintenance of the work head.

[0033] The assembly / disassembly assembly 7 includes an upper movable rod 71 that guides the top of the connecting frame 4, a lower movable rod 72 that guides the bottom of the connecting frame 4 and is aligned with the upper movable rod 71, an upper connecting rod 73 hinged to the lower end of the upper movable rod 71, a lower connecting rod 74 hinged to the upper end of the lower movable rod 72, a crank 75 hinged between the upper connecting rod 73 and the lower connecting rod 74, and a rotating rod 76 fixed at the center of the crank 75. The rear end of the rotating rod 76 extends through the connecting frame 4 from the transverse connecting block 5, and the rear end of the rotating rod 76 is hexagonal in shape that can cooperate with the rotating wrench 77. The upper movable rod 71 and the lower movable rod 72 extend out of the connecting frame 4 to dock with the frame 1 or retract into the connecting frame 4 to disengage from the frame 1 as the rotating rod 76 rotates. As shown in Figure 4, crank 75, upper connecting rod 73, and upper movable rod 71 form a crank-connecting rod assembly. Crank 75, lower connecting rod 74, and lower movable rod 72 also form a crank-connecting rod assembly. Rotating rod 76 drives crank 75 to rotate. Upper connecting rod 73 drives upper movable rod 71 to perform a guiding movement at the top of connecting frame 4, causing the upper end of upper movable rod 71 to extend out of the top of connecting frame 4 or retract into connecting frame 4. Lower connecting rod 74 drives lower movable rod 72 to perform a guiding movement at the bottom of connecting frame 4, causing the lower end of lower movable rod 72 to extend out of connecting frame 4. The bottom or retracts into the connecting frame 4; when the upper end of the upper movable rod 71 extends out of the connecting frame 4 and the lower end of the lower movable rod 72 extends out of the connecting frame 4, the upper end of the upper movable rod and the lower end of the lower movable rod respectively connect with the frame 1 to form a connection between the lifting arm 3 and the frame 1; when the upper end of the upper movable rod 71 retracts into the connecting frame 4 and the lower end of the lower movable rod 72 retracts into the connecting frame 4, the upper and lower movable rods are disengaged from the frame, and the frame 1 can be removed from the lifting arm 3. The rear end of the rotating rod 76 is designed in a hexagonal shape to facilitate its rotation in conjunction with the rotating wrench 77.

[0034] The hydraulic swing assembly 9 includes a swing arm 91 and a hydraulic rod 92. The upper end of the swing arm 91 is hinged to the end of the horizontal push rod 8, and the lower end is hinged to the frame 1. The telescopic end of the hydraulic rod 92 is hinged to the swing arm 91, and the lower end is hinged to the frame 1. The swing arm 91 swings the end of the horizontal push rod 8 as the hydraulic rod 92 extends and retracts. As shown in the attached drawings, the swing arm 91 connects the frame and the end of the horizontal push rod 8, and the hydraulic rod 92 connects the swing arm 91 and the frame 1. The extension and retraction of the hydraulic rod 92 drives the swing arm 91 to swing, which in turn drives the end of the horizontal push rod 8 to swing. When the swing angles of the swing arms 91 at both ends of the horizontal push rod 8 are the same, the horizontal push rod 8 swings forward or backward without changing its lateral posture, bending the trunk before cutting. When the swing angles of the swing arms 91 at both ends of the horizontal push rod 8 are different, the lateral posture of the horizontal push rod 8 is changed. At this time, the two swing arms 91 are not parallel, and an angle is formed between the two swing arms 91. As shown in Figure 7, during the cutting process of the roller cutter head 2, the tree will tilt. During the tilting process, the angle α between the two swing rods 91 is adjusted by the extension and retraction of the two hydraulic rods 92, changing the lateral posture of the horizontal push rod 8 to keep the horizontal push rod 8 pressing against the tree. This resists the reaction force acting on the roller cutter head 2 and the horizontal push rod 8 during the tree trunk tilting process, keeping the roller cutter head 2 in a stable lateral posture. This ensures that the roller cutter head 2 accurately applies force to the tree, reducing positional deviation and ineffective cutting during cutting, improving cutting efficiency, and enhancing the land clearing adaptability of the work head. Moreover, adjusting the lateral posture of the horizontal push rod can also control the angle at which the tree being cut tilts forward, accelerating the tree's tilting, shortening the cutting time, and improving land clearing efficiency.

[0035] The swing arm 91 has multiple hinge holes 93 arranged from top to bottom. The telescopic end of the hydraulic rod 92 is equipped with connecting ears 94 corresponding to the hinge holes 93. The transverse push rod 8 has saw teeth 81 that contact the workpiece. The multiple hinge holes 94 are used to adjust the connection position of the connecting ears 94 on the swing arm 91, thereby adjusting the maximum swing angle of the swing arm 91 and thus the maximum change angle of the transverse push rod 8's lateral posture. The connection position of the connecting ears 94 on the swing arm 91 can be adjusted according to different land clearing needs, further improving land clearing adaptability. The saw teeth on the transverse push rod 8 increase the friction with the tree, preventing the transverse push rod 8 from slipping and ensuring that the transverse push rod 8 is firmly pressed against the tree.

[0036] The frame 1 contains a secondary cutting plate 10 located behind the drum cutter head 2. A chip-laying and discharge chain 11, evenly distributed laterally, is mounted at the rear bottom of the frame 1. Cutting edges 12, convex to one side of the drum cutter head 2, are evenly distributed laterally on the secondary cutting plate 10. During cutting, the drum cutter head 2 first cuts the workpiece. As the drum cutter head 2 rotates at high speed, it throws the chips to the discharge end of the frame, where they collide with the secondary cutting plate 10. The chips are then further cut by the cutting edges 12 on the secondary cutting plate 10, reducing the chip size or length and achieving secondary crushing of the chips. This improves the uniformity of the chips. The chip-laying and discharge chain 11 guides the chips effectively from the rear end of the frame 1, reducing chip accumulation within the frame, lowering the running resistance of the drum cutter head 2, preventing drum jamming, saving energy, and reducing the failure rate of the cutting head.

[0037] The secondary cutting plate 10 is hinged at its upper end to the frame 1 and abuts against the adjusting bolt 13 on the frame 1 at its lower end. The tilt angle of the secondary cutting plate 10 is adjusted by rotating the adjusting bolt 13. By adjusting the tilt angle of the secondary cutting plate 10 through the adjusting bolt 13, the tilt angle of the cutting edge 12 is adjusted, ensuring that the cutting edge 12 can match the trajectory of the debris thrown out when the drum cutter head 2 rotates, thereby improving the cutting rate of the secondary cutting and making the secondary cutting plate act like an adjustable "gate" to control the final output particle size of the debris.

[0038] The drum cutter head 2 includes a drum 21, a cutter holder 22, tooth-breaking cutters 23 mounted on the cutter holder 22, and a hydraulic drive unit 24 that drives the drum 21 to rotate. The drum 21 has annular grooves 25 evenly distributed along the axial direction. The cutter holders 22 are mounted between adjacent annular grooves 25 and are symmetrically distributed along positive and negative spiral lines on the drum 21. The hydraulic drive unit 24 is connected to the shaft of the drum 21. The hydraulic drive unit 24 drives the drum 21 to rotate, causing the tooth-breaking cutters 23 to rotate. The symmetrical distribution of the cutter holders 22 and the tooth-breaking cutters 23 along positive and negative spiral lines on the drum ensure a balanced cutting force on the workpiece during cutting and improve cutting efficiency.

[0039] The hydraulic drive component 25 includes a hydraulic motor 26 mounted on a frame, a drive gear 27 mounted on the output end of the hydraulic motor 26, a driven gear 28 fixed to the shaft of the roller 21, a chain 29 connecting the drive gear 27 and the driven gear 28, and a tensioning wheel 20 for tensioning the chain 29. The axle of the tensioning wheel 20 is connected to the frame 1 via a tensioning bolt 14, and the chain 29 is tensioned as the tensioning bolt 14 is adjusted. The hydraulic motor 26 drives the drive gear 27 to rotate, which in turn drives the driven gear 28 to rotate via the chain 29, causing the roller 21 to rotate. The tensioning wheel 20, by adjusting its position via the tensioning bolt 14, tensions the chain 29, ensuring the chain 29 maintains tension during operation and improving the reliability of the hydraulic drive component 25 in driving the roller 21.

[0040] This invention also protects the tree cutting method of the above-mentioned land clearing machine working head, characterized in that: firstly, the position of the horizontal push rod 8 is adjusted by the hydraulic swing component 9, and the horizontal push rod 8 is pressed against the tree and bent. Then, the roller cutter head 2 is started to cut the tree. When the tree falls, the lateral posture of the horizontal push rod is adjusted by the movement of the hydraulic swing components 9 at both ends of the horizontal push rod 8, and the horizontal push rod 9 is pushed to follow and press the tree trunk, so that the roller cutter head 2 maintains a stable lateral posture and controls the angle at which the tree being cut falls forward.

[0041] The tree-cutting method of the land clearing machine head described above involves the hydraulic swing assembly 9 driving the end of the horizontal push rod 8 to swing back and forth. Before cutting, the hydraulic swing assembly 9 adjusts the position of the horizontal push rod 8, adjusting both the forward extension size and height of the horizontal push rod to ensure it can adapt to the variety of tree trunk thickness and shape, bending the trunk. As the tree gradually falls, the two sets of hydraulic swing assemblies 9 move independently to adjust the lateral posture of the horizontal push rod 8, pushing it to follow and press against the trunk, preventing the horizontal push rod 8 from detaching from the trunk or being supported by it. The pressure of the horizontal push rod 8 on the trunk... The clamping force resists the reaction force acting on the roller cutter head 2 and the cross push rod 8 during the tree trunk falling process, keeping the roller cutter head 2 in a stable lateral posture, ensuring that the roller cutter head 2 accurately applies force to the tree, reducing positional deviation and ineffective cutting during cutting, improving cutting efficiency, enhancing the land clearing adaptability of the work head, reducing the requirements of the work head on the cutting object, and improving its practicality. Moreover, the hydraulic swing components 9 at both ends of the cross push rod 8 can adjust the lateral posture of the cross push rod 8, which can also control the angle at which the tree being cut falls forward, accelerate the tree falling, shorten the cutting time, and improve land clearing efficiency.

[0042] The technical solutions of the embodiments of the present invention have been fully described above with reference to the accompanying drawings. It should be noted that the described embodiments are only a part of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A landscaping machine working head, comprising a frame, a roller cutter head mounted in the frame, and lifting arms connected to the landscaping machine chassis and symmetrically arranged on the left and right sides, characterized in that: It also includes an angle adjustment connection mechanism mounted on the front end of the lifting arm and a lateral stabilizing mechanism mounted on the top of the frame. The angle adjustment connection mechanism includes a connecting frame hinged to the front end of the lifting arm, a lateral connecting block fixed between the two connecting frames, an angle adjustment cylinder hinged between the lateral connecting block and the lifting arm, and a disassembly assembly mounted in the connecting frame that can be quickly connected to or disconnected from the frame. The lateral stabilizing mechanism includes a horizontal push rod horizontally positioned above the frame and a hydraulic swing assembly hinged between the end of the horizontal push rod and the frame that can drive the end of the horizontal push rod to swing back and forth.

2. The land clearing machine working head according to claim 1, characterized in that: The horizontal connecting block is fixed to the rear end of the connecting frame and close to the back of the frame. The front end of the angle adjustment cylinder is hinged to the top of the horizontal connecting block, and the rear end is hinged to the lifting arm. The rear end of the disassembly and assembly component extends out of the horizontal connecting block through the connecting frame, and the front end extends out of the connecting frame and docks with the frame. The front end of the disassembly and assembly component retracts into the connecting frame and disengages from the frame as its rear end rotates.

3. The land clearing machine working head according to claim 2, characterized in that: The assembly / disassembly assembly includes an upper movable rod that guides the top of the connecting frame, a lower movable rod that guides the bottom of the connecting frame and is aligned with the upper movable rod, an upper connecting rod hinged to the lower end of the upper movable rod, a lower connecting rod hinged to the upper end of the lower movable rod, a crank hinged between the upper and lower connecting rods, and a rotating rod fixed at the center of the crank. The rear end of the rotating rod extends through the connecting frame from the transverse connecting block, and the rear end of the rotating rod is hexagonal in shape that can be engaged with a rotating wrench. The upper and lower movable rods extend from the connecting frame to engage with the frame or retract into the connecting frame to disengage from the frame as the rotating rod rotates.

4. The land clearing machine working head according to claim 3, characterized in that: The hydraulic swing assembly includes a swing arm and a hydraulic rod. The upper end of the swing arm is hinged to the end of the horizontal push rod, and the lower end is hinged to the frame. The telescopic end of the hydraulic rod is hinged to the swing arm, and the lower end is hinged to the frame. The swing arm drives the end of the horizontal push rod to swing as the hydraulic rod extends and retracts.

5. The land clearing machine working head according to claim 4, characterized in that: The swing arm has multiple hinge holes from top to bottom, the telescopic end of the hydraulic rod is equipped with connecting lugs corresponding to the hinge holes, and the horizontal push rod has saw teeth that contact the workpiece.

6. The land clearing machine working head according to claim 1, characterized in that: The frame contains a secondary cutting plate located behind the drum cutter head. The bottom rear end of the frame is equipped with a chip-laying chain ring evenly distributed in the transverse direction. The secondary cutting plate has cutting edges evenly distributed in the transverse direction opposite to the drum cutter head, and the cutting edges are arc-shaped protruding towards one side of the drum cutter head.

7. The land clearing machine working head according to claim 6, characterized in that: The upper end of the secondary cutting plate is hinged to the frame, and the lower end abuts against the adjusting bolt on the frame. The tilt angle of the secondary cutting plate is adjusted as the adjusting bolt is rotated.

8. The land clearing machine working head according to claim 1, characterized in that: The drum cutter disc includes a drum, a cutter holder, a toothed cutter mounted on the cutter holder, and a hydraulic drive unit that drives the drum to rotate. The drum has annular grooves evenly distributed along the axial direction. The cutter holders are mounted between adjacent annular grooves and are symmetrically distributed along positive and negative spiral lines on the drum. The hydraulic drive unit is connected to the shaft of the drum via a drive connection.

9. The land clearing machine working head according to claim 8, characterized in that: The hydraulic drive component includes a hydraulic motor mounted on the frame, a drive gear mounted on the output end of the hydraulic motor, a driven gear fixed to the shaft head of the roller, a chain connecting the drive gear and the driven gear, and a tensioning wheel for tensioning the chain. The axle of the tensioning wheel is connected to the frame via a tensioning bolt, and the chain is tensioned as the tensioning bolt is adjusted.

10. The tree-cutting method of the land clearing machine head according to any one of claims 1 to 9, characterized in that: First, use the hydraulic swing assembly to adjust the position of the horizontal push rod, press the horizontal push rod against the tree to bend it, and then start the drum cutter head to cut the tree. When the tree falls, the movement of the hydraulic swing assembly at both ends of the horizontal push rod adjusts the lateral posture of the horizontal push rod, pushes the horizontal push rod to follow and press the tree trunk, keeps the drum cutter head in a stable lateral posture, and controls the angle at which the tree being cut falls forward.

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