Orchard weeding machine

Abstract

The present invention relates to an orchard weeder, and belongs to the technical field of orchard weeder structures. The present invention comprises a frame mechanism installed on a walking mechanism, the frame mechanism is hinged with a swivel support arm bracket and a fixed support arm bracket, the swivel support arm bracket is located on the outside and a swivel blade mechanism is installed at the end, the fixed support arm bracket is located on the inside and a fixed blade mechanism is installed at the end, and a power mechanism for driving the swivel blade mechanism and the fixed blade mechanism to work is installed on the frame mechanism, and the power mechanism can also drive the frame mechanism to fold or open. The present invention has ingenious structural design, high weeding efficiency, high safety factor, good weeding effect, and long service life.

Description

Technical Field

[0001] The invention relates to an orchard weeder and belongs to the technical field of orchard weeder structures. Background Art

[0002] At present, apple planting management is developing towards modernization, mechanized management is imperative, and efficient and applicable orchard management machinery and equipment have become a trend. However, the existing weeding machine structure design that can be applied to modern orchards is not reasonable enough, and there are mainly the following deficiencies:

[0003] 1. It can only remove the grass in the wide passages in the middle of the fruit tree rows, but cannot remove the grass around the fruit trees and under the narrow and low branches between the plants, especially near the trees, which are generally not flat, so weeding is more difficult;

[0004] 2. During use, the rapidly rotating blades can easily hit the tree trunks and damage the fruit trees;

[0005] 3. During weeding, the blade is prone to hitting stones, resulting in a short service life;

[0006] 4. At present, weeding around trees is basically done by using small weeders carried on the back of people. Fruit farmers weed manually, which has low weeding efficiency and is very likely to hurt people and trees.

[0007] 5. Traditional motorized weeders rely solely on the follower wheel to adjust the height of the blade from the ground, which cannot eliminate the defects of the blade hitting the soil and rocks, breaking the blade and injuring people, and flying stones damaging the fruit after the blade cuts the ground. There is a lack of motorized weeders that can automatically change the blade angle according to the shape of the ridge (surface) and have an effective height-limiting device.

[0008] Therefore, a kind of orchard weeding machine that can overcome the problems mentioned above is urgently needed to occur. Summary of the invention

[0009] The purpose of the present invention is to solve the deficiencies of the above-mentioned prior art and to provide an orchard weeder with ingenious structural design, high weeding efficiency, high safety factor, good weeding effect and long service life.

[0010] An orchard weeder, which is special in that it includes a frame mechanism installed on a walking mechanism, the frame mechanism is hinged with a swivel support arm bracket 10 and a fixed support arm bracket 9, the swivel support arm bracket 10 is located on the outside and a swivel blade mechanism is installed at the end, the fixed support arm bracket 9 is located on the inside and a fixed blade mechanism is installed at the end, and a power mechanism for driving the swivel blade mechanism and the fixed blade mechanism to work is installed on the frame mechanism, and the power mechanism can also drive the frame mechanism to close or open;

[0011] Preferably, the traveling mechanism is an agricultural tricycle or a tractor;

[0012] Preferably, the frame mechanism includes a main frame 1 and a movable frame 2 hinged to the main frame 1 at one end, the movable frame 2 is controlled by a hydraulic cylinder 46, the movable frame 2 is respectively connected to a fixed support arm bracket 9 in the middle through two cutter head lateral angle adjustment mechanisms, and is connected to a swivel support arm bracket 10 at the end, and a plurality of suspension brackets 3 for mounting the main frame 1 on the walking mechanism are installed on the main frame 1;

[0013] Preferably, the cutter head lateral angle adjustment mechanism comprises a flange connection seat 26 mounted on the movable frame 2, a rotating flange 55, a fixing screw 57, and an adjusting top screw 58;

[0014] Preferably, a suspension pin 4 is installed on the suspension bracket 3, the main frame 1 and the movable frame 2 are hinged through the main frame hinge 5 and the hinge pin 6, and the movable frame 2 and the slewing support arm bracket 10 are hinged through the movable frame hinge 7 and the hinge pin 8;

[0015] Preferably, the rotary cutter disc mechanism and the fixed cutter disc mechanism both include a vertical shaft 15, a bearing 16 is installed on the outside of the vertical shaft 15, a cutter disc flange 17 is installed through the bearing 16, a passive gear 21 is installed on the upper part of the cutter disc flange 17, the passive gear 21 is meshed with a driving gear 22, the driving gear 22 is driven by a hydraulic motor 42, a circle of spaced blades 19 is installed along the outer circumference of the cutter disc 18, a tray 36 is installed at the bottom of the vertical shaft 15 through a tray flange 38, and a tray anti-wear layer 37 is installed on the lower surface of the tray 36;

[0016] Preferably, the blade 19 is trapezoidal, and a plurality of concave arc structures are provided at intervals on both sides along the length direction of the blade 19, and the blade is located on the concave arc structures;

[0017] Preferably, the rotary cutter disc mechanism further comprises a rotatable casing 26 which is covered above the cutter disc 18, a casing connection flange 25 is installed on the top of the rotatable casing 26, a rotatable annular rotating guard ring 27 is installed on the outer circumference of the rotatable mechanism 26, a circle of anti-collision strips 28 is installed on the outer circumference of the rotating guard ring 27, and a plurality of positioning wheels 29 are installed between the rotatable casing 26 and the rotating guard ring 27;

[0018] Preferably, the fixed cutter disc mechanism further comprises a housing 24 which is arranged directly above the cutter disc 18;

[0019] Preferably, the outer cover of the passive gear 21 is provided with a gear cover 23, the blade 19 is mounted on the cutter head 18 through a special screw 20, and the positioning wheel 29 is mounted on the rotatable housing 26 through a positioning wheel bracket 30;

[0020] Preferably, the swivel support arm bracket 10 includes an upper support arm 31 and a lower support arm 32, a support arm bracket 33 is installed between the upper support arm 31 and the lower support arm 32 via a support arm pin 34, and a support arm bracket seat 35 is installed on the support arm bracket 33;

[0021] Preferably, the power system includes a hydraulic oil pump 40 installed on the main frame 1, the hydraulic oil pump 40 is connected to two hydraulic control valves 41 through two high-pressure oil pipes 43, the two hydraulic control valves 41 are connected to the electric control switch 44, one hydraulic control valve 41 is used to control the hydraulic motor 42, and the other hydraulic control valve 41 is used to control the hydraulic cylinder 46, the fixed end of the hydraulic cylinder 46 is installed on the main frame 1 through the cylinder rear support 48 and the cylinder pin 49, and the movable end is installed on the movable frame 2 through the cylinder front support 47 and the cylinder pin 49;

[0022] Preferably, a height adjustment mechanism is installed above the swivel support arm bracket 10, and the height adjustment mechanism includes a swivel cutter disc cantilever arm 12 and a fixed cutter disc cantilever arm 11. The swivel cutter disc cantilever arm 12 is installed at the end of the movable frame 2 and is located above the swivel support arm bracket 10. One end of the fixed cutter disc cantilever arm 11 is installed on the movable frame 2 and the other end is located above the fixed support arm bracket 9. One end of the swivel cutter disc cantilever arm 12 and the fixed cutter disc cantilever arm 11 are both installed with a cantilever arm tension spring 14. 14 are respectively fixed at the bottom on the casing connecting flange 25, a swivel arm tension spring 13 is installed on the movable frame 2, one end of the swivel tension spring 13 is fixed to the end of the swivel bracket rocker arm 50, and the other end is fixed to the movable frame 2, the root of the swivel bracket rocker arm 50 is fixed to the swivel support arm bracket 10, and one end of the fixed cutter disc cantilever arm 11 and the swivel cutter disc cantilever arm 12 are respectively installed with a caster connecting arm 54, and one end of the caster connecting arm 54 is installed with an auxiliary caster 51 through a rotating bracket 52 and a height adjustment screw 53.

[0023] The orchard weeder of the present invention has an ingenious structural design. When in use, the weeder is installed on the traveling mechanism suspension device, the hydraulic oil pump is connected to the traveling mechanism power output, and the traveling mechanism moves while driving the weeder to move and the cutter disc to rotate. The frame mechanism is opened during weeding and can be positioned according to the row spacing width of the fruit trees, and can adapt to any row spacing width between 1.6 meters and 4.5 meters. The rotary blade mechanism is used to weed by fixing the blade mechanism. The rotary blade mechanism can be extended under the fruit tree to weed the tree trunk at will without damaging the tree trunk. The diameter of the rotatable housing located above the blade is larger than the diameter of the blade and the blade. When encountering a tree trunk during weeding, the rotatable housing with a rubber anti-collision strip will first contact the tree trunk, while the blade and the blade with a diameter smaller than the housing will not touch the tree trunk. As the trunk moves, the reaction force of the tree trunk will automatically push the swivel support arm bracket that can swing horizontally together with the blade. The rotatable housing moves along the tree trunk while rotating naturally, and then the swivel arm tension spring controls the force of the tree trunk so that the tree trunk cannot be damaged and the blade slides (dodges) past the tree trunk, and then the swivel arm is pulled back in time, so the purpose of removing grass near the tree trunk without damaging the tree can be achieved. Through the parallel support of the upper and lower support arms, the blade can float up and down freely and remain vertical when sliding along uneven terrain. The terrain around both sides of the orchard near the tree row is generally uneven, especially the plots for ridge planting are of different shapes. The tray-type structure of the present invention can effectively cope with various complex terrains. The disc-shaped tray with a wear-resistant protective layer located below the cutter disc naturally forms a cutter disc at a pre-set height after the bottom touches the ground. When weeding, the tray naturally falls to the ground and moves along the terrain (skin). No matter how complex the terrain is, it will slide along the ground by itself, thereby achieving the weeding stubble height required by the orchard and naturally maintaining consistency, avoiding the common orchard weeding problems such as the blade cutting the ground and chopping soil and rocks, causing injuries to people, fruits, blades, and tree roots. The fixed cutter disc mechanism can cooperate with the rotary cutter disc mechanism to complete the remaining part of the grass width that exceeds the effective cutting width of the rotary cutter disc, which is also the slope part of the ridge. The lateral angle of the cutter disc is adjusted to match the ridge slope angle by rotating the flange. In addition to not requiring the lateral swing function, the remaining part of the grass is removed synchronously with the same function as the rotary cutter disc. The blade is trapezoidal, with multiple concave arc structures spaced apart on both sides along the length of the blade. The blade is located on the concave arc structure. This structure of the blade can not only mow the grass well, but also protect the blade, prevent the blade from colliding with stones and causing damage to the blade, and increase the service life of the blade. Keeping the blade sharp can reduce power consumption, improve efficiency and reduce energy consumption. The fixed blade and the rotary blade cantilever arm located above the blade disc are suspended by a tension spring with appropriate elasticity, balancing the weight of the blade disc so that it can slide lightly along the surface of the ground, effectively avoiding the difficulty of the rotary blade disc to avoid and the wear of the tray due to the weight of the blade disc, and can reduce the phenomenon of the blade eating the ground.The auxiliary caster located behind the cutter disc works together with the tractor's rear suspension to lift the frame mechanism and keep it parallel to the ground. When in use, the distance between the cutter disc and the ground is adjusted by the height adjustment screw to assist in bearing the weight of the rear end of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 : A structural schematic diagram of an orchard weeder of the present invention;

[0025] Figure 2 : Figure 1 A partial enlarged view of

[0026] Figure 3 : Figure 1 A top view of

[0027] Figure 4 : Frame mechanism folded state diagram;

[0028] Figure 5 : Schematic diagram of the structure of the cutter disc and blade;

[0029] Figure 6 : Schematic diagram of blade structure;

[0030] Figure 7 : Schematic diagram of the structure in which the pallet, pallet anti-wear layer, pallet flange and vertical shaft cooperate.

[0031] In the figure: 1. Main frame; 2. Movable frame; 3. Suspension bracket; 4. Suspension pin; 5. Main frame hinge; 6. Hinge pin; 7. Movable frame hinge; 8. Hinge pin; 9. Fixed support arm bracket; 10. Rotary support arm bracket; 11. Fixed cutter head cantilever arm; 12. Rotary cutter head cantilever arm; 13. Rotary arm tension spring; 14. Cantilever arm tension spring; 15. Vertical axis; 16. Bearing; 17. Cutter flange; 18. Cutter; 19. Blade; 20. Special screw; 21. Passive gear; 22. Active gear; 23. Gear cover; 24. Casing; 25. Casing connection flange; 26. Rotatable casing; 27. Rotating guard ring; 28. Anti-collision strip; 29. ​​Positioning wheel; 30. Positioning wheel bracket; 31. Upper support arm; 32. Lower support arm; 33. Support arm bracket; 34. Support arm pin; 35. Support arm bracket seat; 36. Pallet; 37. Pallet anti-wear layer; 38. Pallet flange; 40. Hydraulic oil pump; 41. Hydraulic control valve; 42. Hydraulic motor; 43. High-pressure oil pipe; 44. Electric control switch; 46. Hydraulic cylinder; 47. Front support of cylinder; 48. Rear support of cylinder; 49. Cylinder pin; 50. Swivel support rocker arm; 51. Auxiliary caster; 52. Rotating bracket; 53. Height adjustment screw; 54. Caster connecting arm; 55. Rotating flange; 56. Flange connecting seat; 57. Fixing screw; 58. Adjusting top screw. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-7 The present invention provides an orchard weeder, comprising a frame mechanism installed on a walking mechanism, the frame mechanism is hinged with a swivel support arm bracket 10 and a fixed support arm bracket 9, the swivel support arm bracket 10 is located on the outside and a swivel blade mechanism is installed at the end, the fixed support arm bracket 9 is located on the inside and a fixed blade mechanism is installed at the end, and a power mechanism for driving the swivel blade mechanism and the fixed blade mechanism to work is installed on the frame mechanism, and the power mechanism can also drive the frame mechanism to close or open;

[0034] The traveling mechanism is an agricultural tricycle or tractor. First, the original resources of fruit farmers are utilized to reduce investment. Second, it conforms to the driving habits of fruit farmers, and no professional driver is required, so they do not have to worry about not being able to operate. Third, it solves the trouble that manufacturers are not easy to mass produce due to small demand, and the arbitrary output is also an excellent way to reduce the cost of special equipment. Fourth, on the one hand, it reduces the production cost, and on the other hand, it also reduces the operating cost, reduces energy consumption by 30% compared with similar products, and solves the defect of poor performance of traditional similar transfer (transfer over a long distance). Similar products are basically the fastest at 8km / h, while the present invention can travel at the conventional speed of 45km / h for tricycles.

[0035] The frame mechanism includes a main frame 1 and a movable frame 2 hinged to the main frame 1 at one end, the movable frame 2 is controlled by a hydraulic cylinder 46, the movable frame 2 is respectively connected to a fixed support arm bracket 9 in the middle through two cutter head lateral angle adjustment mechanisms, and is connected to a swivel support arm bracket 10 at the end, and a plurality of suspension brackets 3 for mounting the main frame 1 on the walking mechanism are installed on the main frame 1;

[0036] In order to adjust the angle of the cutter disc, the cutter disc lateral angle adjustment mechanism includes a flange connection seat 26 mounted on the movable frame 2, a rotating flange 55, a fixing screw 57, and an adjusting top screw 58.

[0037] A suspension pin 4 is installed on the suspension bracket 3, the main frame 1 and the movable frame 2 are hinged through the main frame hinge 5 and the hinge pin 6, and the movable frame 2 and the slewing support arm bracket 10 are hinged through the movable frame hinge 7 and the hinge pin 8;

[0038] In order to achieve a better weeding effect, the rotary cutter disc mechanism and the fixed cutter disc mechanism both include a vertical shaft 15, a bearing 16 is installed on the outside of the vertical shaft 15, a cutter disc flange 17 is installed through the bearing 16, a passive gear 21 is installed on the upper part of the cutter disc flange 17, the passive gear 21 is meshed with the active gear 22, the active gear 22 is driven by a hydraulic motor 42, a circle of spaced blades 19 is installed along the outer circumference of the cutter disc 18, a tray 36 is installed at the bottom of the vertical shaft 15 through a tray flange 38, and a tray anti-wear layer 37 is installed on the lower surface of the tray 36;

[0039] In order to better collect weeds, improve weeding efficiency, and further increase the service life of the blade, the blade 19 is trapezoidal, and a plurality of concave arc structures spaced apart are provided on both sides along the length direction of the blade 19, and the blade is located on the concave arc structure;

[0040] In order to protect people and animals around and prevent the knife disc from cutting tree trunks, the rotary knife disc mechanism also includes a rotatable housing 26 that is covered directly above the knife disc 18. A housing connecting flange 25 is installed on the top of the rotatable housing 26. A rotatable annular rotating guard ring 27 is installed on the outer circumference of the rotatable mechanism 26. A circle of anti-collision strips 28 is installed on the outer circumference of the rotating guard ring 27. A plurality of positioning wheels 29 are installed between the rotatable housing 26 and the rotating guard ring 27.

[0041] The fixed cutter disc mechanism also includes a housing 24 that is disposed directly above the cutter disc 18;

[0042] The outer cover of the passive gear 21 is provided with a gear cover 23, the blade 19 is mounted on the cutter head 18 through a special screw 20, and the positioning wheel 29 is mounted on the rotatable housing 26 through a positioning wheel bracket 30;

[0043] In order to achieve better stability, the swivel support arm bracket 10 includes an upper support arm 31 and a lower support arm 32, a support arm bracket 33 is installed between the upper support arm 31 and the lower support arm 32 through a support arm pin 34, and a support arm bracket seat 35 is installed on the support arm bracket 33;

[0044] In order to provide power better, the power system includes a hydraulic oil pump 40 installed on the main frame 1, and the hydraulic oil pump 40 is connected to two hydraulic control valves 41 through two high-pressure oil pipes 43 respectively. The two hydraulic control valves 41 are connected to an electric control switch 44, one of the hydraulic control valves 41 is used to control a hydraulic motor 42, and the other hydraulic control valve 41 is used to control a hydraulic cylinder 46. The fixed end of the hydraulic cylinder 46 is installed on the main frame 1 through a cylinder rear support 48 and a cylinder pin 49, and the movable end is installed on the movable frame 2 through a cylinder front support 47 and a cylinder pin 49;

[0045] A height adjustment mechanism is installed above the slewing support arm bracket 10, and the height adjustment mechanism includes a slewing cutter disc cantilever arm 12 and a fixed cutter disc cantilever arm 11. The slewing cutter disc cantilever arm 12 is installed at the end of the movable frame 2 and is located above the slewing support arm bracket 10. One end of the fixed cutter disc cantilever arm 11 is installed on the movable frame 2 and the other end is located above the fixed support arm bracket 9. The slewing cutter disc cantilever arm 12 and the fixed cutter disc cantilever arm 11 are both installed with a cantilever arm tension spring 14 at one end. The parts are respectively fixed on the casing connecting flange 25, a swivel arm tension spring 13 is installed on the movable frame 2, one end of the swivel tension spring 13 is fixed to the end of the swivel bracket rocker arm 50, and the other end is fixed to the movable frame 2, the root of the swivel bracket rocker arm 50 is fixed to the swivel support arm bracket 10, and one end of the fixed cutter disc cantilever arm 11 and the swivel cutter disc cantilever arm 12 are respectively installed with caster connecting arms 54, and one end of the caster connecting arm 54 is installed with an auxiliary caster 51 through a rotating bracket 52 and a height adjustment screw 53.

[0046] When in use, the weeder is installed on the suspension device of the walking mechanism, and the hydraulic oil pump 40 is connected to the power output of the walking mechanism. When the walking mechanism moves, the weeder is driven to move and the cutter disc is driven to rotate. The frame mechanism is opened during weeding and can be positioned according to the row width of the fruit trees, which can adapt to any row width between 1.6 meters and 4.5 meters. The weeding is carried out by fixing the cutter disc mechanism and rotating the cutter disc mechanism. The rotating cutter disc mechanism can be extended under the fruit tree to weed the tree trunk at will without damaging the tree trunk. The diameter of the rotatable housing located above the cutter disc is larger than the cutter disc and the cutter disc. When encountering a tree trunk during weeding, the rotatable housing with a rubber anti-collision strip will first contact the trunk, while the blade and cutter head with a diameter smaller than the housing will not touch the trunk. As the trunk moves, the reaction force of the trunk will automatically push the swivel support arm bracket and the cutter head together. The rotatable housing will move along the trunk while rotating naturally, and the swivel arm tension spring will control the force of the trunk so that the trunk cannot be damaged. After the cutter head slides (dodges) over the trunk, the swivel arm will be pulled back in time, so the purpose of removing grass near the trunk without damaging the tree can be achieved. The parallel support of the upper and lower support arms allows the cutter head to float up and down freely and remain vertical when sliding along uneven terrain. The terrain around both sides of the orchard near the tree row is generally uneven, especially the plots for ridge planting are of different shapes. The tray-type structure of the present invention can effectively cope with various complex terrains. The disc-shaped tray with a wear-resistant protective layer located below the cutter disc naturally forms a cutter disc at a pre-set height after the bottom touches the ground. When weeding, the tray naturally falls to the ground and moves along the terrain (skin). No matter how complex the terrain is, it will slide along the ground by itself, thereby achieving the weeding stubble height required by the orchard and naturally maintaining consistency, avoiding the common orchard weeding problems such as the blade cutting the ground and chopping soil and rocks, causing injuries to people, fruits, blades, and tree roots. The fixed cutter disc mechanism can cooperate with the rotary cutter disc mechanism to complete the remaining part of the grass width that exceeds the effective cutting width of the rotary cutter disc, which is also the slope part of the ridge. The lateral angle of the cutter disc is adjusted to match the ridge slope angle by rotating the flange. In addition to not requiring the lateral swing function, the remaining part of the grass is removed synchronously with the same function as the rotary cutter disc. The blade is trapezoidal, with multiple concave arc structures spaced apart on both sides along the length of the blade. The blade is located on the concave arc structure. This structure of the blade can not only mow the grass well, but also protect the blade, prevent the blade from colliding with stones and causing damage to the blade, and increase the service life of the blade. Keeping the blade sharp can reduce power consumption, improve efficiency and reduce energy consumption. The fixed blade and the rotary blade cantilever arm located above the blade disc are suspended by a tension spring with appropriate elasticity, balancing the weight of the blade disc so that it can slide lightly along the surface of the ground, effectively avoiding the difficulty of the rotary blade disc to avoid and the wear of the tray due to the weight of the blade disc, and can reduce the phenomenon of the blade eating the ground.The auxiliary caster located behind the cutter disc works together with the tractor's rear suspension to lift the frame mechanism and keep it parallel to the ground. When in use, the distance between the cutter disc and the ground is adjusted by the height adjustment screw to assist in bearing the weight of the rear end of the equipment.

[0047] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An orchard weeder, characterized in that The invention comprises a frame mechanism installed on the walking mechanism, the frame mechanism is hinged with a swivel support arm bracket (10) and a fixed support arm bracket (9), the swivel support arm bracket (10) is located on the outside and a swivel cutter disc mechanism is installed at the end, the fixed support arm bracket (9) is located on the inside and a fixed cutter disc mechanism is installed at the end, and a power mechanism for driving the swivel cutter disc mechanism and the fixed cutter disc mechanism to work is installed on the frame mechanism, and the power mechanism can also drive the frame mechanism to retract or expand; The frame mechanism comprises a main frame (1) and a movable frame (2) hinged to the main frame (1) at one end, the movable frame (2) being controlled by a hydraulic cylinder (46), the movable frame (2) being respectively connected to a slewing support arm bracket (10) and a fixed support arm bracket (9) via two cutter head lateral angle adjustment mechanisms, and a plurality of suspension brackets (3) for mounting the main frame (1) on a walking mechanism are mounted on the main frame (1); The rotary cutter disc mechanism and the fixed cutter disc mechanism both comprise a vertical shaft (15), a bearing (16) being mounted on the outside of the vertical shaft (15), a cutter disc flange (17) being mounted via the bearing (16), a passive gear (21) being mounted on the upper part of the cutter disc flange (17), the passive gear (21) being meshed with a driving gear (22), the driving gear (22) being driven by a hydraulic motor (42), a circle of spaced blades (19) being mounted along the outer circumference of the cutter disc (18), a tray (36) being mounted on the bottom of the vertical shaft (15) via a tray flange (38), and a tray anti-wear layer (37) being mounted on the lower surface of the tray (36); The blade (19) is trapezoidal in shape, and is provided with a plurality of spaced concave arc structures on both sides along the length direction of the blade (19), and the blade edge is located on the concave arc structures; The rotary cutter disc mechanism further comprises a rotatable casing (26) which is arranged to cover the cutter disc (18); a casing connecting flange (25) is installed on the top of the rotatable casing (26); a rotatable annular rotating guard ring (27) is installed on the outer circumference of the rotatable casing (26); a circle of anti-collision strips (28) is installed on the outer circumference of the rotating guard ring (27); and a plurality of positioning wheels (29) are installed between the rotatable casing (26) and the rotating guard ring (27); The driven gear (21) is externally covered with a gear cover (23), the blade (19) is mounted on the cutter disc (18) via a special screw (20), and the positioning wheel (29) is mounted on the rotatable housing (26) via a positioning wheel bracket (30); The cutter head lateral angle adjustment mechanism comprises a flange connection seat (56), a rotating flange (55), a fixing screw (57), and an adjusting top screw (58) respectively mounted on the middle and end of the movable frame (2); The swivel support arm bracket (10) comprises an upper support arm (31) and a lower support arm (32); a support arm bracket (33) is installed between the upper support arm (31) and the lower support arm (32) via a support arm pin (34); and a support arm bracket seat (35) is installed on the support arm bracket (33); The power system comprises a hydraulic oil pump (40) mounted on the main frame (1), the hydraulic oil pump (40) being connected to two hydraulic control valves (41) respectively through two high-pressure oil pipes (43), the two hydraulic control valves (41) being connected to an electric control switch (44), one of the hydraulic control valves (41) being used to control a hydraulic motor (42), and the other hydraulic control valve (41) being used to control a hydraulic cylinder (46), the fixed end of the hydraulic cylinder (46) being mounted on the main frame (1) through a cylinder rear support (48) and a cylinder pin shaft (49), and the movable end being mounted on the movable frame (2) through a cylinder front support (47) and a cylinder pin shaft (49); A height adjustment mechanism is installed above the slewing support arm bracket (10), and the height adjustment mechanism comprises a slewing cutter disc cantilever arm (12) and a fixed cutter disc cantilever arm (11). The slewing cutter disc cantilever arm (12) is installed at the end of the movable frame (2) and is located above the slewing support arm bracket (10). One end of the fixed cutter disc cantilever arm (11) is installed in the middle of the movable frame (2) and is located above the fixed support arm bracket (9). One end of the slewing cutter disc cantilever arm (12) and the fixed cutter disc cantilever arm (11) are both installed with a cantilever arm tension spring (14). The bottom of the cantilever arm tension spring (14) is respectively The movable frame (2) is fixed to the casing connection flange (25). A swivel arm tension spring (13) is installed on the movable frame (2). One end of the swivel arm tension spring (13) is fixed to the end of the swivel bracket rocker arm (50), and the other end is fixed to the movable frame (2). The root of the swivel bracket rocker arm (50) is fixed to the swivel support arm bracket (10). One end of the fixed cutter disc cantilever arm (11) and the swivel cutter disc cantilever arm (12) are respectively installed with a caster connecting arm (54). One end of the caster connecting arm (54) is installed with an auxiliary caster (51) through a rotating bracket (52) and a height adjustment screw (53).

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