A weeding device based on forestry maintenance

Abstract

The application discloses a kind of weeding device based on forestry maintenance, it is related to weeding equipment technical field, including main crushing chamber, power device and grass pressing mechanism, grass pulling mechanism and crushing mechanism sequentially arranged in main crushing chamber inside along the direction of device advancement, grass pressing mechanism is pressed down to erect weed, grass pulling mechanism is pulled up to the weed after being pressed down together with grass root by grass hooking inclined plate, rigid grass removing guide piece makes pulled up weed separate from grass hooking inclined plate and enter crushing mechanism, crushing mechanism is crushed to weed and grass root by coaxial counter-rotating first crushing disc and second crushing arm, not pulled up weed is removed by cutting knife, and the material after crushing is discharged through discharge port, so as to reduce weed regeneration caused by grass root residue and improve continuous weeding processing capacity.

Description

Technical Field

[0001] This invention relates to the field of weeding equipment technology, and in particular to a weeding device based on forestry maintenance. Background Technology

[0002] Woodlands, nurseries, protective forest belts, and forest maintenance passages are usually covered with a large number of weeds. Weeds compete with seedlings for water, nutrients, and growing space. Therefore, weeding equipment is needed to clean up weeds regularly. Existing push-type mowers usually use a power unit to drive rotating blades to cut grass stems above the ground. Their load-bearing structure is compact and easy to move in relatively narrow areas of the forest.

[0003] Existing push-type lawn mowers mainly cut grass stems, leaving the roots of weeds in the soil. These roots are prone to regrowth after the operation. Increasing the number of cuts directly would increase maintenance frequency and energy consumption. In addition, the cut weeds are easily scattered and spread throughout the work area, making it difficult to complete the weeding, transporting, and shredding in a single pass.

[0004] When weeding, the stems, leaves, and roots of the weeds easily become entangled in the weeding mechanism. If they cannot be detached and guided in time, the mechanism will become clogged due to the continuous accumulation of weeds. Furthermore, the pulled weeds are fluffy and contain roots, making them difficult to properly pulverize when directly applied to the working area of ​​ordinary lawnmowers. Therefore, it is necessary to invent a weeding device based on forestry maintenance to solve these problems. Summary of the Invention

[0005] The purpose of this invention is to provide a weeding device based on forestry maintenance to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a weeding device based on forestry maintenance, comprising a main crushing chamber and a power unit, wherein the power unit is fixedly installed above the main crushing chamber; the interior of the main crushing chamber is sequentially arranged with a weed pressing mechanism, a weed pulling mechanism, and a crushing mechanism along the forward direction; the weed pressing mechanism includes a weed pressing support cover and a weed pressing roller; the rear end of the weed pressing support cover is hinged to the front end of the interior of the main crushing chamber; the weed pressing roller is rotatably installed at the front end of the weed pressing support cover; the weed pulling mechanism includes two rotating support discs rotatably installed on the inner walls of both sides of the main crushing chamber, a plurality of weed hooking inclined plates circumferentially spaced between the two rotating support discs, and a rigid... A rigid weeding guide is fixed inside the main crushing chamber and located between the weeding mechanism and the crushing mechanism. The crushing mechanism includes a first crushing disc, a second crushing arm, and a coaxial commutator. The first crushing disc is located inside the rear side of the main crushing chamber, and the second crushing arm is located above the first crushing disc. The rotation trajectories of the first crushing teeth on the first crushing disc and the second crushing teeth at the end of the second crushing arm overlap. The coaxial commutator is fixed inside the main crushing chamber and located above the first crushing disc, and is connected to the power unit, the first crushing disc, and the second crushing arm for transmission. The first crushing disc and the second crushing arm rotate coaxially in opposite directions.

[0007] Preferably, a rear baffle is fixedly installed on the rear side of the main crushing chamber, and two front baffles are fixedly installed on the front side of the main crushing chamber. The two front baffles are located at both ends of the weeding mechanism facing the crushing mechanism. The rear baffle, the two front baffles, and the side wall of the main crushing chamber together define the crushing space. A grass guiding channel is formed between the two front baffles, extending from the weeding mechanism toward the first crushing disc and communicating with the crushing space. The side wall of the main crushing chamber is provided with a discharge port communicating with the crushing space.

[0008] Preferably, the rigid weed-removing guide includes an arc-shaped support rod, a detachment part, and a guide part. The arc-shaped support rod is fixed inside the main crushing chamber and located between the two front baffles. The detachment part is connected to the end of the arc-shaped support rod near the weed-hooking inclined plate and adjacent to the rotation path of the weed-hooking inclined plate. The guide part is connected to the end of the detachment part away from the weed-hooking inclined plate and extends upward toward the first crushing disc.

[0009] Preferably, the grass-hooking inclined plate includes a grass-inserting part and a hook-holding part. The grass-inserting part is obliquely fixed between the two rotating support disks and extends along the width direction of the main crushing chamber. The hook-holding part is fixed at the end of the grass-inserting part away from the axis of the rotating support disk and is perpendicular to the grass-inserting part. The grass-inserting part and the hook-holding part together form a U-shaped cross section.

[0010] Preferably, multiple sets of the first crushing teeth are fixedly fixed to the upper surface of the first crushing disk at intervals along the circumference of the first crushing disk. Each set of the first crushing teeth includes multiple continuously bent tooth plates arranged in parallel along the radial direction of the first crushing disk. The second crushing teeth include multiple plate-shaped tooth plates that are spaced apart along the width direction of the end of the second crushing arm and extend downward. The first crushing teeth and the second crushing teeth are staggered along the height direction and pass through each other when rotating in opposite directions. A crushing gap is left between the first crushing teeth and the second crushing teeth.

[0011] Preferably, the crushing mechanism further includes a shaft and a bushing. The shaft extends vertically through the bushing and rotates coaxially with the bushing. The first crushing disc is fixed to the lower end of the shaft, and the second crushing arm is fixed to the lower end of the bushing. The coaxial commutator includes an input bevel gear, a reversing bevel gear, and a reverse output bevel gear. The input bevel gear is located on the upper inner side of the coaxial commutator and is directly fixed to the output end of the power device. The upper end of the shaft is fixed to the center of the input bevel gear. The reversing bevel gear is rotatably mounted on the middle inner side of the coaxial commutator and meshes with the input bevel gear and the reverse output bevel gear, respectively. The reverse output bevel gear is located on the lower inner side of the coaxial commutator and is fixedly sleeved on the upper end of the bushing.

[0012] Preferably, a cutting blade is fixedly provided at the lower end of the shaft. The cutting blade is located below the first pulverizing disc and adjacent to the bottom opening of the main pulverizing chamber. Both ends of the cutting blade extend radially along the main pulverizing chamber to the mowing area behind the weeding mechanism.

[0013] Preferably, the weeding device further includes four wheels, which are respectively disposed on the front and rear sides of the main crushing chamber. Each wheel is provided with an adjusting plate, a height adjusting handle, a positioning tooth, and a positioning pin. The adjusting plate is fixed to the outer wall of the main crushing chamber. The height adjusting handle is L-shaped and its bend is hinged to the outer side of the adjusting plate. The wheel is rotatably connected to the downward-extending end of the height adjusting handle. The positioning teeth are spaced apart along the edge of the adjusting plate toward the height adjusting handle. The positioning pin is disposed on the side of the height adjusting handle near the positioning teeth and engages with one of the positioning teeth.

[0014] Preferably, the two wheels located on both sides of the rear of the main crushing chamber are power wheels, and the two power wheels are respectively located on both sides of the main crushing chamber and are connected to a power device located above the main crushing chamber.

[0015] Preferably, a transmission box is fixedly installed above the front of the main crushing chamber. The transmission box is located at one end of the weeding mechanism along the width direction of the main crushing chamber. The input end of the transmission box is arranged towards the power device and is connected to the power device in a transmission manner. The output end of the transmission box is arranged towards the adjacent rotating support plate and is connected to the rotating support plate in a transmission manner.

[0016] The technical effects and advantages of this invention are as follows: 1. This invention, by sequentially arranging a pressing mechanism, a pulling mechanism, and a crushing mechanism inside the main crushing chamber along the forward direction, allows upright weeds to be pressed to the ground by the pressing roller during the device's movement. Then, a hooking plate that rotates with the rotating support plate inserts into the pressed weeds and pulls them upward through the hook, causing the stems and roots to detach from the soil. The pulled-out weeds are then removed from the hooking plate by a rigid weed removal guide and enter the area above the first crushing disc. Subsequently, they are crushed by the first crushing disc and the second crushing arm that rotate in opposite directions on the same axis, thus forming a continuous processing path of pressing, pulling, detaching, guiding, and crushing, reducing weed regeneration caused by residual roots. 2. The present invention forms a grass guiding channel through two front baffles and sets a rigid grass removal guide between the two front baffles. When the grass carried by the grass hook plate rotates to the separation part, it is blocked by the separation part and separated from the grass hook plate. The separated grass enters the area above the first crushing disc along the guide part. The rear baffle, the two front baffles and the side wall of the main crushing chamber together restrict the movement range of the grass and the crushed material, thereby reducing the possibility of grass getting tangled, falling back and scattering between the grass pulling mechanism and the crushing mechanism, and improving the stability of the continuous grass feeding and crushing process. 3. The present invention uses an input bevel gear, a reversing bevel gear and a reverse output bevel gear to form a coaxial commutator, so that the rotation output by the power unit is transmitted to the first crushing disc and the second crushing arm through the shaft and the bushing respectively. The first crushing tooth and the second crushing tooth pass through each other along the overlapping rotation trajectory during the reverse rotation process, so that the grass stems and roots entering the crushing space are driven, sheared and squeezed in opposite directions, thereby improving the entrainment and crushing degree of loose weeds, and the crushed material is discharged from the discharge port. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the overall bottom structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the overall structure of the present invention after the power unit has been removed.

[0020] Figure 4 This is a schematic diagram of the walking wheel height adjustment structure of the present invention.

[0021] Figure 5 This is a schematic diagram of the main crushing chamber and the front structure of the present invention.

[0022] Figure 6 This is a schematic diagram of the bottom structure after removing part of the external structure of the present invention.

[0023] Figure 7 This is a schematic diagram of the combined structure of the weeding mechanism, the weed pressing mechanism, and the rigid weed removal guide of the present invention.

[0024] Figure 8 This is a schematic diagram of the rigid weed-removing guide component of the present invention.

[0025] Figure 9 This is a schematic diagram of the weeding mechanism of the present invention.

[0026] Figure 10 This is a schematic diagram of the crushing mechanism of the present invention.

[0027] Figure 11 This is an exploded structural diagram of the crushing mechanism of the present invention.

[0028] Figure 12 This is a cross-sectional view of the coaxial commutator of the present invention.

[0029] In the diagram: 1. Main crushing chamber; 11. Power unit; 12. Rear baffle; 13. Front baffle; 14. Discharge port; 15. Traveling wheel; 151. Adjusting plate; 152. Height adjustment handle; 153. Positioning tooth; 154. Positioning pin; 2. Crushing mechanism; 21. First crushing disc; 211. First crushing tooth; 212. Shaft; 22. Second crushing arm; 221. Second crushing tooth; 222. Bushing; 23. Cutting blade; 24. Coaxial commutator; 241. Input bevel gear; 242. Reversing bevel gear; 243. Reverse output bevel gear; 3. Weeding mechanism; 31. Rotating support plate; 32. Hooking slant plate; 321. Weed insertion part; 322. Hook holding part; 33. Rigid weeding guide; 331. Arc-shaped support rod; 332. Disengagement part; 333. Guide part; 34. Transmission box; 4. Weed pressing mechanism; 41. Weed pressing roller; 42. Weed pressing support cover. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0031] like Figures 1 to 12As shown, the weeding device based on forestry maintenance provided by the present invention uses the supporting structure of a hand-push mower as the main body, and forms a continuous operation path of pressing, pulling, weeding guidance, crushing and filling gaps in the main crushing chamber 1 to reduce the residual grass roots in the soil and crush the pulled weeds.

[0032] In terms of specific structural installation, the structural body can be constructed according to the inventive concept of this embodiment. This embodiment does not impose special limitations on conventional fastening methods that do not affect the positional, movement, and fit relationships of each structure.

[0033] To clarify the orientation and positional relationship of each structure in this embodiment, the forward direction of the weeding device during normal weeding operation is taken as the reference. The side of the device facing the forward direction and close to the weed pressing mechanism 4 is the front end, and the side opposite to the forward direction and close to the operating handle is the rear end. The width direction of the main crushing chamber 1 is the left-right direction of the device.

[0034] The main crushing chamber 1 constitutes the main load-bearing structure of the device. The power unit 11 is fixedly installed above the main crushing chamber 1. The grass pressing mechanism 4, the grass pulling mechanism 3, and the crushing mechanism 2 are all installed inside the main crushing chamber 1 and arranged sequentially from the front end to the rear end, so that the weeds pass through the grass pressing mechanism 4, the grass pulling mechanism 3, and the crushing mechanism 2 in sequence as the device moves forward.

[0035] The grass pressing mechanism 4 includes a grass pressing roller 41 and a grass pressing support cover 42. The rear end of the grass pressing support cover 42 is hinged to the front end of the main crushing chamber 1. The grass pressing roller 41 is rotatably mounted on the front end of the grass pressing support cover 42. The grass pressing support cover 42 extends forward from the main crushing chamber 1 and supports both ends of the grass pressing roller 41, so that the grass pressing roller 41 can rotate with the ground contact state and press the upright weeds in front of the device toward the ground.

[0036] The hinged relationship between the grass-pressing support cover 42 and the main crushing chamber 1 allows the grass-pressing roller 41 to swing up and down with the undulation of the ground. The axis of the grass-pressing roller 41 extends along the width direction of the main crushing chamber 1, and its grass-pressing range corresponds to the working width of the rear grass-pulling mechanism 3, so that the pressed weeds enter the rotation range of the grass-hooking inclined plate 32.

[0037] The weeding mechanism 3 includes two rotating support disks 31, multiple weed-hooking inclined plates 32, and a rigid weed-removing guide 33. The two rotating support disks 31 are respectively rotatably installed on the inner walls of the left and right sides of the main crushing chamber 1. The two rotating support disks 31 are coaxially arranged opposite each other. The multiple weed-hooking inclined plates 32 are fixed between the two rotating support disks 31 at intervals along the circumference of the rotating support disks 31, so that the multiple weed-hooking inclined plates 32 rotate synchronously with the two rotating support disks 31.

[0038] Each grass-hooking inclined plate 32 includes a grass-inserting part 321 and a hook-holding part 322. The grass-inserting part 321 extends along the width direction of the main crushing chamber 1 and is arranged obliquely relative to the radial direction of the rotating support plate 31. The hook-holding part 322 is fixed at the end of the grass-inserting part 321 away from the axis of the rotating support plate 31 and is perpendicular to the grass-inserting part 321, so that the cross section of the grass-hooking inclined plate 32 is U-shaped.

[0039] When the rotating support plate 31 rotates, the grass insertion part 321 rotates downward with the rotating support plate 31 and inserts into the weeds pressed down by the grass pressing roller 41. Then the grass insertion part 321 rotates upward and applies a lifting action to the grass stems. The hook part 322 provided at the end of the grass insertion part 321 restricts the grass stems from slipping off the end of the grass insertion part 321, so that the weeds and their roots are removed from the soil layer under the continuous lifting of the hook grass inclined plate 32.

[0040] A transmission box 34 is fixedly installed above the front part of the main crushing chamber 1. The transmission box 34 is located at one end of the weeding mechanism 3 along the width direction of the main crushing chamber 1. The input end of the transmission box 34 faces the power device 11 and is connected to the power device 11 for transmission. The output end of the transmission box 34 faces the adjacent rotating support plate 31 and is connected to the rotating support plate 31 for transmission. In this embodiment, a first transmission belt is provided between the power device 11 and the transmission box 34, and a second transmission belt is provided between the transmission box 34 and the rotating support plate 31, so as to drive the two rotating support plates 31 and the weeding hooking plate 32 to rotate using the existing belt transmission structure.

[0041] A rear baffle 12 is fixedly installed on the rear side of the main crushing chamber 1. Two front baffles 13 are fixedly installed on the front side of the main crushing chamber 1. The two front baffles 13 are located at the left and right ends of the weeding mechanism 3 facing the crushing mechanism 2, respectively. The two front baffles 13 are located at the connection position between the weeding mechanism 3 and the crushing space inside the main crushing chamber 1. The rear baffle 12, the two front baffles 13 and the side wall of the main crushing chamber 1 together define the crushing space inside the main crushing chamber 1.

[0042] A grass-guiding channel is provided between the two front baffles 13. The grass-guiding channel extends from the weeding mechanism 3 toward the first crushing disc 21 and communicates with the crushing space. The rigid grass-removing guide 33 is fixed inside the main crushing chamber 1 and located between the two front baffles 13, so that the weeds brought up by the weeding mechanism 3 enter the grass-guiding channel through the rigid grass-removing guide 33.

[0043] The rigid weeding guide 33 includes an arc-shaped support rod 331, a disengagement part 332, and a guide part 333. The arc-shaped support rod 331 is fixed inside the main crushing chamber 1 and forms the main support body of the rigid weeding guide 33. The disengagement part 332 is connected to the end of the arc-shaped support rod 331 near the hooking inclined plate 32 and adjacent to the rotation path of the hooking inclined plate 32. The guide part 333 is connected to the end of the disengagement part 332 away from the hooking inclined plate 32 and extends upward toward the first crushing disc 21.

[0044] When the hook-shaped inclined plate 32 carrying weeds rotates to the position of the rigid weed-removing guide 33, the weeds come into contact with the detachment part 332 and are blocked by the detachment part 332. The hook-shaped inclined plate 32 continues to rotate, causing the weeds to detach from the insertion part 321 and the hook part 322. The detached weeds move backward along the guide part 333 and enter the area above the first crushing disc 21 through the guide channel between the two front baffles 13.

[0045] In this embodiment, the rigid weeding guide 33 is made of rigid material. When the grass roots pass through the detachment part 332 and the guide part 333, they can collide and scrape with the rigid weeding guide 33, causing some of the soil wrapped around the grass roots to separate from the grass roots. The separated soil can fall back to the ground from the bottom opening of the main crushing chamber 1. This soil separation function is an additional function of the rigid weeding guide 33 in the process of weeding and guiding grass in this embodiment.

[0046] The crushing mechanism 2 is located inside the rear side of the main crushing chamber 1 and includes a first crushing disc 21, a second crushing arm 22, a cutting blade 23 and a coaxial commutator 24. The housing of the coaxial commutator 24 is fixed inside the main crushing chamber 1 and located above the first crushing disc 21. Both the first crushing disc 21 and the second crushing arm 22 rotate around the vertical axis, and the second crushing arm 22 is located above the first crushing disc 21.

[0047] The coaxial commutator 24 includes an input bevel gear 241, a reversing bevel gear 242, and a reverse output bevel gear 243. The input bevel gear 241 is located on the upper side inside the coaxial commutator 24 and serves as the power input end. The input bevel gear 241 is directly fixed to the output end of the power unit 11 and is fixedly connected to the shaft 212. The reversing bevel gear 242 is rotatably mounted on the middle side inside the coaxial commutator 24 and meshes with the input bevel gear 241 and the reverse output bevel gear 243 respectively. The reverse output bevel gear 243 is located on the lower side inside the coaxial commutator 24 and is fixedly connected to the bushing 222.

[0048] The shaft 212 extends vertically through the bushing 222. The shaft 212 and the bushing 222 are coaxially arranged and can rotate relative to each other. The first crushing disc 21 is fixed on the outer side of the lower end of the shaft 212, and the second crushing arm 22 is fixed on the lower end of the bushing 222. In this embodiment, a bearing is provided between the shaft 212 and the bushing 222 to provide coaxial support for the shaft 212 and the bushing 222 and reduce friction when they rotate relative to each other.

[0049] When the power unit 11 drives the input bevel gear 241 to rotate, the input bevel gear 241 directly drives the shaft 212 and the first crushing disc 21 to rotate in the first direction. At the same time, the input bevel gear 241 drives the reverse output bevel gear 243 to rotate in the second direction opposite to the first direction through the reversing bevel gear 242. The reverse output bevel gear 243 drives the second crushing arm 22 to rotate in the second direction through the bushing 222, so that the first crushing disc 21 and the second crushing arm 22 keep coaxial and rotate in opposite directions.

[0050] Multiple sets of first crushing teeth 211 are fixed at intervals along the circumference of the first crushing disc 21 on the upper surface of the first crushing disc 21. Each set of first crushing teeth 211 is composed of multiple continuous bent tooth plates arranged in parallel along the radial direction of the first crushing disc 21, so that when the first crushing disc 21 rotates, it can support and carry the weeds into the crushing space from below.

[0051] The second crushing tooth 221 is disposed at the end of the second crushing arm 22. Each set of second crushing teeth 221 is composed of multiple plate-shaped teeth that are spaced apart along the width direction of the end of the second crushing arm 22 and extend downward. The first crushing tooth 211 and the second crushing tooth 221 are staggered along the height direction and have a crushing gap. When the first crushing disc 21 and the second crushing arm 22 rotate in opposite directions, the first crushing tooth 211 and the second crushing tooth 221 pass through each other along overlapping rotational trajectories.

[0052] The weeds fed into the first crushing disc 21 by the guide 333 enter the crushing gap under the reverse drive of the first crushing tooth 211 and the second crushing tooth 221. The continuously bent first crushing tooth 211 and the downwardly extending second crushing tooth 221 apply opposite directions of plucking, shearing and squeezing action to the grass stems and roots, so that the weeds and grass roots are crushed and confined within the crushing space jointly defined by the rear baffle 12, the front baffle 13 and the side wall of the main crushing chamber 1.

[0053] The discharge port 14 is located on the side wall of the main crushing chamber 1 and communicates with the crushing space. The crushed grass and roots are discharged through the discharge port 14 under the rotation of the first crushing disc 21 and the second crushing arm 22. In this embodiment, the discharge port 14 is only used as a discharge channel for crushed materials and no grass mulching structure is provided.

[0054] The cutting blade 23 is fixedly installed at the bottom end of the shaft 212 and located below the first crushing disc 21. The cutting blade 23 is adjacent to the bottom opening of the main crushing chamber 1, and its two ends extend radially along the main crushing chamber 1 to the mowing area behind the weeding mechanism 3, so that the cutting blade 23 can fill in and cut the weeds that have not been pulled up by the hooking plate 32 when it rotates with the shaft 212.

[0055] The main crushing chamber 1 has wheels 15 on both sides of the front and rear. Each wheel 15 is equipped with an adjusting plate 151, a height adjusting handle 152, a positioning tooth 153 and a positioning pin 154. The adjusting plate 151 is fixed to the outer wall of the main crushing chamber 1. The height adjusting handle 152 is L-shaped and its bend is hinged to the adjusting plate 151. The wheel 15 is rotatably connected to the downward-extending end of the height adjusting handle 152.

[0056] Positioning teeth 153 are spaced apart along the edge of the adjusting plate 151 toward the height adjusting handle 152. Positioning pins 154 are located on the side of the height adjusting handle 152 near the positioning teeth 153. During adjustment, the positioning pins 154 are disengaged from the current positioning teeth 153 and the height adjusting handle 152 is rotated. The height adjusting handle 152 drives the traveling wheel 15 to swing around its hinge position with the adjusting plate 151 to change the height of the traveling wheel 15 relative to the main crushing chamber 1. After adjustment, the positioning pins 154 are engaged with the corresponding positioning teeth 153 to lock the height position of the traveling wheel 15.

[0057] In this embodiment, the two traveling wheels 15 on both sides of the rear of the main crushing chamber 1 are set as power wheels. The two power wheels are respectively connected to the power device 11 through the existing belt drive structure so that the device can move forward when the power device 11 is working. The two traveling wheels 15 on both sides of the front of the main crushing chamber 1 move with the device and support the front of the device.

[0058] Before the actual weeding operation, the height of the four walking wheels 15 relative to the main crushing chamber 1 is adjusted according to the undulation of the forest ground, the height of the weeds, and the required position of the hooking plate 32 for entering the soil and hooking the weeds. This ensures that the pressing roller 41 can contact and press down the weeds, that the rotation path of the hooking plate 32 can pass through the pressed-down weeds, and that the cutting blade 23 maintains the required spacing for filling gaps in the cutting between it and the ground.

[0059] During weeding operations, the power unit 11 drives the two rear power wheels to move the device forward. The pressing roller 41 at the front first contacts the upright weeds and presses them down to the ground. Then, the support plate 31 rotates to drive the hooking plate 32 to rotate. The inserting part 321 is inserted into the pressed weeds and the hook part 322 restricts the weeds from slipping out, so that the weeds and roots are pulled upward and detached from the soil.

[0060] After the hooking plate 32 continues to rotate to the position of the rigid weeding guide 33, the detachment part 332 separates the weeds from the hooking plate 32. The guide part 333 guides the separated weeds through the weeding guide channel between the two front baffles 13 to the top of the first crushing disc 21. After the weeds enter between the first crushing tooth 211 and the second crushing tooth 221, they are crushed by the opposite driving force generated by the coaxial reverse rotation. The crushed material is discharged through the discharge port 14.

[0061] For weeds that are not effectively hooked by the hooking plate 32 or that cannot be pulled out due to the strong connection of the grass roots, the cutting blade 23 located below the first shredding disc 21 rotates with the shaft 212 and cuts them off, thereby reducing the phenomenon of missed weed removal on the ground surface on the basis of root removal treatment.

[0062] In summary, this invention utilizes a pressing roller 41, a hooking inclined plate 32, a rigid weeding guide 33, a first crushing disc 21, a second crushing arm 22, and a cutting blade 23 to form a continuous operating structure, enabling weeds to be sequentially pressed down, pulled up, detached, guided, crushed, and cut to fill gaps. Furthermore, a coaxial reversing device 24 causes the first crushing disc 21 and the second crushing arm 22 to rotate in opposite directions, thereby reducing weed root residue and improving the continuity of forestry maintenance weeding operations. Finally, it should be noted that the above description is only a preferred embodiment of the invention and is not intended to limit the invention. Although the invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A weeding device based on forestry maintenance, comprising a main crushing chamber (1) and a power unit (11), characterized in that: The power unit (11) is fixedly installed above the main crushing chamber (1). The main crushing chamber (1) is provided with a grass pressing mechanism (4), a grass pulling mechanism (3) and a crushing mechanism (2) in sequence along the forward direction. The grass pressing mechanism (4) includes a grass pressing support cover (42) and a grass pressing roller (41). The rear end of the grass pressing support cover (42) is hinged to the front end of the main crushing chamber (1), and the grass pressing roller (41) is rotatably mounted on the front end of the grass pressing support cover (42). The weeding mechanism (3) includes two rotating support discs (31) that are rotatably installed on the inner walls of both sides of the main crushing chamber (1), a plurality of hooking inclined plates (32) that are circumferentially fixed between the two rotating support discs (31), and a rigid weeding guide (33). The rigid weeding guide (33) is fixed inside the main crushing chamber (1) and located between the weeding mechanism (3) and the crushing mechanism (2). The crushing mechanism (2) includes a first crushing disc (21), a second crushing arm (22), and a coaxial commutator (24). The first crushing disc (21) is located inside the rear side of the main crushing chamber (1). The second crushing arm (22) is located above the first crushing disc (21). The rotation trajectories of the first crushing tooth (211) on the first crushing disc (21) and the second crushing tooth (221) at the end of the second crushing arm (22) overlap. The coaxial commutator (24) is fixed inside the main crushing chamber (1) and located above the first crushing disc (21). It is connected to the power device (11), the first crushing disc (21), and the second crushing arm (22) in a transmission connection. The first crushing disc (21) and the second crushing arm (22) rotate coaxially in opposite directions.

2. The weeding device based on forestry maintenance according to claim 1, characterized in that: A rear baffle (12) is fixedly installed on the rear side of the main crushing chamber (1), and two front baffles (13) are fixedly installed on the front side of the main crushing chamber (1). The two front baffles (13) are located at both ends of the weeding mechanism (3) facing the crushing mechanism (2). The rear baffle (12), the two front baffles (13) and the side wall of the main crushing chamber (1) together define the crushing space. A grass guiding channel is formed between the two front baffles (13) extending from the weeding mechanism (3) toward the first crushing disc (21) and communicating with the crushing space. A discharge port (14) communicating with the crushing space is opened on the side wall of the main crushing chamber (1).

3. The weeding device based on forestry maintenance according to claim 2, characterized in that: The rigid weed-removing guide (33) includes an arc-shaped support rod (331), a release part (332), and a guide part (333). The arc-shaped support rod (331) is fixed inside the main crushing chamber (1) and located between the two front baffles (13). The release part (332) is connected to the end of the arc-shaped support rod (331) near the hooking inclined plate (32) and adjacent to the rotation path of the hooking inclined plate (32). The guide part (333) is connected to the end of the release part (332) away from the hooking inclined plate (32) and extends upward toward the first crushing disc (21).

4. The weeding device based on forestry maintenance according to claim 1, characterized in that: The grass-hooking inclined plate (32) includes a grass-inserting part (321) and a hook-holding part (322). The grass-inserting part (321) is obliquely fixed between the two rotating support disks (31) and extends along the width direction of the main crushing chamber (1). The hook-holding part (322) is fixed at one end of the grass-inserting part (321) away from the axis of the rotating support disk (31) and is perpendicular to the grass-inserting part (321). The grass-inserting part (321) and the hook-holding part (322) together form a U-shaped cross section.

5. A weeding device based on forestry maintenance according to claim 1, characterized in that: Multiple sets of the first crushing teeth (211) are fixed to the upper surface of the first crushing disk (21) at intervals along the circumference of the first crushing disk (21). Each set of the first crushing teeth (211) includes multiple continuously bent tooth plates arranged in parallel along the radial direction of the first crushing disk (21). The second crushing teeth (221) includes multiple plate-shaped tooth plates arranged at intervals along the width direction of the end of the second crushing arm (22) and extending downward. The first crushing teeth (211) and the second crushing teeth (221) are staggered in the height direction and pass through each other when rotating in the opposite direction. A crushing gap is left between the first crushing teeth (211) and the second crushing teeth (221).

6. A weeding device based on forestry maintenance according to claim 1, characterized in that: The crushing mechanism (2) further includes a shaft (212) and a bushing (222). The shaft (212) passes vertically through the bushing (222) and rotates coaxially with the bushing (222). The first crushing disc (21) is fixed to the lower end of the shaft (212), and the second crushing arm (22) is fixed to the lower end of the bushing (222). The coaxial commutator (24) includes an input bevel gear (241), a reversing bevel gear (242), and a reverse output bevel gear (243). The input bevel gear (241) is disposed on... The coaxial commutator (24) is located on the upper inner side and directly fixed to the output end of the power unit (11). The upper end of the shaft (212) is fixed to the center of the input bevel gear (241). The reversing bevel gear (242) is rotatably mounted on the middle inner side of the coaxial commutator (24) and meshes with the input bevel gear (241) and the reverse output bevel gear (243) respectively. The reverse output bevel gear (243) is located on the lower inner side of the coaxial commutator (24) and is fixedly sleeved on the upper end of the bushing (222).

7. A weeding device based on forestry maintenance according to claim 6, characterized in that: A cutting blade (23) is fixedly installed at the lower end of the shaft (212). The cutting blade (23) is located below the first crushing disc (21) and adjacent to the bottom opening of the main crushing chamber (1). Both ends of the cutting blade (23) extend radially along the main crushing chamber (1) to the mowing area behind the weeding mechanism (3).

8. A weeding device based on forestry maintenance according to claim 1, characterized in that: It also includes four traveling wheels (15), which are respectively disposed on the front and rear sides of the main crushing chamber (1). Each traveling wheel (15) is provided with an adjustment plate (151), a height adjustment handle (152), a positioning tooth (153), and a positioning pin (154). The adjustment plate (151) is fixed to the outer wall of the main crushing chamber (1). The height adjustment handle (152) is L-shaped and the bent part is hinged to the outside of the adjustment plate (151). The traveling wheel (15) is rotatably connected to the downward-extending end of the height adjustment handle (152). The positioning teeth (153) are spaced along the edge of the adjustment plate (151) toward the height adjustment handle (152). The positioning pin (154) is disposed on the side of the height adjustment handle (152) near the positioning tooth (153) and cooperates with one of the positioning teeth (153).

9. A weeding device based on forestry maintenance according to claim 8, characterized in that: The two walking wheels (15) located on both sides of the rear of the main crushing chamber (1) are power wheels. The two power wheels are located on both sides of the main crushing chamber (1) and are connected to the power device (11) located above the main crushing chamber (1).

10. A weeding device based on forestry maintenance according to claim 1, characterized in that: A transmission box (34) is fixedly installed above the front of the main crushing chamber (1). The transmission box (34) is located at one end of the weeding mechanism (3) along the width direction of the main crushing chamber (1). The input end of the transmission box (34) is set towards the power device (11) and is connected to the power device (11) in a transmission manner. The output end of the transmission box (34) is set towards the adjacent rotating support disk (31) and is connected to the rotating support disk (31) in a transmission manner.

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