Weed mowing device and perennial grassland spring sowing weed control method

Abstract

The present application provides a kind of weed mowing equipment and perennial grass spring sowing weed control method.The kind of weed mowing equipment includes: frame structure, the frame structure includes cylinder support, and the side of the cylinder support is fixedly installed with front support by front support plate.The kind of weed mowing equipment provided by the present application can adjust mowing height by setting lifting cylinder to drive cutterhead to move up and down, can avoid hurting perennial grass seedling when mowing, improve the survival rate of perennial grass seedling, by setting adjusting cylinder and connecting plate, cutter mechanism can slide in cutter groove, realize the extension and retraction of cutter mechanism to change cutting radius, can face high-density weed area to contract cutting radius and reduce mowing resistance, face low-density weed to increase cutting radius and improve mowing efficiency, cutter mechanism can also be retracted when device does not work, play the protection effect to cutter mechanism.

Description

Technical Field

[0001] This invention relates to the field of weed cutting, and more particularly to a weed cutting device and a method for controlling spring-sown weeds in perennial grasslands. Background Technology

[0002] Perennial grass mixed-sowing artificial grassland is an important component of artificial grassland establishment. However, weed control is very difficult in the early stages of establishment, especially when multi-species and multifunctional species are mixed-sowing. On the one hand, monocot or dicot weed control agents cannot be used, and weed removal is usually done manually. However, early species identification is difficult when removing weeds manually, and if it is done later, the perennial seedlings are too weak to be removed. This is both labor-intensive and time-consuming. Weed growth can be restricted by multiple mowings, and weed reproduction can be eliminated, thereby promoting the growth of perennial plants.

[0003] Existing weed cutting equipment consists of an upper swing arm and a lower swing arm fixed at the upper and lower ends of a swing shaft, with a cutting shaft rotating between the upper and lower swing arms. A cutting component is mounted on the cutting shaft, and a motor drives the cutting component to perform cutting through the cutting shaft.

[0004] However, the existing equipment can only cut weeds of a certain height. Depending on the time after spring sowing, the height of the seedlings gradually changes, so it is necessary to adjust the height to accurately cut the weeds and avoid damaging the perennial grass seedlings.

[0005] Therefore, it is necessary to provide a weed cutting device and a method for controlling spring-sown weeds in perennial grasslands to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention provides a weeding device that solves the problem of cutting perennial grass seedlings when weeding perennial grasslands at different stages.

[0007] To solve the above-mentioned technical problems, the present invention provides a weed cutting device, comprising: a frame structure, the frame structure including a cylinder support, a front support fixedly installed on one side of the cylinder support via a front support plate, a side plate fixedly installed on the bottom of the cylinder support, a rear support plate fixedly installed on one side of the cylinder support, a rear support fixedly installed on the bottom of the rear support plate, a fixing sleeve one fixedly installed on the top of the rear support, a push shaft fixedly installed inside the fixing sleeve one, a fixing sleeve two fixedly installed on the bottom of the rear support, and a rear wheel axle fixedly installed inside the fixing sleeve two;

[0008] A lifting cylinder, wherein the lifting cylinder is fixedly installed inside the cylinder bracket;

[0009] An electric motor is fixedly installed at the bottom of the lifting cylinder, and a main shaft is fixedly installed at the output end of the motor.

[0010] The cutter head is fixedly installed at the bottom of the spindle, and four cutter grooves are evenly distributed inside the cutter head;

[0011] The cutting tool mechanism consists of four cutting tool mechanisms that are slidably mounted on both sides of the four cutting tool slots.

[0012] Preferably, a bushing is fixedly mounted on the surface of the spindle, a lifting block is slidably mounted on the surface of the bushing, four connecting plates are rotatably mounted on the surface of the lifting block, the four connecting plates are fixedly connected to a tool mechanism through eight rotating seats, a ring is fixedly mounted on the top of the tool disc, a spindle spring is fixedly mounted on the top of the ring, and a top ring is fixedly mounted on the top of the spindle spring.

[0013] Preferably, two rear wheels are symmetrically and rotatably mounted at both ends of the rear wheel axle, a hand frame is fixedly mounted on the surface of the push shaft, and two front wheel brackets are symmetrically and fixedly mounted on the bottom of the front bracket. Each of the two front wheel brackets is fixedly mounted with a front wheel via a rotating shaft.

[0014] Preferably, a pressure mechanism is fixedly installed at the bottom of the side plate. The pressure mechanism includes an adjusting cylinder, which is fixedly installed at the bottom of the side plate. A push plate is fixedly installed at the output end of the adjusting cylinder. An adjusting rod is fixedly installed at the top of the push plate. A ring is fixedly installed inside the push plate. A wear-resistant plate is fixedly installed at the bottom of the push plate.

[0015] Preferably, a pressure ring is fixedly installed on the top of the lifting block, and twelve rollers are fixedly and rotatably installed inside the pressure ring.

[0016] Preferably, both sides of the front bracket are fixedly mounted with contour slide rails, and contour wheel sliders are slidably mounted inside the contour slide rails. A contour wheel bracket is fixedly mounted on one side of the contour wheel slider, and a contour wheel axle is fixedly mounted at the bottom of the contour wheel bracket. A contour wheel is rotatably mounted on the surface of the contour wheel axle. An emergency stop switch is fixedly mounted on the inner wall of the contour slide rails, and a housing is fixedly mounted at the bottom of the cylinder bracket.

[0017] Preferably, a measuring connecting rod is fixedly installed on the inner side of the motor, a measuring rod is fixedly installed on one side of the measuring connecting rod, a measuring finger plate one is fixedly installed on one end of the measuring rod, a scale is slidably installed on one side of the measuring finger plate one, the scale is fixedly installed on one side of the imitation slide rail, a measuring push plate is fixedly installed on the top of the imitation wheel slider, a measuring finger plate two is fixedly installed on one side of the measuring push plate, and the measuring finger plate is slidably installed on one side of the scale.

[0018] Preferably, the four tool mechanisms are slidably mounted on both sides of the four tool slots. Each tool mechanism includes a tool holder, and the four tool holders are slidably mounted on both sides of the four tool slots. Sliding steps are fixedly mounted on both sides of the four tool holders. Sliding grooves are provided on both sides of the four tool slots. The sliding steps are slidably mounted on the surface of the sliding grooves. The tool holders are secured to a limit plate by locking nuts. A cutting blade is slidably mounted inside the tool holders. A buffer plate is fixedly mounted on one side of the cutting blade. Two buffer springs are fixedly mounted on one side of the buffer plate. A stop plate is fixedly mounted on one end of each of the two buffer springs. The stop plate is fixedly mounted inside the tool holders. Twelve cutting edges are evenly fixedly mounted on the circumferential side of the cutter disc.

[0019] Preferably, eight abutments are symmetrically fixedly installed on the top of each of the four tool holders. Each abutment is fixedly connected to a push plate by an anti-accidental contact spring. A push rod is fixedly installed on the surface of the push plate. The push rod is slidably installed on the top of the tool holder. An adjusting cylinder switch is fixedly installed on the top of the tool holder.

[0020] Compared with related technologies, the weed cutting equipment and spring-sown weed control method for perennial grasslands provided by this invention have the following beneficial effects: By setting a lifting cylinder to drive the cutter head to move up and down, the cutting height can be adjusted, which can avoid accidentally damaging perennial grass seedlings during cutting and improve the survival rate of perennial grass seedlings. By setting an adjusting cylinder and a connecting plate, the cutter mechanism can slide in the cutter groove, realizing the extension and retraction of the cutter mechanism to change the cutting radius. It can reduce the cutting radius and cut resistance when facing high-density weed areas, and increase the cutting radius and cut efficiency when facing low-density weeds. At the same time, it can solve the problem of blade entanglement. It can also retract the cutter mechanism when the device is not working, which plays a protective role for the cutter mechanism. Attached Figure Description

[0021] Figure 1 A schematic diagram of a preferred embodiment of a weed cutting device provided by the present invention;

[0022] Figure 2 for Figure 1 The diagram shows the structural design of the rack structure.

[0023] Figure 3 for Figure 1 The diagram shows the installation of the motor;

[0024] Figure 4 for Figure 1 The diagram shows the installation of the cutter head;

[0025] Figure 5 for Figure 1 The diagram shows the installation of the pressure mechanism;

[0026] Figure 6 for Figure 1 The diagram shows the structural connection relationship of the pressure mechanism;

[0027] Figure 7 for Figure 6 The diagram shows the structure of part A.

[0028] Figure 8 for Figure 7 The diagram shows the installation of the rollers;

[0029] Figure 9 A schematic diagram of the structure of a second embodiment of a weed cutting device;

[0030] Figure 10 Another schematic diagram of a second embodiment of a weed cutting device;

[0031] Figure 11 for Figure 9 The diagram shows the installation of the dial.

[0032] Figure 12 for Figure 11 The enlarged schematic diagram of section B is shown below;

[0033] Figure 13 for Figure 10 The diagram shows the installation of the cutting tool mechanism;

[0034] Figure 14 for Figure 13 An enlarged schematic diagram of section C is shown below;

[0035] Figure 15 for Figure 10 The diagram shows the structure of the cutting tool mechanism.

[0036] Figure 16 for Figure 15 The diagram shows the internal structure of the cutting tool mechanism.

[0037] Numbered in the diagram: 1. Frame structure; 101. Cylinder bracket; 102. Front support plate; 103. Front bracket; 104. Side plate; 105. Rear support plate; 107. Fixing sleeve two; 108. Rear wheel axle; 109. Push shaft; 110. Fixing sleeve one; 2. Lifting cylinder; 3. Housing; 4. Hand frame; 5. Front wheel bracket; 6. Front wheel; 7. Rear wheel; 8. Pressure mechanism; 801. Adjusting cylinder; 802. Push plate; 803. Adjusting rod; 804. Ring sleeve; 805. Wear-resistant plate; 9. Lifting block; 10. Tool mechanism; 1001. Tool holder; 1002. Sliding step; 1003. Locking nut; 1004. Locking plate; 1005. Cutting blade; 1006. Buffer plate; 1007. Buffer spring. 1008, Abutment plate; 11, Cutter head; 12, Bushing; 13, Motor; 14, Spindle; 15, Cutting edge; 16, Tool groove; 17, Slide groove; 18, Ring; 19, Spindle spring; 20, Connecting plate; 21, Measuring connecting rod; 22, Measuring rod; 23, Contouring slide rail; 24, Contouring wheel bracket; 25, Contouring wheel axle; 26, Contouring wheel; 27, Dial; 28, Contouring wheel slider; 29, Emergency stop switch; 30, Measuring groove; 31, Measuring plate; 32, Measuring finger plate; 33, Measuring push rod; 34, Adjusting cylinder switch; 35, Roller; 36, Pressure ring; 37, Rotating seat; 38, Abutment block; 39, Anti-accidental contact spring; 40, Push plate; 41, Push rod; 42, Measuring finger plate two; 43, Top ring. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0039] First Embodiment

[0040] Please refer to the following: Figures 1-8 A weed cutting device includes: a frame structure 1, the frame structure 1 including a cylinder bracket 101, a front bracket 103 fixedly installed on one side of the cylinder bracket 101 via a front support plate 102, a side plate 104 fixedly installed on the bottom of the cylinder bracket 101, a rear support plate 105 fixedly installed on one side of the cylinder bracket 101, a rear bracket 106 fixedly installed on the bottom of the rear support plate 105, a first fixing sleeve 110 fixedly installed on the top of the rear bracket 106, a push shaft 109 fixedly installed inside the first fixing sleeve 110, a second fixing sleeve 107 fixedly installed on the bottom of the rear bracket 106, and a rear wheel axle 108 fixedly installed inside the second fixing sleeve 107.

[0041] Lifting cylinder 2, which is fixedly installed inside the cylinder bracket 101;

[0042] Motor 13 is fixedly installed at the bottom of the lifting cylinder 2, and a main shaft 14 is fixedly installed at the output end of the motor 13;

[0043] The cutter head 11 is fixedly installed at the bottom of the spindle 14, and four cutter grooves 16 are evenly opened inside the cutter head 11;

[0044] The four cutting tool mechanisms 10 are slidably mounted on both sides of the four cutting tool slots 16.

[0045] A bushing 12 is fixedly mounted on the surface of the spindle 14. A lifting block 9 is slidably mounted on the surface of the bushing 12. Four connecting plates 20 are rotatably mounted on the surface of the lifting block 9. The four connecting plates 20 are fixedly connected to the tool mechanism 10 through eight rotating seats 37. A ring 18 is fixedly mounted on the top of the tool disc 11. A spindle spring 19 is fixedly mounted on the top of the ring 18. A top ring 43 is fixedly mounted on the top of the spindle spring 19.

[0046] Two rear wheels 7 are symmetrically rotated and mounted at both ends of the rear wheel axle 108. A hand frame 4 is fixedly mounted on the surface of the push shaft 109. Two front wheel brackets 5 are symmetrically fixedly mounted at the bottom of the front bracket 103. Both front wheel brackets 5 are fixedly mounted with front wheels 6 through a rotating shaft.

[0047] A pressure mechanism 8 is fixedly installed at the bottom of the side plate 104. The pressure mechanism 8 includes an adjusting cylinder 801, which is fixedly installed at the bottom of the side plate 105. A push plate 802 is fixedly installed at the output end of the adjusting cylinder 801. An adjusting rod 803 is fixedly installed at the top of the push plate 802. A ring 804 is fixedly installed inside the push plate 802. A wear-resistant plate 805 is fixedly installed at the bottom of the push plate 805.

[0048] A pressure ring 36 is fixedly installed on the top of the lifting block 9, and twelve rollers 35 are fixedly and rotatably installed inside the pressure ring 36.

[0049] In actual use, the side plate 105 has a through hole inside, the main shaft 12 is connected to the motor 13 through the through hole inside the side plate 105, and there is a gap between the sleeve shaft 12 and the ring sleeve 804.

[0050] The working principle of the weed cutting equipment and the method for controlling spring-sown weeds in perennial grassland provided by this invention is as follows:

[0051] First, by observing the height of the perennial seedlings, the cutting height is adjusted by the lifting cylinder 2 so that the blade mechanism 10 is higher than the seedlings. By observing the weed density, the adjusting cylinder 801 is adjusted to change the extension length of the blade mechanism 10.

[0052] Then, adjust the output end of the cylinder 801 to press against the push plate 802. The bottom of the push plate 802 is provided with a wear-resistant plate 805, which presses against the roller 35. The top ring 43 applies pressure upward through the main shaft spring 19 to press against the lifting block 9.

[0053] Then, the motor 13 drives the main shaft 14 to rotate, the main shaft 14 drives the cutter head 11 to rotate, and the main shaft 14 drives the bushing 12 to rotate. The cutter head 11 has four cutter grooves 16 inside. The cutter head 11 drives four cutter mechanisms 10 to cut weeds through the four cutter grooves 16. The cutter mechanism 10 drives the pressure ring 36 to rotate through the connecting plate 20 and the lifting block 9. The pressure ring 36 drives the roller 35 to roll on the wear-resistant plate 805. The cutter head 11 also drives the cutting edge 15 to perform circular motion.

[0054] Finally, push the hand frame 4 to move the device. If the device gets tangled during the movement, the adjusting cylinder 801 can be contracted and the spring 19 can be pressed upward to move the lifting block 9 upward. The lifting block 9 drives the four tool mechanisms 10 to contract through the four connecting plates 20. If the cutting device gets tangled, the device can be moved back a certain distance. The adjusting cylinder 801 can be contracted to retract the tool into the tool groove 16. The device can be moved back a certain distance and the adjusting cylinder 801 can be pressed to extend the tool mechanism 10 to cut again.

[0055] Compared with related technologies, the weed cutting device provided by the present invention has the following beneficial effects:

[0056] By setting the lifting cylinder 2 to drive the cutter head 11 to move up and down, the cutting height can be adjusted, which can avoid accidentally damaging perennial forage seedlings during cutting and improve the survival rate of perennial forage seedlings. By setting the adjusting cylinder 14 and the connecting plate 20, the cutter mechanism 10 can slide in the cutter groove 16, realizing the extension and retraction of the cutter mechanism 10, thereby changing the cutting radius. It can reduce the cutting radius and cut resistance when facing high-density weed areas, and increase the cutting radius and cut efficiency when facing low-density weeds. At the same time, it can deal with the problem of blade entanglement. It can also retract the cutter mechanism 10 when the device is not working, which plays a protective role for the cutter mechanism 10.

[0057] Second Embodiment

[0058] Please refer to the following: Figures 9-16 Based on the weeding device provided in the first embodiment of this application, the second embodiment of this application proposes another weeding device. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0059] Specifically, the second embodiment of this application provides a weed cutting device in which: both sides of the front support 103 are fixedly installed with contour slide rails 23; contour wheel sliders 28 are slidably installed inside the contour slide rails 23; a contour wheel bracket 24 is fixedly installed on one side of the contour wheel slider 28; a contour wheel axle 25 is fixedly installed at the bottom of the contour wheel bracket 24; a contour wheel 26 is rotatably installed on the surface of the contour wheel axle 25; an emergency stop switch 29 is fixedly installed on the inner wall of the contour slide rails 23; and a housing 3 is fixedly installed at the bottom of the cylinder support 101.

[0060] A measuring connecting rod 21 is fixedly installed on the inner side of the motor 13. A measuring rod 22 is fixedly installed on one side of the measuring connecting rod 21. A measuring finger plate 32 is fixedly installed at one end of the measuring rod 22. A scale 27 is slidably installed on one side of the measuring finger plate 32. The scale 27 is fixedly installed on one side of the imitation slide rail 23. A measuring push plate 33 is fixedly installed on the top of the imitation wheel slider 28. A measuring finger plate 42 is fixedly installed on one side of the measuring push plate 33. The measuring finger plate 42 is slidably installed on one side of the scale 27.

[0061] Four tool mechanisms 10 are slidably mounted on both sides of the four tool slots 16. Each tool mechanism 10 includes a tool holder 1001, and the four tool holders 1001 are slidably mounted on both sides of the four tool slots 16. Sliding steps 1002 are fixedly mounted on both sides of the four tool holders 1001. Sliding grooves 17 are formed on both sides of the four tool slots 16, and the sliding steps 1002 are slidably mounted on the surface of the sliding grooves 17. The tool holders 1001 are secured by locking nuts 100. A limiting plate 1004 is snapped in place. A cutting blade 1005 is slidably installed inside the tool holder 1001. A buffer plate 1006 is fixedly installed on one side of the cutting blade 1005. Two buffer springs 1007 are fixedly installed on one side of the buffer plate 1006. A stop plate 1008 is fixedly installed at one end of the two buffer springs 1007. The stop plate 1008 is fixedly installed inside the tool holder 1001. Twelve cutting blades 15 are evenly fixedly installed on the circumferential side of the cutter disc 11.

[0062] Eight abutments 38 are symmetrically fixedly installed on the top of each of the four tool holders 1001. Each abutment 38 is fixedly connected to a push plate 40 by an anti-accidental contact spring 39. A push rod 41 is fixedly installed on the surface of the push plate 40. The push rod 41 is slidably installed on the top of the tool holder 1001. An adjusting cylinder switch 34 is fixedly installed on the top of the tool holder 1001.

[0063] In actual use, when the tool mechanism 10 is in the retracted state during cutting, the cutting blade 1005 is located on the circumferential side of the cutting edge 15 to perform auxiliary cutting.

[0064] The working principle of the weed cutting device provided in this embodiment is as follows:

[0065] First, before the device is started, when adjusting the height, the lifting cylinder 2 drives the measuring connecting plate 21 to move up and down through the motor 13. The measuring connecting plate 21 drives the measuring finger plate 32 to move up and down through the measuring rod 22. The measuring finger plate 32 slides on the surface of the scale 27.

[0066] Then, when the device is started, the contour wheel 26 rolls on the ground. The contour wheel 26 drives the contour wheel bracket 24 to move up and down according to the different terrain. The contour wheel bracket 24 drives the measuring push rod 33 to move up and down through the contour wheel slider 28. The measuring push rod 33 drives the measuring finger plate 42 to move up and down.

[0067] Then, during the cutting process, when there is external resistance or an external impact load, the cutting blade 1005 will cause the buffer plate 1006 to retract into the blade holder 1001. When the external force disappears, it will reset through the buffer spring 1007. When cutting hard tree roots, the cutting blade 1005 will be subjected to a continuous external load. The cutting blade 1005 will cause the buffer plate 1006 to move. The buffer plate 1006 will compress the anti-accidental contact spring through the push rod 41. The push rod 41 will trigger the regulating cylinder switch 34 to regulate the air pressure. Cylinder 801 begins to reduce pressure, and the spindle spring 19 drives the lifting block 9 to move upward. The lifting block 9 drives the tool mechanism 10 to retract through the connecting plate 20 until the cutting blade 1005 is flush with the cutting edge 15. At this time, the cutting edge 15 cuts hard tree roots, and the cutting blade 1005 assists in cutting weeds. After cutting the tree roots, the cutting blade 1005 is no longer subjected to continuous load. The regulating cylinder switch 34 will send a signal to the regulating cylinder 801 to reapply pressure after a delay of 1-2 seconds, so that the tool mechanism 10 resets.

[0068] Finally, during the cutting process, farmers may need to adjust the cutting height a second time depending on the type of perennial forage grass in front of them. The lifting cylinder 2 is driven by the main shaft 12 to move the cutter head 11 up and down. The up and down movement of the cutter head 11 causes the connecting plate 20 to swing up and down, pushing the cutter mechanism 10 to extend and retract.

[0069] Compared with related technologies, the weed cutting device provided in this embodiment has the following beneficial effects:

[0070] By setting the measuring finger plate 32 and the scale 27, the actual distance between the cutter and the ground can be accurately measured. By setting the contour wheel 26 and the measuring finger plate 42, the actual distance of the device recessed in the soil can be measured. By observing the measuring finger plates 32 and 42 on the scale 27, the distance between the ground and the cutting blade 1005 can be directly observed. By setting the buffer spring 1007, the instantaneous impact force when the cutting blade is subjected to impact load can be reduced, extending the service life of the cutting blade 1005. By setting the buffer plate 1006 and adjusting the cylinder switch 34, the cutting speed can be controlled. When the cutter 1005 cuts the tree root, the cutting mechanism 10 retracts the blade in time. By setting the cutting edge 15 and the cutting blade 1005, when the cutting mechanism 10 is in the retracted state, the cutting edge 15 mainly cuts the tree root, and the cutting blade 1005 cuts the weeds around the cutting edge, avoiding the cutting edge 15 from getting tangled. By setting the lifting cylinder 2 to drive the cutter disc 11 to move up and down, the cutting mechanism 10 can be extended and retracted. This allows the device to increase the cutting radius when cutting small weeds with high roots and stems, thus improving the cutting efficiency, and to reduce the cutting radius when cutting thick weeds with low roots and stems, thus reducing the cutting resistance.

[0071] A method for controlling spring-sown weeds in perennial grasslands

[0072] S1: When the perennial seedlings have just taken shape after sowing and are 2-3 cm tall, weeds and annual plants need to be cut. Adjust the lifting cylinder 2 so that the blade mechanism 10 is 5-6 cm away from the bottom (to avoid cutting the branch nodes). Cut the weeds and annual plants close to the seedlings without damaging them, so that the branches and leaves of the weeds no longer block the growth of the perennial seedlings.

[0073] S2: After the first cut weeds and low-growing weeds have grown for 15-20 days, when the weeds are expected to be taller than the seedlings, a second cut is needed when they have just grown to 9-10 cm and are slightly taller than the forage seedlings. At this time, the height of the perennial forage seedlings should be 2-3 cm higher than that of the perennial forage seedlings during the first cut. Adjust the lifting cylinder 2 so that the blade mechanism 10 is 7-8 cm above the ground to cut the weeds.

[0074] S3: 10-15 days after the second mowing, the weeds enter a rapid growth period. Mowing should be done during this rapid growth period, before flowering. At this time, the weed stems are tender and have poor regeneration ability. The pasture grass has passed the seedling stage and the height of the weeds is once again higher than that of the perennial pasture grass. The perennial pasture grass should not be accidentally damaged. The lifting cylinder 2 needs to be adjusted so that the blade mechanism 10 is 10 cm above the ground for the third mowing, so that the branches and leaves of the weeds no longer block the perennial pasture grass.

[0075] Compared with related technologies, the method for controlling spring-sown weeds in perennial grasslands proposed in this application has the following beneficial effects:

[0076] Step 1 avoids directly cutting weeds by bypassing perennial grass seedlings. By adjusting the time interval between steps 1 and 2, the device can be adjusted to different cutting heights according to the different stages of the perennial grass seedlings, so that the perennial grass seedlings in the growth stage will not be accidentally damaged when cutting weeds. Step 3 is to cut the weeds before they enter the rapid growth stage and before they flower, which can reduce the weed sowing rate.

[0077] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A weed cutting device, characterized in that, include: The frame structure includes a cylinder bracket, a front bracket fixedly mounted on one side of the cylinder bracket via a front support plate, a side plate fixedly mounted on the bottom of the cylinder bracket, a rear support plate fixedly mounted on one side of the cylinder bracket, a rear bracket fixedly mounted on the bottom of the rear support plate, a first fixing sleeve fixedly mounted on the top of the rear bracket, a push shaft fixedly mounted inside the first fixing sleeve, a second fixing sleeve fixedly mounted on the bottom of the rear bracket, and a rear wheel axle fixedly mounted inside the second fixing sleeve. A lifting cylinder, wherein the lifting cylinder is fixedly installed inside the cylinder bracket; An electric motor is fixedly installed at the bottom of the lifting cylinder, and a main shaft is fixedly installed at the output end of the motor. A cutter head is fixedly installed at the bottom of the spindle, and four cutter grooves are evenly distributed inside the cutter head; The cutting tool mechanism, comprising four cutting tool mechanisms, is slidably mounted on both sides of the four cutting tool slots; A bushing is fixedly mounted on the surface of the spindle. A lifting block is slidably mounted on the surface of the bushing. Four connecting plates are rotatably mounted on the surface of the lifting block. The four connecting plates are fixedly connected to a tool mechanism via eight rotating seats. A ring is fixedly mounted on the top of the cutter head. A spindle spring is fixedly mounted on the top of the ring. A top ring is fixedly mounted on the top of the spindle spring. A pressure mechanism is fixedly mounted on the bottom of the side plate. The pressure mechanism includes an adjusting cylinder, which is fixedly mounted on the bottom of the side plate. A push plate is fixedly mounted on the output end of the adjusting cylinder. Four tool mechanisms are slidably mounted on both sides of the four tool slots. Each tool mechanism includes a tool holder. The four tool holders are slidably mounted on both sides of the four tool slots. Sliding steps are fixedly mounted on both sides of the four tool holders. Sliding grooves are opened on both sides of the four tool slots. The sliding steps are slidably mounted on the surface of the sliding grooves. The tool holders are locked with limit plates by locking nuts. A cutting blade is slidably mounted inside the tool holders. A buffer plate is fixedly installed on one side of the cutter, and two buffer springs are fixedly installed on one side of the buffer plate. A stop plate is fixedly installed at one end of each of the two buffer springs. The stop plate is fixedly installed inside the cutter holder. Twelve cutting edges are evenly fixedly installed on the circumference of the cutter disc. Eight stop blocks are symmetrically fixedly installed on the top of each of the four cutter holders. A push plate is fixedly connected to the stop block by an anti-accidental contact spring. A push rod is fixedly installed on the surface of the push plate. The push rod is slidably installed on the top of the cutter holder. An adjusting cylinder switch is fixedly installed on the top of the cutter holder. The buffer plate compresses the anti-accidental contact spring through the push rod. The push rod triggers the adjusting cylinder switch. The adjusting cylinder begins to reduce the pressure. The spindle spring drives the lifting block to move upward. The lifting block drives the cutter mechanism to retract through the connecting plate until the cutter is flush with the cutting edge. At this time, the cutting edge cuts hard tree roots. The cutter assists in cutting weeds. After cutting the tree roots, the cutter is no longer subjected to continuous load. The adjusting cylinder switch will send a signal to the adjusting cylinder to reapply pressure after a delay of 1-2 seconds, so that the cutter mechanism resets.

2. The weed cutting device according to claim 1, characterized in that, Two rear wheels are symmetrically and rotatably mounted at both ends of the rear axle. A hand frame is fixedly mounted on the surface of the push shaft. Two front wheel brackets are symmetrically and fixedly mounted at the bottom of the front bracket. Each of the two front wheel brackets is fixedly mounted with a front wheel via a rotating shaft.

3. The weed cutting device according to claim 1, characterized in that, An adjusting rod is fixedly installed on the top of the push plate, a ring is fixedly installed inside the push plate, and a wear-resistant plate is fixedly installed on the bottom of the push plate.

4. The weed cutting device according to claim 1, characterized in that, A pressure ring is fixedly installed on the top of the lifting block, and twelve rollers are fixedly and rotatably installed inside the pressure ring.

5. The weed cutting device according to claim 1, characterized in that, Both sides of the front bracket are fixedly mounted with contour slide rails, and contour wheel sliders are slidably mounted inside the contour slide rails. A contour wheel bracket is fixedly mounted on one side of the contour wheel slider, and a contour wheel axle is fixedly mounted on the bottom of the contour wheel bracket. A contour wheel is rotatably mounted on the surface of the contour wheel axle. An emergency stop switch is fixedly mounted on the inner wall of the contour slide rail, and a housing is fixedly mounted on the bottom of the cylinder bracket.

6. A weed cutting device according to claim 5, characterized in that, A measuring connecting rod is fixedly installed on the inner side of the motor. A measuring rod is fixedly installed on one side of the measuring connecting rod. A measuring finger plate one is fixedly installed on one end of the measuring rod. A scale is slidably installed on one side of the measuring finger plate one. The scale is fixedly installed on one side of the contour slide rail. A measuring push plate is fixedly installed on the top of the contour wheel slider. A measuring finger plate two is fixedly installed on one side of the measuring push plate. The measuring finger plate two is slidably installed on one side of the scale.

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