A profiling and follow-up root cutting device for jet-type restoration of grassland forage

Abstract

The invention discloses a contour-following root cutting device for restoration of grassland forage by jet type, comprising a shunt pipe, a nozzle, a limiting sleeve, a swivel connecting frame, a clamping mechanism, a limiting anti-swivel supporting mechanism, and a height-adjusting limiting mechanism. The limiting sleeve with adjustable length is used to limit the distance between various jet devices so as to control the spacing between the rhizomes of grass root cut in the grassland. The limiting sleeve can be extended and locked by utilizing the clamping mechanism. The limiting supporting ring is used to fix the positions of two adjacent limiting sleeves and is fixedly connected with two limiting rods. The upper and lower limiting rods limit the swivel range of the swivel connecting frame. The swivel connecting frame and the tightening spring are used to tighten the upper limit plate on the spring downward so that the universal wheel can always be in contact with the ground. The height-adjusting limiting mechanism can adjust the height of the nozzle from the ground so as to adapt to grasslands with different densities and different flatness, thereby ensuring the cutting efficiency and avoiding damage to the nozzle.

Description

Technical Field

[0001] The present invention relates to the field of agricultural machinery and equipment, and specifically to a profiling follow-up root cutting device for jet-type grassland forage restoration. Background Technique

[0002] The Leymus chinensis in the grassland is a perennial rhizomatous grass with well-developed rhizomes, mainly distributed in the soil layer of 5 - 15 cm. Coupled with the long-term lack of rest, overgrazing, and trampling and grazing by livestock in the grassland, as the growth years extend, the rhizomes are intertwined, resulting in serious soil compaction in the grassland, poor air permeability, weak growth, and a decline in the yield of Leymus chinensis. Therefore, after the Leymus chinensis grassland is utilized for 5 - 6 years, a Leymus chinensis root cutter is usually used to cut the rhizomes to promote the asexual reproduction of Leymus chinensis and maintain the continuous high yield of the Leymus chinensis grassland. In related technologies, the corrugated cutter head cuts roots and the subsoiler loosens the soil, and the trenching causes great disturbance to the grassland, and the soil is easily blown away by the wind, resulting in land desertification, so a ground wheel is needed for compaction. The current main disadvantages are that the natural grassland soil is compacted, the trenching resistance is large, the stones existing in the grassland are easy to cause damage to the soil-contact components and failure, and the power consumption for root cutting, soil loosening and compaction is large, resulting in low adaptability, reliability and economy of the root cutting and fertilizing machine, which restricts the large-scale improvement benefit of the degraded grassland. Water jet cutting is that high-pressure water forms a high-energy jet beam with a speed several times that of the speed of sound after passing through the small holes of a specially designed nozzle. This jet has huge kinetic energy. When the jet beam acts on the object to be cut and the impact force generated reaches the material failure limit, cutting or crushing can be carried out. Most of the existing jet-type weeding machines have the following problems: (1) The distance between the nozzle tips is fixed and cannot be adjusted. The growth distance of Leymus chinensis is not fixed. Using one distance cannot efficiently complete the excision of the rhizomes of Leymus chinensis, which will lead to a reduction in work efficiency and waste a lot of time; (2) The distance between the nozzle tip and the ground is not convenient to adjust and cannot adapt to grasslands with different densities and different flatness degrees. Summary of the Invention

[0003] The purpose of the present invention is to provide a profiling follow-up root cutting device for jet-type grassland forage restoration to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A profiling follow-up root cutting device for jet-type grassland forage restoration, including a shunt pipe and nozzle tips, and also including a limit sleeve, a rotary connection frame, a clamping mechanism, a limit anti-rotation support mechanism, and a height adjustment limit mechanism;

[0005] A number of limit sleeves are sleeved and connected on the shunt pipe. A clamping mechanism is arranged on the limit sleeve. The limit sleeve is a telescopic structure, and the telescopic amount is adjusted and locked through the clamping mechanism; An external limit anti-rotation support mechanism is arranged between adjacent two limit sleeves. After the ends of adjacent two limit sleeves are aligned and spliced, they are fixed through the limit anti-rotation support mechanism;

[0006] A limit anti-rotation support mechanism is sleeved on the limit sleeve. One end of the limit anti-rotation support mechanism is connected to the rotary connection frame. The other end of the rotary connection frame is hinged to the height adjustment limit mechanism. A spray head pipe is arranged in the middle of the height adjustment limit mechanism. A spray head nozzle is installed at the lower end of the spray head pipe. A universal wheel is arranged at the bottom of the front end of the height adjustment limit mechanism. The universal wheel rolls on the ground, and the height adjustment limit mechanism adjusts the relative position between the spray head nozzle and the ground.

[0007] One end of the upper end of the spray head pipe is fixedly connected to one end of a hose. The other end of the hose is communicated with a shunt pipe. Pressure liquid is transmitted in the shunt pipe. The shunt pipe is communicated with the spray head nozzle through the hose and the spray head pipe, so that the pressure liquid in the shunt pipe is transmitted to the spray head nozzle and sprayed out through the spray head nozzle.

[0008] Preferably, the limit sleeve includes an outer sleeve and an inner sleeve. One end of the outer sleeve is provided with a fixed end, and the fixed end is connected to the shunt pipe in an interference fit. The end of the outer sleeve far from the fixed end is slidably sleeved with the inner sleeve, and the inner sleeve is slidably connected to the shunt pipe. A ratchet bayonet is arranged on the outer end face of the inner sleeve. The clamping mechanism includes a first claw and a second claw. One end of the first claw passes through a first groove and is clamped with the ratchet bayonet on the inner sleeve. The other end of the first claw is hinged to one end of a hinge rod. The middle of the hinge rod is hinged to one end of a first support. The other end of the first support is fixed on the outer sleeve. One end of the second claw passes through a second groove and is clamped with the ratchet bayonet on the inner sleeve. The middle of the second claw is hinged to one end of a second support. The other end of the second support is fixed on the outer sleeve. The other end of the second claw is closely attached to one end of a spring piece, and the other end of the spring piece is fixed on the outer sleeve. The second groove and the first groove are arranged on the outer sleeve.

[0009] Preferably, the limit anti-rotation support mechanism includes two limit support rings. The two limit support rings are respectively fixed on two adjacent limit sleeves. Two limit rods distributed circularly are arranged between the two limit support rings, and both ends of the limit rods are fixedly connected to the limit support rings on both sides through bolts.

[0010] Preferably, the rotary connection frame includes a rotary joint, a rotary hinge joint and a connecting rod. A rotary joint is arranged between two limit support rings fixedly connected by limit rods. The rotary joint is rotatably connected to the limit sleeve. One end of the connecting rod is fixedly connected to the rotary joint. The other end of the connecting rod is fixedly connected with a rotary hinge joint. The rotary hinge joint is hinged to the upper end of the side of the height adjustment limit mechanism far from the universal wheel. One end of a set screw spring is fixedly connected to the end of the connecting rod close to the rotary hinge joint, and the other end of the set screw spring is fixed on the limit rod.

[0011] Preferably, the rotary joint is rotatably connected to a pin shaft. The pin shaft is fixed on a connecting seat, and the connecting seat is fixedly connected to the spring upper limit plate through bolts.

[0012] Preferably, a plurality of uniformly arranged tip devices are provided inside each of the limiting support rings. The tip devices pass through the limiting sleeves and are tightly fixed to the shunt pipes inside the limiting sleeves.

[0013] Preferably, the height-adjusting and limiting mechanism includes a spring upper limiting plate, a guide rod, a height-adjusting plate, a shock-absorbing spring, and an adjusting drive structure for adjusting the relative height between the nozzle and the universal wheels;

[0014] The guide rod includes a first guide rod and a second guide rod. The upper end of the first guide rod is fixedly connected to one end of the spring upper limiting plate, and the lower end passes through and is slidably connected to the height-adjusting plate; the upper end of the second guide rod passes through and is slidably connected to one end of the spring upper limiting plate, and the lower end is fixedly connected to one end of the height-adjusting plate. The middle part of the height-adjusting plate is slidably connected to the nozzle pipe. The nozzle pipe passes through the height-adjusting plate, and the nozzle is located below the height-adjusting plate. A shock-absorbing spring is sleeved outside the nozzle pipe. The upper end of the shock-absorbing spring contacts the spring upper limiting plate, and the lower end contacts the height-adjusting plate. The shock-absorbing spring is in a compressed state. The upper end of the nozzle pipe passes through the spring upper limiting plate and is fixedly connected to the spring upper limiting plate. The end of the nozzle pipe passing through the spring upper limiting plate is connected to one end of the hose. The adjusting drive structure can adjust the distance between the height-adjusting plate and the spring upper limiting plate.

[0015] Preferably, the adjusting drive structure is installed at the lower end of the first guide rod. The adjusting drive structure includes a threaded portion and a driving nut. The threaded portion is provided at the lower end of the first guide rod, and the lower end of the threaded portion passes through the height-adjusting plate. The end of the threaded portion passing through the height-adjusting plate is threadedly connected to the driving nut, and the upper end of the driving nut presses against and contacts the lower end surface of the height-adjusting plate.

[0016] Preferably, the adjusting drive structure is installed outside the nozzle pipe. The adjusting drive structure includes a sleeve rod, a first gear, and a second gear. The sleeve rod is sleeved on the nozzle pipe and is rotatably connected to the nozzle pipe. The upper end of the sleeve rod passes through the spring upper limiting plate and is rotatably connected to the spring upper limiting plate. The lower end of the sleeve rod is threadedly connected to the middle part of the height-adjusting plate. The upper end of the sleeve rod is fixedly connected to the first gear. The first gear meshes with the second gear. The second gear is fixedly connected to an adjusting handle. The adjusting handle is rotatably connected to the spring upper limiting plate. The spring upper limiting plate and the nozzle pipe are fixedly connected through a nozzle pipe bracket.

[0017] Preferably, the lower end of the shock-absorbing spring is fixedly connected to a spring lower limiting plate, and the spring lower limiting plate is slidably connected to the nozzle pipe.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The shunt pipe of the present invention is provided with a limit sleeve with adjustable length, which is used to limit the distance between each jet device so as to control the spacing of the grassland cut root rhizomes. When the requirements for the cut root spacing of the pasture in the grassland change, sleeves of different lengths can be selected to control the spacing. The distance between each jet device is preferably 300 mm.

[0020] 2. The limit sleeve of the present invention is provided with a clamping mechanism. By using the clamping mechanism, the limit sleeve can be telescoped and locked, so as to conveniently adjust the distance between each nozzle, so as to adapt to the needs of different Leymus chinensis grasslands, improve the working efficiency of root cutting and save time.

[0021] 3. The present invention is provided with a limit anti-rotation support mechanism. The limit support ring is used to fix the positions of two adjacent limit sleeves and is fixedly connected to two limit rods. In addition, the upper and lower limit rods play a role in restricting the rotation range of the rotary connection frame.

[0022] 4. The rotary connection frame and the set screw spring of the present invention are used to pull down the spring upper limit plate, so that the universal wheel can always be in contact with the ground.

[0023] 5. The present invention is provided with a height adjustment limit mechanism, which can adjust the height of the nozzle from the ground so that the nozzle can successfully avoid obstacles when encountering obstacles.

[0024] 6. The top device provided by the present invention passes through the limit sleeve on the limit support ring and directly acts on the shunt pipe, which is used to limit the relative rotation between the limit sleeve and the shunt pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the main structure of the root cutting device of the present invention;

[0026] Figure 2 is a front view structural schematic diagram of the root cutting device of the present invention;

[0027] Figure 3 is a schematic diagram of the position of the clamping mechanism of the present invention;

[0028] Figure 4 is a structural schematic diagram of the clamping mechanism of the present invention;

[0029] Figure 5 is a structural schematic diagram of the height adjustment limit mechanism of Embodiment 2;

[0030] Figure 6 is Figure 5 a partial enlarged view of part A of

[0031] In the figure: 1. Shunt pipe, 2. Hose, 3. Limit support ring, 4. Limit rod, 5. Limit sleeve, 6. Tip device, 7. Rotary connecting frame, 701. Rotary joint, 702. Rotary hinge joint, 703. Connecting rod, 8. Set spring, 9. Connecting seat, 10. Pin shaft, 11. Sprinkler pipe support, 12. Upper spring limit plate, 13. Lower spring limit plate, 14. Shock-absorbing spring, 15. Guide rod, 1501. First guide rod, 1502. Second guide rod, 16. Height adjustment plate, 17. Sprinkler pipe, 18. Sprinkler nozzle, 19. Universal wheel, 20. Clamping mechanism, 2001. First claw, 2002. Hinge rod, 2003. First support, 2004. Second claw, 2005. Second support, 2006. Spring piece, 2007. Second groove, 2008. First groove, 21. Sleeve rod, 22. First gear, 23. Second gear, 24. Adjusting handle, 25. Threaded part, 26. Driving nut. Detailed implementation mode

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1: Please refer to Figures 1-4 , the present invention provides a technical solution:

[0034] A jet-type profiling follow-up root cutting device for grassland forage restoration includes a shunt pipe 1 and a sprinkler nozzle 18. The profiling follow-up root cutting device of the present invention is carried by a tractor. A water tank and a high-pressure water pump are provided on the tractor. The water in the water tank is converted into high-pressure water by the high-pressure water pump and sent to the shunt pipe 1, then shunted into each hose 2, and finally enters the sprinkler pipe 17. The front end is in direct contact with the ground by the universal wheel 19. While the machine is moving forward, the high-pressure water is sprayed out from the sprinkler nozzle 18, and then the basic work of cutting the roots of grassland forage is completed. A total of 12 jet-type profiling follow-up root cutting devices are arranged on the shunt pipe 1. Only one of them is taken as an example for introduction in the present invention.

[0035] A jet-type profiling follow-up root cutting device for grassland forage restoration further includes a limit sleeve 5, a rotary connecting frame 7, a clamping mechanism 20, a limit anti-rotation support mechanism, and a height adjustment limit mechanism.

[0036] A number of limiting sleeves 5 are sleeved and connected on the shunt pipe 1. A clamping mechanism 20 is arranged on the limiting sleeve 5. The limiting sleeve 5 is a telescopic structure, and the telescopic amount is adjusted and locked through the clamping mechanism 20. The limiting sleeve 5 includes an outer sleeve 51 and an inner sleeve 52. One end of the outer sleeve 51 is provided with a fixed end 53, and the fixed end 53 is connected with the shunt pipe 1 through overfit. One end of the outer sleeve 51 far from the fixed end 53 is sleeved and slidably connected with the inner sleeve 52, and the inner sleeve 52 is slidably connected with the shunt pipe 1. A ratchet bayonet 521 is arranged on the outer end face of the inner sleeve 52. The clamping mechanism 20 includes a first claw 2001 and a second claw 2004. One end of the first claw 2001 passes through the first slot 2008 and is clamped with the ratchet bayonet 521 on the inner sleeve 52. The other end of the first claw 2001 is hinged with one end of a hinge rod 2002. The middle of the hinge rod 2002 is hinged with one end of a first support 2003, and the other end of the first support 2003 is fixed on the outer sleeve 51. One end of the second claw 2004 passes through the second slot 2007 and is clamped with the ratchet bayonet 521 on the inner sleeve 52. The middle of the second claw 2004 is hinged with one end of a second support 2005, and the other end of the second support 2005 is fixed on the outer sleeve 51. The other end of the second claw 2004 is closely attached to one end of a spring piece 2006, and the other end of the spring piece 2006 is fixed on the outer sleeve 51. The second slot 2007 and the first slot 2008 are arranged on the outer sleeve 51. When it is necessary to adjust the distance between the nozzle tips 18, the hinge rod 2002 is pushed. The hinge rod 2002 drives the first claw 2001 to move. The first claw 2001 pushes the ratchet bayonet 521 on the inner sleeve 52 to make the inner sleeve 52 slide outside the shunt pipe 1. The spring piece 2006 and the second claw 2004 play a reverse locking role. When it is necessary to move in the reverse direction, the tail end of the second claw 2004 is pressed and the hinge rod 2002 is pushed in the reverse direction. While the tip of the second claw 2004 is away from the ratchet bayonet 521 on the inner sleeve 52, the tail end of the second claw 2004 compresses the spring piece 2006. The hinge rod 2002 drives the first claw 2001 to tilt upward, making the first claw 2001 away from the inner sleeve 52. At this time, the inner sleeve 52 can be moved. After the movement is completed, the first claw 2004 and the hinge rod 2002 are released to make the first claw 2001 and the second claw 2004 clamped with the ratchet bayonet 521 on the inner sleeve 52. At this time, the position of the limiting sleeve 5 can be fixed. The limiting sleeve 5 drives the nozzle tip 18 to move, so as to control the distance between two nozzle tips, so as to adapt to the needs of different Leymus chinensis grasslands and improve the working efficiency of root cutting. The limiting sleeve 5 is used to limit the distance between each jet device to control the spacing of the grassland root cutting rhizomes. When the requirements for the root cutting spacing of the pasture in the grassland change, the length can be adjusted to control the spacing. The distance between each jet device is preferably 300 mm.

[0037] An anti-rotation support mechanism is provided externally between two adjacent limiting sleeves 5. After the ends of two adjacent limiting sleeves 5 are aligned and spliced, they are fixed by the anti-rotation support mechanism. The anti-rotation support mechanism includes two limiting support rings 3, which are respectively fixed on two adjacent limiting sleeves 5. Two circularly distributed limiting rods 4 are arranged between the two limiting support rings 3, and both ends of the limiting rods 4 are fixed to the limiting support rings 3 on both sides by screws. The limiting support rings 3 are used to fix the positions of two adjacent limiting sleeves 5 and are fixedly connected to the two limiting rods 4. In addition, the upper and lower two limiting rods 4 play a role in restricting the rotation range of the rotary connection frame 7. A number of evenly arranged tip devices 6 are provided inside each limiting support ring 3, preferably three tip devices 6. The tip devices 6 pass through the limiting sleeves 5 and are tightly fixed to the flow divider pipe 1 inside the limiting sleeves 5. The tip devices 6 act directly on the flow divider pipe 1 through the limiting sleeves 5 from the limiting support rings 3, and are used to limit the relative rotation between the limiting sleeves 5 and the flow divider pipe 1. Among them, the tip devices 6 on both sides are respectively inserted into the inner sides of the outer sleeve 51 and the inner sleeve 52.

[0038] A limiting anti-rotation support mechanism is sleeved and connected on the limiting sleeve 5. One end of the limiting anti-rotation support mechanism is connected to the rotary connection frame 7, and the other end of the rotary connection frame 7 is hinged to the height-adjusting limiting mechanism. The rotary connection frame 7 includes a rotary joint 701, a rotary hinge joint 702, and a connecting rod 703. A rotary joint 701 is arranged between two limiting support rings 3 fixedly connected by a limiting rod 4. The rotary joint 701 is rotatably connected to the limiting sleeve 5. One end of the connecting rod 703 is fixedly connected to the rotary joint 701, and the other end of the connecting rod 703 is fixedly connected to a rotary hinge joint 702. The rotary hinge joint 702 is hinged to the upper end of the side away from the universal wheel 19 of the height-adjusting limiting mechanism. One end of a set screw spring 8 is fixedly connected to the end of the connecting rod 703 close to the rotary hinge joint 702, and the other end of the set screw spring 8 is fixed to the limiting rod 4. The set screw spring 8 is a tension spring, which is used to pull down the rotary connection frame 7 downward, so that the universal wheel 19 can always be in contact with the ground. The rotary joint 702 is rotatably connected to a pin shaft 10, and the pin shaft 10 is fixed on a connecting seat 9. The connecting seat 9 is fixedly connected to the spring upper limit plate 12 by bolts.

[0039] A nozzle pipe 17 is provided in the middle of the height adjustment limit mechanism. A nozzle 18 is installed at the lower end of the nozzle pipe 17. A universal wheel 19 is provided at the bottom of the front end of the height adjustment limit mechanism. The universal wheel 19 rolls on the ground. The height adjustment limit mechanism adjusts the relative position of the universal wheel 19 and the nozzle 18. The height adjustment limit mechanism includes a spring upper limit plate 12, a guide rod 15, a height adjustment plate 16, a shock-absorbing spring 14, and an adjustment drive structure for adjusting the relative height of the nozzle 18 and the universal wheel 19. The guide rod 15 includes a first guide rod 1501 and a second guide rod 1502. The upper end of the first guide rod 1501 is fixedly connected to one end of the spring upper limit plate 12, and the lower end passes through and is slidably connected to the height adjustment plate 16. The upper end of the second guide rod 1502 passes through and is slidably connected to one end of the spring upper limit plate 12, and the lower end is fixedly connected to one end of the height adjustment plate 16. The middle of the height adjustment plate 16 is slidably connected to the nozzle pipe 17. The nozzle pipe 17 passes through the height adjustment plate 16. The nozzle 18 is located below the height adjustment plate 16. A shock-absorbing spring 14 is sleeved outside the nozzle pipe 17. The upper end of the shock-absorbing spring 14 contacts the spring upper limit plate 12, and the lower end contacts the height adjustment plate 16. The shock-absorbing spring 14 is in a compressed state and is a compressed spring. It is limited by the spring upper limit plate 12 and the height adjustment plate 16, and a feedback effect is applied to the nozzle 18 during obstacle avoidance to protect the nozzle 18. The upper end of the nozzle pipe 17 passes through the spring upper limit plate 12 and is fixedly connected to the spring upper limit plate 12. The end of the nozzle pipe 17 passing through the spring upper limit plate 12 is connected to one end of a hose 2. The adjustment drive structure can adjust the distance between the height adjustment plate 16 and the spring upper limit plate 12. The adjustment drive structure is installed at the lower end of the first guide rod 1501. The adjustment drive structure includes a threaded portion 25 and a drive nut 26. The threaded portion 25 is provided at the lower end of the first guide rod 1501, and the lower end of the threaded portion 25 passes through the height adjustment plate 16. The end of the threaded portion 25 passing through the height adjustment plate 16 is threadedly connected to the drive nut 26. The upper end of the drive nut 26 presses against and contacts the lower end surface of the height adjustment plate 16. When it is necessary to make the nozzle 18 closer to the ground, the drive nut 26 is rotated to raise the height adjustment plate 16. The height adjustment plate 16 drives the universal wheel 19 to move upward, and at the same time compresses the shock-absorbing spring 14. The upward movement of the height adjustment plate 16 makes the nozzle 18 approach the ground. When it is necessary to make the nozzle 18 away from the ground, the drive nut 26 is rotated in the reverse direction, so as to adapt to grasslands with different flatness and different densities.

[0040] The upper end of the nozzle pipe 17 is fixedly connected to one end of the hose 2. The other end of the hose 2 is connected to the manifold 1. Pressurized liquid is transmitted in the manifold 1. The manifold 1 is connected to the nozzle 18 through the hose 2 and the nozzle pipe 17, so that the pressurized liquid in the manifold 1 is transmitted to the nozzle 18 and sprayed out through the nozzle 18.

[0041] Example 2: As Figures 5-6As shown in the figure, the adjustment driving structure is installed outside the nozzle pipe 17. The adjustment driving structure includes a sleeve rod 21, a first gear 22, and a second gear 23. The sleeve rod 21 is sleeved on the nozzle pipe 17 and is rotatably connected to the nozzle pipe 17. The upper end of the sleeve rod 21 passes through the spring upper limit plate 12 and is rotatably connected to the spring upper limit plate 12. The lower end of the sleeve rod 21 is threadedly connected to the middle of the height adjustment plate 16. The upper end of the sleeve rod 21 is fixedly connected to the first gear 22. The first gear 22 meshes with the second gear 23. The second gear 23 is fixedly connected to the adjustment handle 24. The adjustment handle 24 is rotatably connected to the spring upper limit plate 12. The spring upper limit plate 12 and the nozzle pipe 17 are fixedly connected through the nozzle pipe bracket 11. The lower end of the shock absorption spring 14 is fixedly connected to the spring lower limit plate 13. The spring lower limit plate 13 is slidably connected to the nozzle pipe 17. When it is necessary to adjust the height of the nozzle 18, rotate the adjustment handle 24. The adjustment handle 24 drives the second gear 23 to rotate. The second gear 23 drives the first gear 22 to rotate. The first gear 22 drives the sleeve rod 21 to rotate. The rotation of the sleeve rod 21 causes the height adjustment plate 16 to rise or fall. The height adjustment plate 16 drives the second guide rod 1502 and the universal wheel 19 to move up or down, and at the same time drives the spring lower limit plate 13 to compress or loosen the shock absorption spring 14, so that the relative position of the height adjustment plate 16 and the nozzle 18 changes, so as to achieve the purpose of adjusting the height of the nozzle 18, so as to adapt to grasslands with different densities and different flatnesses.

[0042] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A profiling follow-up root-cutting device for jet-type restoration of grassland forage, comprising a shunt pipe (1) and a nozzle (18), characterized in that: It further includes a limit sleeve (5), a rotary connection frame (7), a clamping mechanism (20), a limit anti-rotation support mechanism, and a height adjustment limit mechanism; a number of limit sleeves (5) are sleeved and connected on the shunt pipe (1), a clamping mechanism (20) is arranged on the limit sleeve (5), the limit sleeve (5) is a telescopic structure, and the telescopic amount is adjusted and locked by the clamping mechanism (20); an external limit anti-rotation support mechanism is arranged between two adjacent limit sleeves (5), and after the ends of two adjacent limit sleeves (5) are aligned and spliced, they are fixed by the limit anti-rotation support mechanism; the limit anti-rotation support mechanism is sleeved and connected on the limit sleeve (5), one end of the limit anti-rotation support mechanism is connected to the rotary connection frame (7), the other end of the rotary connection frame (7) is hinged to the height adjustment limit mechanism, a spray head pipe (17) is arranged in the middle of the height adjustment limit mechanism, a spray head nozzle (18) is installed at the lower end of the spray head pipe (17), a universal wheel (19) is arranged at the bottom of the front end of the height adjustment limit mechanism, the universal wheel (19) rolls on the ground, and the height adjustment limit mechanism adjusts the relative position between the spray head nozzle (18) and the ground; the upper end of the spray head pipe (17) is fixedly connected to one end of a hose (2), the other end of the hose (2) is communicated with the shunt pipe (1), pressure liquid is transmitted in the shunt pipe (1), the shunt pipe (1) is communicated with the spray head nozzle (18) through the hose (2) and the spray head pipe (17), so that the pressure liquid in the shunt pipe (1) is transmitted to the spray head nozzle (18) and sprayed out through the spray head nozzle (18); the limit anti-rotation support mechanism includes two limit support rings (3), and the two limit support rings (3) are respectively fixed on two adjacent limit sleeves (5); the height adjustment limit mechanism includes a spring upper limit plate (12), a guide rod (15), a height adjustment plate (16), a shock-absorbing spring (14), and an adjustment driving structure for adjusting the relative height between the spray head nozzle (18) and the universal wheel (19); the guide rod (15) includes a first guide rod (1501) and a second guide rod (1502), the upper end of the first guide rod (1501) is fixedly connected to one end of the spring upper limit plate (12), and the lower end passes through and is slidably connected to the height adjustment plate (16);The upper end of the second guide rod (1502) passes through and is slidably connected to one end of the upper spring limit plate (12), and the lower end is fixedly connected to one end of the height adjustment plate (16). The middle part of the height adjustment plate (16) is slidably connected to the spray head pipe (17). The spray head pipe (17) passes through the height adjustment plate (16), and the spray head nozzle (18) is located below the height adjustment plate (16). A shock-absorbing spring (14) is sleeved outside the spray head pipe (17). The upper end of the shock-absorbing spring (14) contacts the upper spring limit plate (12), and the lower end contacts the height adjustment plate (16). The shock-absorbing spring (14) is in a compressed state. The upper end of the spray head pipe (17) passes through the upper spring limit plate (12) and is fixedly connected to the upper spring limit plate (12). The end of the spray head pipe (17) passing through the upper spring limit plate (12) is connected to one end of the hose (2). The adjustment drive structure can adjust the distance between the height adjustment plate (16) and the upper spring limit plate (12).; 2. The profiling follow-up root cutting device for jet-type grassland forage restoration according to claim 1, characterized in that: The limiting sleeve (5) includes an outer sleeve (51) and an inner sleeve (52). One end of the outer sleeve (51) is provided with a fixed end (53), and the fixed end (53) is connected to the shunt pipe (1) by an interference fit. One end of the outer sleeve (51) away from the fixed end (53) is slidably sleeved with the inner sleeve (52), and the inner sleeve (52) is slidably connected to the shunt pipe (1); a ratchet bayonet (521) is arranged on the outer end face of the inner sleeve (52). The clamping mechanism (20) includes a first claw (2001) and a second claw (2004). One end of the first claw (2001) passes through the first slot (2008) and is clamped with the ratchet bayonet (521) on the inner sleeve (52). The other end of the first claw (2001) is hinged to one end of a hinge rod (2002). The middle of the hinge rod (2002) is hinged to one end of a first support (2003), and the other end of the first support (2003) is fixed on the outer sleeve (51). One end of the second claw (2004) passes through the second slot (2007) and is clamped with the ratchet bayonet (521) on the inner sleeve (52). The middle of the second claw (2004) is hinged to one end of a second support (2005), and the other end of the second support (2005) is fixed on the outer sleeve (51). The other end of the second claw (2004) is closely attached to one end of a spring piece (2006), and the other end of the spring piece (2006) is fixed on the outer sleeve (51). The second slot (2007) and the first slot (2008) are arranged on the outer sleeve (51).

3. The profiling and follow-up root cutting device for jet-type grassland forage restoration according to claim 1, characterized in that: Two limiting rods (4) distributed circularly are arranged between the two limiting support rings (3), and both ends of the limiting rods (4) are fixedly connected to the limiting support rings (3) on both sides by bolts.

4. The profiling follow-up root cutting device for jet-type grassland forage restoration according to claim 3, characterized in that: The rotary connection frame (7) includes a rotary joint (701), a rotary hinge joint (702) and a connecting rod (703). A rotary joint (701) is arranged between two limiting support rings (3) fixedly connected by limiting rods (4). The rotary joint (701) is rotatably connected to the limiting sleeve (5). One end of the connecting rod (703) is fixedly connected to the rotary joint (701), and the other end of the connecting rod (703) is fixedly connected with a rotary hinge joint (702). The rotary hinge joint (702) is hinged to the upper end on the side away from the universal wheel (19) of the height adjustment limiting mechanism. One end of a set screw spring (8) is fixedly connected to the end of the connecting rod (703) close to the rotary hinge joint (702), and the other end of the set screw spring (8) is fixed on the limiting rod (4).

5. The profiling follow-up root cutting device for jet-type grassland forage restoration according to claim 4, characterized in that: The rotary hinge joint (702) is rotatably connected to a pin shaft (10), and the pin shaft (10) is fixed on a connecting seat (9). The connecting seat (9) is fixedly connected to the spring upper limit plate (12) by bolts.

6. The profiling and follow-up root cutting device for jet-type grassland forage restoration according to claim 3, characterized in that: A plurality of uniformly arranged tip devices (6) are arranged inside each limiting support ring (3). The tip devices (6) pass through the limiting sleeve (5) and are tightly fixed to the shunt pipe (1) inside the limiting sleeve (5).

7. The profiling follow-up root-cutting device for jet-type grassland forage restoration according to claim 1, characterized in that: The adjustment driving structure is installed at the lower end of the first guide rod (1501). The adjustment driving structure includes a threaded portion (25) and a driving nut (26). The threaded portion (25) is arranged at the lower end of the first guide rod (1501), and the lower end of the threaded portion (25) passes through the height adjustment plate (16). The end of the threaded portion (25) passing through the height adjustment plate (16) is threadedly connected to the driving nut (26), and the upper end of the driving nut (26) presses against and contacts the lower end surface of the height adjustment plate (16).

8. The profiling follow-up root cutting device for jet-type grassland forage restoration according to claim 1, characterized in that: The adjustment driving structure is installed outside the spray head pipe (17). The adjustment driving structure includes a sleeve rod (21), a first gear (22), and a second gear (23). The sleeve rod (21) is sleeved on the spray head pipe (17) and is rotatably connected to the spray head pipe (17). The upper end of the sleeve rod (21) passes through the upper spring limit plate (12) and is rotatably connected to the upper spring limit plate (12). The lower end of the sleeve rod (21) is threadedly connected to the middle of the height adjustment plate (16). The upper end of the sleeve rod (21) is fixedly connected to the first gear (22). The first gear (22) meshes with the second gear (23). The second gear (23) is fixedly connected to the adjustment handle (24). The adjustment handle (24) is rotatably connected to the upper spring limit plate (12). The upper spring limit plate (12) and the spray head pipe (17) are fixedly connected through the spray head pipe bracket (11).

9. The profiling follow-up root cutting device for jet-type grassland forage restoration according to claim 1, characterized in that: The lower end of the shock absorption spring (14) is fixedly connected to the lower spring limit plate (13). The lower spring limit plate (13) is slidably connected to the spray head pipe (17).

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