A mobile fertilizer applicator

Abstract

The utility model discloses a mobile fertilizer distributor, including the movable frame, and the movable frame one side is equipped with the fixed cover, and the fixed cover one side is equipped with the handle with the sliding, and the fixed cover outside is equipped with the adjusting cover with the rotation, and the fixed cover outside is equipped with the limit cover with the sleeve, and the fixed cover outside is equipped with the displacement cover with the sliding sleeve, and the fixed cover outer wall is equipped with a plurality of limit grooves, and the displacement cover inboard is equipped with a plurality of adjustment grooves with the inclination, and the limit cover one side is equipped with the operating rod, and the adjusting cover one side is equipped with the limit seat, and the limit seat in the sliding is equipped with the limit rod, and the limit rod one end is equipped with the limit board, and the limit rod outside movable sleeve is equipped with the limit spring, and the adjustment groove in the sliding is equipped with the adjusting block, and the adjusting block one side is equipped with the transmission block, and the transmission block other end is equipped with the clamping block, and the clamping block other side is equipped with a plurality of return springs, and the return spring other end is equipped with the clamping plate, and the fixed cover outside is equipped with the operating board with the rotation, and the operating board is equipped with the operation hole, and the utility model discloses has realized the flexible adjustment to the handle height of stretching out, and has guaranteed the structural stability after the handle height of stretching out.

Description

Technical Field

[0001] This utility model relates to the field of mobile fertilizer applicator technology, and more specifically, to a mobile fertilizer applicator. Background Technology

[0002] In existing technologies, mobile fertilizer applicators are commonly used field operation equipment in agricultural production, mainly used for applying fertilizer to farmland or orchards. Hand-push mobile fertilizer applicators are widely used in small farms and home gardening due to their simple structure, flexible operation, and low cost. These devices are usually equipped with handles for operators to push and control the direction of travel. The height of the handle directly affects the operator's comfort and work efficiency. However, in existing technologies, the handles of hand-push mobile fertilizer applicators are usually designed with a fixed structure. The extension height of the handle is determined at the factory and cannot be flexibly adjusted according to the height differences of different operators, the slope of the working terrain, or the specific posture requirements of the fertilization operation. This fixed handle structure means that taller operators need to bend over to push, while shorter operators need to raise their arms to operate. Prolonged operation can easily cause fatigue in the waist or shoulders, reduce work efficiency, affect operating comfort, and may even lead to occupational injuries and other health problems.

[0003] To address the issue of the fixed and non-adjustable handle height, some equipment manufacturers have implemented segmented or stepless adjustment of the handle extension height through the cooperation of certain components. While these improvements have enhanced the equipment's adaptability to different usage needs to some extent, they generally suffer from problems such as overly simplistic adjustment structure design and insufficient locking strength. In actual use, when the fertilizer applicator is pushed on uneven ground, it will generate continuous vibration and bumps. Or, when it is subjected to external forces such as lateral thrust and torsional torque during turning, obstacle avoidance, or other operations, these simple adjustment structures are prone to displacement, loosening, or even failure. This can lead to changes in the adjusted handle height, affecting not only operational stability and work quality but also potentially causing the operator to lose balance due to a sudden slip or wobbling of the handle, resulting in accidents such as the fertilizer applicator tipping over or the operator falling. Utility Model Content

[0004] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides a mobile fertilizer applicator to solve the technical problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a mobile fertilizer applicator, comprising a mobile frame, a fixed sleeve fixedly mounted on one side of the mobile frame, a handle slidably mounted on one side of the fixed sleeve, an adjusting sleeve rotatably mounted on the outer side of the fixed sleeve, a limiting sleeve mounted on the outer side of the fixed sleeve, and a displacement sleeve slidably mounted on the outer side of the fixed sleeve. The outer wall of the displacement sleeve and the inner wall of the adjusting sleeve are movably connected by threads. Multiple limiting grooves are formed on the outer wall of the fixed sleeve, and multiple adjusting grooves are formed obliquely on the inner side of the displacement sleeve. An operating rod is fixedly connected to one side of the limiting sleeve, and a limiting seat is fixedly mounted on one side of the adjusting sleeve. A limiting rod is slidably mounted in the limiting seat. A limiting rod has a limiting plate connected to one end, and the other end of the limiting rod inserted into a limiting groove. A limiting spring is movably sleeved on the outside of the limiting rod, and both ends of the limiting spring are connected to the limiting plate and the limiting seat, respectively. An adjusting block is slidably provided in the adjusting groove. A transmission block is connected to one side of the adjusting block, and a clamping block is connected to the other end of the transmission block. Multiple return springs are connected to the other side of the clamping block, and a clamping plate is connected to the other end of the return spring. An operating plate is rotatably provided on the outside of the fixed sleeve. An operating hole is provided on the operating plate. Multiple guide rods are fixedly connected to one side of the clamping plate, and multiple guide holes are provided in the clamping block. The guide rods slide through the guide holes.

[0006] The present invention is further configured such that: a feeding bin is fixedly provided at the top of the movable frame; movable wheels are rotatably provided on both sides of the movable frame; a movable shaft is rotatably provided in the movable frame; both ends of the movable shaft are detachably connected to the movable wheels; a transmission shaft is rotatably provided in the movable frame; sprockets are detachably provided on the outer side of both the transmission shaft and one of the movable shafts; a chain is sleeved on the outer side of the sprockets; a fertilizer bin is detachably provided in the feeding bin; a spreading wheel is rotatably provided in the fertilizer bin; bevel gears are detachably provided on the lower side of the spreading wheel and one end of the transmission shaft; the two bevel gears mesh with each other; a sliding bin is connected to the bottom of the feeding bin; and the bottom of the sliding bin is connected to the top of the fertilizer bin.

[0007] The present invention is further configured such that the plurality of guide rods are parallel to the transmission block.

[0008] The present invention is further configured such that the displacement sleeve is symmetrically arranged in two places, and the threads on both sides of the inner wall of the adjusting sleeve are symmetrically arranged.

[0009] The present invention is further configured such that an operating spring is movably sleeved on the outside of the operating lever, one end of the operating spring is connected to the limiting sleeve, and the other end of the operating spring abuts against one side of the operating plate.

[0010] The present invention is further provided with multiple anti-slip strips fixedly provided on the outer side of both the adjusting sleeve and the limiting sleeve.

[0011] The present invention is further configured such that one end of the limiting rod and the edge of the inner wall of the limiting groove are both designed with rounded corners.

[0012] The present invention is further provided that a rubber strip is fixedly connected to one side of the clamping plate.

[0013] (III) Beneficial Effects Compared with the prior art, this utility model provides a mobile fertilizer applicator with the following beneficial effects: 1. By setting up an adjustment sleeve, a displacement sleeve, an adjustment groove, and a linkage mechanism between the clamping block and the clamping plate, the flexible and stepless adjustment function of the handle extension height is realized. The operator only needs to manually rotate the adjustment sleeve in sequence. Through the cooperation of the inner wall thread of the adjustment sleeve and the outer wall thread of the displacement sleeve, the two displacement sleeves slide relative to each other to change the distance. The adjustment block is guided to move by the inclined adjustment groove, which in turn drives the clamping block and the clamping plate to separate and release the clamping on the outer wall of the handle. At this time, the operator can freely adjust the extension height of the handle according to his own height, the slope of the working terrain, or the fertilization operation posture requirements. The adjustment process is continuous and smooth without segmentation restrictions, which can flexibly match different operating needs. This stepless adjustment design effectively avoids the problem of bending over or raising the arm caused by fixed handles, reduces the fatigue of the waist and shoulders of operators during long-term operation, improves the comfort and efficiency of operation, reduces the risk of occupational injury, and makes the equipment adaptable to various operators and diverse working environments.

[0014] 2. By constructing a multi-interlocking fixing mechanism consisting of a limiting sleeve, operating rod, operating hole, limiting rod, limiting groove, clamping plate, and rubber strip, a highly stable vibration-resistant and external force-resistant adjustment and holding system is established. In the locked state, the operating rod supports the limiting sleeve against the side wall of the operating plate, firmly restricting the outward movement of the limiting plate. Meanwhile, the limiting plate, through a limiting spring, maintains an inward preload, pulling the limiting rod into the limiting groove. The limiting rod, limiting groove, and limiting seat cooperate to form a rotational constraint on the adjusting sleeve. This interlocking mechanical design ensures that each fixed component mutually restricts the others, while simultaneously controlling the position of the adjusting block within the adjusting groove. Once fixed, the clamping block and clamping plate generate a continuous clamping force through the compression return spring. Combined with the high friction coefficient of the rubber strip, it firmly clamps the outer wall of the handle. Even if the fertilizer applicator is pushed on uneven ground and experiences continuous vibration and bumps, or is subjected to external forces such as lateral thrust and torsional torque during operations such as turning and obstacle avoidance, the fixing structure will not shift, loosen, or fail to adjust. This ensures that the adjusted handle height remains stable, fundamentally eliminating the safety hazard of the operator losing balance due to sudden slippage or shaking of the handle, which could lead to the fertilizer applicator tipping over or the operator falling. This effectively guarantees operational stability and safety. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall structure of a mobile fertilizer applicator according to the present invention; Figure 2 This is a schematic diagram of the structure of this utility model after removing the feeding bin, fertilizer bin, and handle. Figure 3 This is a structural schematic diagram of the fixed sleeve, operating plate, limiting sleeve and adjusting sleeve in this utility model; Figure 4 This is a cross-sectional view of the fixed sleeve, operating plate, limiting sleeve and adjusting sleeve in this utility model; Figure 5 This is a schematic diagram of the dispersed structure of the fixed sleeve, operating plate, limiting sleeve and adjusting sleeve in this utility model.

[0016] In the diagram: 1. Moving frame; 2. Fixed sleeve; 3. Handle; 4. Adjusting sleeve; 5. Limiting sleeve; 6. Displacement sleeve; 7. Limiting groove; 8. Adjusting groove; 9. Operating lever; 10. Limiting seat; 11. Limiting rod; 12. Limiting plate; 13. Limiting spring; 14. Adjusting block; 15. Transmission block; 16. Clamping block; 17. Reset spring; 18. Clamping plate; 19. Operating plate; 20. Operating hole; 21. Guide rod; 22. Guide hole; 23. Discharge bin; 24. Moving wheel; 25. Moving shaft; 26. Transmission shaft; 27. Sprocket; 28. Chain; 29. ​​Fertilizer bin; 30. Spreading wheel; 31. Bevel gear; 32. Sliding bin; 33. Operating spring; 34. Anti-slip strip; 35. Rubber strip. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0019] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0020] Please see Figures 1-5A mobile fertilizer applicator includes a mobile frame 1. A fixed sleeve 2 is fixedly mounted on one side of the mobile frame 1. A handle 3 is slidably mounted on one side of the fixed sleeve 2. An adjusting sleeve 4 is rotatably mounted on the outer side of the fixed sleeve 2. A limiting sleeve 5 is fitted on the outer side of the fixed sleeve 2. A displacement sleeve 6 is slidably mounted on the outer side of the fixed sleeve 2. The outer wall of the displacement sleeve 6 is movably connected to the inner wall of the adjusting sleeve 4 by threads. Multiple limiting grooves 7 are formed on the outer wall of the fixed sleeve 2. Multiple adjusting grooves 8 are inclinedly formed on the inner side of the displacement sleeve 6. An operating rod 9 is fixedly connected to one side of the limiting sleeve 5. A limiting seat 10 is fixedly mounted on one side of the adjusting sleeve 4. A limiting rod 11 is slidably mounted in the limiting seat 10. A limiting plate 12 is connected to one end of the limiting rod 11. The other end of the limiting rod 11... The end is inserted into the limiting groove 7. A limiting spring 13 is movably sleeved on the outside of the limiting rod 11. The two ends of the limiting spring 13 are connected to the limiting plate 12 and the limiting seat 10, respectively. An adjusting block 14 is slidably provided in the adjusting groove 8. A transmission block 15 is connected to one side of the adjusting block 14. A clamping block 16 is connected to the other end of the transmission block 15. Multiple return springs 17 are connected to the other side of the clamping block 16. A clamping plate 18 is connected to the other end of the return spring 17. An operating plate 19 is rotatably provided on the outside of the fixed sleeve 2. An operating hole 20 is opened on the operating plate 19. Multiple guide rods 21 are fixedly connected to one side of the clamping plate 18. Multiple guide holes 22 are opened in the clamping block 16. The guide rods 21 slide through the guide holes 22.

[0021] The top of the mobile frame 1 is fixedly equipped with a feeding bin 23. The two sides of the mobile frame 1 are equipped with rotating wheels 24. The mobile frame 1 is equipped with a rotating shaft 25. The two ends of the rotating shaft 25 are detachably connected to the rotating wheels 24. The mobile frame 1 is equipped with a rotating drive shaft 26. The drive shaft 26 and one of the rotating shafts 25 are detachably equipped with sprockets 27. The sprockets 27 are fitted with chains 28. The feeding bin 23 is detachably equipped with a fertilizer bin 29. The fertilizer bin 29 is equipped with a rotating spreading wheel 30. The spreading wheel 30 and one end of the drive shaft 26 are detachably equipped with bevel gears 31. The two bevel gears 31 mesh with each other. The bottom of the feeding bin 23 is connected to a sliding bin 32. The bottom of the sliding bin 32 is connected to the top of the fertilizer bin 29.

[0022] In this embodiment, when the device is needed, waste material is added to the feeding hopper 23, and then the handle 3 is pushed, causing the moving frame 1 to move via the moving wheels 24 on both sides. The moving wheels 24 drive the moving shaft 25 to rotate, and then the sprocket 27 on the outer side of the corresponding moving shaft 25 drives the chain 28 on the outer side to rotate, causing the chain 28 to drive the sprocket 27 on the outer side of the transmission shaft 26 to rotate, thereby causing the transmission shaft 26 to rotate. Then the transmission shaft 26 drives the bevel gear 31 installed at one end to rotate, causing the bevel gear 31 connected to the bottom end of the spreading wheel 30 to rotate, thereby allowing the waste material to pass through the feeding hopper 23. Fertilizer falling from hopper 32 into fertilizer bin 29 is spread out by the rotation of spreading wheel 30, thus achieving fertilization. When it is necessary to adjust the extension height of handle 3, first rotate operating plate 19 clockwise, so that operating plate 19 drives operating hole 20 to rotate clockwise to a position concentric with operating rod 9. Then push limiting sleeve 5, so that limiting sleeve 5 drives one side of operating rod 9 to gradually slide into operating hole 20. The limiting sleeve 5 and operating plate 19 will cooperate to squeeze operating spring 33, so that the inner wall of limiting sleeve 5 gradually no longer limits the outer wall of limiting plate 12. Then rotate adjusting sleeve 4 clockwise, so that adjusting sleeve 4 drives one side of limiting seat 10 clockwise. Rotation causes the limiting seat 10 to drive the limiting rod 11, limiting plate 12, and limiting spring 13 to rotate in the forward direction. The inner wall of the limiting groove 7 then presses against one end of the limiting rod 11. Due to the rounded corner design at the edge of the limiting rod 11 and the inner wall of the limiting groove 7, one end of the limiting rod 11 gradually slides out of the limiting groove 7. The other end of the limiting rod 11 drives the limiting plate 12 to slide outward, causing the limiting plate 12 to stretch the limiting spring 13 outward. Simultaneously, due to the threaded fit between the inner wall of the adjusting sleeve 4 and the outer wall of the displacement sleeve 6, and the symmetrical arrangement of the threads on both sides of the inner wall of the adjusting sleeve 4, the two displacement sleeves 6 slide separately, causing the two displacement sleeves 6... As the distance between them increases, the displacement sleeve 6 will cause the inner inclined adjustment groove 8 to slide, thereby causing the adjustment block 14 to move in the adjustment groove 8. Then, the adjustment block 14 will drive the clamping block 16 to slide outward through the transmission block 15, thereby increasing the distance between the clamping block 16 and the clamping plate 18. The clamping block 16 will also drive the guide hole 22 to slide along the guide rod 21. At the same time, the return spring 17 will gradually return to its original position. When the return spring 17 is fully returned to its original position, the clamping block 16 will drive the clamping plate 18 to slide outward through the return spring 17, so that the inner wall of the clamping plate 18 will no longer clamp the outer wall of the handle 3. Then, the handle 3 will be moved, thereby changing the extension height of the handle 3.

[0023] Please see Figures 3-5 As a further implementation of the overall equipment: multiple guide rods 21 are parallel to the transmission block 15. The displacement sleeve 6 is symmetrically arranged in two places, and the threads on both sides of the inner wall of the adjusting sleeve 4 are symmetrically arranged.

[0024] An operating spring 33 is movably sleeved on the outside of the operating lever 9. One end of the operating spring 33 is connected to the limiting sleeve 5, and the other end of the operating spring 33 abuts against one side of the operating plate 19.

[0025] Multiple anti-slip strips 34 are fixedly provided on the outer sides of both the adjusting sleeve 4 and the limiting sleeve 5.

[0026] Both the end of the limiting rod 11 and the edge of the inner wall of the limiting groove 7 adopt a rounded corner structure design.

[0027] A rubber strip 35 is fixedly connected to one side of the clamping plate 18.

[0028] More specifically, after the handle 3 is extended to the appropriate height, the adjusting sleeve 4 is rotated in the opposite direction. This causes the adjusting sleeve 4 to drive the limiting rod 11, the limiting plate 12, and the limiting spring 13 to rotate and reset in the opposite direction via the limiting seat 10. Simultaneously, the symmetrical threaded engagement on both sides of the inner wall of the adjusting sleeve 4 causes the two displacement sleeves 6 to slide and reset in the opposite direction, thereby reducing the distance between the two displacement sleeves 6. The displacement sleeves 6 will also drive the inner adjusting groove 8 to slide and reset. Then, the adjusting block 14 moves in the opposite direction in the adjusting groove 8, causing the adjusting block 14 to drive the clamping block 16 to converge inward via the transmission block 15. The clamping block 16, via the return spring 17, causes the clamping plate 18 to converge inwards. Simultaneously, the guide hole 22 and guide rod 21 also converge inwards. Once the inner wall of the clamping plate 18 contacts the outer wall of the handle 3, the clamping block 16 continues to converge inwards, causing the clamping block 16 and clamping plate 18 to press against the return spring 17 sleeved on the outer side of the guide rod 21. The clamping block 16 also causes the guide hole 22 to slide along the guide rod 21, ultimately resulting in the clamping block 16 and clamping plate 18 pressing against the return spring 17. Furthermore, the clamping plate 18 presses multiple inner rubber strips 35 against the outer wall of the handle 3, thus achieving the desired grip on the handle. 3 is fixed. Simultaneously, the adjusting sleeve 4, through the limiting seat 10, drives the limiting rod 11 to reverse and reset to the position corresponding to the original limiting groove 7. Then, the limiting spring 13 resets and pulls the limiting plate 12, causing the limiting plate 12 to drive the limiting rod 11 to slide inwards and reset, so that one end of the limiting rod 11 is reinserted into the original limiting groove 7. Then, the limiting sleeve 5 is released, and the operating spring 33 resets and pushes the limiting sleeve 5, causing the limiting sleeve 5 to drive one side of the operating rod 9 to slide in the opposite direction and reset. When the operating spring 33 is fully reset, the operating rod 9 completely moves back to the side of the operating plate 19, and the operating rod 9 does not... Then insert it into the operating hole 20, and then rotate the operating plate 19 in the opposite direction, so that the operating plate 19 drives the operating hole 20 to reverse and reset to a position that does not correspond to the operating rod 9. Then the operating rod 9 supports the limiting sleeve 5 to one side of the operating plate 19, so that the limiting sleeve 5 cannot slide easily. Then the inner wall of the limiting sleeve 5 re-limits the outer wall of the limiting plate 12, so that the limiting plate 12 and the limiting rod 11 cannot move outward. Then the limiting rod 11, the limiting groove 7 and the limiting seat 10 cooperate to limit the adjusting sleeve 4, so that the adjusting sleeve 4 cannot rotate accidentally, ensuring the structural stability of the handle 3 after length adjustment.

[0029] In summary, during the use or operation of the overall equipment: When the equipment needs to be used, waste material is added to the feeding hopper 23, and then the handle 3 is pushed, causing the moving frame 1 to move via the moving wheels 24 on both sides. The moving wheels 24 drive the moving shaft 25 to rotate, and then the sprocket 27 on the outer side of the corresponding moving shaft 25 drives the chain 28 on the outer side to rotate, causing the chain 28 to drive the sprocket 27 on the outer side of the drive shaft 26 to rotate, thereby causing the drive shaft 26 to rotate. Then the drive shaft 26 drives the bevel gear 31 installed at one end to rotate, causing the bevel gear 31 connected to the bottom end of the spreading wheel 30 to rotate, thereby causing the material to flow from the bottom... Fertilizer falling from the feed bin 23 into the fertilizer bin 29 via the feed hopper 32 is spread out by the rotation of the spreading wheel 30, thus achieving fertilization. When it is necessary to adjust the extension height of the handle 3, first rotate the operating plate 19 clockwise, so that the operating plate 19 drives the operating hole 20 to rotate clockwise to a position concentric with the operating rod 9. Then push the limiting sleeve 5, so that the limiting sleeve 5 drives one side of the operating rod 9 to gradually slide into the operating hole 20. The limiting sleeve 5 and the operating plate 19 will cooperate to compress the operating spring 33, so that the inner wall of the limiting sleeve 5 gradually no longer limits the outer wall of the limiting plate 12. Then rotate the adjusting sleeve 4 clockwise, so that the adjusting sleeve 4 drives one side of the limiting seat 10. When the device rotates forward, the limiting seat 10 will drive the limiting rod 11, the limiting plate 12, and the limiting spring 13 to rotate forward. The inner wall of the limiting groove 7 then presses against one end of the limiting rod 11. Due to the rounded corner design at the edge of the limiting rod 11 and the inner wall of the limiting groove 7, one end of the limiting rod 11 will gradually slide out of the limiting groove 7. The other end of the limiting rod 11 will drive the limiting plate 12 to slide outward, causing the limiting plate 12 to stretch the limiting spring 13 outward. Simultaneously, due to the threaded fit between the inner wall of the adjusting sleeve 4 and the outer wall of the displacement sleeve 6, and the symmetrical arrangement of the threads on both sides of the inner wall of the adjusting sleeve 4, the two displacement sleeves 6 will slide separately, causing the two displacement sleeves to... As the distance between sleeves 6 increases, the displacement sleeve 6 will cause the inner inclined adjustment groove 8 to slide, thereby causing the adjustment block 14 to move in the adjustment groove 8. Then, the adjustment block 14 will drive the clamping block 16 to slide outward through the transmission block 15, thereby lengthening the distance between the clamping block 16 and the clamping plate 18. The clamping block 16 will also drive the guide hole 22 to slide along the guide rod 21. At the same time, the return spring 17 will gradually return to its original position. When the return spring 17 is fully returned to its original position, the clamping block 16 will drive the clamping plate 18 to slide outward through the return spring 17, so that the inner wall of the clamping plate 18 no longer clamps the outer wall of the handle 3. Then, the handle 3 will be moved, thereby changing the extension height of the handle 3.

[0030] After the handle 3 is extended to the appropriate height, rotate the adjusting sleeve 4 in the opposite direction. This causes the adjusting sleeve 4 to drive the limiting rod 11, the limiting plate 12, and the limiting spring 13 to rotate and reset in the opposite direction via the limiting seat 10. At the same time, the two displacement sleeves 6 are symmetrically arranged on both sides of the inner wall of the adjusting sleeve 4, causing them to slide and reset in the opposite direction. This reduces the distance between the two displacement sleeves 6, and the displacement sleeves 6 will drive the inner adjusting groove 8 to slide and reset. Then, the adjusting block 14 moves in the opposite direction in the adjusting groove 8, causing the adjusting block 14 to drive the clamping block 16 to converge inward via the transmission block 15. The clamping block 16, via the return spring 17, causes the clamping plate 18 to converge inwards. Simultaneously, the guide hole 22 and guide rod 21 also converge inwards. Once the inner wall of the clamping plate 18 contacts the outer wall of the handle 3, the clamping block 16 continues to converge inwards, causing the clamping block 16 and clamping plate 18 to work together to press the return spring 17, which is sleeved on the outer side of the guide rod 21. The clamping block 16 also causes the guide hole 22 to slide along the guide rod 21, ultimately resulting in the clamping block 16 and clamping plate 18 pressing the return spring 17 tightly. Furthermore, the clamping plate 18 presses multiple inner rubber strips 35 against the outer wall of the handle 3, thus achieving the desired grip on the handle 3. While the adjusting sleeve 4 is fixed, the limiting rod 11 is reversed and reset to the position corresponding to the original limiting groove 7 via the limiting seat 10. Then, the limiting spring 13 resets and pulls the limiting plate 12, causing the limiting plate 12 to slide the limiting rod 11 inwards and reset, so that one end of the limiting rod 11 is reinserted into the original limiting groove 7. Then, the limiting sleeve 5 is released, and the operating spring 33 resets and pushes the limiting sleeve 5, causing the limiting sleeve 5 to slide the operating rod 9 on one side in the opposite direction and reset. When the operating spring 33 is fully reset, the operating rod 9 moves completely back to the side of the operating plate 19, and the operating rod 9 no longer... Insert the lever into the operating hole 20, and then rotate the operating plate 19 in the opposite direction, so that the operating plate 19 drives the operating hole 20 to reverse and reset to a position that does not correspond to the operating rod 9. Then, the operating rod 9 supports the limiting sleeve 5 to one side of the operating plate 19, so that the limiting sleeve 5 cannot slide easily. Then, the inner wall of the limiting sleeve 5 re-limits the outer wall of the limiting plate 12, so that the limiting plate 12 and the limiting rod 11 cannot move outward. Then, the limiting rod 11, the limiting groove 7 and the limiting seat 10 cooperate to limit the adjusting sleeve 4, so that the adjusting sleeve 4 cannot rotate accidentally, ensuring the structural stability of the handle 3 after length adjustment.

[0031] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mobile fertilizer applicator, comprising a mobile frame (1), characterized in that: The movable frame (1) is provided with a fixed sleeve (2) on one side, and a handle (3) is slidably provided on one side of the fixed sleeve (2). An adjusting sleeve (4) is rotatably provided on the outside of the fixed sleeve (2). A limiting sleeve (5) is fitted on the outside of the fixed sleeve (2). A displacement sleeve (6) is slidably fitted on the outside of the fixed sleeve (2). The outer wall of the displacement sleeve (6) is movably connected to the inner wall of the adjusting sleeve (4) by threads. Multiple limiting grooves (7) are opened on the outer wall of the fixed sleeve (2). Multiple adjusting grooves (8) are opened obliquely on the inner side of the displacement sleeve (6). An operating rod (9) is provided on one side of the limiting sleeve (5). A limiting seat (10) is provided on one side of the adjusting sleeve (4). A limiting rod (11) is slidably provided in the limiting seat (10). One end of the limiting rod (11) is provided with a limiting plate (12), and a limiting spring (13) is movably sleeved on the outside of the limiting rod (11). An adjusting block (14) is slidably provided in the adjusting groove (8). A transmission block (15) is provided on one side of the adjusting block (14), and a clamping block (16) is provided at the other end of the transmission block (15). Multiple return springs (17) are provided on the other side of the clamping block (16), and a clamping plate (18) is provided at the other end of the return spring (17). An operating plate (19) is rotatably provided on the outside of the fixed sleeve (2). An operating hole (20) is provided on the operating plate (19). Multiple guide rods (21) are provided on one side of the clamping plate (18), and multiple guide holes (22) are provided in the clamping block (16).

2. A mobile fertilizer applicator according to claim 1, characterized in that: The top of the mobile frame (1) is fixedly provided with a feeding bin (23). The two sides of the mobile frame (1) are provided with rotating wheels (24). The mobile frame (1) is provided with a rotating shaft (25). The two ends of the rotating shaft (25) are respectively detachably connected to the rotating wheels (24). The mobile frame (1) is provided with a rotating drive shaft (26). The drive shaft (26) and one of the rotating shafts (25) are detachably provided with sprockets (27). The sprockets (27) are fitted with chains (28). The feeding bin (23) is detachably provided with a fertilizer bin (29). The fertilizer bin (29) is provided with a rotating spreading wheel (30). The spreading wheel (30) and one end of the drive shaft (26) are detachably provided with bevel gears (31). The two bevel gears (31) mesh with each other. The bottom of the feeding bin (23) is connected with a sliding bin (32). The bottom of the sliding bin (32) is connected to the top of the fertilizer bin (29).

3. A mobile fertilizer applicator according to any one of claims 1 or 2, characterized in that: The multiple guide rods (21) are parallel to the transmission block (15).

4. A mobile fertilizer applicator according to claim 3, characterized in that: The displacement sleeve (6) is symmetrically arranged in two places, and the threads on both sides of the inner wall of the adjustment sleeve (4) are symmetrically arranged.

5. A mobile fertilizer applicator according to claim 1, characterized in that: An operating spring (33) is movably sleeved on the outside of the operating lever (9). One end of the operating spring (33) is connected to the limiting sleeve (5), and the other end of the operating spring (33) abuts against one side of the operating plate (19).

6. A mobile fertilizer applicator according to claim 1, characterized in that: Multiple anti-slip strips (34) are fixedly provided on the outer sides of both the adjusting sleeve (4) and the limiting sleeve (5).

7. A mobile fertilizer applicator according to claim 5, characterized in that: Both the end of the limiting rod (11) and the edge of the inner wall of the limiting groove (7) are designed with rounded corners.

8. A mobile fertilizer applicator according to claim 4, characterized in that: A rubber strip (35) is fixedly connected to one side of the clamping plate (18).

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