Sapling seeding device for forestry sand prevention and control

Abstract

The utility model discloses a forestry sand prevention and control sapling seeding device which comprises a rack, a seeding device is installed on the rack, the seeding device comprises a seeding bin, a seeding wheel and a transmission shaft, the seeding wheel is installed in the seeding bin, the transmission shaft is arranged in the seeding bin, and a quick change device is arranged on the outer side of the seeding wheel. The quick change device comprises a clamping sleeve, a mounting plate, a clamping frame, a moving sleeve, a clamping rod, a linkage sleeve, a linkage block, a clamping groove, a guide groove, a control sleeve and a guide block, the linkage block is connected to one end of the clamping frame, the clamping groove is formed in the outer side of the clamping rod, the guide groove is spirally formed in the outer side of the linkage sleeve, the guide block is arranged on the inner side of the control sleeve, and a reinforcing mechanism is arranged on the outer side of the clamping sleeve. The reinforcing mechanism comprises a rotating plate, a matching sleeve, a rotating hole, a rotating groove, a clamping rod and a connecting rod, the rotating hole is formed in one end of the rotating groove, the rotating groove is formed in the rotating plate, and the clamping rod is connected to one side of the matching sleeve through the connecting rod.

Description

Technical Field

[0001] The utility model relates to the technical field of seedling sowing, and more specifically to a seedling sowing device for forestry sand prevention and control. Background Art

[0002] In the field of forestry sand prevention and control, seedling sowing is a key task that directly affects the efficiency and effectiveness of vegetation restoration. However, the current seedling sowing technology and equipment still have many problems that need to be solved. These problems not only affect the sowing efficiency and quality, but also increase the labor intensity of operators.

[0003] First of all, the traditional manual sowing method is still widely used in many areas. This method requires operators to manually sow the seedlings one by one to the predetermined location. The process is cumbersome, time-consuming and labor-intensive. In large-scale sand control projects, the inefficiency of this method is particularly prominent. Operators need to work for a long time in harsh desert or semi-desert environments, which not only puts a heavy physical burden on them, but also easily affects the uniformity and accuracy of sowing due to fatigue. In addition, the speed of manual sowing is difficult to meet the needs of large-scale management, which seriously restricts the progress of sand control and sand fixation work.

[0004] Secondly, in order to improve the sowing efficiency, some mechanized sowing equipment came into being. These equipment usually use seeding wheels to control the sowing gap, which can theoretically achieve more efficient and uniform sowing. However, this type of equipment has exposed new problems in actual use. The most prominent one is that the installation and disassembly process of the seeding wheel is complicated and cumbersome, and often requires professional tools and technicians to operate. This design makes the replacement of the seeding wheel a time-consuming and technically demanding task. In actual applications, different tree species and different soil conditions may require seeding wheels of different specifications. The complicated replacement process seriously affects the adaptability and work efficiency of the equipment. Operators cannot quickly adjust the sowing gap according to actual needs, which not only reduces the flexibility of sowing, but also may lead to problems such as seed waste or unreasonable sowing density.

[0005] In addition, although some improved equipment has solved the problem of quick replacement of seeding wheels to a certain extent, these designs often have the defects of simple structure and insufficient stability. Although they seem firm under static conditions, problems often arise in actual work. When the equipment is traveling on rugged sand, severe vibrations and bumps will cause these simple fixing mechanisms to loosen. The centrifugal force generated by the rotation of the seeding wheel further aggravates this problem. As a result, the seeding wheel may shift, loosen or even fall off during operation, which not only affects the seeding effect, but may also cause damage to the equipment. This instability not only reduces the accuracy and uniformity of seeding, but also increases the maintenance cost and downtime of the equipment, seriously affecting the progress and effectiveness of sand prevention and control work. Utility Model Content

[0006] In view of the problems existing in the prior art, the utility model provides a seedling sowing device for forestry sand prevention and control to solve the technical problems mentioned in the background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a seeding device for forestry sand control and prevention, comprising a frame, a seeding device installed on the frame, the seeding device comprising a seeding bin, a seeding wheel and a transmission shaft, the seeding wheel is installed in the seeding bin, the seeding bin is installed on the frame, the transmission shaft is rotatably arranged in the seeding bin, a quick-change device is arranged on the outer side of the seeding wheel, the quick-change device comprises a clamping sleeve, a mounting plate, a clamping frame, a movable sleeve, a clamping rod, a linkage sleeve, a linkage block, a clamping groove, a guide groove, a control sleeve and a guide block, the clamping sleeve is detachably sleeved on the outer side of the clamping rod, the mounting plate is fixedly connected to one end of the transmission shaft, the clamping frame One end is inserted into the slot, and the movable sleeve and the linkage sleeve are both sleeved on the outside of the locking sleeve, the linkage block is fixedly connected to one end of the bracket, the slot is opened on the outside of the locking rod, the guide groove is spirally opened on the outside of the linkage sleeve, the control sleeve is rotatably set on the outside of the locking sleeve, the guide block is fixedly set on the inside of the control sleeve, and a reinforcement mechanism is provided on the outside of the locking sleeve, the reinforcement mechanism includes a rotating plate, a matching sleeve, a rotating hole, a rotating groove, a locking rod and a connecting rod, the rotating plate is rotatably sleeved on the outside of the locking sleeve, the matching sleeve is slidably set on the outside of the locking sleeve, the rotating hole is opened at one end of the rotating groove, the rotating groove is opened on the rotating plate, and the locking rod is fixedly connected to one side of the matching sleeve through a connecting rod.

[0008] The utility model is further configured that a placing bin is fixedly provided on one side of the sowing bin, a lowering bin is detachably provided in the sowing bin, and a sowing pipe is connected to the lower side of the lowering bin.

[0009] The utility model is further configured that a moving wheel is rotatably provided inside the frame, one end of the moving wheel and one end of the transmission shaft are both connected with a sprocket, and a chain is sleeved outside the sprocket.

[0010] The utility model is further configured that a moving groove is provided on the outer side of the engaging sleeve, a moving block is slidably provided in the moving groove, and the moving sleeve is fixedly connected with the linkage sleeve through the moving block.

[0011] The utility model is further configured that a movable spring is provided inside the card frame, and the inner wall of the card frame is connected to the outer wall of the engaging sleeve through the movable spring, and the provision of the movable spring ensures stable resetting of the card frame.

[0012] The utility model is further configured such that a plurality of mating rods are slidably provided on the side wall of the control sleeve, a plurality of mating grooves are opened on the outer wall of the locking sleeve, rounded corner structures are designed at the ends of the mating rods and the edges of the inner walls of the mating grooves, and the inner ends of the mating rods are inserted into the mating grooves. The configuration of the mating rods and the mating grooves ensures precise locking of the control sleeve.

[0013] The utility model is further configured such that a conical spring is provided on the outer side of the control sleeve, and the outer end of the matching rod is connected to the outer wall of the control sleeve through the conical spring. The setting of the conical spring ensures the stable resetting of the matching rod.

[0014] The utility model is further configured such that a spring is connected to one side of the matching sleeve, and the other end of the spring is in contact connection with the rotating plate. The provision of the spring not only simplifies the operation process, but also provides a stable pre-tightening force.

[0015] Compared with the prior art, the utility model provides a seedling sowing device for forestry sand prevention and control, which has the following beneficial effects:

[0016] 1. The sowing device effectively solves the problem of low efficiency of traditional manual sowing through the clever coordination of the frame, sowing bin, sowing wheel and transmission shaft. The device adopts a sprocket and chain transmission mechanism, and drives the transmission shaft to operate through the rotation of the moving wheel, thereby driving the sowing wheel to work. In particular, the design of the feeding bin, the feeding bin and the sowing tube forms a complete seed conveying channel to ensure that the seeds can be evenly and orderly sown into the soil. This design not only realizes the mechanization and automation of the sowing process, greatly improves the sowing efficiency, but also reduces the labor intensity of the operator.

[0017] 2. The quick-change device solves the problem of cumbersome replacement of the seeding wheel through the coordinated work of the locking sleeve, mounting plate, clamping frame, movable sleeve, locking rod, linkage sleeve, linkage block, clamping slot, guide slot, control sleeve and guide block. The device adopts a spiral guide structure, and the guide block is driven to move in the guide slot by the rotation of the control sleeve to achieve precise control of the movable sleeve. In particular, the quick plug-in design of the clamping frame and the clamping slot, combined with the elastic support of the movable spring, makes the disassembly and assembly of the seeding wheel simple and quick. The guiding effect of the movable block and the movable slot ensures a smooth and controllable disassembly and assembly process, while the design of the matching rod and the matching slot provides a reliable positioning function. This design not only greatly simplifies the replacement process of the seeding wheel, but also improves the working efficiency, enabling the operator to quickly adjust the seeding gap according to different tree species and soil conditions.

[0018] 3. The reinforcement mechanism solves the problem of insufficient stability of the fixed structure of the seeding wheel through the precise coordination of the rotating plate, matching sleeve, rotating hole, rotating groove, clamping rod and connecting rod. The device adopts a rotation locking method, and the rotation of the rotating plate drives the rotating hole and the rotating groove to cooperate with the clamping rod to achieve reliable locking of the matching sleeve. In particular, the preload design of the spring ensures that the matching sleeve always remains stable. The ingenious coordination of the rotating plate and the matching sleeve, plus the supporting role of the clamping rod and the connecting rod, form a multiple locking mechanism, which effectively prevents the equipment from loosening under vibration and bumpy conditions. This design not only improves the stability of the fixed structure of the seeding wheel, but also ensures the continuity and reliability of the seeding process, greatly reducing the maintenance cost and downtime of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a seedling sowing device for forestry sand prevention and control in the utility model;

[0020] Figure 2 It is a cross-sectional structural schematic diagram of the sowing bin part in the utility model;

[0021] Figure 3 It is a cross-sectional structural schematic diagram of the seeding wheel part of the utility model;

[0022] Figure 4 It is a cross-sectional structural diagram of the quick-change device and the reinforcement mechanism in the utility model;

[0023] Figure 5 It is a schematic diagram of the dispersed structure of the control sleeve and the linkage sleeve in the utility model.

[0024] In the figure: 1. frame; 2. sowing bin; 3. sowing wheel; 4. transmission shaft; 5. snap-fit ​​sleeve; 6. mounting plate; 7. bracket; 8. movable sleeve; 9. snap-fit ​​rod; 10. linkage sleeve; 11. linkage block; 12. slot; 13. guide slot; 14. control sleeve; 15. guide block; 16. rotating plate; 17. matching sleeve; 18. rotating hole; 19. rotating slot; 20. clamping rod; 21. connecting rod; 22. placing bin; 23. unloading bin; 24. sowing tube; 25. moving wheel; 26. sprocket; 27. chain; 28. moving slot; 29. ​​moving block; 30. movable spring; 31. matching rod; 32. matching slot; 33. conical spring; 34. spring. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0027] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0028] See also Figure 1-Figure 5 A seedling sowing device for forestry sand control and prevention comprises a frame 1, a sowing device is installed on the frame 1, the sowing device comprises a sowing bin 2, a sowing wheel 3 and a transmission shaft 4, the sowing wheel 3 is installed in the sowing bin 2, the sowing bin 2 is installed on the frame 1, the transmission shaft 4 is rotatably arranged in the sowing bin 2, and a quick-changing device is arranged on the outside of the sowing wheel 3, the quick-changing device comprises a clamping sleeve 5, a mounting plate 6, a clamping frame 7, a movable sleeve 8, a clamping rod 9, a linkage sleeve 10, a linkage block 11, a clamping groove 12, a guide groove 13, a control sleeve 14 and a guide block 15, the clamping sleeve 5 is detachably sleeved on the outside of the clamping rod 9, the mounting plate 6 is fixedly connected to one end of the transmission shaft 4, one end of the clamping frame 7 is inserted into the clamping groove 12, the movable sleeve 8 and the linkage sleeve 10 are all sleeved on the outside of the locking sleeve 5, the linkage block 11 is fixedly connected to one end of the bracket 7, the slot 12 is opened on the outside of the locking rod 9, the guide slot 13 is spirally opened on the outside of the linkage sleeve 10, the control sleeve 14 is rotatably set on the outside of the locking sleeve 5, the guide block 15 is fixedly set on the inside of the control sleeve 14, and a reinforcement mechanism is provided on the outside of the locking sleeve 5. The reinforcement mechanism includes a rotating plate 16, a matching sleeve 17, a rotating hole 18, a rotating groove 19, a clamping rod 20 and a connecting rod 21. The rotating plate 16 is rotatably sleeved on the outside of the locking sleeve 5, the matching sleeve 17 is slidably set on the outside of the locking sleeve 5, the rotating hole 18 is opened at one end of the rotating groove 19, the rotating groove 19 is opened on the rotating plate 16, and the clamping rod 20 is fixedly connected to one side of the matching sleeve 17 through the connecting rod 21.

[0029] A loading bin 22 is fixedly provided at one side of the sowing bin 2, a lowering bin 23 is detachably provided in the sowing bin 2, and a sowing pipe 24 is connected to the lower part of the lowering bin 23.

[0030] A moving wheel 25 is rotatably provided inside the frame 1 , one end of the moving wheel 25 and one end of the transmission shaft 4 are both connected with a sprocket 26 , and a chain 27 is sleeved on the outer side of the sprocket 26 .

[0031] In this embodiment, when the device needs to be used, the seeds are placed in the placement bin 22, and then the seeds enter the sowing bin 2, and then the frame 1 is pushed, so that the frame 1 moves through the moving wheel 25, and then the moving wheel 25 drives the sprocket 26 connected at one end to rotate, and then the sprocket 26 here drives the sprocket 26 connected to one end of the transmission shaft 4 to rotate through the chain 27 sleeved on the outside, and then the transmission shaft 4 will drive the sowing wheel 3 to rotate through the mounting plate 6 and the locking rod 9 and other components, so that the sowing wheel 3 scoops up the seeds in the sowing bin 2, and then sends them into the lower bin 23, and then the seeds enter the sowing tube 24 due to gravity, and finally enter the soil, thereby realizing the mechanized sowing of seedlings, simple operation, and improving sowing efficiency.

[0032] See also Figure 2-Figure 5 As a further implementation of the overall device: a moving groove 28 is opened on the outer side of the locking sleeve 5, a moving block 29 is slidably provided in the moving groove 28, and the moving sleeve 8 is fixedly connected to the linkage sleeve 10 through the moving block 29.

[0033] A movable spring 30 is provided on the inner side of the card frame 7 , and the inner wall of the card frame 7 is connected to the outer wall of the engaging sleeve 5 via the movable spring 30 .

[0034] A plurality of mating rods 31 are slidably provided on the side wall of the control sleeve 14 , and a plurality of mating grooves 32 are opened on the outer wall of the locking sleeve 5 . The ends of the mating rods 31 and the inner wall edges of the mating grooves 32 are both designed with rounded corners, and the inner ends of the mating rods 31 are inserted into the mating grooves 32 .

[0035] A conical spring 33 is provided on the outer side of the control sleeve 14 , and the outer end of the matching rod 31 is connected to the outer wall of the control sleeve 14 through the conical spring 33 .

[0036] A spring 34 is connected to one side of the matching sleeve 17 , and the other end of the spring 34 is in contact connection with the rotating plate 16 .

[0037] More specifically, when the seeding wheel 3 needs to be replaced or maintained, the rotating plate 16 is first rotated, and the rotating plate 16 drives the opened rotating hole 18 and the rotating groove 19 to rotate. When the rotating hole 18 moves to a position concentric with the clamping rod 20, the matching sleeve 17 is pushed, so that the matching sleeve 17 drives the clamping rod 20 to slide through the connecting rod 21, and the clamping rod 20 gradually penetrates into the rotating hole 18, and the matching sleeve 17 cooperates with the rotating plate 16 to squeeze the spring 34. When the spring 34 is squeezed to the limit, the clamping rod 20 completely passes through the rotating hole 18 and moves to the other side of the rotating plate 16, and then the rotating plate 16 is rotated in the opposite direction, and the rotating plate 16 drives the rotating hole 18 and the rotating groove 19 to rotate in the opposite direction, and then the connecting rod 21 enters the rotating groove 19, and then the connecting rod 21 and the clamping rod 20 cooperate to limit the matching sleeve 17 to the rotating hole 18. On one side of the plate 16, the matching sleeve 17 no longer limits the matching rod 31, and then the control sleeve 14 rotates forward, and the control sleeve 14 drives the multiple matching rods 31 slidingly arranged on the side wall to move, and then the inner wall of the matching groove 32 squeezes one end of the matching rod 31. Due to the rounded structure design at the edge of the inner wall of the matching groove 32 and the end of the matching rod 31, one end of the matching rod 31 slides out of the matching groove 32, and the other end of the matching rod 31 drives the conical spring 33 to stretch, and at the same time the control sleeve 14 drives the guide block 15 arranged on the inner side to rotate. Due to the spiral structure design of the guide groove 13, and the cooperation of the moving block 29 and the moving groove 28 forms a limit for the moving sleeve 8 and the linkage sleeve 10, so that the linkage sleeve 10 will not rotate, and then the linkage sleeve 10 will drive the moving sleeve 8 through the moving block 29 8 slides along the moving groove 28, and then the outer side of the moving sleeve 8 will push the linkage block 11 outward, so that the inner wall of the moving sleeve 8 no longer limits the outer side of the bracket 7, and the linkage block 11 drives the bracket 7 to move outward, and then one end of the bracket 7 will gradually slide out of the slot 12, and the bracket 7 will drive the active spring 30 to stretch, and then the locking sleeve 5 and the locking rod 9 are pulled out to both sides respectively, and then the seeding wheel 3 is taken out from between the mounting plates 6 on both sides, and the seeding wheel 3 is replaced and installed between the two mounting plates 6, and the mounting holes opened on the mounting plates 6 are concentric with the mounting holes of the seeding wheel 3, and then the locking rod 9 is passed through one side of one of the mounting plates 6, and then the locking sleeve 5 is sleeved on the outer side of the locking rod 9 from the other side of the mounting plate 6, and then the control sleeve 14 is rotated in the opposite direction. Through the cooperation of the guide block 15 and the guide groove 13, the linkage sleeve 10 drives the movable sleeve 8 to slide and reset through the moving block 29, and then the outer side of the linkage sleeve 10 gradually stops limiting the linkage block 11, and then the movable spring 30 drives the bracket 7 to gradually reset, and the inner wall of the movable sleeve 8 gradually limits the bracket 7, and then one end of the bracket 7 will be reinserted into the bracket groove 12. When the bracket 7 is completely inserted back into the bracket groove 12, the conical spring 33 drives the matching rod 31 to slide and reset and insert it into the original matching groove 32, and then the rotating plate 16 is rotated forward again, so that the rotating plate 16 drives the rotating hole 18 and the rotating groove 19 to move. When the rotating hole 18 moves to a position concentric with the card rod 20 again, the spring 34 pushes the matching sleeve 17 to slide and reset, and then the matching sleeve 17 drives the connecting rod 21 and the card rod 20 to slide and reset.When the spring 34 is completely reset, the rotating plate 16 continues to rotate, so that the rotating plate 16 drives the rotating hole 18 and the rotating groove 19 to rotate to a position that does not correspond to the clamping rod 20 and the connecting rod 21. At this time, the clamping rod 20 cooperates with the connecting rod 21 to support the matching sleeve 17, and the pre-tightening force applied by the upper spring 34 makes the matching sleeve 17 not move easily. Then the inner wall of the matching sleeve 17 limits the outer side of the matching rod 31, so that the matching rod 31 and the matching groove 32 cooperate to lock the control sleeve 14, ensuring the stability of the installation structure.

[0038] In summary, when the overall equipment is in use or running: when the equipment needs to be used, the seeds are placed in the placement bin 22, and then the seeds will enter the sowing bin 2, and then the frame 1 is pushed, so that the frame 1 moves through the moving wheel 25, and then the moving wheel 25 drives the sprocket 26 connected at one end to rotate, and then the sprocket 26 here drives the sprocket 26 connected to one end of the transmission shaft 4 to rotate through the chain 27 sleeved on the outside, and then the transmission shaft 4 will drive the sowing wheel 3 to rotate through the mounting plate 6 and the locking rod 9 and other components, so that the sowing wheel 3 will scoop up the seeds in the sowing bin 2, and then send them into the lower bin 23, and then the seeds enter the sowing tube 24 due to gravity, and finally enter the soil, thereby realizing the mechanized sowing of seedlings, simple operation, and improving sowing efficiency.

[0039] When the seeding wheel 3 needs to be replaced or maintained, the rotating plate 16 is first rotated, and the rotating plate 16 drives the rotating hole 18 and the rotating groove 19 to rotate. When the rotating hole 18 moves to a position concentric with the clamping rod 20, the matching sleeve 17 is pushed, so that the matching sleeve 17 drives the clamping rod 20 to slide through the connecting rod 21, and the clamping rod 20 gradually penetrates into the rotating hole 18, and the matching sleeve 17 cooperates with the rotating plate 16 to squeeze the spring 34. When the spring 34 is squeezed to the limit, the clamping rod 20 completely passes through the rotating hole 18 and moves to the other side of the rotating plate 16, and then the rotating plate 16 is rotated in the opposite direction, and the rotating plate 16 drives the rotating hole 18 and the rotating groove 19 to rotate in the opposite direction, and then the connecting rod 21 enters the rotating groove 19, and then the connecting rod 21 and the clamping rod 20 cooperate to limit the matching sleeve 17 to one side of the rotating plate 16 The locking cam 32 is engaged with the locking cam 33 and the locking cam 33 is engaged with the locking cam 33. The locking cam 32 is engaged with the locking cam 33 and the locking cam 33 is engaged with the locking cam 33. The locking cam 32 is engaged with the locking cam 33 and the locking cam 33 is engaged with the locking cam 33. The movable groove 28 slides, and then the outer side of the movable sleeve 8 will push the linkage block 11 outward, so that the inner wall of the movable sleeve 8 no longer limits the outer side of the bracket 7, and the linkage block 11 drives the bracket 7 to move outward, and then one end of the bracket 7 will gradually slide out of the slot 12, and the bracket 7 will drive the movable spring 30 to stretch, and then the engaging sleeve 5 and the engaging rod 9 are pulled out to both sides respectively, and then the seeding wheel 3 is taken out from between the mounting plates 6 on both sides, and the seeding wheel 3 is replaced and installed between the two mounting plates 6, and the mounting holes opened on the mounting plates 6 are concentric with the mounting holes of the seeding wheel 3, and then the engaging rod 9 is passed through one side of one of the mounting plates 6, and then the engaging sleeve 5 is sleeved on the outer side of the engaging rod 9 from the other side of the mounting plate 6, and then the control sleeve 14 is rotated in the opposite direction. The cooperation of the guide block 15 and the guide groove 13 enables the linkage sleeve 10 to slide and reset through the moving block 29, and then the outer side of the linkage sleeve 10 gradually stops limiting the linkage block 11, and then the movable spring 30 drives the bracket 7 to gradually reset, and the inner wall of the movable sleeve 8 gradually limits the bracket 7, and then one end of the bracket 7 will be reinserted into the bracket groove 12. When the bracket 7 is completely inserted back into the bracket groove 12, the conical spring 33 drives the matching rod 31 to slide and reset and insert it into the original matching groove 32, and then the rotating plate 16 is rotated forward again, so that the rotating plate 16 drives the rotating hole 18 and the rotating groove 19 to move. When the rotating hole 18 moves to a position concentric with the clamping rod 20 again, the spring 34 pushes the matching sleeve 17 to slide and reset, and then the matching sleeve 17 drives the connecting rod 21 and the clamping rod 20 to slide and reset.When the spring 34 is completely reset, the rotating plate 16 continues to rotate, so that the rotating plate 16 drives the rotating hole 18 and the rotating groove 19 to rotate to a position that does not correspond to the clamping rod 20 and the connecting rod 21. At this time, the clamping rod 20 cooperates with the connecting rod 21 to support the matching sleeve 17, and the pre-tightening force applied by the upper spring 34 makes the matching sleeve 17 not move easily. Then the inner wall of the matching sleeve 17 limits the outer side of the matching rod 31, so that the matching rod 31 and the matching groove 32 cooperate to lock the control sleeve 14, ensuring the stability of the installation structure.

[0040] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A seedling sowing device for forestry sand control and prevention, comprising a frame (1), characterized in that: A sowing device is mounted on the frame (1), the sowing device comprising a sowing bin (2), a sowing wheel (3) and a transmission shaft (4); the sowing wheel (3) is mounted in the sowing bin (2), the transmission shaft (4) is arranged in the sowing bin (2), a quick-change device is arranged outside the sowing wheel (3), the quick-change device comprising a locking sleeve (5), a mounting plate (6), a locking frame (7), a movable sleeve (8), a locking rod (9), a linkage sleeve (10), a linkage block (11), a locking groove (12), a guide groove (13), a control sleeve (14) and a guide block (15); the mounting plate (6) is connected to one end of the transmission shaft (4), the movable sleeve (8) and the linkage sleeve (10) are sleeved on the sowing bin (2), and the movable sleeve (8) and the linkage sleeve (10) are sleeved on the sowing bin (2). The engaging sleeve (5) is outside the engaging sleeve, the linkage block (11) is connected to one end of the engaging frame (7), the engaging groove (12) is arranged outside the engaging rod (9), the guide groove (13) is spirally arranged outside the linkage sleeve (10), the guide block (15) is arranged inside the control sleeve (14), and a reinforcement mechanism is arranged outside the engaging sleeve (5), the reinforcement mechanism comprises a rotating plate (16), a matching sleeve (17), a rotating hole (18), a rotating groove (19), a clamping rod (20) and a connecting rod (21), the rotating hole (18) is arranged at one end of the rotating groove (19), the rotating groove (19) is arranged on the rotating plate (16), and the clamping rod (20) is connected to one side of the matching sleeve (17) through the connecting rod (21).

2. A seedling sowing device for forestry sand prevention and control according to claim 1, characterized in that: A loading bin (22) is fixedly provided on one side of the sowing bin (2), a lowering bin (23) is detachably provided in the sowing bin (2), and a sowing pipe (24) is connected to the lower part of the lowering bin (23).

3. A seedling sowing device for forestry sand prevention and control according to claim 2, characterized in that: A moving wheel (25) is rotatably provided inside the frame (1), one end of the moving wheel (25) and one end of the transmission shaft (4) are both connected with a sprocket (26), and a chain (27) is sleeved on the outside of the sprocket (26).

4. A seedling sowing device for forestry sand prevention and control according to claim 3, characterized in that: A moving groove (28) is provided on the outer side of the locking sleeve (5), a moving block (29) is slidably provided in the moving groove (28), and the moving sleeve (8) is fixedly connected to the linkage sleeve (10) via the moving block (29).

5. A seedling sowing device for forestry sand prevention and control according to any one of claims 1 to 4, characterized in that: A movable spring (30) is provided on the inner side of the clamping frame (7), and the inner wall of the clamping frame (7) is connected to the outer wall of the clamping sleeve (5) via the movable spring (30).

6. The seedling sowing device for forestry sand prevention and control according to claim 1 is characterized by: A plurality of matching rods (31) are slidably provided on the side wall of the control sleeve (14), and a plurality of matching grooves (32) are provided on the outer wall of the locking sleeve (5). The ends of the matching rods (31) and the inner wall edges of the matching grooves (32) are both designed with rounded corners, and the inner ends of the matching rods (31) are inserted into the matching grooves (32).

7. A seedling sowing device for forestry sand prevention and control according to claim 6, characterized in that: A conical spring (33) is provided on the outside of the control sleeve (14), and the outer end of the matching rod (31) is connected to the outer wall of the control sleeve (14) via the conical spring (33).

8. A seedling sowing device for forestry sand prevention and control according to claim 7, characterized in that: A spring (34) is connected to one side of the matching sleeve (17), and the other end of the spring (34) is contact-connected to the rotating plate (16).

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