Plug seedling soil covering mechanism and transplanter based on same

Abstract

The invention discloses a plug seedling soil covering mechanism and a transplanter based on the same, and relates to the technical field of transplanters, the plug seedling soil covering mechanism comprises a fixed plate, both ends of the fixed plate are provided with supporting and covering assemblies, each supporting and covering assembly comprises a main force arm and an auxiliary force arm, and both the main force arm and the auxiliary force arm are rotatably arranged on the fixed plate and rotate in opposite directions; one main force arm and the other auxiliary force arm which are located at the two ends of the fixing plate correspondingly rotate synchronously. Soil covering pieces for covering soil are arranged at the bottom ends of the main force arm and the auxiliary force arm; a holding cover linked with the main force arm is arranged between the two corresponding soil covering claws, and is arranged on the fixed plate in a lifting manner; during transplanting, one main force arm is driven to rotate, and the two corresponding soil covering pieces are opened towards the two sides. According to the plug seedling soil covering mechanism and the transplanter based on the same, by arranging the main force arm, the auxiliary force arm, the supporting cover and other structures, efficient linkage of hole digging and soil covering is achieved, soil covering uniformity is guaranteed, operation and control are convenient and fast, and the use efficiency of the transplanter is improved.

Description

Technical Field

[0001] This invention relates to the field of transplanter technology, and in particular to a soil covering mechanism for plug seedlings and a transplanter based on the mechanism. Background Technology

[0002] Transplanters, also known as seedling tube transplanters, are agricultural machines used for transplanting crop seedlings. They are characterized by good adaptability and low cost, and are suitable for transplanting bare seedlings and potted seedlings of various crops such as corn, cotton, and sugar beets. They are also widely used in the cultivation of cash crops such as watermelon, pepper, and Chinese medicinal herbs.

[0003] In existing transplanting machines, digging holes and covering soil are mostly set up independently, lacking linkage control. This can easily lead to problems such as uneven soil covering and excessive deviation in soil covering thickness during operation, increasing usage costs and reducing the efficiency of the transplanting machine.

[0004] Therefore, it is necessary to propose a soil covering mechanism for plug seedlings and a transplanter based on this mechanism to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a soil covering mechanism for plug seedlings and a transplanter based on the mechanism, so as to solve the problems in the existing transplanters where digging holes and covering soil are mostly set independently, lacking linkage control, and easily causing uneven soil covering and excessive deviation in soil covering thickness during operation, which also increases the cost of use and reduces the efficiency of the transplanter.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a soil covering mechanism for seedlings in plug trays, comprising a fixed plate, wherein both ends of the fixed plate are provided with supporting components, the supporting components comprising a main arm and a secondary arm, both the main arm and the secondary arm being rotatably mounted on the fixed plate and rotating in opposite directions; One main arm and the other auxiliary arm, located at opposite ends of the fixed plate, rotate in the same direction. Both the main arm and the auxiliary arm are equipped with soil covering components at their bottom ends; A support cover that is linked to the main arm is installed between the two corresponding soil-covering claws, and the lifting and lowering of the support cover is set on the fixed plate. During transplanting, one of the main arms is driven to rotate, and the corresponding two soil covering parts open to the sides. At the same time, the support cover moves downward and inserts into the soil. Then, the support cover moves horizontally to form a planting hole, and the seedling falls into the planting hole through the support cover. When covering with soil, the cover moves upward and is pulled out of the soil, while the two corresponding covering parts move towards the center to cover with soil.

[0007] Preferably, the main arm is rotatably mounted on the fixed plate via the main shaft, and the auxiliary arm is rotatably mounted on the fixed plate via the auxiliary shaft. A main fan wheel is fixedly mounted on the main shaft, and an auxiliary fan wheel is fixedly mounted on the auxiliary shaft. The main fan wheel and the auxiliary fan wheel mesh with each other. An electric cylinder is hinged to the fixed plate, and one of the main fan wheels is hinged to the telescopic end of the electric cylinder.

[0008] Preferably, the soil covering component includes a square steel bar and a soil covering claw. The square steel bar is fixedly connected to the bottom end of the main arm or the auxiliary arm, and the soil covering claw is movably installed on the square steel bar.

[0009] Preferably, a fixed seat is provided on the side of the support cover, the fixed seat is fixedly installed on the fixed plate, a guide post is slidably provided on the fixed seat, the support cover is fixed to the bottom end of the guide post by the mounting bracket, a fixed rod is fixedly connected to the top of the support cover, and a sliding channel for the fixed rod to slide is opened in the upper half of the main arm.

[0010] Preferably, the cover is U-shaped with a large opening at the top.

[0011] Preferably, a lifting frame is provided on the top of the fixed plate.

[0012] Preferably, both the main arm and the auxiliary arm include, from top to bottom, a fixed section, an elastic telescopic rod, and a telescopic section. The fixed section is rotatably mounted on a fixed plate, and a side box corresponding to the telescopic section is fixedly installed on the fixed plate. The side box has an upper track and a lower track. A guide rod rotates on the telescopic section. When the soil covering claw opens outward, the guide rod enters the upper track and slides, causing the telescopic section to retract. When the soil covering claw moves towards the center, the guide rod enters the lower track and slides, causing the telescopic section to extend.

[0013] Preferably, the soil covering component includes a comb frame with multiple fixed teeth and multiple swing slits. The fixed teeth and swing slits intersect, and the width of the fixed teeth is smaller than the width of the swing slits. A fixed rod is fixedly installed on the comb frame, and the fixed rod is distributed along the length direction of the comb frame. Swing teeth are provided inside the swing slits and are rotatably mounted on the fixed rods. The top of the swing teeth has an arc portion and a right-angle portion on both sides, with the arc portion close to the support cover.

[0014] Preferably, a reinforcing plate is fixedly installed at the front end of the support cover, and a shovel plate is rotatably provided at the bottom of the reinforcing plate. A roller is installed at the bottom of the shovel plate, and the roller is close to the support cover.

[0015] The present invention also discloses a transplanter based on a seedling covering mechanism, which uses the above-mentioned seedling covering mechanism.

[0016] The technical effects and advantages of this invention are as follows: 1. This invention achieves efficient linkage between digging holes and covering soil by setting up structures such as a main arm, a secondary arm, and a support cover, ensuring uniform soil covering, convenient operation, and improving the efficiency of the transplanter. 2. Set up a support cover to compress and sort the soil, gradually forming a planting hole. At the same time, it guides the soil to both sides for subsequent covering with soil, and ensures that the seedlings slide smoothly down the inner side wall of the cover and fall accurately into the planting hole formed below. This effectively prevents the seedling roots from bending or shifting. In addition, it forms a barrier structure to prevent loose soil from falling back into the planting hole. 3. By setting up structures such as electric cylinders and side plates, the two sets of supporting components can be linked together, reducing equipment operating costs and standardizing transplanting operations; 4. By setting up structures such as side boxes, upper channels, and lower channels, the telescopic section can be adaptively retracted and extended, avoiding reverse scraping of the soil, ensuring the efficiency of the soil covering operation, and the telescopic process can also shake off the soil remaining on the soil covering claws, ensuring the stability of the soil covering. 5. By setting up structures such as comb frames, fixed teeth, and swing teeth, excessive reverse scraping of the soil is prevented, and the soil is loosened while maintaining a plate-like structure for covering. 6. By setting up structures such as shovels and rollers, the soil is loosened, reducing the pressure of moving the cover, while collecting soil and sliding it to the seedlings to ensure efficient soil covering. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the seedling covering mechanism of the present invention.

[0018] Figure 2 This is a schematic diagram of the fixed plate and lifting frame structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the sliding channel and fixed rod structure of the present invention.

[0020] Figure 4 This is a schematic diagram of the main arm and auxiliary arm structure of the present invention.

[0021] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the seedling covering mechanism of the present invention.

[0022] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point A in the middle.

[0023] Figure 7 This is a schematic diagram of the side box and guide rod structure of the present invention.

[0024] Figure 8 This is a schematic diagram of the fixing plate and support structure of the present invention.

[0025] Figure 9 This is a schematic diagram of the structure of Embodiment 3 of the seedling covering mechanism of the present invention.

[0026] Figure 10 For the present invention Figure 9Enlarged schematic diagram of the structure at point B.

[0027] Figure 11 This is a schematic diagram of the fixed tooth and sway bar structure of the present invention.

[0028] Figure 12 This is a schematic diagram of the structure of Embodiment 4 of the seedling covering mechanism of the present invention.

[0029] Figure 13 This is a schematic diagram of the shovel plate and reinforcing plate structure of the present invention.

[0030] In the diagram: 1. Fixed plate; 101. Side plate; 2. Main shaft; 3. Main arm; 4. Main fan wheel; 5. Sub-shaft; 6. Sub-arm; 7. Sub-fan wheel; 8. Electric cylinder; 9. Square steel; 10. Soil-covering claw; 11. Fixed seat; 12. Guide column; 13. Connecting rod; 14. Mounting bracket; 15. Support cover; 16. Sliding channel; 17. Fixed rod; 18. Lifting frame; 19. Side box; 20. 21. Guide rod; 22. Guide plate; 23. First elastic element; 24. Second elastic element; 25. Upper track; 26. Lower track; 27. Comb frame; 28. Fixed tooth; 28. Swinging slot; 29. ​​Fixed rod; 20. Swinging tooth; 21. Arc part; 22. Right angle part; 33. Shovel plate; 44. Reinforcing plate; 55. Roller; 66. Fixed section; 77. Elastic telescopic rod; 88. Telescopic section. Detailed Implementation

[0031] Example 1, the present invention provides as follows Figures 1-4 The illustrated seedling covering mechanism includes a fixed plate 1, with a lifting frame 18 on the top of the fixed plate 1. The lifting frame 18 is detachably mounted on the body of the transplanter via bolt assembly. The fixed plate 1 can move up and down at the bottom of the lifting frame 18, and its lifting action is driven by an electric cylinder, hydraulic cylinder, or screw transmission mechanism (not shown in the figure), adapting to the transplanting needs of different types of seedlings (such as vegetable, flower, and Chinese medicinal herb seedlings).

[0032] To achieve efficient linkage between excavation and backfilling, both ends of the fixed plate 1 are equipped with backfilling components. The backfilling components include a main shaft 2 and a secondary shaft 5. The main shaft 2 is rotatably mounted on the fixed plate 1 via ball bearings. A main arm 3 is fixedly installed at one end of the main shaft 2. The main arm 3 is V-shaped. A main fan wheel 4 is fixedly installed at the other end of the main shaft 2. The secondary shaft 5 is rotatably mounted on the fixed plate 1 via ball bearings. A secondary arm 6 is fixedly installed at one end of the secondary shaft 5. A secondary fan wheel 7 is fixedly installed at the other end of the secondary shaft 5. Multiple toothed blocks are provided on the arc-shaped edges of both the main fan wheel 4 and the secondary fan wheel 7. Through the cooperation of the toothed blocks, the main fan wheel 4 and the secondary fan wheel 7 are meshed and connected.

[0033] Reference Figure 2At the right end of the fixed plate 1, if the main fan wheel 4 rotates counterclockwise, it will drive the auxiliary fan wheel 7 to rotate clockwise. That is, in the same support assembly, the main arm 3 and the auxiliary arm 6 rotate in opposite directions.

[0034] Both the main arm 3 and the auxiliary arm 6 are equipped with soil covering components at their bottom ends. The soil covering components include a square steel 9 and soil covering claws 10. The square steel 9 is fixedly connected to the bottom end of the main arm 3 or the auxiliary arm 6. The soil covering claws 10 are installed on the square steel 9 by bolts and can be replaced periodically. The two ends of the soil covering claws 10 are arc-shaped to ensure that the soil is gathered towards the seedling. The two soil covering claws 10 can be opened to the sides or gathered towards the center.

[0035] To achieve linkage between the two sets of support components, a side plate 101 is provided on the side of the fixed plate 1. One end of the side plate 101 is hinged to the upper main fan wheel 4 of one set of support components, and the other end of the side plate 101 is hinged to the auxiliary fan wheel 7 of another set of support components. The corresponding main fan wheel 4 and auxiliary fan wheel 7 rotate in the same direction.

[0036] An electric cylinder 8 is hinged to the fixed plate 1. One of the main fan wheels 4 is hinged to the telescopic end of the electric cylinder 8. The electric cylinder 8 is connected to the power supply of the transplanter, and drives the corresponding main fan wheel 4 to rotate using the electric cylinder 8; see reference. Figure 2 When the telescopic end of the electric cylinder 8 is retracted, the main fan wheel 4 on the left rotates clockwise, causing the auxiliary fan wheel 7 on the left to rotate counterclockwise. With the cooperation of the side plate 101, the main fan wheel 4 on the right rotates counterclockwise in sync, causing the auxiliary fan wheel 7 on the right to rotate clockwise. That is, the two soil-covering claws 10 on both sides of the fixed plate 1 open to the sides or converge towards the center in sync.

[0037] In summary, by setting up structures such as electric cylinder 8 and side plate 101, the linkage of the two sets of supporting components can be realized, reducing equipment usage costs and standardizing transplanting operations.

[0038] Among them, a support cover 15 is set between the two corresponding soil-covering claws 10. The support cover 15 is made of high-strength material, such as stainless steel. The support cover 15 is U-shaped with openings at both the top and bottom. The opening at the top is wider than the opening at the bottom, so that the tops of the two side walls are tilted outward. This structure can provide a sufficient channel for the seedling to fall and can also form a relatively regular planting space after being inserted into the soil.

[0039] A fixed seat 11 is provided on the side of the support cover 15. The fixed seat 11 is fixedly installed on the fixed plate 1. A guide post 12 is slidably arranged on the fixed seat 11. A mounting frame 14 is fixedly installed at the bottom of the guide post 12. The support cover 15 is fixedly installed on the mounting frame 14. The fixed seat 11 and guide post 12 are provided to ensure the stable lifting and lowering of the support cover 15. A fixed rod 17 is fixedly connected to the top of the support cover 15. A sliding channel 16 for the fixed rod 17 to slide is opened in the upper half of the main arm 3. (Refer to...) Figure 3 When the main arm 3 rotates counterclockwise, guided by the sliding channel 16, the fixed rod 17 drives the support cover 15 to move downward until the fixed rod 17 moves to the bottom of the sliding channel 16. When the main arm 3 rotates clockwise to reset, guided by the sliding channel 16, the fixed rod 17 drives the support cover 15 to move upward until the fixed rod 17 moves to the top of the sliding channel 16.

[0040] A connecting rod 13 is fixedly connected between the tops of the two guide posts 12 to ensure the stability of the overall structure.

[0041] In actual use, the fixed rod 17 is equipped with a ball bearing or other structure to reduce wear between it and the sliding channel 16.

[0042] In the initial state, the two soil-covering claws 10 open to the sides, the cover 15 extends downward, and the fixing rod 17 moves to the bottom of the sliding channel 16.

[0043] After the transplanter moves to the preset planting position, the control plate 1 moves downward at the bottom of the lifting frame 18, and the support cover 15 moves vertically downward and inserts into the soil of the planting area. The insertion depth can be flexibly adjusted according to the root length of the seedling and planting needs to ensure that the depth of the planting hole meets the seedling planting standard. After the support cover 15 is inserted into the soil to the specified depth, the transplanter drives the support cover 15 to move horizontally, with the side opening of the support cover 15 at the rear end of its moving direction. During the horizontal movement, the U-shaped outer wall of the support cover 15 will squeeze and comb the soil, gradually forming a planting hole of a size suitable for seedling planting, while guiding the soil to both sides.

[0044] Meanwhile, the seedlings are transported by the seedling conveying mechanism to the top opening of the support cover 15. With the help of their own weight or a slight pushing force, they slide smoothly down the U-shaped inner wall of the support cover 15 and fall accurately into the planting hole formed below, effectively preventing the seedling roots from bending or shifting. In addition, during this process, the support cover 15 forms a barrier structure to prevent loose soil from falling back into the planting hole, ensuring that the seedlings fall stably into the planting hole.

[0045] After the seedlings are planted in the holes, the two corresponding soil-covering claws 10 are controlled to gather towards the center, and the soil on both sides is gathered towards the planting hole for soil covering. The two soil-covering claws 10 move synchronously to ensure uniform soil covering. At the same time, with the cooperation of the sliding channel 16 and the fixing rod 17, the support cover 15 is lifted vertically upward to remove it from the soil, so as to avoid affecting the soil covering, and finally achieve standardized transplanting of seedlings.

[0046] Next, the control plate 1 moves upward at the bottom of the lifting frame 18 and returns to the state where the two soil-covering claws 10 open to both sides and the support cover 15 extends downward. After the transplanter moves a small distance, the above steps are repeated to transplant the next seedling.

[0047] In summary, by setting up structures such as the main arm 3, the auxiliary arm 6, and the support cover 15, this invention achieves efficient linkage between digging holes and covering soil, ensures uniform soil covering, facilitates operation, and improves the efficiency of transplanting machines.

[0048] The support cover 15 is set up to compress and sort the soil, gradually forming a planting hole. At the same time, it guides the soil to both sides to facilitate subsequent covering with soil, and ensures that the seedlings slide smoothly down the inner side wall of the cover and fall accurately into the planting hole formed below. This effectively prevents the seedling roots from bending or shifting. In addition, it forms a barrier structure to prevent loose soil from falling back into the planting hole.

[0049] Example 2: To achieve continuous operation, the present invention provides the following... Figures 5-8 The shown is a seedling covering mechanism for plug trays. The main arm 3 and the auxiliary arm 6 each include a fixed section 32, an elastic telescopic rod 33 and a telescopic section 34 from top to bottom. The elastic telescopic rod 33 is fixedly connected between the fixed section 32 and the telescopic section 34. The fixed section 32 of the main arm 3 is rotatably mounted on the fixed plate 1 via the main shaft 2, and the fixed section 32 of the auxiliary arm 6 is rotatably mounted on the fixed plate 1 via the auxiliary shaft 5.

[0050] In actual use, a guide groove, guide rod and other structures are provided between the fixed section 32 and the telescopic section 34 to cooperate with the elastic telescopic rod 33, so as to ensure the stable contraction of the elastic telescopic rod 33 and improve the overall structural strength.

[0051] A side box 19, corresponding to the telescopic section 34, is fixedly installed on the fixed plate 1. A guide plate 21 is fixedly connected inside the side box 19. Both the side box 19 and the guide plate 21 are inclined, with the end near the support cover 15 inclined downwards. A second elastic element 23 is fixedly connected to the upward-inclined end of the guide plate 21. The end of the second elastic element 23 away from the guide plate 21 is inclined upwards. A first elastic element 22 is fixedly connected to the downward-inclined end of the guide plate 21. The end of the first elastic element 22 away from the guide plate 21 is inclined downwards (see reference). Figure 7The guide plate 21 and other structures are made of high-strength materials, such as stainless steel, and the first elastic element 22 and the second elastic element 23 both have elastic restoring ability. The guide plate 21, the first elastic element 22 and the second elastic element 23 work together to divide the interior of the side box 19 into an upper channel 24 and a lower channel 25. The upper channel 24 is located above the lower channel 25. The ends of the first elastic element 22 and the second elastic element 23 away from the guide plate 21 have gaps with the inner wall of the side box 19.

[0052] The upper track 24, lower track 25, and guide plate 21 can also be set to an arc shape, which can be adjusted according to the specific use.

[0053] The top of the side wall of the telescopic section 34 has a rotating guide rod 20. The end of the guide rod 20 away from the telescopic section 34 is switched with the upper track 24 and the lower track 25. The guide rod 20 is equipped with a ball bearing structure at the contact point with the upper track 24 and the lower track 25 to reduce wear and ensure smooth movement.

[0054] Specifically, refer to Figure 6 , Figure 7 When the soil-covering claw 10 opens outward, the guide rod 20 is guided by the arc surface of the first elastic element 22 into the upper channel 24 and moves from right to left within the upper channel 24. The telescopic section 34 adaptively retracts upward, the elastic telescopic rod 33 is compressed, and then the second elastic element 23 is squeezed into the left end position of the side box 19. Next, the soil-covering claw 10 converges towards the center, the guide rod 20 is guided by the arc surface of the second elastic element 23 into the lower channel 25 and moves from left to right within the lower channel 25. The telescopic section 34 adaptively extends downward, the elastic telescopic rod 33 is extended, and then the first elastic element 22 is squeezed into the right end position of the side box 19. The above steps are repeated.

[0055] In actual use, after the transplanter moves to the preset planting position, the fixing plate 1 is adjusted to a suitable height, and the two soil covering claws 10 are controlled to open outward. The guide rod 20 is guided by the arc surface of the first elastic element 22 to enter the upper track 24 and moves from right to left within the upper track 24. The telescopic section 34 retracts adaptively, and the elastic telescopic rod 33 is compressed. During this process, due to the retraction of the telescopic section 34, the soil covering claws 10 will not come into contact with the soil, avoiding reverse scraping of the soil and affecting the subsequent soil covering operation.

[0056] At the same time, the support cover 15 moves vertically downward and inserts into the soil of the planting area. Then, the transplanter drives the support cover 15 to move horizontally. During the horizontal movement, the U-shaped outer wall of the support cover 15 will squeeze and comb the soil, gradually forming a planting hole of suitable size for the seedlings, while guiding the soil to both sides.

[0057] Meanwhile, the seedlings are transported by the seedling conveying mechanism to the top opening of the support cover 15, and then slide smoothly down the U-shaped inner wall of the support cover 15 with their own weight or slight pushing force, accurately falling into the planting hole formed below, effectively preventing the seedling roots from bending or shifting.

[0058] After the seedlings are planted in the holes, the two corresponding soil-covering claws 10 are controlled to converge towards the center. The guide rod 20 is guided by the arc surface of the second elastic element 23 to enter the lower channel 25 and moves from left to right within the lower channel 25. The telescopic section 34 extends adaptively, and the soil-covering claws 10 come into contact with the soil, gathering the soil on both sides towards the planting hole for soil covering. At the same time, with the cooperation of the sliding channel 16 and the fixed rod 17, the support cover 15 is lifted vertically upward to detach from the soil, avoiding any impact on the soil covering.

[0059] The transplanter moves slowly in sync, then controls the two soil-covering claws 10 to open to the sides and the support cover 15 to extend downwards. After the transplanter has moved a short distance, the above steps are repeated to transplant the next seedling.

[0060] Furthermore, the extension and retraction process can shake off the soil remaining on the covering claw 10, ensuring the stability of the covering.

[0061] In this embodiment, there is no need to frequently control the fixed plate 1 to move up and down at the bottom of the lifting frame 18; adjustments can be made according to specific usage conditions.

[0062] By setting up structures such as side box 19, upper channel 24, and lower channel 25, the telescopic section 34 can be adaptively retracted and extended, avoiding reverse scraping of the soil and ensuring the efficiency of the soil covering operation.

[0063] Example 3: To achieve the effect of loosening soil, the present invention provides the following... Figures 9-11 The illustrated seedling covering mechanism includes a comb frame 26, which has multiple fixed teeth 2601 and multiple swing slits 2602. The fixed teeth 2601 and the swing slits 2602 are intersected, and the width of the fixed teeth 2601 is smaller than the width of the swing slits 2602. A fixed rod 27 is fixedly installed on the comb frame 26, and the fixed rod 27 is distributed along the length of the comb frame 26. Swing teeth 28 are provided inside the swing slits 2602, and the swing teeth 28 are rotatably mounted on the fixed rod 27.

[0064] The top of the oscillating tooth 28 has an arc-shaped portion 2801 and a right-angled portion 2802 on both sides, with the arc-shaped portion 2801 close to the support cover 15, as shown in the reference. Figure 10 The oscillating tooth 28 on the left side can swing counterclockwise, but cannot rotate clockwise.

[0065] When the two soil-covering claws 10 open to the sides, the bottom of the swing teeth 28 oscillates adaptively after contacting the soil, without exerting pressure on the soil. At the same time, multiple fixed teeth 2601 form a rake-like structure to loosen the soil. Due to the small width of the fixed teeth 2601, excessive reverse scraping of the soil is prevented. After the two soil-covering claws 10 open to the sides to their maximum angle, the bottom of the swing teeth 28 detaches from the soil and hangs down naturally under its own weight. Multiple fixed teeth 2601 and multiple swing teeth 28 are on the same plane to form a plate-like structure.

[0066] Next, the two soil-covering claws 10 converge towards the center to cover the soil. At this time, since the right-angled part 2802 abuts against the comb frame 26, the swing teeth 28 cannot turn over. When in contact with the soil, they maintain a plate-like structure and push the loose soil toward the planting hole to complete the soil-covering operation.

[0067] In this embodiment, there is no need to frequently control the fixed plate 1 to move up and down at the bottom of the lifting frame 18; adjustments can be made according to specific usage conditions.

[0068] By setting up structures such as comb frame 26, fixed teeth 2601, and swing teeth 28, excessive reverse scraping of the soil is prevented, and the soil is loosened while maintaining a plate-like structure for covering.

[0069] Example 4: To reduce the pressure on the support cover 15 and extend its service life, the present invention provides the following... Figures 12-13 The illustrated seedling covering mechanism has a reinforcing plate 30 fixedly installed on the U-shaped outer wall of the support cover 15. The reinforcing plate 30 is L-shaped and located at the front end of the support cover 15 in the direction of movement. There are two reinforcing plates 30, and a crossbar is fixedly connected between the two reinforcing plates 30. A shovel plate 29 is rotatably mounted on the crossbar. The upper surface of the shovel plate 29 can be recessed. A roller 31 is installed at the bottom of the shovel plate 29 and is close to the support cover 15. The reinforcing plates 30 and other components are made of high-strength materials, such as stainless steel, to ensure strength during use.

[0070] When the support cover 15 moves vertically downwards and inserts into the soil of the planting area, and because the roller 31 is close to the support cover 15, the end of the shovel plate 29 away from the support cover 15 tilts downwards and embeds itself into the soil. When the transplanter moves the support cover 15 horizontally, the shovel plate 29 will first loosen the soil, reducing the pressure of the subsequent movement of the support cover 15, and some soil will be collected on the shovel plate 29. When the support cover 15 is lifted vertically upwards to remove itself from the soil in preparation for covering with soil, the end of the shovel plate 29 away from the support cover 15 tilts upwards, and the soil on the shovel plate 29 slides towards the seedling, ensuring that there is enough soil at the seedling for covering with soil.

[0071] By setting up structures such as shovel plate 29 and roller 31, the soil is loosened, reducing the pressure of moving cover 15, while collecting soil and sliding it to the seedling, ensuring the efficiency of soil covering.

[0072] The present invention also discloses a transplanter based on a seedling covering mechanism, which achieves efficient linkage between digging holes and covering soil using the above-mentioned seedling covering mechanism.

Claims

1. A soil covering mechanism for plug seedlings, comprising a fixing plate (1), characterized in that: Both ends of the fixed plate (1) are provided with support components. The support components include a main arm (3) and a secondary arm (6). The main arm (3) and the secondary arm (6) are rotatably mounted on the fixed plate (1) and rotate in opposite directions. One main arm (3) located at both ends of the fixed plate (1) rotates in the same direction as the other auxiliary arm (6); Both the main arm (3) and the auxiliary arm (6) are equipped with soil covering components at their bottom ends; Between the two corresponding soil-covering claws (10), there is a support cover (15) that is linked to the main arm (3). The support cover (15) is raised and lowered on the fixed plate (1). When transplanting, drive one of the main arms (3) to rotate, and the corresponding two soil covering parts open to the sides. At the same time, drive the cover (15) to move downward and insert into the soil. Then the cover (15) moves horizontally to form a planting hole, and the seedling falls into the planting hole through the cover (15). When covering with soil, the cover (15) moves upward and is pulled out of the soil, while the two corresponding covering parts move towards the center to cover with soil.

2. The soil covering mechanism for plug seedlings according to claim 1, characterized in that: The main arm (3) is rotatably mounted on the fixed plate (1) via the main shaft (2), and the auxiliary arm (6) is rotatably mounted on the fixed plate (1) via the auxiliary shaft (5). The main fan wheel (4) is fixedly mounted on the main shaft (2), and the auxiliary fan wheel (7) is fixedly mounted on the auxiliary shaft (5). The main fan wheel (4) and the auxiliary fan wheel (7) mesh with each other. An electric cylinder (8) is hinged on the fixed plate (1), and one of the main fan wheels (4) is hinged to the telescopic end of the electric cylinder (8).

3. The soil covering mechanism for plug seedlings according to claim 1, characterized in that: The soil covering component includes a square steel (9) and a soil covering claw (10). The square steel (9) is fixedly connected to the bottom end of the main arm (3) or the auxiliary arm (6), and the soil covering claw (10) is movably installed on the square steel (9).

4. The soil covering mechanism for plug seedlings according to claim 1, characterized in that: The side of the support cover (15) is provided with a fixed seat (11), which is fixedly installed on the fixed plate (1). A guide post (12) is slidably provided on the fixed seat (11). The support cover (15) is fixed to the bottom end of the guide post (12) by the mounting bracket (14). A fixed rod (17) is fixedly connected to the top of the support cover (15). A sliding channel (16) for the fixed rod (17) to slide is opened in the upper half of the main arm (3).

5. The soil covering mechanism for plug seedlings according to claim 1, characterized in that: The cover (15) is U-shaped and has a large opening at the top.

6. The soil covering mechanism for plug seedlings according to claim 1, characterized in that: A lifting frame (18) is provided on the top of the fixed plate (1).

7. The soil covering mechanism for plug seedlings according to claim 1, characterized in that: The main arm (3) and the auxiliary arm (6) both include a fixed section (32), an elastic telescopic rod (33) and a telescopic section (34) from top to bottom. The fixed section (32) is rotatably mounted on the fixed plate (1). The fixed plate (1) is fixedly installed with side boxes (19) corresponding to the telescopic section (34). The side boxes (19) have an upper track (24) and a lower track (25). The telescopic section (34) has a guide rod (20) rotatably mounted on it. When the soil covering claw (10) opens to the outside, the guide rod (20) enters the upper track (24) and slides, causing the telescopic section (34) to retract. When the soil covering claw (10) moves to the middle, the guide rod (20) enters the lower track (25) and slides, causing the telescopic section (34) to extend.

8. The soil covering mechanism for plug seedlings according to claim 1, characterized in that: The soil covering component includes a comb frame (26), which has multiple fixed teeth (2601) and multiple swing slits (2602). The fixed teeth (2601) and the swing slits (2602) are intersected. The width of the fixed teeth (2601) is smaller than the width of the swing slits (2602). A fixed rod (27) is fixedly installed on the comb frame (26), and the fixed rod (27) is distributed along the length direction of the comb frame (26). A swing tooth (28) is provided inside the swing slit (2602). The swing tooth (28) is rotatably installed on the fixed rod (27). The top of the swing tooth (28) has an arc portion (2801) and a right angle portion (2802) on both sides, respectively. The arc portion (2801) is close to the cover (15).

9. The soil covering mechanism for plug seedlings according to claim 1, characterized in that: A reinforcing plate (30) is fixedly installed at the front end of the support cover (15), and a shovel plate (29) is rotatably provided at the bottom of the reinforcing plate (30). A roller (31) is installed at the bottom of the shovel plate (29), and the roller (31) is close to the support cover (15).

10. A transplanter based on a seedling tray covering mechanism, characterized in that: Use the seedling covering mechanism according to any one of claims 1 to 9.

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