Universal seed box frame

Abstract

The utility model relates to the technical field of agriculture, in particular to a universal seed box frame which comprises a seeding disc pulling frame, a fixing plate, a connecting plate, a mounting pipe and a mounting seat, and the fixing plate is detachably and fixedly mounted on the upper side of the left part of the seeding disc pulling frame. The adjustable seeding tray pulling frame is reasonable and compact in structure, when the adjustable seeding tray pulling frame is used, the seed box is fixedly installed on the upper side of the installation base, the seeding tray pulling frame and a seeding machine are installed together, and the position of the installation base can be adjusted through the first connecting piece, so that the position of the seed box can be adjusted, and the adjustable seeding tray pulling frame can adapt to the positions of various different seed receiving pipes; the position of the seed box can be conveniently adjusted according to the required line spacing, and through the first connecting piece penetrating through the mounting seat and the mounting pipe, the connection between the mounting seat and the mounting pipe is more stable, and the seed box can be prevented from being damaged after being mounted on the mounting seat. During seeding, the gravity of the seed box enables the distance between the two groove edges of the mounting seat slidably mounted on the mounting pipe to be gradually increased, so that the failure rate can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of agricultural technology and is a general-purpose seed box rack. Background Technology

[0002] Currently, the inoculation tube of the seed tray of a seeder is generally located on one side of the seed tray, and the position of the seed tube under the seed box also corresponds to the inoculation tube of the seed tray. Due to the different sizes of various seed trays, the position of the inoculation tube varies. For example, the structures of air suction seed trays, mechanical precision seed trays, semi-precision seed trays and seed trays are different. The position of the inoculation tube is sometimes on the left and sometimes on the right. Different types of seed trays need to be changed when sowing different crops. This requires the matching of multiple corresponding seed boxes and seed box frames, resulting in high sowing costs and the replacement process is labor-intensive and time-consuming.

[0003] Chinese patent document CN220654009U discloses an adjustable seed box frame, which includes a fixed rod, an adjusting sleeve, a connecting frame, a base, and a first fastening bolt. The connecting frame is fixedly installed at the lower part of the fixed rod, and the adjusting sleeve is slidably installed on the outer side of the fixed rod in a left-right direction. The lower side of the adjusting sleeve has a sliding groove that runs through the left and right sides and matches the upper part of the connecting frame. The base is fixedly installed on the upper side of the middle part of the adjusting sleeve, and the rear side of the adjusting sleeve has a first connecting hole that runs through the front and back. A first fastening bolt, whose front end abuts against the rear side of the fixed rod, is screwed into the first connecting hole. During use, after adding seeds to the seed box, the weight of the seed box is relatively large. During sowing, as the traction equipment moves forward, because the adjusting sleeve and the fixed rod are only limited by the first fastening bolt, the force exerted by the seed box on the adjusting sleeve easily causes the width of the sliding groove at the lower part of the adjusting sleeve to increase. This deformation of the adjusting sleeve easily leads to its separation from the fixed rod. Furthermore, this adjustable seed box frame requires numerous welds, resulting in high manufacturing costs. Summary of the Invention

[0004] This utility model provides a universal seed box frame that overcomes the shortcomings of the prior art. It can effectively solve the problems of existing seed box frames having a lot of welding, high manufacturing cost, low connection strength and easy failure.

[0005] The technical solution of this utility model is achieved through the following measures: A universal seed box frame includes a seed tray pull frame, a fixing plate, a connecting plate, an installation tube, and an installation base. The fixing plate is detachably and fixedly installed on the upper left side of the seed tray pull frame. The connecting plate is fixed on the upper left side of the fixing plate. The installation tube is horizontally arranged in the front-back direction. The upper side of the installation tube is provided with a vertically penetrating fixing hole. The upper side of the connecting plate is fixedly installed in the fixing hole. The left side of the installation tube corresponding to the front and rear positions of the connecting plate is provided with several horizontally penetrating adjustment holes at intervals. The installation base is slidably installed on the outer side of the installation tube in the front-back direction. The lower part of the installation base is provided with at least one connecting hole corresponding to the adjustment hole. The connecting hole is provided with a first connecting piece located on the right side of the installation base after its end passes through the adjustment hole. The upper left side of the installation base is provided with a vertically penetrating seeding hole.

[0006] The following are further optimizations and / or improvements to the above-mentioned utility model technical solution:

[0007] The aforementioned fixing plate and connecting plate can be installed as a single unit, with the fixing plate bent backward and upward from the upper side to form the connecting plate.

[0008] The aforementioned mounting base can be a U-shaped plate structure with an opening facing downwards. The upper right side of the mounting base has two U-shaped slits with openings facing right at intervals. The mounting base in each slit is bent downwards to form a connecting lug. A groove is formed between the right side of the connecting lug and the inner right side of the mounting base. The mounting tube is slidably installed in the groove. The left side of the connecting lug and the right side of the mounting base are provided with connecting holes that are connected from left to right and correspond to each other. The first connecting member includes a connecting bolt that passes through the adjustment hole and the corresponding connecting hole in the middle. A connecting nut is screwed to the end of the connecting bolt.

[0009] The aforementioned seeding tray support frame may include a frame, a pull tube, a mounting base, and a hanging rod. The upper rear side of the frame and the lower front side of the fixing plate are detachably and fixedly installed together. The left front side of the frame has a through-hole, and the front side of the frame corresponding to the right of the through-hole has a positioning hole, which is also through-hole. The pull tube is arranged in a left-right direction. The upper left side of the pull tube has an adjustment groove that opens to the left and runs vertically. The right outer side of the frame is located in the adjustment groove. The left front side of the pull tube corresponding to the adjustment groove has a hinge hole, which is through-hole. A hinge shaft is rotatably installed in the hinge hole. The middle part of the hinge shaft is installed together with the right side of the frame. The front side of the frame corresponding to the right of the hinge hole has an adjustment hole that communicates with the adjustment groove. The adjustment hole includes several adjustment through holes arranged around the central axis of the hinge shaft. Between each pair of adjacent adjustment through holes, the lower part of the upper adjustment through hole and the upper part of the lower adjustment through hole are connected through a fan-shaped hole. The adjustment through hole has an end... The second connector, installed together with the pull tube, has a hinge groove that runs horizontally through the lower side of the card holder. The right side of the pull tube is hinged and installed in the hinge groove. The upper part of the card holder is bent upward and to the left to form a connecting section. A U-shaped bolt with an opening facing left is detachably and fixedly installed on the lower part of the card holder corresponding to the lower position of the connecting section. A rotating sleeve is rotatably installed on the inner side of the upper part of the connecting section. A through hole is provided on the front side of the connecting section corresponding to the position of the rotating sleeve. A radially through rotating hole is provided on the outer side of the middle part of the rotating sleeve. The left end of the boom passes through the rotating hole and the through hole and is hinged and installed together with the upper side of the frame. Several card slots are provided at intervals on the outer side of the boom corresponding to the position above and below the rotating sleeve. An upper locking plate is installed in the card slot corresponding to the position above the rotating sleeve. A limit nut is screwed onto the outer side of the boom corresponding to the position above the upper locking plate. A lower locking plate is installed in one of the card slots corresponding to the position on the left side of the connecting section. An elastic reset component is located on the outer side of the boom between the lower locking plate and the rotating sleeve.

[0010] A mounting plate can be fixedly installed on the upper front side of the aforementioned frame. The upper part of the mounting plate is tilted to the left relative to the lower part, and the lower side of the fixing plate is bent backward and downward and can be detachably and fixedly installed together with the left side of the mounting plate.

[0011] This utility model has a reasonable and compact structure. In use, the seed box is fixedly installed on the upper side of the mounting base, and the seed tray pull frame is installed together with the seeder. The position of the mounting base can be adjusted through the first connecting piece, thereby adjusting the position of the seed box. It can adapt to the position of various inoculation tubes. The mounting tube is provided with 2 to 16 adjustment holes, and the position of the seed box can be easily adjusted according to the required row spacing. The design is more ingenious. By passing through the first connecting piece between the mounting base and the mounting tube, the connection between the mounting base and the mounting tube is more stable. This can prevent the mounting base from sliding on the mounting tube after the seed box is installed on the mounting base, and the distance between the two grooves of the mounting tube gradually increases during sowing, thus reducing the failure rate. Attached Figure Description

[0012] Appendix Figure 1These are schematic diagrams of the main cross-sectional structure after the seed box is installed in embodiments one to six of this utility model.

[0013] Appendix Figure 2 This is a schematic diagram of the left-side structure after the seed box is installed in embodiments one to six of this utility model.

[0014] Appendix Figure 3 This is a schematic diagram of the left-side cross-sectional structure of the mounting tube in embodiments one to six of this utility model.

[0015] Appendix Figure 4 This is a top view of the structure of the connecting ear in Embodiment 3 of this utility model when it is not bent.

[0016] Appendix Figure 5 This is a schematic diagram of the front sectional view of the mounting base in Embodiment 3 of this utility model.

[0017] Appendix Figure 6 This is a schematic diagram of the left side of the frame structure in Embodiment 5 of this utility model.

[0018] Appendix Figure 7 This is a top-view partial cross-sectional structural diagram of the tube drawing in Embodiment 5 of this utility model.

[0019] Appendix Figure 8 This is a schematic diagram of the left cross-sectional structure of the rotating sleeve in Embodiment 5 of this utility model.

[0020] Appendix Figure 9 This is a schematic diagram of the left-side structure of the boom in Embodiment 5 of this utility model.

[0021] Appendix Figure 10 This is a schematic diagram of the left side of the lower locking plate structure in Embodiment 5 of this utility model.

[0022] The codes in the attached diagram are as follows: 1 for fixed plate, 2 for connecting plate, 3 for mounting tube, 4 for fixing hole, 5 for adjusting hole, 6 for mounting base, 7 for slit, 8 for connecting lug, 9 for slide groove, 10 for connecting hole, 11 for connecting bolt, 12 for connecting nut, 13 for seeding hole, 14 for seeding tube, 15 for mounting hole, 16 for frame, 17 for pull tube, 18 for clamping seat, 19 for lifting rod, 20 for shaft hole, 21 for... 21 is the positioning hole, 22 is the adjustment groove, 23 is the hinge shaft, 24 is the adjustment through hole, 25 is the fan ring hole, 26 is the second connecting piece, 27 is the connecting section, 28 is the U-bolt, 29 is the rotating sleeve, 30 is the upper locking plate, 31 is the lower locking plate, 32 is the elastic reset piece, 33 is the limit nut, 34 is the front slot, 35 is the rear slot, 36 is the round hole section, 37 is the oblong hole section, 38 is the mounting plate, and 39 is the seed box. Detailed Implementation

[0023] This utility model is not limited to the following embodiments, and the specific implementation method can be determined according to the technical solution of this utility model and the actual situation.

[0024] In this utility model, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as the positional relationships of front, back, top, bottom, left, and right, which are based on the instructions attached. Figure 1 The orientation of the layout is determined by the direction of the map.

[0025] The present invention will be further described below with reference to the embodiments and accompanying drawings:

[0026] Example 1: As shown in the attached document Figure 1 , 2 As shown in Figure 3, the universal seed box frame includes a seed tray pull frame, a fixing plate 1, a connecting plate 2, a mounting tube 3, and a mounting base 6. The fixing plate 1 is detachably fixed on the upper left side of the seed tray pull frame. The connecting plate 2 is fixed on the upper left side of the fixing plate 1. The mounting tube 3 is horizontally arranged in the front-back direction. The upper side of the mounting tube 3 is provided with a vertically penetrating fixing hole 4. The upper side of the connecting plate 2 is fixedly installed in the fixing hole 4. The left side of the mounting tube 3, corresponding to the front and rear positions of the connecting plate 2, is provided with several horizontally penetrating adjustment holes 5 at intervals. The mounting base 6 is slidably installed on the outer side of the mounting tube 3 in the front-back direction. The lower part of the mounting base 6 is provided with at least one connecting hole 10 corresponding to the adjustment hole 5. The connecting hole 10 is provided with a first connecting piece located on the right side of the mounting base 6 after its end passes through the adjustment hole 5. The upper left side of the mounting base 6 is provided with a vertically penetrating seeding hole 13.

[0027] In use, the seed box 6 is fixedly installed on the upper side of the mounting base 6, and the seed tray pull frame is installed together with the seeder. The position of the mounting base 6 can be adjusted through the first connecting piece, thereby adjusting the position of the seed box 6 to accommodate the positions of various inoculation tubes. The mounting tube 3 is provided with 2 to 16 adjustment holes 5, and the position of the seed box 6 can be easily adjusted according to the required row spacing. The design is more ingenious. The first connecting piece passes through the mounting base 6 and the mounting tube 3. The first connecting piece can be a known technology, such as a bolt with a nut screwed to the end or a pin with an R-pin installed at the end. The middle part of the first connecting piece is located in the adjustment hole 5, and the two ends of the first connecting piece are located on the side of the mounting base 6. This makes the connection between the mounting base 6 and the mounting tube 3 more stable. It can prevent the mounting base 6 from sliding on the mounting tube 3 due to the weight of the seed box 6 during sowing, which would cause the distance between the two grooves of the mounting tube 3 to gradually increase, thus reducing the failure rate.

[0028] The above-mentioned general-purpose seed box rack can be further optimized and / or improved according to actual needs:

[0029] Example 2: As an optimization of the above examples, as shown in the appendix. Figure 1, 2 As shown, the fixing plate 1 and the connecting plate 2 are integrally formed, and the connecting plate 2 is formed by bending the upper side of the fixing plate 1 backward and upward.

[0030] As required, the connecting plate 2 and the mounting tube 3 are welded together to improve the strength of the connection. The upper left side of the fixing plate 1 is first bent backward and then bent upward to form the connecting plate 2. This integral setting of the fixing plate 1 and the connecting plate 2 can avoid welding between the fixing plate 1 and the connecting plate 2, which can simplify the manufacturing process and reduce manufacturing costs.

[0031] Example 3: As an optimization of the above examples, as shown in the appendix. Figure 1 , 2 As shown in Figures 4 and 5, the mounting base 6 is a U-shaped plate structure with its opening facing downwards. The upper right side of the mounting base 6 has two U-shaped slits 7 with their openings facing right at intervals. The mounting base 6 in each slit 7 is bent downwards to form a connecting lug 8. A groove 9 is formed between the right side of the connecting lug 8 and the inner right side of the mounting base 6. The mounting tube 3 is slidably installed in the groove 9. The left side of the connecting lug 8 and the right side of the mounting base 6 are provided with connecting holes 10 that are connected from left to right and correspond to each other. The first connecting component includes a connecting bolt 11 that passes through the adjustment hole 5 and the corresponding connecting hole 10 in the middle. A connecting nut 12 is screwed to the end of the connecting bolt 11.

[0032] Depending on the requirements, the mounting base 6 can be made from a single steel plate. First, a slit 7 is machined using a known laser cutting machine. Then, corresponding connecting holes 10 are machined at the positions corresponding to the slit 7 and on the upper right side of the mounting base 6. Next, the right side of the mounting base 6 is bent downwards using a stamping device, and then the left side of the mounting base 6 is bent downwards to form a U-shaped plate structure with the opening facing downwards. Finally, the mounting base 6 on the inner left side of the slit 7 is bent downwards by 90 degrees to form a connecting lug 8, so that the connecting hole 10 on the connecting lug 8 is coaxial with the connecting hole 10 on the right side of the mounting base 6. The left end of the bolt shank of the connecting bolt 11 passes through the connecting hole 10, the adjusting hole 5, and the connecting hole 10 of the connecting ear 8 on the right side of the mounting base 6 and is screwed with a connecting nut 12. In this way, the first connecting piece can fix the connecting ear 8 and the front side of the mounting base 6 to the mounting tube 3 together, thereby making the connection between the mounting base 6 and the mounting tube 3 more stable. This can prevent the distance between the two sides of the slide 9 (the connecting ear 8 and the right side of the mounting base 6) from gradually increasing due to the weight of the seed box 6 after the seed box 6 is installed on the mounting base 6 during sowing, thus reducing the failure rate.

[0033] Example 4: As an optimization of the above examples, as shown in the appendix. Figure 1 , 2 As shown in Figures 4 and 5, the upper side of the mounting base 6 corresponding to the left position of the connecting ear 8 is provided with a vertically penetrating seeding hole 13 and a mounting hole 15, and the lower side of the mounting base 6 corresponding to the seeding hole 13 is fixedly installed with a seeding tube 14.

[0034] According to the requirements, the seeding hole 13 corresponds to the seeding hole 13 of the seed box 6. The upper front and upper rear sides of the mounting base 6 are provided with two vertically penetrating mounting holes 15 at intervals. The lower side of the seed box 6 is provided with through holes corresponding to the mounting holes 15. Each through hole and the corresponding mounting hole 15 is provided with a fastening bolt. Each fastening bolt is screwed with a fastening nut at the end. This facilitates the disassembly and assembly between the mounting base 6 and the seed box 6. In order to prevent the upper end face of the seeding tube 14 from blocking the seeds, the inner diameter of the seeding tube 14 is larger than the diameter of the seeding hole 13.

[0035] Example 5: As an optimization of the above examples, as shown in the appendix. Figure 1 , 2 As shown in Figures 6 to 10, the seeding tray support includes a frame 16, a pull tube 17, a mounting base 18, and a hanging rod 19. The upper rear side of the frame 16 is detachably and fixedly installed together with the lower front side of the fixing plate 1. The left front side of the frame 16 has a through shaft hole 20, and the front side of the frame 16 corresponding to the right of the shaft hole 20 has a through positioning hole 21. The pull tube 17 is arranged in a left-right direction. The upper left side of the pull tube 17 has an adjustment groove 22 that opens to the left and runs vertically. The right outer side of the frame 16 is located in the adjustment groove 22, corresponding to the adjustment groove 29. The left front side of the pull tube 17 at position 2 has a through hinge hole, and a hinge shaft 23 is rotatably installed in the hinge hole. The middle part of the hinge shaft 23 is installed together with the right side of the frame 16. The front side of the frame 16 corresponding to the right position of the hinge hole has an adjustment hole communicating with the adjustment groove 22. The adjustment hole includes several adjustment through holes 24 arranged around the central axis of the hinge shaft 23. Between each two adjacent adjustment through holes 24, the lower part of the upper adjustment through hole 24 and the upper part of the lower adjustment through hole 24 are connected through a fan ring hole 25. The adjustment through hole 24 is provided with A second connector 26 is installed at one end with the pull tube 17. The lower side of the card holder 18 has a hinge groove that runs through the left and right sides. The right side of the pull tube 17 is hinged and installed in the hinge groove. The upper part of the card holder 18 is bent to the upper left to form a connecting section 27. A U-bolt 28 with an opening facing left is detachably and fixedly installed on the lower part of the card holder 18 corresponding to the position below the connecting section 27. A rotating sleeve 29 is rotatably installed on the inner side of the upper part of the connecting section 27. A through hole is provided on the front side of the connecting section 27 corresponding to the position of the rotating sleeve 29. A radially through rotating hole is provided on the outer side of the middle part of the rotating sleeve 29. The left end of the boom 19 passes through the rotating hole and the through hole and is hinged to the upper side of the frame 16. Several slots are provided on the outer side of the boom 19 at intervals above and below the rotating sleeve 29. An upper locking piece 30 is installed in the slot above the rotating sleeve 29. A limit nut 33 is screwed onto the outer side of the boom 19 above the upper locking piece 30. A lower locking piece 31 is installed in one of the slots on the left side of the connecting section 27. An elastic reset piece 32 is located on the outer side of the boom 19 between the lower locking piece 31 and the rotating sleeve 29.

[0036] Depending on the requirements, the frame 16 can be a plate structure. The right side of the frame 16 can be fan-shaped to facilitate the setting of adjustment holes and save materials. The card holder 18 can be made by bending existing steel plates, which can reduce welding operations and ensure the strength of the card holder 18. The width of the hinge groove on the lower side of the card holder 18 is smaller than the width of the card holder 18. The pull tube 17 is a square tube. The central shaft of the seeding tray can be fixedly installed in the shaft hole 20 using existing technology. For example, the central shaft of the seeding tray can be fixedly installed in the shaft hole 20 by a variable diameter sleeve symmetrically arranged at the front and rear. The positioning pin of the seeding tray can be installed in the positioning hole 21. The positioning hole 21 can also be an oblong hole. The shaft hole 20, together with the positioning sleeve, can be used to install a pneumatic hollow shaft or a common small shaft. The positioning hole 21 can also be used to fix the seeding tray.

[0037] The hinge shaft 23 can be any known technology, such as a fixing bolt with a fixing nut screwed in, or a pin with a cotter pin at the end. The left front side of the pull tube 17 has a hinge hole for the fixing bolt to pass through. The front side of the frame 16 has a hinge through hole corresponding to the hinge hole. The middle outer side of the fixing bolt passes through the hinge through hole. The second connecting piece 26 can be any known technology, such as a positioning bolt with a positioning nut screwed in. The rotating sleeve 29 can be a solid rod structure or a hollow rod structure.

[0038] The width of the hinge groove matches the width of the pull tube 17, which prevents the pull tube 17 from swinging back and forth. The right end of the pull tube 17 has a through hole that runs through the front and back. A wear-resistant sleeve is fixedly installed in the through hole. The front end and rear end of the wear-resistant sleeve are close to the inner front part of the card holder 18 and the inner rear part of the card holder 18, respectively. A screw with its rear end passing through the wear-resistant sleeve and located on the rear side of the card holder 18 is installed on the lower front part of the card holder 17. A locking nut is screwed to the rear end of the screw to facilitate the adjustment of the gap and prevent the pull tube 17 from swinging.

[0039] Since the height of the seeder beam remains constant, after installing different sizes of seed trays, by setting the frame 16 and adjusting holes, the second connecting piece 26 is installed in the adjusting through holes 24 at different positions, changing the angle of the frame 16. This ensures that the seed trays are in the correct position and perpendicular to the ground when different sizes of seed trays are installed, facilitating normal sowing operations and reducing the failure rate of the seed trays. Similarly, the frame 16 and adjusting holes can also be used to install seed trays of different sizes on the beam at different heights, allowing most sizes of seeders on the market to be quickly and easily installed with seed trays of different sizes.

[0040] The left end of the boom 19 is fixedly installed with a U-shaped hinge lug that faces downward. The hinge lug is hinged to the upper left side of the frame 16 by conventional connecting screws or conventional pins and R-type pins. The right end of the boom 19 is tilted to the upper right relative to the left end.

[0041] The rotating sleeve 29 facilitates the floating and limiting of the boom 19. Several slots are spaced apart on the outer left side of the boom 19 corresponding to the left position of the rotating sleeve 29 and on the outer right side of the boom 19 corresponding to the right position of the rotating sleeve 29. These slots include a front slot 34 located on the outer front side of the boom 19 and a rear slot 35 corresponding to the front slot 34 and located on the outer rear side of the boom 19. Both ends of the front slot 34 and the rear slot 35 extend to the outer surface of the boom 19. The upper locking plate 30 and the lower locking plate 31 have the same structure. The lower locking plate 31 has a through-hole that can engage with the front slot 34 and the corresponding rear slot. The long oval hole section 37 on the outer side of the boom 19 between 35 and the round hole section 36 that can be fitted onto the outer side of the left end of the boom 19 are connected at the lower part of the long oval hole section 37 and the upper part of the round hole section 36. The lower locking plate 31 is locked in the lowermost front locking groove 34 and the corresponding rear locking groove 35. The upper locking plate 30 is locked in a front locking groove 34 and the corresponding rear locking groove 35 above the rotating sleeve 29. The elastic reset member 32 is a compression spring fitted onto the outer side of the boom 19 between the lower locking plate 31 and the rotating sleeve 29. The right end of the compression spring abuts against the outer side of the left part of the rotating sleeve 29. The boom 19, the hinge ear, the upper locking plate 30 and the lower locking plate 31 can all be existing known technologies.

[0042] Multiple (2 to 10) slots are provided, allowing the lower locking plate 31 to move axially and be positioned quickly on the lifting rod 19. This facilitates easy assembly and disassembly, and the seed tray can be hoisted to different heights as needed. The slots below can also adjust the pressure of the compression spring and the position of the lower locking plate 31 according to different soil conditions. During sowing, the seed tray ensures that the seeds are located at a certain depth in the soil, which is limited by the limiting nut 33. When disassembling and inspecting the seed tray, the limiting nut 33 drives the lifting rod 19, the lifting rod 19 and the frame 16 to rotate upwards, locking the upper locking plate 30 into the slot on the right side of the lifting rod 19. This allows for the replacement of seed trays of different specifications, while also increasing the disassembly and assembly space, reducing maintenance intensity, shortening maintenance time, and thus improving sowing efficiency.

[0043] To improve the stability of the card holder 18 after assembly with the crossbeam, a through-groove slot is provided on the right side of the card holder 18 corresponding to the position of the U-bolt 28. The slot matches the crossbeam. In this way, the combined action of the slot and the U-bolt 28 can make the crossbeam and the card holder 18 stably installed together, thereby ensuring the stability of the seed box frame during use.

[0044] This utility model has a reasonable and compact structure, good versatility, and is easy to use, which greatly improves the utilization rate and effectively reduces the manufacturing cost, making it easy to promote to a wide range of users.

[0045] Example 6: As an optimization of the above examples, as shown in the appendix Figure 1 , 2As shown in Figure 6, a mounting plate 38 is fixedly installed on the upper left side of the frame 16. The upper part of the mounting plate 38 is tilted to the left relative to the lower part, and the upper part of the fixing plate 1 is tilted to the left relative to the lower part. After the lower side of the fixing plate 1 is bent to the lower left, it is detachably and fixedly installed together with the rear side of the mounting plate 38.

[0046] As required, the lower side of the fixing plate 1 is bent to the lower left, that is, the acute angle between the fixing plate 1 and the horizontal line becomes larger, making the connection between the fixing plate 1 and the mounting plate 38 more compact. The lower front side of the fixing plate 1 is provided with two through rear bolt holes, and the front side of the mounting plate 38 is provided with at least two through front bolt holes, and the center distance between any two adjacent front bolt holes is the same as the center distance between the rear bolt holes. The lower front side of the fixing plate 1 and the rear side of the mounting plate 38 can be detachably fixed together by bolts with nuts screwed into the front and rear bolt holes at the rear end. By providing at least two through front bolt holes, the height of the seed box 6 can be easily adjusted to accommodate different sizes of seeding trays, and the adjustment is convenient.

[0047] The above technical features constitute various embodiments of the present invention, which have strong adaptability and implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the needs of different situations.

Claims

1. A universal seedling tray rack characterized by The device includes a seed tray support frame, a fixing plate, a connecting plate, a mounting tube, and a mounting base. The fixing plate is detachably fixed to the upper left side of the seed tray support frame. The connecting plate is fixed to the upper left side of the fixing plate. The mounting tube is horizontally arranged in a front-back direction. The upper side of the mounting tube has a vertically penetrating fixing hole. The upper side of the connecting plate is fixedly installed in the fixing hole. The left side of the mounting tube corresponding to the front and rear positions of the connecting plate has several horizontally penetrating adjustment holes spaced back-to-back. The mounting base is slidably installed on the outer side of the mounting tube in a front-back direction. The lower part of the mounting base has at least one connecting hole corresponding to the adjustment hole. The connecting hole has a first connecting piece located on the right side of the mounting base after its end passes through the adjustment hole. The upper left side of the mounting base has a vertically penetrating seeding hole.

2. The universal seedling tray stand according to claim 1, wherein The fixing plate and the connecting plate are integrated. The fixing plate is bent from the upper side to the back and upward to form the connecting plate.

3. The universal seedling tray rack according to claim 1 or 2, characterized in that The mounting base is a U-shaped plate structure with an opening facing downwards. The upper right side of the mounting base has two U-shaped slits with openings facing right at intervals. The mounting base in each slit is bent downwards to form a connecting lug. A groove is formed between the right side of the connecting lug and the inner right side of the mounting base. The mounting tube is slidably installed in the groove. The left side of the connecting lug and the right side of the mounting base are provided with connecting holes that are connected from left to right and correspond to each other. The first connecting component includes a connecting bolt that passes through the adjustment hole and the corresponding connecting hole in the middle. A connecting nut is screwed to the end of the connecting bolt.

4. The universal seedling tray rack of claim 3, wherein The upper side of the mounting base corresponding to the left position of the connecting ear is provided with a vertically penetrating seeding hole and a mounting hole, and the lower side of the mounting base corresponding to the seeding hole is fixedly installed with a seeding tube.

5. The universal seedling tray stand according to claim 1 or 2 or 4, wherein The seeding tray support includes a frame, a pull tube, a mounting base, and a hanging rod. The upper rear side of the frame is detachably and fixedly installed with the lower front side of the fixing plate. A through-hole is located on the front left side of the frame, and a positioning hole is located on the front right side of the frame corresponding to the right of the through-hole. The pull tube is oriented left-right, and an adjustment groove with an opening to the left and extending vertically is located on the upper left side of the pull tube. The right outer side of the frame is positioned within the adjustment groove. A hinge hole is located on the front left side of the pull tube corresponding to the adjustment groove, and a hinge shaft is rotatably installed within the hinge hole. The middle part of the hinge shaft is installed with the right side of the frame. An adjustment hole communicating with the adjustment groove is located on the front right side of the frame corresponding to the right of the hinge hole. The adjustment hole includes several adjustment through holes arranged around the central axis of the hinge shaft. Between each pair of adjacent adjustment through holes, the lower part of the upper adjustment through hole and the upper part of the lower adjustment through hole are connected through a fan-shaped ring hole. The adjustment through holes have end caps that connect to the pull tube. The second connector, which is installed with the pipes, has a hinged groove that runs through the left and right sides on the lower side of the card holder. The right side of the pull pipe is hinged and installed in the hinged groove. The upper part of the card holder is bent to the upper left to form a connecting section. A U-shaped bolt with an opening facing left is detachably fixed to the lower part of the card holder at the position below the connecting section. A rotating sleeve is rotatably installed on the inner side of the upper part of the connecting section. A through hole is provided on the front side of the connecting section corresponding to the position of the rotating sleeve. A radially through rotating hole is provided on the outer side of the middle part of the rotating sleeve. The left end of the lifting rod passes through the rotating hole and the through hole and is hinged and installed together with the upper side of the frame. Several card slots are provided at intervals on the outer side of the lifting rod at the positions above and below the rotating sleeve. An upper locking plate is installed in the card slot at the position above the rotating sleeve. A limit nut is screwed onto the outer side of the lifting rod at the position above the upper locking plate. A lower locking plate is installed in one of the card slots at the position on the left side of the connecting section. An elastic reset component is located on the outer side of the lifting rod between the lower locking plate and the rotating sleeve.

6. The universal seedling tray stand according to claim 3, wherein The seeding tray support includes a frame, a pull tube, a mounting base, and a hanging rod. The upper rear side of the frame is detachably and fixedly installed with the lower front side of the fixing plate. A through-hole is located on the front left side of the frame, and a positioning hole is located on the front right side of the frame corresponding to the right of the through-hole. The pull tube is oriented left-right, and an adjustment groove with an opening to the left and extending vertically is located on the upper left side of the pull tube. The right outer side of the frame is positioned within the adjustment groove. A hinge hole is located on the front left side of the pull tube corresponding to the adjustment groove, and a hinge shaft is rotatably installed within the hinge hole. The middle part of the hinge shaft is installed with the right side of the frame. An adjustment hole communicating with the adjustment groove is located on the front right side of the frame corresponding to the right of the hinge hole. The adjustment hole includes several adjustment through holes arranged around the central axis of the hinge shaft. Between each pair of adjacent adjustment through holes, the lower part of the upper adjustment through hole and the upper part of the lower adjustment through hole are connected through a fan-shaped ring hole. The adjustment through holes have end caps that connect to the pull tube. The second connector, which is installed with the pipes, has a hinged groove that runs through the left and right sides on the lower side of the card holder. The right side of the pull pipe is hinged and installed in the hinged groove. The upper part of the card holder is bent to the upper left to form a connecting section. A U-shaped bolt with an opening facing left is detachably fixed to the lower part of the card holder at the position below the connecting section. A rotating sleeve is rotatably installed on the inner side of the upper part of the connecting section. A through hole is provided on the front side of the connecting section corresponding to the position of the rotating sleeve. A radially through rotating hole is provided on the outer side of the middle part of the rotating sleeve. The left end of the lifting rod passes through the rotating hole and the through hole and is hinged and installed together with the upper side of the frame. Several card slots are provided at intervals on the outer side of the lifting rod at the positions above and below the rotating sleeve. An upper locking plate is installed in the card slot at the position above the rotating sleeve. A limit nut is screwed onto the outer side of the lifting rod at the position above the upper locking plate. A lower locking plate is installed in one of the card slots at the position on the left side of the connecting section. An elastic reset component is located on the outer side of the lifting rod between the lower locking plate and the rotating sleeve.

7. The universal seedling tray stand according to claim 5, wherein A mounting plate is fixedly installed on the upper left side of the frame. The upper part of the mounting plate is tilted to the left relative to the lower part, and the upper part of the fixed plate is tilted to the left relative to the lower part. The lower side of the fixed plate is bent to the lower left and can be detachably and fixedly installed together with the rear side of the mounting plate.

8. The universal seedling tray rack of claim 6, wherein A mounting plate is fixedly installed on the upper left side of the frame. The upper part of the mounting plate is tilted to the left relative to the lower part, and the upper part of the fixed plate is tilted to the left relative to the lower part. The lower side of the fixed plate is bent to the lower left and can be detachably and fixedly installed together with the rear side of the mounting plate.

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