A top-ejecting type seedling taking device for rape pot seedlings

Abstract

This invention relates to a rapeseed potted seedling ejection and seedling separation device, belonging to the field of rapeseed planting technology. It includes a support structure, a seedling tray loading and positioning mechanism, a seedling tray pull-down mechanism, a transmission system, a seedling ejection mechanism, a seedling receiving mechanism, a seedling conveying and separation mechanism, and a pressure plate recovery mechanism. The seedling tray loading and positioning mechanism is located in the middle of the support structure, the seedling tray pull-down mechanism is located on both sides of the seedling tray loading and positioning mechanism, the seedling ejection mechanism is located inside the support structure, the seedling receiving mechanism is located below the seedling ejection mechanism, and the seedling conveying and separation mechanism is located below the seedling receiving mechanism. The transmission system is connected to the seedling tray pull-down mechanism, the seedling ejection mechanism, the seedling receiving mechanism, and the seedling conveying and separation mechanism, respectively. This invention designs the seedling tray conveying function, seedling ejection function, seedling receiving function, and seedling conveying and separation function to be linked, making the seedling extraction orderly and precise, ensuring efficient seedling extraction.

Description

Technical Field

[0001] This invention relates to the field of rapeseed planting technology, specifically to a rapeseed seedling extraction and transplanting device that uses a top-out method for seedlings in a pot. Background Technology

[0002] Rapeseed is my country's largest oilseed crop. Improving the mechanization of the entire rapeseed production process is of great significance for ensuring national oilseed security, enhancing comprehensive agricultural productivity, and promoting agricultural modernization. The development of a low-damage transplanter for rapeseed seedlings in pots, suitable for multiple cropping systems in southern China, aims to alleviate the technical challenges of crop rotation in multiple cropping systems such as rice-rapeseed rapeseed and rice-rice-rapeseed rapeseed in southern China, and to safeguard national food and oil security.

[0003] Although rapeseed mechanical transplanting technology and equipment have developed and been applied rapidly, the problem of seedling collection remains one of the key challenges hindering the automation of rapeseed transplanting. Currently, rapeseed transplanting mainly involves blanket seedling transplanting and pot seedling transplanting. Blanket seedling transplanting is prone to root damage and has a long greening time, which is not conducive to the connection of multiple cropping systems such as rice-rapeseed rice and rice-rice-rapeseed rice in the south. Pot seedling transplanting has a low mechanization rate, complex structure, poor seedling collection effect, and low automation rate.

[0004] Therefore, the design of a rapeseed pot seedling extraction device using a double crank and slider ejection method has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to design a rapeseed pot seedling ejection type seedling extraction device to solve the problems of low extraction efficiency, high equipment cost, complex structure and large damage in the existing rapeseed pot seedling extraction process.

[0006] To achieve the above objectives, the present invention provides a rapeseed potted seedling ejection and separation device, comprising: a support structure, a seedling tray loading and positioning mechanism, a seedling tray pull-down mechanism, a transmission system, a seedling ejection mechanism, a seedling receiving mechanism, a seedling conveying and separation mechanism, and a pressure plate recovery mechanism; the seedling tray loading and positioning mechanism is located in the middle of the support structure, the seedling tray pull-down mechanism is located on both sides of the seedling tray loading and positioning mechanism, the seedling ejection mechanism is located inside the support structure and connected to the support structure, the seedling receiving mechanism is located below the seedling ejection mechanism and inside the support structure and connected to the support structure, and the seedling conveying and separation mechanism is... The system is positioned below the seedling receiving mechanism and connected to the supporting structure. The transmission system is connected to the seedling tray pull-down mechanism, the seedling top mechanism, the seedling receiving mechanism, and the seedling conveying and separating mechanism. One end of the transmission system is connected to the power input end. The power input drives the seedling tray pull-down mechanism to convey the seedling tray after passing through the transmission system. After the seedling tray is conveyed to the position where the rapeseed pot seedlings are lifted, the seedling top mechanism is driven to lift the pot seedlings out of the seedling tray. The transmission system drives the seedling receiving mechanism to catch and clamp the lifted rapeseed pot seedlings from below. Then, the tray is flipped and placed into the seedling conveying and separating mechanism to realize the seedling separation function. The seedling tray with the seedlings removed is recycled to the pressing plate recycling mechanism.

[0007] Furthermore, the supporting structure includes a seedling box support plate, a support square tube, a large support rib, a rear box cover plate, a main side plate, a gasket, a bottom plate, a rear box side plate, a front box cover plate, a support plate, a rear box bottom plate, a front box side plate, a transmission box rear side plate, a front box bottom plate, a hook shaft support plate, a transmission box side plate, a transmission box bottom plate, a transmission box cover plate, a recovery support plate, a seedling box fixing plate, small support ribs, and a seedling box frame bottom plate. The transmission box bottom plate is fixedly installed on top of the base plate. The left and right transmission box side plates are symmetrically welded to the transmission box bottom plate. The transmission box cover plate is welded to the two transmission box side plates. The hook shaft support plate is symmetrically welded to both sides of the base plate. The left and right transmission box rear side plates are connected to the transmission box. The side plates and hook shaft support plates are welded together. The rear box bottom plate and the front box bottom plate are welded to the main side plate and symmetrically installed on the bottom plate by bolts. The front box side plate and the front box cover plate are welded to the front box bottom plate and the main side plate to form the front box body. The rear box bottom plate, the rear box side plate and the rear box cover plate are welded to the main side plate to form the rear box body. Support plates are welded between the main side plate and the rear box side plate. Large support ribs are welded between the main side plate and the rear box cover plate. The bottom end of the support square tube is welded with a gasket and then fixed to the bottom plate by bolts. The recovery support plates are symmetrically welded to the rear sides of the bottom plate. The seedling box fixing plate is welded to the rear box cover plate and the seedling box frame bottom plate to form the upper box body. Small support ribs are welded between the main side plate and the seedling box frame bottom plate.

[0008] Furthermore, the seedling tray loading and positioning mechanism includes a seedling box one, a seedling box two, a compression spring, a seedling tray pressure plate, an arc-shaped fixing plate, and a seedling tray. Seedling box one and seedling box two are sleeved together and fixed in the middle of the seedling box support plates on both sides. The compression spring is sleeved on one end of seedling box two and seedling tray pressure plate to provide pressure plate positioning function. The seedling tray pressure plate and the arc-shaped fixing plate are both fixed on the seedling box fixing plate.

[0009] Furthermore, the seedling tray pull-down mechanism includes a bearing seat, a left hook, a right hook, a slide rail, a fixing plate, a pull rod, a slider, a crankshaft, a first bearing, a torsion spring, a connecting rod, and a second bearing. The slide rail is fixed to the main side plate, and the slider slides in slidable engagement with the slide rail. One end of the connecting rod is welded to the fixing plate and fixed to the slider with bolts, while the other end is connected to the right hook through the first bearing. The bearing seat fixes the crankshaft to the rear side plate and the main side plate and drives it through the transmission system. One end of the connecting rod is sleeved with the crankshaft through the second bearing, and the other end of the connecting rod is connected to the pull rod through the bearing, thereby driving the pull rod to move up and down, driving the hook to pull down the seedling tray. The torsion spring is connected to the connecting rod and the hook respectively and sleeved on the pull rod to ensure that the hook can always hook the seedling tray.

[0010] Furthermore, the transmission system includes a crankshaft sprocket, chain one, small sprocket, seedling-pulling shaft, motor, motor bracket, universal joint, drive sprocket, bevel gear, main drive shaft, main sprocket, chain two, seedling-receiving sprocket, seedling-receiving drive shaft, seedling-topping drive shaft, seedling-topping sprocket, and conveyor belt drive shaft. The motor is fixedly mounted on the motor bracket, and the motor shaft is connected to the main drive shaft via a universal joint. The main drive shaft is mounted on both sides of the transmission box via bearing seats. Drive sprockets are fitted at both ends of the main drive shaft and drive the seedling-pulling shaft and crankshaft to rotate via chain one, small sprocket, and crankshaft sprocket. The seedling-pulling shaft is mounted on the main side plate and the front box side plate via bearing seats. The crankshaft is mounted on the main side plate and the rear box side plate via bearing seats. Bevel gears are symmetrically mounted on the main drive shaft and drive the conveyor belt drive shaft via the bevel gear set. The main sprocket is mounted in the middle of the main drive shaft and is connected to the seedling-receiving sprocket and seedling-topping sprocket via chain two, respectively, driving the seedling-receiving drive shaft and the seedling-topping drive shaft.

[0011] Furthermore, the seedling-lifting mechanism includes a lifting rod, a seedling-lifting plate, a spring plunger, a fixing plate, a box-type linear bearing, a seedling-lifting pull rod, a Y-type connector, a fish-eye pull rod one, a screw, a crank disc, and a horizontal shaft support. The four box-type linear bearings are respectively fixed on the left and right main side plates. The seedling-lifting drive shaft is mounted on the transmission box through bearing seats, and horizontal shaft supports and crank discs are respectively installed at both ends. One end of the fish-eye pull rod one is connected to the screw on the crank disc, and the other end is hinged to the Y-type connector. The Y-type connector is connected to the seedling-lifting pull rod and drives the seedling-lifting pull rod to reciprocate. The seedling-lifting pull rod is welded to the fixing plate, and the fixing plate is connected to the seedling-lifting plate through bolts to drive the lifting rod to reciprocate horizontally. The spring plunger and the lifting rod are both threadedly connected to the seedling-lifting plate. The spring plunger is symmetrically installed on the seedling-lifting plate to press down the edge of the seedling tray before lifting the seedling and prevent the seedling tray from being pushed out of seedling box one and seedling box two.

[0012] Furthermore, the seedling receiving mechanism includes a seedling receiving component, a seedling receiving shaft, a flange bearing, a movable block one, a linear slide rail limiting block, a slide rail two, a slider two, a compression spring, a movable block two, a seedling receiving push rod, a Y-type connector, a fisheye pull rod two, a screw two, a crank disc two, a horizontal shaft support two, a movable block three, a face cam, a rack and pinion, and gears. Two slide rails two are respectively fixed to the left and right main side plates. Slider two mates with slide rail two and is respectively bolted to movable blocks one, two, and three. Compression springs are connected between movable blocks two and one, and between movable blocks two and three. Movable blocks one and three are respectively connected to the two sides of the seedling receiving shaft via flange bearings. On one side, a gear is installed at one end of the seedling receiving shaft. The gear meshes with a rack fixed on the main side plate. The seedling receiving component is installed on the seedling receiving shaft. The face cam is installed on the movable block three and contacts the seedling receiving component. The seedling receiving drive shaft is installed on the transmission box through a bearing seat. Horizontal shaft support two and crank disc three are installed at both ends respectively. Horizontal shaft support two is sleeved on the seedling receiving drive shaft and clamped to the seedling receiving drive shaft by bolts and connected to crank disc two by bolts. One end of fisheye pull rod two is connected to screw two on crank disc two, and the other end is hinged to Y-type joint. Y-type joint is connected to seedling receiving push rod and drives movable block one and movable block three sleeved on seedling receiving push rod to drive the seedling receiving shaft to reciprocate.

[0013] Furthermore, the seedling receiving component includes a movable clamping pot, a fixed clamping pot, a seedling receiving guard plate, a seedling receiving base plate, a universal ball, a seedling receiving frame, a seedling clamping push rod, and a compression spring. The seedling receiving frame is fixedly connected to the seedling receiving shaft, the seedling receiving guard plate is welded to the seedling receiving frame, the seedling receiving base plate is welded above the two seedling receiving frames, the seedling clamping push rod passes through the two seedling receiving frames and is slidably connected to the seedling receiving frame, multiple fixed clamping pots are installed at intervals on the top of the seedling receiving base plate, and multiple movable clamping pots that match the fixed clamping pots are connected to the top of the seedling clamping push rod through a connecting plate. The compression spring is located between the seedling receiving frame and the connecting plate, and the universal ball is installed at the end of the seedling clamping push rod and contacts the cam fixed on the movable block three.

[0014] Furthermore, the seedling conveying and separating mechanism includes a first conveyor support frame, a conveyor belt, a pressure pot wheel, a seedling pulling wheel, a partition, a pressure pot wheel drive motor, a second conveyor support frame, and a driven shaft of the conveyor belt. The first conveyor support frame is bolted to the base plate to support the seedling conveying and separating mechanism. The first and second conveyor support frames are connected to the drive shaft and driven shaft of the conveyor belt through bearings and provide support. The partition is installed between the first and second conveyor support frames to isolate the seedlings in the pots on the left and right conveyor belts. The pressure pot wheel drive motors are symmetrically installed on both sides of the second conveyor support frame. The pressure pot wheel drive motors are connected to the pressure pot wheels to press down the pots. The seedling pulling wheel is installed at the end of the seedling pulling drive shaft near the pressure pot wheel.

[0015] Furthermore, the pressure plate recycling mechanism includes pressure plates, pressure plate frame one, pressure plate frame two, recycling slide, recycling support plate, pressure strip fixing rod, arc-shaped seedling tray inner guide rail, and pressure strip. The four pressure plates are respectively fixed on pressure plate frame one and pressure plate frame two to pre-press the seedling tray to prevent the seedling tray from detaching from seedling box one and seedling box two during the seedling lifting process. Pressure plate frame one and pressure plate frame two are both fixed on the two seedling box support plates. The recycling slide is symmetrically installed on the seedling box fixing plate and cooperates with the pressure strip for seedling tray recycling. The pressure strip is sleeved on the pressure strip fixing rod, and the two ends of the pressure strip fixing rod are installed on the recycling support plate. The seedling tray inner guide rail is fixed to the arc-shaped fixing plate by bolts for lateral positioning of the seedling tray.

[0016] The beneficial effects of this invention are as follows:

[0017] (1) The present invention uses a crank-slider intermittent conveying method to convey seedling trays. When the device is working, the crank shaft drives the hook to move up and down to pull the seedling tray to the top seedling position. Then the positioning mechanism presses the seedling tray to keep the seedling accurately topped. Therefore, the invention can accurately position the seedling tray and pot hole to push out and pick up the seedling.

[0018] (2) The present invention adopts the crank slider ejection method, which can effectively avoid damage to the rapeseed pot seedlings during the seedling removal process by passing through the bottom of the seedling tray. It can also complete multiple actions such as ejection, seedling receiving, flipping and delivering seedlings, and conveying and separating seedlings. The machine cost is low. For the special seedling tray, the hook claw can complete the single row of seedling removal in one round trip, and the seedling removal efficiency is high.

[0019] (3) The present invention uses a three-crank slider mechanism to coordinate the seedling tray conveying and rapeseed pot seedling ejection and seedling receiving functions, ensuring the synchronization of conveying and seedling taking operations. Compared with other seedling taking mechanisms, the present invention significantly improves the operation quality and has the advantages of reliable operation and minimal damage to seedling trays and pot seedlings. Attached Figure Description

[0020] Figure 1 A schematic diagram of the rapeseed pot seedling top-out type seedling separation device provided by the present invention;

[0021] Figure 2 A schematic diagram of the support structure provided by the present invention;

[0022] Figure 3 Schematic diagram of the seedling tray loading and positioning mechanism provided by the present invention Figure 1 ;

[0023] Figure 4 Schematic diagram of the seedling tray loading and positioning mechanism provided by the present invention Figure 2 ;

[0024] Figure 5 A schematic diagram of the seedling tray pull-down mechanism provided by the present invention;

[0025] Figure 6 This is a schematic diagram of the transmission system provided by the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the seedling-topping mechanism provided by the present invention;

[0027] Figure 8 Schematic diagram of the seedling receiving mechanism provided by the present invention Figure 1 ;

[0028] Figure 9 Schematic diagram of the seedling receiving mechanism provided by the present invention Figure 2 ;

[0029] Figure 10 This is a schematic diagram of the structure of the seedling receiving frame provided by the present invention;

[0030] Figure 11 This is a schematic diagram of the structure for transporting seedlings provided by the present invention;

[0031] Figure 12 This is a schematic diagram of the pressure plate recovery mechanism provided by the present invention.

[0032] In the diagram: 1 is the support structure; 2 is the seedling tray loading and positioning mechanism; 3 is the seedling tray pull-down mechanism; 4 is the transmission system; 5 is the seedling lifting mechanism; 6 is the seedling receiving mechanism; 7 is the seedling conveying and separating mechanism; 8 is the pressure plate recovery mechanism; 9 is the seedling box support plate; 10 is the support square tube; 11 is the main support rib; 12 is the rear box cover plate; 13 is the main side plate; 14 is the gasket; 15 is the bottom plate; 16 is the rear box side plate; 17 is the front box cover plate; 18 is the support plate; 19 is the rear box bottom plate; 20 is the front box side plate; 21 is the transmission box rear plate; 22 is the front box bottom plate; 23 is the hook shaft support plate; 24 is the transmission box side plate; 25 is the transmission box bottom plate; 26 is the transmission box cover plate; 27 is the recovery support plate; 28 is the seedling box fixing plate; 29 is the small support. 30 is the base plate of the seedling box frame; 31 is seedling box one; 32 is seedling box two; 33 is the compression spring; 34 is the seedling tray pressure plate; 35 is the arc-shaped fixing plate; 36 is the seedling tray; 37 is the bearing seat; 38 is the right hook; 39 is the left hook; 40 is the slide rail one; 41 is the fixing plate; 42 is the pull rod; 43 is the slider one; 44 is the crankshaft; 45 is the bearing one; 46 is the torsion spring; 47 is the connecting rod; 48 is the bearing two; 49 is the crankshaft sprocket; 50 is the chain one; 51 is the small sprocket; 52 is the seedling-pulling shaft; 53 is the motor; 54 is the motor support; 55 is the universal joint; 56 is the drive sprocket; 57 is the bevel gear; 58 is the main drive shaft; 59 is the main sprocket; 60 is the chain two; 61 is the seedling receiving sprocket; 62 is the seedling receiving drive. Shaft; 63 is the seedling drive shaft; 64 is the seedling sprocket; 65 is the conveyor belt drive shaft; 66 is the seedling plate; 67 is the top rod; 68 is the spring plunger; 69 is the fixing plate; 70 is the box-type linear bearing; 71 is the seedling pull rod; 72 is the Y-type connector; 73 is the fish-eye pull rod one; 74 is the screw; 75 is the crank disc; 76 is the horizontal shaft support; 77 is the seedling receiving component; 78 is the seedling receiving shaft; 79 is the flange bearing; 80 is the movable block one; 81 is the linear slide rail limit block; 82 is the slide rail two; 83 is the slider two; 84 is the compression spring; 85 is the movable block two; 86 is the seedling receiving push rod; 87 is the Y-type connector; 88 is the fish-eye pull rod two; 89 is the screw two; 90 is the crank disc two; 91 is the horizontal shaft support two; 92 is the movable block one; Moving block 3; 93 is a face cam; 94 is a rack; 95 is a gear; 96 is a movable clamping pot component; 97 is a fixed clamping pot component; 98 is a seedling receiving guard plate; 99 is a seedling receiving base plate; 100 is a swivel ball; 101 is a seedling receiving frame; 102 is a seedling clamping push rod; 103 is a compression spring 2; 104 is a conveyor support frame 1; 105 is a conveyor belt; 106 is a pressure pot wheel; 107 is a seedling pushing wheel; 108 is a partition plate; 109 is a pressure pot wheel drive motor; 110 is a conveyor support frame 2; 111 is a conveyor belt driven shaft; 112 is a pressure plate; 113 is a pressure plate frame 1; 114 is a pressure plate frame 2; 115 is a recovery slide; 116 is a recovery support plate; 117 is a pressure strip fixing rod; 118 is an inner guide rail of the arc-shaped seedling tray; 119 is a pressure strip. Detailed Implementation

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0035] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0036] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0037] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0038] like Figure 1As shown, this invention provides a rapeseed potted seedling top-out type seedling separating device, comprising: a support structure 1, a seedling tray loading and positioning mechanism 2, a seedling tray pulling-down mechanism 3, a transmission system 4, a seedling top mechanism 5, a seedling receiving mechanism 6, a seedling conveying and separating mechanism 7, and a pressing plate recycling mechanism 8; the seedling tray loading and positioning mechanism 2 is located in the middle of the support structure 1, the seedling tray pulling-down mechanism 3 is located on both sides of the seedling tray loading and positioning mechanism 2, the seedling top mechanism 5 is located inside the support structure 1 and connected to the support structure 1, the seedling receiving mechanism 6 is located below the seedling top mechanism 5 and inside the support structure 1 and connected to the support structure 1, and the seedling conveying and separating mechanism 7... Located below the seedling receiving mechanism 6 and connected to the supporting structure 1, the transmission system 4 is connected to the seedling tray pull-down mechanism 3, the seedling lifting mechanism 5, the seedling receiving mechanism 6, and the seedling conveying and separating mechanism 7. One end of the transmission system 4 is connected to the power input end. The power input drives the seedling tray pull-down mechanism 3 to transport the seedling tray after passing through the transmission system 4. After the seedling tray is transported to the position where the rapeseed pot seedlings are lifted, the seedling lifting mechanism 5 is driven to lift the pot seedlings out of the seedling tray. The transmission system 4 drives the seedling receiving mechanism 6 to catch and clamp the lifted rapeseed pot seedlings from below, and then flips them over and puts them into the seedling conveying and separating mechanism 7 to realize the seedling separation function. The seedling tray with the seedlings removed is recycled to the pressing plate recycling mechanism 8. This invention designs the seedling tray conveying function, seedling lifting function, seedling receiving function, and seedling conveying and separating function to be linked, so that the device can pick up seedlings in an orderly and accurate manner, ensuring efficient seedling picking operation.

[0039] like Figure 2As shown, the support structure includes a seedling box support plate 9, a support square tube 10, a large support rib 11, a rear box cover plate 12, a main side plate 13, a gasket 14, a bottom plate 15, a rear box side plate 16, a front box cover plate 17, a support plate 18, a rear box bottom plate 19, a front box side plate 20, a transmission box rear side plate 21, a front box bottom plate 22, a hook shaft support plate 23, a transmission box side plate 24, a transmission box bottom plate 25, a transmission box cover plate 26, and a recovery support plate 27. The seedling box fixing plate 28, small support ribs 29, and seedling box frame base plate 30 are all included. The base plate 15 serves as a fixing frame. The transmission box base plate 25 is fixedly installed above the base plate 15. The left and right transmission box side plates 24 are symmetrically welded to the transmission box base plate 25. The transmission box cover plate 26 is welded to the two transmission box side plates 24. The hook shaft support plate 23 is symmetrically welded to both sides of the base plate 15. The left and right transmission box rear side plates 21 are connected to the transmission box side plates 24 and the hook shaft support plate 23. Support plates 23 are welded together. The rear box bottom plate 19 and the front box bottom plate 22 are welded to the main side plate 13 and symmetrically installed on the bottom plate 15 by bolts. The front box side plate 20 and the front box cover plate 17 are welded to the front box bottom plate 22 and the main side plate 13 to form the front box body. The rear box bottom plate 19, the rear box side plate 16, and the rear box cover plate 12 are welded to the main side plate 13 to form the rear box body. Support plates 18 are welded between the main side plate 13 and the rear box side plate 16 to ensure structural strength. A large supporting rib 11 is welded between the main side plate 13 and the rear box cover plate 12 to ensure structural strength. A gasket 14 is welded to the bottom end of the supporting square tube 10 and then bolted to the base plate 15. Retractable supporting plates 27 are symmetrically welded to the rear sides of the base plate 15. The seedling box fixing plate 28 is welded to the rear box cover plate 12 and the seedling box frame base plate 30 to form the upper box body. A small supporting rib 29 is welded between the main side plate 13 and the seedling box frame base plate 30 to ensure structural strength. The seedling box fixing plate 28 is bolted to the seedling box frame base plate 30 at the front end and to the gasket 14 on the supporting square tube 10 at the rear end. The aforementioned front and rear boxes, seedling box supporting plate 9, supporting square tube 10, main side plate 13, hook shaft supporting plate 23, and seedling box fixing plate 28 are all symmetrically distributed.

[0040] like Figure 3-4 As shown, the seedling tray loading and positioning mechanism 2 includes a seedling box 31, a seedling box 32, a compression spring 33, a seedling tray pressure plate 34, an arc-shaped fixing plate 35, and a seedling tray 36. The seedling box 31 and the seedling box 32 are connected and fixed in the middle of the two seedling box support plates 9. The compression spring 33 is fitted on one end of the seedling box 32 and the seedling tray pressure plate 34 to provide a pressure plate positioning function. The seedling tray pressure plate 34 and the arc-shaped fixing plate 35 are both fixed on the seedling box fixing plate 28.

[0041] like Figure 5As shown, the seedling tray pull-down mechanism 3 includes a bearing seat 37, a left hook 38, a right hook 39, a slide rail 40, a fixing plate 41, a pull rod 42, a slider 43, a crankshaft 44, a first bearing 45, a torsion spring 46, a connecting rod 47, and a second bearing 48. The slide rail 40 is fixed to the main side plate 13, and the slider 43 is slidably engaged with the slide rail 40. One end of the connecting rod 47 is welded to the fixing plate 41 and fixed to the slider 43 with bolts, and the other end is connected to the first bearing 45. Connected to the right hook 39, the bearing seat 37 fixes the crankshaft 44 to the rear side plate 16 and the main side plate 13 and drives it through the transmission system 4; one end of the connecting rod 47 is sleeved with the crankshaft 44 through the second bearing 48, and the other end of the connecting rod 47 is connected to the pull rod 42 through the bearing, thereby driving the pull rod 42 to move up and down, driving the hook 39 to pull down the seedling tray 36. The torsion spring 46 is connected to the connecting rod 47 and the hook 39 respectively and sleeved on the pull rod 42 to ensure that the hook 39 can always hook the seedling tray 36.

[0042] like Figure 6 As shown, the transmission system includes a crankshaft sprocket 49, chain one 50, small sprocket 51, seedling-pulling shaft 52, motor 53, motor bracket 54, universal joint 55, drive sprocket 56, bevel gear 57, main drive shaft 58, main sprocket 59, chain two 60, seedling-receiving sprocket 62, seedling-receiving drive shaft 61, seedling-lifting drive shaft 63, seedling-lifting sprocket 64, and conveyor belt drive shaft 65. The motor 53 is fixedly mounted on the motor bracket 54. The motor 53 shaft is fitted with a universal joint 55 and connected to the main drive shaft 58. The main drive shaft 58 is mounted on the two side plates 24 of the transmission box via bearing seats. The end sleeve is equipped with a drive sprocket 56, which drives the seedling-pulling shaft 52 and the crank shaft 44 to rotate via a chain 50, a small sprocket 51, and a crank shaft sprocket 49. The seedling-pulling shaft 52 is mounted on the main side plate 13 and the front box side plate 20 via bearing seats. The crank shaft 44 is mounted on the main side plate 13 and the rear box side plate 16 via bearing seats. The bevel gears 57 are symmetrically mounted on the main drive shaft 58 and drive the conveyor belt drive shaft 65 via the bevel gear set. The main sprocket 59 is mounted in the middle of the main drive shaft 58 and is connected to the seedling receiving sprocket 62 and the seedling jacking sprocket 64 via a chain 60, driving the seedling receiving drive shaft 61 and the seedling jacking drive shaft 63.

[0043] like Figure 7As shown, the seedling-lifting mechanism includes a lifting rod 67, a seedling-lifting plate 66, a spring plunger 68, a fixing plate 69, a box-type linear bearing 70, a seedling-lifting pull rod 71, a Y-type connector 72, a fish-eye pull rod 73, a screw 74, a crank disc 75, and a horizontal shaft support 76. Four box-type linear bearings 70 are respectively fixed to the left and right main side plates 13. The seedling-lifting drive shaft 63 is mounted on the transmission housing via bearing seats. Horizontal shaft supports 76 and crank discs 75 are respectively installed at both ends. The horizontal shaft supports 76 are fitted onto the seedling-lifting drive shaft 63 and locked with bolts. The seedling-lifting drive shaft 63 and the crank disc 75 are connected by... The fish-eye pull rod 73 is bolted together. One end of the fish-eye pull rod 73 is connected to the screw 74 on the crank disc 75, and the other end is hinged to the Y-type connector 72. The Y-type connector 72 is connected to the seedling pull rod 71 and drives the seedling pull rod 71 to reciprocate. The seedling pull rod 71 is welded to the fixing plate 69. The fixing plate 69 is connected to the seedling plate 66 by bolts, thereby driving the top rod 67 to reciprocate horizontally. The spring plunger 68 and the top rod 67 are both threadedly connected to the seedling plate 66. The spring plunger 68 is symmetrically installed on the seedling plate 66 and is used to press down the edge of the seedling tray 36 before the seedling is pushed out of the seedling box 31 and the seedling box 32.

[0044] like Figure 8 and Figure 9 As shown, the seedling receiving mechanism includes a seedling receiving component 77, a seedling receiving shaft 78, a flange bearing 79, a first movable block 80, a linear slide rail limiting block 81, a second slide rail 82, a second slider 83, a compression spring 84, a second movable block 85, a seedling receiving push rod 86, a Y-type connector 87, a second fish-eye pull rod 88, a second screw 89, a second crank disc 90, a second horizontal shaft support 91, a third movable block 92, a face cam 93, a rack 94, and a gear 95. Two second slide rails 82 are respectively fixed to the left and right main side plates 13. The second slider 83 cooperates with the second slide rail 82 and is respectively bolted to the first movable block 80, the second movable block 85, and the third movable block 92. Compression springs 84 are connected between the second movable block 85 and the first movable block 80, and between the second movable block 85 and the third movable block 92. The first movable block 80 and the third movable block 92 are respectively connected by flange bearings 79. On both sides of the seedling receiving shaft 78, a gear 95 is installed at one end of the seedling receiving shaft 78. The gear 95 meshes with a rack 94 fixed on the main side plate 13. The seedling receiving component 77 is installed on the seedling receiving shaft 78. The face cam 93 is installed on the movable block 3 92 and contacts the seedling receiving component 77. The seedling receiving drive shaft 61 is installed on the transmission box through a bearing seat. Horizontal shaft support 2 91 and crank disc 2 90 are installed at both ends respectively. Horizontal shaft support 2 91 is sleeved on the seedling receiving drive shaft 61 and clamped to the seedling receiving drive shaft 61 by bolts. It is also connected to the crank disc 2 90 by bolts. One end of the fisheye pull rod 2 88 is connected to the screw 2 89 on the crank disc 2 90, and the other end is hinged to the Y-type connector 87. The Y-type connector 87 is connected to the seedling receiving push rod 86 and drives the movable block 1 80 and movable block 3 92 sleeved on the seedling receiving push rod 86 to drive the seedling receiving shaft 78 to reciprocate. Figure 10As shown, the seedling receiving component 77 includes a movable clamping pot component 96, a fixed clamping pot component 97, a seedling receiving guard plate 98, a seedling receiving base plate 99, a universal ball joint 100, a seedling receiving frame 101, a seedling clamping push rod 102, and a compression spring 103. The seedling receiving frame 101 is fixedly connected to the seedling receiving shaft 78. The seedling receiving guard plate 98 is welded to the seedling receiving frame 101. The seedling receiving base plate 99 is welded above the two seedling receiving frames 101. The seedling clamping push rod 102 passes through the two seedling receiving frames 101 and is slidably connected to the seedling receiving frame 101. Multiple fixed clamping pot components 97 are installed at intervals on the top of the seedling receiving base plate 99. Multiple movable clamping pot components 96 that match the fixed clamping pot components 97 are connected to the top of the seedling clamping push rod 102 through a connecting plate. The compression spring 103 is located between the seedling receiving frame 101 and the connecting plate. The universal ball joint 100 is installed at the end of the seedling clamping push rod 102 and contacts the face cam 93 fixed on the movable block 92.

[0045] When slider 2 83 contacts linear guide rail limit block 81, slider 2 83 stops moving and the seedling receiving shaft stops moving. The seedling receiving push rod 86 continues to move horizontally, compressing spring 84 to provide intermittent time for seedling feeding. A gear 95 is sleeved on the left end of the seedling receiving shaft 78. When the seedling receiving shaft 78 reciprocates, its end gear 95 meshes with rack 94 fixed on main side plate 13, causing seedling receiving component 77 to rotate. When seedling receiving push rod 86 is pulled back, seedling receiving component 77 flips and retracts to feed seedlings. When seedling receiving push rod 86 is pushed forward, seedling receiving component 77 flips to wait for seedling feeding. Universal ball 100 is installed on seedling clamping push rod 1. 02 and contact the face cam 93 fixed on the movable block 3 92. When the seedling receiving component 77 is flipped, the face cam 93 pushes the seedling clamping push rod 102 to drive the movable pot clamping component 96 and the fixed pot clamping component 97 fixed on the seedling receiving base plate 99 to clamp the pot body together. The seedling receiving base plate 99 is welded above the two seedling receiving frames 101. The seedling receiving guard plate 98 is welded to the seedling receiving frame 101. The seedling receiving frame 101 is fixedly connected to the seedling receiving shaft 78. When the seedling receiving shaft 78 rotates to the lowest point of the face cam 93, the seedling clamping push rod 102 releases the pot body under the force of the compression spring 2 103 to complete the seedling release.

[0046] like Figure 11As shown, the seedling conveying and separating mechanism includes a first conveyor support frame 104, a conveyor belt 105, a pressure pot wheel 106, a seedling pulling wheel 107, a partition plate 108, a pressure pot wheel drive motor 109, a second conveyor support frame 110, and a conveyor belt driven shaft 111. The first conveyor support frame 104 is bolted to the base plate 15 to support the seedling conveying and separating mechanism 7. The first conveyor support frame 104 and the second conveyor support frame 110 are connected to the conveyor belt drive shaft 65 and the conveyor belt driven shaft 111 through bearings and provide support. The partition plate 108 is installed between the first conveyor support frame 104 and the second conveyor support frame 110 to isolate the seedlings in the left and right conveyor belts. The pressure pot wheel drive motors 109 are symmetrically installed on both sides of the second conveyor support frame 110. The pressure pot wheel drive motors 109 are connected to the pressure pot wheel 106 to press down the pot body. The seedling pulling wheel 107 is installed at the end of the seedling pulling drive shaft 52 near the pressure pot wheel 106. The seedling-pulling wheel 107 rotates under the drive of the seedling-pulling drive shaft 52 to knock out seedlings and works in conjunction with the pot-pressing wheel 106 to solve the problem of seedlings getting tangled in the pot.

[0047] like Figure 12 As shown, the pressure plate recycling mechanism includes a pressure plate 112, a pressure plate frame one 113, a pressure plate frame two 114, a recycling slide 115, a recycling support plate 116, a pressure strip fixing rod 117, an arc-shaped seedling tray inner guide rail 118, and a pressure strip 119. The four pressure plates 112 are respectively fixed on the pressure plate frame one 113 and the pressure plate frame two 114 to pre-press the seedling tray 36 to prevent the seedling tray 36 from detaching from the seedling box one 31 and the seedling box two 32 during the seedling lifting process. The pressure plate frame one 113 and the pressure plate frame two 114 are both fixed on the two seedling box support plates 9. The recycling slide 115 is symmetrically installed on the seedling box fixing plate 28 and cooperates with the pressure strip 119 for recycling the seedling tray 36. The pressure strip 119 is sleeved on the pressure strip fixing rod 117. The two ends of the pressure strip fixing rod 117 are installed on the recycling support plate 116. The seedling tray inner guide rail 118 is fixed to the arc-shaped fixing plate 35 by bolts for lateral positioning of the seedling tray 36.

[0048] This invention employs a crank-slider intermittent conveying method to transport seedling trays. During operation, the crank shaft drives the hook to move up and down, pulling the seedling tray to the top seedling position. Then, a positioning mechanism presses the tray to maintain accurate seedling placement. Therefore, this invention can precisely position the seedling tray and pot, allowing for precise seedling removal. The crank-slider method effectively avoids damage to the rapeseed pots during seedling removal by lifting the bottom of the tray. It can also complete complex actions such as seedling removal, receiving, flipping, and transporting seedlings. The machine has low cost; for a dedicated seedling tray, the hook can complete single-row seedling removal in one round trip, resulting in high efficiency. This invention uses a three-crank-slider mechanism to coordinate the seedling tray conveying and the rapeseed pot seedling removal and receiving functions, ensuring synchronization of the conveying and seedling removal operations. Compared with other seedling removal mechanisms, this invention significantly improves operational quality and has advantages such as reliable operation and minimal damage to the seedling trays and pots.

[0049] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A seedling-seedling-retrieving device for rapeseed seedlings in pots, characterized in that, include: The structure comprises a support structure (1), a seedling tray loading and positioning mechanism (2), a seedling tray pull-down mechanism (3), a transmission system (4), a seedling lifting mechanism (5), a seedling receiving mechanism (6), a seedling conveying and separating mechanism (7), and a pressure plate recycling mechanism (8). The seedling tray loading and positioning mechanism (2) is located in the middle of the support structure (1), the seedling tray pull-down mechanism (3) is located on both sides of the seedling tray loading and positioning mechanism (2), the seedling lifting mechanism (5) is located inside the support structure (1) and connected to the support structure (1), the seedling receiving mechanism (6) is located below the seedling lifting mechanism (5) and inside the support structure (1) and connected to the support structure (1), and the seedling conveying and separating mechanism (7) is located below the seedling lifting mechanism (5) and inside the support structure (1) and connected to the support structure (1). The transmission system (4) is connected to the support structure (1) below and to the seedling tray pull-down mechanism (3), the seedling top mechanism (5), the seedling receiving mechanism (6) and the seedling conveying mechanism (7) respectively. One end of the transmission system (4) is connected to the power input end. The power input drives the seedling tray pull-down mechanism (3) to convey the seedling tray after passing through the transmission system (4). After the seedling tray is conveyed to the rapeseed pot seedling top position, the seedling top mechanism (5) is driven to push out the pot seedling in the seedling tray. The transmission system (4) drives the seedling receiving mechanism (6) to catch and clamp the rapeseed pot seedling that has been pushed out from below. Then, it is flipped and placed into the seedling conveying mechanism (7) to realize the seedling separation function. The seedling tray with the seedlings removed is recycled to the pressure plate recycling mechanism (8). The supporting structure includes a seedling box support plate (9), a support square tube (10), a large support rib (11), a rear box cover plate (12), a main side plate (13), a gasket (14), a bottom plate (15), a rear box side plate (16), a front box cover plate (17), a support plate (18), a rear box bottom plate (19), a front box side plate (20), a transmission box rear side plate (21), a front box bottom plate (22), a hook shaft support plate (23), a transmission box side plate (24), a transmission box bottom plate (25), and a transmission box cover plate. (26), recovery support plate (27), seedling box fixing plate (28), small support rib (29) and seedling box frame bottom plate (30), the transmission box bottom plate (25) is fixedly installed above the bottom plate (15), the left and right transmission box side plates (24) are symmetrically welded to the transmission box bottom plate (25), the transmission box cover plate (26) is welded to the two transmission box side plates (24), the hook claw shaft support plate (23) is symmetrically welded to both sides of the bottom plate (15), the left and right transmission box rear side plates (21) and the transmission box side plates ( 24) and hook claw shaft support plate (23) are welded together. The rear box bottom plate (19) and the front box bottom plate (22) are welded to the main side plate (13) and symmetrically installed on the bottom plate (15) by bolts. The front box side plate (20) and the front box cover plate (17) are welded together with the front box bottom plate (22) and the main side plate (13) to form the front box body. The rear box bottom plate (19), the rear box side plate (16) and the rear box cover plate (12) are welded together with the main side plate (13) to form the rear box body. A support plate (18) is welded between the main side plate (13) and the rear box cover plate (12). A large support rib (11) is welded between the main side plate (13) and the rear box cover plate (12). A gasket (14) is welded to the bottom end of the support square tube (10) and then fixed to the bottom plate (15) with bolts. The recovery support plate (27) is symmetrically welded to the rear sides of the bottom plate (15). The seedling box fixing plate (28) is welded to the rear box cover plate (12) and the seedling box frame bottom plate (30) to form the upper box body. A small support rib (29) is welded between the main side plate (13) and the seedling box frame bottom plate (30). The seedling tray loading and positioning mechanism (2) includes a seedling box one (31), a seedling box two (32), a compression spring (33), a seedling tray pressure plate (34), an arc fixing plate (35), and a seedling tray (36). The seedling box one (31) and the seedling box two (32) are connected and fixed in the middle of the seedling box support plates (9) on both sides. The compression spring (33) is fitted on one end of the seedling box two (32) and the seedling tray pressure plate (34) to provide the positioning function of the pressure plate. The seedling tray pressure plate (34) and the arc fixing plate (35) are both fixed on the seedling box fixing plate (28). The seedling tray pull-down mechanism (3) includes a bearing seat (37), a left hook (38), a right hook (39), a slide rail (40), a fixing plate (41), a pull rod (42), a slider (43), a crankshaft (44), a first bearing (45), a torsion spring (46), a connecting rod (47), and a second bearing (48). The slide rail (40) is fixed on the main side plate (13), and the slider (43) slides in cooperation with the slide rail (40). One end of the connecting rod (47) is welded to the fixing plate (41) and fixed to the slider (43) with bolts, and the other end is connected to the first bearing (45). The crankshaft (44) is connected to the right hook (39), and the bearing seat (37) fixes the crankshaft (44) on the rear side plate (16) and the main side plate (13) and drives it through the transmission system (4); one end of the connecting rod (47) is connected to the crankshaft (44) through the second bearing (48), and the other end of the connecting rod (47) is connected to the pull rod (42) through the bearing, thereby driving the pull rod (42) to move up and down, driving the hook to complete the pull down of the seedling tray (36). The torsion spring (46) is connected to the connecting rod (47) and the hook (39) respectively and is sleeved on the pull rod (42) to ensure that the hook can always hook the seedling tray (36). The transmission system includes a crankshaft sprocket (49), chain one (50), small sprocket (51), seedling-pulling shaft (52), motor (53), motor bracket (54), universal joint (55), drive sprocket (56), bevel gear (57), main drive shaft (58), main sprocket (59), chain two (60), seedling-receiving sprocket (62), seedling-receiving drive shaft (61), seedling-topping drive shaft (63), seedling-topping sprocket (64), and conveyor belt drive shaft (65). The motor (53) is fixedly mounted on the motor bracket (54). The motor (53) shaft is connected to the main drive shaft (58) by a universal joint (55). The main drive shaft (58) is mounted on the two side plates (24) of the transmission box through bearing seats. Both ends are fitted with drive sprockets (56), which drive the seedling-pulling shaft (52) and crank shaft (44) to rotate via chain one (50), small sprocket (51), and crank shaft sprocket (49). The seedling-pulling shaft (52) is mounted on the main side plate (13) and the front box side plate (20) via bearing seats. The crank shaft (44) is mounted on the main side plate (13) and the rear box side plate (16) via bearing seats. The bevel gears (57) are symmetrically mounted on the main drive shaft (58) and drive the conveyor belt drive shaft (65) via the bevel gear set. The main sprocket (59) is mounted in the middle of the main drive shaft (58) and is connected to the seedling receiving sprocket (62) and the seedling top sprocket (64) via chain two (60) to drive the seedling receiving drive shaft (61) and the seedling top drive shaft (63). The seedling raising mechanism includes a seedling raising rod (67), a seedling raising plate (66), a spring plunger (68), a fixing plate (69), a box-type linear bearing (70), a seedling raising pull rod (71), a Y-type connector (72), a fish-eye pull rod (73), a screw (74), a crank disc (75), and a horizontal shaft support (76). The four box-type linear bearings (70) are respectively fixed on the left and right main side plates (13). The seedling raising drive shaft (63) is installed on the transmission box through the bearing seat. Horizontal shaft supports (76) and crank discs (75) are installed at both ends respectively. One end of the fish-eye pull rod (73) is connected to the screw on the crank disc (75). 74) Connected to the other end, and hinged to the Y-type connector (72). The Y-type connector (72) is connected to the top seedling pull rod (71) and drives the top seedling pull rod (71) to reciprocate. The top seedling pull rod (71) is welded to the fixing plate (69). The fixing plate (69) is connected to the top seedling plate (66) by bolts, thereby driving the top rod (67) to reciprocate horizontally. The spring plunger (68) and the top rod (67) are both threadedly connected to the top seedling plate (66). The spring plunger (68) is symmetrically installed on the top seedling plate (66) to press down the edge of the seedling tray (36) before the seedling is topped to prevent the seedling tray (36) from being pushed out of the seedling box one (31) and the seedling box two (32).

2. The rapeseed pot seedling top-out type seedling separating device as described in claim 1, characterized in that, The seedling receiving mechanism includes a seedling receiving component (77), a seedling receiving shaft (78), a flange bearing (79), a movable block one (80), a linear slide rail limit block (81), a slide rail two (82), a slider two (83), a compression spring (84), a movable block two (85), a seedling receiving push rod (86), a Y-type connector (87), a fish-eye pull rod two (88), a screw two (89), a crank disc two (90), a horizontal shaft support two (91), a movable block three (92), a face cam (93), and a rack (94). The slide rails (82) are fixed on the left and right main side plates (13) respectively. The slider (83) cooperates with the slide rails (82) and is fixed to the movable block (80), movable block (85), and movable block (92) respectively by bolts. There are compression springs (84) between movable block (85) and movable block (80) and between movable block (85) and movable block (92). Movable block (80) and movable block (92) are respectively connected by flange bearings (7). 9) Connected to both sides of the seedling receiving shaft (78), a gear (95) is installed at one end of the seedling receiving shaft (78), the gear (95) meshes with the rack (94) fixed on the main side plate (13), the seedling receiving component (77) is installed on the seedling receiving shaft (78), the face cam (93) is installed on the movable block three (92) and contacts the seedling receiving component (77), the seedling receiving drive shaft (61) is installed on the transmission box through the bearing seat, and horizontal shaft support two (91) and crank disc two (90) are installed at both ends respectively. The second horizontal shaft support (91) is fitted onto the seedling drive shaft (61) and clamped to the seedling drive shaft (61) by bolts. It is also connected to the second crank disc (90) by bolts. One end of the second fish-eye pull rod (88) is connected to the second screw (89) on the second crank disc (90), and the other end is hinged to the Y-type connector (87). The Y-type connector (87) is connected to the seedling push rod (86) and drives the movable block one (80) and movable block three (92) fitted onto the seedling push rod (86) to drive the seedling shaft (78) to reciprocate.

3. The rapeseed pot seedling top-out type seedling separating device as described in claim 2, characterized in that, The seedling receiving component (77) includes a movable clamping pot (96), a fixed clamping pot (97), a seedling receiving guard plate (98), a seedling receiving base plate (99), a universal ball (100), a seedling receiving frame (101), a seedling clamping push rod (102), and a compression spring (103). The seedling receiving frame (101) is fixedly connected to the seedling receiving shaft (78), the seedling receiving guard plate (98) is welded to the seedling receiving frame (101), the seedling receiving base plate (99) is welded above the two seedling receiving frames (101), and the seedling clamping push rod (102) passes through the two seedling receiving shafts. The frame (101) is slidably connected to the seedling receiving frame (101). Multiple fixed clamping pot pieces (97) are installed at intervals on the top of the seedling receiving base plate (99). Multiple movable clamping pot pieces (96) that match the fixed clamping pot pieces (97) are connected to the top of the clamping push rod (102) through the connecting plate. The second compression spring (103) is set between the seedling receiving frame (101) and the connecting plate. The universal ball (100) is installed at the end of the clamping push rod (102) and contacts the face cam (93) fixed on the movable block three (92).

4. The rapeseed pot seedling top-out type seedling separating device as described in claim 3, characterized in that, The seedling conveying and separating mechanism includes a first conveyor support frame (104), a conveyor belt (105), a pressure pot wheel (106), a seedling separating wheel (107), a partition plate (108), a pressure pot wheel drive motor (109), a second conveyor support frame (110), and a driven shaft of the conveyor belt (111). The first conveyor support frame (104) is bolted to the base plate (15) to support the seedling conveying and separating mechanism (7). The first conveyor support frame (104) and the second conveyor support frame (110) are connected to the drive shaft of the conveyor belt via bearings. (65) is connected to and supports the driven shaft (111) of the conveyor belt. A partition (108) is installed between the first conveyor support frame (104) and the second conveyor support frame (110) to isolate the seedlings in the left and right conveyor belts. The second conveyor support frame (110) is symmetrically equipped with the pressure wheel drive motor (109) on both sides. The pressure wheel drive motor (109) is connected to the pressure wheel (106) to press down the pot. The seedling pulling wheel (107) is installed at the end of the seedling pulling drive shaft (52) near the pressure wheel (106).

5. The rapeseed pot seedling top-out type seedling separating device as described in claim 4, characterized in that, The pressure plate recovery mechanism includes a pressure plate (112), a pressure plate frame one (113), a pressure plate frame two (114), a recovery slide (115), a recovery support plate (116), a pressure strip fixing rod (117), an arc-shaped seedling tray inner guide rail (118), and a pressure strip (119). The four pressure plates (112) are respectively fixed on the pressure plate frame one (113) and the pressure plate frame two (114) to pre-press the seedling tray (36) to prevent the seedling tray (36) from detaching from the seedling box one (31) and the seedling box two (32) during the seedling lifting process. The first (113) and the second (114) pressure plate are both fixed on the two seedling box support plates (9). The recovery slide (115) is symmetrically installed on the seedling box fixing plate (28) and cooperates with the pressure strip (119) for the recovery of the seedling tray (36). The pressure strip (119) is sleeved on the pressure strip fixing rod (117). The two ends of the pressure strip fixing rod (117) are installed on the recovery support plate (116). The inner guide rail (118) of the seedling tray is fixed on the arc fixing plate (35) by bolts for the lateral positioning of the seedling tray (36).

Images