Agricultural seedling tray crown block

Abstract

The utility model discloses an agricultural seedling tray crown block, and belongs to the technical field of agricultural machinery. The agricultural seedling tray crown block comprises a tray collecting and placing assembly, and the tray collecting and placing assembly is arranged on a truss and reciprocates in the length direction of the truss. The row frame conveys the seedling trays, the seedling trays are conveyed to the tray collecting and placing assembly or conveyed away from the tray collecting and placing assembly, and the tray collecting and placing assembly places or collects the seedling trays in the moving process; the device further comprises a moving mechanism which drives the two trusses to move. The tray collecting and placing assembly reciprocates on the truss and is matched with the two tray feeding and discharging mechanisms which are symmetrically arranged, the tray feeding and discharging mechanisms on the two sides are controlled to ascend or descend through the suspension mechanism, and after a row of seedling trays are placed, the tray feeding and discharging mechanism on one side is ascended, and the tray feeding and discharging mechanism on the other side is descended. According to the seedling tray placing device, the next row of seedling trays can be placed immediately without moving the empty tray collecting and placing assembly to the initial position, the seedling trays are placed while the tray loading and unloading mechanism reciprocates, and the seedling tray placing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, and more specifically, to an agricultural seedling tray overhead crane. Background Technique

[0002] With the development of agricultural production mechanization in China, automated production lines are now mostly used for rice seedling raising to improve the quality of seedlings. First, it goes through an automated seedling raising production line to complete soil covering, sowing, and soil covering in the seedling trays. Then, it is placed in a dark room for centralized heat and moisture preservation to emerge. After the emergence is neat in the dark room, it is then manually transported to a hardening-off greenhouse or paddy field for secondary seedling raising. Traditional seedling tray transportation mostly uses manual handling methods. For example, the seedling trays are transported from the cultivation room to the paddy field by a transport cart, and then manually carried from the edge of the ridge to the paddy field for hydroponic growth. Such a handling mode has a high labor intensity, requires the operator to walk back and forth between the ridge and the paddy field, not only has low work efficiency, but also has high operating costs. At the same time, the seedlings are easily damaged during manual handling, affecting the growth of the seedlings.

[0003] After retrieval, Chinese patent document CN111924487A discloses an automatic seedling tray placing device for a seedling tray conveyor, which is horizontally arranged on the seedling tray conveyor and includes a tray separating mechanism, a tray turning mechanism, a seedling tray placing mechanism, a traveling mechanism, and a control module. The tray separating mechanism is arranged above the conveyor belt of the conveyor, and the tray turning mechanisms are respectively arranged on both sides of the tray separating mechanism. The tray separating mechanism distributes the seedling trays on the conveyor belt to the tray turning mechanisms. The seedling tray placing mechanism is connected to the tray turning mechanism, and after the tray turning mechanism turns over, the seedling tray slides onto the seedling tray placing mechanism. The traveling mechanism is electrically connected to the seedling tray placing mechanism. When the seedling tray slides to the set position of the seedling tray placing mechanism, the traveling mechanism is triggered to act by the control module, and the tray separating mechanism together with the tray turning mechanism and the seedling tray placing mechanism move forward, and the seedling tray slides into the paddy field to achieve automatic seedling tray placing. However, the device of this application can only perform single-direction seedling tray placing. After placing one row of seedling trays, it needs to return to the starting point to place the seedling trays again, resulting in low seedling tray placing efficiency. At the same time, since the seedling tray placing mechanism straddles the conveyor, there will inevitably be gaps where the seedling trays cannot be placed during seedling tray placing, reducing the land utilization rate. This application also cannot collect the seedling trays, and the placed seedling trays need to be manually collected, still requiring a large amount of manual participation. Content of the Utility Model

[0004] 1. Technical Problem to be Solved by the Utility Model

[0005] In view of the fact that manual handling is required for placing seedling trays in the field, and the existing seedling tray placing machines also have problems such as waste of land utilization rate, low efficiency, and still requiring a large amount of manual labor, the utility model provides an agricultural seedling tray overhead crane, which can save labor while efficiently placing and collecting seedling trays, and at the same time avoid waste of land.

[0006] 2. Technical Solution

[0007] To achieve the above object, the technical solution provided by the present utility model is as follows:

[0008] An agricultural seedling tray overhead crane of the present utility model includes a seedling tray receiving and arranging assembly, and the seedling tray receiving and arranging assembly is arranged on a gantry and reciprocates along the length direction of the gantry; the gantry conveys the seedling trays, conveys the seedling trays onto the seedling tray receiving and arranging assembly or conveys them away from the seedling tray receiving and arranging assembly, and the seedling tray receiving and arranging assembly arranges or retracts the seedling trays during the movement; it further includes a moving mechanism, and the moving mechanism drives the two gantries to move.

[0009] As a further improvement of the present utility model, the gantry includes a first gantry and a second gantry. A conveyor belt is arranged on the first gantry for conveying the seedling trays; no conveyor belt is arranged on the second gantry for bearing weight; the center of gravity of the seedling tray receiving and arranging assembly is arranged close to the second gantry.

[0010] As a further improvement of the present utility model, the seedling tray receiving and arranging assembly includes a tray separating mechanism and an upper and lower tray mechanism. One upper and lower tray mechanism is arranged on each side of the tray separating mechanism, and the upper and lower tray mechanisms are symmetrically arranged along the tray separating mechanism.

[0011] As a further improvement of the present utility model, one end of the upper and lower tray mechanism is movably connected to the tray separating mechanism, and the other end is arranged close to the ground; the upper and lower tray mechanism rotates with the connection point with the tray separating mechanism as the axis.

[0012] As a further improvement of the present utility model, a guiding tray is arranged at the entrance of the tray separating mechanism, and the guiding tray is connected to the gantry through a transfer machine; the transfer machine drives the movement of the seedling trays.

[0013] As a further improvement of the present utility model, the guiding tray is detachably connected to the tray separating mechanism.

[0014] As a further improvement of the present utility model, a tray pushing mechanism is arranged on the tray separating mechanism. The tray pushing mechanism includes a pushing member, and the pushing member rotates forward or backward under the drive of a drive mechanism to push the seedling trays to the upper and lower tray mechanisms on both sides.

[0015] As a further improvement of the present utility model, the upper and lower tray mechanisms include a conveyor belt, and the conveyor belt drives the seedling trays thereon to move; a transition plate is arranged along the lower edge of the upper and lower tray mechanisms, and the end of the transition plate is parallel to the ground.

[0016] As a further improvement of the present utility model, a baffle is arranged on the side of the upper and lower tray mechanisms.

[0017] As a further improvement of the present utility model, a suspension mechanism is arranged on the upper part of the tray separating mechanism. The suspension mechanism is connected to the two upper and lower tray mechanisms, and the suspension mechanism controls the raising or lowering of the upper and lower tray mechanisms.

[0018] As a further improvement of the present utility model, a traveling mechanism is arranged at the lower part of the tray separating mechanism, and the traveling mechanism drives the tray separating mechanism to move along the traveling frame.

[0019] As a further improvement of the present utility model, the first traveling frame includes a fixed tray conveying section, and a movable tray conveying section is arranged at the seedling tray input end of the fixed tray conveying section. The movable tray conveying section is movably connected to the fixed tray conveying section.

[0020] As a further improvement of the present utility model, the moving mechanism includes a plurality of parallel guide rails, and the guide rails are arranged at intervals along the length direction of the traveling frame; the traveling frame moves on the guide rails through a moving frame and moving wheels.

[0021] 3. Beneficial effects

[0022] Adopting the technical solution provided by the present utility model, compared with the existing well-known technologies, the following remarkable effects are achieved:

[0023] (1) In view of the problems of low tray placing efficiency and the need for a large amount of manual participation in the existing tray placing machines, a kind of agricultural seedling tray overhead crane of the present utility model mounts the tray collecting and placing assembly between two traveling frames, which can avoid the obstruction of the traveling frames, cover the seedling trays completely, and reduce the waste of field land. When it is necessary to place the trays at intervals, the moving distance of the tray collecting and placing assembly can also be adjusted, so as to leave intervals for convenient adjustment.

[0024] (2) For a kind of agricultural seedling tray overhead crane of the present utility model, the tray collecting and placing assembly reciprocates on the traveling frame, and is matched with two upper and lower tray mechanisms arranged symmetrically. The lifting or lowering of the upper and lower tray mechanisms on both sides is controlled by a suspension mechanism. When the placement of a row of seedling trays is completed, the upper and lower tray mechanism on one side is lifted, and the upper and lower tray mechanism on the other side is lowered. Without moving the empty tray collecting and placing assembly to the initial position, the placement of the next row of seedling trays can be immediately carried out. While the upper and lower tray mechanisms reciprocate, the seedling trays are placed, improving the tray placing efficiency.

[0025] (3) For a kind of agricultural seedling tray overhead crane of the present utility model, a guiding tray is arranged to guide the seedling trays to the tray separating mechanism. The guiding tray is detachably connected to the tray separating mechanism, and can be disassembled and reassembled according to the moving direction of the tray collecting and placing assembly, so that the seedling trays transported from different directions can be guided to the tray separating mechanism; during tray collection, the conveying direction of the seedling trays can also be adjusted, which is convenient for adjustment.

[0026] (4) An agricultural seedling tray overhead crane of the present utility model is provided with a tray pushing mechanism on the tray separating mechanism. Compared with the traditional flipping type tray separation, the tray pushing mechanism of the present utility model drives the pushing member to rotate forward or backward by means of a motor, so as to be able to push the seedling tray onto the upper and lower tray mechanisms on both sides; since the seedling tray is pushed, it avoids the dropping of the soil in the seedling tray caused by the sudden stop of the flipping type tray separation.

[0027] (5) An agricultural seedling tray overhead crane of the present utility model is provided with a transition plate at the end of the upper and lower tray mechanism. When placing the tray, the transition plate enables the seedling tray to fall smoothly to the ground. The end of the transition plate is set in a style parallel to the ground. When collecting the tray, it can lift the seedling tray, enabling the seedling tray to smoothly enter the driving belt part. At the same time, the end of the transition plate is parallel to the ground, and when the tray collecting and placing assembly moves, the transition plate will not insert into the soil, avoiding the damage to the land.

[0028] (6) An agricultural seedling tray overhead crane of the present utility model, multiple guide rails arranged at intervals can evenly distribute the load and also ensure the smooth movement of the gantry. The present utility model drives the gantry to move by means of moving wheels, further ensuring smooth movement. The movable tray conveying section at the end of the gantry can rotate, facilitating the docking with other equipment for transporting the seedling tray.

[0029] (7) An agricultural seedling tray overhead crane of the present utility model is provided with two gantries. The first gantry is used for installing a conveyor belt to convey the seedling tray, and the second gantry is used for bearing the load. The center of gravity of the tray collecting and placing assembly is close to the second gantry. Large mass components such as motors are arranged on one side of the second gantry, dividing the functions of the two gantries, avoiding the problem that the first gantry is damaged by heavy objects, resulting in unsmooth or even dropping of the seedling tray during transportation. Description of the Drawings

[0030] Figure 1 is the overall structural schematic diagram of the device of the present utility model;

[0031] Figure 2 is the top view of the overall structure of the device of the present utility model;

[0032] Figure 3 is Figure 1 the enlarged view of the structure at A in

[0033] Figure 4 is the structural schematic diagram of the tray collecting and placing assembly in the present utility model;

[0034] Figure 5 is the structural schematic diagram of the tray separating mechanism in the present utility model;

[0035] Figure 6 is the structural schematic diagram of the upper and lower tray mechanism in the present utility model;

[0036] Figure 7 is Figure 1Enlarged view of the structure at position B in the [Chinese context].

[0037] Description of the reference numerals in the figure:

[0038] 1. First row support; 11. Support; 12. Movable conveyor section; 13. Fixed conveyor section; 14. Hanging frame;

[0039] 2. Second row support; 3. Tray collecting and arranging assembly; 31. Transition machine; 32. Guide disk; 33. Disk separating mechanism; 331. Guide mounting frame; 332. Suspension mounting frame; 333. First driving section; 334. Second driving section; 335. Pushing member; 336. Driving mechanism; 337. Walking mounting frame; 338. Suspension mechanism; 339. Walking mechanism;

[0040] 34. Upper and lower disk mechanism; 341. Frame; 342. Driving shaft; 343. Conveyor belt; 344. Baffle; 345. Transition plate;

[0041] 4. Moving mechanism; 41. Guide rail; 42. Moving frame; 43. Moving wheel. Detailed implementation manners

[0042] In order to make the above objects, features and advantages of the utility model more obvious and understandable, the following detailed description of the specific implementation manners of the utility model is given in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed below.

[0043] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0044] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0045] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0046] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath", and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0047] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0048] Embodiment 1

[0049] Combined with Figures 1 - 7 , in view of the problem that the existing seedling tray placing machine has low placing efficiency and requires a large amount of manual participation, a kind of agricultural seedling tray overhead crane in this embodiment has the receiving and placing component 3 installed between two row frames, which can avoid the obstruction of the row frames, cover the seedling trays, reduce the waste of field land. When it is necessary to place at intervals, the moving distance of the receiving and placing component 3 can also be adjusted, so as to leave an interval for convenient adjustment. The specific introduction is as follows:

[0050] Combined with Figures 1 - 2 , an agricultural seedling tray overhead crane according to this embodiment includes a seedling tray collecting and placing assembly 3 and a gantry structure. In this embodiment, the seedling tray collecting and placing assembly 3 is arranged on the gantry structure and reciprocates along the length direction of the gantry structure. During the movement, the seedling trays with seedlings are sequentially placed in the field. When the overhead crane of the seedling tray in this embodiment is in use, the seedling tray collecting and placing assembly 3 moves from one end to the other end. After a row of seedling trays is filled, it moves horizontally for a certain distance, and then moves back from the other end to the initial end to complete a cycle. Then the seedling tray collecting and placing assembly 3 moves horizontally for another distance and starts a new cycle until the entire paddy field is filled with seedling trays. The same operation is performed when collecting the trays in this embodiment.

[0051] In this embodiment, the gantry structure is composed of two gantries. In order to enable the seedling tray collecting and placing assembly 3 mounted on the gantry structure to closely place the seedling trays horizontally during tray placement without leaving too large a gap, this embodiment changes the overhead crane originally supported by one gantry to be supported by two gantries for the seedling tray collecting and placing assembly 3. The two gantries are respectively supported on both sides of the seedling tray collecting and placing assembly 3, and walking mechanisms 339 are arranged at the lower parts on both sides of the seedling tray collecting and placing assembly 3. The walking mechanisms 339 are used to enable the seedling tray collecting and placing assembly 3 to move on both gantries at the same time. After a vertical row of seedling trays is filled, the seedling tray collecting and placing assembly 3, together with the gantry structure, moves horizontally by a distance equal to the width of the seedling tray collecting and placing assembly 3, so as to realize the close placement of the seedling trays in the next vertical row and the previous vertical row, thereby reducing the waste of the paddy field caused by too large a gap. When a relatively large gap needs to be left between the seedling trays, the horizontal movement distance of the seedling tray collecting and placing assembly 3 and the gantry structure can also be adjusted, so as to adjust the distance between the seedling trays in each vertical row, enabling the overhead crane of the seedling tray in this embodiment to conveniently adjust the distance between the seedling trays in each vertical row without manually repositioning the placed seedling trays.

[0052] In this embodiment, the gantry structure includes a first gantry 1 and a second gantry 2. The first gantry 1 and the second gantry 2 are respectively arranged on both lateral sides of the seedling tray receiving and placing assembly 3. The seedling tray receiving and placing assembly 3 is simultaneously mounted on the first gantry 1 and the second gantry 2 and moves on the first gantry 1 and the second gantry 2 through the traveling mechanism 339. The traveling mechanism 339 of the seedling tray receiving and placing assembly 3 can adopt various structures, such as sliders, gears, screw nuts, etc. As long as the traveling mechanism 339 can drive the seedling tray receiving and placing assembly 3 to move. Specifically in this embodiment, the traveling mechanism 339 is a roller, and the roller is driven to rotate by a motor. At the same time, tracks are provided on both the first gantry 1 and the second gantry 2. The roller structure of the traveling mechanism 339 is the same as the traveling wheel structure on a train. Grooves are opened on the circumference of the roller, and the grooves are engaged with the tracks on the first gantry 1 and the second gantry 2, and the seedling tray receiving and placing assembly 3 is driven to move on the first gantry 1 and the second gantry 2 through friction. In this embodiment, multiple rollers are provided to bear the mass of the seedling tray receiving and placing assembly 3. The motor can be directly connected to the roller or connected to the roller through a speed reducer. In this embodiment, the first gantry 1 and the second gantry 2 are arranged in parallel to ensure the stability of the movement of the seedling tray receiving and placing assembly 3.

[0053] On the first gantry 1, a conveyor belt is provided in this embodiment for conveying the seedling trays, while no conveyor belt is provided on the second gantry 2. The purpose of doing this is to distinguish the functions of the two side gantries. While the first gantry 1 is used for conveying the seedling trays, it only bears part of the weight of the seedling tray receiving and placing assembly 3, and the second gantry 2 bears the main weight of the seedling tray receiving and placing assembly 3. Therefore, the first gantry 1 can use a gantry with a square cross-section, so that there is enough space on the upper part of the first gantry 1 to set the conveyor belt for conveying the seedling trays. And the load-bearing second gantry 2 uses a gantry with a triangular cross-section, and its structure is more stable and can bear more weight. In addition, the seedling trays and the soil and seedlings in the seedling trays also have a certain weight. In this embodiment, the second gantry 2 is used to bear most of the mass of the seedling tray receiving and placing assembly 3, which can also balance the masses of the first gantry 1 and the second gantry 2 and reduce the risk of damage to the gantry structure.

[0054] Combined with Figure 7, in this embodiment, the first row frame 1 includes a bracket 11, on which a seedling tray conveyor belt is provided. The seedling tray conveyor belt in this embodiment is a roller belt structure, and a plurality of groups of rollers are arranged along the length direction of the bracket 11. The belt is tensionally installed on the rollers. When the motor drives the rollers to rotate, the belt starts to move under the drive of the rollers, thereby driving the seedling tray on the belt to move along the length direction of the bracket 11. The belt in this embodiment is two narrow belts, which are arranged on both sides of the seedling tray, thereby reducing the mass of the belt and also avoiding the accumulation of soil on the belt when soil falls out of the seedling tray. The belt in this embodiment can also be replaced with other drive structures such as a chain. In this embodiment, the seedling tray conveyor belt is divided into a fixed tray section 13 and a movable tray section 12. The fixed tray section 13 and the movable tray section 12 are connected, and at the connection, the movable tray section 12 can rotate around the connection. Since the height of the bracket 11 is basically fixed, the height of the fixed tray section 13 provided thereon is also fixed. When the height of a transport vehicle such as a truck used to transport the seedling tray to the edge of the field is flush with the height of the fixed tray section 13, the seedling tray can be directly transported onto the fixed tray section 13. However, when the height of the transport vehicle is not the same as that of the fixed tray section 13, the seedling tray cannot be transported onto the fixed tray section 13. Therefore, in this embodiment, a rotatable movable tray section 12 is provided at the end of the fixed tray section 13. When the height of the transport vehicle is flush with the height of the fixed tray section 13, the movable tray section 12 is adjusted to be horizontal with the fixed tray section 13. When the height of the transport vehicle is not flush with the height of the fixed tray section 13, the movable tray section 12 is adjusted to tilt upward or downward, so that the movable end of the adjusted movable tray section 12 is connected to the transport vehicle, and the seedling tray is transported onto the fixed tray section 13 by using a belt conveyor. Generally speaking, the transport vehicle is generally higher than the fixed tray section 13. In this embodiment, the transport vehicle is also higher than the fixed tray section 13. Therefore, in this embodiment, the movable tray section 12 is adjusted to tilt upward. This embodiment also provides a suspension bracket 14 on the movable tray section 12. The suspension bracket 14 is provided with holes, and the steel wire rope passes through the holes and is connected to the suspension bracket 14. The adjustment of the movable tray section 12 can be realized by driving the winding mechanism to wind and unwind the steel wire rope through a motor.

[0055] In this embodiment, a moving mechanism 4 is provided at the lower part of the first row frame 1 and the second row frame 2. The moving mechanism 4 drives the first row frame 1, the second row frame 2 and the seedling receiving and placing plate assembly 3 to move horizontally. In this embodiment, the horizontal movement of the first row frame 1 and the second row frame 2 is carried out synchronously, so as to ensure that the seedling receiving and placing plate assembly 3 can be stably mounted on the first row frame 1 and the second row frame 2, avoiding the dropping of the seedling receiving and placing plate assembly 3. In order to enable the first row frame 1 and the second row frame 2 to move horizontally, several moving mechanisms 4 are arranged in the length direction of the first row frame 1 and the second row frame 2, and are arranged at intervals along the length direction of the first row frame 1 and the second row frame 2. The moving mechanism 4 can be selected from a variety of different moving mechanisms, such as a moving trolley, a roller movement or a suspension mechanism and a gantry, etc. In this embodiment, a combination of a track and a roller is used. Three horizontal guide rails 41 are arranged at intervals on the first row frame 1 and the second row frame 2, and are respectively arranged at the two ends and the middle position of the first row frame 1 and the second row frame 2. The guide rail 41 is perpendicular to the first row frame 1 and the second row frame 2, and the length of the guide rail 41 is equal to the horizontal length of the seedling field, so that the first row frame 1, the second row frame 2 and the seedling receiving and placing plate assembly 3 can move horizontally in the whole seedling field. A moving frame 42 is arranged at the lower part of the first row frame 1 and the second row frame 2 for supporting the first row frame 1 and the second row frame 2. A moving wheel 43 is installed at the lower part of the moving frame 42, and the moving wheel 43 is engaged with the guide rail 41. The moving wheel 43 is driven by a motor to rotate, so as to drive the first row frame 1 and the second row frame 2 to move on the guide rail 41.

[0056] Combined with Figure 3, the receiving and arranging tray assembly 3 of this embodiment includes a tray separating mechanism 33 and an upper and lower tray mechanism 34. One upper and lower tray mechanism 34 is arranged on each side of the tray separating mechanism 33. The upper and lower tray mechanisms 34 are symmetrically arranged along the tray separating mechanism 33. One end of the upper and lower tray mechanism 34 is movably connected to the tray separating mechanism 33, and the other end is arranged close to the ground; the upper and lower tray mechanism 34 rotates around the connection point with the tray separating mechanism 33 as the axis. In this embodiment, the receiving and arranging tray assembly 3 is erected on the first row frame 1 and the second row frame 2. Among them, both the tray separating mechanism 33 and the upper and lower tray mechanism 34 are arranged between the first row frame 1 and the second row frame 2. In order to enable the receiving and arranging tray assembly 3 to closely arrange the seedling trays, the upper and lower tray mechanism 34 of this embodiment extends downward and is closer to the ground than the first row frame 1 and the second row frame 2, so that the first row frame 1 and the second row frame 2 will not block the placement of the seedling trays. And in order to facilitate the transportation of the seedling trays from the first row frame 1 to the tray separating mechanism 33 without causing violent shaking of the seedling trays, the height of the tray separating mechanism 33 of this embodiment is approximately the same as that of the first row frame 1. Specifically, the tray separating mechanism 33 in this embodiment is set to be slightly higher than the first row frame 1. In this embodiment, in order to enable the seedling trays to smoothly transition to the tray separating mechanism 33, a transition machine 31 and a guiding tray 32 are also arranged between the first row frame 1 and the tray separating mechanism 33 to transport the seedling trays to the tray separating mechanism 33. The arrangement of the transition machine 31 and the guiding tray 32 enables the seedling trays to smoothly transition along the belt and roller structures on the transition machine 31 and the guiding tray 32, so that the seedling trays can stably move between the first row frame 1 and the tray separating mechanism 33, avoiding the soil and seedlings in the seedling trays from falling due to shaking. In this embodiment, the guiding tray 32 is of an arc structure, one end is detachably connected to the tray separating mechanism 33, and the other end is connected to the transition machine 31. The other end of the transition machine 31 is connected to the seedling tray conveyor belt on the first row frame 1. In this embodiment, the guiding tray 32 and the tray separating mechanism 33 are arranged on the same horizontal plane, while the transition machine 31 is inclined. Since the guiding tray 32 and the tray separating mechanism 33 are higher than the first row frame 1, in order to enable the seedling trays to be smoothly transported to the tray separating mechanism 33, a roller belt transmission structure is arranged on the transition machine 31 of this embodiment to provide power for the seedling trays. The guiding tray 32 of this embodiment is arranged to change the transportation direction of the seedling trays, changing the longitudinal movement of the seedling trays to lateral movement. The guiding tray 32 of this embodiment is detachably connected to the tray separating mechanism 33, and the direction of the guiding tray 32 can be conveniently adjusted according to the incoming direction of the seedling trays. When the seedling trays are transported from Figure 3 left to right in Figure 3 , the guiding tray 32 faces Figure 3 left in Figure 3 ; when the seedling trays are transported from

[0057] right to left in Figure 4In this embodiment, a tray-pushing mechanism is provided on the tray-dividing mechanism 33, which pushes the seedling tray transported by the guide tray 32 to the upper and lower tray mechanism 34, and then the upper and lower tray mechanism 34 transports the seedling tray to the ground along the inclined slope. The tray-dividing mechanism 33 of this embodiment includes a guide mounting frame 331, which is used to support the guide tray 32, so that the guide tray 32 is connected to the tray-dividing mechanism 33 and moves with the tray-dividing mechanism 33. It also includes a suspension mounting frame 332, on which a suspension mechanism 338 is provided. In this embodiment, the suspension mechanism 338 is a rope winding machine, which is driven to rotate by a motor gear. A steel wire rope is wound on the suspension mechanism 338, and the other end is connected to one end of the upper and lower tray mechanism 34 and the ground. The suspension mechanism 338 can adjust the distance between the upper and lower tray mechanism 34 and the ground by winding or loosening the steel wire rope. Since in this embodiment, both sides of the plate dividing mechanism 33 are provided with upper and lower plate mechanisms 34, and when the plate is placed and closed, only the upper and lower plate mechanisms 34 on one side need to work, therefore, the suspension mechanism 338 of this embodiment can also wind the wire rope so that the upper and lower plate mechanisms 34 on one side are put away and the upper and lower plate mechanisms 34 on the other side are put away. In this embodiment, two suspension mechanisms 338 can be provided to connect one upper and lower plate mechanism 34 respectively, or only one upper and lower plate mechanism 34 can be provided to connect the two upper and lower plate mechanisms 34 at the same time, and the wire ropes of the two upper and lower plate mechanisms 34 only need to be staggered during installation (i.e., the wire ropes are connected when one is tilted and the other is put away), when the suspension mechanism 338 is rotated to put away the upper and lower plate mechanisms 34 on one side, the upper and lower plate mechanisms 34 on the other side are put away accordingly, and when the suspension mechanism 338 is reversed, the upper and lower plate mechanisms 34 on one side are also put away and the upper and lower plate mechanisms 34 on the other side are put away.

[0058] Combination Figure 5, in this embodiment, the tray separating mechanism 33 further includes a driving section, which is connected to the guiding tray 32 and conveys the seedling trays conveyed by the guiding tray 32 to the other end of the tray separating mechanism 33, so that a plurality of seedling trays are arranged on the tray separating mechanism 33. In this embodiment, a blocking structure can be provided on the driving section to separate a plurality of seedling trays according to the required spacing between the seedling trays; or the blocking structure can be not provided, so that all the seedling trays are closely arranged. In this embodiment, the driving section is divided into a first driving section 333 and a second driving section 334. First, the first driving section 333 conveys the seedling trays from the guiding tray 32 to the driving section, and then the second driving section 334 conveys the seedling trays to the other end. In this embodiment, a tray pushing mechanism is provided above the driving section. The tray pushing mechanism of this embodiment includes a pushing member 335 and a driving mechanism 336 for driving the pushing member 335 to move. In this embodiment, the pushing member 335 is a long rod extending along the length direction of the tray separating mechanism 33, and the length of the long rod is equal to the length of the tray separating mechanism 33, so as to be able to push all the seedling trays on the tray separating mechanism 33 down. The pushing member 335 is arranged on the upper part of the tray separating mechanism 33 and on the side where the upper and lower tray mechanism 34 is installed on the tray separating mechanism 33. The distance between the long rod and the driving section is less than the height of the seedling tray. In this embodiment, the driving mechanism 336 is a gear-chain structure. In this embodiment, two gears are provided, on which chains are arranged, and two pushing members 335 are arranged at intervals on the chains. The distance between the two pushing members 335 is the width of the tray separating mechanism 33. In this embodiment, the motor drives the chain to rotate through the gears, so that the two pushing members 335 move, and push the seedling trays on the tray separating mechanism 33 towards the upper and lower tray mechanism 34. The motor of this embodiment can rotate forward and backward to push the seedling trays towards the upper and lower tray mechanisms 34 on both sides. The tray separating mechanism 33 of this embodiment is further provided with a traveling mechanism 339, which is installed on the tray separating mechanism 33 through a traveling mounting frame 337. The traveling mechanism 339 is a track wheel, which is stuck into the tracks provided on the first row frame 1 and the second row frame 2, and drives the tray separating mechanism 33 to move on the first row frame 1 and the second row frame 2.

[0059] Combined with Figure 6, in this embodiment, the upper and lower tray mechanism 34 includes a frame 341 which is a square frame and consists of side plates on both sides and multiple cross beams connecting the two side plates. In this embodiment, the multiple cross beams are arranged at intervals. Specifically, in this implementation, a cross beam is provided at each of the two ends and the middle of the two side plates. Among them, the cross beams at both ends are not directly arranged at the ends of the side plates, but are spaced from the ends by a certain distance and are arranged close to the ends. In this embodiment, multiple groups of conveyor belts 343 are provided on the frame 341. The conveyor belt 343 can be a chain, a belt or other devices capable of forming a conveying structure. In this embodiment, a driving roller and a driven roller are respectively arranged at both ends of the frame 341 and are driven to rotate by a driving shaft 342, so as to drive the conveyor belt 343 installed on the driving roller and the driven roller to move, and drive the seedling tray to move on the upper and lower tray mechanism 34. In this embodiment, multiple narrow conveyor belts 343 are provided and the multiple conveyor belts 343 are arranged at intervals, so that when the soil on the seedling tray spills out, it can directly fall to the ground through the gaps and will not cause excessive weight on the conveyor belt 343. In order to prevent the conveyor belt 343 from being too long and unable to be tensioned, in this embodiment, while a tensioning mechanism is provided, a supporting structure is also provided on each cross beam to support the conveyor belt 343. In this embodiment, baffles 344 are provided on the side plates on both sides, and the baffles 344 can prevent the seedling tray from falling. In this embodiment, multiple transition plates 345 are provided at the lower end of the upper and lower tray mechanism 34 (i.e., the end in contact with the ground). The ends of the transition plates 345 are parallel to the ground and can be pressed by the soil on the ground, so as to ensure that the ends of the transition plates 345 will not be inserted into the soil. In this embodiment, the transition plates 345 are provided at the ends of the upper and lower tray mechanism 34. When placing the trays, the transition plates 345 enable the seedling trays to fall smoothly to the ground. The ends of the transition plates 345 are set in a style parallel to the ground. When collecting the trays, the transition plates 345 can lift the seedling trays, enabling the seedling trays to smoothly enter the driving belt part. At the same time, the ends of the transition plates 345 are parallel to the ground. When the tray collecting and placing assembly 3 moves, the transition plates 345 will not be inserted into the soil, avoiding damage to the land. In this embodiment, an induction device is also provided at the lower part of the upper and lower tray mechanism 34 close to the ground. When the seedling tray reaches the position of the induction device, devices such as an infrared sensor or a pressure plate sensor are used to receive signals and drive the tray collecting and placing assembly 3 to move to place the seedling trays properly.

[0060] For the overhead crane in this embodiment, when arranging the seedling trays, the seedling trays are conveyed to the tray arranging and collecting assembly 3 via the first row frame 1. The transfer machine 31 and the guiding tray 32 change the direction of the seedling trays and transport them into the tray dividing mechanism 33. At this time, the upper and lower tray mechanism 34 on one side of the tray dividing mechanism 33 is lowered, and the other side is raised. The tray pushing mechanism pushes the seedling trays onto the upper and lower tray mechanism 34, and the upper and lower tray mechanism 34 conveys the seedling trays to the ground to complete the tray arrangement. At this time, the tray arranging and collecting assembly 3 moves synchronously along the first row frame 1. When collecting the trays, the tray arranging and collecting assembly 3 moves along the first row frame 1, and the transition plate 345 tilts the seedling trays so that the seedling trays can smoothly enter the conveyor belt 343. The conveyor belt 343 conveys the seedling trays into the tray dividing mechanism 33, and the driving section conveys the seedling trays to the first row frame 1 after changing the direction through the transfer machine 31 and the guiding tray 32, and they are conveyed away by the seedling tray conveyor belt on the first row frame 1.

[0061] The above has schematically described the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the creation of the present invention, design similar structural modes and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. An agricultural seedling tray overhead crane, characterized in that: The invention comprises a collecting and swinging plate assembly (3), wherein the collecting and swinging plate assembly (3) is arranged on a row frame and reciprocates along the length direction of the row frame; the row frame conveys the seedling trays, conveys the seedling trays to the collecting and swinging plate assembly (3) or conveys them away from the collecting and swinging plate assembly (3), and the collecting and swinging plate assembly (3) places or collects the seedling trays during the movement; and also comprises a moving mechanism (4), wherein the moving mechanism (4) drives the two row frames to move.

2. The agricultural seedling tray overhead crane according to claim 1, characterized in that: The row frame comprises a first row frame (1) and a second row frame (2); the first row frame (1) is provided with a conveyor belt for conveying seedling trays; the second row frame (2) is not provided with a conveyor belt for bearing weight; the center of gravity of the collecting and swinging plate assembly (3) is arranged close to the second row frame (2).

3. The agricultural seedling tray overhead crane according to claim 1, characterized in that: The collecting and swinging plate assembly (3) comprises a plate separation mechanism (33) and an upper and lower plate mechanism (34). An upper and lower plate mechanism (34) is arranged on each side of the plate separation mechanism (33). The upper and lower plate mechanisms (34) are symmetrically arranged along the plate separation mechanism (33).

4. The agricultural seedling tray overhead crane according to claim 3, characterized in that: One end of the upper and lower plate mechanism (34) is movably connected to the plate separation mechanism (33), and the other end is arranged close to the ground; the upper and lower plate mechanism (34) rotates with the connection with the plate separation mechanism (33) as the axis.

5. The agricultural seedling tray overhead crane according to claim 3, characterized in that: A guide plate (32) is arranged at the entrance of the tray separation mechanism (33), and the guide plate (32) is connected to the row frame through a transition machine (31); the transition machine (31) drives the seedling tray to move.

6. The agricultural seedling tray overhead crane according to claim 5, characterized in that: The guide plate (32) is detachably connected to the plate separation mechanism (33).

7. The agricultural seedling tray overhead crane according to claim 3, characterized in that: The tray-pushing mechanism is arranged on the tray-dividing mechanism (33), and the tray-pushing mechanism comprises a pushing member (335). The pushing member (335) rotates forward or reversely under the drive of the driving mechanism (336) to push the seedling tray to the upper and lower tray mechanisms (34) on both sides.

8. The agricultural seedling tray overhead crane according to claim 3, characterized in that: The upper and lower disk mechanism (34) comprises a conveyor belt (343), and the conveyor belt (343) drives the seedling tray thereon to move; a transition plate (345) is arranged at the lower edge of the upper and lower disk mechanism (34), and the end of the transition plate (345) is parallel to the ground.

9. The agricultural seedling tray overhead crane according to claim 3, characterized in that: A baffle (344) is provided on the side of the upper and lower disk mechanism (34).

10. The agricultural seedling tray overhead crane according to claim 4, characterized in that: A suspension mechanism (338) is arranged on the upper part of the plate separation mechanism (33), and the suspension mechanism (338) is connected to the two upper and lower plate mechanisms (34). The suspension mechanism (338) controls the upper and lower plate mechanisms (34) to rise or fall.

11. The agricultural seedling tray overhead crane according to claim 3, characterized in that: A walking mechanism (339) is arranged at the lower part of the tray-separating mechanism (33), and the walking mechanism (339) drives the tray-separating mechanism (33) to move along the frame.

12. The agricultural seedling tray overhead crane according to claim 2, characterized in that: The first row frame (1) comprises a fixed tray section (13), a movable tray section (12) is arranged at the seedling tray input end of the fixed tray section (13), and the movable tray section (12) is movably connected to the fixed tray section (13).

13. The agricultural seedling tray overhead crane according to claim 1, characterized in that: The moving mechanism (4) comprises a plurality of parallel guide rails (41), wherein the guide rails (41) are arranged at intervals along the length direction of the rack; the rack moves on the guide rails (41) via a moving frame (42) and moving wheels (43).

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