Seedling tray placing device

Abstract

The utility model discloses a seedling tray placing device which comprises a tray placing vehicle body, a tray conveying mechanism, a transverse tray conveying structure and a longitudinal tray conveying mechanism, the transverse tray conveying mechanism comprises a first transverse bearing frame, a stopping piece and a tray pushing structure, the first transverse bearing frame can bear at least two seedling trays, and the stopping piece is arranged at the end, away from the tray conveying mechanism, of the first transverse bearing frame; the tray pushing structure pushes the seedling tray to move backwards; the longitudinal tray conveying mechanism comprises at least one longitudinal bearing frame, at least one first conveying belt, at least two first transmission belt wheels, at least two first mounting shafts and at least one first driving piece, and the longitudinal bearing frame is arranged on the rear side of the first transverse bearing frame and obliquely extends downwards; the two first transmission belt wheels sleeve the two first mounting shafts in a one-to-one correspondence manner and can rotate relative to the longitudinal bearing frame, the first transmission belt sleeves the two first transmission belt wheels, and the first driving part is in driving connection with one of the two first transmission belt wheels; automatic plate placing is achieved, the labor intensity of workers is reduced, and efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural machinery technical field, concretely relates to a seedling tray placing device. BACKGROUND

[0002] In the rice seedling raising process, after the hard disk seedling raising assembly line is used to sow the bottom soil, sow seeds and cover soil, the seedling tray should be stacked and then put into the dark room for darkening and germination, and after germination, it is put into the field (or greenhouse) for seedling raising management, and the process is usually completed by manual placing of the seedling tray. UTILITARIAN CONTENT

[0003] The utility model discloses a seedling tray placing device, which aims to solve the above problems.

[0004] To achieve the above object, the utility model provides a seedling tray placing device, which comprises:

[0005] The seedling tray placing device comprises a tray conveying mechanism, a tray placing mechanism and a tray placing mechanism driving device.

[0006] The tray conveying mechanism is arranged on the tray placing vehicle body and is used to convey the seedling tray along the left-right direction of the tray placing vehicle body.

[0007] The tray placing mechanism comprises a first transverse bearing frame, a stopper and a tray pushing structure.

[0008] The longitudinal plate conveying mechanism comprises at least one longitudinal bearing frame, at least one first conveying belt, at least two first driving pulleys, at least two first mounting shafts and at least one first driving member, the longitudinal bearing frame is arranged on the rear side of the first transverse bearing frame and extends downwardly and obliquely, the two first mounting shafts are arranged on the longitudinal bearing frame and spaced apart along the extending direction of the longitudinal bearing frame, and each of the first mounting shafts extends along the left-right direction, the two first driving pulleys are correspondingly sleeved on the two first mounting shafts and can rotate relative to the longitudinal bearing frame, the first conveying belt is sleeved on the two first driving pulleys, the first driving member is drivingly connected with one of the two first driving pulleys to drive the first driving pulleys to drive the first conveying belt to rotate relative to the longitudinal bearing frame, so that the seedling plate falling from the first transverse bearing frame is forced to move downwardly.

[0009] Optionally, the plate pushing structure is arranged on the front side of the first transverse bearing frame and comprises a pushing plate and a second driving member, the pushing plate extends along the front-rear direction of the plate turning vehicle body, and the second driving member is drivingly connected with the pushing plate to drive the pushing plate to move along the front-rear direction and push the seedling plate on the first transverse bearing frame to move rearwardly onto the first conveying belt.

[0010] Optionally, the plate pushing structure further comprises a controller and a timer, the controller is electrically connected with the second driving member and the timer to control the second driving member to drive the pushing plate to move along the front-rear direction according to the timing interval of the timer.

[0011] Optionally, the seedling plate turning device further comprises a support frame, the support frame is arranged on the front side of the first transverse bearing frame, and the second driving member is arranged on the support frame.

[0012] Optionally, the first transverse bearing frame comprises a support frame and a plurality of rotating shafts, the rotating shafts are arranged in the support frame and spaced apart along the left-right direction, and each of the rotating shafts extends along the front-rear direction of the plate turning vehicle body and can rotate relative to the support frame.

[0013] Optionally, the included angle between the longitudinal bearing frame and the first transverse bearing frame is greater than or equal to 20° and less than or equal to 30°.

[0014] Optionally, one of the two first mounting shafts is a driving shaft, and the driving shaft is rotatably mounted on the longitudinal bearing frame.

[0015] The longitudinal plate conveying mechanism further comprises a transmission structure, the transmission structure comprises a driving sprocket, a transmission sprocket and a chain, the transmission shaft is rotatably installed on the longitudinal bearing frame, the transmission shaft is provided with the transmission sprocket, the driving sprocket is arranged on one side of the transmission sprocket in the front-back direction or the up-down direction, the chain is sleeved outside the driving sprocket and the transmission sprocket, and the first driving member is in driving connection with the driving sprocket, so as to drive the driving sprocket to rotate, so that the driving sprocket drives the transmission sprocket to rotate through the chain.

[0016] Optionally, the plate placing vehicle body comprises a mounting frame, four wheels and a third driving member, two of the four wheels are arranged on the mounting frame and are distributed in the left-right direction and are in driving connection with at least one third driving member, and the other two of the four wheels are arranged at the tail end of the longitudinal bearing frame.

[0017] The first transverse bearing frame is arranged on the mounting frame.

[0018] The plate placing device further comprises a supporting plate, the supporting plate is arranged on the rear side of the longitudinal bearing frame and extends downwardly and obliquely.

[0019] Optionally, the angle between the supporting plate and the longitudinal bearing frame is the same as the angle between the longitudinal bearing frame and the first transverse bearing frame.

[0020] Optionally, the plate conveying mechanism comprises a second transverse bearing frame, at least one second conveying belt, at least two second transmission pulleys, at least two second mounting shafts and at least one fourth driving member, the second transverse bearing frame extends in the left-right direction, the two second mounting shafts are arranged on the second transverse bearing frame in the left-right direction and extend in the front-rear direction of the plate placing vehicle body, the two second transmission pulleys are correspondingly sleeved on the two second mounting shafts and are rotatable relative to the second transverse bearing frame, the second conveying belt is sleeved outside the two second transmission pulleys, and the fourth driving member is arranged on the second transverse bearing frame and is in driving connection with one of the two second transmission pulleys, so as to drive the second transmission pulleys to drive the second conveying belt to rotate relative to the second transverse bearing frame, so that the seedling plate on the second conveying belt is conveyed to the first transverse bearing frame.

[0021] In the technical scheme of the utility model, the plurality of seedling plates are conveyed to the ground in two rows (or three rows or more rows) along the left-right direction through the plate conveying mechanism, the transverse plate conveying mechanism and the longitudinal plate conveying mechanism, mechanical automatic placing of the seedling plates is realized, the labor intensity is greatly reduced, and the placing efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments or prior art description. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in these drawings without creative labor.

[0023] Figure 1 The structure diagram of an embodiment of the seedling tray placing device provided by the present application.

[0024] Explanation of reference numerals:

[0025] Reference Name Reference Name 100 Tray placing device 312 Rotating shaft 1 Tray placing vehicle body 32 Stopper 11 Mounting frame 33 Tray pushing structure 12 Wheel 331 Pushing plate 2 Tray conveying mechanism 4 Longitudinal tray conveying mechanism 21 Second transverse bearing frame 41 Longitudinal bearing frame 22 Second conveying belt 42 First conveying belt 23 Second mounting shaft 43 First drive pulley 3 Transverse tray conveying mechanism 44 First mounting shaft 31 First transverse bearing frame 5 Supporting plate 311 Supporting frame 200 Tray

[0026] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0029] In addition, if the present application embodiments involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes A scheme, or B scheme, or A and B schemes. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0030] In the rice seedling raising process, the hard disk is used to raise the seedling pipeline to sow the soil-seedling-covering process, and then the seedling is stacked and entered into the dark room for darkening and germination. After germination, it enters the field (or greenhouse) for seedling management. Usually, this process is completed by manual disc placement. This process is primitive and inefficient, and relies on a large amount of manual labor and high-intensity labor to complete.

[0031] Therefore, the utility model provides a seedling tray disc placement device 100, Figure 1 The utility model provides a seedling tray disc placement device 100 embodiment.

[0032] Please refer to Figure 1 The seedling tray disc placement device 100 includes a disc placement vehicle body 1, a disc conveying mechanism 2, a horizontal disc conveying mechanism 3 and a longitudinal disc conveying mechanism 4. The disc conveying mechanism 2 is arranged on the disc placement vehicle body 1 and is used to convey the seedling tray 200 along the left-right direction of the disc placement vehicle body 1. The horizontal disc conveying mechanism 3 includes a first horizontal bearing frame 31, a stop piece 32 and a disc pushing structure 33. The first horizontal bearing frame 31 is arranged on the disc placement vehicle body 1 and is located on one side of the disc conveying mechanism 2 in the left-right direction and extends along the left-right direction. It is used to carry the seedling tray 200 conveyed by the disc conveying mechanism 2. The first horizontal bearing frame 31 can carry at least two seedling trays 200 placed along the length direction in sequence. The stop piece 32 is arranged at one end of the first horizontal bearing frame 31 away from the disc conveying mechanism 2 in the left-right direction. The disc pushing structure 33 is arranged on the disc placement vehicle body 1 and is used to push the seedling tray 200 on the first horizontal bearing frame 31 to move backward. The longitudinal disc conveying mechanism includes at least one longitudinal bearing frame 41, at least one first conveying belt 42, at least two first transmission pulleys 43, at least two first mounting shafts 44 and at least one first driving piece. The longitudinal bearing frame 41 is arranged on the rear side of the first horizontal bearing frame 31 and extends downwardly and obliquely. The two first mounting shafts 44 are distributed in the extension direction of the longitudinal bearing frame 41 and extend along the left-right direction. The two first transmission pulleys 43 are correspondingly sleeved on the two first mounting shafts 44 and can rotate relative to the longitudinal bearing frame 41. The first conveying belt 42 is sleeved on the two first transmission pulleys 43. The first driving piece is drivingly connected with one of the two first transmission pulleys 43 to drive the first transmission pulleys 43 and the first conveying belt 42 to rotate relative to the longitudinal bearing frame 41, so that the seedling tray 200 falling from the first horizontal bearing frame 31 moves downwardly under the force.

[0033] In the technical scheme of the utility model, multiple seedling trays 200 are sequentially transported to the ground along the left-right direction in two rows (or three rows or more rows) by the conveying disc mechanism 2, the horizontal disc conveying mechanism 3 and the vertical disc conveying mechanism 4, mechanical automatic disc placing is realized, manual labor intensity is greatly reduced, and disc placing efficiency is improved.

[0034] It should be noted that, in the utility model, the seedling tray 200 is placed in two rows or three rows or more rows along the left-right direction, which is determined according to the length of the first horizontal carrier 31, that is, when the first horizontal carrier 31 can only carry two seedling trays 200 along the length direction, the seedling tray placing device 100 realizes two-row placing, and when the first horizontal carrier 31 can carry three seedling trays 200 along the length direction, the seedling tray placing device 100 realizes three-row placing.

[0035] It should also be noted that, in the utility model, the width (that is, the length in the left-right direction) of the vertical carrier 41 is greater than or equal to the length of the first horizontal carrier 31.

[0036] More specifically, the disc placing process of the seedling tray placing device 100 is described in detail by taking the example that the first horizontal carrier 31 can only carry two seedling trays 200 along the length direction: first, the first seedling tray 200 is conveyed to the first horizontal carrier 31 by the conveying disc mechanism 2, then the second seedling tray 200 is conveyed by the conveying disc mechanism 2, and in the conveying process of the second seedling tray 200, the first seedling tray 200 stops moving when it is conveyed to the first horizontal carrier 31, until the second seedling tray 200 is conveyed to the first horizontal carrier 31 and abuts against the first seedling tray 200, then the first seedling tray 200 is pushed to move close to the stop piece 32 under the action of the conveying disc mechanism 2, and when the first seedling tray 200 abuts against the stop piece 32, the second seedling tray 200 is separated from the first horizontal carrier 31 and placed on the first horizontal carrier 31 side by side with the first seedling tray 200, then the disc pushing structure 33 simultaneously pushes the first seedling tray 200 and the second seedling tray 200 to move backward, so that the two seedling trays 200 are separated from the first horizontal carrier 31 and fall onto the first conveying belt 42, and the two seedling trays 200 continue to move downward simultaneously under the action of the first conveying belt 42, until they fall onto the ground simultaneously. After the first two seedling trays 200 are pushed to the first conveying belt 42 by the disc pushing structure 33, the following two seedling trays 200 can continue to be conveyed by the conveying disc mechanism 2, and after the following multiple seedling trays 200 are conveyed in this way, the following two seedling trays 200 push the front seedling trays 200 to continue to fall, at the same time, the disc placing vehicle 1 moves forward, so that the seedling trays 200 on the first conveying belt 42 are sequentially separated from the first conveying belt 42 and completely fall onto the ground, and disc placing is completed.

[0037] Specifically, please refer to Figure 1 , the push plate structure 33 is arranged on the front side of the first transverse support frame 31, comprising a push plate 331 and a second driving member, the push plate 331 is arranged along the left-right direction, and the second driving member is drivingly connected with the push plate 331 to drive the push plate 331 to move along the front-rear direction of the disc car body 1, so as to push the seedling tray 200 on the first transverse support frame 31 to move rearward to the first conveying belt 42.

[0038] More specifically, in an embodiment of the utility model, the second driving member is an electric push rod.

[0039] Further, the push plate structure 33 further comprises a controller and a timer, the controller is electrically connected with the second driving member and the timer, so as to control the second driving member to drive the push plate 331 to move along the front-rear direction according to the timing interval of the timer, that is, to control the working state of the second driving member according to the preset interval time, so as to ensure that the whole disc process is completed smoothly.

[0040] It should be noted that the setting of the preset interval time needs to consider the conveying efficiency of the disc conveying mechanism 2 and the conveying efficiency of the first conveying belt 42.

[0041] Specifically, the seedling tray disc device 100 further comprises a support frame, the support frame is arranged on the front side of the first transverse support frame 31, and the second driving member is arranged on the support frame. More specifically, the connection mode of the second driving member and the support frame is not limited, which can be welding, clamping, threaded connection and the like.

[0042] Specifically, in an embodiment of the utility model, the second driving member is an electric push rod.

[0043] Specifically, please refer to Figure 1 , the first transverse support frame 31 comprises a support frame 311 and a plurality of rotating shafts 312, a plurality of rotating shafts 312 are arranged in the support frame 311 along the left-right direction, and each rotating shaft 312 is arranged along the front-rear direction of the disc car body 1 and can rotate around the axis of the support frame 311. In this way, the first seedling tray 200 is conveniently forced to move.

[0044] Specifically, the included angle between the longitudinal support frame 41 and the first transverse support frame 31 is greater than or equal to 20 ° , and less than or equal to 30°, so as to facilitate the downward movement of the seedling tray 200. More specifically, in an embodiment of the utility model, the included angle between the longitudinal support frame 41 and the first transverse support frame 31 is 23°.

[0045] Specifically, please refer to Figure 1 One of the two first mounting shafts 44 is a transmission shaft, which is rotatably mounted on the longitudinal carrier 41; the longitudinal disc conveying mechanism 4 further comprises a transmission structure, which comprises a driving sprocket, a transmission sprocket and a chain, the transmission shaft is rotatably mounted on the longitudinal carrier 41, the transmission shaft is sleeved with the transmission sprocket, the driving sprocket is arranged on one side of the transmission sprocket in the front-rear direction or the up-down direction, the chain is sleeved outside the driving sprocket and the transmission sprocket, and the first driving member is drivingly connected with the driving sprocket to drive the driving sprocket to rotate, so that the driving sprocket drives the transmission sprocket to rotate through the chain. In this way, the transmission sprocket drives the transmission shaft to rotate, the first transmission pulley 43 sleeved on the transmission shaft also rotates, and in turn drives the first conveying belt 42 to rotate, so as to drive the seedling tray 200 on the first conveying belt 42 to move downward to the ground to complete the disc conveying.

[0046] Further, in an embodiment of the present application, the first driving member is a direct current motor.

[0047] Specifically, in an embodiment of the present application, the first conveying belt 42 is provided with a plurality of first conveying belts 42, which are arranged in the left-right direction at intervals, and each seedling tray 200 is driven by two first conveying belts 42. More specifically, the first conveying belt 42 is a triangular belt.

[0048] Specifically, please refer to Figure 1 The disc conveying vehicle body 1 comprises a mounting frame 11, four wheels 12 and a third driving member, two of the four wheels 12 are arranged on the mounting frame 11 and are arranged in the left-right direction at intervals, and are drivingly connected with at least one third driving member, and the other two of the four wheels 12 are arranged at the tail end of the longitudinal carrier 41; the first transverse carrier 31 is arranged on the mounting frame 11; the seedling tray disc conveying device 100 further comprises a supporting plate 5, which is arranged on the rear side of the longitudinal carrier 41 and extends downwardly and obliquely. In this way, the seedling tray 200 can be compactly transferred from the longitudinal carrier 41 to the ground for disc conveying, so as to avoid damage to the seedling tray 200. In addition, the four wheels 12 can be used for walking in relatively muddy and rainy weather.

[0049] It needs to be explained that, in an embodiment of the utility model, two third driving members are arranged, and the two third driving members are in one-to-one corresponding driving connection with the two wheels 12 arranged on the mounting frame 11. In this way, when the output power of the two third driving members is the same, the swing tray vehicle body 1 travels in a straight line, and when the output power of the two third driving members is different, the swing tray vehicle body 1 travels in a turn, that is, travels to the left or to the right.

[0050] It also needs to be explained that, in an embodiment of the utility model, the traveling speed of the swing tray vehicle body 1 is 5 m / min, so that the swing tray 200 is compact, and dislocation is prevented, and the overall swing tray efficiency is affected.

[0051] Further, the included angle between the supporting plate 5 and the longitudinal bearing frame 41 is the same as the included angle between the longitudinal bearing frame 41 and the first transverse bearing frame 31, so that the swing tray 200 is compactly landed.

[0052] More specifically, based on the above-mentioned embodiment that the included angle between the longitudinal bearing frame 41 and the first transverse bearing frame 31 is 23°, the included angle between the supporting plate 5 and the longitudinal bearing frame 41 is 23°.

[0053] Specifically, please refer to Figure 1 The tray conveying mechanism 2 comprises a second transverse bearing frame 21, at least one second conveying belt 22, at least two second transmission pulleys, at least two second mounting shafts 23 and at least one fourth driving member. The second transverse bearing frame 21 extends along the left-right direction. The two second mounting shafts 23 are arranged on the second transverse bearing frame 21 in the left-right direction and extend along the front-rear direction of the swing tray vehicle body 1. The two second transmission pulleys are correspondingly sleeved on the two second mounting shafts 23 and can rotate relative to the second transverse bearing frame 21. The second conveying belt 22 is sleeved outside the two second transmission pulleys. The fourth driving member is arranged on the second transverse bearing frame 21 and is in driving connection with one of the two second transmission pulleys, so as to drive the second transmission pulleys to drive the second conveying belt 22 to rotate relative to the second transverse bearing frame 21, so that the swing tray 200 on the second conveying belt 22 is conveyed to the first transverse bearing frame 31.

[0054] More specifically, the tray conveying mechanism 2 further comprises a transmission structure, which is basically the same as the transmission structure described above, and the driving connection mode of the fourth driving member is basically the same as the driving connection mode of the first driving member described above, which will not be described one by one.

[0055] It needs to be explained that, in an embodiment of the utility model, the fourth driving member is a driving motor.

[0056] It also needs to be explained that in the utility model, the seedling tray 200 can be placed on the second conveying belt 22 in turn by manual mode, and can also be placed on the second conveying belt 22 in turn by mechanical arm and other mechanical automation modes.

[0057] Specifically, the tray mechanism 2 further comprises a placing rack, the placing rack is arranged on the rear side of the second transverse bearing frame 21, and is used for placing a plurality of seedling trays 200 stacked in the up-down direction; in this way, the seedling trays 200 on the placing rack can be taken by manual or mechanical arm and other modes and placed on the second conveying belt 22 in turn during the tray arranging process.

[0058] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation, direct / indirect application in other related technical fields under the utility model concept of the utility model, and the contents of the utility model specification and drawings are included in the patent protection range of the utility model.

Claims

1. A seedling tray placing device, characterized by comprising: The tray placing device comprises: a tray placing vehicle body; a tray conveying mechanism arranged on the tray placing vehicle body and configured to convey the seedling trays in a left-right direction of the tray placing vehicle body; a transverse tray conveying mechanism comprising a first transverse carrier, a stopper and a tray pushing structure, the first transverse carrier is arranged on the tray placing vehicle body and located at one side of the tray conveying mechanism in the left-right direction and extends in the left-right direction to carry the seedling trays conveyed by the tray conveying mechanism, at least two seedling trays can be sequentially placed along the length direction of the first transverse carrier, the stopper is arranged at the end of the first transverse carrier away from the tray conveying mechanism in the left-right direction, and the tray pushing structure is arranged on the tray placing vehicle body to push the seedling trays on the first transverse carrier to move backward; and a longitudinal tray conveying mechanism comprising at least one longitudinal carrier, at least one first conveying belt, at least two first transmission pulleys, at least two first mounting shafts and at least one first driving member, the longitudinal carrier is arranged on the rear side of the first transverse carrier and extends downwardly and obliquely, the two first mounting shafts are spaced apart on the longitudinal carrier along the extension direction of the longitudinal carrier and each extends in the left-right direction, the two first transmission pulleys are respectively sleeved on the two first mounting shafts and can rotate relative to the longitudinal carrier, the first conveying belt is sleeved on the two first transmission pulleys, and the first driving member is drivingly connected with one of the two first transmission pulleys to drive the first transmission pulleys to rotate the first conveying belt relative to the longitudinal carrier, so that the seedling trays falling from the first transverse carrier move downwardly under force.

2. The tray placing apparatus of claim 1, wherein The tray pushing structure is arranged on the front side of the first transverse carrier and comprises a pushing plate and a second driving member, the pushing plate extends in the left-right direction, and the second driving member is drivingly connected with the pushing plate to drive the pushing plate to move in a front-rear direction of the tray placing vehicle body to push the seedling trays on the first transverse carrier to move backward to the first conveying belt.

3. The tray placing apparatus of claim 2, wherein The tray pushing structure further comprises a controller and a timer, the controller is electrically connected with the second driving member and the timer to control the second driving member to drive the pushing plate to move in the front-rear direction according to the timing interval of the timer.

4. The tray placing apparatus of claim 2, wherein The tray placing device further comprises a support frame, the support frame is arranged on the front side of the first transverse carrier, and the second driving member is arranged on the support frame.

5. The tray placing apparatus of claim 1, wherein The first transverse carrier comprises a support frame and a plurality of rotating shafts, the rotating shafts are spaced apart in the left-right direction within the support frame, each rotating shaft extends in the front-rear direction of the tray placing vehicle body and can rotate relative to the support frame about its axis.

6. The tray placing apparatus of claim 1, wherein The included angle between the longitudinal carrier and the first transverse carrier is greater than or equal to 20º and less than or equal to 30º.

7. The tray placing apparatus of claim 1, wherein One of the two first mounting shafts is a transmission shaft, and the transmission shaft is rotatably mounted on the longitudinal carrier. The longitudinal disc conveying mechanism further comprises a transmission structure, the transmission structure comprises a driving sprocket, a transmission sprocket and a chain, the transmission shaft is rotatably installed on the longitudinal bearing frame, the transmission shaft is sleeved with the transmission sprocket, the driving sprocket is arranged on one side of the transmission sprocket in the front-rear direction or the up-down direction of the disc swinging vehicle body, the chain is sleeved outside the driving sprocket and the transmission sprocket, the first driving member is drivingly connected with the driving sprocket to drive the driving sprocket to rotate, so that the driving sprocket drives the transmission sprocket to rotate through the chain.

8. The tray placing apparatus of claim 1, wherein The disc swinging vehicle body comprises a mounting frame, four wheels and a third driving member, two of the four wheels are arranged on the mounting frame and are distributed in the left-right direction and are drivingly connected with at least one third driving member, and the other two of the four wheels are arranged at the tail end of the longitudinal bearing frame; The first transverse bearing frame is arranged on the mounting frame; The seedling disc disc swinging device further comprises a supporting plate, the supporting plate is arranged on the rear side of the longitudinal bearing frame and extends downwardly and obliquely.

9. The tray placing apparatus of claim 8, wherein The angle between the supporting plate and the longitudinal bearing frame is the same as the angle between the longitudinal bearing frame and the first transverse bearing frame.

10. The tray placing apparatus of claim 1, wherein The disc conveying mechanism comprises a second transverse bearing frame, at least one second conveying belt, at least two second transmission pulleys, at least two second mounting shafts and at least one fourth driving member, the second transverse bearing frame extends in the left-right direction, two second mounting shafts are arranged on the second transverse bearing frame in the left-right direction, each second mounting shaft extends in the front-rear direction of the disc swinging vehicle body, two second transmission pulleys are correspondingly sleeved on the two second mounting shafts and are rotatable relative to the second transverse bearing frame, the second conveying belt is sleeved outside the two second transmission pulleys, the fourth driving member is arranged on the second transverse bearing frame and is drivingly connected with one of the two second transmission pulleys to drive the second transmission pulleys to drive the second conveying belt to rotate relative to the second transverse bearing frame, so that the seedling disc on the second conveying belt is conveyed to the first transverse bearing frame.

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