CN220123538U

CN220123538U - Turnover frame for transplanting and raising seedlings

Info

Publication number: CN220123538U
Application number: CN202321263288.2U
Authority: CN
Inventors: 袁贤泽; 吉慎才
Original assignee: Yunnan Shuohong Agricultural Development Co ltd
Current assignee: Yunnan Shuohong Agricultural Development Co ltd
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-12-05
Anticipated expiration: 2033-05-23

Abstract

The utility model discloses a seedling transplanting and seedling culturing turnover frame, which belongs to the technical field of seedling culturing turnover, and comprises four upright posts, universal wheels arranged at the bottom of the upright posts, and further comprises: each supporting plate group comprises four placing supporting plates which are used for placing seedling trays for turnover; a rotary column, wherein a driving mechanism for rotating the rotary column is arranged at the bottom of the rotary column; the transmission mechanism is used for converting the rotation of the rotary column into the forward and backward movement of the supporting plate; this scheme drives the steering column through actuating mechanism and rotates, and the steering column can be through drive mechanism makes the place layer board of front and back both sides remove towards the direction that keeps away from each other or is close to each other when rotating, can change the front and back and place the distance between the layer board, and the rethread is about the connecting plate adjacent place the layer board and is kept away from each other or is close to each other to both sides pulling together along with continuous stand, and the distance between the layer board was placed to adjustable left and right sides is suitable for different seedling tray, and the flexibility is strong.

Description

Turnover frame for transplanting and raising seedlings

Technical Field

The utility model relates to the technical field of seedling cultivation turnover, in particular to a seedling cultivation turnover frame for transplanting seedlings.

Background

The seedling refers to young plants which grow to a plump tray as a standard and are suitable for being transplanted to other environments for growth after seed sowing and germination. The factory seedling raising field consists of a seedling raising greenhouse, a seeding workshop, a germination accelerating room, a packaging workshop, an accessory room and the like. Generally, seedling cultivation is carried out in a seedling raising room through a seedling raising tray, and then turnover transplanting is carried out on seedlings through a turnover vehicle and a turnover frame.

The current turnover vehicle or turnover frame of growing seedlings is fixed length and width, can not change its length and width and adjust, can only be used for the place of the seedling tray of specific size and uses, can't adjust the turnover frame according to the seedling tray of difference, and the limitation is strong.

Therefore, it is necessary to provide a turnover frame for transplanting seedlings to solve the technical problems.

Disclosure of Invention

The utility model aims to provide a seedling transplanting and seedling raising turnover frame so as to solve the technical problems.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a seedling transplanting and seedling raising turnover frame, includes four stands and locates the universal wheel of its bottom, still includes:

the plurality of support plate groups are arranged on the upright posts, each support plate group comprises four placing support plates, each placing support plate is respectively connected with the upright post at a corresponding position, and the placing support plates are used for placing seedling trays for turnover;

the rotating column is arranged at one side of the supporting plate group, and a driving mechanism for rotating the rotating column is arranged at the bottom of the rotating column;

the transmission mechanism is arranged on the rotating column and connected with the placing supporting plate at the corresponding position, and is used for converting the rotation of the rotating column into the forward and backward movement of the supporting plate;

the connecting plate is movably inserted between the left and right adjacent supporting plates and used for changing the left and right distance between the two supporting plates of the chain.

Further, the driving mechanism comprises a support seat rotationally connected with the rotary column, the support seat is rotationally connected with a rotary rod, a worm is arranged at the part of the rotary rod located in the support seat, and a worm wheel meshed with the worm is arranged at the end part of the rotary column corresponding to the support seat.

Further, the transmission mechanism includes:

the screw sleeve is arranged on the rotary column, and the screw sleeve is connected with a movable seat in a threaded manner;

and one end of each connecting rod is hinged with the movable seat, and the other end of each connecting rod is respectively hinged with the front and rear placing supporting plates.

Further, the screw sleeve is provided with a mounting sleeve, the mounting sleeve is provided with a first fastening bolt, and the rotating column is uniformly provided with a plurality of mounting holes matched with the first fastening bolt.

Further, a plurality of fastening holes are formed in the side edge of the connecting plate, and a second fastening bolt matched with the fastening hole is arranged on one side of the placing support plate corresponding to the fastening hole.

Further, a moving groove is formed in the placing supporting plate, a moving plate is arranged in the moving groove in a sliding mode, a first elastic piece is arranged between one end of the moving plate and the moving groove, and a stop block which movably penetrates through the side wall of the placing supporting plate is arranged at the other end of the moving plate;

and a plurality of jacks matched with the stop blocks are arranged on the upright posts corresponding to one side of the placing support plates.

Further, the baffle is movably arranged on the placing support plate, a second elastic piece is arranged between the bottom of the baffle and the inside of the placing support plate, and a limiting assembly for limiting the movement of the baffle is arranged on the placing support plate.

Further, the limiting assembly includes:

the limiting plate movably penetrates through the side wall of the placing supporting plate, one end of the limiting plate is connected with the baffle, and the other end of the limiting plate is provided with a pulling plate;

one end of the third elastic piece is connected with the pull plate, and the other end of the third elastic piece is connected with the placing supporting plate;

and the limiting hole is arranged on the baffle plate and is matched with the limiting plate.

Compared with the prior art, the utility model has the advantages that:

1. according to the scheme, the rotary column is driven to rotate through the driving mechanism, and when the rotary column rotates, the placing support plates on the front side and the rear side can move towards the direction away from or close to each other through the transmission mechanism, so that the distance between the front placing support plates and the rear placing support plates can be changed, and further the seedling raising trays with different widths or different rows can be adapted; meanwhile, the overall stability of the placed support plate and the supporting force of the placed support plate on the seedling raising plate can be improved through the cooperation of the transmission mechanism and the rotating column, and the bearing effect of the placed support plate on the seedling raising plate is improved. The adjacent place layer board about the connecting plate is continuous stand together is kept away from each other or is close to each other to both sides pulling to adjustable left and right sides place the distance between the layer board, adaptable different length or the seedling tray of the quantity of different rows, the flexibility is strong, satisfies different user demands, need not to purchase additional turnover frame again, reduce cost, the practicality is strong.

2. The height of the supporting plate group can be adjusted, or the number of the supporting plate groups on the stand columns is changed, so that the seedling raising tray is applicable to seedling raising trays with different heights, and the seedling raising tray is high in flexibility, wide in application range and good in using effect.

3. When before putting the seedling tray on the placing support plate, or when taking the seedling tray off the placing support plate, the baffle can be pressed, the baffle can be limited and fixed through the limiting component, at the moment, the seedling tray can be conveniently placed on the placing support plate or taken off from the placing support plate, the placing and the taking-off of the seedling tray are convenient and simple, time and labor are saved, and the condition that the current baffle is fixed is avoided.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1A;

FIG. 3 is a schematic view of the structure of each component of the pallet assembly of the present utility model;

FIG. 4 is a schematic top view of the interior of the support of the present utility model;

FIG. 5 is an enlarged schematic view of the structure of FIG. 3B;

FIG. 6 is an enlarged schematic view of the structure of FIG. 3 at C;

fig. 7 is a schematic diagram of a partial side cross-sectional structure of a placement pallet according to the present utility model.

The reference numerals in the figures illustrate:

1. a column; 2. a universal wheel; 3. a pallet group; 4. placing a supporting plate; 5. a rotating column; 6. a driving mechanism; 61. a support; 62. a rotating rod; 63. a worm; 64. a worm wheel; 7. a transmission mechanism; 71. a screw sleeve; 72. a movable seat; 73. a connecting rod; 8. a connecting plate; 9. a mounting sleeve; 10. a first fastening bolt; 11. a mounting hole; 12. a fastening hole; 13. a second fastening bolt; 14. shifting the groove; 15. moving the plate; 16. a first elastic member; 17. a stop block; 18. a jack; 19. a baffle; 20. a second elastic member; 21. a restriction assembly; 211. a limiting plate; 212. pulling a plate; 213. a third elastic member; 214. limiting the aperture.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Embodiment one:

referring to fig. 1-3, a turnover frame for transplanting and raising seedlings comprises four upright posts 1 and universal wheels 2 arranged at the bottom of the four upright posts, and further comprises: the plurality of pallet groups 3 are arranged on the upright posts 1, each pallet group 3 comprises four placing pallets 4, each placing pallet 4 is respectively connected with the upright posts 1 at the corresponding positions, and the placing pallets 4 are used for placing seedling trays for turnover; the rotating column 5 is arranged at one side of the supporting plate group 3, and a driving mechanism 6 for rotating the rotating column 5 is arranged at the bottom of the rotating column 5; the transmission mechanism 7 is arranged on the rotating column 5 and connected with the placing supporting plate 4 at the corresponding position, and is used for converting the rotation of the rotating column 5 into the front-back movement of the supporting plate 4; the connecting plate 8 is movably inserted between the left and right adjacent supporting plates 4 and is used for changing the left and right distance between the two supporting plates 4 of the chain.

The screw sleeve 71 is provided with a mounting sleeve 9, the mounting sleeve 9 is provided with a first fastening bolt 10, and the rotary column 5 is uniformly provided with a plurality of mounting holes 11 matched with the first fastening bolt 10. The side of the connecting plate 8 is provided with a plurality of fastening holes 12, and one side of the corresponding fastening hole 12 for placing the supporting plate 4 is provided with a second fastening bolt 13 which is matched with the fastening hole 12.

When the seedling raising device is used, seedling raising trays filled with seedlings are placed on each placing support plate 4, when the length and the width of the device need to be changed, the driving mechanism 6 drives the rotating column 5 to rotate, when the rotating column 5 rotates, the placing support plates 4 on the front side and the rear side can move towards the directions away from or close to each other through the driving mechanism 7, and the upright posts 1 connected with the corresponding placing support plates 4 can also move along with the rotating column, so that the distance between the front placing support plates 4 and the rear placing support plates 4 can be changed, and the seedling raising device can adapt to the seedling raising trays with different widths or different rows; meanwhile, the overall stability of the placed support plate 4 and the supporting force of the placed support plate on the seedling raising plate can be improved through the cooperation of the transmission mechanism 7 and the rotating column 5, and the bearing effect of the placed support plate 4 on the seedling raising plate is improved. The second fastening bolts 13 are unscrewed outwards, so that after the second fastening bolts 13 are separated from the fastening holes 12 on the connecting plate 8, the left and right placed support plates 4 can slide relatively with the connecting plate 8, then the left and right adjacent placed support plates 4 of the connecting plate 8 are pulled towards the two sides away from each other or towards each other along with the connected upright posts 1, and the left and right placed support plates 4 can slide away from each other or towards each other along the connecting plate 8, so that the distance between the left and right placed support plates 4 can be adjusted, and the seedling raising tray can be suitable for seedling raising trays with different lengths or different rows. In sum, the distance between the supporting plate 4 placed on the front side and the rear side and the supporting plate 4 placed on the left side and the right side can be adjusted to adapt to seedling trays with different lengths and widths, and seedling trays with different numbers can be placed, so that the flexibility is strong, different use requirements are met, additional turnover frames are not required to be purchased, the cost is reduced, the application range is wide, the practicability is strong, and the use effect is good.

In this embodiment, referring to fig. 1 and 4, preferably, the driving mechanism 6 includes a support 61 rotatably connected to the rotary column 5, the universal wheel 2 is also disposed at the bottom of the support 61, the support 61 is rotatably connected to a rotating rod 62, a worm 63 is disposed at a portion of the rotating rod 62 located in the support 61, and a worm wheel 64 meshed with the worm 63 is disposed at an end of the rotary column 5 corresponding to the support 61. When the length and width of the device need to be changed, the rotating rod 62 is rotated to drive the worm 63 to rotate, the worm 63 drives the worm wheel 64 meshed with the worm 63 to rotate, and the rotating rod 62 drives the rotating column 5 to rotate.

In this embodiment, referring to fig. 2-3, the transmission mechanism 7 preferably includes: the screw sleeve 71 is arranged on the rotary column 5, and the screw sleeve 71 is connected with a movable seat 72 in a threaded manner; two connecting rods 73, one end of which is hinged with the movable seat 72, and the other end of which is respectively hinged with the front and rear placing support plates 4. When the rotating column 5 rotates to drive the threaded sleeve 71 on the rotating column, the threaded sleeve 71 can enable the movable seat 72 to move upwards or downwards, when the movable seat 72 moves upwards, the movable seat 72 can enable the connecting rods 73 to be far away from each other to be opened, namely, the connecting rods 73 can drive the placing support plates 4 on the front side and the rear side to move towards the direction far away from each other, the upright posts 1 connected to the corresponding placing support plates 4 can move along with the same, and when the movable seat 72 moves downwards, the placing support plates 4 on the front side and the rear side can move towards the direction close to each other, the distance between the front placing support plates 4 and the rear placing support plates 4 can be changed, the connecting rods 73 are connected with the placing support plates 4, and the overall stability of the placing support plates 4 and the supporting force on seedling trays can be improved through the cooperation of the transmission mechanism 7 and the rotating column 5.

Embodiment two:

referring to fig. 3 and 5, on the basis of the first embodiment, a moving slot 14 is formed on a placing support plate 4, a moving plate 15 is slidably disposed in the moving slot 14, a first elastic member 16 is disposed between one end of the moving plate 15 and the moving slot 14, the first elastic member 16 in the present utility model adopts a spring, and a stop block 17 movably penetrating through a side wall of the placing support plate 4 is disposed at the other end of the moving plate 15; a plurality of jacks 18 matched with the stop blocks 17 are arranged on one side of the upright post 1, on which the supporting plate 4 is correspondingly arranged. When it is necessary to remove the pallet set 3 or to adjust the height of the pallet set 3, the first fastening bolt 10 may be first unscrewed to disengage from the mounting hole 11, and the mounting sleeve 9 and the screw sleeve 71 are in a movable state on the rotation post 5. Then, the rotating post 5 is pulled to drive the stop block 17 to move, the first elastic piece 16 is compressed, the stop block 17 is separated from the jack 18, the whole supporting plate group 3 can be moved up and down at the moment, the installation sleeve 9 and the threaded sleeve 71 are driven to slide on the rotating post 5, and when the supporting plate group 3 is taken down, the supporting plate group 3 is moved up, and the installation sleeve 9 and the threaded sleeve 71 are separated from the rotating post 5. When the pallet group 3 is moved to a designated height, after the movable plate 15 is loosened, the stop block 17 enters the jack 18 at the designated position through the resilience force of the first elastic piece 16, the placed pallet 4 can be fixed at the moment, namely, the pallet group 3 is fixed on the upright 1, then the first fastening bolt 10 is screwed down to enable the first fastening bolt 10 to enter the corresponding mounting hole 11, and the mounting sleeve 9 and the screw sleeve 71 can be fixed on the swivel post 5, so that the height of the pallet group 3 can be adjusted, or the number of the pallet groups 3 on the upright 1 is changed, and the movable pallet group is further suitable for seedling trays with different heights.

Embodiment III:

referring to fig. 3 and fig. 6-7, on the basis of the first embodiment, a baffle 19 is movably disposed on the placement support plate 4, a second elastic member 20 is disposed between the bottom of the baffle 19 and the inside of the placement support plate 4, the second elastic member 20 in the present utility model adopts a spring, and a limiting assembly 21 for limiting the movement of the baffle 19 is disposed on the placement support plate 4. The restriction assembly 21 includes: a limiting plate 211 movably penetrating through the side wall of the placing support plate 4, one end of the limiting plate is connected with the baffle 19, and the other end of the limiting plate is provided with a pull plate 212; a third elastic member 213, one end of which is connected to the pull plate 212 and the other end of which is connected to the placing pallet 4, wherein the third elastic member 213 is a spring; and a limiting hole 214 which is arranged on the baffle 19 and is matched with the limiting plate 211. Before placing the seedling raising tray on the placing support plate 4, or when taking the seedling raising tray off the placing support plate 4, the baffle plate 19 can be pressed at this time to move towards the inside of the placing support plate 4 and compress the second elastic piece 20, after the baffle plate 19 completely enters the placing support plate 4, the position of the limiting hole 214 at this time corresponds to that of the limiting plate 211, and the third elastic piece 213 in a compressed state can enable the limiting plate 211 to be inserted into the limiting hole 214, so that the baffle plate 19 can be limited and fixed, at this time, the seedling raising tray can be conveniently placed on the placing support plate 4 or taken off from the placing support plate 4, the placing and taking down of the seedling raising tray are convenient and simple, time and labor are saved, and the current situation that the baffle plate 19 is fixed is avoided. When the seedling tray is placed, the pulling plate 212 is pulled outwards at the moment, the limiting plate 211 is driven to move outwards, the third elastic piece 213 is compressed, after the limiting plate 211 is separated from the limiting hole 214, the baffle plate 19 can be moved upwards through the second elastic piece 20, the baffle plate 19 can block the seedling tray at the moment, and the situation that the seedling tray falls out in the turnover moving process is greatly prevented, so that the seedling tray has a good using effect.

Working principle: when the seedling raising device is used, seedling raising trays filled with seedlings are placed on the placing support plates 4, the vertical columns 1 are driven to move through the universal wheels 2, when the length and width of the device are required to be changed, the rotating rods 62 drive the worm 63 to rotate, the worm 63 drives the worm wheel 64 meshed with the worm 63 to rotate, the rotating rods 62 drive the rotating columns 5 to rotate, the threaded sleeves 71 on the rotating columns 5 are driven to rotate when the rotating columns 5 rotate, the movable seats 72 are moved upwards or downwards by the threaded sleeves 71, when the movable seats 72 are moved upwards, the movable seats 72 enable the connecting rods 73 to be separated from each other to be opened, namely, the connecting rods 73 drive the placing support plates 4 on the front side and the rear side to move towards the direction away from each other, the vertical columns 1 connected with the corresponding placing support plates 4 also move along with the connecting rods, and similarly when the movable seats 72 are moved downwards, the placing support plates 4 on the front side and the rear side move towards the direction close to each other, and the distance between the front placing support plates 4 and the rear side can be changed. The second fastening bolts 13 are unscrewed outwards, so that the second fastening bolts 13 are separated from the fastening holes 12 on the connecting plate 8, the left and right placed support plates 4 can slide relatively with the connecting plate 8 at the moment, then the left and right adjacent placed support plates 4 of the connecting plate 8 are pulled towards the two sides away from or towards each other along with the connected upright posts 1, the left and right placed support plates 4 can slide away from or towards each other along the connecting plate 8 at the moment, the distance between the left and right placed support plates 4 can be adjusted, the seedling raising plates with different lengths or different rows are adapted, and after adjustment, the second fastening bolts 13 are screwed down to be matched with the fastening holes 12, so that the connecting plate 8 and the left and right placed support plates 4 are fixed.

When it is necessary to remove the pallet set 3 or to adjust the height of the pallet set 3, the first fastening bolt 10 may be first unscrewed to disengage from the mounting hole 11, and the mounting sleeve 9 and the screw sleeve 71 are in a movable state on the rotation post 5. Then, the rotating post 5 is pulled to drive the stop block 17 to move, the first elastic piece 16 is compressed, the stop block 17 is separated from the jack 18, the whole supporting plate group 3 can be moved up and down at the moment, the installation sleeve 9 and the threaded sleeve 71 are driven to slide on the rotating post 5, and when the supporting plate group 3 is taken down, the supporting plate group 3 is moved up, and the installation sleeve 9 and the threaded sleeve 71 are separated from the rotating post 5. When the pallet set 3 is moved to a designated height, after the moving plate 15 is loosened, the stop block 17 enters into the insertion hole 18 at a designated position through the resilience force of the first elastic member 16, at this time, the placing pallet 4 can be fixed, that is, the pallet set 3 is fixed on the upright 1, and then the first fastening bolt 10 is screwed down to enter into the corresponding mounting hole 11, so that the mounting sleeve 9 and the screw sleeve 71 can be fixed on the rotating column 5.

When the tray is placed on the placement tray 4 or the tray is removed from the placement tray 4, the baffle 19 may be pressed to move toward the inside of the placement tray 4 and compress the second elastic member 20, and when the baffle 19 completely enters the placement tray 4, the position of the limiting hole 214 corresponds to the position of the limiting plate 211, and the third elastic member 213 in a compressed state may enable the limiting plate 211 to be inserted into the limiting hole 214, so as to limit and fix the baffle 19. When the seedling tray is placed, the pulling plate 212 is pulled outwards at this time, so that the limiting plate 211 is driven to move outwards, the third elastic piece 213 is compressed, and when the limiting plate 211 is separated from the limiting hole 214, the baffle 19 can be moved upwards through the second elastic piece 20, and at this time, the baffle 19 can block the seedling tray.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme and the concept of the present utility model, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a seedling transplanting seedling turnover frame, includes four stand (1) and locates universal wheel (2) of its bottom, its characterized in that still includes:

the plurality of pallet groups (3) are arranged on the upright posts (1), each pallet group (3) comprises four placing pallets (4), each placing pallet (4) is respectively connected with the upright posts (1) at the corresponding position, and each placing pallet (4) is used for placing a seedling raising tray for turnover;

a rotating column (5) arranged at one side of the supporting plate group (3), wherein a driving mechanism (6) for rotating the rotating column (5) is arranged at the bottom of the rotating column;

the transmission mechanism (7) is arranged on the rotating column (5) and connected with the placing supporting plate (4) at the corresponding position, and is used for converting the rotation of the rotating column (5) into the forward and backward movement of the supporting plate (4);

the connecting plate (8) is movably inserted between the left and right adjacent placing support plates (4) and is used for changing the left and right distance between the two support plates (4) of the chain.

2. A plant transplanting seedling turnover frame as claimed in claim 1, characterized in that said driving mechanism (6) comprises a support (61) rotatably connected with a rotary column (5), said support (61) is rotatably connected with a rotary rod (62), a part of said rotary rod (62) located in said support (61) is provided with a worm (63), and the end of said rotary column (5) corresponding to said support (61) is provided with a worm wheel (64) meshed with said worm (63).

3. A seedling transplanting and raising turnover frame as claimed in claim 1, characterized in that said transmission mechanism (7) comprises:

the screw sleeve (71) is arranged on the rotary column (5), and the screw sleeve (71) is connected with a movable seat (72) in a threaded manner;

and one end of each connecting rod (73) is hinged with the movable seat (72), and the other end of each connecting rod is respectively hinged with the front and rear placing support plates (4).

4. A turnover frame for transplanting seedlings according to claim 3, characterized in that the screw sleeve (71) is provided with a mounting sleeve (9), the mounting sleeve (9) is provided with a first fastening bolt (10), and the rotating column (5) is uniformly provided with a plurality of mounting holes (11) which are matched with the first fastening bolt (10).

5. The seedling transplanting and seedling-raising turnover frame according to claim 1, wherein a plurality of fastening holes (12) are formed in the side edge of the connecting plate (8), and a second fastening bolt (13) matched with the fastening holes (12) is arranged on one side of the placing support plate (4) corresponding to the fastening holes (12).

6. The seedling transplanting and seedling-raising turnover frame according to claim 1, characterized in that a moving groove (14) is formed in the placing supporting plate (4), a moving plate (15) is arranged in the moving groove (14) in a sliding mode, a first elastic piece (16) is arranged between one end of the moving plate (15) and the moving groove (14), and a stop block (17) which penetrates through the side wall of the placing supporting plate (4) in a movable mode is arranged at the other end of the moving plate (15);

and a plurality of jacks (18) matched with the stop blocks (17) are arranged on one side of the upright post (1) corresponding to the placing supporting plate (4).

7. The seedling transplanting and seedling raising turnover frame according to claim 1, wherein a baffle plate (19) is movably arranged on the placing support plate (4), a second elastic piece (20) is arranged between the bottom of the baffle plate (19) and the inside of the placing support plate (4), and a limiting component (21) for limiting the movement of the baffle plate (19) is arranged on the placing support plate (4).

8. A seedling transplanting seedling turnover stand as claimed in claim 7, characterized in that said limiting assembly (21) comprises:

a limiting plate (211) which penetrates through the side wall of the placing supporting plate (4) actively, one end of the limiting plate is connected with the baffle plate (19), and the other end of the limiting plate is provided with a pulling plate (212);

a third elastic member (213) having one end connected to the pulling plate (212) and the other end connected to the placement pallet (4);

and a limiting hole (214) which is arranged on the baffle plate (19) and is matched with the limiting plate (211).