Pea seedling conveying box with fixing and protecting functions

Abstract

The invention discloses a pea seedling conveying box with a fixing and protecting function, and relates to the technical field of conveying boxes, the pea seedling conveying box comprises a box body, a square lifting frame is slidably connected in the box body, the lifting frame is slidably connected with clamping blocks symmetrically distributed along the lifting frame, the top of each clamping block is provided with a limiting groove, and the limiting grooves are arranged in the box body. U-shaped blocking strips which are symmetrically distributed along the box body are fixedly connected to the upper side in the box body, the blocking strips are used for supporting and blocking the adjacent clamping blocks, and first springs are fixedly connected between the clamping blocks and the lifting frame. When seedlings are transported, the lifting frame ascends to prolong the protection height, the sufficient space needed by growth of the seedlings is met, a better growth environment is provided for the seedlings, and when the seedling transportation box body is taken out, the lifting frame descends to increase the storage space, increase the number of empty box transportation and improve the transportation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of transportation boxes, and particularly to a pea seedling transportation box with a fixed protection function. Background Art

[0002] A pea seedling transportation box is a container used for rigid or semi-rigid transportation and storage of pea seedlings. Through internal fittings and positioning devices, the transportation box ensures that the pea seedlings are stably placed during transportation, avoiding damage caused by vibration or movement.

[0003] Traditional pea seedling transportation boxes usually use boxes with fixed low heights for loading in pursuit of stacking portability. However, this design ignores the needs of seedlings during the growth stage in the transportation process. The limited growth space may lead to the situation where the tops of the seedlings exceed the box limits during transportation, affecting the normal growth of the seedlings, and thus may cause restricted development or damage due to extrusion. At the same time, multi-layer stacked transportation boxes are prone to displacement or collision due to bumps and shakes during transportation, further increasing the risk of seedling damage.

[0004] Based on the above situation, the present invention proposes a pea seedling transportation box with a fixed protection function. Summary of the Invention

[0005] In order to overcome the above-mentioned shortcomings of insufficient growth space and poor stability during transportation, the present invention provides a pea seedling transportation box with a fixed protection function.

[0006] A pea seedling transportation box with a fixed protection function includes a box body. An "O"-shaped lifting frame is slidably connected inside the box body. The lifting frame is slidably connected with blocks symmetrically distributed along the lifting frame. A limiting groove is provided at the top of the block. U-shaped retaining strips symmetrically distributed along the box body are fixedly connected to the upper side inside the box body. The retaining strips are used to support and block adjacent blocks. A first spring is fixedly connected between the block and the lifting frame. The lifting frame is slidably connected with a latch corresponding to the block. A slot corresponding to the latch is opened at the bottom of the box body. The latch of the lower lifting frame is inserted into the slot of the upper box body. When the latch is inserted to the limit of the slot, the upper box body has not yet contacted the lower lifting frame. A second spring is fixedly connected between the latch and the lifting frame.

[0007] Further, a cross partition is provided at the bottom inside the box body.

[0008] Further, a groove for mutually fitting and stacking with the lower lifting frame is opened at the bottom outside the box body.

[0009] Further, a plurality of ventilation holes are opened on each side surface of the lifting frame.

[0010] Further explanation: The clamping block moves upward to contact the adjacent stop bar, and the contact surface of the clamping block is set as an arc surface. The clamping block is in extrusion fit with the adjacent stop bar through the arc surface.

[0011] Further explanation: It further includes a clamping frame corresponding to the clamping rod. The clamping frame is slidably connected to the box body. A clamping groove is formed on the side of the clamping rod away from the adjacent clamping frame. The clamping groove on the lower clamping rod is aligned with the upper clamping frame. The upper clamping frame slides horizontally into the clamping groove of the lower clamping rod. A third spring is fixedly connected between the clamping frame and the box body. An L-shaped sliding plate symmetrically distributed along the box body is slidably connected in the box body. The top of the L-shaped sliding plate contacts the upper side of the lifting frame. A pushing surface is provided on one side of the lifting frame close to each L-shaped sliding plate. The pushing surface moves upward to contact the adjacent L-shaped sliding plate and drives the L-shaped sliding plate to slide upward. The L-shaped sliding plate is provided with a push rod. The push rod corresponds to the clamping frame, and the push rod is in extrusion fit with the corresponding clamping frame.

[0012] Further explanation: The clamping frame contacts the corresponding push rod, and the upper part of the side surface of the clamping frame in contact is set as a plane, and the lower part is set as an inclined surface. When the clamping frame is horizontally inserted into the clamping groove, the push rod contacts the plane of the clamping frame.

[0013] Further explanation: It further includes a guiding frame symmetrically distributed along the box body. The guiding frame is slidably connected in the box body. The push rod is slidably connected to the adjacent guiding frame. A guiding plate is slidably connected in the box body. Oblique holes symmetrically distributed along the guiding plate are formed in the guiding plate. The guiding plate is slidably connected to the adjacent guiding frame through the oblique holes. A fourth spring is fixedly connected between the box body and the guiding plate.

[0014] Further explanation: It further includes clamping plates symmetrically distributed along the box body. The clamping plates are slidably connected in the box body. The clamping plates are provided with wedge-shaped blocks symmetrically distributed along the clamping plates. The wedge-shaped blocks are in extrusion fit with the adjacent L-shaped sliding plates. A fifth spring is fixedly connected between the clamping plates and the box body.

[0015] Further explanation: The wedge-shaped block is slidably connected to the adjacent clamping plate, and a tension spring is fixedly connected between the wedge-shaped block and the adjacent clamping plate.

[0016] The beneficial effects of the present invention are as follows: When transporting seedlings, the lifting frame is raised by the present invention to extend the protection height, meet the sufficient space required for the growth of seedlings, and provide a better growth environment for the seedlings. When taking out the seedling transportation box body, the lifting frame is lowered to increase the storage space, increase the number of empty boxes transported, and improve the transportation efficiency.

[0017] The ventilation holes on the lifting frame of the present invention ensure air circulation during the transportation of seedlings, avoiding problems such as excessive humidity and high carbon dioxide concentration caused by a closed environment, and contributing to the healthy growth of seedlings.

[0018] The present invention utilizes the insertion and fitting design and automatic locking function of the upper box body and the lower lifting frame, significantly enhancing the overall stability during multi-layer stacking and reducing the tipping or squeezing phenomena caused by vehicle bumps.

[0019] The present invention only needs to continuously repeat the three-step operations of placing seedlings, pulling up the lifting frame, and stacking the box bodies to achieve the horizontal and vertical fixation of the overall box body and the lifting frame, effectively preventing the seedling box body and the lifting frame from shifting due to up-and-down shaking or left-and-right collision during transportation, and reducing the risk of seedling damage.

[0020] The present invention can, according to the ability of the porter, choose to press the guide plate of the corresponding layer backward to release the horizontal fixation of the box body and the lifting frame of this layer. In this way, during transshipment, it is not necessary to release the horizontal fixation of the box body and the lifting frame layer by layer from top to bottom, and the conveying boxes of this layer and above can be carried as a whole and separated, without the need to carry the conveying boxes individually.

[0021] The present invention makes the L-shaped slide plate move upward to squeeze the adjacent wedge-shaped block, so that the clamping plate fixes the cultivation tray, achieving the effect of fixing the pea seedlings and preventing the pea seedlings from moving randomly and being damaged due to loosening. Description of the Drawings

[0022] Figure 1 is a three-dimensional structure schematic diagram of the present invention.

[0023] Figure 2 is a three-dimensional structure schematic diagram of the separation of the box body and the lifting frame of the present invention.

[0024] Figure 3 is a three-dimensional structure schematic diagram of components such as the box body, the lifting frame, and the clamping block of the present invention.

[0025] Figure 4 is a three-dimensional structure schematic diagram of the clamping block, the first spring, the clamping rod, and the second spring of the present invention.

[0026] Figure 5 is a three-dimensional structure schematic diagram of components such as the clamping frame, the third spring, and the L-shaped slide plate of the present invention.

[0027] Figure 6 is a three-dimensional structure schematic diagram of components such as the box body, the third spring, and the L-shaped slide plate of the present invention.

[0028] Figure 7 is a three-dimensional structure schematic diagram of components such as the clamping rod, the L-shaped slide plate, and the push rod of the present invention.

[0029] Figure 8This is a three-dimensional structural schematic diagram of the card holder, the third spring, the L-shaped slide plate and the push rod of the present invention.

[0030] Figure 9 This is a three-dimensional structural schematic diagram of components such as the push rod, the guide frame and the guide plate of the present invention.

[0031] Figure 10 This is a three-dimensional structural schematic diagram of the push rod, the guide frame, the guide plate and the fourth spring of the present invention.

[0032] Figure 11 This is a three-dimensional structural schematic diagram of the box body, the L-shaped slide plate, the clamping plate and the wedge block of the present invention.

[0033] Figure 12 This is a three-dimensional structural schematic diagram of components such as the L-shaped slide plate, the clamping plate and the wedge block of the present invention.

[0034] In the above drawings: 1: box body, 2: lifting frame, 3: clamping block, 301: stop bar, 4: first spring, 5: clamping rod, 501: slot, 6: second spring, 7: card holder, 701: card slot, 8: third spring, 9: L-shaped slide plate, 901: pushing surface, 10: push rod, 11: guide frame, 12: guide plate, 13: fourth spring, 14: clamping plate, 15: wedge block, 16: fifth spring, 17: tension spring. Detailed implementation manners

[0035] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which the presently preferred embodiments of the invention are shown. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and fully convey the scope of the invention to those skilled in the art.

[0036] Example 1: A pea seedling transport box with a fixed protection function, as Figures 1-4As shown in the figure, it includes a box body 1. At the bottom inside the box body 1, there is a cross partition for placing pea seedlings on different cultivation trays separately. At the bottom outside the box body 1, there is a groove which fits and stacks with the lifting frame 2 in the lower layer. Inside the box body 1, there is a rectangular lifting frame 2 that is slidably connected in the vertical direction. On each of the front, back, left, and right sides of the lifting frame 2, there are several ventilation holes to meet the air requirements for the growth of pea seedlings during transportation. On the front and rear parts outside the lifting frame 2, there are blocks 3 that are slidably connected in the left - right direction and symmetrically distributed along the left and right sides of the lifting frame 2. In the middle of the top of the block 3, there is a U - shaped limit groove. Horizontally and fixedly connected on the upper side inside the box body 1 are U - shaped stop bars 301 that are symmetrically distributed along the left and right sides of the box body 1. The stop bars 301 are used to support and block the adjacent blocks 3. When the block 3 moves upward to contact the adjacent stop bar 301, the contact surface of the block 3 is set as an arc surface. The block 3 is in extrusion fit with the adjacent stop bar 301 through the arc surface. A first spring 4 is fixedly connected between the block 3 and the lifting frame 2. On the lifting frame 2, there is a rod 5 that is slidably connected in the vertical direction and corresponds to the block 3. There is a slot 501 corresponding to the rod 5 on the bottom of the box body 1. The rod 5 on the lower - layer lifting frame 2 is inserted into the slot 501 of the upper - layer box body 1. When the rod 5 is inserted to the limit of the slot 501, the upper - layer box body 1 has not yet contacted the lower - layer lifting frame 2. A second spring 6 is fixedly connected between the rod 5 and the lifting frame 2.

[0037] First, place a full amount of pea seedlings in the box body 1, and then pull out the lifting frame 2 upward. The lifting frame 2 drives the block 3, the first spring 4, the rod 5, and the second spring 6 on it to move upward as a whole. When the block 3 moves upward to contact the stop bar 301, due to the extrusion of the stop bar 301, the block 3 slides towards the side that compresses the first spring 4. When the block 3 continues to move upward and crosses the stop bar 301, the first spring 4 resets and drives the block 3 to reset and latch on the stop bar 301 to fix the removed lifting frame 2. In this way, when transporting the seedlings, by raising the lifting frame 2, the protection height is extended to meet the sufficient space required for the growth of the seedlings and provide a better growth environment for the seedlings. When taking out the seedling - transporting box body 1, by lowering the lifting frame 2, the storage space is increased, the number of empty - box transports is increased, and the transport efficiency is improved.

[0038] Moreover, the ventilation holes on the lifting frame 2 of the present invention ensure the air circulation of the seedlings during transportation, avoid problems such as excessive humidity and excessive carbon dioxide concentration caused by a closed environment, and contribute to the healthy growth of the seedlings.

[0039] Subsequently, stack the next box body 1 containing pea seedlings on the lifting frame 2 after the lower layer is removed. During the stacking process, the clamping rod 5 of the lower layer is longitudinally inserted into the slot 501 of the upper box body 1. When the clamping rod 5 is inserted to the limit of the slot 501, at this time, the upper box body 1 has not yet contacted the lower lifting frame 2. The upper box body 1 continues to descend under its own gravity until the groove opened at the outer bottom is stuck on the lower lifting frame 2, thereby squeezing the clamping rod 5 of the lower layer to slide downward relative to the lower lifting frame 2, and the second spring 6 is compressed until the clamping rod 5 of the lower layer is longitudinally inserted into the limit slot of the lower clamping block 3. In this way, the lower clamping block 3 is locked to prevent the lower clamping block 3 from moving left and right randomly and detaching from the adjacent stop strip 301, thereby preventing the lifting frame 2 from descending and improving the stability of the lifting frame 2. At the same time, the mutual limitation between the clamping rod 5 of the lower layer and the slot 501 of the upper box body 1 makes the upper box body 1 firmly fixed on the lower lifting frame 2. And when removing the upper box body 1, the limitation of the lower clamping rod 5 on the lower clamping block 3 is automatically released, so that the clamping block 3 can detach from the stop strip 301, so that the lifting frame 2 can move downward to reset.

[0040] In this way, the present invention utilizes the insertion and fitting design and the automatic locking function of the upper box body 1 and the lower lifting frame 2, significantly enhancing the overall stability during multi-layer stacking and reducing the phenomenon of tipping or extrusion caused by vehicle bumps.

[0041] As Figures 5-8 shown, it further includes a clamping frame 7 corresponding to the clamping rod 5. The clamping frame 7 is slidably connected to one side of the box body 1 close to the slot 501 in the front-rear direction. A clamping slot 701 is opened on the upper side of the clamping rod 5. The clamping slot 701 on the lower clamping rod 5 is aligned with the upper clamping frame 7, and the upper clamping frame 7 is horizontally slid into the clamping slot 701 of the lower clamping rod 5. A third spring 8 is fixedly connected between the clamping frame 7 and the box body 1. Both the front and rear parts in the box body 1 are slidably connected with L-shaped sliding plates 9 symmetrically distributed left and right along the box body 1 in the up-down direction. The top of the L-shaped sliding plate 9 contacts the upper side of the lifting frame 2. A pushing surface 901 is provided on one side of the lifting frame 2 close to each L-shaped sliding plate 9. The pushing surface 901 moves upward to contact the adjacent L-shaped sliding plate 9 and drives the L-shaped sliding plate 9 to slide upward. A push rod 10 is provided on the lower side of the L-shaped sliding plate 9. The push rod 10 corresponds to the clamping frame 7. The clamping frame 7 contacts the corresponding push rod 10, and the upper part of the side surface contacted by the clamping frame 7 is set as a plane, and the lower part is set as an inclined surface. The push rod 10 is in extrusion fit with the inclined surface of the corresponding clamping frame 7. When the clamping frame 7 is horizontally inserted into the clamping slot 701, the push rod 10 contacts the plane of the clamping frame 7.

[0042] Although the mutual limitation between the clamping rod 5 of the lower layer and the slot 501 of the upper box body 1 can make the upper box body 1 firmly fixed on the lower lifting frame 2, it only prevents the box body 1 and the lifting frame 2 from shifting horizontally and cannot avoid up-and-down shaking. Therefore, this problem is solved through the following specific operations: When the next box 1 containing pea seedlings is stacked on the lifting frame 2 after the lower layer is moved out, so that the lower card rod 5 is inserted into the slot 501 of the upper box 1, the card slot 701 on the lower card rod 5 is aligned with the upper card rack 7, and then the upper lifting frame 2 is pulled upward, so that the pushing surface 901 thereon moves upward to contact the upper side of the adjacent L-shaped slide plate 9, and the push rod 10 is driven to slide upward through the L-shaped slide plate 9. The push rod 10 squeezes the inclined surface of the adjacent upper card rack 7, so that the card rack 7 slides toward the side of the compressed third spring 8 until the upper card rack 7 is horizontally inserted into the card slot 701 of the lower card rod 5, so that the upper box 1 will not shake up and down relative to the lifting frame 2 of the lower layer.

[0043] When it is necessary to release the mutual limitation between the bracket 7 and the slot 701, it is necessary to push the lifting frame 2 of each layer downward before removing the box body 1, thereby driving the pushing surface 901 to move downward and away from the upper side of the L-shaped slide 9. At this time, the third spring 8 is reset to drive the bracket 7 to slide out of the slot 701 in the opposite direction, and the limitation can be released. Then the upper side of the lifting frame 2 drops to contact the top of the adjacent L-shaped slide 9, and pushes the L-shaped slide 9 to slide downward and reset.

[0044] Thus, in combination with Examples 1 and 2, the present invention only needs to continuously repeat the three-step operation of placing the seedlings, pulling up the lifting frame 2 and stacking the box body 1 to achieve the lateral and longitudinal fixation of the box body 1 and the lifting frame 2 as a whole, effectively preventing the seedling box body 1 and the lifting frame 2 from shifting due to up and down shaking or left and right collisions during transportation, thereby reducing the risk of damage to the seedlings.

[0045] like Figure 9 and Figure 10 As shown, it also includes a guide frame 11 symmetrically distributed along the box body 1, the guide frame 11 is slidably connected to the box body 1, the push rod 10 is slidably connected to the adjacent guide frame 11, when the L-shaped slide plate 9 drives the push rod 10 to move up and down, the push rod 10 slides up and down along the guide frame 11, and a guide plate 12 is slidably connected in the box body 1, the guide plate 12 has inclined holes symmetrically distributed along the guide plate 12, the guide plate 12 is slidably connected to the adjacent guide frame 11 through the inclined holes, and a fourth spring 13 is fixed between the box body 1 and the guide plate 12.

[0046] Since the above operation can prevent the box 1 from sliding up and down relative to the adjacent lifting frame 2, it is necessary to release the lateral fixation of the box 1 and the lifting frame 2 layer by layer from top to bottom. In this way, when it is necessary to transport, it is necessary to unlock and transport layer by layer, which is troublesome. For example: If there are ten layers of such conveying boxes stacked in each stack in the conveying vehicle, when they need to be transported down, they can only be transported one by one layer. However, by setting the guide plate 12, the present invention can choose to press the guide plate 12 of the corresponding layer backward according to the ability of the porter. For example, by pressing the guide plate 12 of the fifth layer backward, the fourth spring 13 is compressed, and the guide plate 12 squeezes the two adjacent guide frames 11 of the fifth layer closer to each other through the inclined hole, thereby driving the push rod 10 to break away from the plane of the bracket 7. At this time, the bracket 7 slides out of the slot 701 in the opposite direction under the action of the third spring 8, and presses against the end of the adjacent push rod 10 by the side, so as to release the limit between the lifting frame 2 of the fifth layer and the box body 1 of the sixth layer, so that the conveying boxes of the sixth layer and above can be transported and separated as a whole without the need to transport the conveying boxes individually.

[0047] Since the bracket 7 is against the end of the adjacent push rod 10 through the side, the guide plate 12 will not be reset temporarily when the guide plate 12 is released, and the fourth spring 13 still maintains a compressed state. The specific reset operation is as follows: when it is necessary to push the lifting frame 2 down to take the seedlings, the lifting frame 2 drives the push rod 10 downward and gradually separates from the side of the bracket 7 by pushing the L-shaped slide plate 9. At this time, the fourth spring 13 resets and drives the guide plate 12 of the fifth layer to slide forward and reset. The guide plate 12 squeezes the two adjacent guide frames 11 of the fifth layer away from each other through the inclined hole until they re-contact the inclined surface of the adjacent bracket 7.

[0048] like Figure 11 and Figure 12 As shown, it also includes a clamping plate 14 that is symmetrically distributed along the box body 1. The clamping plate 14 is slidably connected to the box body 1 along the front-back direction. A wedge block 15 that is symmetrically distributed along the clamping plate 14 is slidably connected to the clamping plate 14. The wedge block 15 is squeezed and matched with the adjacent L-shaped slide plate 9. A fifth spring 16 is fixedly connected between the clamping plate 14 and the box body 1, and a tension spring 17 is fixedly connected between the wedge block 15 and the adjacent clamping plate 14.

[0049] The pea seedlings are usually placed on a cultivation tray, and four cultivation trays are divided into four sections of the box 1. The L-shaped slide plate 9 moves upward to squeeze the adjacent wedge block 15, so that the clamping plate 14, the wedge block 15 and the tension spring 17 move as a whole to the side close to the adjacent cultivation tray, and the fifth spring 16 is compressed. When the clamping plate 14 contacts the cultivation tray of a certain range of sizes, the clamping plate 14 stops moving, and the wedge block 15 continues to be squeezed relative to the clamping plate 14 to slide toward the side of the tension spring 17. In this way, the cultivation tray is fixed by the clamping plate 14, so as to achieve the effect of fixing the pea seedlings and prevent the pea seedlings from moving loose and being damaged at will.

[0050] When it is necessary to push down the lifting frame 2 to remove seedlings, the lifting frame 2 pushes the L-shaped slide plate 9 to slide downward so that the L-shaped slide plate 9 no longer squeezes the wedge block 15, and the tension spring 17 and the fifth spring 16 gradually reset, so that the wedge block 15 and the clamping plate 14 gradually reset, thereby releasing the cultivation plate.

[0051] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to cover all modifications and equivalent structures and functions.

Claims

1. A pea seedling conveying box with a fixed protection function, comprising a box body (1), characterized in that: A U-shaped lifting frame (2) is slidably connected inside the box body (1). The lifting frame (2) is slidably connected with clamping blocks (3) symmetrically distributed along the lifting frame (2). A limiting groove is provided at the top of the clamping block (3). Inside the upper side of the box body (1), U-shaped retaining strips (301) symmetrically distributed along the box body (1) are fixedly connected. The retaining strips (301) are used to support and block the adjacent clamping blocks (3). A first spring (4) is fixedly connected between the clamping block (3) and the lifting frame (2). The lifting frame (2) is slidably connected with a clamping rod (5) corresponding to the clamping block (3). A slot (501) corresponding to the clamping rod (5) is opened at the bottom of the box body (1). The clamping rod (5) of the lower lifting frame (2) is inserted into the slot (501) of the upper box body (1). When the clamping rod (5) is inserted to the limit of the slot (501), the upper box body (1) has not yet contacted the lower lifting frame (2). A second spring (6) is fixedly connected between the clamping rod (5) and the lifting frame (2).

2. A pea seedling conveying box with a fixed protection function according to claim 1, characterized in that: A cross partition is provided at the bottom inside the box body (1).

3. A pea seedling conveying box with a fixed protection function according to claim 2, characterized in that: A groove for mutually fitting and stacking with the lower lifting frame (2) is opened at the bottom outside the box body (1).

4. A pea seedling conveying box with a fixed protection function according to claim 3, characterized in that: A plurality of ventilation holes are opened on each side surface of the lifting frame (2).

5. A pea seedling conveying box with a fixed protection function according to claim 4, characterized in that: The clamping block (3) moves upward to contact the adjacent retaining strip (301), and the contact surface of the clamping block (3) is set as an arc surface. The clamping block (3) is in extrusion fit with the adjacent retaining strip (301) through the arc surface.

6. A pea seedling transport box with a fixed protection function according to claim 5, characterized in that: It further includes a clamping frame (7) corresponding to the clamping rod (5). The clamping frame (7) is slidably connected with the box body (1). A clamping groove (701) is opened on one side of the clamping rod (5) away from the adjacent clamping frame (7). The clamping groove (701) on the lower clamping rod (5) is aligned with the upper clamping frame (7). The upper clamping frame (7) slides horizontally and is inserted into the clamping groove (701) of the lower clamping rod (5). A third spring (8) is fixedly connected between the clamping frame (7) and the box body (1). Inside the box body (1), L-shaped sliding plates (9) symmetrically distributed along the box body (1) are slidably connected. The top of the L-shaped sliding plate (9) contacts the upper side of the lifting frame (2). A pushing surface (901) is provided on one side of the lifting frame (2) close to each L-shaped sliding plate (9). The pushing surface (901) moves upward to contact the adjacent L-shaped sliding plate (9) and drives the L-shaped sliding plate (9) to slide upward. The L-shaped sliding plate (9) is provided with a push rod (10). The push rod (10) corresponds to the clamping frame (7), and the push rod (10) is in extrusion fit with the corresponding clamping frame (7).

7. A pea seedling conveying box with a fixed protection function according to claim 6, characterized in that: The clamping frame (7) contacts the corresponding push rod (10), and the upper part of the side surface where the clamping frame (7) contacts is set as a plane, and the lower part is set as an inclined surface. When the clamping frame (7) is horizontally inserted into the clamping groove (701), the push rod (10) contacts the plane of the clamping frame (7).

8. A pea seedling transport box with a fixed protection function according to claim 7, characterized in that: It further includes guide frames (11) symmetrically distributed along the box body (1). The guide frames (11) are slidably connected to the inside of the box body (1). The push rod (10) is slidably connected to the adjacent guide frames (11). A guide plate (12) is slidably connected to the inside of the box body (1). The guide plate (12) is provided with inclined holes symmetrically distributed along the guide plate (12). The guide plate (12) is slidably connected to the adjacent guide frames (11) through the inclined holes. A fourth spring (13) is fixedly connected between the box body (1) and the guide plate (12).

9. A pea seedling delivery box with a fixed protection function according to claim 8, characterized in that: It further includes clamping plates (14) symmetrically distributed along the box body (1). The clamping plates (14) are slidably connected to the inside of the box body (1). The clamping plates (14) are provided with wedge-shaped blocks (15) symmetrically distributed along the clamping plates (14). The wedge-shaped blocks (15) are in extrusion fit with the adjacent L-shaped sliding plates (9). A fifth spring (16) is fixedly connected between the clamping plates (14) and the box body (1).

10. A pea seedling delivery box with a fixed protection function according to claim 9, characterized in that: The wedge-shaped blocks (15) are slidably connected to the adjacent clamping plates (14). A tension spring (17) is fixedly connected between the wedge-shaped blocks (15) and the adjacent clamping plates (14).

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