Discharging box

Abstract

The utility model discloses a discharging box, which belongs to the technical field of storage equipment, and comprises a box body and two box bottoms, the box bottoms are hinged with the box body, and the two box bottoms are opened in a split mode; the device further comprises two box bottom synchronous structures, and the two box bottom synchronous structures are arranged on the two opposite sides of the box body in the extending direction of the rotation axis of the box bottom. Each box bottom synchronous structure comprises two pulling plates, a connecting plate and a hook. The two pulling plates are correspondingly connected with the two box bottoms respectively, one ends of the pulling plates are rotationally connected with the box bottoms, and the other ends of the pulling plates are rotationally connected with the connecting plates; and the hook is connected with the connecting plate. By arranging the box bottom synchronous structure, only the box bottom needs to bear the load when the unloading box is transferred, so that the load-bearing requirement on the box body can be correspondingly reduced, and the manufacturing cost of the unloading box is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of storage equipment, in particular to a discharging box. Background Art

[0002] During the factory production process, a lot of scraps are generated, which are generally stored in a discharging box; when transfer and transportation are needed, the discharging box is lifted, and the materials in the discharging box are transferred to the hopper of a transport vehicle. During the loading process, the operator needs to get on and off the vehicle for operation, which not only takes a lot of time, but also has a risk of falling when getting on and off the vehicle, and there is also a risk of scratching the skin by the scraps on the vehicle. In order to achieve safer and more efficient waste loading, the discharging box needs to be improved.

[0003] The utility model patent with the publication (announcement) number of CN220549359U discloses a stackable waste collection and loading and unloading box. The bottom plate of the box body of the loading and unloading box is divided into a first bottom plate and a second bottom plate. The first bottom plate and the second bottom plate are respectively rotatably connected to the box body. The first bottom plate and the second bottom plate respectively rotate between a first state and a second state relative to the box body. When loading materials, the first bottom plate and the second bottom plate are in the first state, and the first bottom plate and the second bottom plate close the bottom of the box body. When discharging materials, the first bottom plate and the second bottom plate are in the second state, and the first bottom plate and the second bottom plate open the bottom of the box body, realizing fixed-point and rapid discharging of the loading and unloading box, without manual dumping, with high discharging efficiency and high safety. Since the lifting lugs of the loading and unloading box are located at the upper part of the box body, during the transfer and discharging process, when lifting the loading and unloading box and the goods, the whole loading and unloading box bears the weight, which requires high strength for each part of the loading and unloading box, and the manufacturing and use costs are also relatively high. Utility Model Content

[0004] For the problems existing in the prior art, the utility model provides a discharging box, which optimizes the structure of the discharging box and reduces the manufacturing and use costs.

[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] The utility model provides a discharging box, which comprises a box body and two bottom plates. The bottom plates are hinged to the box body, and the two bottom plates are opened in an opposite-opening manner; the discharging box further comprises two groups of bottom plate synchronization structures. Along the extending direction of the rotation axis of the bottom plates, the two groups of bottom plate synchronization structures are respectively arranged on the opposite sides of the box body; each group of bottom plate synchronization structures comprises two pull plates, a connecting plate and a hook; the two pull plates are respectively correspondingly connected to the two bottom plates, one end of the pull plate is rotatably connected to the bottom plate, and the other end is rotatably connected to the connecting plate; the hook is connected to the connecting plate.

[0007] In the above-mentioned discharging box, a pop-up mechanism is further included. The pop-up mechanism comprises a hanging handle, a hanging ring, a connecting rod and a tongue

[0008] The hook can swing close to or away from the box body; the upper end of the hook has a hanging portion extending towards the box body, the hanging portion is inclined towards the hanging surface of the box body and faces the box body, and the hanging surface has a concave recess; the tongue is hinged to the hook, and a second elastic member is provided between the tongue and the hook. Under the action of the second elastic member, the tongue blocks at the opening of the recess;

[0009] The hanging handle is slidably mounted on the box body and can move up and down relative to the box body;

[0010] The connecting rod is connected to the hanging handle and is corresponding to the position of the hook, and can be hooked or separated from the recess;

[0011] The hanging ring is connected to the connecting rod or the hanging handle.

[0012] In the above-mentioned discharging box, the hanging ring can swing relative to the hanging handle;

[0013] And / or, the number of the hanging handles is two, the connecting rod is located between the two hanging handles, and the hanging ring is rotatably connected to the connecting rod;

[0014] And / or, the second elastic member is a torsion spring.

[0015] In the above-mentioned discharging box, the upper end of the hanging handle is connected to the connecting rod, and a limiting component is arranged at the lower end.

[0016] In the above-mentioned discharging box, the limiting component includes a limiting block, and the limiting block is connected to the hanging handle.

[0017] In the above-mentioned discharging box, a first elastic member is arranged between the limiting block and the box body, one end of the first elastic member abuts against the box body, and the other end abuts against the limiting block.

[0018] In the above-mentioned discharging box, a plurality of rib plates are arranged on the box body, and the rib plates are fixed on both sides of the hanging handle; during discharging, the limiting block abuts against the rib plates.

[0019] In the above-mentioned discharging box, a positioning pin shaft is arranged between the tongue and the hook, and the positioning pin shaft can be inserted and pulled out. When the positioning pin shaft is inserted into the tongue and the hook, the opening of the recess is opened;

[0020] And / or, the tongue includes two locking tongues and a limiting plate. The two locking tongues are arranged in parallel and at intervals, and the limiting plate is located between the two locking tongues and fixedly connected to the two locking tongues; the locking tongues are respectively located on both sides of the hook, and the limiting plate is located in the concave portion of the hook.

[0021] In the above-mentioned discharging box, a top plate is provided on the box body, and the upper side surface of the top plate extends obliquely downward and outward; a sliding plate is provided on the hook, and the sliding plate cooperates with the top plate to push the hook away from the box body during the downward sliding process of the hook.

[0022] In the above-mentioned discharging box, a guiding plate is fixedly installed on the outer side wall of the box body corresponding to the position of the connecting plate, and the connecting plate is slidably arranged on the guiding plate;

[0023] And / or, a plurality of rollers are installed on the outer side surface of the box bottom;

[0024] And / or, a swivel joint is provided between the connecting plate and the hook. The lower end of the swivel joint is rotatably connected to the connecting plate through a connecting shaft, and the upper end is rotatably connected to the hook through a rotating shaft; the rotating shaft is perpendicular to the connecting shaft.

[0025] The beneficial effects of the present utility model are shown in:

[0026] 1) By setting the box bottom synchronization structure, only the box bottom needs to bear the weight during the transfer of the discharging box. Therefore, the weight-bearing requirement for the box body can be correspondingly reduced, and the manufacturing cost of the discharging box can be reduced;

[0027] 2) The application of the ejection mechanism enables the normal opening of the box bottom without the need for personnel to get on and off the vehicle to replace the hook; the safety hazard problem of getting on and off the vehicle is solved;

[0028] 3) Whether it is the box bottom synchronization structure or the ejection mechanism, the structure is simple, the cost is low, it is durable, and it is suitable for working in harsh environments;

[0029] 4) The discharging box omits the process of the operator getting on and off the vehicle, speeds up the discharging speed, and improves the efficiency of the discharging work. Description of the Drawings

[0030] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the discharging box of the present utility model;

[0031] Figure 2 For Figure 1 The enlarged view of area A1 in

[0032] Figure 3 It is a schematic diagram of the structure of the tongue in an embodiment of the discharging box of the present utility model;

[0033] Figure 4 Side view of an embodiment of the discharge box of the present utility model;

[0034] Figure 5 is Figure 4 Enlarged view of area D in;

[0035] Figure 6 Schematic diagram of the state of step 1 when the discharge box of the present utility model is in use;

[0036] Figure 7 is Figure 6 Enlarged view of area A2 in;

[0037] Figure 8 Schematic diagram of the state of step 2 when the discharge box of the present utility model is in use;

[0038] Figure 9 is Figure 8 Enlarged view of area A3 in;

[0039] Figure 10 Schematic diagram of the state of step 4 when the discharge box of the present utility model is in use;

[0040] Figure 11 is Figure 10 Enlarged view of area A4 in;

[0041] Figure 12 Schematic diagram of the state of relative sliding between the connecting rod and the hook when the connecting rod is lifted in step 5 when the discharge box of the present utility model is in use;

[0042] Figure 13 is Figure 12 Enlarged view of area A5 in;

[0043] Figure 14 Schematic diagram of the state after the connecting rod and the hook slide away from each other in step 5 when the discharge box of the present utility model is in use;

[0044] Figure 15 is Figure 14 Enlarged view of area A6 in;

[0045] Figure 16 Schematic diagram of the state of step 6 when the discharge box of the present utility model is in use;

[0046] Figure 17 Schematic diagram of the state of step 7 when the discharge box of the present utility model is in use;

[0047] Figure 18 is Figure 17 Enlarged view of area A7 in.

[0048] In the figure:

[0049] 1 - Box body; 2 - Bottom of the box; 3 - Pulling plate; 4 - Roller; 5 - Guide plate; 6 - Guide groove; 7 - First guide shaft; 8 - Connecting plate; 9 - Connecting shaft; 10 - Hook; 11 - Rotating shaft; 12 - Limit block; 13 - Adapter; 14 - First elastic member; 15 - Rib plate; 16 - Frame; 17 - Hanging handle; 18 - Tongue; 19 - Second elastic member; 20 - Hanging ring; 21 - Concave portion; 22 - Hanging surface; 23 - Positioning pin shaft; 24 - Connecting rod; 25 - Slide plate; 26 - Top plate; 27 - Locking tongue; 28 - Second mounting hole; 29 - First mounting hole; 30 - Limit plate. Detailed implementation manner

[0050] For the convenience of those skilled in the art to understand, the present utility model will be further described below with reference to the accompanying drawings.

[0051] Please refer to Figures 1 - 5 , which is an embodiment of a discharging box provided by the present utility model, including a box body 1, two bottoms 2 of the box and two groups of bottom synchronization structures; the box body 1 is the main body of the discharging box, the bottom 2 of the box is hinged to the box body 1, and the two bottoms 2 of the box are opened in an opening - out manner. For example, the bottom 2 of the box and the box body 1 are rotationally connected through a hinge structure. In the extending direction of the rotation axis of the bottom 2 of the box, the two groups of bottom synchronization structures are respectively arranged on the opposite sides of the box body 1; each group of bottom synchronization structures includes two pulling plates 3, a connecting plate 8 and a hook 10.

[0052] One end of the pulling plate 3 is rotationally connected to one of the bottoms 2 of the box, and the other end is rotationally connected to the connecting plate 8; thus, the two pulling plates 3 are respectively connected to the two bottoms 2 of the box; as the connecting plate 8 moves up and down, the two bottoms 2 of the box can be opened or closed synchronously. To ensure that the connecting plate 8 moves up and down along the expected movement route, a guide plate 5 is fixed on the outer side wall of the box body 1 corresponding to the position of the connecting plate 8, and the connecting plate 8 is slidably arranged on the guide plate 5; for example, a guide groove 6 is provided on the outer side surface of the guide plate 5, and a first guide shaft 7 is provided on the connecting plate 8, and the first guide shaft 7 is located in the guide groove 6 and can slide up and down relative to the guide groove 6 to guide the up - and - down movement of the connecting plate 8.

[0053] The hook 10 is connected to the connecting plate 8. Preferably, a part of the hook 10 extends to the upper side of the box body 1. The upper end of the hook 10 has a hanging portion extending towards the box body 1, and the overall shape of the hook 10 is similar to an L - shape; the side surface of the hanging portion facing the box body 1 is the hanging surface 22, and the hanging surface 22 has an inward - concave concave portion 21, and the opening of the concave portion 21 faces downwards.

[0054] During use, the pulling force of the lifting hook is applied to the bottom plate 2 through the hook 10, the connecting plate 8, and the pulling plate 3 to lift the discharging box and the goods inside the box body 1. The setting of the bottom plate synchronization structure enables the box body 1 not to bear the pulling force of the lifting hook during the transfer of the discharging box, and only the bottom plate 2 bears the weight of the box body 1 and the goods. In this way, the strength of the bottom plate 2 can be correspondingly increased, and the structural strength requirement of the box body 1 is relatively low, which can reduce the overall manufacturing cost of the discharging box; during discharging, the lifting hook can be hung at an appropriate position of the box body 1, such as the lifting ring 20 on the upper part of the box body 1, and the lifting lug is hung on the lifting ring 20; since the upper pulling force of the connecting plate 8 is lost, the two bottom plates 2 can be opened under the action of the gravity of the goods, facilitating discharging.

[0055] Rollers 4 are installed on the outer side surface of the bottom plate 2. When the discharging box is placed on the ground after discharging is completed, the rollers 4 come into contact with the ground first, which can prevent the bottom plate 2 from being knocked and worn; at the same time, the bottom plate 2 is in rolling contact with the ground through the rollers 4, which can reduce the resistance of the bottom plate 2 to close. When the discharging box is falling, the two bottom plates 2 gradually close, pushing the pulling plate 3 and the connecting plate 8 to move upward until the bottom plate 2 is reset to its closed state.

[0056] The connecting plate 8 is preferably a triangular plate. Two pin shafts and a connecting shaft 9 are provided on the connecting plate 8, and the two pin shafts and the connecting shaft 9 are respectively located at the three apex angles of the connecting plate 8. The two pin shafts are used to connect the two pulling plates 3 respectively, and the hook 10 is connected to the connecting shaft 9. Preferably, the two pin shafts are symmetric with respect to the central cross-section of the guide groove 6; the connecting shaft 9 is parallel to the first guide shaft 7 and is arranged at an upper and lower interval. One end of the connecting shaft 9 can also extend into the guide groove 6 to cooperate with the first guide shaft 7 to jointly guide the up and down movement of the connecting plate 8; the structure of the connecting plate 8 is simple and the connection stability is good.

[0057] The hook 10 is preferably swingable relative to the box body 1, which is convenient for adjusting the attitude and position of the hook 10 during use. As an implementation manner of the swing connection between the hook 10 and the box body 1, a swivel joint 13 is provided between the connecting plate 8 and the hook 10. The lower end of the swivel joint 13 is rotatably installed on the connecting shaft 9, and the upper end is rotatably connected to the hook 10 through a rotating shaft 11; the rotating shaft 11 is perpendicular to the connecting shaft 9, enabling the hook 10 to have multiple degrees of freedom in the free state, which is convenient for adjusting the position of the hook 10 during use; when necessary, the swivel joint 13 is rotated to lay the hook 10 flat to avoid the hook 10 being too high to affect placement. For example, when the box body 1 is placed in a pit, laying the hook 10 flat facilitates the addition of the pit cover plate.

[0058] Further, the unloading box also has a pop-up mechanism that automatically releases the hook 10 from the hanging connection with the lifting hook during unloading, solving the safety risk problem caused by personnel getting on and off the vehicle to change the hanging position between the lifting hook and the unloading box, and also improving the loading and unloading efficiency. Specifically, the pop-up mechanism includes a hanging handle 17, a hanging ring 20, a connecting rod 24, and a tongue 18. The box body 1 has a frame 16 and box plates. The frame 16 constitutes the main structure of the box body 1, and the box plates are installed on the frame 16, enclosing a space for storing goods inside. The hanging handle 17 is slidably installed on the frame 16 and can move up and down relative to the box body 1; the connecting rod 24 is connected to the hanging handle 17 and moves up and down with the hanging handle 17; the hanging ring 20 is connected to the hanging handle 17 or the connecting rod 24 and also moves up and down synchronously with the hanging handle 17. The position of the connecting rod 24 corresponds to the position of the hook 10 and can be inserted into or slid out of the recess 21.

[0059] Correspondingly, the hanging handle 17 has a limiting structure to prevent the hanging handle 17 from detaching from the box body 1. For example, both ends of the hanging handle 17 are located on the upper and lower sides of the frame 16 respectively. The upper end of the hanging handle 17 is connected to the connecting rod 24, and a limiting component is arranged at the lower end. The limiting component can limit the extreme position when the hanging handle 17 moves upward; the limiting component includes a limiting block 12. The limiting block 12 can be an integral structure with the hanging handle 17 or a split assembly structure; if the limiting block 12 is a split structure with the hanging handle 17, a thread is arranged at the lower end of the hanging handle 17, the limiting block 12 is sleeved outside the hanging handle 17, and a compression nut is threadedly connected to the lower end of the hanging handle 17, and the compression nut supports on the lower side of the limiting block 12.

[0060] Further, a first elastic member 14 is provided between the limiting block 12 and the box body 1. The first elastic member 14 can be a spring or a rubber pad, etc. The first elastic member 14 is sleeved on the hanging handle 17, with one end abutting against the box body 1 and the other end abutting against the limiting block 12. The hanging handle 17 can move up and down on the box body 1 against the first elastic member 14. The first elastic member 14 can assist the connecting rod 24 to disengage from the recess 21.

[0061] The connecting rod 24 preferably extends horizontally; the number of hanging handles 17 is preferably two, and the connecting rod 24 is located between the two hanging handles 17. The hanging ring 20 is connected to the connecting rod 24, and the overall structure of the hanging ring 20, the connecting rod 24, and the hanging handle 17 is compact, reducing the installation space.

[0062] The hanging ring 20 can swing relative to the hanging handle 17 to provide the best lifting posture for the unloading box. In specific implementation, it can be that the connecting rod 24 is fixedly connected to the hanging handle 17 and the hanging ring 20 is rotatably connected to the connecting rod 24; or the hanging ring 20 is fixedly connected to the connecting rod 24 and the connecting rod 24 is rotatably connected to the hanging handle 17. Or, both the hanging ring 20 and the connecting rod 24 and the connecting rod 24 and the hanging handle 17 are hinged, all of which can realize the swinging of the hanging ring 20.

[0063] The tongue 18 is hinged to the hook 10, and a second elastic member 19 is further provided between the tongue 18 and the hook 10. Under the action of the second elastic member 19, the tongue 18 blocks the opening of the recess 21, preventing the connecting rod 24 from entering the recess 21. The hanging surface 22 is an inclined surface facing the box body 1. When discharging, when the connecting rod 24 cannot enter the recess 21 and slides relative to the hook 10, the hanging surface 22 can also guide the hook 10 to swing outwards.

[0064] Furthermore, the ejection mechanism further includes a positioning pin 23 which can be inserted and pulled out relative to the tongue 18 and the hook 10. When the positioning pin 23 is inserted into the tongue 18 and the hook 10, the tongue 18 avoids the opening of the recess 21, and the connecting rod 24 can enter the recess 21.

[0065] Specifically, the tongue 18 includes two locking tongues 27 and a limiting plate 30. The two locking tongues 27 are arranged in parallel and at intervals, and the limiting plate 30 is located between the two locking tongues 27 and is fixedly connected to the two locking tongues 27. The locking tongues 27 are respectively located on both sides of the hook 10, and the limiting plate 30 is located inside the recess 21. The locking tongues 27 are provided with a first mounting hole 29 and a second mounting hole 28. The hook 10 is respectively provided with through holes at positions corresponding to the first mounting hole 29 and the second mounting hole 28. The rotation connection between the tongue 18 and the hook 10 is realized through a pin shaft located in the first mounting hole 29. The second elastic member 19 can be a torsion spring. The torsion spring is sleeved on the pin shaft, with one end abutted against the hook 10 and the other end abutted against the locking tongue 27. The positioning pin 23 is installed in the second mounting hole 28 to lock the positions of the tongue 18 and the hook 10. The limiting plate 30 can assist in positioning the tongue 18 and the hook 10, facilitating the insertion and extraction of the positioning pin 23.

[0066] The hook 10 may not be able to open completely. For example, when the discharging box is tilted, there is a risk that the hook 10 gets stuck on the box body 1 during the downward sliding process. Therefore, a top plate 26 is provided on the frame 16, and the upper side surface of the top plate 26 extends obliquely downward and outward. The hook 10 is provided with a sliding plate 25, and the sliding plate 25 is located below the tongue 18. The top plate 26 of the box body 1 cooperates with the sliding plate 25 during the downward sliding process of the hook 10, and will continue to push open the hook 10 so that the hook 10 does not contact the box body 1.

[0067] Furthermore, a plurality of rib plates 15 are provided on the box body 1. The rib plates 15 are fixed on both sides of the hanging handle 17 and extend vertically for a certain length. When the overall weight of the goods and the discharging box is too large, the rib plates 15 abut against the limiting block 12 of the hanging handle 17 to prevent the first elastic member 14 from being excessively compressed and failing.

[0068] The process of hoisting and discharging the discharging box includes:

[0069] Step 1: Hang the hook on the lifting ring 20, and raise the hook, driving the lifting ring 20, the connecting rod 24, and the lifting handle 17 to rise against the elastic force of the first elastic member 14 until the hook 10 is hung on the connecting rod 24, as shown in Figure 6 and Figure 7 . At this time, the limit block 12 and the rib plate 15 are not in contact.

[0070] Step 2: Pull out the positioning pin shaft 23. At this time, the tongue 18 is opened under the elastic force of the second elastic member 19. Since the connecting rod 24 is located in the concave portion 21, the tongue 18 cannot continue to rotate towards the opening of the concave portion 21, but abuts against the outside of the connecting rod 24, as shown in Figure 8 and Figure 9 .

[0071] Step 3: Continue to lift the hook and lift the unloading box onto the truck bed. During the process of transferring the unloading box onto the truck bed, the gravity of the entire unloading box and the internal goods acts on the connecting rod 24 and the lifting ring 20 through the hook 10.

[0072] Step 4: After the unloading box is placed on the truck bed, lower the hook so that the lifting chain is completely slack. At this time, due to the loss of the pulling force of the hook, the lifting handle 17 and the connecting rod 24 are lowered close to the box body 1 under the action of the first elastic member 14 and their own gravity, and the connecting rod 24 is disengaged from the hook 10. After the tongue 18 loses the obstruction of the connecting rod 24, under the elastic force of the second elastic member 19, the tongue 18 rotates towards the opening of the concave portion 21 of the hook 10 and opens completely, covering the opening of the concave portion 21, as shown in Figure 10 and Figure 11 .

[0073] Step 5: Lift the hook, driving the lifting ring 20 and the lifting handle 17 to rise against the elastic force of the first elastic member 14. At this time, since the tongue 18 is completely opened, it obstructs the connecting rod 24 from entering the concave portion 21 of the hook 10, as shown in Figure 12 and Figure 13 . The connecting rod 24 slides relative to the hook 10. As the lifting handle 17 continues to rise, it pushes open the tongue 18 and the hook 10. Subsequently, the hook 10 is completely opened under the action of gravity. After the hook 10 is completely disengaged from the connecting rod 24, continue to lift the hook until the limit block 12 and the rib plate 15 are in contact, as shown in Figure 14 and Figure 15 .

[0074] Step 6: Continue to lift the hook. Since the limit block 12 and the rib plate 15 are in contact, the lifting handle 17 drives the box body 1 to rise together. The bottom 2 of the box is subjected to the gravity of the goods. Since the hook 10 and the connecting rod 24 are disengaged, the bottom 2 of the box cannot be held, and the bottom 2 of the box opens in a split manner, and the pull plate 3 also opens. The connecting plate 8 and the hook 10 slide down along the guide groove 6, as shown in Figure 16As shown; during the downward sliding process, the top plate 26 of the box body 1 will continue to push open the hook 10, so that the hook 10 does not contact the box body 1 until the bottom of the box 2 is completely opened and the goods are separated from the box body 1, completing the unloading.

[0075] Step Seven: Lift the unloading box to the ground and lower it slowly. The rollers 4 at the bottom of the box 2 first contact the ground and gradually and automatically close the bottom of the box 2 during the descent; at the same time, parts such as the connecting plate 8 and the hook 10 gradually rise under the jacking force of the pulling plate 3; continue to lower the lifting hook so that the sling becomes slack and is not stressed, remove the lifting hook, and the lifting handle 17, the connecting rod 24, and the lifting ring 20 return to their original positions, as Figure 17 and Figure 18 shown.

[0076] Step Eight: Press the tongue 18 and insert the positioning pin shaft 23, referring to the states shown in Figure 1 and Figure 2 ; thus, the entire unloading work process is completed.

[0077] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A discharging box, comprising a box body (1) and two box bottoms (2), wherein the box bottoms (2) are hinged to the box body (1), and the two box bottoms (2) are opened in a split manner; characterized in that, It further includes two sets of bottom box synchronization structures. Along the extending direction of the rotation axis of the bottom box (2), the two sets of bottom box synchronization structures are respectively arranged on the opposite sides of the box body (1); each set of bottom box synchronization structures includes two pull plates (3), a connecting plate (8) and a hook (10); the two pull plates (3) are respectively correspondingly connected to the two bottom boxes (2), one end of the pull plate (3) is rotatably connected to the bottom box (2), and the other end is rotatably connected to the connecting plate (8); the hook (10) is connected to the connecting plate (8).

2. The discharging box according to claim 1, characterized in that, It further includes a pop-up mechanism, and the pop-up mechanism includes a hanging handle (17), a hanging ring (20), a connecting rod (24) and a tongue (18); The hook (10) can swing close to or away from the box body (1); the upper end of the hook (10) has a hanging part extending towards the box body (1), the hanging part is inclined towards the hanging surface (22) of the box body (1) and towards the box body (1), and the hanging surface (22) has a concave part (21); the tongue (18) is hinged to the hook (10), and a second elastic member (19) is arranged between the tongue (18) and the hook (10). Under the action of the second elastic member (19), the tongue (18) blocks at the opening of the concave part (21); The hanging handle (17) is slidably installed on the box body (1) and can move up and down relative to the box body (1); The connecting rod (24) is connected to the hanging handle (17), and the position corresponds to the position of the hook (10), and can be hooked or separated from the concave part (21); The hanging ring (20) is connected to the connecting rod (24) or the hanging handle (17).

3. The discharge box according to claim 2, characterized in that, The hanging ring (20) can swing relative to the hanging handle (17); and / or, the number of the hanging handles (17) is two, the connecting rod (24) is located between the two hanging handles (17), and the hanging ring (20) is rotatably connected to the connecting rod (24); and / or, the second elastic member (19) is a torsion spring.

4. A discharge box according to claim 3, characterized in that, The upper end of the hanging handle (17) is connected to the connecting rod (24), and a limiting component is arranged at the lower end.

5. A discharging box according to claim 4, wherein, The limiting component includes a limiting block (12), and the limiting block (12) is connected to the hanging handle (17).

6. The discharging box according to claim 5, characterized in that, A first elastic member (14) is arranged between the limiting block (12) and the box body (1), one end of the first elastic member (14) abuts against the box body (1), and the other end abuts against the limiting block (12).

7. A discharging box according to claim 6, wherein, A plurality of rib plates (15) are arranged on the box body (1), and the rib plates (15) are fixed on both sides of the hanging handle (17); during unloading, the limiting block (12) abuts against the rib plates (15).

8. A discharge box according to claim 2, characterized in that, A positioning pin shaft (23) is arranged between the tongue (18) and the hook (10), and the positioning pin shaft (23) can be inserted and pulled out. When the positioning pin shaft (23) is inserted into the tongue (18) and the hook (10), the opening of the concave part (21) is opened; And / or, the tongue (18) includes two locking tongues (27) and a limiting plate (30). The two locking tongues (27) are arranged in parallel and at intervals. The limiting plate (30) is located between the two locking tongues (27) and fixedly connected to the two locking tongues (27). The locking tongues (27) are respectively located on both sides of the hook (10), and the limiting plate (30) is located in the recess (21) of the hook (10).

9. The discharge box according to claim 2, wherein, A top plate (26) is provided on the box body (1). The upper side surface of the top plate (26) extends obliquely downward and outward. A sliding plate (25) is provided on the hook (10). The sliding plate (25) cooperates with the top plate (26) to push the hook (10) away from the box body (1) during the downward sliding process of the hook (10).

10. A discharging box according to claim 1, characterized in that, A guide plate (5) is fixed on the outer side wall of the box body (1) corresponding to the position of the connecting plate (8). The connecting plate (8) is slidably arranged on the guide plate (5). And / or, a plurality of rollers (4) are installed on the outer side surface of the box bottom (2). And / or, a swivel joint (13) is provided between the connecting plate (8) and the hook (10). The lower end of the swivel joint (13) is rotatably connected to the connecting plate (8) through a connecting shaft (9), and the upper end is rotatably connected to the hook (10) through a rotating shaft (11). The rotating shaft (11) is perpendicular to the connecting shaft (9).

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