Turnover box feeding device

Abstract

The utility model discloses a turnover box feeding device which comprises a frame body. The first supporting beam is transversely arranged and slides up and down on the frame main body through a lifting component; the grabbing component comprises a second supporting beam slidably mounted on the first supporting beam, a first grabbing assembly and a second grabbing assembly, and the first grabbing assembly is provided with first grabbing plates driven to be close to or away from each other in the transverse direction; the second grabbing assembly is provided with a pair of longitudinally-arranged second grabbing plates which are driven to be turned over downwards from the horizontal direction to the vertical position to support the upper portion of the turnover box. According to the turnover box feeding device, the first supporting beam ascends and descends on the frame main body, the second supporting beam transversely moves on the first supporting beam, turnover boxes at different positions can be fed, the pair of first grabbing plates are close to or far away from each other, and the pair of second grabbing plates overturn between the horizontal position and the vertical position, so that the turnover box feeding efficiency is improved. And the turnover box can be grabbed and released, and the turnover box grabbing and releasing device can meet the use requirements of turnover boxes of different forms.

Description

Technical Field

[0001] The utility model relates to the field of logistics transportation, and particularly relates to a turnover box loading device. Background Art

[0002] Turnover boxes can be used in transportation, distribution, storage, circulation processing and other links in factory logistics, and can centrally summarize parts to avoid omission or uneven placement of parts during transportation;

[0003] Taking the transportation of medical turnover boxes as an example, the method of manually placing turnover boxes on the conveyor line has a large labor intensity and low efficiency, and cannot meet the feeding and transportation of a large number of turnover boxes. Traditional automatic feeding mainly uses a hoist, that is, the turnover box is transported to a designated position, and the hoist lifts the turnover box to a certain height and then transports and feeds it. Although this method can lift and feed in height, when feeding laterally, the hoist needs to be installed on a mobile trolley, which is likely to cause too much space occupation. In addition, due to the different sizes, shapes and positions of turnover boxes, a single grasping component cannot meet the requirements during the feeding and collection of turnover boxes, and the applicability is poor. Summary of the Invention

[0004] The purpose of the utility model is to provide a turnover box loading device, which occupies a small space, can not only load turnover boxes at different positions, but also grasp and release turnover boxes in different forms, meet the use of turnover boxes of different sizes or weights, and has stronger applicability.

[0005] To achieve the above purpose, a turnover box loading device includes:

[0006] A frame body;

[0007] A first support beam, arranged horizontally and sliding up and down on the frame body through a lifting component;

[0008] A grasping component, including:

[0009] A second support beam, arranged longitudinally and driven to slide and installed on the first support beam;

[0010] A first grasping assembly, having a first support plate and a pair of first grasping plates installed on the first support plate; wherein, the first support plate is connected to the second support beam, and the pair of first grasping plates are symmetrically arranged horizontally and are driven to approach or separate from each other;

[0011] A pair of second grasping assemblies, longitudinally located on both sides of the first grasping assembly. Each second grasping assembly has a second support plate and a second grasping plate rotatably installed on the second support plate. The end of the second grasping plate that flips close to the turnover box is an L-shaped structure; wherein, the second support plate is connected to the second support beam, and the second grasping plate is driven to flip from a horizontal position downward to a vertical position to support the upper part of the turnover box;

[0012] The first grasping plate and the second grasping plate are respectively located on both sides of the turnover box and can act on the turnover box.

[0013] In some examples of the present utility model, the lifting component includes:

[0014] The first guide wheel and the second guide wheel are respectively installed at the upper end of the frame body and are located at both ends of the first support beam;

[0015] The first chain and the second chain are respectively located at both ends of the first support beam. One end of the first chain is connected to the first support beam, and the other end is wound around the outside of the first guide wheel and then connected to the corresponding counterweight; one end of the second chain is connected to the first support beam, and the other end is wound around the outside of the second guide wheel and then connected to the corresponding counterweight;

[0016] The first guide wheel and the second guide wheel are respectively connected to the drive motor for synchronous rotation;

[0017] Or the first guide wheel is connected to the drive motor, and the second guide wheel is connected to the first guide wheel through a transmission chain for synchronous rotation.

[0018] In some examples of the present utility model, the lifting component further includes:

[0019] The first double pulley, the second double pulley, and the third double pulley;

[0020] The transmission chain is wound around the outside of the same-side teeth of the second double pulley and the third double pulley, and a tensioning wheel is provided on the transmission chain;

[0021] The first double pulley is connected to the other side teeth of the second double pulley for power transmission;

[0022] The first chain is wound around the outside of the other teeth of the first double pulley, and the second chain is wound around the outside of the other teeth of the third double pulley.

[0023] In some examples of the present utility model, the frame body has a plurality of vertically arranged columns;

[0024] The counterweight is installed on the support plate;

[0025] The support plate is slidably located in the column through a vertically arranged guide rod and is connected to the first chain or the second chain.

[0026] In some examples of the present utility model, the first grasping assembly further includes:

[0027] The support sliding plate is driven and installed on the second support beam;

[0028] The lifting motor is fixed on the support sliding plate, and the output end is connected to the first support plate and drives the first support plate to move up and down relative to the support sliding plate.

[0029] In some examples of the present utility model, the second grasping assembly further includes:

[0030] A driving member, fixedly installed on the second support plate, and the output end is connected to the support shaft;

[0031] A support shaft, rotatably installed on the second support plate;

[0032] Wherein, one end of the second grasping plate is fixedly connected to the support shaft.

[0033] In some examples of the present utility model, the end of the second grasping plate close to the flipping axis is of an L-shaped structure;

[0034] When the second grasping plate is flipped downward to the vertical state, the upper part of the second grasping plate contacts the second support plate for limiting.

[0035] In some examples of the present utility model, the support sliding plate and the second support plate are respectively driven to move on the second support beam through electric cylinders.

[0036] Compared with the prior art, on the one hand, the feeding device for turnover boxes of the present invention can feed turnover boxes at different positions by moving up and down on the frame main body through the first support beam and moving horizontally on the first support beam by the second support beam, especially for a relatively long horizontal distance, avoiding the situation of excessive space occupation caused by using a mobile trolley for lifting in the traditional way. On the other hand, a pair of first grasping plates approach or move away from each other, and a pair of second grasping plates flip between the horizontal and vertical positions, correspondingly realizing the grasping and releasing of the turnover box, which can meet the use of different forms of turnover boxes and has stronger applicability; in addition, the support sliding plate moves longitudinally on the second support beam, which can adjust the longitudinal position of the first grasping plate, and the second support plate moves longitudinally on the second support beam, which can adjust the longitudinal position of the second grasping plate, and is applicable to turnover boxes of different sizes;

[0037] Since the lifting component drives the first support beam to achieve rapid rough positioning in height, and the lifting motor drives the first support plate to move up and down through the support sliding plate to adjust the height position of the first grasping plate for fine positioning, the first grasping component can better act on the lateral side of the turnover box. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is the overall schematic diagram of the present utility model;

[0039] Figure 2 is the front view of the lifting component part of the present utility model;

[0040] Figure 3 is the top view sketch of the lifting component part of the present utility model;

[0041] Figure 4It is a schematic diagram of the assembly of the lifting component and the frame body in the present utility model;

[0042] Figure 5 It is a partially enlarged view in the figure;

[0043] Figure 6 It is a schematic diagram of the grasping component in the present utility model;

[0044] Figure 7 It is a schematic diagram of the first grasping assembly in the present utility model;

[0045] Figure 8 It is a schematic diagram of the second grasping assembly in the present utility model;

[0046] Figure 9 It is a schematic diagram of the assembly of the lifting motor, the support sliding plate and the second support beam in the present utility model;

[0047] In the figure: 10, frame body;

[0048] 21, drive motor, 22, tensioning wheel, 23, drive chain, 24, first double pulley, 251, first guide wheel, 252, second guide wheel, 261, first chain, 262, second chain, 27, second double pulley, 28, third double pulley, 291, counterweight, 292, guide rod 292;

[0049] 30, first support beam;

[0050] 40, grasping component, 41, second support beam, 42, support sliding plate, 43, lifting motor, 44, first grasping assembly, 441, first support plate, 442, cylinder, 443, first grasping plate;

[0051] 45, second grasping assembly, 451, second support plate, 452, drive member, 453, support shaft, 454, second grasping plate. Detailed implementation manners

[0052] In order to make the purpose, technical solutions and advantages of the technical solutions of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present utility model. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0053] Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings as understood by those of ordinary skill in the art to which this utility model pertains. The terms "first", "second" and similar terms used in the description and claims of this utility model patent application do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, terms such as "a" or "an" do not necessarily denote a quantity limitation. Terms such as "comprising" or "including" mean that the elements or objects appearing before this term cover the elements or objects listed after this term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "upper", "lower", "left", "right" are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0054] As Figure 1 、 Figure 4 、 Figures 6 to 8 shown, a feeding device for a turnover box of the present invention includes:

[0055] A frame body 10;

[0056] A first support beam 30, arranged horizontally and connected to a lifting component to slide up and down on the frame body 10;

[0057] A grasping component 40, including:

[0058] A second support beam 41, arranged longitudinally and driven to be slidably installed on the first support beam 30;

[0059] A first grasping assembly 44, having a first support plate 441 and a pair of first grasping plates 443 installed on the first support plate 441; wherein, the first support plate 441 is connected to the second support beam 41, and the pair of first grasping plates 443 are arranged symmetrically horizontally and are driven to approach or separate from each other;

[0060] A pair of second grasping assemblies 45, longitudinally located on both sides of the first grasping assembly 44. Each second grasping assembly 45 has a second support plate 451 and a second grasping plate 454 rotatably installed on the second support plate 451. The end of the second grasping plate 454 that flips close to the turnover box is of an L-shaped structure; wherein, the second support plate 451 is connected to the second support beam 41, and the second grasping plate 454 is driven to flip from a horizontal position downward to a vertical position to support the upper part of the turnover box;

[0061] The first grasping plate 443 and the second grasping plate 454 are respectively located on both sides of the turnover box and can act on the turnover box;

[0062] Specifically, the frame body 10 adopts a four-corner column structure, that is, the columns are located at the four corners and are interconnected by cross beams at the upper ends; the frame body 10 itself can be assembled by welding materials such as rectangular steel or square steel to play a good supporting role;

[0063] The first support beam 30 is connected to the lifting component and can move up and down on the frame body 10;

[0064] The grasping component 40 is located on the first support beam 30. On the one hand, it moves horizontally. For example, the second support beam 41 in the grasping component 40 moves on the first support beam 30 by means of an electric cylinder, a driving motor 21, etc. On the other hand, it is configured to grasp the turnover box, that is, the first grasping assembly 44 and the second grasping assembly 45;

[0065] When the turnover box loading device is initially used, the first support beam 30 drives the grasping component 40 to be in a relatively high position, and this height ensures that the grasping component 40 does not collide with the turnover box or other process components;

[0066] The first support beam 30 moves up and down on the frame body 10, and the second support beam 41 moves horizontally on the first support beam 30, so that the grasping component 40 is located above the turnover box to be loaded; a pair of first grasping plates 443 in the first grasping assembly 44 approach or move away from each other to grasp and release the two lateral sides of the turnover box, and a pair of second grasping plates 454 in the second grasping assembly 45 are flipped from the horizontal position to the vertical position to support and clamp the two longitudinal sides of the turnover box;

[0067] The first grasping assembly 44 and the second grasping assembly 45 can perform corresponding actions according to the size and shape of the turnover box. For example, when the turnover box is a rectangular box structure and has a relatively small weight, the first grasping plates 443 in the first grasping assembly 44 can perform actions. Specifically, a double-acting cylinder 442 can be provided on the first support plate 441, and the output end of the cylinder 442 is connected to the first grasping plate 443. When the cylinder 442 is started, a pair of first grasping plates 443 approach or move away from each other; for example, when the upper part of the turnover box has a protruding edge and a certain weight, the second grasping plates 454 in the second grasping assembly 45 are flipped from the horizontal position to the vertical position to "hook" and support the turnover box through an L-shaped structure; for example, when the turnover box has a relatively large weight, the first grasping plates 443 and the second grasping plates 454 can perform actions simultaneously;

[0068] On the one hand, the loading device for the turnover box can move up and down on the frame main body 10 through the first support beam 30, and the second support beam 41 can move horizontally on the first support beam 30, so as to load the turnover boxes at different positions, especially for a relatively long horizontal distance. On the other hand, a pair of first gripping plates 443 can approach or move away from each other, and a pair of second gripping plates 454 can flip between the horizontal and vertical positions, thereby realizing the gripping and releasing of the turnover box, which can meet the use of different forms of turnover boxes and has stronger applicability.

[0069] In some examples of the present utility model, such as Figures 1 to 5 shown, the lifting component includes:

[0070] The first guide wheel 251 and the second guide wheel 252 are respectively installed at the upper end of the frame main body 10 and located at both ends of the first support beam 30;

[0071] The first chain 261 and the second chain 262 are respectively located at both ends of the first support beam 30. One end of each of the first chain 261 and the second chain 262 is connected to the first support beam 30, and the other end is respectively wound around the outer sides of the first guide wheel 251 and the second guide wheel 252 and then connected to the counterweight 291;

[0072] The first guide wheel 251 and the second guide wheel 252 are respectively connected to the driving motor 21 for synchronous rotation;

[0073] Or the first guide wheel 251 is connected to the driving motor 21, and the second guide wheel 252 is connected to the first guide wheel 251 through the transmission chain 23 for synchronous rotation;

[0074] Specifically, when the driving motor 21 is started, the first guide wheel 251 and the second guide wheel 252 rotate synchronously. The first chain 261 wound around the first guide wheel 251 and the second chain 262 wound around the second guide wheel 252 rotate, and under the action of the counterweight 291, the first support beam 30 moves up and down;

[0075] One end of each of the first chain 261 and the second chain 262 is respectively connected to the counterweight 291, so that the gripping component 40 can act on the relatively heavy turnover box; It should be noted that the number of the first support beams 30 can be a pair arranged longitudinally. At this time, both ends of the second support beam 41 in the gripping component 40 are respectively slidably located on the first support beam 30, which can ensure the stability of the horizontal movement of the gripping component 40.

[0076] In some examples of the present utility model, such as Figures 1 to 4 shown, the lifting component further includes:

[0077] The first double pulley 24, the second double pulley 27, and the third double pulley 28;

[0078] The transmission chain 23 is wound around the outer sides of the same-side teeth of the second double pulley 27 and the third double pulley 28, and a tension pulley 22 is provided on the transmission chain 23;

[0079] The first double pulley 24 is connected to the other-side teeth of the second double pulley 27 for power transmission;

[0080] The first chain 261 is wound around the outer side of the other tooth of the first double pulley 24, and the second chain 262 is wound around the outer side of the other tooth of the third double pulley 28;

[0081] Specifically, the drive motor 21 can be connected to the first double pulley 24 or to the first guide pulley 251; when the first guide pulley 251 and the second guide pulley 252 are respectively connected to the drive motor 21 for synchronous rotation, multiple drive motors 21 are required in this lifting component, and the multiple drive motors 21 are all connected to the controller for synchronous movement. In this case, the control structure is relatively complex, especially when the first support beam 30 is a pair. Therefore, preferably, the second guide pulley 252 is connected to the first guide pulley 251 through the transmission chain 23 for synchronous rotation;

[0082] The first double pulley 24, the second double pulley 27, the third double pulley 28, and the transmission chain 23 are used to ensure the transmission of power. After the drive motor 21 drives the first guide pulley 251 or the first double pulley 24, on the one hand, the second guide pulley 252 can rotate synchronously, and on the other hand, long-distance transmission between the second guide pulley 252 and the first guide pulley 251 can be achieved. At this time, the length of the first support beam 30 is relatively long, which can be applied to the long-distance feeding and conveying of the turnover box in the horizontal direction;

[0083] In addition, a tension pulley 22 is provided on the transmission chain 23. The tension pulley 22 can be elastically installed and act on the transmission chain 23 to ensure the stability of the transmission chain 23 during long-distance transmission;

[0084] In some examples of the present utility model, such as Figure 1 、 Figure 4 、 Figure 5 shown, the frame body 10 has a plurality of vertically arranged columns;

[0085] The counterweight 291 is installed on the support plate;

[0086] The support plate is slidably located in the column through the vertically arranged guide rod 292 and is connected to the first chain 261 or the second chain 262;

[0087] Specifically, the frame body 10 has hollow columns at the four corners. At this time, the counterweight 291 and the support plate are both located inside the columns, making the whole more beautiful; through holes for the guide rod 292 to pass through are provided on the support plate, that is, when the support plate is pulled by the first chain 261 and the second chain 262, it is limited by the guide rod 292.

[0088] In some examples of the present utility model, such as Figure 6 , Figure 7 , Figure 9 shown, the first grasping assembly 44 further includes:

[0089] A supporting slide plate 42, which is driven and installed on the second support beam 41;

[0090] A lifting motor 43, which is fixed on the supporting slide plate 42, and the output end is connected to the first support plate 441 and drives the first support plate 441 to move up and down;

[0091] Among them, the first support plate 441 is installed on the supporting slide plate 42;

[0092] Specifically, the supporting slide plate 42 can slide on the second support beam 41 through an electric cylinder. At this time, the first support plate 441 and the first grasping plate 443 in the first grasping assembly 44 can move longitudinally on the second support beam 41 to adjust the position. This position adjustment can ensure that the first grasping plate 443 acts on the appropriate longitudinal position of the turnover box, avoiding the problem of uneven weight when grasping the turnover box;

[0093] The output end of the lifting motor 43 is connected to the first support plate 441 and drives the first support plate 441 to move up and down to adjust the height position of the first grasping plate 443, that is, the lifting component drives the first support beam 30 to achieve rapid positioning in height. This positioning is rough positioning. The lifting motor 43 drives the first support plate 441 to move up and down through the supporting slide plate 42 to adjust the height position of the first grasping plate 443. This height positioning is fine positioning. Therefore, the first grasping component 40 can act better on the lateral side of the turnover box;

[0094] In some examples of the present utility model, such as Figures 6 to 8 shown, the second grasping assembly 45 further includes:

[0095] A driving member 452, which is fixedly installed on the second support plate 451, and the output end is connected to the support shaft 453;

[0096] A support shaft 453, which is rotatably installed on the second support plate 451;

[0097] Among them, one end of the second grasping plate 454 is fixedly connected to the support shaft 453;

[0098] Specifically, the driving member 452 can be a motor and can rotate within a certain angle. That is, after the motor is started, it can drive the support shaft 453 to rotate through a conveyor belt, gears, etc. The support shaft 453 will drive the second grasping plate 454 to rotate a certain angle, that is, this angle is 90°.

[0099] In some examples of the present utility model, such as Figure 9 shown, one end of the second grasping plate 454 close to the flipping axis is of an L-shaped structure;

[0100] When the second grasping plate 454 is turned downward to the vertical state, the upper part of the second grasping plate 454 contacts the second support plate 451 for limiting;

[0101] Specifically, in the initial state, the middle part of the second grasping plate 454 is horizontally arranged and abuts against the second support beam 41;

[0102] When the second grasping plate 454 is turned downward to the vertical state, the upper part of the second grasping plate 454 contacts the second support plate 451 for limiting. At this time, it can ensure that the second grasping plate 454 is in the vertical state and avoid excessive angles;

[0103] Alternatively, an angle sensor may be provided on the end side of the support shaft 453, and the controller controls the driving member 452 to stop operating after receiving the angle signal.

[0104] In some examples of the present utility model, the support sliding plate 42 and the second support plate 451 are respectively driven to move on the second support beam 41 by electric cylinders;

[0105] Specifically, the support sliding plate 42 longitudinally moves on the second support beam 41, and can adjust the longitudinal position of the first grasping plate 443 in the first grasping assembly 44; the second support plate 451 longitudinally moves on the second support beam 41, and can adjust the longitudinal position of the second grasping plate 454 in the second grasping assembly 45, and can adapt to turnover boxes of different sizes.

[0106] When this turnover box loading device is in use, the first support beam 30 moves up and down on the frame body 10, and the second support beam 41 moves horizontally on the first support beam 30, so that the grasping component 40 is located above the turnover box to be loaded;

[0107] According to the size, shape, and approximate weight of the turnover box, select the first grasping assembly 44 and the second grasping assembly 45 to act. When the first grasping assembly 44 acts, the support sliding plate 42 moves on the second support beam 41 to adjust the longitudinal position of the first grasping plate 443, and the lifting motor 43 drives the first support plate 441 to move up and down to precisely adjust the height of the first grasping plate 443, and a pair of first grasping plates 443 approach each other to complete the grasping of the turnover box; when the second grasping assembly 45 acts, the second support plate 451 moves on the second support beam 41 to adjust the longitudinal position of the second grasping plate 454, and the driving member 452 drives the second grasping plate 454 to turn from horizontal to vertical through the support shaft 453, and the lower ends of a pair of second turnover plates can "hook" and support the protruding edge of the turnover box to complete the grasping of the turnover box;

[0108] After the turnover box is grasped, the lifting component drives the first support beam 30 to adjust the height, and the second support beam 41 can be horizontally moved on the first support beam 30 to the feeding or collecting position by means of an electric cylinder or the like, and then the first grasping component 44 and the second grasping component 45 are loosened and released, and finally the feeding and collecting of the turnover box are completed.

[0109] In the foregoing, a demonstration implementation manner of a turnover box feeding device proposed by the present utility model has been described in detail with reference to preferred embodiments. However, those skilled in the art can understand that, without departing from the concept of the present utility model, various modifications and changes can be made to the above specific embodiments, and various combinations of various technical features and structures proposed by the present utility model can be made without exceeding the protection scope of the present utility model. The protection scope of the present utility model is determined by the appended claims.

Claims

1. A turnover box feeding device, characterized in that: include: Frame body (10); A first support beam (30) is arranged transversely and slides up and down on the frame body (10) through a lifting component; The grabbing component (40) comprises: A second support beam (41) is longitudinally arranged and driven to slide on the first support beam (30); The first grabbing assembly (44) comprises a first supporting plate (441) and a pair of first grabbing plates (443) mounted on the first supporting plate (441); wherein the first supporting plate (441) is connected to the second supporting beam (41), and the pair of first grabbing plates (443) are arranged symmetrically in the transverse direction and are driven to move closer to or farther from each other; A pair of second grabbing assemblies (45) are longitudinally located on both sides of the first grabbing assembly (44), each set of the second grabbing assemblies (45) comprises a second support plate (451) and a second grabbing plate (454) rotatably mounted on the second support plate (451), and the second grabbing plate (454) is flipped to form an L-shaped structure at one end close to the turnover box; wherein the second support plate (451) is connected to the second support beam (41), and the second grabbing plate (454) is driven to flip downward from a horizontal position to a vertical position to support the upper part of the turnover box; The first grabbing plate (443) and the second grabbing plate (454) are respectively located on both sides of the turnover box and can act on the turnover box.

2. A turnover box feeding device according to claim 1, characterized in that: The lifting component comprises: A first guide wheel (251) and a second guide wheel (252) are respectively mounted on the upper end of the frame body (10) and located at both ends of the first supporting beam (30); The first chain (261) and the second chain (262) are respectively located at two ends of the first support beam (30); one end of the first chain (261) is connected to the first support beam (30), and the other end is wound around the outside of the first guide wheel (251) and then connected to the corresponding counterweight (291); one end of the second chain (262) is connected to the first support beam (30), and the other end is wound around the outside of the second guide wheel (252) and then connected to the corresponding counterweight (291); The first guide wheel (251) and the second guide wheel (252) are respectively connected to the driving motor (21) for synchronous rotation; Alternatively, the first guide wheel (251) is connected to the driving motor (21), and the second guide wheel (252) is connected to the first guide wheel (251) via a transmission chain (23) for synchronous rotation.

3. A turnover box feeding device according to claim 2, characterized in that: The lifting component also includes: A first double wheel (24), a second double wheel (27), and a third double wheel (28); The transmission chain (23) is wound around the outer sides of the teeth on the same side of the second double wheel (27) and the third double wheel (28), and a tensioning wheel (22) is provided on the transmission chain (23); The first double wheel (24) is connected to the other side teeth of the second double wheel (27) for power transmission; The first chain (261) is wound around the outer side of another tooth of the first double wheel (24), and the second chain (262) is wound around the outer side of another tooth of the third double wheel (28).

4. A turnover box feeding device according to claim 2, characterized in that: The frame body (10) has a plurality of vertically arranged pillars; The counterweight (291) is mounted on the support plate; The support plate is slidably located in the support column through a vertically arranged guide rod (292) and is connected to the first chain (261) or the second chain (262).

5. A turnover box loading device according to any one of claims 1 to 4, characterized in that: The first grabbing assembly (44) further comprises: A supporting slide plate (42) is driven and installed on the second supporting beam (41); The lifting motor (43) is fixed on the supporting slide plate (42), the output end of which is connected to the first support plate (441) and drives the first support plate (441) to move up and down relative to the supporting slide plate (42).

6. A turnover box feeding device according to claim 5, characterized in that: The second grabbing assembly (45) further comprises: A driving member (452) is fixedly mounted on the second supporting plate (451), and an output end thereof is connected to the supporting shaft (453); A support shaft (453) is rotatably mounted on the second support plate (451); One end of the second grabbing plate (454) is fixedly connected to the support shaft (453).

7. A turnover box loading device according to claim 6, characterized in that: One end of the second grabbing plate (454) close to the flipping axis is an L-shaped structure; When the second grabbing plate (454) is flipped downward to a vertical state, the upper portion of the second grabbing plate (454) contacts the second supporting plate (451) for position limiting.

8. The turnover box feeding device according to claim 6, characterized in that: The supporting slide plate (42) and the second support plate (451) are driven and moved on the second support beam (41) by electric cylinders respectively.

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