A turnover device and a turnover method for transportation

Abstract

The application discloses a kind of overturning device and overturning method for transportation, belong to overturning device technical field, wherein, overturning device for transportation includes horizontal conveying unit and longitudinal conveying unit, the position where horizontal conveying unit and longitudinal conveying unit intersect is arranged with lifting overturning mechanism, lifting overturning mechanism includes the base of sliding assembly on slide rail and support assembly assembled on base;Lifting unit drives support assembly to move downwards, the conveying roller can be rotated to the state of alignment with horizontal conveying unit, and then material box is conveyed to horizontal conveying unit, in addition, with the reset of support assembly, the conveying roller can be returned to the state of parallel with longitudinal conveying unit, so as to facilitate the next material box to be conveyed to support assembly, therefore, in the present scheme, material box can be in and out of support assembly along different directions, so as to increase the coherence of material box lifting and overturning.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of turnover devices, in particular to a turnover device for transportation and a turnover method. BACKGROUND

[0002] Chinese patent CN118120946A discloses a conveying and turnover device for tobacco cut tobacco proportioning and transportation. By controlling the lifting of the lifting guide rail and the turnover of the support, the lifting and rotation of the box body are completed by clamping the box body with the two fixed plates. When the box body is lifted to a certain height, the turnover of the box body is completed, so that the cut tobacco can be poured, thereby reducing the labor intensity of the operator.

[0003] The above device transports materials through rolling rods. In actual use, the materials enter and exit along the direction of the rolling rods, so that the materials cannot be continuously transported, and the continuity of material transportation and turnover is poor. Therefore, the above device still needs to be improved.

[0004] Therefore, it is necessary to provide a turnover device for transportation and a turnover method to solve the above technical problems. SUMMARY

[0005] The present application aims to provide a turnover device for transportation and a turnover method to solve the problem that the existing device transports materials through rolling rods, and in actual use, the materials enter and exit along the direction of the rolling rods, so that the goods cannot be continuously transported, and the continuity of material transportation and turnover is poor.

[0006] Based on the above idea, the present application provides the following technical scheme: a turnover device for transportation, comprising a horizontal conveying unit and a vertical conveying unit, a lifting and turnover mechanism is arranged at the intersection of the horizontal conveying unit and the vertical conveying unit, the lifting and turnover mechanism comprises a base slidingly assembled on a sliding rail and a support assembly assembled on the base, the support assembly comprises a sleeve plate rotatably assembled on the base, an inner frame plate is arranged in the sleeve plate, and conveying rollers are installed on the inner frame plate;

[0007] The inner frame plate can rotate relative to the sleeve plate. During the process of lowering the support assembly by the lifting unit, the inner frame plate can rotate by 90°, so that the conveying rollers on the inner frame plate can be parallel to the horizontal conveying unit, so as to guide the material box out of the direction of the horizontal conveying unit.

[0008] As a further scheme of the present application: a base plate is fixedly installed on the top of the sleeve plate, a baffle and a pressing plate are arranged on one side of the base plate, the baffle is fixedly connected with the base plate, the pressing plate can move transversely relative to the base plate to clamp the material box between the pressing plate and the baffle, and the pressing plate can deflect outward relative to the base plate.

[0009] As a further scheme of the present application, a sleeve is arranged at the lower center of the inner frame plate, the sleeve can rotate synchronously with the inner frame plate, an inclined upper sliding groove and a lower sliding groove are arranged on the outer circumferential surface of the sleeve, the upper sliding groove and the lower sliding groove are in communication and symmetrically distributed, a connecting plate is arranged at the lower position of the support assembly, an elastic connecting guide column which is in sliding fit with the upper sliding groove and the lower sliding groove is arranged at one end of the connecting plate close to the sleeve.

[0010] As a further scheme of the present application, a connecting shaft is arranged at the lower center of the inner frame plate, the connecting shaft is in transmission fit with the conveying roller, a sleeve is arranged at one side of the connecting plate, the sleeve is driven to rotate by an external driving motor, a strip-shaped groove is arranged at the inner wall of the sleeve, and a convex strip which is in fit with the strip-shaped groove is elastically connected to the outer circumferential surface of the connecting shaft.

[0011] As a further scheme of the present application, a sliding block is arranged on the substrate, the sliding block is in U-shaped structure, the pressing plate is hinged to the sliding block, and the hinged position is located at the outer side of the pressing plate, the horizontal section of the pressing plate is attached to the sliding block, and an arc spring is fixedly arranged between the sliding block and the outer side of the pressing plate.

[0012] As a further scheme of the present application, a limiting rod is elastically connected to the sliding block, a limiting hole which is in fit with the limiting rod is arranged on the horizontal section of the pressing plate, a positioning strip is fixedly arranged on the limiting rod, a pressing rod is fixedly installed on the substrate, the pressing rod is in zigzag shape, so that an inclined part is formed on the pressing rod, when the sliding block moves relative to the substrate towards the direction close to the baffle, the positioning strip moves to the inclined part, and the pressure of the inclined part on the positioning strip can make one end of the limiting rod inserted into the limiting hole.

[0013] As a further scheme of the present application, the transverse conveying unit and the longitudinal conveying unit are both power roller conveyors.

[0014] As a further scheme of the present application, a convex block is fixedly installed at the inner side of the base, the cover plate falls on the convex block, so as to maintain the horizontal state of the cover plate.

[0015] As a further scheme of the present application, the top end and the bottom end of the convex strip on the outer side of the connecting shaft are both inclined extrusion surfaces.

[0016] A flipping method using the above-mentioned transport flipping device includes the following steps: conveying a material box to a support assembly via a longitudinal conveying unit, driving the support assembly to move upward along a slide rail; after the support assembly moves into position, driving the support assembly to rotate so as to pour out the material in the material box; when the support assembly moves downward to the transverse conveying unit, the inner frame plate rotates 90° to guide the material box out from the direction of the transverse conveying unit; when the support assembly moves downward to the initial position, the inner frame plate can rotate 90° in the opposite direction to reset.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This device rotates the inner frame plate inside the sleeve plate, so that during the process of the lifting unit driving the support assembly to move downward, the conveying roller can rotate to a state that is aligned with the transverse conveying unit, thereby conveying the material box to the transverse conveying unit. In addition, as the support assembly resets, the conveying roller can return to a state that is parallel to the longitudinal conveying unit, which is beneficial for conveying the next material box to the support assembly. Therefore, in this solution, the material box can enter and exit the support assembly in different directions, thereby increasing the continuity of the lifting and flipping of the material box. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the inner frame plate and sleeve plate structure of the present invention;

[0021] Figure 3 This is a schematic diagram showing the position of the protrusion in this invention;

[0022] Figure 4 This is a schematic diagram of the upper sliding groove and the lower sliding groove of the present invention;

[0023] Figure 5 This is a schematic diagram of the baffle and pressure plate structure of the present invention;

[0024] Figure 6 This is a schematic diagram of the cooperation between the limiting rod and the pressure plate of the present invention;

[0025] Figure 7 This is the present invention. Figure 3 A magnified structural diagram at point A;

[0026] Figure 8 This is the present invention. Figure 5 A magnified structural diagram at point B;

[0027] Figure 9 This is the present invention. Figure 6 A magnified structural diagram at point C;

[0028] Figure 10 FIG. 1 is a schematic view of the protrusion structure of the present application.

[0029] In the figure: 1, longitudinal conveying unit; 2, transverse conveying unit; 3, sleeve plate; 301, rotating shaft; 4, inner frame plate; 401, conveying roller; 5, base plate; 501, baffle; 502, pressing plate; 5021, horizontal section; 503, boss; 6, base; 7, sliding rail; 8, sliding block; 9, screw rod; 10, sleeve; 1001, strip-shaped groove; 11, longitudinal support plate; 12, sleeve; 1201, upper sliding groove; 1202, lower sliding groove; 1203, straight groove; 13, connecting shaft; 14, transverse support plate; 15, limiting rod; 1501, positioning strip; 16, driven bevel gear; 17, inclined surface; 18, pressing rod; 1801, inclined part; 19, limiting ring; 20, connecting plate; 21, guide column; 22, protrusion; 2201, extrusion surface; 23, protruding block. DETAILED DESCRIPTION

[0030] As shown in Figures 1-10 , a turnover device for transportation includes a transverse conveying unit 2 and a longitudinal conveying unit 1, which are distributed perpendicular to each other, and the transverse conveying unit 2 is located above the longitudinal conveying unit 1, as shown in Figure 1 , a lifting turnover mechanism is arranged at the position where the transverse conveying unit 2 and the longitudinal conveying unit 1 intersect, as can be seen from Figure 1 , the lifting turnover mechanism includes a base 6 slidingly assembled on a sliding rail 7, which can move in the vertical direction along the sliding rail 7, and a support assembly is assembled on the base 6, in actual use, a material box is conveyed to the support assembly by the longitudinal conveying unit 1, and the base 6 can be moved upward by an external lifting unit, when the support assembly moves into position, the support assembly is driven to rotate outward by a motor arranged on the base 6, thereby pouring out the material in the material box, then, when the support assembly is moved downward to the transverse conveying unit 2 by the lifting unit, the material box on the support assembly can be guided out of the transverse conveying unit 2.

[0031] The support assembly includes a sleeve plate 3 rotatingly assembled on the base 6, and an inner frame plate 4 is arranged in the sleeve plate 3, both the inner frame plate 4 and the sleeve plate 3 are square structures, and the inner frame plate 4 is internally provided with a conveying roller 401, initially, the conveying roller 401 cooperates with the longitudinal conveying unit 1, so that when the material box on the longitudinal conveying unit 1 is conveyed to the support assembly, the material box can be further driven onto the support assembly by the conveying roller 401.

[0032] The inner frame plate 4 can rotate relative to the sleeve plate 3 to change the direction of the material box sent out from the support assembly, specifically, the inner frame plate 4 can rotate 90° during the process of the lifting unit driving the support assembly to descend, so that the conveying roller 401 at the inner frame plate 4 is parallel to the transverse conveying unit 2, and the material box can be guided out of the transverse conveying unit 2.

[0033] Of course, in order to clamp the material box on the support assembly, a base plate 5 is fixedly installed on the top of the sleeve plate 3, the base plate 5 is located on one side of the top of the sleeve plate 3 close to the base 6, and a baffle 501 and a pressing plate 502 are arranged on the side of the base plate 5 away from the base 6, and the material box transmitted to the support assembly is clamped between the baffle 501 and the pressing plate 502, specifically, the baffle 501 is fixedly connected with the base plate 5, and the pressing plate 502 can move transversely relative to the base plate 5, and the pressing plate 502 can be deflected outward relative to the base plate 5, so that the material box can be sent out from one side of the pressing plate 502 to the transverse conveying unit 2.

[0034] In combination Figures 2-10 As shown, in order to drive the inner frame plate 4 to rotate relative to the sleeve plate 3, a sleeve 12 is installed below the inner frame plate 4 at the central position, the sleeve 12 can rotate synchronously with the inner frame plate 4, and the sleeve 12 is fixedly connected with the inner frame plate 4. Figure 4 As shown, an inclined upper sliding groove 1201 and an inclined lower sliding groove 1202 are formed on the outer circumferential surface of the sleeve 12, the upper sliding groove 1201 and the lower sliding groove 1202 are mutually communicated and symmetrically distributed, and in actual use, the upper sliding groove 1201 and the lower sliding groove 1202 can be straight or arc-shaped, and a connecting plate 20 is arranged below the support assembly, the connecting plate 20 can be fixed on the ground, one end of the connecting plate 20 close to the sleeve 12 is elastically connected with a guide column 21, specifically, during the process of the lifting unit driving the support assembly to descend, the guide column 21 can move upward along the lower sliding groove 1202, so that the inner frame plate 4 can be driven to rotate 90° through the cooperation between the lower sliding groove 1202 and the guide column 21, so that the conveying roller 401 is parallel to the transverse conveying unit 2, thereby facilitating the transmission of the material box to the transverse conveying unit 2.

[0035] Further, a connecting shaft 13 is arranged below the inner frame plate 4 and at the center, the connecting shaft 13 is arranged through the sleeve 12 along the axial direction of the sleeve 12, and the connecting shaft 13 is in driving cooperation with the conveying roller 401, so that the connecting shaft 13 can drive the conveying roller 401 to rotate, thereby facilitating the conveying of the material box. The sleeve 10 is arranged at a position on one side of the connecting plate 20, the sleeve 10 is rotatably installed on the ground, and the sleeve 10 is in driving connection with the driving motor installed on the ground, so that the driving motor can drive the sleeve 10 to rotate. At least one strip-shaped groove 1001 is formed in the inner wall of the sleeve 10, and a convex strip 22 elastically connected with the strip-shaped groove 1001 is arranged on the outer circumferential surface of the connecting shaft 13. When the supporting assembly is lowered and the connecting shaft 13 is inserted into the sleeve 10, the convex strip 22 can be inserted into the strip-shaped groove 1001, so that the sleeve 10 can drive the connecting shaft 13 to rotate synchronously, thereby facilitating the rotation of the conveying roller 401.

[0036] Working principle: initially, the conveying roller 401 on the inner frame plate 4 is parallel to the longitudinal conveying unit 1. When the material box on the longitudinal conveying unit 1 is conveyed to the supporting assembly, the conveying roller 401 can further convey the material box, so that the material box completely enters the supporting assembly and is between the baffle 501 and the pressing plate 502. As the pressing plate 502 moves relative to the base plate 5, the material box can be pressed between the baffle 501 and the pressing plate 502. Then, the base 6 and the supporting assembly are driven upward by the lifting unit. When moved to the position, the inner frame plate 4 and the sleeve plate 3 are driven to rotate by the motor, so as to overturn the material box to pour out the material in the material box.

[0037] As the base 6 and the supporting assembly are driven downward by the lifting unit, when the supporting assembly moves to the transverse conveying unit 2, the guide column 21 can slide upward along the lower sliding groove 1202 to the junction of the lower sliding groove 1202 and the upper sliding groove 1201, so that the sleeve 12 and the inner frame plate 4 can rotate by 90°, so that the conveying roller 401 can rotate to a state parallel to the transverse conveying unit 2. Further, the connecting shaft 13 is inserted into the sleeve 10. At this time, the lifting unit is stopped and the sleeve 10 is driven to rotate. The sleeve 10 can drive the connecting shaft 13 to rotate synchronously through the cooperation of the convex strip 22 and the strip-shaped groove 1001, thereby driving the conveying roller 401 to rotate to convey the material box to the transverse conveying unit 2. Then, the lifting unit drives the supporting assembly to move downward again, so that the guide column 21 can slide upward along the upper sliding groove 1201. The inner frame plate 4 can be reversely rotated by 90° and reset to a state parallel to the longitudinal conveying unit 1, so that the material box on the longitudinal conveying unit 1 can enter the supporting assembly.

[0038] In summary, this device rotatably mounts the inner frame plate 4 within the sleeve plate 3, allowing the conveying roller 401 to rotate to a state aligned with the transverse conveying unit 2 as the lifting unit moves the support assembly downwards. This facilitates the transfer of the material box to the transverse conveying unit 2. Furthermore, as the support assembly resets, the conveying roller 401 returns to a state parallel to the longitudinal conveying unit 1, which is beneficial for transferring the next material box to the support assembly. Therefore, in this design, the material box can enter and exit the support assembly in different directions, thereby increasing the continuity of the material box lifting and flipping.

[0039] To ensure that the pressure plate 502 does not interfere with the material box's output, this design incorporates a slider 8 slidably mounted on the base plate 5. Figure 2 , Figures 5-9 As shown, the slider 8 has an overall U-shaped structure, and the slider 8 slides in conjunction with the substrate 5 through a guide groove on the substrate 5. Figure 9 As shown, the pressure plate 502 is generally L-shaped, and the pressure plate 502 is hinged to the slider 8 via a hinge or hinge. The hinge position is located on the outer side of the pressure plate 502. The horizontal section 5021 of the pressure plate 502 is in contact with the slider 8, so that the pressure plate 502 can only deflect outwards relative to the slider 8. (Refer to...) Figure 5 As shown, an arc-shaped spring is fixedly provided between the slider 8 and the outer side of the pressure plate 502, so that the pressure plate 502 can be parallel to the baffle 501 in the initial state.

[0040] Furthermore, a limiting rod 15 is elastically connected to the slider 8, and the limiting rod 15 can slide relative to the slider 8. A limiting hole that mates with the limiting rod 15 is provided on the horizontal section 5021 of the pressure plate 502. (Refer to...) Figure 6 , Figure 9 As shown, a positioning strip 1501 is fixedly provided on the limiting rod 15, and the positioning strip 1501 passes through the preset slot on the slider 8. A pressure rod 18 is fixedly installed on the base plate 5. The pressure rod 18 is generally zigzag-shaped, so that an inclined portion 1801 is formed on the pressure rod 18. When the slider 8 moves relative to the base plate 5 towards the baffle 501, causing the positioning strip 1501 to move to the inclined portion 1801, the pressure of the inclined portion 1801 on the positioning strip 1501 can cause one end of the limiting rod 15 to be inserted into the limiting hole, thereby locking the pressure plate 502 and the slider 8.

[0041] Reference Figure 2 As shown, a lead screw 9 is provided on one side of the substrate 5. The lead screw 9 passes through the slider 8 and is threadedly connected to it, thereby enabling the slider 8 to move.

[0042] Specifically, when the material box is conveyed by the longitudinal conveying unit 1 to the support assembly, the driving lead screw 9 rotates to drive the sliding block 8 to move towards the direction close to the baffle 501, and the sliding block 8 can synchronously drive the pressing plate 502 to move. During the process that the positioning strip 1501 passes through the inclined part 1801, the pressure of the inclined part 1801 on the positioning strip 1501 can extrude the limiting rod 15 to make one end of the limiting rod 15 inserted into the limiting hole of the pressing plate 502, so as to lock the pressing plate 502 and the sliding block 8. Subsequently, when the sliding block 8 and the pressing plate 502 are moved by the lead screw 9, the pressing plate 502 can be stably pressed on the outside of the material box, so as to press the material box between the baffle 501 and the pressing plate 502.

[0043] The core content of the present scheme is described above, and the auxiliary structure in the present scheme is described below:

[0044] The base 6 is provided with rollers in sliding cooperation with the sliding rails 7, the rollers are arranged on both sides of the sliding rails 7, the lifting unit is a winch, and a steel wire rope on the winch extends downward along the sliding rails 7 and is fixedly connected with the base 6, so as to drive the base 6 and the support assembly connected with the base 6 to move.

[0045] The transverse conveying unit 2 and the longitudinal conveying unit 1 are both power roller conveyors. Specifically, the power roller conveyor is driven to rotate by a motor, a chain, a belt or other driving devices, so as to realize automatic and continuous conveying. Since it is a mature technical means, the power roller conveyor will not be described here. The inner frame plate 4 and the conveying rollers 401 in the present scheme can also be regarded as a roller conveyor. Specifically, the conveying rollers 401 are rotationally connected with the inner frame plate 4 through the circular shafts at the ends thereof, and a belt or a chain is arranged on the circular shafts of the adjacent two conveying rollers 401, so that the plurality of conveying rollers 401 can rotate synchronously. Figure 1 、 Figures 5-8 、 Figure 10 As shown in the figure, a ring groove is formed in the outer circumferential surface of the middle conveying roller 401, and the ring groove is located at the middle position of the conveying roller 401. A driven bevel gear 16 is fixedly arranged on the conveying roller 401 at the ring groove, and the top end of the connecting shaft 13 is fixedly provided with a driving bevel gear which is engaged with the driven bevel gear 16, so as to drive the conveying roller 401 to rotate.

[0046] The sleeve plate 3 is fixedly provided with a rotating shaft 301, the rotating shaft 301 penetrates through the base 6 and is rotationally connected with the base 6, and a motor mounted on the base 6 is in transmission cooperation with the rotating shaft 301 through a gear set, so as to drive the support assembly to rotate.

[0047] The connecting blocks are rotationally arranged at the both ends of the lead screw 9, and the connecting blocks are fixedly connected with the base plate 5. The first motor is arranged on the base plate 5, and the output end of the first motor is in transmission connection with the end of the lead screw 9, so as to drive the lead screw 9 to rotate.

[0048] Referring to Figures 2-3 As shown in the drawings, the protrusion 23 is fixedly installed at the inner side of the base 6, and the cover plate 3 falls on the protrusion 23 initially to maintain the horizontal state of the cover plate 3. The bottom of the cover plate 3 is fixedly provided with a longitudinal support plate 11, and the sleeve 12 is rotatably connected to the longitudinal support plate 11. Figure 3 、 Figure 7 As shown in the drawings, the sleeve 12 penetrates through the longitudinal support plate 11 and is rotatably connected to the longitudinal support plate 11. Figure 7 As can be seen from the drawings, the limiting ring 19 is arranged at the top and the bottom of the longitudinal support plate 11, and the limiting ring 19 is fixedly sleeved on the outer side of the sleeve 12, so that the sleeve 12 is stably connected to the longitudinal support plate 11.

[0049] Referring to Figure 4 As shown in the drawings, the horizontal support plate 14 is fixedly installed at the bottom of the inner frame plate 4, and the sleeve 12 is fixedly installed at the bottom of the horizontal support plate 14. The connecting shaft 13 penetrates through the horizontal support plate 14 and is rotatably connected to the horizontal support plate 14 by a bearing. Figure 5 As shown in the drawings, the boss 503 is fixedly arranged at the inner side of the base plate 5, and the thickness of the boss 503 is greater than the width of the horizontal section 5021. When the material box is placed on the support assembly, the material box is in contact with the boss 503. Through this structure, the material box will not interfere with the horizontal section 5021 on the pressing plate 502 during the process of being guided out of the support assembly.

[0050] Referring to Figure 6 As shown in the drawings, the first spring is fixedly arranged between the notch side wall and the positioning strip 1501 to achieve the elastic connection between the limiting rod 15 and the sliding block 8. When the positioning strip 1501 moves away from the baffle 501 and is misaligned with the inclined part 1801, the limiting rod 15 can be popped out and separated from the limiting hole.

[0051] Referring to Figure 7 As shown in the drawings, the second spring is fixedly arranged between the guide column 21 and the end face of the circular hole of the connecting plate 20 to achieve the elastic connection between the guide column 21 and the connecting plate 20. Figure 4 、 Figure 8 As shown in the drawings, the straight groove 1203 is arranged at the top end of the upper sliding groove 1201 and the bottom end of the lower sliding groove 1202. The straight groove 1203 is parallel to the axis of the sleeve 12 and is in communication with the lower sliding groove 1202. The straight groove 1203 extending downward to the bottom end face of the sleeve 12, so that the guide column 21 can enter the lower sliding groove 1202 through the straight groove 1203 during the process of the support assembly moving downward. Of course, the diameter of the guide column 21 is smaller than the width of the straight groove 1203. Figure 8As can be seen, the bottom end of the straight groove 1203 connected with the upper chute 1201 is provided with an inclined surface 17. Through this structure, when the material box is conveyed to the support assembly by the longitudinal conveying unit 1 and the support assembly moves upward, the guide column 21 can move downward along the straight groove 1203 and finally transition to the outer circumferential surface of the sleeve 12 through the inclined surface 17, thereby avoiding the rotation of the inner frame plate 4 during the process of lifting the support assembly upward. In actual use, the friction between the limiting ring 19 and the longitudinal support plate 11 can ensure that the inner frame plate 4 remains stable without external force.

[0052] With reference to Figure 10 As shown, the top end and the bottom end of the convex strip 22 located outside the connecting shaft 13 are both inclined extrusion surfaces 2201. In the process of the convex strip 22 entering the sleeve 10, the extrusion surface 2201 can be in contact with the inner wall of the sleeve 10, so that the convex strip 22 can be compressed. When the convex strip 22 completely enters the sleeve 10 and is aligned with the strip-shaped groove 1001, the convex strip 22 can be ejected.

[0053] The above disclosure is only a preferred example of the present application, which is to facilitate the understanding and implementation of those skilled in the art, but it cannot limit the scope of the present application. Therefore, equivalent changes made in accordance with the scope described in the present application still fall within the scope of the present application.

Claims

1. A turnover device for transportation, comprising a transverse conveying unit and a longitudinal conveying unit, the transverse conveying unit being located at an upper position of the longitudinal conveying unit, a lifting turnover mechanism being arranged at a position where the transverse conveying unit and the longitudinal conveying unit intersect, the lifting turnover mechanism comprising a base slidingly fitted on a slide rail and a support assembly fitted on the base, characterized in that: The support assembly comprises a sleeve plate rotatably assembled on the base, an inner frame plate is arranged in the sleeve plate, and conveying rollers are mounted on the inner frame plate; The inner frame plate is rotatable relative to the sleeve plate, and the inner frame plate can be rotated by 90° in the process that the lifting unit drives the support assembly to descend, so that the conveying rollers on the inner frame plate can be parallel to the transverse conveying unit, thereby facilitating the guiding of the material box out of the direction of the transverse conveying unit; A base plate is fixedly mounted on the top of the sleeve plate, a baffle and a pressing plate are arranged on one side of the base plate, and the pressing plate can be deflected outward relative to the base plate; A sleeve is mounted at a central position below the inner frame plate, the sleeve can rotate synchronously with the inner frame plate, an inclined upper sliding groove and a lower sliding groove are formed on the outer circumferential surface of the sleeve, the upper sliding groove and the lower sliding groove are mutually communicated and symmetrically distributed, a connecting plate is arranged at a lower position of the support assembly, an end of the connecting plate close to the sleeve is elastically connected with a guide column which is in sliding fit with the upper sliding groove and the lower sliding groove, straight grooves are formed at the top end of the upper sliding groove and the bottom end of the lower sliding groove of the outer wall of the sleeve, the straight groove which is in communication with the lower sliding groove extends downward to the bottom end surface of the sleeve, and the bottom end of the straight groove which is in communication with the upper sliding groove is provided as an inclined surface; A sliding block is slidingly assembled on the base plate, the pressing plate is hinged to the sliding block, the horizontal section of the pressing plate is attached to the sliding block, and an arc-shaped spring is fixedly arranged between the sliding block and the outer side surface of the pressing plate; A limiting rod is elastically connected to the sliding block, limiting holes which are matched with the limiting rod are formed in the horizontal section of the pressing plate, a positioning strip is fixedly arranged on the limiting rod, a pressing rod is fixedly mounted on the base plate, the pressing rod is in the shape of a broken line, so that an inclined portion is formed on the pressing rod, when the sliding block moves relative to the base plate in the direction close to the baffle so that the positioning strip moves to the inclined portion, the pressure of the inclined portion on the positioning strip can make one end of the limiting rod inserted into the limiting hole.

2. The turnover device for transportation according to claim 1, characterized in that: The baffle is fixedly connected to the base plate, and the pressing plate can move transversely relative to the base plate to clamp the material box between the pressing plate and the baffle.

3. A turnover device for transporting as claimed in claim 2, characterized in that: A connecting shaft is arranged at a central position below the inner frame plate, the connecting shaft is in driving fit with the conveying rollers, a sleeve is arranged on one side of the connecting plate, the sleeve is driven to rotate by an external driving motor, a strip-shaped groove is formed in the inner wall of the sleeve, and a convex strip which is matched with the strip-shaped groove is elastically connected to the outer circumferential surface of the connecting shaft.

4. The turnover device for transportation according to claim 2, characterized in that: The sliding block is in the shape of U, and the hinged position of the sliding block and the pressing plate is located at the outer side surface of the pressing plate.

5. The turnover device for transportation according to claim 1, characterized in that: Both the transverse conveying unit and the longitudinal conveying unit are power roller conveyors.

6. The turnover device for transportation according to claim 1, characterized in that: A protrusion is fixedly mounted on the inner side surface of the base, and the sleeve plate falls on the protrusion, so as to maintain the horizontal state of the sleeve plate.

7. The turnover device for transporting according to claim 3, characterized in that: The top end and the bottom end of the convex strip on the outer side portion of the connecting shaft are both inclined extrusion surfaces.

8. A method of turning using the turning device for transport according to any one of claims 1-7, characterized in that, It comprises the following steps: conveying the material box to the support assembly by the longitudinal conveying unit, driving the support assembly to move upward along the slide rail, driving the support assembly to rotate when the support assembly moves to the position so as to pour out the material in the material box; when the support assembly moves downward to the position of the transverse conveying unit, the inner frame plate rotates by 90° to guide the material box out of the direction of the transverse conveying unit; when the support assembly moves downward to the initial position, the inner frame plate can rotate reversely by 90° to reset.

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