Self-limiting tray for logistics

Abstract

The utility model discloses a self-limiting tray for logistics, belongs to the field of logistics trays, is used for logistics, and comprises side supporting plates, middle supporting plates, side top plates and middle top plates, and gaps are reserved between the adjacent middle top plates; the side supporting plate is connected with the auxiliary plate, a cavity for containing the limiting plate is formed in the side supporting plate, a cavity for containing the rod body pressing block is formed in the auxiliary plate, and the two cavities are communicated through a plate body notch; the rod body pressing block and the limiting plate are each provided with a tooth-shaped part connected with the linkage tooth belt. A pressing rod is arranged at the top of the rod body pressing block and extends out of the top end of the side top plate, and limiting plate outlets are formed in the positions, corresponding to the limiting plate, of the side supporting plate and the side top plate. A reset spring is arranged at the bottom of the rod body pressing block. Limiting between the logistics box and the tray in the transportation process can be achieved, horizontal dislocation caused by jolting between the logistics box and the tray is avoided, the stability and reliability of the logistics box in the transportation process are improved, and the weight and complexity of the tray are reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of logistics pallets, and in particular, relates to a self-limiting pallet for logistics. BACKGROUND

[0002] In the logistics conveying process, the pallet can facilitate the transfer and transfer of the logistics box, improving the flexibility and mobility of the logistics box.

[0003] Referring to the patent document with the Chinese patent publication number CN116692199A, a logistics pallet is disclosed, and the following technical solution is specifically disclosed: a pallet body, a plurality of pallet feet uniformly distributed and fixedly connected to the lower surface of the pallet body, a plurality of reinforcing plates uniformly distributed and fixedly installed at the bottom end of the pallet feet, and a concave-convex surface formed on the upper surface of the pallet body; when the forks of the forklift advance to the inside of the connecting groove, the forks move the push plate forward, the push plate moves the drive gear plate horizontally through the L-shaped connecting rod, the drive gear plate drives the transmission gear to rotate, the transmission gear drives the first double-headed screw to rotate, the first double-headed screw drives the two first sliding blocks to slide towards each other, the two first sliding blocks move the two L-shaped clamping plates and the two L-shaped non-slip pads synchronously, and the two L-shaped clamping plates limit the forks through the two L-shaped non-slip pads, thereby effectively improving the tightness of the forks and the pallet body after being inserted, and further effectively improving the stability of the pallet body after being lifted by the forks.

[0004] In the above technical solution, although a limiting device is also used, the limiting device is an improvement on the cooperation form of the forks and the pallet, rather than the fixing of the logistics box and the pallet during the conveying process, and the external structure of the pallet in the prior art has high complexity, which can easily increase the weight and failure rate of the logistics pallet. SUMMARY

[0005] The present application aims to provide a self-limiting pallet for logistics, which can limit the logistics box and the pallet during the conveying process, avoid horizontal misalignment between the logistics box and the pallet due to bumps, improve the stability and reliability of the logistics box during the conveying process, and reduce the weight and complexity of the pallet itself.

[0006] To achieve the above-mentioned purpose, the present application is realized by the following technical solution:

[0007] The logistics self-limiting tray described in the application comprises two parallel side support plates, a middle support plate is arranged between adjacent side support plates, the top of the side support plate and the middle support plate is fixedly connected with a side top plate and a middle top plate, the side top plate is located at the end of the side support plate and the middle support plate, the middle top plate is located between adjacent side top plates, and a gap is left between adjacent middle top plates; the inner side of the side support plate is provided with an auxiliary plate, a cavity accommodating a limiting plate is arranged in the inner side of the side support plate, a cavity accommodating a rod body pressing block is arranged in the inner side of the auxiliary plate, and the cavity in the side support plate is communicated with the cavity in the auxiliary plate through a plate body gap; the rod body pressing block and the limiting plate are both provided with a tooth-shaped part connected with a linkage tooth belt, the linkage tooth belt is connected with two linkage rotating wheels, and the linkage rotating wheel is rotatably connected to the auxiliary plate through a rotating wheel shaft body; the top of the rod body pressing block is provided with a pressing rod, the pressing rod extends from the top end of the side top plate, and the limiting plate is provided with a limiting plate outlet at the position of the corresponding side support plate and side top plate; the bottom of the rod body pressing block is provided with a reset spring.

[0008] As one of the preferred technical solutions of the application, the pressing rod is provided with a plate body shaft sleeve at the bottom surface of the side top plate, and the pressing rod relatively slides in the plate body shaft sleeve; the bottom of the rod body pressing block is provided with a pressing block shaft body, the pressing block shaft body is inserted into the shaft body base and moves relative to the shaft body base; the shaft body base is located at the bottom surface of the cavity of the auxiliary plate, and a reset spring is arranged between the bottom surface of the pressing block shaft body and the bottom surface of the shaft body base.

[0009] As one of the preferred technical solutions of the application, the rotating wheel shaft bodies are vertically arranged in pairs in the cavity of the auxiliary plate, the rotating wheel shaft bodies are respectively rotatably connected with linkage rotating wheels, adjacent linkage rotating wheels are connected through a linkage tooth belt, the linkage tooth belt is respectively machined with a belt body tooth-shaped part on the side surface facing the rod body pressing block and the limiting plate, the rod body pressing block is respectively machined with a block body tooth-shaped part on the side surface facing the linkage tooth belt, the block body tooth-shaped part is located on the side surface of the limiting plate facing the linkage tooth belt and is fixedly connected with the limiting plate.

[0010] As one of the preferred technical solutions of the application, the side top plate and the middle support plate are machined with an auxiliary groove at the middle position, and the side top plate and the middle support plate are also symmetrically machined with a support groove at the positions on both sides of the auxiliary groove.

[0011] As one of the preferred technical solutions of the application, the auxiliary groove is placed with a support plate base inside when in use, the support plate base is connected with an auxiliary support plate, the auxiliary support plate extends out after passing through the gap between adjacent middle top plates, and the top end surface of the auxiliary support plate is equal to or higher than the top end surface of the pressing rod.

[0012] As one of the preferred technical solutions of the application, an edge corner supporting block is further arranged in the gap between adjacent middle top plates, the edge corner supporting block is distributed at the edge corner position of the tray, and the bottom surface of the edge corner supporting block is flush with the bottom surface of the support plate base.

[0013] As one of the preferred technical solutions of the present application, the limiting plate outlet is inserted into the rubber plug end cover when not in use.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] The present application realizes the linkage of the pressing rod and the limiting plate by setting the structure form of the side support plate cooperating with the auxiliary plate at the corner position of the tray and improving the internal structure, thereby realizing the cooperation of the tray and the bottom limiting groove of the logistics box, avoiding the horizontal misplacement of the logistics box and the tray during transportation, and ensuring the stability and reliability of the logistics box during transportation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of the present application Figure 1 .

[0017] Figure 2 is a perspective view of the present application Figure 2 .

[0018] Figure 3 is a perspective view of the present application used in cooperation with the auxiliary supporting plate, the supporting plate base, and the corner supporting block Figure 1 .

[0019] Figure 4 is a perspective view of the present application used in cooperation with the auxiliary supporting plate, the supporting plate base, and the corner supporting block Figure 2 .

[0020] Figure 5 is a plan view of the present application.

[0021] Figure 6 is Figure 5 a sectional view of the position and direction shown in A-A in

[0022] Figure 7 is Figure 6 a partial enlarged view of part I in

[0023] Figure 8 is a perspective view used in cooperation with the logistics box.

[0024] In the figure: 1, side top plate; 2, middle top plate; 3, side support plate; 4, auxiliary plate; 5, limiting plate outlet; 6, limiting plate; 7, pressing rod; 8, supporting groove; 9, auxiliary groove; 10, middle support plate; 11, auxiliary supporting plate; 12, supporting plate base; 13, logistics box; 14, bottom limiting groove; 15, plate body shaft sleeve; 16, rod body pressing block; 17, pressing block shaft body; 18, shaft body base; 19, plate body notch; 20, linkage block; 21, linkage tooth belt; 22, linkage rotating wheel; 23, rotating wheel shaft body; 24, belt body tooth-shaped part; 25, block body tooth-shaped part; 26, corner supporting block. DETAILED DESCRIPTION

[0025] The technical solutions described in the application will be further described and illustrated in the following with reference to the drawings and embodiments.

[0026] Embodiment 1

[0027] Referring to Figures 1 to 8 The self-limiting pallet for logistics comprises side support plates 3, which are distributed at both ends of the side top plate 1 and the middle top plate 2 and are fixedly connected with the side top plate 1 and the middle top plate 2. The bottom surface of the side top plate 1 and the middle top plate 2 at the middle position is further fixedly connected with a middle support plate 10, and the middle support plate 10 and the side support plate 3 are arranged in parallel.

[0028] The side support plate 3 is further fixedly connected with an auxiliary plate 4 on the side surface facing the middle support plate 10, and the auxiliary plate 4 is located at the end of the side support plate 3 and can support the side support plate 3 and part of the middle top plate 2.

[0029] The side support plate 3 and the auxiliary plate 4 have hollow cavities inside, and the hollow cavities of the side support plate 3 and the auxiliary plate 4 are communicated through a plate body gap 19. The auxiliary plate 4 is provided with a linkage tooth belt 21 inside the hollow cavity and close to the plate body gap 19, the linkage tooth belt 21 is connected through a linkage rotating wheel 22 and rotates under the driving of the linkage rotating wheel 22, the linkage rotating wheel 22 is connected with a rotating wheel shaft body 23, and the rotating wheel shaft body 23 is two and is distributed in the height direction of the auxiliary plate 4.

[0030] The linkage tooth belt 21 is driven through the tooth-shaped parts 24 of the belt bodies on both sides and the block tooth-shaped parts 25, the block tooth-shaped parts 25 are respectively located on the rod body pressing block 16 and the limiting plate 6 at the corresponding positions, the top end of the rod body pressing block 16 is provided with a pressing rod 7, the pressing rod 7 extends out from the top of the auxiliary plate 4 and the side top plate 1, and a return spring is arranged between the bottom of the rod body pressing block 16 and the bottom surface of the auxiliary plate 4.

[0031] The side support plate 3 and the side top plate 1 at the top position of the limiting plate 6 are machined with a limiting plate outlet 5 with the same cross-sectional shape, and the limiting plate 6 moves upward under the action of the linkage tooth belt 21.

[0032] Embodiment 2

[0033] Referring to Figures 1 to 8, the logistics self-limiting tray further comprises a pressing block shaft body 17 located at the bottom of the rod body pressing block 16, and the pressing block shaft body 17 can be two and symmetrically arranged on the rod body pressing block 16. The pressing block shaft body 17 is inserted into the inside of the shaft body base 18, and there is enough movement gap between the top surface of the shaft body base 18 and the bottom of the rod body pressing block 16; and the bottom surface of the pressing block shaft body 17 is pressed by the reset spring and the bottom surface of the shaft body base 18. The pressing rod 7 is provided with a plate body shaft sleeve 15 at the position penetrating through the side top plate 1, the plate body shaft sleeve 15 is located at the bottom surface of the side top plate 1, and the pressing rod 7 moves relative to the plate body shaft sleeve 15 after penetrating through the plate body shaft sleeve 15.

[0034] The structures and connection relationships of the remaining parts are the same as those described in the foregoing embodiments, and those skilled in the art can understand the technical solutions described in this embodiment on the basis of referring to the foregoing embodiments.

[0035] Embodiment 3

[0036] Referring to Figures 1 to 8 , the logistics self-limiting tray, the limiting plate 6 is fixedly connected with a linkage block 20 on the side surface facing the linkage tooth belt 21, and the linkage block 20 is provided with a block tooth profile 25 matched with the belt tooth profile 24. In addition to the side surface and the top surface provided with the linkage block 20, the remaining side surfaces of the limiting plate 6 are in contact with the inner wall of the side support plate 3.

[0037] The structures and connection relationships of the remaining parts are the same as those described in the foregoing embodiments, and those skilled in the art can understand the technical solutions described in this embodiment on the basis of referring to the foregoing embodiments.

[0038] Embodiment 4

[0039] Referring to Figures 1 to 8 , the logistics self-limiting tray, the side top plate 1 and the middle support plate 10 are both machined with an auxiliary groove 9 at the middle position, and the side top plate 1 and the middle support plate 10 are symmetrically machined with a support groove 8 on both sides of the auxiliary groove 9. The auxiliary groove 9 is matched with the support plate base 12 in use, that is, the support plate base 12 is placed in the inside of the auxiliary groove 9 and is limited by the auxiliary groove 9. The support plate base 12 is connected with an auxiliary support plate 11, the auxiliary support plate 11 extends out of the gap between the adjacent middle top plates 2, and the top end surface of the auxiliary support plate 11 is flush with the top end surface of the pressing rod 7, or the top end surface of the auxiliary support plate 11 is higher than the top end surface of the pressing rod 7.

[0040] The tray is further provided with a corner supporting block 26 at the corner position, the bottom surface of the corner supporting block 26 is flush with the bottom surface of the support plate base 12, and the top end surface of the corner supporting block 26 is flush with the top end surface of the auxiliary support plate 11.

[0041] The base 12 has a clamping groove that is clamped with the auxiliary groove 9.

[0042] The rest of the structure and connection relationship is the same as the structure and connection relationship described in the foregoing embodiments, and those skilled in the art can understand the technical solutions described in the embodiment on the basis of referring to the foregoing embodiments.

[0043] On the basis of the foregoing embodiments, the following paragraphs continue to describe the technical features involved therein and the functions and effects of the technical features in the technical solutions in detail, to help those skilled in the art fully understand the technical solutions and reproduce them.

[0044] In the present application, the top surface of the tray includes side top plates 1 and middle top plates 2, the middle top plates 2 are several, the side top plates 1 are two, the middle top plates 2 are arranged in parallel with the side top plates 1, and gaps are arranged between adjacent middle top plates 2 for the extension of auxiliary tray plates 11 and corner supporting blocks 26.

[0045] The side top plates 1 and the middle top plates 2 are fixedly connected with corresponding side supporting plates 3 and middle supporting plates 10, the side supporting plates 3 are located at both ends of the side top plates 1 and the middle top plates 2, the middle supporting plates 10 are located at the middle positions of the side top plates 1 and the middle top plates 2, and adjacent side supporting plates 3, side supporting plates 3 and middle supporting plates 10 are arranged in parallel.

[0046] In the present application, the side supporting plates 3 and the middle supporting plates 10 are both machined with auxiliary grooves 9 at the middle positions, which are matched with the tray plate bases 12 in use, to improve the connection stability of the auxiliary grooves 9 and the tray plate bases 12, and the accuracy of the limiting of the auxiliary grooves 9 and the tray plate bases 12, a clamping groove can be arranged at the clamping position of the tray plate base 12 and the auxiliary groove 9, and the auxiliary groove 9 can be inserted into the clamping groove of the tray plate base 12.

[0047] In the present application, the side supporting plates 3 and the middle supporting plates 10 are also machined with tray grooves 8 at the positions on both sides of the auxiliary grooves 9, the tray grooves 8 can be matched with the forklifts to realize the overall movement of the tray.

[0048] In the present application, the thickness of the side supporting plates 3 is relatively large, and the middle supporting plates 10 are double-layer plate bodies, to ensure the strength of the overall structure of the tray.

[0049] In the present application, the side supporting plates 3 are fixedly connected with auxiliary plates 4 at the positions of the side faces of the middle supporting plates 10, and the auxiliary plates 4 are located at the positions of the side faces of the side supporting plates 3 close to the end portions. The top surface of the auxiliary plate 4 can be connected with the side top plates 1 and the middle top plates 2 at the corresponding positions.

[0050] In the application, the side support plate 3 and the auxiliary plate 4 are processed with cavities at the positions corresponding to the end connected with the side top plate 1, the inside of the side support plate 3 is provided with a limiting plate 6, the inside of the auxiliary plate 4 is provided with a rod body pressing block 16, and a transmission linkage tooth belt 21 is arranged between the rod body pressing block 16 and the limiting plate 6. The cavities of the side support plate 3 and the cavities of the auxiliary plate 4 are communicated through a plate body gap 19, the auxiliary plate 4 is provided with a rotating wheel shaft body 23 at the position close to the plate body gap 19, the rotating wheel shaft body 23 is two and vertically distributed on the auxiliary plate 4. A linkage rotating wheel 22 is rotatably connected on the rotating wheel shaft body 23, and a bearing structure can be arranged between the rotating wheel shaft body 23 and the linkage rotating wheel 22 to ensure the stable rotation of the two. Two adjacent linkage rotating wheels 22 are connected through the linkage tooth belt 21.

[0051] The linkage tooth belt 21 is provided with a plurality of belt body tooth-shaped parts 24 on the side surface facing the rod body pressing block 16 and the limiting plate 6, the linkage tooth belt 21 is a rubber belt body with a steel wire mesh, the block body tooth-shaped part 25 is a rubber protrusion with a metal lining, and the cross section of the rubber protrusion is a right-angled trapezoid, the horizontal plane of the right-angled trapezoid faces upward, and the inclined plane faces downward.

[0052] The rod body pressing block 16 is processed with a plurality of block body tooth-shaped parts 25 on the side surface facing the linkage tooth belt 21, the cross section shape of the block body tooth-shaped part 25 is also a right-angled trapezoid, the horizontal plane of the block body tooth-shaped part 25 cooperates with the horizontal plane of the belt body tooth-shaped part 24, and the inclined plane of the block body tooth-shaped part 25 faces upward.

[0053] In the application, the limiting plate 6 is provided with the block body tooth-shaped part 25 through the rod body pressing block 16 fixedly connected therewith.

[0054] In the application, the rod body pressing block 16 is provided with a pressing rod 7 at the top, the pressing rod 7 is two and symmetrically arranged on the rod body pressing block 16. The pressing rod 7 penetrates through the auxiliary plate 4 and the side top plate 1 and then extends out from the top surface of the side top plate 1. The pressing rod 7 is provided with a plate body shaft sleeve 15 at the position penetrating through the bottom surface of the side top plate 1, the plate body shaft sleeve 15 is located on the bottom surface of the side top plate 1 and connected with the side top plate 1. The pressing rod 7 can move relative to the plate body shaft sleeve 15 after penetrating through the plate body shaft sleeve 15.

[0055] In the application, the rod body pressing block 16 is provided with a pressing block shaft body 17 corresponding to the pressing rod 7 at the bottom, the bottom of the pressing block shaft body 17 is provided with a shaft body base 18, the pressing block shaft body 17 moves relative to the shaft body base 18, and a reset spring is arranged between the bottom of the pressing block shaft body 17 and the bottom of the shaft body base 18, and the reset spring is located in the shaft body base 18. The shaft body base 18 is a sleeve structure with the top end open and the bottom end blocked.

[0056] The sufficient movement distance is left between the top surface of the shaft base 18 and the bottom surface of the rod block 16 to satisfy the safety clearance between the bottom surface of the rod block 16 and the top surface of the shaft base 18 when the top surface of the rod 7 is flush with the top surface of the side top plate 1 after being pressed, so as to avoid collision.

[0057] In the application, the linkage block 20 is fixedly installed on the side of the limiting plate 6, and since the limiting plate 6 is provided with the side and the top except the side where the linkage block 20 is installed, the remaining sides of the limiting plate 6 can be in contact with the inner wall of the side support plate 3 in the initial state, and when the limiting plate 6 moves upward, the bottom surface of the limiting plate 6 is separated from the bottom surface of the side support plate 3, and the remaining sides of the limiting plate 6 in contact with the inner wall of the side support plate 3 are still in sliding contact with the inner wall of the side support plate 3. Of course, in the application, the limiting plate 6 can be provided with a T-shaped sliding groove, and the side support plate 3 is provided with a T-shaped sliding rail on the corresponding side, and the two can realize more stable guiding and limiting of the limiting plate 6.

[0058] In the application, the logistics box 13 is provided with a recess-shaped bottom limiting groove 14 at the bottom, the bottom limiting groove 14 can allow the limiting plate 6 extending out of the limiting plate outlet 5 to be inserted after being aligned, two limiting plates 6 can be respectively inserted into the end of the bottom limiting groove 14, and the width of the bottom limiting groove 14 is slightly larger than the width of the limiting plate 6, so as to ensure the stable insertion of the limiting plate 6 into the bottom limiting groove 14 in the case that the logistics box 13 and the tray are shaken too much.

[0059] In the application, initially, the tray is placed on a horizontal surface, that is, the bottom end surface of the side support plate 3 and the auxiliary plate 4 is in contact with the horizontal surface. The bottom surface of the tray base 12 is in contact with the horizontal surface, the auxiliary tray 11 connected on the tray base 12 can be stretched out from the gap between the adjacent middle top plates 2, and the top surface of the auxiliary tray 11 is equal to or higher than the top surface of the pressing rod 7, the top surface of the corner supporting block 26 matched with the auxiliary tray 11 is flush with the auxiliary tray 11, and the auxiliary tray 11 and the corner supporting block 26 can temporarily support the logistics box 13. When the tray is lifted and transferred by the forklift through the tray groove 8, in the process of upward movement of the tray, the pressing rod 7 gradually comes into contact with the bottom surface of the logistics box 13 and is subjected to pressure from the logistics box 13, the pressing rod 7 moves downward, and the rod body pressing block 16 and the pressing block shaft body 17 are driven to move downward, the pressing block shaft body 17 moves into the shaft body base 18 and compresses the return spring. In the process of downward movement of the rod body pressing block 16, the rod body pressing block 16 is provided with a block body tooth-shaped part 25, which drives the belt body tooth-shaped part 24 on the side to move downward, and in the process of downward movement of the belt body tooth-shaped part 24, the linkage toothed belt 21 is driven to rotate downward around the linkage rotating wheel 22, and the linkage toothed belt 21 on the other side drives the belt body tooth-shaped part 24 on the side to move upward, and the belt body tooth-shaped part 24 on the side is driven to move upward by the block body tooth-shaped part 25 on the side, and the rod body pressing block 16 drives the limiting plate 6 to move upward and extends through the limiting plate outlet 5 above, and the limiting plate 6 extending out of the limiting plate outlet 5 enters the bottom limiting groove 14.

[0060] Finally, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A self-limiting pallet for logistics, comprising two parallel side support plates (3), a middle support plate (10) is arranged in parallel between adjacent side support plates (3), the top of the side support plate (3) and the middle support plate (10) is fixedly connected with a side top plate (1) and a middle top plate (2), the side top plate (1) is located at the end of the side support plate (3) and the middle support plate (10), the middle top plate (2) is located between adjacent side top plates (1), and a gap is left between adjacent middle top plates (2); characterized in that: The inner side of the side support plate (3) is provided with an auxiliary plate (4), a chamber accommodating the limiting plate (6) is arranged in the inside of the side support plate (3), a chamber accommodating the rod body pressing block (16) is arranged in the inside of the auxiliary plate (4), the chamber in the side support plate (3) and the chamber in the auxiliary plate (4) are communicated through the plate body gap (19); the rod body pressing block (16) and the limiting plate (6) are all provided with a tooth-shaped part connected with the linkage tooth belt (21), the linkage tooth belt (21) is connected with two linkage rotating wheels (22), the linkage rotating wheel (22) is rotatably connected with the auxiliary plate (4) through the rotating wheel shaft body (23); the top of the rod body pressing block (16) is provided with a pressing rod (7), the pressing rod (7) extends from the top end of the side top plate (1), the position of the limiting plate (6) corresponding to the side support plate (3) and the side top plate (1) is provided with a limiting plate outlet (5); the bottom of the rod body pressing block (16) is provided with a reset spring.

2. The self-limiting pallet for logistics use according to claim 1, characterized in that: The pressing rod (7) is provided with a plate body shaft sleeve (15) when passing through the bottom surface of the side top plate (1), the pressing rod (7) relatively slides in the plate body shaft sleeve (15); the bottom of the rod body pressing block (16) is provided with a pressing block shaft body (17), the pressing block shaft body (17) is inserted into the shaft body base (18) and moves relatively with the shaft body base (18); the shaft body base (18) is located at the bottom surface of the chamber of the auxiliary plate (4), and a reset spring is arranged between the bottom surface of the pressing block shaft body (17) and the bottom surface of the shaft body base (18).

3. The self-limiting pallet for logistics use according to claim 2, characterized in that: The rotating wheel shaft bodies (23) are vertically arranged in pairs in the chamber of the auxiliary plate (4), the rotating wheel shaft bodies (23) are respectively rotatably connected with the linkage rotating wheels (22), the adjacent linkage rotating wheels (22) are connected through the linkage tooth belt (21), the linkage tooth belt (21) is respectively machined with a belt body tooth-shaped part (24) on the side surface facing the rod body pressing block (16) and the limiting plate (6), the side surface of the rod body pressing block (16) facing the linkage tooth belt (21) and the linkage tooth belt (21) are respectively machined with a block body tooth-shaped part (25) matched with the belt body tooth-shaped part (24), and the belt body tooth-shaped part (24) is located on the side surface of the limiting plate (6) facing the linkage tooth belt (21) and is fixedly connected with the limiting plate (6).

4. The self-limiting pallet for logistics use according to claim 1, characterized in that: The side top plate (1) and the middle support plate (10) are machined with an auxiliary groove (9) at the middle position, and the side top plate (1) and the middle support plate (10) are also symmetrically machined with a supporting groove (8) at the positions on both sides of the auxiliary groove (9).

5. The self-limiting pallet for logistics use according to claim 4, characterized in that: The auxiliary groove (9) is used to place a supporting plate base (12) inside, the supporting plate base (12) is connected with an auxiliary supporting plate (11), the auxiliary supporting plate (11) extends after passing through the gap between the adjacent middle top plates (2), and the top end surface of the auxiliary supporting plate (11) is equal to or higher than the top end surface of the pressing rod (7).

6. The self-limiting pallet for logistics use according to claim 5, characterized in that: An edge corner supporting block (26) is also arranged in the gap between the adjacent middle top plates (2), the edge corner supporting block (26) is distributed at the edge corner position of the tray, and the bottom surface of the edge corner supporting block (26) is flush with the bottom surface of the supporting plate base (12).

7. The self-limiting pallet for logistics use according to any one of claims 1 to 6, characterized in that: The limiting plate outlet (5) is inserted with a rubber plug end cover when not in use.

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