A plastic box and its turnover bracket

Abstract

The present invention relates to the technical field of goods transfer tools, and particularly relates to a plastic box and its turnover bracket. The plastic box includes a bottom plate, a wall plate radially extending around the edge of the bottom plate, and a ring plate arranged around the inner wall of the wall plate; a convex plate is formed by protruding on the lower surface of the bottom plate, at least part of the wall plate is perpendicular to the surface of the convex plate, and an inward concave fitting groove is provided in the part where the wall plate is perpendicular to the surface of the convex plate, and wing plates extending towards each other are provided on both edges of the fitting groove; the projection of the intersection line between the convex plate and the bottom plate on the upper surface of the ring plate is between the inner and outer boundary contours of the ring plate; by pushing or pulling the plastic box along the extension direction of the convex rib, the two limiting plates can be opened to a flush position and coupled in the fitting groove, or rotated out of the fitting groove, so as to quickly realize the connection and separation of the plastic box and the turnover bracket, improve the transfer of multiple plastic boxes stably connected at one time, improve the efficiency of goods turnover, and ensure the stability of the stacked plastic boxes.

Description

Technical Field

[0001] The present invention relates to the technical field of goods transfer tools, and particularly to a plastic box and its turnover bracket. Background Art

[0002] A plastic box refers to a box injection-molded from plastic materials with strong impact resistance such as low-pressure high-density polyethylene (HDPE) or polypropylene (PP), and is generally used for the turnover and transportation of food, industrial parts, handicraft goods, etc.

[0003] Existing plastic boxes generally achieve positioning connection by setting convex columns at the corners of the bottom surface and concave holes at the corners of the top surface. When stacking up and down, the convex columns are embedded into the concave holes. It is difficult to align the convex columns and the concave holes, and the connection contact surface between the convex columns and the concave holes is small. When stacking plastic boxes up and down, it is not stable enough. During the process of loading onto a vehicle and transferring to a warehouse, it is not convenient to lift and transfer by a forklift, and it is easy to be displaced during handling. In addition, when manually handling, the number of plastic boxes that can be carried at one time is limited, the goods turnover efficiency is low, and the labor intensity is high. Summary of the Invention

[0004] I. Technical Problems to be Solved

[0005] The purpose of the present invention is to provide a plastic box and its turnover bracket, in which the plastic boxes can be quickly stacked up and down stably and are not easily displaced; and the plastic box can be quickly connected to or detached from the turnover bracket, so as to realize the stable connection of multiple plastic boxes at one time for transportation, and improve the efficiency of goods turnover.

[0006] II. Technical Solutions

[0007] The present invention is realized through the following technical solutions:

[0008] The present invention provides a plastic box, including:

[0009] A bottom plate, a convex plate is formed by protruding on the lower surface of the bottom plate; and,

[0010] A wall plate extending radially around the edge of the bottom plate, at least part of the wall plate is perpendicular to the surface of the convex plate, and an inward concave fitting groove is provided in the part where the wall plate is perpendicular to the surface of the convex plate, and wing plates extending towards each other are provided on both sides of the fitting groove;

[0011] A ring plate is arranged around the inner wall of the wall plate. The projection of the intersection line of the convex plate and the bottom plate on the upper surface of the ring plate is between the inner and outer side boundary contours of the ring plate. When stacking the plastic boxes up and down, the bottom convex plate of the upper plastic box is placed on the ring plate of the lower plastic box to form a stable fitting connection, improving the stability of stacking. At the same time, it is ensured that when stacking up and down, the fitting grooves of each plastic box are in an aligned position up and down, which is convenient to cooperate with the turnover bracket to connect and fix the position of the plastic box.

[0012] Preferably, a plurality of guide blocks perpendicular to the surface of the ring plate are provided between the upper surface of the ring plate and the inner wall of the wall plate, a plurality of guide grooves are provided at the edge of the convex plate, the guide blocks and the guide grooves are arranged opposite to each other in the radial direction, and the guide blocks and the guide grooves are aligned and matched, so that the plastic boxes can be quickly matched and stacked up and down.

[0013] Preferably, the wall plate is square in configuration, and the engaging groove is provided in the middle of one of the longer side walls of the wall plate. When the plastic boxes are stacked up and down, the wall plates are aligned neatly up and down, and the engaging groove has a width sufficient to couple and fix the plastic box with the turnover bracket.

[0014] Preferably, the wall panel is provided with guide blocks at least on both sides of its longer side wall and in the middle of its shorter side wall. The provision of multiple guide blocks enables the plastic box to have multiple fixed points for determining positions in the circumferential direction, and also plays an anti-overturning role.

[0015] Preferably, two strip grooves are provided in parallel on both sides of the bottom surface of the convex plate, and the strip grooves can be conveniently matched with the convex ridges of the turnover bracket, so that the plastic box has the freedom to move along the length direction of the convex ridges.

[0016] The present invention proposes a turnover bracket for fixing a plastic box, comprising:

[0017] Pallet;

[0018] A central axis rod vertically fixed to the middle of one side of the upper surface of the pallet;

[0019] Two adjacent side edges are rotatably connected to the central axis rod, and limit plates with opening and closing states are formed on both sides of the central axis rod. The side edges of the two limit plates that are farther apart are coupled to the engaging grooves so that the plastic box is close to the surface of the limit plates; when the two limit plates are closed, the limit plates are separated from the engaging grooves, and when the two limit plates are opened, their side edges are coupled to the engaging grooves to fix the plastic box;

[0020] The locking member comprises an action unit capable of being connected and separated, and a matching unit. When the action unit is connected with the matching unit, the two limit plates are positioned in parallel with flush surfaces.

[0021] Preferably, the action unit is a locking hook, the tail of the locking hook is hinged to the back of one of the limit plates, and the end is hook-shaped, and the matching unit is a fixing column that is snap-fitted with the hook-shaped end of the locking hook, and the fixing column is fixed to the back of the other limit plate.

[0022] Preferably, two convex ridges are provided on the surface of the pallet. When the limiting plate is fixed by the locking member, the plane where its front side is located is perpendicular to the extending direction of the convex ridges. When the locking member is connected, the two limiting plates are in an open and flush position. The surface of the limiting plate is flatly attached to the inner wall of the fitting groove, so that the connection between the plastic box and the circumferential bracket is stable. The strip-shaped groove at the bottom of the plastic box is slidably connected to the convex ridges, and the plastic box can slide along the extending direction of the convex ridges to adjust its position. When the plastic box slides along the convex ridges towards the limiting plate, the two relatively closed limiting plates can be pushed and opened to both sides until the edges of both sides of the limiting plate are coupled in the fitting groove, and the limiting plate fits against the rear wall of the plastic box.

[0023] Preferably, a card slot for engaging with the wing plate is provided on the side of the limiting plate, and the part of the limiting plate in front of the card slot is longer than the part behind the card slot. When the limiting plate is in an open position and is coupled to the fitting groove, the wing plate is simultaneously engaged in the card slot, forming a two-fold connection effect, making the connection between the plastic box and the turnover bracket more stable.

[0024] Preferably, a long groove is provided on the surface of the convex ridge, and a plurality of rolling elements are arranged at intervals in the long groove. The rolling elements are balls or rollers. The rolling elements reduce the resistance when pushing and pulling the plastic box in the extending direction of the convex ridge, and can enable the plastic box to be quickly and fixedly connected to the turnover bracket.

[0025] III. Beneficial Effects

[0026] The present invention has the following beneficial effects compared with the prior art:

[0027] 1. In the present invention, the wall plate of the plastic box has an inwardly concave fitting groove structure, and the wall surrounds the edge of the bottom plate. There is a section of inwardly concave structure corresponding to the fitting groove on the bottom plate. This structure can quickly align and find the position when the plastic boxes are stacked up and down, and play a guiding role, enabling the upper and lower plastic boxes to be quickly fitted and stacked. In addition, when the plastic boxes are stacked up and down, the intersection line K of the convex plate and the bottom plate of the upper plastic box is between the inner boundary contour line A and the outer boundary contour line B of the ring plate of the lower plastic box, so that the convex plate at the bottom of the upper plastic box is stably placed on the ring plate of the lower plastic box, and the stacked plastic boxes can be stably fitted and connected and are not easily displaced.

[0028] 2. By providing a plurality of guide blocks, the plastic box has a plurality of fixed points for determining the alignment position in the circumferential direction. At the same time, the guide blocks also provide a plurality of connection points at different positions for the plastic box to be stacked up and down in the circumferential direction, preventing the plastic box from tipping over or shaking, and improving the stability of the plastic box during storage and transportation stacking.

[0029] 3. By pushing or pulling the plastic box along the extension direction of the convex rib, the two limiting plates can be opened to the flush position and coupled in the fitting groove, or rotated out of the fitting groove, so as to quickly realize the connection and separation of the plastic box and the turnover bracket, improve the connection of multiple plastic boxes stably at one time for transportation, and improve the efficiency of goods turnover. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic three-dimensional structure diagram of the present invention;

[0031] Figure 2 Schematic structure diagram of the plastic box;

[0032] Figure 3 Bottom view of the plastic box;

[0033] Figure 4 Schematic structure diagram of the front side of the turnover bracket;

[0034] Figure 5 Schematic structure diagram of the back side of the turnover bracket;

[0035] 1. Bottom plate; 101. Convex plate; 1011. Guide groove; 1012. Strip groove; 2. Wall plate; 201. Fitting groove; 202. Wing plate; 3. Ring plate; 4. Guide block; 5. Support plate; 6. Central shaft rod; 7. Limiting plate; 701. Card slot; 8. Locking member; 801. Locking hook; 802. Fixed column; 9. Convex rib; 901. Long groove; 902. Rolling member; 10. Universal wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] Plastic boxes are widely used in the turnover transportation of food, industrial parts, handicrafts, etc., which is convenient for batch transportation and handling. During the process of loading onto a vehicle and transporting to a warehouse, since the stacking connection between the plastic boxes is not stable enough, it is not convenient to lift and transport them by a forklift. And the number of plastic boxes that can be carried manually at one time is limited, with low work efficiency and high intensity.

[0037] In the present invention, a plastic box and a turnover bracket used in cooperation with the plastic box are proposed. Improvements are made to the structure of the plastic box, so that the plastic boxes can be stacked stably up and down, and can be quickly connected to and detached from the turnover bracket, realizing the stable connection of multiple plastic boxes at one time for transportation, and improving the efficiency of goods turnover.

[0038] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0039] The present invention proposes a plastic box, which at least comprises a bottom plate 1, a wall plate 2 radially extending around the edge of the bottom plate 1, and a ring plate 3 arranged around the inner wall of the wall plate 2. A convex plate 101 is formed on the lower surface of the bottom plate 1, and the thickness of the convex plate 101 is equal to the distance from the upper surface of the ring plate 3 to the upper edge of the wall plate 2. The wall plate 2 is at least partially perpendicular to the surface of the convex plate 101, and has an inwardly concave fitting groove 201 at the part of the wall plate 2 perpendicular to the surface of the convex plate 101, and the two side edges of the fitting groove 201 have wing plates 202 extending toward each other; the projection of the boundary line K between the convex plate 101 and the bottom plate 1 on the upper surface of the ring plate 3 is between the inner boundary contour line A and the outer boundary contour line B of the ring plate 3.

[0040] When the plastic boxes are stacked up and down, the boundary line K between the convex plate 101 of the upper plastic box and the bottom plate 1 is between the inner boundary contour line A and the outer boundary contour line B of the ring plate 3 of the lower plastic box, so that the bottom convex plate 101 of the upper plastic box is stably placed on the ring plate 3 of the lower plastic box, and the plastic boxes stacked up and down can be embedded and connected, not easy to dislocate, and have high stability; in addition, since the wall panel 2 of each plastic box has an inwardly concave embedding groove 201, and since the wall panel 2 is arranged around the edge of the bottom plate 1, that is, the bottom plate 1 also has a concave structure corresponding to the embedding groove 201, this structure can provide the function of accurately aligning the position and guiding the embedding when the plastic boxes are stacked up and down. After stacking, the embedding groove 201 of each plastic box is in an upward and downward aligned position, which is convenient for cooperating with the turnover bracket to connect and fix the position of the plastic box.

[0041] In addition, a plurality of guide blocks 4 perpendicular to the surface of the ring plate 3 are provided between the upper surface of the ring plate 3 and the inner wall of the wall plate 2, and a plurality of guide grooves 1011 are opened at the edge of the convex plate 101. The guide blocks 4 and the guide grooves 1011 are arranged one by one in the radial direction, and the guide blocks 4 and the guide grooves 1011 are aligned and matched, and the guide blocks 4 slide radially along the guide grooves 1011 to quickly stack plastic boxes.

[0042] The wall panel 2 is at least partially perpendicular to the surface of the convex plate 101. Preferably, the wall panel 2 is completely perpendicular to the surface of the convex plate 101 in the circumferential direction. Specifically, the wall panel 2 may be a square configuration with a prismatic outer wall or a cylindrical outer wall.

[0043] See also Figure 2-3, the wall panel 2 has a square configuration. Among them, the fitting groove 201 is opened in the middle of one of the longer side walls of the wall panel 2. At this time, the fitting groove 201 has a width sufficient to stably fix the plastic box and the turnover bracket through coupling connection. The wall panels 2 are neatly stacked in an up-and-down alignment, which is convenient for storage and transportation. In this embodiment, guide blocks 4 are respectively provided on at least both sides of the longer side wall and the middle of the shorter side wall of the wall panel 2. The setting of multiple guide blocks 4 provides multiple fixed points for determining the alignment position of the plastic box in the circumferential direction. At the same time, since the guide blocks 4 provide multiple connection points at different positions for the vertical stacking of the plastic boxes in the circumferential direction, it has the effect of preventing the plastic boxes from tipping over.

[0044] Among them, two strip-shaped grooves 1012 are parallelly opened on both sides of the bottom surface of the convex plate 101. The strip-shaped grooves 1012 can be conveniently engaged with the convex ribs 9 of the turnover bracket, so that the plastic box has the freedom to move along the length direction of the convex ribs 9.

[0045] In the present invention, a turnover bracket used in cooperation with the plastic box is also proposed. It includes a pallet 5 at the bottom, a central shaft rod 6 is fixed in the middle of one side edge perpendicular to the upper surface of the pallet 5. It also includes two limiting plates 7. The two limiting plates 7 are both rotatably connected to the central shaft rod 6, and the connection positions are respectively located at the adjacent side plates of the two limiting plates 7. The two limiting plates 7 form a structure that can be opened and closed to switch the opening and closing state on both sides of the central shaft rod 6. The relatively far side edges of the two limiting plates 7 can be coupled and connected to the fitting groove 201. When coupled and connected, the plastic box is close to the surface of the limiting plate 7. In addition, the turnover bracket further includes a locking member 8. The locking member 8 specifically includes an operating unit and a cooperating unit. After the limiting plate 7 is coupled with the fitting groove 201, the operating unit and the cooperating unit are connected, and the two limiting plates 7 are positioned at parallel and flush surfaces, and the limiting plate 7 is attached to the rear wall of the plastic box.

[0046] In addition, a handrail can be fixed above the pallet 5 on the same side as the central shaft rod 6, and universal wheels 10 can be provided at the bottom of the pallet 5. Pulling the handrail can drag the turnover bracket to move, realizing the transfer of the plastic box.

[0047] Among them, the operating unit is a locking hook 801. The tail of the locking hook 801 is hinged to the back surface of one of the limiting plates 7, and the end is hook-shaped. The cooperating unit is a fixing column 802 that is buckled and connected to the hook-shaped end of the locking hook 801. The fixing column 802 is fixed to the back surface of the other limiting plate 7. Rotating the locking hook 801 can buckle the hook-shaped end of the locking hook 801 to the fixing column 802, so that the locking member 8 is in a connected state.

[0048] As an implementation manner of the present invention, two convex ribs 9 are provided on the surface of the pallet 5, and the strip-shaped grooves 1012 on the bottom plate 1 of the plastic box are slidably connected to the corresponding convex ribs 9. The extending direction of the convex ribs 9 is perpendicular to the plane of the front side of the limiting plate 7 when it is fixed by the locking member 8. The plastic box can slide along the extending direction of the convex ribs 9 to adjust its position. Stack the plastic boxes at one end of the convex ribs 9 away from the limiting plate 7, and then slide the plastic boxes along the convex ribs 9 towards the limiting plate 7. The plastic boxes will push and open the two relatively closed limiting plates 7 to both sides until the edges of the two sides of the limiting plate 7 are coupled to the fitting grooves 201, and the limiting plate 7 is attached to the rear wall of the plastic box. Then, connect the locking member 8, and the two limiting plates 7 can be fixed in the open and flush positions.

[0049] In addition, a card slot 701 for engaging with the wing plate 202 is provided at the side of the limiting plate 7. The part of the limiting plate 7 in front of the card slot 701 is longer than the part behind the card slot 701. When the limiting plate 7 is in the open position and coupled to the fitting groove 201, the wing plate 202 is simultaneously engaged in the card slot 701, forming a two-fold connection effect, making the connection between the plastic box and the turnover bracket more stable.

[0050] To reduce the resistance of sliding and pushing the plastic box in the extending direction of the convex ribs 9, a long groove 901 is provided on the surface of the convex ribs 9, and a number of rolling members 902 are arranged at intervals in the long groove 901. The rolling members 902 can be ball bearings or rollers. When the plastic box is placed on the pallet 5 for pushing and pulling movement, the rolling members 902 are in contact with and fixed to the bottom surface of the lowermost plastic box, enabling the plastic box to be quickly fixedly connected to or disconnected from the turnover bracket.

[0051] The cooperation and use method of the plastic box and the turnover bracket:

[0052] (1) Stack the plastic boxes one above the other at one end of the convex ribs 9 away from the limiting plate 7;

[0053] (2) Slide the plastic boxes along the extending direction of the convex ribs 9 towards the limiting plate 7. The plastic boxes will push and open the two relatively closed limiting plates 7 to both sides until the edges of the two sides of the limiting plate 7 are coupled to the fitting grooves 201. At this time, the limiting plate 7 is attached to the rear wall of the plastic box;

[0054] (3) Hook the locking hook 801 of the locking member 8 to the fixing column 802, and the two limiting plates 7 are fixed in the open and flush positions. At this time, the limiting plate 7 is always open and coupled to the fitting groove 201, and all the stacked plastic boxes above and below cannot move and break away from the turnover bracket;

[0055] (4) Move the turnover bracket to realize the transfer of the plastic boxes. When unloading, loosen the locking member 8 and pull the plastic boxes along the direction away from the limiting plate 7 until the two limiting plates 7 gradually open and disengage from the fitting grooves 201.

[0056] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various variations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope of the present invention. The technical content for which the present invention requests protection has been fully recorded in the claims.

Claims

1. A plastic box, characterized in that, Comprising: A bottom plate, with a convex plate protruding from the lower surface of the bottom plate; And, A wall plate extending radially around the edge of the bottom plate, at least part of the wall plate being perpendicular to the surface of the convex plate, and having a concave fitting groove in the part where the wall plate is perpendicular to the surface of the convex plate, and wing plates extending towards each other at both edges of the fitting groove; A ring plate, which is arranged around the inner wall of the wall plate, and the projection of the intersection line between the convex plate and the bottom plate on the upper surface of the ring plate is between the inner and outer boundary contours of the ring plate; Wherein, the plastic box is fixed by a turnover bracket, and the turnover bracket includes: a support plate; a central shaft rod vertically fixed in the middle of one side of the upper surface of the support plate; two limiting plates rotatably connected to the central shaft rod at the middle parts of two adjacent sides and forming a limiting state with an opening and closing state on both sides of the central shaft rod, and the farther sides of the two limiting plates are coupled to the fitting groove of the plastic box so that the plastic box is close to the surface of the limiting plate; a locking member, the locking member includes an operating unit and a cooperating unit that can be connected and separated, and when the operating unit is connected to the cooperating unit, the two limiting plates are positioned in a parallel and flush position.

2. A plastic box according to claim 1, characterized in that, A plurality of guide blocks perpendicular to the surface of the ring plate are arranged between the upper surface of the ring plate and the inner wall of the wall plate, and a plurality of guide grooves are opened at the edge of the convex plate, and the guide blocks and the guide grooves are arranged in one-to-one correspondence in the radial direction.

3. A plastic box according to claim 2, characterized in that, The wall plate is in a square configuration, and the fitting groove is opened in the middle of one of the longer side walls of the wall plate.

4. A plastic box according to claim 3, characterized in that, The wall plate is provided with guide blocks at least on both sides of its longer side walls and in the middle of its shorter side walls.

5. A plastic box according to claim 4, wherein, Two strip-shaped grooves are opened in parallel on both sides of the bottom surface of the convex plate.

6. A turnover bracket for fixing the plastic box according to any one of claims 1-5.

7. The turnover bracket according to claim 6, characterized in that, The operating unit is a locking hook, the tail of the locking hook is hinged to the back surface of one of the limiting plates, and the end is in a hook shape, and the cooperating unit is a fixing column that is buckled and connected to the hook-shaped end of the locking hook, and the fixing column is fixed on the back surface of the other limiting plate.

8. A turnover bracket according to claim 7, characterized in that, Two convex ribs are arranged on the surface of the support plate. When the limiting plate is fixed by the locking member, the plane where the front side surface of the limiting plate is located is perpendicular to the extending direction of the convex ribs.

9. The turnover bracket according to claim 8, characterized in that, A clamping groove for engaging with the wing plate is arranged on the side of the limiting plate, and the part of the limiting plate in front of the clamping groove is longer than the part of the limiting plate behind the clamping groove.

10. The turnover bracket according to claim 9, characterized in that, A long groove is opened on the surface of the convex rib, and a plurality of rolling elements are arranged at intervals in the long groove, and the rolling elements are balls or rollers.

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