Folding Pallet

Abstract

The present invention discloses a foldable tray, including a tray frame and a flexible bearing device; the tray frame includes a central seat, on which four supporting arms arranged in an X shape are installed, at least two opposite supporting arms are rotating supporting arms installed on the central seat for transverse rotation, and an unfolding and fixing device is provided between the rotating supporting arms and the central seat; supporting feet are fixedly provided at the bottom of the supporting arms, and tightening heads are provided at the ends of each supporting arm, and tightening straps are connected to the edges of the flexible bearing device, and a tightening adjustment device is provided between at least one tightening head and the corresponding supporting arm. When the present invention is not in use, the flexible bearing device can be removed and folded for storage separately, and the rotating supporting arm can be rotated to close to one side of the adjacent supporting arm, and the volume of the tray frame is significantly reduced, which is convenient for storage and carrying on a vehicle.

Description

Technical Field

[0001] The invention relates to a pallet, in particular to a foldable pallet. Background Art

[0002] Pallets are used as load-bearing devices when items are organized into cargo units during loading and unloading, transportation, handling, and storage. When in use, the upper surface of the pallet is used as a load-bearing surface to organize the goods, and the lower pier rests on the ground and is provided with fork holes for easy forklift access. Pallets are widely used in logistics, freight, warehouse management and other industries due to their advantages such as low dead weight, easy emptying, easy loading, and convenient quantity counting. Most existing pallets are integrated fixed structures. When not in use, their stacking will take up a large storage space, which is not conducive to saving storage space in places such as warehouses, nor is it conducive to carrying with vehicles in occasions such as freight. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a foldable tray which can significantly reduce the volume when not in use and is convenient for storage or carrying on a vehicle.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a foldable pallet, including a disc frame and a flexible supporting device arranged on the upper part of the disc frame; the disc frame includes a center seat, and four support arms arranged in an X shape are installed on the center seat, at least two opposite support arms are rotating support arms installed on the center seat for transverse rotation, and an unfolding fixing device is provided between the rotating support arms and the center seat; supporting feet are fixedly provided at the bottom of the support arms, and tightening heads are respectively provided at the ends of each of the support arms, and the edges of the flexible supporting device are connected with tightening straps surrounding the four tightening heads, and a tightening adjustment device is provided between at least one of the tightening heads and the corresponding support arm.

[0005] As a preferred technical solution, the tightening adjustment device includes a tightening slide rod fixedly arranged on the tightening head and slidably installed at the free end of the support arm, a tightening adjustment screw is fixedly arranged on the free end of the support arm, a screw through hole corresponding to the tightening adjustment screw is arranged on the tightening head, and a tightening adjustment nut that can be pressed against the tightening head is installed on the tightening adjustment screw.

[0006] As a preferred technical solution, the expansion and fixing device includes an expansion connection hole set on the central seat, and the rotating support arm is provided with an expansion and fixing hole corresponding to the expansion connection hole, and an expansion and fixing pin is connected between the expansion connection hole and the expansion and fixing hole.

[0007] As a preferred technical solution, the center seat is provided with folding connection holes corresponding to each of the rotating support arms, the rotating support arms are provided with folding fixing holes corresponding to the folding connection holes, and a folding fixing pin is connected between the folding connection holes and the folding fixing holes.

[0008] As a preferred technical solution, the unfolding fixing hole is also provided as the folding fixing hole, and the unfolding fixing pin is also provided as the folding fixing pin.

[0009] As a preferred technical solution, the flexible bearing device comprises a bearing cloth arranged on the upper part of the disk rack, at least two reinforcing cloth strips are sewn onto the bearing cloth, and the edge of the bearing cloth is sewn to the tensioning strap.

[0010] As a preferred technical solution, the two opposite supporting arms are the rotating supporting arms.

[0011] As a preferred technical solution, the four support arms are all rotating support arms.

[0012] As a preferred technical solution, the bottom of the center seat is also fixed with supporting feet.

[0013] As a preferred technical solution, the tensioning strap is arranged in an open loop, and a hook device is provided between the ends of the opening of the tensioning strap.

[0014] Due to the adoption of the above technical solution, the foldable pallet includes a tray frame and a flexible bearing device arranged on the upper part of the tray frame; the tray frame includes a central seat, on which four supporting arms arranged in an X shape are installed, at least two opposite supporting arms are rotating supporting arms installed on the central seat for transverse rotation, and an unfolding and fixing device is provided between the rotating supporting arms and the central seat; supporting feet are fixedly provided at the bottom of the supporting arms, and a tightening head is provided at the end of each supporting arm, and a tightening strap surrounding the four tightening heads is connected to the edge of the flexible bearing device, and a tightening adjustment device is provided between at least one tightening head and the corresponding supporting arm. When in use, the present invention uses the unfolding and fixing device to fix the rotating supporting arm, and the four supporting arms arranged in an X shape can support the flexible bearing device, and the tightening adjustment device tightens the tightening strap so that the flexible bearing device can be flattened to improve the bearing capacity. When not in use, the tightening adjustment device relaxes the tightening strap, and the flexible carrying device can be removed and folded for storage separately, which is convenient for storage and carrying in a vehicle. The rotating support arm can be rotated close to the side of the adjacent support arm, and the volume of the disk rack is significantly reduced, which is also convenient for storage and carrying in a vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following drawings are intended only to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0016] Figure 1 1 is a schematic diagram of the overall three-dimensional structure of the first embodiment of the present invention, in which a partial cross-section of the carrier cloth is shown;

[0017] Figure 2 yes Figure 1 A schematic diagram of the structure at location I;

[0018] Figure 3 1 is a schematic diagram of the three-dimensional structure of a disk rack according to an embodiment of the present invention, which is in an unfolded state;

[0019] Figure 4 1 is a schematic diagram of the three-dimensional structure of a tray rack according to an embodiment of the present invention, which is in a folded state;

[0020] Figure 5 1 is a schematic diagram of an enlarged top view of a disk rack according to an embodiment of the present invention, in which a double-dotted line indicates the position of the rotating support arm after folding;

[0021] Figure 6 yes Figure 5 A magnified schematic diagram of the AA structure;

[0022] Figure 7 1 is a schematic diagram of the three-dimensional structure of the disk rack according to the second embodiment of the present invention, which is in an unfolded state;

[0023] Figure 8 1 is a schematic diagram of the three-dimensional structure of the disk rack according to the second embodiment of the present invention, which is in a folded state;

[0024] Fig. 9 1 is a schematic diagram of the structure of the disk rack in the second embodiment of the present invention, in which the double-dotted line indicates the position of the rotating support arm after folding.

[0025] In the figure: 1-flexible bearing device; 11-bearing cloth; 12-reinforced cloth strip; 2-plate rack; 21-center seat; 22-support arm; 23-rotating support arm; 24-fixed support arm; 25-unfolding connecting hole; 251-unfolding fixing pin; 26-folding connecting hole; 27-support foot; 3-tightening head; 31-tightening slide rod; 32-tightening adjusting screw; 33-screw through hole; 34-tightening adjusting nut; 35-anti-slip nut; 4-tightening drawstring; 41-hook device. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention are described only by way of illustration. Needless to say, those of ordinary skill in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0027] Embodiment 1:

[0028] like Figures 1 to 6 As shown together, the foldable tray includes a tray frame 2 and a flexible carrying device 1 disposed on the upper portion of the tray frame 2. In this embodiment, the tray frame 2 is used as a supporting frame, and the flexible carrying device 1 is used to carry items. The split structure is beneficial for reducing the volume of this embodiment when not in use.

[0029] The disk rack 2 includes a central seat 21, on which four support arms 22 arranged in an X shape are mounted. The four support arms 22 arranged in an X shape cooperate with the central seat 21 to roughly form a rectangular support frame; of course, preferably, the ends of the four support arms 22 are arranged in a rectangular shape.

[0030] At least two of the opposing supporting arms 22 are rotating supporting arms 23 that are laterally rotatably mounted on the central seat 21, and an unfolding and fixing device is provided between the rotating supporting arms 23 and the central seat 21. After the rotating supporting arms 23 are unfolded, the four supporting arms 22 can form an X-shaped arrangement, and the unfolding and fixing device can ensure the stability of the X-shaped support structure.

[0031] The deployment fixing device includes an deployment connection hole 25 provided on the center seat 21, and a deployment fixing hole corresponding to the deployment connection hole 25 is provided on the rotating support arm 23, and an deployment fixing pin 251 is connected between the deployment connection hole 25 and the deployment fixing hole. The center seat 21 described in this embodiment is a welded assembly structure in which the upper and lower plates and the rib plates therebetween are fixedly welded, and the deployment connection holes 25 are respectively provided on the upper plate and the lower plate. The deployment fixing pin 251 cooperates with the rotating pin of the rotating support arm 23 to form a two-point fixation for the rotating support arm 23, thereby ensuring the stability of the rotating support arm 23 after deployment. The deployment fixing pin 251 can be a conventional optical pin, a stepped pin shaft or a bolt, etc., and this embodiment is illustrated by using a bolt.

[0032] The central seat 21 is provided with folding connection holes 26 corresponding to the rotating supporting arms 23, and the rotating supporting arms 23 are provided with folding fixing holes corresponding to the folding connection holes 26, and a folding fixing pin is connected between the folding connection holes 26 and the folding fixing holes. Through the above structure, the rotating supporting arms 23 can be folded after being brought together, which can ensure stability after folding.

[0033] No matter the rotating support arm 23 is unfolded or folded, at any time, only one of the unfolding fixing pin 251 and the folding fixing pin is in operation. In this embodiment, in order to simplify the structure and reduce the cost, the unfolding fixing hole is also used as the folding fixing hole, and the unfolding fixing pin 251 is also used as the folding fixing pin. Of course, the unfolding connecting hole 25 and the folding connecting hole 26 are located on the same circle centered on the rotating pin.

[0034] Of course, the folding connection hole 26 may not be provided in this embodiment. When the rotating support arm 23 is rotated and folded, the unfolding fixing pin 251 is re-inserted into the unfolding connection hole 25, so that the unfolding fixing pin 251 serves as a limit to prevent the rotating support arm 23 from unfolding, thereby achieving a relatively stable folding. This solution should also be within the scope of protection.

[0035] The bottom of the bracket 22 is fixed with a support foot 27, and the four support feet 27 form a four-point stand to ensure the stability of the rack 2 when it is placed on the ground. The bottom of the center seat 21 of this embodiment is also fixed with a support foot 27, which can further improve the stability of the rack 2 when it is placed on the ground.

[0036] A tightening head 3 is provided at the end of each of the support arms 22. The edge of the flexible supporting device 1 is connected with a tightening strap 4 which surrounds the four tightening heads 3. The tightening strap 4 can be made of a wide braided rope, etc. Of course, the tightening strap 4 is sleeved on the outer sides of the four tightening heads 3.

[0037] The flexible bearing device 1 of this embodiment comprises a bearing cloth 11 arranged on the upper part of the tray 2. The bearing cloth 11 can be made of woven cloth, canvas, etc. At least two reinforcing cloth strips 12 are sewn on the bearing cloth 11. The reinforcing cloth strips 12 are sewn on the bearing cloth 11 as flexible reinforcing ribs, which can further strengthen the bearing cloth 11 without affecting the carrying items. The reinforcing cloth strips 12 can be made of woven belts, etc. Two reinforcing cloth strips 12 can be used and sewn into an X shape or a cross shape. Of course, four reinforcing cloth strips 12 can be used to form a cross shape, or three can be used to form a * shape, etc. This embodiment is illustrated by four reinforcing cloth strips 12 forming a cross shape. The edge of the bearing cloth 11 is sewn and connected with the tensioning strap 4. When the tensioning head 3 supports the tensioning strap 4, the bearing cloth 11 can be tensioned, and its carrying capacity is improved, so that the objects can be reduced from falling or bulging from the gap between the supporting arms 22.

[0038] A tightening adjustment device is provided between at least one of the tightening heads 3 and the corresponding support arm 22. Since the tightening strap 4 has a certain elasticity, the tightening strap 4 can be tightened by the tightening adjustment device to further improve the carrying capacity of the supporting cloth 11. Of course, the tightening strap 4 can also be loosened by the tightening adjustment device to facilitate the removal of the flexible supporting device 1 from the disc rack 2.

[0039] The tightening adjustment device includes a tightening slide bar 31 fixedly arranged on the tightening head 3 and slidably installed at the free end of the support arm 22. The support arm 22 in this embodiment is a square steel structure. The tightening slide bar 31 adopts a square steel structure with a cross section slightly smaller than that of the support arm 22. The tightening slide bar 31 is inserted into the inner hole of the support arm 22 to achieve the sliding installation of the tightening slide bar 31. The tightening head 3 in this embodiment is a square steel vertically welded on the tightening slide bar 31. A tightening adjustment screw 32 is fixedly arranged on the free end of the support arm 22. The tightening adjustment screw 32 in this embodiment is fixedly arranged at the port of the support arm 22 by a screw seat. The fixing setting can be welded, bolted, etc., and a mounting screw hole is arranged on the screw seat and the tightening adjustment screw 32 is installed. A fixing nut is installed near the mounting screw hole of the tightening adjustment screw 32, and the fixing setting of the tightening adjustment screw 32 is achieved by the mutual tightening of the fixing nut and the mounting screw. The tightening head 3 is provided with a screw through hole 33 corresponding to the tightening adjustment screw 32, and the tightening adjustment screw 32 is provided with a tightening adjustment nut 34 that can be pressed against the tightening head 3. The tightening strap 4 is pulled against the outside of the tightening head 3, and the tightening adjustment nut 34 is pressed against the inside of the tightening head 3. The tightening adjustment nut 34 is rotated, and the tightening adjustment nut 34 can move axially on the tightening adjustment screw 32, so that the tightening head 3 can tighten the tightening strap 4 outward, or inward to facilitate the loosening of the tightening strap 4. In this embodiment, an anti-slip nut 35 can also be additionally installed at the end of the tightening adjustment screw 32 to prevent the tightening slide bar 31 from sliding out when the tightening strap 4 is not supported in this embodiment.

[0040] This embodiment shows that the tensioning adjustment device is provided between the four tensioning heads 3 and the corresponding supporting arms 22 , so that the tensioning of a certain position of the carrier cloth 11 can be flexibly adjusted according to the tensioning condition of the carrier cloth 11 .

[0041] In this embodiment, due to the elasticity of the tensioning strap 4, each time the tensioning strap 4 is fully tightened to the extent that the tensioning strap 4 is loose enough to be removed, or each time the tensioning strap 4 is put on the four tensioning heads 3 to achieve full tightening, it becomes a cumbersome task to adjust the tensioning adjustment nut 34. In order to simplify this task, in this embodiment, the tensioning strap 4 is provided in an open loop, and a hook device 41 is provided between the ends of the opening of the tensioning strap 4. When the tensioning strap 4 needs to be loosened and removed, it is only necessary to simply adjust the individual tensioning adjustment nuts 34 to loosen them, and then operate the hook device 41 to release the hooking effect, and the entire tensioning strap 4 can be easily removed; similarly, when the tensioning strap 4 is re-installed, after the tensioning strap 4 is put on the four tensioning heads 3, the hook device 41 is first hooked, and the tensioning strap 4 is pre-tightened, and the individual tensioning adjustment nuts 34 can be simply adjusted to quickly achieve full tightening. The hook device 41 can be formed by two hooks respectively arranged at the two ends of the opening of the tensioning strap 4 .

[0042] The two opposite supporting arms 22 of this embodiment are the rotating supporting arms 23, and the other two opposite supporting arms 22 are the fixed supporting arms 24. The two fixed supporting arms 24 can be integrally formed with the same square steel, or can be welded to the central seat 21. When folding, one of the rotating supporting arms 23 is folded toward the fixed supporting arm 24, and the other rotating supporting arm 23 is folded toward the other fixed supporting arm 24.

[0043] The method of using this embodiment is as follows: when it is needed, the two rotating supporting arms 23 are rotated to the unfolded position, and fixed by the unfolding fixing device, so that the four supporting arms 22 form an X-shaped supporting structure; the flexible bearing device 1 is laid on the top of the disc rack 2, and the tensioning strap 4 is sleeved on the outside of the four tensioning heads 3, and the hook device 41 is hooked, the tensioning strap 4 is pre-tightened, and the individual tensioning adjustment nuts 34 are adjusted according to the tensioning condition of the bearing cloth 11, so that the tensioning strap 4 is gradually and completely tightened, and the bearing cloth 11 is laid flatly and tensioned on the disc rack 2 to form a bearing surface, and the five supporting feet 27 can form a fork hole under the disc rack 2, which is convenient for a forklift to carry and transport; when it is finished or needs to be carried with a vehicle, first operate the individual tensioning adjustment nuts 34 to relax the tensioning strap 4, preferably Optionally, loosen a tightening adjustment nut 34 in a tightening adjustment device near the hook device 41, so that the hook device 41 can be quickly relaxed. When the hook device 41 is relaxed to the point that the hook can be released, stop operating the tightening adjustment nut 34 to release the hooking effect, and the tightening strap 4 is completely relaxed. The flexible bearing device 1 can be easily removed, and the flexible bearing device 1 can be folded and stored; take out the unfolding fixing pin 251, and move the rotating support arm 23 closer to the corresponding fixed support arm 24. When the unfolding fixing hole coincides with the folding connecting hole 26, insert the unfolding fixing pin 251 to achieve folding and fixing. The disc rack 2 can form a nearly straight-line structure, and the overall volume is significantly reduced. When it is needed again, the disc rack 2 can be unfolded again, the flexible bearing device 1 can be laid, and the tightening strap 4 can be tightened.

[0044] This embodiment can not only meet the normal need of holding things, but also can significantly reduce the storage volume when not in use, making it convenient to store and carry in a car. When unfolding and folding, the operation is also very simple, and it has a high promotion value.

[0045] Embodiment 2:

[0046] like Figure 7 , Figure 8 and Fig. 9 As shown, the difference between this embodiment and the first embodiment is that the four supporting arms 22 are all rotating supporting arms 23, and the four rotating supporting arms 23 are arranged close to each other and folded. In this way, the two rotating supporting arms 23 close to each other in this embodiment can also be folded by folding the connecting holes 26 or by unfolding the fixing pins 251, and the operation is also very simple. The volume can also be reduced when not in use, which is convenient for storage and carrying.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. Folding pallet, characterized by: The utility model comprises a disk rack and a flexible bearing device arranged on the upper part of the disk rack; the disk rack comprises a central seat, four supporting arms arranged in an X shape are installed on the central seat, at least two opposite supporting arms are rotating supporting arms installed on the central seat for transverse rotation, and an unfolding fixing device is provided between the rotating supporting arms and the central seat; a supporting foot is fixedly provided at the bottom of the supporting arm, and a tightening head is provided at the end of each supporting arm respectively, and a tightening strap surrounding the four tightening heads is connected to the edge of the flexible bearing device, and a tightening adjustment device is provided between at least one tightening head and the corresponding supporting arm; The deployment fixing device comprises a deployment connection hole provided on the central seat, a deployment fixing hole corresponding to the deployment connection hole is provided on the rotating bracket, and a deployment fixing pin is connected between the deployment connection hole and the deployment fixing hole; The flexible bearing device comprises a bearing cloth arranged on the upper part of the disk frame, at least two reinforcing cloth strips are sewn onto the bearing cloth, and the edge of the bearing cloth is sewn and connected to the tensioning strap.

2. The foldable pallet according to claim 1, characterized in that: The tightening adjustment device includes a tightening slide rod fixedly arranged on the tightening head and slidably installed at the free end of the support arm, a tightening adjustment screw is fixedly arranged on the free end of the support arm, a screw through hole corresponding to the tightening adjustment screw is arranged on the tightening head, and a tightening adjustment nut which can be abutted against the tightening head is installed on the tightening adjustment screw.

3. The foldable pallet according to claim 1, characterized in that: The central seat is provided with folding connection holes corresponding to each of the rotating supporting arms, and the rotating supporting arms are provided with folding fixing holes corresponding to the folding connection holes, and a folding fixing pin is connected between the folding connection holes and the folding fixing holes.

4. The foldable pallet according to claim 3, characterized in that: The unfolding fixing hole is also provided as the folding fixing hole, and the unfolding fixing pin is also provided as the folding fixing pin.

5. The foldable pallet according to claim 1, characterized in that: The two opposite supporting arms are the rotating supporting arms.

6. The foldable pallet according to claim 1, characterized in that: The four supporting arms are all rotating supporting arms.

7. The foldable pallet according to claim 1, characterized in that: The bottom of the center seat is also fixed with supporting feet.

8. The foldable pallet according to any one of claims 1 to 7, characterized in that: The tensioning strap is arranged in an open loop, and a hook device is arranged between the ends of the opening of the tensioning strap.

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