Tray convenient to stack and stacking method of tray

Abstract

The tray comprises a bearing platform and supporting legs fixed to the lower surface of the bearing platform, a plurality of supporting columns in one-to-one correspondence with the supporting legs are fixed to the upper surface of the bearing platform, each supporting leg is provided with a cavity with a downward opening, and sliding columns in sliding connection with the supporting legs are arranged in the cavities. A baffle and a limiting ring are fixedly welded in the cavity, and a limiting protrusion is fixedly welded to the outer side surface of the sliding column. The sliding column has a first state and a second state in the cavity, in the first state, the upper end face of the sliding column makes contact with the lower surface of the baffle, and in the second state, the lower surface of the limiting protrusion makes contact with the upper surface of the limiting ring. The supporting legs are provided with through holes, the sliding columns are provided with marks, and the marks coincide with the through holes in the first state. An operator can be reminded of whether the trays on the upper layer and the lower layer are stacked in order or not in time, the situation that the trays on the upper layer roll over due to the fact that the trays are not aligned is avoided, and safety and reliability are achieved.

Description

Technical Field

[0001] The invention relates to a pallet, in particular to a pallet which is convenient to stack and a pallet stacking method. Background Art

[0002] Pallets are widely used in the production process of enterprises. When there is no need to place materials or the height of the materials placed on the pallet is low, in order to save the space occupied by the pallet, the pallets are often stacked up and down in multiple layers. However, in the actual production process, when the forklift lifts the pallet and stacks it on other pallets, the upper and lower pallets are often not completely aligned. If it is not discovered in time, after the forklift is completely separated from the pallet, the upper pallet is prone to tipping over or over, causing the items on the upper pallet to fall off or the upper pallet to fall off, resulting in the loss of the pallet or the items. Summary of the invention

[0003] The object of the present invention is to provide a conveniently stacked pallet which can timely remind whether the pallets are stacked in an aligned manner and avoid the pallets from tipping over.

[0004] The technical solution for achieving the purpose of the present invention is as follows:

[0005] A convenient stacking pallet comprises a load-bearing platform and support legs fixed on the lower surface of the load-bearing platform, a plurality of support columns corresponding to the support legs are fixed on the upper surface of the load-bearing platform, the support legs are provided with a downwardly open cavity, a sliding column slidably connected to the support legs is provided in the cavity, a baffle and a limit ring are welded and fixed in the cavity, and a limit protrusion is welded and fixed on the outer surface of the sliding column;

[0006] The sliding column has a first state and a second state in the cavity. When in the first state, the upper end surface of the sliding column contacts the lower surface of the baffle, and when in the second state, the lower surface of the limiting protrusion contacts the upper surface of the limiting ring.

[0007] The support leg is provided with a through hole, and the sliding column is provided with a mark. When in the first state, the mark coincides with the through hole.

[0008] After adopting the above structure, when it is necessary to stack the pallet on top of other pallets, the pallet is transported to the top of the lower pallet by a forklift and then slowly lowered. During the process of lowering the pallet, the forklift maintains the supporting force on the pallet, and after the sliding column contacts the supporting column, the sliding column and the supporting legs move relative to each other. When marks can be observed on the through holes of all the supporting legs, it means that the supporting legs of the upper pallet and the supporting columns of the lower pallet have been docked in place, and the supporting force of the forklift on the pallet can be removed, the forklift and the pallet are separated, and the stacking operation of the pallets is completed. Otherwise, it means that the supporting legs where the through holes without exposing the marks are located are not accurately docked with the supporting columns of the lower pallet, and the pallet needs to be lifted up and restacked again. The present invention can promptly remind the operator whether the upper and lower pallets are stacked neatly, avoiding the situation where the upper pallet tipping over due to misalignment of the pallets, which is safe and reliable.

[0009] Preferably, in order to facilitate the alignment of the sliding column and the supporting column, a stacking foot is fixed to the lower end of the sliding column, the lower end surface of the sliding column is welded to the upper end surface of the stacking foot, and the stacking foot has a downwardly opening docking cavity, and the inner diameter of the docking cavity gradually increases from top to bottom.

[0010] Preferably, in order to facilitate the docking of the support column and the stacking feet, a cover plate is provided at the upper end of the support column, and the cover plate is provided with a flat abutment surface and a downwardly inclined guide surface.

[0011] Preferably, in order to improve the structural strength of the supporting leg, when in the first state, the lower surface of the supporting leg contacts the upper end surface of the stacking foot.

[0012] Preferably, in order to improve the structural strength of the sliding column and the supporting leg, a plurality of reinforcing ribs are fixed on the sliding column, and the reinforcing ribs are in contact with the inner wall of the supporting leg.

[0013] Preferably, in order to ensure the structural strength of the sliding column, the lower end surface of the reinforcing rib is welded to the upper end surface of the stacking foot.

[0014] Preferably, in order to reduce the wear of the stacking feet and the cover plate, the inner wall of the stacking feet is provided with a wear-resistant coating, and the abutting surface and the guide surface of the cover plate are provided with a wear-resistant coating.

[0015] Preferably, in order to reduce the wear between the reinforcing ribs and the inner wall of the supporting leg, the outer surface of the reinforcing ribs and the inner wall of the supporting leg are provided with a wear-resistant coating.

[0016] Preferably, in order to ensure that the mark is eye-catching and easy to observe, the mark is a red block.

[0017] A method for stacking pallets, comprising the conveniently stackable pallet according to any one of claims 1 to 9, the method for stacking pallets comprising the following steps;

[0018] S1, the forklift lifts the pallet and then transports it to the top of the lower pallet. At this time, the sliding column slides downward to the second state, and the mark on the sliding column is covered by the supporting leg;

[0019] S2, the forklift lowers the pallet while maintaining support for the pallet, and after the sliding column contacts the support column, the sliding column and the support leg move relative to each other until the sliding column is in the first state and the mark is exposed from the through hole and can be observed;

[0020] S3. After observing that all the support legs have exposed marks, completely remove the forklift's support for the pallet, completely separate the forklift from the pallet, and complete the pallet stacking work. If at least one support leg mark is not exposed, lift the pallet again and repeat step S2. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 This is a schematic diagram of the support leg and sliding column structure in the first state of the present invention.

[0024] Figure 3 This is a schematic diagram of the supporting legs and sliding columns in the second state of the present invention.

[0025] Figure 4 It is a schematic diagram of the sliding column structure of the present invention. DETAILED DESCRIPTION

[0026] like Figures 1 to 4 As shown, the convenient stacking pallet of the present invention comprises a load-bearing platform 1 and a support leg 2 fixed to the lower surface of the load-bearing platform, a plurality of support columns 3 corresponding to the support legs are fixed to the upper surface of the load-bearing platform, a cover plate 4 is arranged at the upper end of the support column, the cover plate is provided with a flat abutment surface 5 and a downwardly inclined guide surface 6, the support leg is provided with a downwardly open cavity 7, a sliding column 8 slidably connected to the support leg is arranged in the cavity, a baffle 9 and a limit ring 10 are welded and fixed in the cavity, a limit protrusion 11 is welded and fixed on the outer surface of the sliding column, and a lower end of the sliding column is provided with a sliding column 8 connected to the support leg in a sliding manner. A stacking foot 12 is fixed, and the lower end face of the sliding column is welded to the upper end face of the stacking foot. The stacking foot has a downwardly open docking cavity 121, and the inner diameter of the docking cavity gradually increases from top to bottom. The sliding column has a first state and a second state in the cavity. When in the first state, the upper end face of the sliding column contacts the lower surface of the baffle, and the lower surface of the supporting leg contacts the upper end face of the stacking foot. When in the second state, the lower surface of the limiting protrusion contacts the upper surface of the limiting ring; the supporting leg is provided with a through hole 21, and the sliding column is provided with a mark 81. When in the first state, the mark coincides with the through hole.

[0027] In some embodiments, Figures 2 to 4 As shown, a plurality of reinforcing ribs 13 are fixed on the sliding column, wherein the reinforcing ribs are in contact with the inner wall of the supporting leg, and the lower end surface of the reinforcing ribs is welded to the upper end surface of the stacking foot.

[0028] In some embodiments, the inner wall of the stacking foot is provided with a wear-resistant coating, and the abutting surface and the guide surface of the cover plate are provided with a wear-resistant coating.

[0029] In some embodiments, the outer surface of the reinforcing rib and the inner wall of the supporting leg are provided with a wear-resistant coating.

[0030] In some embodiments, the mark is a red block, or may be a block of other colors such as orange.

[0031] The present invention can promptly remind the operator whether the upper and lower pallets are neatly stacked, thereby avoiding the situation where the upper pallet tipping over is caused by the misalignment of the pallets, and is safe and reliable.

[0032] A method for stacking pallets, comprising the conveniently stackable pallet according to any one of claims 1 to 9, the method for stacking pallets comprising the following steps;

[0033] S1, the forklift lifts the pallet and then transports it to the top of the lower pallet. At this time, the sliding column slides downward to the second state, and the mark on the sliding column is covered by the supporting leg;

[0034] S2, the forklift lowers the pallet while maintaining support for the pallet, and after the sliding column contacts the support column, the sliding column and the support leg move relative to each other until the sliding column is in the first state and the mark is exposed from the through hole and can be observed;

[0035] S3. After observing that all the support legs have exposed marks, completely remove the forklift's support for the pallet, completely separate the forklift from the pallet, and complete the pallet stacking work. If at least one support leg mark is not exposed, lift the pallet again and repeat step S2.

[0036] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. Conveniently stackable tray, characterized by: It comprises a load-bearing platform and a support leg fixed on the lower surface of the load-bearing platform, a plurality of support columns corresponding to the support legs are fixed on the upper surface of the load-bearing platform, the support leg is provided with a cavity opening downward, a sliding column slidably connected to the support leg is provided in the cavity, a baffle and a limit ring are welded and fixed in the cavity, and a limit protrusion is welded and fixed on the outer surface of the sliding column; The sliding column has a first state and a second state in the cavity. When in the first state, the upper end surface of the sliding column contacts the lower surface of the baffle, and when in the second state, the lower surface of the limiting protrusion contacts the upper surface of the limiting ring. The support leg is provided with a through hole, and the sliding column is provided with a mark. When in the first state, the mark coincides with the through hole.

2. The convenient stacking tray according to claim 1, characterized in that: A stacking foot is fixed to the lower end of the sliding column, the lower end surface of the sliding column is welded to the upper end surface of the stacking foot, and the stacking foot has a docking cavity opening downward, and the inner diameter of the docking cavity gradually increases from top to bottom.

3. The convenient stacking tray according to claim 2, characterized in that: A cover plate is arranged at the upper end of the support column, and the cover plate is provided with a flat abutting surface and a downwardly inclined guide surface.

4. The convenient stacking tray according to claim 2, characterized in that: In the first state, the lower surface of the support leg contacts the upper end surface of the stacking foot.

5. The convenient stacking tray according to claim 2, characterized in that: A plurality of reinforcing ribs are fixed on the sliding column, and the reinforcing ribs are in contact with the inner wall of the supporting leg.

6. The convenient stacking tray according to claim 5, characterized in that: The lower end surface of the reinforcing rib is welded to the upper end surface of the stacking foot.

7. The convenient stacking tray according to claim 3, characterized in that: The inner wall of the stacking foot is provided with a wear-resistant coating, and the abutting surface and the guide surface of the cover plate are provided with a wear-resistant coating.

8. The convenient stacking tray according to claim 5, characterized in that: The outer surface of the reinforcing rib and the inner wall of the supporting leg are provided with a wear-resistant coating.

9. The convenient stacking tray according to claim 1, characterized in that: The mark is a red block.

10. A method for stacking pallets, characterized in that: A conveniently stackable pallet comprising any one of claims 1 to 9, wherein the pallet stacking method comprises the following steps; S1, the forklift lifts the pallet and then transports it to the top of the lower pallet. At this time, the sliding column slides downward to the second state, and the mark on the sliding column is covered by the supporting leg; S2, the forklift lowers the pallet while maintaining support for the pallet, and after the sliding column contacts the support column, the sliding column and the support leg move relative to each other until the sliding column is in the first state and the mark is exposed from the through hole and can be observed; S3. After observing that all the support legs have exposed marks, completely remove the forklift's support for the pallet, completely separate the forklift from the pallet, and complete the pallet stacking work. If at least one support leg mark is not exposed, lift the pallet again and repeat step S2.

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