Stackable tray with bidirectional size adjustment
The design of adjustable base components and threaded telescopic support components solves the problems of fixed pallet size and insufficient vertical load-bearing capacity, enables flexible adaptation to different container sizes and multi-layer stacking transportation, and improves transportation efficiency and safety.
Patent Information
- Application Number
- CN202422901808.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Traditional pallets are fixed in size and cannot adapt to containers of different sizes. They also have limited vertical load-bearing capacity, resulting in wasted space and a low load-bearing limit for fragile goods.
It adopts several size-adjustable base components and threaded telescopic vertical support components. The cargo width is adjusted through a gear rack transmission mechanism, and the support height is adjusted through a threaded drive mechanism. It is also equipped with GPS, temperature sensors, humidity sensors and RFID equipment to achieve intelligent management.
It realizes two-way size adjustment of the pallet, improves transportation efficiency, avoids space waste and the risk of cargo damage, enhances the vertical load-bearing capacity, and supports multi-layer stacking transportation.
Smart Images
Figure CN223479657U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of unitized container equipment technology, and in particular to a pallet with adjustable dimensions in two degrees of freedom and stackable properties. Background Technology
[0002] Pallets are a common transport tool in the logistics industry, a mechanical device used for stacking and handling. Goods to be transported are placed directly on the pallet surface, allowing for convenient handling by forklifts and other mechanized equipment. However, for loose goods, they often need to be wrapped in woven bags or wrapped in film to protect them and prevent them from scattering. The applicant found that common pallets are merely flat mechanical structures with forks, lacking adjustable loading platform dimensions and vertical stacking capacity. Faced with container loading equipment of different sizes and specifications on the market, fixed-size pallets often cannot occupy the entire loading plane through planar arrangement, resulting in wasted horizontal space. In addition, the load-bearing limit of some fragile goods is often too low, thus greatly limiting the number of layers that can be stacked on pallets. This stacking method, relying on the weight of the goods themselves, easily wastes the vertical storage space of large containers. Therefore, a two-way adjustable stackable pallet is needed, which has significant practical value in solving the problems of traditional pallets' inability to bear weight vertically and their fixed structural dimensions. Summary of the Invention
[0003] The purpose of this utility model patent is to provide a stackable pallet with bidirectional adjustable dimensions to solve the problem mentioned in the background art regarding the fixed size of traditional pallets and their inability to bear weight in the vertical direction.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0005] A stackable pallet with bidirectional size adjustment includes several size-adjustable base assemblies 1 and threaded telescopic vertical support assemblies 2. The several size-adjustable base assemblies 1 are arranged in a linear array in the vertical direction and are rigidly connected to each other by the threaded telescopic vertical support assemblies 2. The size-adjustable base assemblies 1 adjust the load-bearing width in the horizontal plane through a gear and rack transmission mechanism, and adjust the support height in the vertical direction through a threaded drive mechanism on the outside of the pallet.
[0006] The adjustable base assembly 1 includes a fixed-size base 11 for sliding the movable plate, a movable plate 12, a gear and rack transmission mechanism 13 and a gear shaft rotation locking mechanism 14 symmetrically distributed on both sides of the adjustable base assembly 1, and an axial locking mechanism 15 for the support cylinder of the locking thread telescopic vertical support assembly 2 distributed at the four corners of the adjustable base assembly 1.
[0007] The fixed-size base 11 has three dovetail sliding grooves 111, bearing mounting holes 112 of the gear and rack transmission mechanism 13 are symmetrically distributed on both sides, and mounting holes 113 of the threaded telescopic vertical support assembly 2 are distributed at the four corners.
[0008] The movable plate 12 is designed with a trapezoidal sliding guide rail 121 that can slide in the dovetail sliding groove 111.
[0009] The gear and rack transmission mechanism 13 includes a non-standard gear shaft 131, a cylindrical roller bearing 132 and a spur gear 133 mounted on the non-standard gear shaft 131, a rack 134 with a mounting hole that mates with the spur gear 133, a semi-circular key 135 located inside the spur gear 133 and mounted on the semi-circular keyway of the non-standard gear shaft 131, and a movable plate 12 fixed to the rack 134 by studs.
[0010] The non-standard gear shaft 131 is designed with a hexagonal stud head 1311, a circumferentially distributed toothed groove 1312, an axial shoulder 1313, a gear mounting surface 1314, and a semi-circular keyway 1315 opened on the gear mounting surface 1314, starting from a certain end face.
[0011] The gear shaft rotation locking mechanism 14 is disposed on the side of the circumferentially distributed toothed groove 1312 to control the rotation of the non-standard gear shaft 131. The gear shaft rotation locking mechanism 14 includes a first recessed internal thread mounting hole 142 opened on the side of the toothed groove 1312, and a tapered locking stud 141 installed in the first recessed internal thread mounting hole 142.
[0012] The threaded telescopic vertical support assembly 2 includes an external threaded support column 23, a reinforcing support seat 21, an extended support rod 22, and an internal threaded support cylinder 24, which are sequentially arranged on the external threaded support column 23.
[0013] The axial locking mechanism 15 of the support cylinder prevents the internal threaded support cylinder 24 from falling off the fixed-size base 11. It includes a second recessed internal threaded mounting hole 152 opened on the side of the external threaded support column 23, and a disc locking screw 151 passing through the internal threaded support cylinder 24 and installed in the second recessed internal threaded mounting hole 152.
[0014] The reinforced support base 21 and the external threaded support column 23 or the extended support rod 22 are fitted with a clearance.
[0015] The aforementioned stackable pallet with bidirectional size adjustment also includes embedded GPS, temperature sensor, humidity sensor and RFID-related digital and intelligent equipment, enabling logistics management and tracking.
[0016] In summary, this utility model patent includes at least one of the following beneficial technical effects:
[0017] Several adjustable base assemblies can be arranged in a vertical array and formed into a single unit via a threaded telescopic vertical support assembly. The forklift forks only need to engage the bottom fixed-size base to move multiple adjustable base assemblies along with the goods, significantly improving operational efficiency. Furthermore, the threaded telescopic vertical support assembly absorbs pressure from the upper bases and their contents, eliminating the risk of the currently loaded goods being crushed due to excessive pressure. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:
[0019] Figure 1 This is a structural schematic diagram of a preferred embodiment of a stackable tray with bidirectional size adjustment according to this utility model.
[0020] Figure 2 yes Figure 1 A schematic diagram of the structure of the medium-sized adjustable base assembly 1.
[0021] Figure 3 yes Figure 1 A schematic diagram of the structure of the fixed-size base 11.
[0022] Figure 4 yes Figure 1 A schematic diagram of the structure of the mobile plate 12.
[0023] Figure 5 yes Figure 1 A schematic diagram of the structure of the intermediate gear and rack transmission mechanism 13.
[0024] Figure 6 yes Figure 5 A schematic diagram of the structure of the non-standard gear shaft 131.
[0025] Figure 7 yes Figure 1 A schematic diagram of the structure of the gear shaft rotation locking mechanism 14.
[0026] Figure 8 yes Figure 1 A schematic diagram of the axial locking mechanism 15 of the middle support cylinder.
[0027] Figure 9 yes Figure 1A schematic diagram of the structure of the threaded telescopic vertical support assembly 2. Detailed Implementation
[0028] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0029] It should be noted that these figures are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.
[0030] like Figure 1 and Figure 2 As shown, this utility model discloses a bidirectional adjustable stackable tray, comprising: several adjustable base assemblies 1 and threaded telescopic vertical support assemblies 2. The adjustable base assemblies 1 are arranged in a linear array in the vertical direction and are rigidly connected to each other by the threaded telescopic vertical support assemblies 2. The adjustable base assemblies 1 can adjust the support width in the horizontal plane through a gear and rack transmission mechanism, and can adjust the support height in the vertical direction through a threaded drive mechanism. The adjustable base assemblies 1 include a fixed-size base 11 and a movable plate 12, which can move on the fixed-size base 11. Gear and rack transmission mechanisms 13 and gear shaft rotation locking mechanisms 14 are symmetrically distributed on both sides of the adjustable base assemblies 1, and axial locking mechanisms 15 for support cylinders are distributed at the four corners of the adjustable base assemblies 1.
[0031] like Figure 3 As shown, the fixed-size base 11 has three dovetail sliding grooves 111, bearing mounting holes 112 for the gear and rack transmission mechanism 13 are symmetrically distributed on both sides, and mounting holes 113 for the threaded telescopic vertical support assembly 2 are distributed at the four corners; Figure 4 As shown, the movable plate 12 is designed with a trapezoidal sliding guide rail 121 that can slide in the dovetail sliding groove 111; as Figure 5 As shown, the gear and rack transmission mechanism 13 includes a non-standard gear shaft 131, a cylindrical roller bearing 132 and a spur gear 133 mounted on the non-standard gear shaft 131, a rack 134 with a mounting hole that mates with the spur gear 133, and a semi-circular key 135 located inside the spur gear 133 and mounted on the semi-circular keyway of the non-standard gear shaft 131.
[0032] like Figure 6As shown, the non-standard gear shaft 131 is designed with a hexagonal stud head 1311, circumferentially distributed toothed grooves 1312, axial shoulder 1313, gear mounting surface 1314, and a semi-circular keyway 1315 on the gear mounting surface 1314, starting from a certain end face. The purpose of designing the hexagonal stud head 1311 is to facilitate the rotation of the non-standard gear shaft using a sleeve, thereby adjusting the position of the moving plate 12; the purpose of designing the circumferentially distributed toothed grooves 1312 is to provide slots for the gear shaft rotation locking mechanism 14.
[0033] like Figure 7 As shown, the gear shaft rotation locking mechanism 14 is designed with a tapered locking stud 141 and a recessed internal thread mounting hole 142, which can control the rotation of non-standard gear shafts. Figure 8 As shown, the axial locking mechanism 15 of the support cylinder includes a disc locking screw 151 and a recessed internal thread mounting hole 152, which can prevent the internal thread support cylinder 24 from falling off the fixed-size base 11.
[0034] like Figure 9 As shown, the threaded telescopic vertical support assembly 2 includes an external threaded support column 23, a reinforced support seat 21, an extended support rod 22, and an internal threaded support cylinder 24 sequentially arranged on the external threaded support column 23, which serve to bear weight in the vertical direction and provide adjustable support height.
[0035] In the adjustable base assembly 1, two movable plates 12 can move back and forth in the dovetail sliding groove 111, and four sets of threaded telescopic vertical support assemblies are installed on top.
[0036] By adopting the above technical solution, during use, first close the gear shaft rotation locking mechanism 14, and then use an M15 socket wrench to turn the non-standard gear shaft to adjust the dimensional parameters in the width direction. The maximum extension value of each moving plate 14 along the width direction is 300mm. Therefore, the dimensional adjustment range of the pallet in the width direction is 900mm-1500mm. In addition, the support height can be adjusted by using one wrench to hold the external threaded support column 23 and then using another wrench to turn the internal threaded support cylinder 24. The height adjustment limit of a set of threaded telescopic vertical support assembly 2 composed of external threaded support column 23 and internal threaded support cylinder 24 is 250mm. When the support height adjustment exceeds the limit value, an extended support rod can be further configured to solve the problem of vertical support height expansion.
[0037] In a preferred embodiment, this utility model can be further configured as follows: the gear and rack transmission mechanism 13 includes a non-standard gear shaft with toothed grooves and a hexagonal stud head. Two cylindrical roller bearings 132, a spur gear 133, and a semi-circular key 135 are sequentially mounted on the non-standard gear shaft. The rack 134 is fixed to the movable plate 12 by studs and positioned above the spur gear. A gear shaft rotation locking mechanism 14 is designed on the side of the non-standard gear shaft.
[0038] By adopting the above scheme, the width parameters of the pallet can be flexibly adjusted according to the actual volume of the goods. Turn the tapered locking stud 141 to the left to disengage it from the toothed groove 1312, then use a sleeve to rotate the non-standard gear shaft. The spur gear 133 on the non-standard gear shaft 131 will further drive the rack 134. The rack 134 is fixedly connected to the moving plate 12 via the stud, thus the moving plate 12 will also move back and forth. After the width adjustment is complete, turn the tapered locking stud 141 to the right to advance it forward until it is embedded in the circumferentially distributed toothed groove 1312 on the non-standard gear shaft. This locks the non-standard gear shaft, thus fixing the moving plate 12.
[0039] In a preferred embodiment, this utility model can be further configured as follows: the threaded telescopic vertical support assembly 2 includes an internally threaded support cylinder 24. The internally threaded support cylinder 24 has a tapered groove on its upper surface, and an axial locking mechanism for the support cylinder is located on the side of the tapered groove. The internally threaded support cylinder 24 is connected to an externally threaded support column 23 via an internal thread. The externally threaded support column 23 and the extended support rod 22 can also be connected via threads. The externally threaded support column 23 or the extended support rod 22 passes through the reinforced support seat 21 and is screwed into the fixed-size base 11 via a threaded connection. The reinforced support seat 21 and the externally threaded support column 23 or the extended support rod 22 are fitted with a clearance fit. Its function is to ensure the vertical connection rigidity of the threaded telescopic vertical support assembly 2, which effectively prevents tangential forces from damaging the threaded mounting holes distributed at the four corners of the fixed-size base.
[0040] By adopting the above technical solution, the threaded telescopic vertical support assembly 2 can bear weight in the vertical direction, effectively protecting goods from being crushed due to excessive stacking. The externally threaded support column 23 and the internally threaded support cylinder 24 are connected by threads, and their lengths can be changed directly by rotating them relative to each other, thus flexibly altering the distance between the two adjustable base assemblies 1 in the vertical direction. Furthermore, the axial locking mechanism of the support cylinder effectively prevents the internally threaded support cylinder 24 from detaching from the fixed-size base 11. The connection between the internally threaded support cylinder 24 and the fixed-size base 11 uses a clearance fit, so the internally threaded support cylinder can be disassembled simply by turning the locking screw outwards, greatly improving the assembly and disassembly efficiency of the adjustable pallet.
[0041] The implementation principle of this embodiment is as follows: In use, firstly, the extension distance of the movable plate 12 is adjusted according to the size of the container space, thereby making full use of the planar space. Then, goods are stacked on the first layer of adjustable pallets. When the load-bearing capacity of the goods approaches its limit, a threaded telescopic vertical support assembly can be installed on the current fixed-size base. Next, according to the current height of the goods, the appropriate support height is adjusted using a threaded rotary lifting adjustment mechanism and an extended support rod. Finally, the next adjustable pallet can be installed on the threaded telescopic vertical support assembly, and loading of goods can continue. This loading method can occupy as much available space in the container as possible, thereby increasing the carrying capacity.
[0042] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A stackable tray with bidirectional size adjustment, characterized in that, It includes several adjustable base assemblies (1) and threaded telescopic vertical support assemblies (2). The adjustable base assemblies (1) are arranged in a linear array in the vertical direction and are rigidly connected to each other by the threaded telescopic vertical support assemblies (2). The adjustable base assemblies (1) adjust the load width in the horizontal plane through a gear and rack transmission mechanism and adjust the support height in the vertical direction through a threaded drive mechanism outside the pallet. The adjustable base assembly (1) includes a fixed-size base (11) for sliding of the movable plate, a movable plate (12), a gear and rack transmission mechanism (13) and a gear shaft rotation locking mechanism (14) symmetrically distributed on both sides of the adjustable base assembly (1), and an axial locking mechanism (15) for the support cylinder of the locking thread telescopic vertical support assembly (2) distributed at the four corners of the adjustable base assembly (1).
2. The stackable tray with bidirectional size adjustment according to claim 1, characterized in that, The fixed-size base (11) has three dovetail sliding grooves (111), and bearing mounting holes (112) for the gear and rack transmission mechanism (13) are symmetrically distributed on both sides. Mounting holes (113) for the threaded telescopic vertical support assembly (2) are distributed at the four corners.
3. The stackable tray with bidirectional size adjustment according to claim 2, characterized in that, The movable plate (12) is designed with a trapezoidal sliding guide rail (121) that can slide in a dovetail sliding groove (111).
4. The stackable tray with bidirectional size adjustment according to claim 1, characterized in that, The gear and rack transmission mechanism (13) includes a non-standard gear shaft (131), a cylindrical roller bearing (132) and a spur gear (133) mounted on the non-standard gear shaft (131), a rack (134) with a mounting hole that mates with the spur gear (133), a semi-circular key (135) located inside the spur gear (133) and mounted on the semi-circular keyway of the non-standard gear shaft (131), and a movable plate 12 fixed to the rack (134) by studs.
5. The stackable tray with bidirectional size adjustment according to claim 4, characterized in that, The non-standard gear shaft (131) is designed with a hexagonal stud head (1311), a circumferentially distributed toothed groove (1312), an axial shoulder (1313), a gear mounting surface (1314), and a semi-circular keyway (1315) on the gear mounting surface (1314) starting from a certain end face.
6. The stackable tray with bidirectional size adjustment according to claim 5, characterized in that, The gear shaft rotation locking mechanism (14) is provided on the side of the circumferentially distributed toothed groove (1312) to control the rotation of the non-standard gear shaft (131). The gear shaft rotation locking mechanism (14) includes a first recessed internal thread mounting hole (142) opened on the side of the toothed groove (1312) and a tapered locking stud (141) installed in the first recessed internal thread mounting hole (142).
7. The stackable tray with bidirectional size adjustment according to claim 1, characterized in that, The threaded telescopic vertical support assembly (2) includes an external threaded support column (23), a reinforced support seat (21), an extended support rod (22), and an internal threaded support cylinder (24) arranged sequentially on the external threaded support column (23).
8. The stackable tray with bidirectional size adjustment according to claim 7, characterized in that, The axial locking mechanism (15) of the support cylinder prevents the internal threaded support cylinder (24) from falling off the fixed-size base (11), including a second recessed internal threaded mounting hole (152) opened on the side of the external threaded support column (23), and a disc locking screw (151) passing through the internal threaded support cylinder (24) and installed in the second recessed internal threaded mounting hole (152).
9. The stackable tray with bidirectional size adjustment according to claim 7, characterized in that, The reinforced support base (21) is fitted with the external threaded support column (23) or the extended support rod (22) with clearance.
10. The stackable tray with bidirectional size adjustment according to claim 1, characterized in that, It includes embedded GPS, temperature sensors, humidity sensors, and RFID-related digital and intelligent equipment, enabling logistics management and tracking.