A three-tiered palletized wheel set sea packaging rack

Abstract

This invention relates to the field of wheelset packaging, specifically to a three-layer stacking wheelset shipping packaging rack, comprising an upper frame, a middle frame, and a lower frame with a frame structure. The lower frame has a working section at its lower part for forklift lateral and longitudinal forklift operations, and a pair of longitudinal steel plates A are fixed to its top. The middle frame has the same structure as the upper frame, with a pair of longitudinal steel plates B fixed to its lower end and a pair of longitudinal steel plates C fixed to its upper end. The outer sides of the upper surfaces of both longitudinal steel plates A and C have three sets of positioning components spaced longitudinally for limiting the wheelset axle. Each positioning component has a pair of through holes for engaging with U-bolts fastened to the axle and at least one pair of threaded holes. The longitudinal steel plate B has bolt holes corresponding to the threaded holes for inserting long bolts. This packaging rack can hold nine wheelsets, helping to increase container loading capacity and reduce shipping costs.

Description

Technical Field

[0001] This invention relates to the field of wheelset packaging, specifically to a three-layer stacking wheelset marine packaging rack. Background Technology

[0002] When wheelsets are sold overseas, they are typically transported in containers. Due to container size limitations, a 20-foot container measures 5898×2352×2385mm (length×width×height), while a typical truck wheelset has a wheel diameter of φ840mm and an axle length exceeding 2500mm. A single wheel has a diameter of 840mm, and three wheels placed side-by-side would exceed 2500mm in length, and the same applies vertically. Wheelsets are generally packaged in a staggered manner, but forklift loading convenience must be considered, limiting stacking to two layers vertically. Conventional packaging allows only six sets per group, resulting in a container holding only 12 sets (two groups), leading to significant shortages. A three-layer design would exceed the height limit, preventing loading into the container. Eliminating forklift access to meet the height requirement necessitates the use of top-opening special containers for hoisting the wheelsets, drastically increasing costs. Therefore, maximizing container space to transport as much cargo as possible while reducing ocean freight costs has become increasingly urgent.

[0003] The invention patent application CN2012103203051 discloses a wheelset packaging device, in which the wheelsets are arranged in a staggered manner. However, it is clear that the gaps between the staggered wheelsets are not effectively utilized. Although this packaging scheme can increase the loading capacity, the lower part of the wheelsets is basically flush with the ground, making it impossible to use forklifts for forklift transfer and loading. The patent specification also points out that it needs to be hoisted into a container. This type of container is not an ordinary container, but a top-opening special container, which is more expensive. Furthermore, the stress points of the stacking between the layers of packaging are the journals at both ends, and the journals are the assembly surfaces, which poses a risk of scrapping.

[0004] The invention patent with application number CN2009102627971 discloses a single-layer packaging and transportation device for train wheelsets. This device can only be used for wheels with a diameter of less than 840mm. Each packaging rack can only carry 3 sets of wheelsets. The stacking method is used, and no more than 12 sets can be transported in a container.

[0005] The utility model application with application number CN2014206896884 discloses a multi-wheel pair transport packaging rack, which also adopts a single layer of wheels pairs horizontally staggered and stacked in two layers, but the loading capacity is obviously insufficient, with only 6 sets per rack and only 12 sets per container.

[0006] Therefore, a new packaging solution is needed to ship as many wheels as possible while also leaving enough space for forklift handling and packing. Summary of the Invention

[0007] The purpose of this invention is to provide a three-layer stacking wheelset shipping rack that can hold nine sets of wheelsets, which helps to increase container loading capacity and reduce shipping costs.

[0008] The technical solution of the present invention is as follows: a three-layer stacking wheelset marine packaging rack, comprising an upper frame, a middle frame, and a lower frame with a frame structure; the lower part of the lower frame is provided with a working part for forklift lateral and longitudinal forklift operations, and a pair of longitudinal steel plates A are fixed to the top of the lower frame; the middle frame has the same structure as the upper frame, a pair of longitudinal steel plates B are fixed to the lower end of the middle frame, and a pair of longitudinal steel plates C are fixed to the upper end of the middle frame; the outer side of the upper surface of the longitudinal steel plates A and C are provided with three sets of positioning components for limiting the wheelset axle body along the longitudinal direction, and a pair of through holes for cooperating with U-bolts fastened to the axle body and at least a pair of threaded holes are provided next to the positioning components; the longitudinal steel plate B is provided with bolt holes corresponding to the threaded holes for passing through long screws.

[0009] Furthermore, the lower frame includes three pairs of support legs spaced longitudinally and arranged left and right. A long crossbeam A is fixed between the lower parts of each pair of support legs. A short longitudinal beam at the same height as the long crossbeam A is fixed between the lower parts of two adjacent support legs. The long crossbeam A and the short longitudinal beam constitute the working part. The upper ends of the three support legs on the same side are fixedly connected to the longitudinal steel plate A.

[0010] Furthermore, a support base plate is fixed at the lower end of each support leg, and both ends of the support base plate are tilted upward at a certain angle. The distance between the long crossbeam A and the short longitudinal beam and the base plate is 105~115mm.

[0011] Furthermore, a long crossbeam B is fixed between the upper parts of the two pairs of support legs located in the longitudinal direction.

[0012] Furthermore, both the middle frame and the upper frame include three pairs of support rods spaced longitudinally and arranged left and right. A long crossbeam C is fixed between each pair of support rods. The lower ends of the three support rods on the same side are fixedly connected to the longitudinal steel plate B, and the upper ends of the three support rods on the same side are fixedly connected to the longitudinal steel plate C.

[0013] Furthermore, each positioning component is positioned above the location of each support leg and support rod. Each positioning component consists of two angle steel pieces with their arc openings facing downwards. The two angle steel pieces are arranged back and forth in the longitudinal direction and welded and fixed to the outer side of the upper surface of the longitudinal steel plate A / longitudinal steel plate C to form a V-shaped groove.

[0014] Furthermore, the longitudinal steel plate B is provided with clearance grooves below each support rod to allow space for the U-bolts in the arched portion.

[0015] Furthermore, on the upper surface of the longitudinal steel plate A and the longitudinal steel plate C, and on the side of each group of positioning components, two pairs of threaded holes are provided at a transverse interval. Each pair of threaded holes is arranged back and forth in the longitudinal direction, and each pair of through holes is provided between the two pairs of threaded holes.

[0016] Furthermore, the bolt hole is located on the side of the fixed connection position between the longitudinal steel plate B and the lower end of the support rod.

[0017] Furthermore, the upper frame, middle frame, and lower frame are all frame structures welded from rectangular tubes and channel steel; the distance between two adjacent sets of positioning components of the longitudinal steel plate A and the longitudinal steel plate C is less than the wheel diameter of the wheelset.

[0018] Compared with the prior art, the present invention has the following advantages: 1. The packaging rack has a three-layer integrated frame structure, which is stable, strong and lightweight. It adopts a three-layer stacking method, and the layers are connected by bolts, making unpacking and assembly convenient.

[0019] 2. Packaging racks not only provide loading capacity but also allow for forklifts to be used for transfer and packing. One set of packaging racks can carry 9 sets of wheelsets, and one container can carry 2 sets (18 sets), increasing the loading capacity by 50% and greatly reducing ocean freight costs.

[0020] 3. The bottom of the packaging rack has space for forklifts to move the goods, and the side is designed with crossbeams and channel steel to improve the overall strength and facilitate forklift transfer from the side within the factory.

[0021] 4. Leave space at the bottom of the packaging rack for forklift operations, further reduce the overall height of the wheelset, and maximize the axial clearance as much as possible without exceeding the width limit so that the three layers can be staggered in the vertical direction to reduce the height to the maximum extent. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the wheelset structure mounted on the three-layer stacked wheelset ocean shipping packaging rack of the present invention.

[0023] Figure 2 This is a three-dimensional schematic diagram of the three-layer stacked wheelset ocean packaging rack of the present invention after stacking.

[0024] Figure 3 This is a side view of the three-layer stacked wheelset ocean packaging rack of the present invention after stacking.

[0025] Figure 4 This is a front view of the three-layer stacked wheelset ocean packaging rack of the present invention after stacking.

[0026] Figure 5 This is a schematic diagram of the rack removal structure of the present invention.

[0027] Figure 6 For the present invention Figure 5 Enlarged view of area A.

[0028] Figure 7 This is a schematic diagram of the mid-frame structure of the present invention.

[0029] Figure 8 For the present invention Figure 7 Enlarged view of area B.

[0030] Figure 9 This is a schematic diagram of the structure of the present invention, in which the wheelset is placed on the lower frame and secured with U-bolts.

[0031] Figure 10 This is a schematic diagram of the structure of the present invention, in which the middle frame is installed on the lower frame.

[0032] Figure 11 For the present invention Figure 10 Enlarged view of area C.

[0033] In the diagram: 1-Lower frame; 11-Support leg; 12-Long crossbeam A; 13-Short longitudinal beam; 14-Longitudinal steel plate A; 15-Support base plate; 16-Long crossbeam B; 17-Through hole; 18-Threaded hole A; 2-Middle frame; 21-Support rod; 22-Long crossbeam C; 23-Reinforcing rib plate; 24-Longitudinal steel plate B; 25-Longitudinal steel plate C; 26-Through hole; 27-Threaded hole B; 28-Bolt hole; 29-Allowing groove; 3-Upper frame; 4-Wheelset; 41-Shaft body; 42-Junior journal; 5-U-bolt; 6-Long threaded rod; 7-Angle steel piece; 8-Nut. Detailed Implementation

[0034] To make the above features and advantages of the present invention more readily understood, specific embodiments are described below in conjunction with the accompanying drawings, but the present invention is not limited thereto.

[0035] refer to Figures 1 to 11 A three-layer stacking wheelset marine packaging rack includes an upper rack 3, a middle rack 2, and a lower rack 1. The upper rack 3, middle rack 2, and lower rack 1 are used for stacking from bottom to top, and all are frame structures welded from rectangular tubes and channel steel.

[0036] The aforementioned lower frame 1 includes three pairs of longitudinally spaced support legs 11, with each pair of support legs 11 arranged on the left and right. A support base plate 15 is fixed to the lower end of each support leg 11. Both ends of the support base plate 15 are angled upwards to prevent the base plate 15 from scraping against the container floor and causing damage when the entire stack of wheelsets is loaded into the container. A long crossbeam A12 is fixed between the lower parts of each pair of support legs 11, and a short longitudinal beam 13 at the same height as the long crossbeam A12 is fixed between the lower parts of two adjacent longitudinally spaced support legs 11. The long crossbeam A12 and the short longitudinal beam 13 constitute the working parts (lifting and supporting parts) for forklift lateral and longitudinal forklift operations, respectively. The distance between the long crossbeam A12 and the short longitudinal beam 13 and the base plate 15 is 105~115mm, specifically 110mm. The distance between the long crossbeam A12 and the short longitudinal beam 13 and the base plate allows for forklift operations in either the lateral or longitudinal direction by any forklift.

[0037] A long crossbeam B16 is fixed between the upper parts of the first and last pairs of support legs 11 in the longitudinal direction, thereby enhancing the strength of the lower frame 1. A longitudinal steel plate A14 is fixed to the upper end of each of the three support legs 11 on the same side, meaning a pair of longitudinal steel plates A14 are fixed to the top of the lower frame 1. Three sets of positioning components are spaced longitudinally on the outer side of the upper surface of each longitudinal steel plate A14 to limit the movement of the axle 41 of the wheelset 4. The distance between two adjacent sets of positioning components is less than the wheel diameter of the wheelset but greater than the wheel radius. A pair of through holes 17 and two pairs of threaded holes A18 are provided beside each positioning component for engaging with U-bolts 5 fastened to the axle 41. Each pair of threaded holes A18 is arranged longitudinally, and each pair of through holes 17 is located between two pairs of threaded holes A18.

[0038] The aforementioned intermediate frame 2 includes three pairs of longitudinally spaced support rods 21, with each pair of support rods 21 arranged on the left and right. A long crossbeam C22 is fixed between each pair of support rods 21. Both ends of the long crossbeam C22 between the first and last pairs of support rods 21 in the longitudinal direction are welded with reinforcing ribs 23 welded to the support rods 21, thereby improving the strength of the intermediate frame 2 and the upper frame 3. The lower ends of the three support rods 21 on the same side are all fixedly connected to longitudinal steel plates B24, and the upper ends of the three support rods 21 on the same side are all fixedly connected to longitudinal steel plates C25. That is, the lower end of the intermediate frame 2 is fixed with a pair of longitudinal steel plates B24, and the upper end of the intermediate frame is fixed with a pair of longitudinal steel plates C25.

[0039] Three sets of positioning components are longitudinally spaced along the outer side of the upper surface of the aforementioned longitudinal steel plate C25 to limit the axle 41 of the wheelset 4. The distance between two adjacent sets of positioning components is less than the wheel diameter of the wheelset but greater than the wheel radius. A pair of through holes 26 and two pairs of threaded holes B27 are provided beside each positioning component for engaging with U-bolts fastened to the axle. Each pair of threaded holes A27 is arranged longitudinally, and each pair of through holes 26 is located between two pairs of threaded holes B27. The positioning components, through holes 26, and threaded holes B27 on the longitudinal steel plate C25 correspond to the positioning components, through holes 17, and threaded holes A18 on the longitudinal steel plate A14.

[0040] The aforementioned longitudinal steel plate B24 is provided with bolt holes 28 corresponding to threaded holes A18 and used for threading long screws 6, so that the long screws can pass through bolt holes 28 and be screwed into the corresponding threaded holes A18, thereby achieving the connection and locking of the middle frame 2 and the lower frame 1 through the long bolts 6.

[0041] The dimensions and structure of the aforementioned middle frame 2 and upper frame 3 are completely identical.

[0042] In this embodiment, each positioning assembly is positioned above each support leg 11 and support rod 21 to better support the wheelset 4. Each positioning assembly consists of two downward-facing angle steel pieces 7. The two angle steel pieces 7 are arranged longitudinally and welded to the outer side of the upper surface of the longitudinal steel plate A14 / C25 to form a V-shaped groove, thereby limiting the axle 41 of the wheelset 4 in the V-shaped groove and preventing the wheelset 4 from rolling off. The purpose of fixing the angle steel pieces 7 to the outer side is to prevent interference with the U-bolt 5 and the long screw 6.

[0043] In this embodiment, the longitudinal steel plate B24 is provided with a relief groove 29 below the position of each support rod 21 to allow the arched part of the U-bolt 5 to pass, so that the bottom surface of the longitudinal steel plate B24 can be directly supported on the shaft body 41.

[0044] In this embodiment, the length, width, and height (excluding the height of the angle steel pieces) of the lower frame 1, middle frame 2, and upper frame 3 are all the same; for example, the length is 1640mm, the width is 1200mm, and the height is 480mm. The length, width, and thickness of the longitudinal steel plates A14, B24, and C25 are all the same; for example, the length is 1640mm, the width is 100mm, and the thickness is 10mm. The thickness of the supporting base plate 1 is also 10mm. The center distance between the two angle steel pieces 7 in each positioning assembly is, for example, 170mm; the length of the clearance groove 29 is, for example, 170mm, and the width is, for example, 16mm.

[0045] The bolt hole 28 is located on the side of the fixed connection position between the longitudinal steel plate B24 and the lower end of the support rod 21.

[0046] In use, place the lower frame 3 on the ground, and insert the axle bodies 41 of the three sets of wheelsets 4 into the V-shaped slots formed by the two angle steel pieces 7 on the upper surface of the longitudinal steel plate A14 of the lower frame 1, and stagger the wheelsets 4 axially. Then, fasten U-bolts 5 at the left and right axle bodies 41 of the wheelsets 4, with both ends of the U-bolts 5 passing through the through holes 17 on the longitudinal steel plate A14 and tightened with nuts 8. After tightening, place the middle frame 2 on the axle bodies 41 of the wheelsets 4 loaded on the lower frame 1, aligning the bolt holes 28 on the longitudinal steel plate B24 of the middle frame 2 with the threaded holes A18 on the longitudinal steel plate A11 of the lower frame 1, insert 12 sets of long screws 6 and tighten them to form an integral structure between the lower frame 1 and the middle frame 2, improving stability. Similarly, place the three sets of wheelsets 4 into the V-shaped slots formed by the two angle steel pieces 7 on the upper surface of the longitudinal steel plate C25 of the middle frame 2, and then fasten the U-bolts 5 at the positions of the left and right axle bodies 41 of the wheelsets 4. The two ends of the U-bolts 5 pass through the through holes 26 on the longitudinal steel plate C25 and are tightened with nuts 8. Similarly, place them into the upper frame 3 and repeat the above operations. In this way, the nine sets of wheelsets 4, the upper frame 3, the middle frame 2, and the lower frame 1 form a set of packaging rack components. The length of the packaging rack components is 2240mm and the height is less than or equal to 2265mm, forming a stable package that can be transported by forklifts and loaded into containers.

[0047] When the two sets of packaging rack assemblies are loaded into the container, the axial direction of the wheelset is parallel to the length direction of the container. The two sets of packaging rack assemblies are staggered in the width direction of the container so that the journals 42 are misaligned and have a concave-convex fit, so that two sets of packaging rack assemblies, a total of 18 sets of wheelsets 4, can be installed in one container.

[0048] The above description is only a preferred embodiment of the present invention. For those skilled in the art, designing different forms of a three-layer stacking wheelset shipping packaging rack according to the teachings of the present invention does not require creative labor. All equivalent changes, modifications, substitutions and variations made in accordance with the scope of the patent application of the present invention without departing from the principles and spirit of the present invention shall be covered by the present invention.

Claims

1. A three-layer stacking wheelset shipping packaging rack, characterized in that, The system includes an upper frame, a middle frame, and a lower frame with a frame structure. The lower frame has a working section at its lower part for forklift lateral and longitudinal forking operations, and a pair of longitudinal steel plates A are fixed to the top of the lower frame. The middle frame has the same structure as the upper frame. A pair of longitudinal steel plates B are fixed to the lower end of the middle frame, and a pair of longitudinal steel plates C are fixed to the upper end of the middle frame. The outer side of the upper surface of the longitudinal steel plates A and C are each provided with three sets of positioning components for limiting the wheel axle body along the longitudinal direction. A pair of through holes for cooperating with U-bolts that are buckled onto the axle body and at least a pair of threaded holes are provided next to the positioning components. The longitudinal steel plate B is provided with bolt holes corresponding to the threaded holes for passing through long screws.

2. The three-layer palletizing wheelset marine packaging rack according to claim 1, characterized in that, The lower frame includes three pairs of support legs spaced longitudinally and arranged on the left and right. A long crossbeam A is fixed between the lower parts of each pair of support legs. A short longitudinal beam at the same height as the long crossbeam A is fixed between the lower parts of two adjacent support legs. The long crossbeam A and the short longitudinal beam constitute the working part. The upper ends of the three support legs on the same side are fixedly connected to the longitudinal steel plate A.

3. A three-layer palletizing wheelset marine packaging rack according to claim 2, characterized in that, A support base plate is fixed at the lower end of each support leg. Both ends of the support base plate are tilted upward at a certain angle. The distance between the long crossbeam A and the short longitudinal beam and the base plate is 105~115mm.

4. A three-layer palletizing wheelset marine packaging rack according to claim 2 or 3, characterized in that, A long crossbeam B is fixed between the upper parts of the two pairs of support legs located in the longitudinal direction.

5. A three-layer palletizing wheelset marine packaging rack according to claim 2 or 3, characterized in that, Both the middle frame and the upper frame include three pairs of support rods spaced longitudinally and arranged on the left and right. A long crossbeam C is fixed between each pair of support rods. The lower ends of the three support rods on the same side are fixedly connected to the longitudinal steel plate B, and the upper ends of the three support rods on the same side are fixedly connected to the longitudinal steel plate C.

6. A three-layer palletizing wheelset marine packaging rack according to claim 5, characterized in that, Each positioning component is located above each support leg and support rod. Each positioning component consists of two angle steel pieces with their arc openings facing downwards. The two angle steel pieces are arranged back and forth in the longitudinal direction and welded and fixed to the outer side of the upper surface of the longitudinal steel plate A / longitudinal steel plate C to form a V-shaped groove.

7. A three-layer palletizing wheelset marine packaging rack according to claim 5, characterized in that, The longitudinal steel plate B has clearance grooves below each support rod to allow space for the U-bolts in the arched section.

8. A three-layer palletizing wheelset marine packaging rack according to claim 1, 6, or 7, characterized in that, The upper surfaces of the longitudinal steel plates A and C, and located beside each group of positioning components, are provided with two pairs of threaded holes spaced laterally. Each pair of threaded holes is arranged back and forth in the longitudinal direction, and each pair of through holes is located between the two pairs of threaded holes.

9. A three-layer palletizing wheelset marine packaging rack according to claim 5, characterized in that, The bolt holes are located on the side of the fixed connection position between the longitudinal steel plate B and the lower end of the support rod.

10. A three-layer palletizing wheelset marine packaging rack according to claim 1, characterized in that, The upper frame, middle frame, and lower frame are all frame structures welded from rectangular tubes and channel steel; the distance between two adjacent sets of positioning components of the longitudinal steel plate A and longitudinal steel plate C is less than the wheel diameter of the wheelset.

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