A micro-adjustable telescopic material rack

By employing removable pads and fasteners in the telescopic rack, the problem of the rack's difficulty in fine-tuning is solved, enabling precise fixing and stable transportation of batteries, thus improving the safety and transportation efficiency of the battery pack.

CN224278030UActive Publication Date: 2026-05-26FU JIAN XIAN CHEN ZHI XIANG KE JI GU FEN YOU XIAN GONG SI
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FU JIAN XIAN CHEN ZHI XIANG KE JI GU FEN YOU XIAN GONG SI
Filing Date
2025-08-04
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing telescopic racks are difficult to adjust precisely and cannot accommodate battery size errors, resulting in unstable battery placement, increased safety hazards, and easy shaking and displacement during transportation.

Method used

The design incorporates detachable gaskets and fasteners. By setting multiple pairs of fixing holes and positioning holes at the connection points of the main body of the material rack, combined with the telescopic inner and outer tube structure, the material rack can be finely adjusted and stably fixed.

Benefits of technology

It enables precise fine-tuning of batteries of different sizes, improves the stability of battery placement and the fixation effect during transportation, and reduces safety hazards.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224278030U_ABST
    Figure CN224278030U_ABST
Patent Text Reader

Abstract

This utility model relates to the field of battery racks and provides a micro-adjustable telescopic battery rack, including a rack body, a first rack, and at least one second rack telescopically mounted on the first rack. The first rack and the second rack are telescopically connected by at least one first connecting part, which includes an outer tube and an inner tube. The outer tube can be fitted onto the inner tube, and the inner tube has a fixing hole. The outer tube has at least one pair of first elongated holes and second elongated holes. At least two first gaskets are detachably mounted in the at least one first elongated hole. The positions of the first positioning holes on the at least two first gaskets are different. Each first gasket has at least one first positioning hole. A fixing member passes through the fixing hole and the first positioning hole, and the fixing member can pass through the first rack and the second rack for fixation. By selecting different first gaskets, micro-adjustment can be achieved, making it suitable for battery packs of different sizes and solving the technical problem of the difficulty in achieving micro-adjustment of telescopic battery racks.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of material racks, and in particular to a micro-adjustable telescopic material rack. Background Technology

[0002] In the rapid development of the new energy industry, telescopic racks are key load-bearing tools for the production, storage and transportation of new energy batteries. Their performance has a significant impact on battery safety and production efficiency, and the market is increasingly demanding greater flexibility in rack adjustments.

[0003] Currently, most telescopic battery racks, especially those used for new energy batteries, employ adjustable mounting holes. However, this method has significant limitations: Firstly, setting the spacing of the mounting holes presents a dilemma. A large spacing restricts the adjustment range, making it difficult to accommodate batteries of different specifications or those with slight dimensional differences within the same batch. A small spacing, while allowing for more precise adjustment, reduces the rack's load-bearing capacity and increases the risk of deformation and damage. Secondly, batteries within the same batch may exhibit dimensional variations, which traditional racks cannot precisely adjust. This can lead to loose, tilted, or improperly fitted batteries, affecting stability and potentially causing battery damage, short circuits, and other safety hazards.

[0004] Furthermore, vibration is unavoidable during transportation. Traditional telescopic racks, due to their limited adjustment capabilities, cannot provide a tight and stable fixation for the batteries, allowing them to easily shake and shift, leading to loose connections, affecting battery pack performance, and even causing safety accidents. Therefore, it is essential to develop telescopic racks that can be precisely adjusted, adapt to battery size errors, and ensure stable transportation. Utility Model Content

[0005] Therefore, to address the aforementioned problems, this utility model proposes a finely adjustable telescopic material rack. It solves the technical problem that makes fine-tuning of telescopic material racks difficult.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An adjustable telescopic rack includes a rack body, comprising a first rack and at least one second rack telescopically mounted on the first rack. The first rack and the second rack are telescopically connected by at least one first connecting part. The first connecting part includes an outer tube and an inner tube. The outer tube can be sleeved on the inner tube. The inner tube has a fixing hole. The outer tube has at least one pair of first elongated holes and second elongated holes. At least two first gaskets are detachably disposed in at least one of the first elongated holes. The positions of the first positioning holes on the at least two first gaskets are different. Each first gasket has at least one first positioning hole. The two ends of the first gasket located in the telescopic direction of the second rack abut against the ends of the first elongated holes. A fixing member passes through the fixing hole and the first positioning hole. The fixing member can pass through the first rack and the second rack for fixation.

[0008] Further:

[0009] At least one second elongated hole is detachably provided with at least two second gaskets, the two ends of the second gasket located in the telescopic direction of the second material rack abut against the end of the second elongated hole, the second gasket has at least one second positioning hole, the positions of the second positioning holes on the at least two second gaskets are different, the position of the second positioning hole corresponds to the position of the first positioning hole, and the fastener can pass through the first positioning hole and the second fixing hole.

[0010] The inner tube has multiple pairs of fixing holes, the outer tube has at least two pairs of first elongated holes and second elongated holes, and each of the first gaskets has a first positioning hole.

[0011] The outer tube is located on the first material rack and the inner tube is located on the second material rack, or the outer tube is located on the second material rack and the inner tube is located on the first material rack.

[0012] The second material rack is located at one or both ends of the first material rack.

[0013] The outer tube is mounted on the second material rack, and the inner tube is slidably inserted into or sleeved on the first material rack. The first material rack is provided with a locking hole, and the first material rack and the inner tube are fixed by a locking member. The locking member can pass through the fixing hole and the locking hole for fixing.

[0014] The fasteners are bolts and nuts.

[0015] The second material rack includes at least one third material rack and at least one fourth material rack, wherein the third material rack and the fourth material rack are retractably connected by at least one second connecting part; the first material rack includes a fifth material rack retractably connected to the third material rack and a sixth material rack retractably connected to the fourth material rack, wherein the fifth material rack and the sixth material rack are retractably connected by at least one third connecting part.

[0016] The third material rack is located at two or four corners of the main body of the material rack, and the fourth material rack is connected between the corresponding two third material racks.

[0017] The first connecting part and the second connecting part have the same structure, and the first connecting part has the same structure as the third connecting part.

[0018] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0019] When adjusting the length of the main body of the material rack in this utility model, fine adjustments can be made between the first material rack and the second material rack. After the position is adjusted, a corresponding first shim is selected according to the position of the fixing hole. The first positioning hole of the first shim corresponds to the fixing hole. The fixing member passes through the first positioning hole and the fixing hole for fixation, realizing fine adjustment. It can be applied to battery packs of different sizes, especially to the errors generated by battery packs in the same batch. At the same time, the first shim not only strengthens the strength of the outer tube, but also provides support for the inner tube, and has a good anti-tilting effect. Furthermore, the second shim is set correspondingly to the first shim, which can improve the strength at the first and second elongated holes and improve the fixing effect. Furthermore, there are multiple pairs of first and second elongated holes between the first and second elongated holes. The system improves the fixing and support effect; furthermore, the second material rack is located at one or both ends, facilitating fine-tuning by workers; furthermore, the inner tube can slide on the first material rack, allowing for equidistant adjustment between the first material rack and the inner tube, and fine-tuning between the second material rack and the inner tube, thus improving the adjustment effect; furthermore, the second material rack includes a telescopically connected third and fourth material rack, and the first material rack, after being peeled off, is telescopically connected to a fifth and sixth material rack, allowing the material rack body to be adjusted in both length and width directions; furthermore, the third material rack is located at two or four corners of the material rack body, improving the overall symmetry of the material rack body; furthermore, the first connecting part, the second connecting part, and the third connecting part have the same structure, allowing for fine-tuning of the material rack body in both length and width directions. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of the telescopic material rack of this utility model.

[0021] Figure 2 This is a structural diagram of the telescopic material rack from another angle.

[0022] Figure 3 This is a structural schematic diagram of the first connecting part.

[0023] Figure 4 yes Figure 3 A partial exploded view.

[0024] Figure 5 This is a structural schematic diagram of the first connecting part from another angle.

[0025] Figure 6 yes Figure 5 A partial exploded view.

[0026] Figure 7 This is a top view of the first connecting part, the first gasket, and the second gasket.

[0027] Figure 8 yes Figure 7 A schematic diagram of the structure for replacing the first gasket and the second gasket on the first connecting part.

[0028] Figure 9 This is a schematic diagram showing that the first and second gaskets have a rhomboid structure.

[0029] Figure 10 This is a partial sectional view of the first connecting part.

[0030] Figure 11 This is a structural diagram of the telescopic material rack connecting rod.

[0031] Figure label:

[0032] 1. First material rack; 11. Fifth material rack; 12. Sixth material rack; 120. Slide rail; 13. Connecting rod; 130. Rotating shaft; 2. Second material rack; 21. Third material rack; 22. Fourth material rack; 3. First connecting part; 31. Outer tube; 311. First elongated hole; 312. Second elongated hole; 32. Inner tube; 320. Fixing hole; 33. First gasket; 330. First positioning hole; 34. Fixing component; 341. Bolt; 342. Nut; 35. Second gasket; 350. Second positioning hole; 4. Locking component; 40. Locking hole; 5. Second connecting part; 6. Third connecting part. Detailed Implementation

[0033] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0034] refer to Figures 1 to 11 This embodiment provides a finely adjustable telescopic material rack, including a material rack body, which includes a first material rack 1 and two second material racks 2 telescopically disposed on the first material rack 1. The first material rack 1 and the second material rack 2 are telescopically connected by a first connecting part 3. The first connecting part 3 includes an outer tube 31 and an inner tube 32. The outer tube 31 can be sleeved on the inner tube 32. The inner tube 32 is provided with multiple pairs of fixing holes 320. The outer tube 31 is provided with two pairs of first elongated holes 311 and second elongated holes 312. Multiple first gaskets 33 are detachably disposed in the first elongated holes 311. The positions of the first positioning holes 330 on the multiple first gaskets 33 are different. Each first gasket 33 is provided with a first positioning hole 330. The two ends of the first gasket 33 located in the telescopic direction of the second material rack 2 abut against the ends of the first elongated holes 311. A fixing member 34 passes through the fixing holes 320 and the first positioning holes 330. The fixing member 34 can pass through the first material rack 1 and the second material rack 2 for fixing.

[0035] The number of the aforementioned second material racks 2 can be one, two, three or even more. The shapes and structures of different second material racks 2 can be the same, symmetrical, or different, depending on the specific situation.

[0036] The inner tube 32 can be either a hollow tube or a solid rod. When the inner tube 32 is a tube, the fixing holes 320 are paired, and the fixing member 34 can pass through the two corresponding fixing holes 320. When the inner tube 32 is a solid rod, the fixing holes 320 penetrate the inner tube 32, and the fixing member 34 can pass through one fixing hole 320. The cross-section of the inner tube 32 can be circular, square, elliptical, triangular, polygonal, or other shaped structures.

[0037] The first gasket 33 is usually configured to fully fit against the inner tube 32, which provides the best fixing effect; the first gasket 33 can also be configured not to fully fit against the inner tube 32; the first gasket 33 can also be configured not to abut against the inner tube 32, and the first gasket 33 is stuck on the first elongated hole 311, which provides a relatively poor fixing effect.

[0038] The aforementioned second material rack 2 is usually set in two, located at the front and rear ends or left and right ends of the material rack body respectively. This structure can achieve symmetry and improve the overall force balance of the material rack body.

[0039] The aforementioned second material rack 2 can also be a single unit, located only at one end of the main body of the material rack, allowing for fine-tuning from one end. This structure has low production costs, but poor symmetry, which may lead to uneven stress distribution.

[0040] The aforementioned second material rack 2 can also be located at the front or rear end, and the other at the left or right side. In this type of structure, a telescopic material rack is usually required between the second material racks 2.

[0041] The number of the first material rack 1 mentioned above can also be two or even more, depending on the specific situation.

[0042] The two ends of the first gasket 33 located in the telescopic direction of the second material rack 2 abut against the end of the first elongated hole 311. The two ends mentioned above usually refer to the two ends of the first gasket 33 that bear force, and are not limited to the front end and the back end in terms of structure. The structural design of the first gasket 33 may make its two ends that bear force not its front end and the back end, such as a double-layer first gasket 33, where the bottom layer of the first gasket 33 is located inside the first elongated hole 311 and the top layer of the first gasket 33 abuts against the outer wall of the outer tube 31. Therefore, the structure of the first gasket 33 can also be such that part of it is located inside the first elongated hole 311 and part of it is located outside the first elongated hole 311, all of which are within the protection scope of this application.

[0043] This application primarily protects the structure that uses different first gaskets 33 to achieve fine-tuning between the outer tube 31 and the inner tube 32; the aforementioned first material rack 1 and second material rack 2 can also adopt other structures and arrangements, and the entire material rack body can adopt various telescopic structures, that is, some adopt fine-tuning telescopic structures, and some adopt traditional telescopic structures. No matter how the structure inside the material rack body changes, as long as there is one, two or more places where the structure of the outer tube 31, inner tube 32 and first gasket 33 is used to achieve fine-tuning, it is within the scope of protection of this application.

[0044] Each first connecting part 3 may also adopt different structures, such as different numbers of first elongated holes 311, second elongated holes 312, and first gaskets 33; for example, the outer tube 31 of some first connecting parts 3 is set on the first material rack 1, and the outer tube 31 of other first connecting parts 3 is set on the second material rack 2; for example, the first elongated holes 311 of some first connecting parts 3 are set on the top surface, and the first elongated holes 311 of some first connecting parts 3 are set on the side surface, etc.

[0045] Figure 1 A first gasket 33 is installed in one part of the first elongated holes 311, while a first gasket 33 is not installed in another part of the first elongated holes 311. Therefore, whether the first gasket 33 is installed in all the first elongated holes 311, or in some of the first elongated holes 311, or in only one of the first elongated holes 311, depends on the specific situation.

[0046] The first elongated hole 311 and the second elongated hole 312 mentioned above are usually set on the left and right sides or the top and bottom sides, or they can be set at an angle, depending on the specific situation.

[0047] The number of the aforementioned fixing holes 320 is usually multiple pairs, and they are usually arranged at equal intervals. The aforementioned fixing holes 320 can also be one or two pairs, depending on the specific situation.

[0048] The first elongated hole 311 and the second elongated hole 312 mentioned above can be one pair, two pairs, three pairs or even more. Usually, they are set to two or three pairs, which not only have a good fixing effect, but also have short length, light weight, and are easy to disassemble and install, and are convenient for workers to make fine adjustments.

[0049] The number of the first elongated holes 311 may also be different from the number of the second elongated holes 312. For example, two adjacent second elongated holes 312 may be connected, that is, two first elongated holes 311 correspond to one second elongated hole 312, or all the second elongated holes 312 may be connected, that is, all the first elongated holes 311 correspond to one second elongated hole 312. The specific setting depends on the situation.

[0050] The length of the first elongated hole 311 can be set to 3cm, 5cm, 10cm or other lengths, depending on the specific situation.

[0051] The first elongated hole 311 and the second elongated hole 312 mentioned above are usually set to the same structure, but they can also be set to different structures, depending on the specific situation.

[0052] When there are two or more first elongated holes 311, first gaskets 33 are usually installed on all first elongated holes 311. This structure has a good fixing effect. Alternatively, first gaskets 33 can be installed on some first elongated holes 311, while the first gaskets 33 are not installed on other first elongated holes 311. This structure has a relatively poor fixing effect. The specific setting depends on the situation.

[0053] The number of the aforementioned first shims 33 is usually multiple. The more first shims 33 there are, the better the adjustment effect.

[0054] Each first elongated hole 311 typically has one first gasket 33 installed inside it. Two or more identical first gaskets 33 may also be installed in the first elongated hole 311, depending on the specific situation.

[0055] The first gasket 33 is usually provided with a first positioning hole 330. When the first elongated hole 311 and the first gasket 33 are relatively long, two, three or even more first positioning holes 330 can also be provided, depending on the specific situation.

[0056] The shape of the first gasket 33 is typically fitted to the shape of the first elongated hole 311. The shape of the first gasket 33 may not perfectly fit the shape of the first elongated hole 311, but the two ends of the first gasket 33 located in the telescopic direction of the second material rack 2 abut against the ends of the first elongated hole 311. For example, if the elongated hole is rectangular, the first gasket 33 is hexagonal. Similarly, the shape of the second gasket 35 is typically fitted to the shape of the second elongated hole 312. The shape of the second gasket 35 may not perfectly fit the shape of the second elongated hole 312, but the two ends of the second gasket 35 located in the telescopic direction of the second material rack 2 abut against the ends of the second elongated hole 312. Figure 9 , Figure 9 The first gasket 33 and the second gasket 35 have a rhomboid structure.

[0057] In one embodiment, a plurality of second gaskets 35 are detachably disposed within the second elongated hole 312. The two ends of the second gaskets 35 located in the telescopic direction of the second material rack 2 abut against the ends of the second elongated hole 312. The second gaskets 35 have second positioning holes 350. The positions of the second positioning holes 350 on at least two second gaskets 35 are different. The positions of the second positioning holes 350 correspond to the positions of the first positioning holes 330. The fixing member 34 can pass through the first positioning hole 330 and the second fixing hole 320.

[0058] The structures of the first gasket 33 and the second gasket 35 are usually the same, but they can also be set differently, depending on the specific circumstances.

[0059] The first gasket 33 and the second gasket 35 are usually configured to fit against the inner tube 32, which provides a better fixing effect; the first gasket 33 and the second gasket 35 can also be configured not to fit against the inner tube 32, depending on the specific situation.

[0060] The structures of the second elongated hole 312, the second gasket 35, and the second positioning hole 350 can be referenced from the first elongated hole 311, the first gasket 33, and the first positioning hole 330, and will not be described again here.

[0061] The second gasket 35 mentioned above may not be required. This structure has a relatively poor fixing effect, and the specific setting should be determined according to the situation.

[0062] In one embodiment, the outer tube 31 is located in the first material rack 1 and the inner tube 32 is located in the second material rack 2; in another embodiment, the outer tube 31 is located in the second material rack 2 and the inner tube 32 is located in the first material rack 1.

[0063] Because there is a certain gap between the inner tube 32 and the outer tube 31, the inner tube 32 and the outer tube 31 can expand and contract. When the force is large, the inner tube 32 and the outer tube 31 will tilt. The first gasket 33 and the second gasket 35 can abut against the inner tube 32, which provides good support for the inner tube 32 and prevents it from tilting. At the same time, it can strengthen the connection between the inner tube 32 and the outer tube 31.

[0064] In one embodiment, the outer tube 31 is disposed on the second material rack 2, and the inner tube 32 is slidably inserted or sleeved on the first material rack 1. The first material rack 1 is provided with a locking hole 40. The first material rack 1 and the inner tube 32 are fixed by a locking member 4. The locking member 4 can pass through the fixing hole 320 and the locking hole 40 for fixing.

[0065] The inner tube 32 on the first material rack 1 can also be configured to be non-retractable, and the inner tube 32 on the first material rack 1 is integrally formed with the first material rack 1; the first material rack 1 can also be configured as other material rack structures, depending on the specific situation.

[0066] In one embodiment, the two corresponding inner tubes 32 along the length direction can also be integrally formed, that is, there is only one inner tube 32 along the length direction, and the first material rack 1 is sleeved on the inner tube 32, depending on the specific situation.

[0067] In one embodiment, the fastener 34 is a bolt 341 and a nut 342.

[0068] The aforementioned fastener 34 can also be a pin or other components, which are well-known components and will not be described in detail here.

[0069] In one embodiment, the second material rack 2 includes four third material racks 21 and two fourth material racks 22. The four third material racks 21 are located at the four corners, and the fourth material racks 22 are connected between corresponding two third material racks 21. The third material racks 21 and the fourth material racks 22 are telescopically connected through a second connecting part 5. The first material rack 1 includes a fifth material rack 11 telescopically connected to the third material racks 21 and a sixth material rack 12 telescopically connected to the fourth material racks 22. The fifth material rack 11 and the sixth material rack 12 are telescopically connected through a third connecting part 6.

[0070] The aforementioned second material rack 2 can also be configured as a third material rack 21 and a fourth material rack 22. The aforementioned second material rack 2 can also be configured as a non-extendable and non-adjustable structure. The second material rack 2 can also be configured as other frame structures, depending on the specific circumstances.

[0071] In one embodiment, the first connecting part 3 and the second connecting part 5 have the same structure, and the first connecting part 3 and the third connecting part 6 have the same structure.

[0072] The structure of the second connecting part 5 may also be different from that of the first connecting part 3. The second connecting part 5 may also be set as a common sleeve structure, which cannot be fine-tuned. The specific setting depends on the situation.

[0073] The structure of the third connecting part 6 may also be different from that of the first connecting part 3. The third connecting part 6 may also be set as a common sleeve structure, which cannot be fine-tuned. The specific setting depends on the situation.

[0074] In one embodiment, a connecting rod 13 is rotatably connected between the fifth material rack 11 and the sixth material rack 12. The sixth material rack 12 is provided with a slide rail 120. One end of the connecting rod 13 is rotatably connected to the fifth material rack 11 through a rotating shaft 130, and the rotating shaft 130 at the other end of the connecting rod 13 can slide on the slide rail 120.

[0075] The aforementioned slide rail 120 can also be installed on the fifth material rack 11, depending on the specific situation.

[0076] The telescopic rack of this utility model is mainly used for the transportation of new energy battery packs, but can also be used for the transportation of other goods.

[0077] The working principle of this utility model is as follows:

[0078] When fine-tuning the main body of the material rack, the fixing part 34, the first shim 33, and the second shim 35 are disassembled, and the inner tube 32 and the outer tube 31 are moved to adjust the distance between them. After the adjustment is completed, according to the position of the fixing hole 320, the appropriate first shim 33 is installed in the first elongated hole 311, and the second shim 35 is installed in the second elongated hole 312. The fixing part 34 passes through the fixing hole 320, the first positioning hole 330, and the second positioning hole 350 for fixation, thereby realizing fine-tuning. The disassembly and assembly are convenient and quick.

[0079] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A micro-adjustable telescopic material rack, comprising a rack body, characterized in that: The material rack body includes a first material rack and at least one retractable second material rack mounted on the first material rack. The first material rack and the second material rack are retractably connected by at least one first connecting part. The first connecting part includes an outer tube and an inner tube. The outer tube can be sleeved on the inner tube. The inner tube has a fixing hole. The outer tube has at least one pair of first elongated holes and second elongated holes. At least two first gaskets are detachably mounted in at least one first elongated hole. The positions of the first positioning holes on the at least two first gaskets are different. The first gasket has at least one first positioning hole. The two ends of the first gasket located in the telescopic direction of the second material rack abut against the ends of the first elongated holes. A fixing member passes through the fixing hole and the first positioning hole. The fixing member can pass through the first material rack and the second material rack for fixation.

2. The adjustable telescopic material rack according to claim 1, characterized in that: At least one of the second elongated holes is detachably provided with at least two second gaskets, the two ends of the second gasket located in the telescopic direction of the second material rack abutting against the end of the second elongated hole, the second gasket having at least one second positioning hole, the positions of the second positioning holes on the at least two second gaskets being different, the second positioning hole corresponding to the position of the first positioning hole, and the fastener being able to pass through the first positioning hole and the second fixing hole.

3. The adjustable telescopic material rack according to claim 1, characterized in that: The inner tube has multiple pairs of fixing holes, the outer tube has at least two pairs of first elongated holes and second elongated holes, and each of the first gaskets has a first positioning hole.

4. The adjustable telescopic material rack according to claim 1, characterized in that: The outer tube is located on the first material rack and the inner tube is located on the second material rack, or the outer tube is located on the second material rack and the inner tube is located on the first material rack.

5. The adjustable telescopic material rack according to claim 1, characterized in that: The second material rack is located at one or both ends of the first material rack.

6. The adjustable telescopic material rack according to claim 5, characterized in that: The outer tube is mounted on the second material rack, and the inner tube is slidably inserted into or sleeved on the first material rack. The first material rack is provided with a locking hole, and the first material rack and the inner tube are fixed by a locking member. The locking member can pass through the fixing hole and the locking hole for fixing.

7. The adjustable telescopic material rack according to claim 1, characterized in that: The fasteners are bolts and nuts.

8. An adjustable telescopic material rack according to any one of claims 1 to 7, characterized in that: The second material rack includes at least one third material rack and at least one fourth material rack, wherein the third material rack and the fourth material rack are retractably connected by at least one second connecting part; the first material rack includes a fifth material rack retractably connected to the third material rack and a sixth material rack retractably connected to the fourth material rack, wherein the fifth material rack and the sixth material rack are retractably connected by at least one third connecting part.

9. The adjustable telescopic material rack according to claim 8, characterized in that: The third material rack is located at two or four corners of the main body of the material rack, and the fourth material rack is connected between the corresponding two third material racks.

10. The adjustable telescopic material rack according to claim 8, characterized in that: The first connecting part and the second connecting part have the same structure, and the first connecting part has the same structure as the third connecting part.