A shelf connection structure

Abstract

The utility model relates to the field of material box type shelves, and discloses a shelf connection structure, including a crossbeam, a crossbeam and a connection seat, wherein a bearing surface is provided on the outer side of the crossbeam, and a first clamping hole is provided on the bearing surface of the crossbeam; a slot is provided at the end of the crossbeam, and a second clamping hole is provided on the slot wall; the connection seat includes a plug-in block, a clamping part, an inserting tube and an elastic limiting part, wherein the plug-in block is used to be inserted into the slot, the clamping part is connected to the plug-in block and is used to align the clamping hole, the inserting tube is used to align the first clamping hole, the elastic limiting part is connected to the inserting tube and can be elastically deformed toward the inside of the inserting tube, and the elastic limiting part is used to limit the inserting tube from moving out of the first clamping hole. The shelf connection structure provided by the utility model can solve the problem of how to reduce the difficulty of installing the crossbeam and the crossbeam.

Description

Technical Field

[0001] The utility model relates to the field of material box type shelves, in particular to a shelf connection structure. Background Art

[0002] Most of the existing material box-type racks include C-shaped crossbeams and square span beams, in which the two ends of the span beam are respectively installed on the two crossbeams. Due to the large number of span beams, in order to facilitate installation, most of the connection structures of the crossbeams and span beams of the material box-type racks adopt a quick-install design. There are roughly two types of existing quick-install design schemes. The first is to weld a metal joint in the C-shaped groove of the crossbeam, and then apply force to deform the end of the span beam and plug it into the C-shaped groove, while making the slot at the end of the span beam relative to the metal joint and snap-fit. The second is to directly laser cut a docking slot on the crossbeam, and then apply force to deform the end of the span beam and plug it into the C-shaped groove, so that the end of the span beam is snap-fitted with the docking slot of the crossbeam. Both schemes have high requirements for the processing accuracy of the crossbeams and span beams, otherwise the installation of the crossbeams and span beams in the later stage will be very difficult.

[0003] Both of the above solutions require the deformation of the end of the span beam before it can be connected to the cross beam. However, when it is necessary to increase the load-bearing capacity of the shelf or extend the length of the span beam, the span beam needs to be thickened, which makes it more difficult to deform the span beam, and thus makes the installation of the cross beam and the span beam more difficult. A rubber hammer is required to deform the end of the span beam to complete the installation. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The utility model provides a shelf connection structure, which can at least solve the technical problem of how to reduce the difficulty of installing the cross beam and the span beam.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a shelf connection structure, comprising:

[0008] A crossbeam, wherein a bearing surface is provided on the outer side of the crossbeam, and a first clamping hole is provided on the bearing surface of the crossbeam;

[0009] A span beam, wherein a slot is provided at the end of the span beam, and a second clamping hole is provided on the slot wall;

[0010] The connecting seat includes a plug-in block, a clamping part, an inserting sleeve and an elastic limiting part. The plug-in block is used to be plugged into the slot. The clamping part is connected to the plug-in block and is used to align and clamp the second clamping hole. The inserting sleeve is used to align and clamp the first clamping hole. The elastic limiting part is connected to the inserting sleeve and can be elastically deformed into the inside of the inserting sleeve. The elastic limiting part is used to limit the inserting sleeve from moving out of the first clamping hole.

[0011] It is further provided that the aforementioned connecting seat also includes a sound-absorbing baffle, which is respectively fixed to the plug-in block and the plug-in tube and is located between the cross beam and the cross beam.

[0012] Further, the aforementioned clamping portion includes:

[0013] An elastic arm is connected to the plug-in block and can be elastically deformed toward the inside of the plug-in block;

[0014] The clamping protrusion is connected to the outer side of the elastic arm and is used for being aligned and clamped in the second clamping hole.

[0015] It is further provided that the aforementioned engaging protrusion is provided with a first guide surface, which is gradually inclined outward in a direction away from the slot and is used to guide the elastic arm to elastically deform toward the inside of the plug-in block when the plug-in block is plugged into the slot.

[0016] It is further provided that the aforementioned elastic limiting portion is connected to one end of the insert tube inserted into the first clamping hole, wherein when the elastic limiting portion is not deformed, the maximum cross-sectional dimension of the elastic limiting portion is larger than the aperture of the first clamping hole to limit the insert tube from moving out of the first clamping hole.

[0017] It is further configured that a second guide surface is provided on the outer side of the aforementioned elastic limiting portion, and the second guide surface gradually extends outwardly in a direction close to the plug-in block or is configured in an arc transition, so as to guide the elastic limiting portion to elastically deform toward the inside of the plug-in tube when the plug-in tube is inserted into the first clamping hole.

[0018] It is further configured that the aforementioned crossbeam is a P-type beam, and the cross section of the crossbeam is a closed structure, and the step surface of the P-type beam is configured as a bearing surface.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the shelf connection structure provided by the utility model has the following beneficial effects:

[0021] When installing the shelf connection structure provided by the utility model, the plug-in block is first inserted into the slot, and the clamping part is inserted into the slot together with the plug-in block until the clamping part is opposite to the second clamping hole, and the clamping part can be clamped into the second clamping hole, so that the connecting seat is clamped into the slot at the end of the span beam; then, the insert tube is inserted into the first clamping hole, and the elastic limiting part is inserted into the first clamping hole together with the insert tube, and the elastic limiting part is elastically deformed toward the inside of the insert tube until the elastic limiting part passes through the first clamping hole, and the elastic limiting part is restored to limit the insert tube from moving out of the first clamping hole. A clamping hole is provided to clamp the connecting seat and the bearing surface of the crossbeam, so as to complete the installation of the crossbeam and the span beam; wherein, since the end of the span beam is directly clamped with the bearing surface on the outside of the crossbeam through the connecting seat, the end of the span beam does not need to be deformed to be inserted into the crossbeam. Therefore, the connection between the crossbeam and the span beam mainly depends on the processing accuracy of the connecting seat, and is not affected by the processing accuracy of the crossbeam and the span beam. Moreover, the thickening of the span beam does not change the size of the slot. Therefore, the thickening of the span beam does not affect the clamping of the connecting seat with the crossbeam and the span beam, and will not increase the difficulty of installing the crossbeam and the span beam.

[0022] In summary, the installation of the shelf connection structure is simple, quick and easy to operate, and is not affected by the processing accuracy of the cross beams and span beams, nor is it affected by the thickness of the span beams. It greatly reduces the installation difficulty of the cross beams and span beams and improves the installation efficiency of the shelf. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the shelf connection structure in the embodiment;

[0024] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0025] Figure 3 A cross-sectional view of the connection structure between the connection seat and the crossbeam in the embodiment;

[0026] Figure 4 It is a cross-sectional view of the connection structure between the connecting seat and the span beam in the embodiment.

[0027] Figure Number:

[0028] 1. crossbeam; 11. bearing surface; 12. first clamping hole;

[0029] 2. span beam; 21. slot; 22. second clamping hole;

[0030] 3. Connecting seat; 31. Plug-in block; 32. Clamping part; 321. Elastic arm; 322. Clamping protrusion; 323. First guide surface; 33. Silencing baffle; 34. Insertion tube; 35. Elastic limiting part; 351. Second guide surface. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] The utility model provides a shelf connection structure, which is used to solve the problem of how to reduce the difficulty of installing a cross beam 1 and a span beam 2.

[0033] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, Figure 1 is a structural schematic diagram of the shelf connection structure in the embodiment, Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle. Figure 3 This is a cross-sectional view of the connection structure between the connection seat and the crossbeam in the embodiment. Figure 4 It is a cross-sectional view of the connection structure of the connection seat and the cross beam in the embodiment. The shelf connection structure includes a cross beam 1, a cross beam 2 and a connection seat 3.

[0034] The outer side of the cross beam 1 has a bearing surface 11 , and the bearing surface 11 of the cross beam 1 has a first clamping hole 12 .

[0035] The end of the span beam 2 is provided with a slot 21 , and a slot wall of the slot 21 is provided with a second clamping hole 22 .

[0036] The connection seat 3 includes a plug-in block 31, a clamping portion 32, an inserting sleeve 34 and an elastic limiting portion 35. The plug-in block 31 is used to be plugged into the slot 21, the clamping portion 32 is connected to the plug-in block 31 by an integral connection or bonding, and the clamping portion 32 is used to align and clamp the second clamping hole 22. The inserting sleeve 34 is used to align and clamp the first clamping hole 12, the elastic limiting portion 35 is connected to the inserting sleeve 34 by an integral connection or bonding, and can be elastically deformed into the inserting sleeve 34, and the elastic limiting portion 35 is used to limit the inserting sleeve 34 from moving out of the first clamping hole 12.

[0037] When installing the shelf connection structure provided by the above technical solution, the plug-in block 31 is first inserted into the slot 21, and the clamping portion 32 is inserted into the slot 21 together with the plug-in block 31 until the clamping portion 32 is opposite to the second clamping hole 22, and the clamping portion 32 can be clamped into the second clamping hole 22, so that the connecting seat 3 is clamped to the slot 21 at the end of the cross beam 2; then, the end of the cross beam 2 is placed on the bearing surface 11 of the cross beam 1 through the connecting seat 3, and the insertion tube 34 is inserted into the first clamping hole 12, and the elastic limiting portion 35 is inserted into the first clamping hole 12 together with the insertion tube 34, and the elastic limiting portion 35 is elastically deformed toward the inside of the insertion tube 34 until the elastic limiting portion 35 passes through the first clamping hole 12, and the elastic limiting portion 35 is restored to limit the insertion tube 34 from moving out of the first clamping hole 12, thereby clamping the connecting seat 3 and the bearing surface 11 of the cross beam 1, and the installation of the cross beam 1 and the cross beam 2 can be completed. Among them, since the end of the above-mentioned span beam 2 is directly clamped with the bearing surface 11 on the outside of the cross beam 1 through the connecting seat 3, the end of the span beam 2 does not need to be deformed to be inserted into the cross beam 1. Therefore, the connection between the cross beam 1 and the span beam 2 mainly depends on the processing accuracy of the connecting seat 3, and is not affected by the processing accuracy of the cross beam 1 and the span beam 2. Moreover, the thickening of the span beam 2 does not change the size of the slot 21. Therefore, the thickening of the span beam 2 does not affect the clamping of the connecting seat 3 with the cross beam 1 and the span beam 2, and will not increase the difficulty of installing the cross beam 1 and the span beam 2.

[0038] In summary, the installation of the shelf connection structure is simple, quick and easy to operate, and is not affected by the processing accuracy of the cross beam 1 and the cross beam 2, nor by the thickness of the cross beam 2. It greatly reduces the installation difficulty of the cross beam 1 and the cross beam 2 and improves the installation efficiency of the shelf.

[0039] The shape of the plug-in block 31 can be adapted to the slot 21 so as to be plugged into the slot 21 and transfer the pressure on the cross beam 2 to the cross beam 1. The connecting seat 3 can be made of plastic as a whole. In this way, the connecting seat 3 has higher production efficiency, lower production cost and difficulty than the existing metal joints, and is easier to deform, which facilitates the installation of the cross beam 1 and the cross beam 2. Alternatively, the connecting seat 3 can also be made of plastic only at the part that needs to be deformed and clamped.

[0040] See also Figure 2 and Figure 3As shown, in one embodiment of the connection seat 3, the connection seat 3 also includes a sound-absorbing baffle 33, which is fixedly connected to the plug-in block 31 and the plug-in tube 34 by integral connection or bonding, and the sound-absorbing baffle 33 is located between the cross beam 2 and the cross beam 1. During the use of automated warehousing, the shelf may vibrate slightly. Since there is a gap at the connection between the cross beam 1 and the cross beam 2, the cross beam 1 and the cross beam 2 may emit metal collision noise due to mutual collision, especially between the cross beam 1 and the cross beam 2 at the vacant cargo space. In this way, the cross beam 2 is placed on the bearing surface 11 on the outside of the cross beam 1 through the connection seat 3, and the cross beam 1 and the cross beam 2 are separated by the sound-absorbing baffle 33 and are not in direct contact. The sound-absorbing baffle 33 has the function of absorbing vibration and sound, thereby greatly reducing the noise generated between the cross beam 2 and the cross beam 1.

[0041] The above-mentioned sound-absorbing baffle 33 can be made of noise-absorbing materials such as plastic or rubber alone and integrally formed to absorb vibration and sound, or can be made of plastic together with the connecting seat 3 as a whole.

[0042] One end of the above-mentioned insert tube 34 can be connected to the bottom surface of the sound-absorbing baffle 33 by means of integral connection or bonding, and the above-mentioned elastic limiting portion 35 is connected to the other end of the insert tube 34 by means of integral connection or bonding. The axial length of the insert tube 34 (i.e., the distance between the elastic limiting portion 35 and the bottom surface of the sound-absorbing baffle 33) is not less than the axial length of the first clamping hole 12. In this way, when the elastic limiting portion 35 passes through the first clamping hole 12, the bearing surface 11 of the beam 1 is limited between the elastic limiting portion 35 and the bottom surface of the sound-absorbing baffle 33, thereby playing the role of clamping the connecting seat 3 and the beam 1.

[0043] See also Figure 2 , Figure 3 and Figure 4 As shown, in one embodiment of the clamping portion 32, the clamping portion 32 includes an elastic arm 321 and a clamping protrusion 322. The elastic arm 321 is connected to the plug-in block 31 by an integral connection or bonding, and can be elastically deformed toward the inside of the plug-in block 31. The clamping protrusion 322 is connected to the outside of the elastic arm 321 by an integral connection or bonding, and is used to be aligned and clamped in the second clamping hole 22. In this way, when the clamping portion 32 is inserted into the slot 21 together with the plug-in block 31, the clamping protrusion 322 is tightly against the inner wall of the slot 21, and the elastic arm 321 is deformed in linkage, until the clamping protrusion 322 is in a relative position with the second clamping hole 22, the elastic arm 321 is restored and the clamping protrusion 322 is moved into the second clamping hole 22 in linkage, thereby playing the role of clamping the connecting seat 3 to the slot 21 of the cross beam 2. The clamping structure is simple and the production difficulty is low.

[0044] See also Figure 2 and Figure 4As shown, on the basis of the above embodiment, the clamping protrusion 322 has a first guide surface 323, and the first guide surface 323 gradually extends outwardly in a direction away from the slot 21, and is used to guide the elastic arm 321 to elastically deform toward the inside of the plug-in block 31 when the plug-in block 31 is plugged into the slot 21. In this way, when the plug-in block 31 is forced to drive the clamping portion 32 to be inserted into the slot 21, the clamping protrusion 322 is tightly pressed against the inner wall of the slot 21 through the first guide surface 323, and the elastic arm 321 is elastically deformed toward the inside of the plug-in block 31 through the first guide surface 323, so that the clamping portion 32 can be smoothly inserted into the slot 21 together with the plug-in block 31.

[0045] See also Figure 3 and Figure 4 As shown, in one embodiment of the elastic limiting portion 35, the elastic limiting portion 35 is connected to one end of the insert tube 34 inserted into the first clamping hole 12 by means of integral connection or bonding, and when the elastic limiting portion 35 is not deformed, the maximum cross-sectional dimension of the elastic limiting portion 35 is larger than the aperture of the first clamping hole 12 to limit the insert tube 34 from moving out of the first clamping hole 12. In this way, when the insert tube 34 is inserted into the first clamping hole 12, the elastic limiting portion 35 is inserted into the first clamping hole 12 together with the insert tube 34, and elastically deforms toward the inside of the insert tube 34, so that the cross-sectional size of the elastic limiting portion 35 is less than or equal to the aperture of the first clamping hole 12, until the elastic limiting portion 35 passes through the first clamping hole 12, the elastic limiting portion 35 is restored, so that the maximum cross-sectional size of the elastic limiting portion 35 is greater than the aperture of the first clamping hole 12. Therefore, if the insert tube 34 moves in the direction of moving out of the first clamping hole 12, the elastic limiting portion 35 will abut and interfere with the open end surface of the first clamping hole 12, thereby limiting the insert tube 34 from automatically moving out of the first clamping hole 12, effectively preventing the clamping structure of the connecting seat 3 and the cross beam 1 from automatically loosening. This installation method is simple, fast, easy to operate, and is not affected by the thickness of the cross beam 2.

[0046] See also Figure 3As shown, on the basis of the above embodiment, the outer side of the elastic limiting portion 35 has a second guide surface 351, and the second guide surface 351 gradually extends outward in an inclined manner or transitions into an arc in the direction close to the plug-in block 31. The second guide surface 351 is used to guide the elastic limiting portion 35 to elastically deform toward the inside of the plug-in sleeve 34 when the plug-in sleeve 34 is inserted into the first clamping hole 12. In this way, when the insert tube 34 is inserted into the first clamping hole 12 under force, the elastic limiting portion 35 is tightly pressed against the inner wall of the first clamping hole 12 through the second guide surface 351, and the elastic limiting portion 35 is guided to elastically deform inwardly through the second guide surface 351, so that the elastic limiting portion 35 can be inserted into the first clamping hole 12 together with the insert tube 34 and pass through the first clamping hole 12; and the elastic limiting portion 35 recovers after passing through the first clamping hole 12, so that the second guide surface 351 cannot contact the inner wall of the first clamping hole 12, so as to ensure that the elastic limiting portion 35 will not move out of the first clamping hole 12 by itself due to the guidance of the second guide surface 351, thereby avoiding the automatic loosening of the clamping structure between the connecting seat 3 and the beam 1.

[0047] See also Figure 3 As shown, in one embodiment of the crossbeam 1, the crossbeam 1 is a P-type beam, and the cross section of the crossbeam 1 is a closed structure, and the step surface of the P-type beam is configured as a bearing surface 11. In this way, compared with the existing C-type beam and other non-closed structure crossbeam 1 beam body, the closed structure can greatly improve the structural strength of the crossbeam 1. When in use, the connecting seat 3 is in surface contact with the step surface of the P-type beam, and the pressure of the goods is transmitted to the P-type beam through the step surface. Since the P-type beam has a higher structural strength than the existing square tube crossbeam 1 or C-type crossbeam 1, the P-type beam can solve the problem that the strength of the connecting seat 3 made of plastic is lower than that of the existing metal joint, thereby ensuring the structural strength and load-bearing capacity of the shelf.

[0048] See also Figure 3 and Figure 4 As shown, the cross beam 1 can be formed into a P-shaped beam by bending a steel plate, and a row of first clamping holes 12 can be quickly processed on the step surface of the P-shaped beam by a continuous punching process. The cross beam 2 can be formed into a square tube by a rolling process, and a square slot 21 is formed at both ends, so that the processing difficulty of the cross beam 1 and the cross beam 2 is greatly reduced, the production efficiency is improved, and the production cost is reduced.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shelf connection structure, characterized in that: include: A crossbeam, wherein a bearing surface is provided on the outer side of the crossbeam, and a first clamping hole is provided on the bearing surface of the crossbeam; A span beam, wherein a slot is provided at the end of the span beam, and a second clamping hole is provided on the slot wall; The connecting seat includes a plug-in block, a clamping portion, an inserting sleeve and an elastic limiting portion. The plug-in block is used to be plugged into the slot. The clamping portion is connected to the plug-in block and is used to align and clamp the second clamping hole. The inserting sleeve is used to align and clamp the first clamping hole. The elastic limiting portion is connected to the inserting sleeve and can be elastically deformed into the inside of the inserting sleeve. The elastic limiting portion is used to limit the inserting sleeve from moving out of the first clamping hole.

2. A shelf connection structure according to claim 1, characterized in that: The connecting seat also includes a sound-absorbing baffle, which is respectively fixed to the plug-in block and the plug-in tube and is located between the span beam and the cross beam.

3. A shelf connection structure according to claim 1, characterized in that: The clamping portion comprises: An elastic arm connected to the plug-in block and capable of elastically deforming toward the inside of the plug-in block; The clamping protrusion is connected to the outer side of the elastic arm and is used for being aligned and clamped in the second clamping hole.

4. A shelf connection structure according to claim 3, characterized in that: The engaging protrusion is provided with a first guide surface, which is gradually inclined outward in a direction away from the slot and is used to guide the elastic arm to elastically deform toward the inside of the plug-in block when the plug-in block is plugged into the slot.

5. A shelf connection structure according to claim 1, characterized in that: The elastic limiting portion is connected to one end of the insert tube inserted into the first clamping hole, wherein when the elastic limiting portion is not deformed, the maximum cross-sectional dimension of the elastic limiting portion is larger than the aperture of the first clamping hole to limit the insert tube from moving out of the first clamping hole.

6. A shelf connection structure according to claim 5, characterized in that: A second guide surface is provided on the outer side of the elastic limiting portion, which gradually extends outwardly in a direction close to the plug-in block or is set in an arc transition, and is used to guide the elastic limiting portion to elastically deform toward the inside of the plug-in tube when the plug-in tube is inserted into the first clamping hole.

7. A shelf connection structure according to claim 1, characterized in that: The cross beam is a P-shaped beam, and the cross section of the cross beam is a closed structure, and the step surface of the P-shaped beam is configured as the bearing surface.

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