Building structure connection device and method of use thereof

Abstract

The present invention discloses a building structure connection device and a method for using the same, and relates to the field of construction engineering. The building structure connection device and the method for using the same comprise a transverse connection profile and a vertical connection profile, wherein the end of the transverse connection profile is rotatably connected to the end of the vertical connection profile via two pins, and through mounting holes are provided on the top of the transverse connection profile and the side of the vertical connection profile; an adjustment mechanism is installed between the transverse connection profile and the vertical connection profile. The building structure connection device and the method for using the same can pull a limiting sleeve to move upward or downward through the provided adjustment mechanism, so that the angle between the transverse connection profile and the vertical connection profile can be freely adjusted until the upper surface of the transverse connection profile can be against the bottom of the cantilever structure, which is convenient for adjustment and has low cost.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering, in particular to a building structure connection device and a use method thereof. Background Art

[0002] In construction projects, there are many building structures. During the construction process, multiple structural components need to be connected and installed. Among them, cantilever structure is one of the common structural forms in engineering structures, such as awnings, eaves, external balconies, and cantilevered corridors in construction projects. This structure is a beam or plate cantilevered from the main structure to form a cantilever structure.

[0003] During the installation of the cantilever structure, it is generally necessary to install the cantilever structure on the facade of the building. During the installation and connection process, most of the time, a lower support frame is used to support the cantilever structure. One side of the lower support frame is fixed on the facade of the building, and the other side is fixedly installed on the bottom of the cantilever structure, thereby achieving an effective fixed support effect on the cantilever structure.

[0004] However, the inclination angles of different existing cantilever structures are different, and even the inclination angles of different positions of the same cantilever structure are also different. It is necessary to manufacture different lower support frames for different inclination angles each time, which is rather cumbersome. Therefore, we propose a building structure connection device and a method for using the same. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a building structure connection device and a method for using the same, which solves the problem that the inclination angles of different existing cantilever structures are different, and different lower support frames need to be manufactured for different inclination angles each time, which is relatively cumbersome.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a building structure connection device and a method of using the same, comprising a transverse connection profile and a vertical connection profile, wherein the end of the transverse connection profile and the vertical connection profile are equipped with two pins, and the end of the transverse connection profile is rotatably connected to the end of the vertical connection profile through the two pins, and the top of the transverse connection profile and the side of the vertical connection profile are both provided with through mounting holes for connecting with the bottom of the cantilever structure and the facade of the building;

[0009] An adjustment mechanism is installed between the transverse connecting profile and the vertical connecting profile, and the adjustment mechanism includes two movable sleeves and two movable rods. The bottom ends of the two movable rods are movably inserted into the inside of the two movable sleeves, and the bottom end of the movable sleeve and the top end of the movable rod are respectively fixedly installed with a first connecting block and a second connecting block. The first connecting block and the second connecting block are respectively rotatably connected to the outer surface of the vertical connecting profile and the outer surface of the transverse connecting profile, and a limiting component is installed between the two movable sleeves.

[0010] Preferably, the limiting assembly includes a limiting sleeve, which is assembled between two movable sleeves, and the two movable sleeves are slidably connected to the inside of sliding blocks, and the two sliding blocks are respectively fixedly connected to the bottom ends of the two movable rods, and the two ends of the limiting sleeve are respectively fixedly inserted into the inside of the two sliding blocks.

[0011] Preferably, two limit bars are fixedly connected to the outer surface of the movable sleeve, a sliding groove connected to the interior of the movable sleeve is provided between the outer surface of the movable sleeve and the two limit bars, a moving block is slidably connected to the inner wall of the sliding groove, and the two moving blocks are respectively fixedly connected to the two ends of the limit sleeve.

[0012] Preferably, the limiting sleeve has two positioning strips movably inserted inside, and the two facing ends of the two positioning strips are fixedly connected with push blocks, both ends of the push blocks pass through the outer surface of the limiting sleeve and extend outward, and the push blocks are slidably connected to the inside and outer surface of the limiting sleeve, and a positioning spring is fixedly connected between the side wall of the push block and the inner wall of the limiting sleeve.

[0013] Preferably, a plurality of slots are provided on the inner walls on both sides of the slide slot, and two slots are slidably connected to the inner wall of the moving block, and the ends of the two slots extend outward through the two sides of the moving block respectively and are inserted into two of the slots;

[0014] The end of the positioning strip passes through the end of the limiting sleeve and extends toward the inside of the moving block.

[0015] Preferably, both sides of the end of the positioning strip inside the moving block are provided with inclined surfaces, and the two inclined surfaces are respectively fitted with the two clamping blocks.

[0016] Preferably, reset grooves are provided on the inner walls on both sides of the moving block, a baffle is fixedly connected to the inner wall of the reset groove, two reset blocks are slidably connected to the inner wall of the reset groove, and the two reset blocks are respectively fixedly connected to the side walls of the two clamping blocks.

[0017] Preferably, a return spring is fixedly connected between the baffle and the return block, the return spring is in a stretched state, and the elastic force of the positioning spring is greater than the elastic force of the four return springs.

[0018] The following steps are involved:

[0019] S1. During use, firstly fit the vertical connection profile to the building facade, and make the top of the vertical connection profile abut against the bottom of the cantilever structure. At this time, the vertical connection profile can be fixed on the building facade through the multiple mounting holes on the side of the vertical connection profile by expansion bolts;

[0020] S2, then pull the two push blocks toward each other, compress the two positioning springs, and drive the two positioning strips to slide toward each other inside the limiting sleeve, so that the ends of the positioning strips slide outward from the moving blocks, so that the ends of the positioning strips no longer squeeze the two clamping blocks;

[0021] S3, when the end of the positioning strip begins to separate from the two card blocks, the four stretched return springs begin to return to their original positions and contract, driving the two card blocks to slide toward each other, thereby causing the end of the card block to detach from the card slot and enter the interior of the moving block;

[0022] S4. At this time, the limiting sleeve can be pulled to move upward or downward. When the limiting sleeve moves upward, the movable rod is pushed to move toward the outside of the movable sleeve, thereby pushing the transverse connecting profile to rotate upward. Conversely, when the limiting sleeve moves upward, the transverse connecting profile is pushed to rotate downward, so that the angle between the transverse connecting profile and the vertical connecting profile can be freely adjusted until the upper surface of the transverse connecting profile can be against the bottom of the cantilever structure, which is convenient for adjustment and has low cost.

[0023] S5. Then release the two push blocks. Because the elastic force of the positioning spring is greater than the elastic force of the four return springs, the compressed positioning spring rebounds, pushing the positioning bar to slide on the inner wall of the limiting sleeve, so that the end of the positioning bar enters the moving block. The two inclined surfaces at the end of the positioning bar squeeze the two card blocks to move, so that the ends of the two card blocks extend outward through the two sides of the moving block respectively and are plugged into the two nearby card slots, thereby fixing the position of the limiting sleeve, and then fixing the positions of the horizontal connecting profile and the vertical connecting profile through the two movable sleeves and the two movable rods.

[0024] S6. Finally, through the multiple installation holes on the top of the transverse connecting profile, the transverse connecting profile can be fixedly installed at the bottom of the cantilever structure by expansion bolts, thereby providing effective support for the cantilever structure.

[0025] The present invention discloses a building structure connection device and a method of using the same, which have the following beneficial effects:

[0026] 1. The building structure connection device and the use method thereof can pull the limit sleeve to move upward or downward through the provided adjustment mechanism. When the limit sleeve moves upward, the movable rod is pushed to move toward the outside of the movable sleeve, thereby pushing the transverse connection profile to rotate upward. Conversely, when the limit sleeve moves upward, the transverse connection profile is pushed to rotate downward, thereby freely adjusting the angle between the transverse connection profile and the vertical connection profile until the upper surface of the transverse connection profile can be against the bottom of the cantilever structure, which is convenient for adjustment and has low cost.

[0027] 2. The building structure connection device and its use method, because the elastic force of the positioning spring is greater than the elastic force of the four return springs, the compressed positioning spring rebounds, pushing the positioning bar to slide on the inner wall of the limiting sleeve, so that the end of the positioning bar enters the moving block, and the two inclined surfaces at the end of the positioning bar respectively squeeze the two card blocks to move, so that the ends of the two card blocks respectively extend outward through the two sides of the moving block and are inserted into two nearby card slots, thereby fixing the position of the limiting sleeve, and then fixing the positions of the transverse connecting profile and the vertical connecting profile through two movable sleeves and two movable rods, and finally through the multiple mounting holes on the top of the transverse connecting profile, the transverse connecting profile can be fixedly installed on the bottom of the cantilever structure through expansion bolts, thereby effectively supporting the cantilever structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the structure of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the regulating mechanism of the present invention;

[0031] Figure 3 It is a structural schematic diagram of the connection between the movable sleeve and the movable rod of the present invention;

[0032] Figure 4 It is a structural schematic diagram of the limit assembly of the present invention;

[0033] Figure 5 For the present invention Figure 4 A part of the enlarged schematic diagram;

[0034] Figure 6 It is a partial structural schematic diagram of the limiting component of the present invention.

[0035] In the figure: 1. horizontal connecting profile; 101. pin; 2. vertical connecting profile; 201. mounting hole; 3. adjusting mechanism; 301. movable sleeve; 302. movable rod; 303. first connecting block; 304. second connecting block; 4. limiting sleeve; 401. sliding block; 402. limiting strip; 403. slide groove; 404. moving block; 405. positioning strip; 406. pushing block; 407. positioning spring; 408. slot; 409. clamping block; 5. reset slot; 501. baffle; 502. reset block; 503. reset spring. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] The embodiment of the present application solves the problem that the inclination angles of different existing cantilever structures are different, and different lower support frames need to be manufactured for different inclination angles each time, which is relatively cumbersome, by providing a building structure connection device and a method of using the same. The angle between the transverse connecting profile 1 and the vertical connecting profile 2 can be freely adjusted until the upper surface of the transverse connecting profile 1 can be abutted against the bottom of the cantilever structure, which is convenient for adjustment and has low cost.

[0038] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0039] The embodiment of the present invention discloses a building structure connection device.

[0040] According to the attached Figure 1-6 As shown, it includes a transverse connecting profile 1 and a vertical connecting profile 2, the end of the transverse connecting profile 1 and the vertical connecting profile 2 are equipped with two pins 101, and the end of the transverse connecting profile 1 is rotatably connected with the end of the vertical connecting profile 2 through the two pins 101, and the top of the transverse connecting profile 1 and the side of the vertical connecting profile 2 are both provided with through mounting holes 201 for connecting with the bottom of the cantilever structure and the facade of the building;

[0041] An adjustment mechanism 3 is installed between the horizontal connecting profile 1 and the vertical connecting profile 2. The adjustment mechanism 3 includes two movable sleeves 301 and two movable rods 302. The bottom ends of the two movable rods 302 are movably inserted into the inside of the two movable sleeves 301. The bottom end of the movable sleeve 301 and the top end of the movable rod 302 are respectively fixed with a first connecting block 303 and a second connecting block 304. The first connecting block 303 and the second connecting block 304 are respectively rotatably connected to the outer surface of the vertical connecting profile 2 and the outer surface of the horizontal connecting profile 1. A limiting component is installed between the two movable sleeves 301.

[0042] By means of the provided adjustment mechanism 3, the limiting sleeve 4 can be pulled to move upward or downward. When the limiting sleeve 4 moves upward, the movable rod 302 is pushed to move toward the outside of the movable sleeve 301, thereby pushing the transverse connecting profile 1 to rotate upward. Conversely, when the limiting sleeve 4 moves upward, the transverse connecting profile 1 is pushed to rotate downward, thereby freely adjusting the angle between the transverse connecting profile 1 and the vertical connecting profile 2 until the upper surface of the transverse connecting profile 1 can be against the bottom of the cantilever structure, which is convenient for adjustment and has low cost.

[0043] The limiting assembly includes a limiting sleeve 4, which is assembled between two movable sleeves 301. The two movable sleeves 301 are slidably connected inside with sliding blocks 401. The two sliding blocks 401 are respectively fixedly connected to the bottom ends of the two movable rods 302, and the two ends of the limiting sleeve 4 are respectively fixedly inserted into the inside of the two sliding blocks 401.

[0044] Two limit bars 402 are fixedly connected to the outer surface of the movable sleeve 301, and a sliding groove 403 connected to the interior of the movable sleeve 301 is opened between the outer surface of the movable sleeve 301 and the two limit bars 402. A moving block 404 is slidably connected to the inner wall of the sliding groove 403, and the two moving blocks 404 are fixedly connected to the two ends of the limit sleeve 4 respectively.

[0045] Two positioning bars 405 are movably inserted inside the limiting sleeve 4, and the facing ends of the two positioning bars 405 are fixedly connected with push blocks 406. The two ends of the push blocks 406 pass through the outer surface of the limiting sleeve 4 and extend outward, and the push blocks 406 are slidably connected to the inside and the outer surface of the limiting sleeve 4, and a positioning spring 407 is fixedly connected between the side wall of the push block 406 and the inner wall of the limiting sleeve 4.

[0046] A plurality of slots 408 are provided on the inner walls of both sides of the slide slot 403. Two slots 409 are slidably connected to the inner wall of the moving block 404. The ends of the two slots 409 extend outward through the two sides of the moving block 404 and are inserted into two of the slots 408.

[0047] The end of the positioning strip 405 passes through the end of the limiting sleeve 4 and extends toward the inside of the moving block 404 .

[0048] Both sides of the end of the positioning strip 405 inside the moving block 404 are formed into inclined surfaces, and the two inclined surfaces are respectively fitted with the two clamping blocks 409 .

[0049] Reset grooves 5 are provided on the inner walls of both sides of the moving block 404 , to which baffles 501 are fixedly connected, and to which two reset blocks 502 are slidably connected, and the two reset blocks 502 are fixedly connected to the side walls of the two clamping blocks 409 , respectively.

[0050] A return spring 503 is fixedly connected between the baffle 501 and the return block 502 . The return spring 503 is in a stretched state, and the elastic force of the positioning spring 407 is greater than the elastic force of the four return springs 503 .

[0051] Because the elastic force of the positioning spring 407 is greater than the elastic force of the four return springs 503, the compressed positioning spring 407 rebounds and pushes the positioning bar 405 to slide on the inner wall of the limiting sleeve 4, so that the end of the positioning bar 405 enters the moving block 404, and the two inclined surfaces at the end of the positioning bar 405 respectively squeeze the two card blocks 409 to move, so that the ends of the two card blocks 409 respectively extend outward through the two sides of the moving block 404 and are inserted into the two nearby card grooves 408, thereby fixing the position of the limiting sleeve 4, and then fixing the position of the transverse connecting profile 1 and the vertical connecting profile 2 through the two movable sleeves 301 and the two movable rods 302, and finally, through the multiple mounting holes 201 on the top of the transverse connecting profile 1, the transverse connecting profile 1 can be fixedly installed at the bottom of the cantilever structure through expansion bolts, thereby effectively supporting the cantilever structure.

[0052] The method for using the building structure connection device comprises the following steps:

[0053] S1. During use, firstly, the vertical connection profile 2 is fitted to the building facade, and the top of the vertical connection profile 2 is abutted against the bottom of the cantilever structure. At this time, the vertical connection profile 2 can be fixedly installed on the building facade through the multiple mounting holes 201 on the side of the vertical connection profile 2 by expansion bolts;

[0054] S2, then pull the two pushing blocks 406 toward each other, compress the two positioning springs 407, and drive the two positioning bars 405 to slide toward each other inside the limiting sleeve 4, so that the ends of the positioning bars 405 slide outward from the moving block 404, so that the ends of the positioning bars 405 no longer squeeze the two clamping blocks 409;

[0055] S3, when the end of the positioning bar 405 begins to separate from the two clamping blocks 409, the four stretched return springs 503 begin to return and contract, driving the two clamping blocks 409 to slide toward each other, thereby causing the end of the clamping block 409 to detach from the clamping slot 408 and enter the interior of the moving block 404;

[0056] S4. At this time, the limiting sleeve 4 can be pulled to move upward or downward. When the limiting sleeve 4 moves upward, the movable rod 302 is pushed to move toward the outside of the movable sleeve 301, thereby pushing the transverse connecting profile 1 to rotate upward. Conversely, when the limiting sleeve 4 moves upward, the transverse connecting profile 1 is pushed to rotate downward, so that the angle between the transverse connecting profile 1 and the vertical connecting profile 2 can be freely adjusted until the upper surface of the transverse connecting profile 1 can be against the bottom of the cantilever structure, which is convenient for adjustment and has low cost.

[0057] S5, then release the two pushing blocks 406. Since the elastic force of the positioning spring 407 is greater than the elastic force of the four return springs 503, the compressed positioning spring 407 rebounds, pushing the positioning bar 405 to slide on the inner wall of the limiting sleeve 4, so that the end of the positioning bar 405 enters the moving block 404, and the two inclined surfaces at the end of the positioning bar 405 squeeze the two clamping blocks 409 to move, so that the ends of the two clamping blocks 409 extend outward through the two sides of the moving block 404 respectively, and are plugged into the two nearby clamping grooves 408, so as to fix the position of the limiting sleeve 4, and then fix the position of the horizontal connecting profile 1 and the vertical connecting profile 2 through the two movable sleeves 301 and the two movable rods 302;

[0058] S6. Finally, through the multiple installation holes 201 on the top of the transverse connecting profile 1, the transverse connecting profile 1 can be fixedly installed at the bottom of the cantilever structure by expansion bolts, thereby providing effective support for the cantilever structure.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0060] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A building structure connection device, comprising a transverse connection profile (1) and a vertical connection profile (2), characterized in that: The end of the transverse connecting profile (1) and the vertical connecting profile (2) are equipped with two pins (101), and the end of the transverse connecting profile (1) is rotatably connected to the end of the vertical connecting profile (2) via the two pins (101), and the top of the transverse connecting profile (1) and the side of the vertical connecting profile (2) are both provided with through mounting holes (201) for connecting with the bottom of the cantilever structure and the facade of the building; An adjustment mechanism (3) is installed between the transverse connecting profile (1) and the vertical connecting profile (2), and the adjustment mechanism (3) comprises two movable sleeves (301) and two movable rods (302), the bottom ends of the two movable rods (302) are movably inserted into the inside of the two movable sleeves (301), and the bottom ends of the movable sleeves (301) and the top ends of the movable rods (302) are respectively fixedly installed with a first connection block (303) and a second connection block (304), and the first connection block (303) and the second connection block (304) are respectively rotatably connected to the outer surface of the vertical connecting profile (2) and the outer surface of the transverse connecting profile (1), and a limit position assembly is installed between the two movable sleeves (301); The limiting assembly comprises a limiting sleeve (4), the limiting sleeve (4) is assembled between two movable sleeves (301), the interiors of the two movable sleeves (301) are slidably connected with sliding blocks (401), the two sliding blocks (401) are respectively arranged at the bottom ends of the two movable rods (302), and the two ends of the limiting sleeve (4) are respectively fixedly inserted into the interiors of the two sliding blocks (401); The outer surface of the movable sleeve (301) is provided with two limit bars (402), a slide groove (403) connected to the interior of the movable sleeve (301) is provided between the outer surface of the movable sleeve (301) and the two limit bars (402), a moving block (404) is slidably connected to the inner wall of the slide groove (403), and the two moving blocks (404) are respectively provided at two ends of the limit sleeve (4); Two positioning bars (405) are movably inserted inside the limiting sleeve (4), and a push block (406) is provided at one end of the two positioning bars (405) facing each other. Both ends of the push block (406) pass through the outer surface of the limiting sleeve (4) and extend outward, and the push block (406) is slidably connected to the inside and the outer surface of the limiting sleeve (4), and a positioning spring (407) is provided between the side wall of the push block (406) and the inner wall of the limiting sleeve (4).

2. The building structure connection device according to claim 1, characterized in that: A plurality of slots (408) are provided on the inner walls on both sides of the slide groove (403); two slots (409) are slidably connected to the inner wall of the moving block (404); ends of the two slots (409) respectively pass through the two sides of the moving block (404) to extend outwards and are inserted into two of the slots (408); The end of the positioning strip (405) passes through the end of the limiting sleeve (4) and extends toward the inside of the moving block (404).

3. The building structure connection device according to claim 2, characterized in that: Both sides of the end of the positioning strip (405) inside the moving block (404) are provided with inclined surfaces, and the two inclined surfaces are respectively fitted with the two clamping blocks (409).

4. The building structure connection device according to claim 3, characterized in that: Reset grooves (5) are provided on the inner walls on both sides of the moving block (404), a baffle (501) is provided on the inner wall of the reset groove (5), two reset blocks (502) are slidably connected to the inner wall of the reset groove (5), and the two reset blocks (502) are respectively provided on the side walls of the two clamping blocks (409).

5. The building structure connection device according to claim 4, characterized in that: A return spring (503) is provided between the baffle (501) and the return block (502), the return spring (503) is in a stretched state, and the elastic force of the positioning spring (407) is greater than the elastic force of the four return springs (503).

6. A method for using a building structure connection device, based on the building structure connection device according to claim 5, characterized in that: The following steps are involved: S1. During use, the vertical connection profile (2) is firstly fitted to the building facade, and the top of the vertical connection profile (2) is abutted against the bottom of the cantilever structure. At this time, the vertical connection profile (2) can be fixedly installed on the building facade by expansion bolts through the multiple mounting holes (201) on the side of the vertical connection profile (2); S2, then the two pushing blocks (406) are pulled toward each other, compressing the two positioning springs (407) and driving the two positioning bars (405) to slide toward each other inside the limiting sleeve (4), so that the ends of the positioning bars (405) slide outward from the moving block (404), so that the ends of the positioning bars (405) no longer squeeze the two clamping blocks (409); S3, when the end of the positioning bar (405) begins to separate from the two clamping blocks (409), the four stretched return springs (503) begin to return to their original positions and contract, driving the two clamping blocks (409) to slide toward each other, thereby causing the end of the clamping block (409) to detach from the clamping slot (408) and enter the interior of the moving block (404); S4. At this time, the limiting sleeve (4) can be pulled to move upward or downward. When the limiting sleeve (4) moves upward, the movable rod (302) is pushed to move toward the outside of the movable sleeve (301), thereby pushing the transverse connecting profile (1) to rotate upward. Conversely, when the limiting sleeve (4) moves upward, the transverse connecting profile (1) is pushed to rotate downward, thereby freely adjusting the angle between the transverse connecting profile (1) and the vertical connecting profile (2) until the upper surface of the transverse connecting profile (1) can be against the bottom of the cantilever structure, which is convenient for adjustment and has low cost. S5, then release the two pushing blocks (406). Since the elastic force of the positioning spring (407) is greater than the elastic force of the four return springs (503), the compressed positioning spring (407) rebounds, pushing the positioning bar (405) to slide on the inner wall of the limiting sleeve (4), so that the end of the positioning bar (405) enters the moving block (404). The two inclined surfaces at the end of the positioning bar (405) respectively squeeze the two clamping blocks (409) to move, so that the ends of the two clamping blocks (409) respectively pass through the two sides of the moving block (404) to extend outward and are inserted into the two nearby clamping grooves (408), thereby fixing the position of the limiting sleeve (4), and then fixing the positions of the horizontal connecting profile (1) and the vertical connecting profile (2) through the two movable sleeves (301) and the two movable rods (302); S6. Finally, through the multiple mounting holes (201) on the top of the transverse connecting profile (1), the transverse connecting profile (1) can be fixedly mounted on the bottom of the cantilever structure by means of expansion bolts, thereby providing effective support for the cantilever structure.

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