A telescopic prefabricated embedded corbel installation device and method

Abstract

The present invention provides a telescopic prefabricated embedded corbel installation device and method, which relate to the field of building construction. The telescopic prefabricated embedded corbel installation device comprises an embedded device, a supporting device and a corbel assembly, wherein the embedded device is arranged at the rear end of the corbel assembly, and the supporting device is arranged in the middle of the rear end of the embedded device. The embedded device comprises an embedded shell, and the front end of the inner wall of the embedded shell is fixedly connected with an installation sleeve at a lower position, and the inner wall of the slide rod is respectively slidably connected with a plurality of protrusions, and the inner wall of the slide rod is provided with a plurality of springs in a linear array. By providing the embedded device, the beam support can be initially fixed to avoid displacement during use, and by providing the corbel assembly, the overall adaptation range of the device can be improved, and the overall stability of the device can be improved. By providing the supporting device, two limit rods are used to further fix the embedded parts, so that they form a barbed structure to avoid loosening.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a telescopic prefabricated embedded corbel installation device and method. Background Art

[0002] In the field of construction technology in the construction industry, it is often necessary to install corbels in the completed reinforced concrete structure, steel structure or steel-concrete structure as temporary support for the next stage of structural construction. There are generally three common forms of traditional corbels: one is the embedded steel plate form, that is, the steel plate with anchor bars is first embedded and attached to the structure, and then the steel plate is welded at high altitude to form the corbel; the second is the embedded conical nut form, that is, multiple conical nuts are first embedded and attached to the structure, and then the shaped corbel is installed and locked with bolts; the third is the embedded sleeve form, that is, the steel box and sleeve are first embedded and attached to the structure, and then the shaped corbel is installed and locked with a full-length pull rod.

[0003] Although the prior art installs corbels as temporary supports for the next stage of structure construction, the support cannot be well adapted to beams of different specifications, which may lead to safety hazards during long-term use. Therefore, those skilled in the art provide a telescopic prefabricated embedded corbel installation device and method to solve the problems raised in the above background technology. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the present invention provides a telescopic prefabricated embedded corbel installation device and method, which solves the problem that the support cannot adapt to beams of different specifications well, and after the embedded parts are installed, the device is prone to loosening due to long-term use.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a telescopic prefabricated embedded corbel installation device, comprising an embedded device, a supporting device and a corbel assembly, the embedded device being arranged at the rear end of the corbel assembly, the supporting device being arranged at the middle part of the rear end of the embedded device, the embedded device comprising an embedded shell, the top end and the middle part of the bottom end of the embedded shell are respectively fixedly connected to a limiting plate, a slide groove is provided in the middle part of the front end of the embedded shell, the front end of the slide groove has three second mounting holes in a linear array at the upper and lower positions respectively, two first mounting holes are respectively provided on both sides of the front end of the embedded shell, the front end of the inner side wall of the embedded shell is fixedly connected with a mounting sleeve at the lower position, the two sides of the mounting sleeve have a plurality of through holes in a linear array, the inner side wall of the through hole is slidably connected with a sliding rod, the inner side wall of the sliding rod is respectively slidably connected with a plurality of protrusions, and the inner side wall of the sliding rod has a plurality of springs in a linear array.

[0008] Preferably: the supporting device includes a limit shell, first grooves are respectively provided on both sides of the limit shell, limit rods are respectively rotatably connected to the inner side walls of the limit shell, a first screw is rotatably connected to the middle of the rear end of the inner side wall of the limit shell, a slider is threadedly connected to the side wall of the first screw, connecting rods are respectively rotatably connected to the two sides of the slider, and the front end of the limit shell is fixedly connected to the rear end of the embedded shell.

[0009] The top end of the two said first and second mounting holes is formed on the front of the two said first and second mounting holes, and the bottom end of the two said first and second mounting holes is formed on the front of the two said first and second mounting holes.

[0010] Preferably: several of the protrusions are slidingly connected to the inner walls of several through holes, six of the second mounting holes are coaxially arranged with six third mounting holes, four of the first mounting holes are coaxially arranged with four fourth mounting holes, and both ends of several of the springs are fixedly connected to several protrusions.

[0011] Preferably, the two connecting rods are rotatably connected to the side walls of the two limiting rods respectively, the two limiting rods respectively penetrate the inner side walls of the first groove, and the limiting shells are respectively communicated with the interior of the embedded shell.

[0012] Preferably: the two second screw rods are threadedly connected to the inner walls of the two threaded sleeves respectively, one end of the second bolt passes through the inner wall of the adjustment hole and is threadedly connected to the rear end of the extension plate, the inner wall of the limiting hole is slidably connected to the side wall of the sliding rod, and the two support plates are respectively adapted to the inner walls of the second groove.

[0013] Preferably: a method for installing a telescopic prefabricated embedded corbel installation device comprises the following steps:

[0014] S1. First, place the embedded shell in the reserved concrete formwork at the designated position, and leave the front end of the embedded shell empty. After the concrete solidifies, rotate the first screw. As the first screw rotates, the slider moves backward. Under the action of the connecting rod, the two limit rods expand outward to fix the embedded shell.

[0015] S2. Slide the positioning plate into the front end of the embedded housing through the slide groove so that the six second mounting holes are coaxially arranged with the six third mounting holes, and use bolts to preliminarily fix the positioning plate;

[0016] S3. According to the length of the beam placed on the upper end of the beam support, rotate the second bolt to extend the extension plate from the beam support. After the positioning plate is fixed, the four first mounting holes are matched with the four fourth mounting holes respectively, and the beam support is fixed with bolts, and the slide bar is inserted into the limit hole. After the slide bar is inserted into the installation sleeve, the slide bar is rotated 90 degrees, and the plurality of protrusions are respectively slid into the through holes to achieve complete fixation of the beam support.

[0017] S4. Insert the second screws on both sides of the extension plate into the threaded sleeve, rotate the threaded sleeve so that the two third mounting holes and the two second screws are in a straight state. After the beam is placed on the upper end surface of the beam support, screw the first bolt through the bottom end of the extension plate so that the bottom end of the support plate contacts the lower end surface of the beam, thereby achieving full support for the beam.

[0018] Working principle: first, place the embedded shell 101 in the reserved concrete formwork at the designated position, and leave the front end of the embedded shell 101 empty. After the concrete solidifies, rotate the first screw 205. As the first screw 205 rotates, the slider 206 moves backward. Under the action of the connecting rod 204, the two limit rods 203 will expand outward to fix the embedded shell 101. Slide the positioning plate 3015 into the front end of the embedded shell 101 through the slide groove 103, so that the six second mounting holes 105 and the six third mounting holes 309 are coaxially arranged. Use bolts to preliminarily fix the positioning plate 3015. According to the length of the beam placed at the upper end of the beam support 301, rotate the second bolt 3013 to extend the extension plate 304 from the beam support 301 and fix it on the positioning plate 3015. After that, the four first mounting holes 104 are matched with the four fourth mounting holes 3010 respectively, the beam support 301 is fixed with bolts, and the sliding rod 108 is inserted into the limiting hole 3012. After the sliding rod 108 is inserted into the mounting sleeve 106, the sliding rod 108 is rotated 90 degrees, and several protrusions 109 are slid into the through holes 107 respectively, so as to completely fix the beam support 301, and the second screw rods 306 on both sides of the extension plate 304 are inserted into the threaded sleeve 307, and the threaded sleeve 307 is rotated so that the two third mounting holes 309 and the two second screw rods 306 are in a straight state. After the beam is placed on the upper end surface of the beam support 301, the first bolt 305 is screwed through the bottom end of the extension plate 304 so that the bottom end of the support plate 302 contacts the lower end surface of the beam, so as to fully support the beam.

[0019] (III) Beneficial effects

[0020] The present invention provides a telescopic prefabricated embedded corbel installation device and method. It has the following beneficial effects:

[0021] 1. By setting the embedded device, place the embedded shell in the reserved concrete formwork at the designated position, and leave the front end of the embedded shell empty, insert the slide bar into the limit hole, and after the slide bar is inserted into the installation sleeve, rotate the slide bar 90 degrees, and slide several protrusions into the through holes respectively to achieve complete fixation of the beam support. The beam support can be initially fixed to avoid displacement during use.

[0022] 2. By setting the corbel assembly, slide the positioning plate into the front end of the embedded shell through the slide groove, so that the six second mounting holes and the six third mounting holes are coaxially arranged, and the positioning plate is initially fixed with bolts. According to the length of the beam placed on the upper end of the beam support, turn the second bolt to extend the extension plate from the beam support. After the positioning plate is fixed, the four first mounting holes are respectively matched with the four fourth mounting holes, and the beam support is fixed with bolts, which effectively plays a role of initial support.

[0023] 3. By arranging an extension plate at the front end of the beam support, inserting the second screws on both sides of the extension plate into the threaded sleeve, rotating the threaded sleeve, so that the two third mounting holes and the two second screws are in a straight state, after the crossbeam is placed on the upper end surface of the beam support, the first bolt is screwed through the bottom end of the extension plate, so that the bottom end of the support plate contacts the lower end surface of the crossbeam, and the crossbeam is fully supported, which can improve the overall adaptation range of the device and improve the overall stability of the device.

[0024] 4. By setting a supporting device, after the concrete solidifies, the first screw is rotated. As the first screw rotates, the slider moves backward. Under the action of the connecting rod, the two limit rods will expand outward to fix the embedded shell. After the concrete on the side wall of the beam support is completely solidified, the two limit rods can be used to further fix the embedded parts to form a barbed structure to avoid loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 It is a schematic structural diagram of the supporting device of the present invention;

[0027] Figure 3 It is a schematic structural diagram of the supporting device of the present invention;

[0028] Figure 4 It is a front structural schematic diagram of the present invention;

[0029] Figure 5 It is a rear view structural schematic diagram of the embedded housing of the present invention;

[0030] Figure 6 It is a schematic cross-sectional structural diagram of the beam support of the present invention.

[0031] Among them, 1. embedded device; 101. embedded shell; 102. limit plate; 103. slide groove; 104. first mounting hole; 105. second mounting hole; 106. mounting sleeve; 107. through hole; 108. slide rod; 109. bump; 1010. spring; 2. support device; 201. limit shell; 202. first groove; 203. limit rod; 204. connecting rod; 205. first screw; 206 , slider; 3, corbel assembly; 301, beam support; 302, support plate; 303, second groove; 304, extension plate; 305, first bolt; 306, second screw; 307, threaded sleeve; 308, mounting plate; 309, third mounting hole; 3010, fourth mounting hole; 3011, limit block; 3012, limit hole; 3013, adjustment hole; 3014, second bolt; 3015, positioning plate. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0033] Embodiment 1:

[0034] like Figure 1-6 As shown, an embodiment of the present invention provides a telescopic prefabricated embedded corbel installation device, including an embedded device 1, a supporting device 2 and a corbel assembly 3, the embedded device 1 is arranged at the rear end of the corbel assembly 3, the supporting device 2 is arranged in the middle of the rear end of the embedded device 1, the embedded device 1 includes an embedded shell 101, the top and the middle of the bottom of the embedded shell 101 are respectively fixedly connected to the limiting plate 102, a slide groove 103 is provided in the middle of the front end of the embedded shell 101, and three second mounting holes 105 are respectively arranged in a linear array at the upper and lower positions of the front end of the slide groove 103, two first mounting holes 104 are respectively provided on both sides of the front end of the embedded shell 101, and a mounting sleeve 106 is fixedly connected to the lower position of the front end of the inner wall of the embedded shell 101, and the mounting sleeve There are a number of through holes 107 in a linear array on both sides of 106, and the inner wall of the through hole 107 is slidably connected with a slide rod 108, and the inner wall of the slide rod 108 is slidably connected with a number of protrusions 109, and the inner wall of the slide rod 108 is linearly arrayed with a number of springs 1010. By setting the embedded device 1, the embedded shell 101 is placed in the reserved concrete template at a specified position, and the front end of the embedded shell 101 is left empty, and the slide rod 108 is inserted into the limiting hole 3012. After the slide rod 108 is inserted into the installation sleeve 106, the slide rod 108 is rotated 90 degrees, and the protrusions 109 are respectively slid into the through hole 107, so as to achieve complete fixation of the beam support 301, and the beam support 301 can be initially fixed to avoid displacement during use.

[0035] The supporting device 2 includes a limiting shell 201, and first grooves 202 are respectively provided on both sides of the limiting shell 201. The limiting rods 203 are rotatably connected to the inner side walls of the limiting shell 201. The middle part of the rear end of the inner side wall of the limiting shell 201 is rotatably connected to the first screw 205. The side walls of the first screw 205 are threadedly connected to the slider 206. The two sides of the slider 206 are rotatably connected to the connecting rods 204. The front end of the limiting shell 201 is fixedly connected to the rear end of the embedded shell 101. By setting the supporting device 2, after the concrete solidifies, the first screw 205 is rotated. As the first screw 205 rotates, the slider 206 moves backward. Under the action of the connecting rod 204, the two limiting rods 203 will expand outward to fix the embedded shell 101. After the concrete on the side wall of the beam support 301 is completely solidified, the two limiting rods 203 can be used to further fix the embedded parts to form a barbed structure to avoid loosening.

[0036] The bracket assembly 3 includes a positioning plate 3015, a limited position block 3011 is fixedly connected to the middle of the rear end of the positioning plate 3015, three third mounting holes 309 are linearly arrayed at the upper position of the front end of the positioning plate 3015, a beam support 301 is fixedly connected to the front end of the positioning plate 3015, a second bolt 3013 is opened in the middle of the rear end of the beam support 301, and an adjustment hole 3014 is rotatably connected to the inner side wall of the second bolt 3013, an extension plate 304 is slidably connected to the front end of the beam support 301, and a limited position hole 3012 is opened at the lower position of the front end of the beam support 301, the third mounting holes 309 are rotatably connected to the two sides of the front end of the positioning plate 3015, and the side walls of the two third mounting holes 309 are respectively threadedly connected to the threaded sleeves 307, the mounting plates 308 are fixedly connected to the rear sides of the two sides of the beam support 301, and the front ends of the two mounting plates 308 are respectively opened with fourth mounting holes 3010, and the second screws 306 are rotatably connected to the two sides of the extension plate 304. The second grooves 303 are respectively provided on the front side of the top of the extension plate 304, and the bottom ends of the inner side walls of the two second grooves 303 are rotatably connected with the first bolts 305, and the tops of the two first bolts 305 are respectively rotatably connected with the support plate 302, and the limit blocks 3011 are slidably connected with the inner side walls of the slide grooves 103. By setting the corbel assembly 3, the positioning plate 3015 is slid into the front end of the embedded shell 101 through the slide groove 103, so that the six second mounting holes 105 and the six third mounting holes 309 are coaxially arranged, and the positioning plate 3015 is preliminarily fixed by bolts, and according to the length of the beam placed on the upper end of the beam support 301, the second bolts 3013 are rotated to extend the extension plate 304 from the beam support 301, and after the positioning plate 3015 is fixed, the four first mounting holes 104 are respectively matched with the four fourth mounting holes 3010, and the beam support 301 is fixed by bolts, which effectively plays a role of preliminary support.

[0037] The plurality of protrusions 109 are respectively slidably connected to the inner side walls of the plurality of through holes 107, the six second mounting holes 105 are respectively coaxially arranged with the six third mounting holes 309, the four first mounting holes 104 are respectively coaxially arranged with the four fourth mounting holes 3010, the two ends of the plurality of springs 1010 are respectively fixedly connected to the plurality of protrusions 109, the two connecting rods 204 are respectively rotatably connected to the side walls of the two limiting rods 203, the two limiting rods 203 respectively penetrate the inner side walls of the first grooves 202, the limiting housing 201 is respectively connected to the interior of the embedded housing 101, the two second screw rods 306 are respectively threadedly connected to the inner side walls of the two threaded sleeves 307, one end of the second bolt 3013 penetrates the inner side wall of the adjusting hole 3014 and the extension plate 30 The rear end of the beam support 301 is threadedly connected, the inner wall of the limiting hole 3012 is slidably connected with the side wall of the sliding rod 108, and the two support plates 302 are respectively adapted to the inner walls of the second groove 303. By arranging an extension plate 304 at the front end of the beam support 301, the second screw rods 306 on both sides of the extension plate 304 are inserted into the threaded sleeve 307, and the threaded sleeve 307 is rotated so that the two third mounting holes 309 and the two second screw rods 306 are in a straight state. After the crossbeam is placed on the upper end surface of the beam support 301, the first bolt 305 is screwed through the bottom end of the extension plate 304 so that the bottom end of the support plate 302 contacts the lower end surface of the crossbeam, so as to achieve full support for the crossbeam, thereby improving the overall adaptation range of the device and improving the overall stability of the device.

[0038] A method for installing a telescopic prefabricated embedded corbel installation device comprises the following steps:

[0039] S1. First, the embedded housing 101 is placed in the reserved concrete formwork at the designated position, and the front end of the embedded housing 101 is left empty. After the concrete solidifies, the first screw 205 is rotated. As the first screw 205 rotates, the slider 206 moves backward. Under the action of the connecting rod 204, the two limit rods 203 will expand outward to fix the embedded housing 101.

[0040] S2. Slide the positioning plate 3015 into the front end of the embedded housing 101 through the slide groove 103, so that the six second mounting holes 105 and the six third mounting holes 309 are coaxially arranged, and use bolts to preliminarily fix the positioning plate 3015;

[0041] S3. According to the length of the beam placed on the upper end of the beam support 301, the second bolt 3013 is rotated to extend the extension plate 304 from the beam support 301. After the positioning plate 3015 is fixed, the four first mounting holes 104 are respectively matched with the four fourth mounting holes 3010, and the beam support 301 is fixed with bolts, and the slide bar 108 is inserted into the limiting hole 3012. After the slide bar 108 is inserted into the mounting sleeve 106, the slide bar 108 is rotated 90 degrees, and the plurality of protrusions 109 are respectively slid into the through holes 107, so as to completely fix the beam support 301.

[0042] S4. Insert the second screw rods 306 on both sides of the extension plate 304 into the threaded sleeve 307, rotate the threaded sleeve 307, so that the two third mounting holes 309 and the two second screw rods 306 are in a straight state, and after the beam is placed on the upper end surface of the beam support 301, screw the first bolt 305 through the bottom end of the extension plate 304, so that the bottom end of the support plate 302 contacts the lower end surface of the beam, thereby achieving full support for the beam.

[0043] 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 telescopic prefabricated embedded corbel installation device, comprising an embedded device (1), a supporting device (2) and a corbel assembly (3), wherein the embedded device (1) is arranged at the rear end of the corbel assembly (3), and the supporting device (2) is arranged at the middle of the rear end of the embedded device (1), characterized in that: The embedded device (1) comprises an embedded shell (101), the top and the middle of the bottom of the embedded shell (101) are respectively fixedly connected to a limit plate (102), a slide groove (103) is provided in the middle of the front end of the embedded shell (101), three second mounting holes (105) are respectively arranged in a linear array at the upper and lower positions of the front end of the slide groove (103), two first mounting holes (104) are respectively arranged on both sides of the front end of the embedded shell (101), a mounting sleeve (106) is fixedly connected at the lower position of the front end of the inner wall of the embedded shell (101), a plurality of through holes (107) are respectively arranged on both sides of the mounting sleeve (106) in a linear array, a sliding rod (108) is slidably connected to the inner wall of the through hole (107), a plurality of protrusions (109) are respectively slidably connected to the inner wall of the sliding rod (108), and a plurality of springs (1010) are arranged on the inner wall of the sliding rod (108) in a linear array.

2. A telescopic prefabricated embedded corbel installation device according to claim 1, characterized in that: The support device (2) comprises a limit shell (201), first grooves (202) are respectively provided on both sides of the limit shell (201), limit rods (203) are respectively rotatably connected to both sides of the inner wall of the limit shell (201), a first screw rod (205) is rotatably connected to the middle of the rear end of the inner wall of the limit shell (201), a slider (206) is threadedly connected to the side wall of the first screw rod (205), connecting rods (204) are respectively rotatably connected to both sides of the slider (206), and the front end of the limit shell (201) is fixedly connected to the rear end of the embedded shell (101).

3. A telescopic prefabricated embedded corbel installation device according to claim 1, characterized in that: The bracket assembly (3) comprises a positioning plate (3015), a limiting block (3011) is fixedly connected to the middle of the rear end of the positioning plate (3015), three third mounting holes (309) are linearly arrayed at the upper position of the front end of the positioning plate (3015), a beam support (301) is fixedly connected to the front end of the positioning plate (3015), a second bolt (3013) is provided at the middle of the rear end of the beam support (301), an adjustment hole (3014) is rotatably connected to the inner wall of the second bolt (3013), an extension plate (304) is slidably connected to the front end of the beam support (301), a limiting hole (3012) is provided at the lower position of the front end of the beam support (3011), and the third mounting holes are rotatably connected to the two sides of the front end of the positioning plate (3015) (309), the side walls of the two third mounting holes (309) are respectively threadedly connected with threaded sleeves (307), the two sides of the beam support (301) are respectively fixedly connected with mounting plates (308) on the rear side, and the front ends of the two mounting plates (308) are respectively provided with fourth mounting holes (3010), the two sides of the extension plate (304) are respectively rotatably connected with second screw rods (306), the top of the extension plate (304) is respectively provided with second grooves (303) on the front side, the bottom ends of the inner side walls of the two second grooves (303) are respectively rotatably connected with first bolts (305), the top ends of the two first bolts (305) are respectively rotatably connected with support plates (302), and the limit block (3011) is slidably connected with the inner side wall of the slide groove (103).

4. A telescopic prefabricated embedded corbel installation device according to claim 1, characterized in that: The plurality of protrusions (109) are respectively slidably connected to the inner side walls of the plurality of through holes (107); the six second mounting holes (105) are respectively coaxially arranged with the six third mounting holes (309); the four first mounting holes (104) are respectively coaxially arranged with the four fourth mounting holes (3010); and the two ends of the plurality of springs (1010) are respectively fixedly connected to the plurality of protrusions (109).

5. A telescopic prefabricated embedded corbel installation device according to claim 2, characterized in that: The two connecting rods (204) are rotatably connected to the side walls of the two limiting rods (203), respectively. The two limiting rods (203) respectively penetrate the inner wall of the first groove (202), and the limiting shell (201) is respectively connected to the interior of the embedded shell (101).

6. A telescopic prefabricated embedded corbel installation device according to claim 3, characterized in that: The two second screw rods (306) are respectively threadedly connected to the inner walls of the two threaded sleeves (307); one end of the second bolt (3013) passes through the inner wall of the adjustment hole (3014) and is threadedly connected to the rear end of the extension plate (304); the inner wall of the limiting hole (3012) is slidably connected to the side wall of the sliding rod (108); and the two support plates (302) are respectively adapted to the inner walls of the second groove (303).

7. The installation method of a telescopic prefabricated embedded corbel installation device according to claim 1, characterized in that: The following steps are involved: S1. First, the embedded shell (101) is placed in a reserved concrete template at a designated position, and the front end of the embedded shell (101) is left empty. After the concrete solidifies, the first screw rod (205) is rotated. As the first screw rod (205) rotates, the slider (206) moves backward. Under the action of the connecting rod (204), the two limit rods (203) expand outward, thereby fixing the embedded shell (101). S2, sliding the positioning plate (3015) into the front end of the embedded housing (101) through the slide groove (103), so that the six second mounting holes (105) and the six third mounting holes (309) are coaxially arranged, and preliminarily fixing the positioning plate (3015) with bolts; S3. According to the length of the beam placed on the upper end of the beam support (301), the second bolt (3013) is rotated to extend the extension plate (304) from the beam support (301). After the positioning plate (3015) is fixed, the four first mounting holes (104) are respectively matched with the four fourth mounting holes (3010), and the beam support (301) is fixed with bolts, and the slide bar (108) is inserted into the limiting hole (3012). After the slide bar (108) is inserted into the mounting sleeve (106), the slide bar (108) is rotated 90 degrees, and the plurality of protrusions (109) are respectively slid into the through holes (107), so as to achieve complete fixation of the beam support (301); S4. Insert the second screw rods (306) on both sides of the extension plate (304) into the threaded sleeve (307), rotate the threaded sleeve (307) so that the two third mounting holes (309) and the two second screw rods (306) are in a straightened state, and after the crossbeam is placed on the upper end surface of the beam support (301), screw the first bolt (305) through the bottom end of the extension plate (304) so ​​that the bottom end of the support plate (302) contacts the lower end surface of the crossbeam, thereby achieving full support for the crossbeam.

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