Steel structure column foot bolt pre-burying device

Abstract

The application belongs to the technical field of foot bolt pre-burying, and discloses a steel structure column foot bolt pre-burying device, which comprises a support frame, the support frame is installed on a horizontal layer, a channel steel is installed on the top end of the support frame, a cross beam is arranged on the channel steel in a rectangular array, and a fixer is arranged on the cross beam and used for vertically hoisting a foot bolt below the fixer. The support frame comprises a base fixed on the horizontal layer by a U-shaped buckle, support rods welded on four corners of the base, and the base and the support rods are welded and reinforced by diagonal braces. The foot bolt is assembled by the fixer on the cross beam. Then, a pouring formwork is erected, and a concrete base is poured. In the process, no other welding work for the foot bolt is needed except for welding the frame which is easy to adjust subsequently. The error hidden danger caused by welding deformation is eliminated, the fixing is firm, the adjustment in assembly is facilitated, and the construction efficiency and quality are effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of pre-embedded foot bolts, in particular to a pre-embedded device for steel structure column foot bolts. Background Art

[0002] Pre-embedding anchor bolts in steel structures is a critical construction step in ensuring the stability of steel structures. For modern steel structures, pre-embedding anchor bolts plays a crucial role in ensuring stability and construction efficiency, and the quality of pre-embedding directly impacts both efficiency and quality. Currently, direct embedding is the most common method for anchor bolts. The anchor bolts are first positioned and secured before pouring. Positioning is typically performed using support welding: the bases of each anchor bolt are welded together to form a single component, and then a support bracket is installed at the bottom to provide support. However, this welding method often requires a certain amount of deformation to prevent excessive post-weld skew due to changes in the elastic modulus or stress of the material after welding. This method provides only a rough correction and is not precise. Furthermore, welding multiple anchor bolts is a tedious and challenging process. Error tolerance is low, making adjustments difficult.

[0003] Therefore, the present application proposes a steel structure column base bolt embedded device to overcome the above-mentioned defects. Summary of the Invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a pre-embedded device for steel structure column base bolts.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a steel structure column foot bolt embedding device, comprising a support frame, wherein the support frame is installed on a horizontal layer;

[0006] Channel steel, which is installed on the top of the supporting frame;

[0007] beams, which are erected on channel steel in a rectangular array;

[0008] A fixer, which is provided on the crossbeam and is used to vertically hang the foot bolts thereunder;

[0009] The support frame includes a base fixed to the horizontal layer by a U-shaped buckle, support rods welded to the four corners of the base, and the base and support rods are reinforced by welding diagonal braces;

[0010] The foot bolts are pre-installed on each cross beam through a fastener array.

[0011] Preferably, the fixer includes a holder installed on the beam, a right-angle iron slidably installed on the holder, the holder and the right-angle iron are fixed by a bayonet, the right-angle iron is straight-through up and down and a shaft sleeve is installed in its through groove, the interior of the shaft sleeve is provided with a rotating wheel and a threaded sleeve that are connected to each other, and the bottom end of the threaded sleeve is threadedly connected to the top end of the foot bolt.

[0012] Preferably, a slide rail is provided on the holder, and a slider which is slidably mounted with the slide rail is provided on the right-angle iron.

[0013] Preferably, a fault is provided in the middle of the slide rail, and the latch passes through the wing plate of the right-angle iron, the fault of the slide rail and the wing plate of the holder to be plugged in and fix the right-angle iron and the holder.

[0014] Preferably, the holder is provided with a U-shaped bayonet that is engaged with the crossbeam, a groove is provided in the middle of the crossbeam along the length direction, and the holder is fixed in the groove by bolts.

[0015] Preferably, a rubber pad is provided inside the U-shaped bayonet of the holder.

[0016] Preferably, both ends of the crossbeam are engaged in the square grooves of the channel steel through iron buckles, and then fixed to the channel steel through bolts.

[0017] Preferably, a pole spanning all beams is mounted on one of the channel steels via fixing studs.

[0018] Preferably, the crossbeam is evenly provided with scales along its length.

[0019] Preferably, a spirit level is installed on the outer side of the channel steel.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention forms an installation frame using a base, support rods, diagonal braces, and U-shaped clips. Pre-installed channel steel and crossbeams are then fastened to the support rods. Anchor bolts are assembled using the fasteners on the crossbeams. The casting formwork is then erected, and a concrete base is cast. The first layer of concrete is cast to a height that is not higher than the base of the anchor bolts. After this layer of concrete solidifies, its bottom is detached from the threaded connection between the anchor bolts. After the fasteners and anchor bolts are disassembled, the steel wires fastened to the channel steel and support rods are removed, and the channel steel and crossbeams are removed as a whole. The support rods exposed on the concrete base are then cut and removed. The formwork is then erected again on the concrete, and the concrete support layer is cast, which is then allowed to solidify. During the process, apart from welding the frame for easy subsequent adjustment, no further welding work is required for the anchor bolts. This eliminates the potential for errors caused by welding deformation, provides a secure fixation, and facilitates both assembly and adjustment, effectively improving construction efficiency and quality.

[0022] The fixture is used to thread each foot bolt separately, and the horizontal position of the fixture on the beam is adjustable. When pre-installing the foot bolt, the foot bolt is threaded upward from the lower end of the threaded sleeve, and the installation depth of each foot bolt in the threaded sleeve must be consistent. People in the relevant field can unify the depth distance by setting a limit block or other limiting methods inside the threaded sleeve. The height of the foot bolt is thus confirmed. Later, when disassembling the fixture, the threaded sleeve can be rotated relative to the foot bolt by rotating the wheel so that its thread is detached from the top of the foot bolt, completing the disassembly. The structural design is simple and ingenious, easy to operate, not prone to errors, and significantly improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the first layer of concrete base during pouring of the present invention;

[0024] Figure 2 This is a structural diagram of the concrete support layer of the present invention when being poured;

[0025] Figure 3 This is a schematic diagram of fixing the foot bolts of the present invention;

[0026] Figure 4 For the present invention Figure 3 A magnified schematic diagram of part A;

[0027] Figure 5 A top view of the structure of the present invention;

[0028] Figure 6 It is a structural diagram of the channel steel and beam of the present invention;

[0029] Figure 7 This is a schematic diagram of the disassembly of the structure of the fastener of the present invention.

[0030] In the figure: 100, support frame; 101, base; 102, support rod; 103, diagonal brace; 104, U-shaped clip; 200, channel steel; 201, benchmark; 202, fixing stud; 203, bolt; 204, iron buckle; 300, crossbeam; 301, groove; 400, fixer; 401, holder; 4011, slide rail; 4012, rubber pad; 402, right-angle iron; 4021, slider; 403, runner; 404, bushing; 405, threaded sleeve; 406, pin; 500, foot bolt; 600, level. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0032] like Figures 1 to 7 As shown, the present invention provides a steel structure column foot bolt embedded device, comprising a support frame 100, wherein the support frame 100 is installed on a horizontal layer;

[0033] The channel steel 200 is installed on the top of the support frame 100;

[0034] The crossbeams 300 are arranged in a rectangular array on the channel steel 200;

[0035] The fixing device 400 is provided on the crossbeam 300 and is used to vertically hang the foot bolt 500 thereunder;

[0036] The support frame 100 includes a base 101 fixed to a horizontal layer by a U-shaped buckle 104, support rods 102 welded to the four corners of the base 101, and diagonal braces 103 welded and reinforced between the base 101 and the support rods 102;

[0037] The foot bolts 500 are pre-installed on each crossbeam 300 through an array of fixers 400 .

[0038] The bottom of the frame is formed by welding four independent steel bars and set on the horizontal layer. The steel bars are deformed due to stress after welding, resulting in uneven bottom. U-shaped clips 104 are clamped on the end of the base 101 and nailed into the horizontal layer to level the bottom of the base 101. Then, support rods 102 and diagonal braces 103 are welded.

[0039] The crossbeam 300 is erected on the channel steel 200, and the channel steel 200 is tied to the top of the support rod 102 by steel wire. The horizontal alignment of the channel steels 200 on both sides is adjusted by measurement.

[0040] The anchor bolts 500 can be pre-installed on the beam 300 using the anchors 400, or they can be installed after the channel steel 200 and beam 300 are installed. The bottom of each anchor bolt 500 is adjusted to a uniform height and arranged in an array according to the design. After completion, the casting formwork is erected and the concrete base is poured. The first layer of concrete base is poured to a height that exceeds the base of the anchor bolts 500 and completely submerges the diagonal braces 103. After this layer of concrete solidifies, the anchors 400 on the anchor bolts 500 are separated from the top. The anchors 400 do not need to be completely removed from the beam 300, as this would be too cumbersome. Simply disconnect the bottom of the anchor bolts 500 from the threaded connection, leaving it in a position that does not interfere with the removal of the beam 300. After the anchors 400 and anchor bolts 500 are disassembled, remove the wire binding the channel steel 200 and support rods 102, and then remove the channel steel 200 and beam 300 entirely. The exposed support rods 102 on the concrete base are then cut and removed. The formwork is then erected on the concrete again, and the concrete support layer is poured and allowed to solidify.

[0041] like Figure 1-Figure 7 As shown, the fixer 400 includes a base 401 installed on the beam 300, a right-angle iron 402 slidably installed on the base 401, and the base 401 and the right-angle iron 402 are fixed by a pin 406. The right-angle iron 402 is straight-through from top to bottom and a shaft sleeve 404 is installed in its through groove. The interior of the shaft sleeve 404 is provided with a rotating wheel 403 and a threaded sleeve 405 that are connected to each other. The bottom end of the threaded sleeve 405 is threadedly connected to the top of the foot bolt 500.

[0042] The fixer 400 is used to thread and install each foot bolt 500 separately, and the horizontal position of the fixer 400 on the crossbeam 300 is adjustable. When pre-installing the foot bolt 500, the foot bolt 500 is threaded upward from the lower end of the threaded sleeve 405, and the installation depth of each foot bolt 500 in the threaded sleeve 405 must be consistent. People in the relevant field can unify the depth distance by setting a limit block or other limiting method inside the threaded sleeve 405. The height of the foot bolt 500 is thus confirmed. When disassembling the fixer 400 later, the threaded sleeve 405 can be rotated relative to the foot bolt 500 by rotating the rotating wheel 403 so that its thread is disengaged from the top of the foot bolt 500, completing the disassembly.

[0043] like Figure 4 and Figure 7 As shown, the holder 401 is provided with a slide rail 4011, and the right-angle iron 402 is provided with a slider 4021 that is slidably installed with the slide rail 4011.

[0044] The slider 4021 is slidably mounted on the slide rail 4011. After the first layer of concrete solidifies, the fixture 400 on the anchor bolt 500 can be disassembled. Since the bottom end of the anchor bolt 500 is already fixed at this point, the threaded sleeve 405 is adjusted upward relative to the anchor bolt 500 by rotating the wheel 403, thereby disengaging the fixture 400 from the top thread of the anchor bolt 500. Each fixture 400 can be adjusted in turn. After all fixtures 400 have been removed, the channel steel 200 can be untied from the support frame 100, and the channel steel 200, beam 300, and fixture 400 can be removed as a whole, followed by the secondary pre-embedded casting.

[0045] like Figure 4 and Figure 7 As shown, a fault is provided in the middle of the slide rail 4011 , and the latch 406 passes through the wing plate of the right-angle iron 402 , the fault of the slide rail 401 , and the wing plate of the holder 401 to be plugged in and fix the right-angle iron 402 to the holder 401 .

[0046] The assembly height of the right-angle iron 402 on the rubber pad 4012 is fixed, facilitating consistent height settings for each right-angle iron 402. When assembling the right-angle iron 402, the latch 406 is aligned with the through-holes on the flange of the bracket 401 and the right-angle iron 402, and then inserted into the latch 406 to secure it. A gap between the slide rails 4011 is left horizontally at the flange through-holes to allow the latch 406 to pass through. This assembly and disassembly process is quick and convenient, making it suitable for unified assembly.

[0047] like Figure 4 、 5 As shown in FIG. 7 , the holder 401 is provided with a U-shaped bayonet that engages with the crossbeam 300 . A groove 301 is provided in the middle of the crossbeam 300 along the length direction. The holder 401 is fixed in the groove 301 by bolts.

[0048] The bracket 401 features an open-loop, U-shaped bayonet design for easy disassembly and adjustment. Bolts lock into grooves 301 of the crossbeam 300 from top to bottom. The bottom plate of the U-shaped bayonet secures the crossbeam 300, while grooves 301 provide a strong positional limit. The assembly is secure and simple, and it's easily replaced, maintained, and recyclable. It allows for quick assembly during on-site construction and improved portability after disassembly.

[0049] like Figure 7 As shown, a rubber pad 4012 is provided inside the U-shaped bayonet of the holder 401.

[0050] The rubber pad 4012 acts as a cushion layer to reinforce the position of the holder 401 on the beam 300, thereby preventing the holder 401 from shifting. At the same time, the holder 401 can be firmly fastened to the beam 300, thereby increasing friction.

[0051] like Figure 1 As shown, both ends of the beam 300 are engaged in the square grooves of the channel steel 200 through iron buckles 204 and then fixed to the channel steel 200 through bolts 203.

[0052] The upper and lower surfaces of the channel steel 200 have hollowed-out square slots for the crossbeam 300 to fit through. The crossbeam 300 can be adjusted to its desired position, thereby adjusting the spacing between the front and rear rows of anchor bolts 500. Iron buckles 204 engage the square slots in the channel steel 200 to initially position the crossbeam 300, preventing misalignment between its ends on the two channel steels 200.

[0053] The iron buckle 204 is welded to the end of the beam 300 .

[0054] like Figure 5 and Figure 6 As shown, a pole 201 spanning all beams 300 is installed on one of the channel steels 200 via a fixing stud 202.

[0055] The reference rod 201 is mainly used for adjusting the position of the beam 300, that is, adjusting the distance between two adjacent beams 300. The straight edge of the beam 300 is used to align the scale, which is convenient and fast to adjust and not easy to miss.

[0056] like Figure 4 and 7 As shown, the beam 300 is evenly provided with scales along its length.

[0057] The scale marks on the crossbeam 300 serve the same purpose as the reference marks on the bar 201: they serve as a reference for adjusting the position of the fixtures 400 on the crossbeam 300, thereby aligning the front and rear fixtures 400. The scale marks on each crossbeam 300 are aligned front to back, and during adjustment, alignment is achieved by moving the fixtures 400 to the same mark.

[0058] like Figure 3 As shown, a level 600 is installed on the outer side of the channel steel 200 .

[0059] The crossbeam 300 and the channel steel 200 are fixed together as a single unit. During assembly, tilting of the sides of the unit is unacceptable. Therefore, a level 600 is installed on the side of the channel steel 200 to determine if both sides are level after installation. If not, leveling is required. This ensures that the top and bottom of each anchor bolt 500 are flush and level.

[0060] The working principle and use process of the present invention:

[0061] The bottom of the frame is formed by welding four independent steel bars and is set on the horizontal layer. The uneven bottom of the steel bars caused by stress deformation after welding is clamped on the end of the base 101 through the U-shaped clip 104 and nailed into the inside of the horizontal layer to level the bottom of the base 101. Then weld the support rod 102 and the diagonal brace 103. The crossbeam 300 is erected on the channel steel 200, and the channel steel 200 is tied to the top of the support rod 102 with steel wire. The horizontal alignment of the channel steel 200 on both sides is adjusted by measurement. The foot bolts 500 can be pre-installed on the crossbeam 300 through the fastener 400, or assembled after the channel steel 200 and the crossbeam 300 are erected. The bottom height of each foot bolt 500 is adjusted to be consistent and distributed in an array according to the design direction. After completion, the casting formwork is set up and the concrete base is cast. The casting height of the first layer of concrete base is not higher than the base of the foot bolt 500, and the diagonal brace 103 is completely submerged. After the concrete base has solidified, separate the fixture 400 from the foot bolt 500 from above. The fixture 400 does not need to be completely removed from the beam 300, as this would be too cumbersome. It is only necessary to detach the threaded connection between the bottom and the foot bolt 500 so that it does not affect the removal of the beam 300. After the fixture 400 and foot bolt 500 are disassembled, remove the steel wire tied to the channel steel 200 and the support rod 102, and then remove the channel steel 200 and the beam 300 as a whole. Then cut and remove the part of the support rod 102 that is exposed on the concrete base. Set up the formwork again on the concrete, pour the concrete support layer, and wait for it to solidify.

[0062] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0063] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A pre-embedded device for steel structure column foot bolts, characterized by: It comprises a supporting frame (100), wherein the supporting frame (100) is installed on a horizontal layer; Channel steel (200) is installed on the top of the support frame (100); Crossbeams (300) are arranged in a rectangular array on the channel steel (200); A fixer (400) is provided on the crossbeam (300) and is used to vertically hang the foot bolt (500) thereunder; The support frame (100) comprises a base (101) fixed to a horizontal layer by a U-shaped buckle (104), support rods (102) welded to the four corners of the base (101), and the base (101) and the support rods (102) are welded and reinforced by diagonal braces (103); The foot bolts (500) are pre-installed on each crossbeam (300) through an array of fixers (400); The fixer (400) includes a holder (401) mounted on the beam (300), a right-angle iron (402) slidably mounted on the holder (401), the holder (401) and the right-angle iron (402) being fixed by a bayonet (406), the right-angle iron (402) being straight-through in the top and bottom and having a shaft sleeve (404) mounted in the through groove thereof, the shaft sleeve (404) being provided with a rotating wheel (403) and a threaded sleeve (405) connected to each other inside, the bottom end of the threaded sleeve (405) being threadedly connected to the top end of the foot bolt (500); The clamping seat (401) is provided with a U-shaped bayonet that is engaged with the crossbeam (300); a groove (301) is provided in the middle of the crossbeam (300) along the length direction; and the clamping seat (401) is fixed in the groove (301) by bolts; Both ends of the crossbeam (300) are engaged in the square grooves of the channel steel (200) through iron buckles (204), and then fixed to the channel steel (200) through bolts (203).

2. A steel structure column foot bolt embedded device according to claim 1, characterized in that: A slide rail (4011) is provided on the holder (401), and a slider (4021) is provided on the right-angle iron (402) and is slidably mounted with the slide rail (4011).

3. A steel structure column foot bolt embedded device according to claim 2, characterized in that: A fault is provided in the middle of the slide rail (4011), and the latch (406) passes through the wing plate of the right-angle iron (402), the fault of the slide rail (4011) and the wing plate of the holder (401) to be plugged in and thereby fix the right-angle iron (402) and the holder (401).

4. The steel structure column foot bolt embedded device according to claim 1, characterized in that: A rubber pad (4012) is provided inside the U-shaped bayonet opening of the bayonet seat (401).

5. The steel structure column foot bolt embedded device according to claim 1, characterized in that: A pole (201) spanning all beams (300) is mounted on one of the channel steels (200) via a fixing stud (202).

6. The steel structure column foot bolt embedded device according to claim 1, characterized in that: The crossbeam (300) is evenly provided with scales along its length.

7. The steel structure column foot bolt embedded device according to claim 1, characterized in that: A level (600) is installed on the outer side of the channel steel (200).

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