A steel column footing fixing device and a method of using the same

Abstract

The application discloses a type steel column foot fixing device and a use method thereof, and belongs to the technical field of steel structure building engineering, and comprises a reinforcement cage frame, a support frame assembly, an anchor bolt positioning and adjusting assembly and a synchronous lifting mechanism, and the support frame assembly is formed into a rectangular frame through the insertion and assembly of a horizontal plate and a vertical plate. The application adopts the insertion and assembly of the horizontal plate and the vertical plate to form the rectangular support frame assembly, provides bottom support through the abutment of the inverted T-shaped support block against the reinforcement cage frame, is a whole assembly type splicing structure, can adapt to the column foot anchor bolt arrangement requirements of different sizes, is high in applicability, convenient to disassemble and assemble, is used in cooperation with a support column, a connecting rod, a sliding sleeve, a threaded steel and a lower adjusting nut, the position of the threaded steel can be changed by rotating the lower adjusting nut, the height of each corner of the support frame assembly is independently adjusted, the precise fine adjustment of the single corner levelness is realized, and in addition, the overall elevation adjustment of the support frame assembly can be completed in cooperation with the synchronous lifting mechanism, and the stability of anchor bolt pre-burying is ensured.

Description

Technical Field

[0001] This invention relates to a foundation fixing device, and more particularly to a foundation fixing device for steel columns. It also relates to a method of using the foundation fixing device, and more particularly to a method of using the foundation fixing device for steel columns, belonging to the field of steel structure building engineering technology. Background Technology

[0002] As the core load-bearing component of the vertical load-bearing system, the column base node is a key force transmission part that connects the upper steel column with the lower concrete foundation. The pre-embedded positioning accuracy of the anchor bolts and the fixing reliability of the column base directly affect the installation quality of the steel column, the overall structural stress performance and seismic safety.

[0003] Currently, in the construction of steel column foundation fixing, pre-embedded anchor bolts are commonly used as the main force transmission components. During construction, a temporary column base plate is first fixed to the top of each anchor bolt. Hard shims are then filled between the temporary column base plate and the top surface of the foundation steel reinforcement frame. By increasing or decreasing the thickness of the shims and prying the base plate, the installation height and overall level of the anchor bolts are repeatedly adjusted. After the elevation and level are verified to be qualified, the bottom ends of each anchor bolt are welded to the foundation steel reinforcement frame to achieve temporary positioning of the anchor bolts. Subsequently, foundation concrete is poured. After the concrete has initially set and reached a certain strength, the temporary column base plate is removed. Then, the steel column with the pre-welded permanent column base plate is hoisted and aligned, allowing the permanent column base plate to pass through the anchor bolts. Finally, the adjusting nut below the column base plate and the double locking nut above it are tightened in sequence to complete the elevation calibration and fastening of the steel column.

[0004] However, in actual construction, the elevation and level of the anchor bolts are adjusted by shims and manual prying, which is not only cumbersome and inaccurate, but also requires the bottom of the anchor bolts to be welded with steel reinforcement frames for positioning, making the process complicated. In addition, the column base plate is disassembled and reassembled twice, which greatly reduces the efficiency of anchor bolt assembly and prolongs the construction period.

[0005] To address this issue, a steel column anchor fixing device and its usage method were designed to optimize the above-mentioned problems. Summary of the Invention

[0006] The main objective of this invention is to provide a steel column anchor fixing device and its usage method to solve the problems mentioned in the background art.

[0007] The objective of this invention can be achieved by adopting the following technical solution: A steel column anchor fixing device includes a steel cage, a support frame assembly, an anchor bolt positioning and adjustment assembly, and a synchronous lifting mechanism; The support frame assembly is a rectangular frame formed by interlocking horizontal and vertical plates. The bottom of the support frame assembly is abutted against the top of the steel cage by inverted T-shaped support blocks. The anchor bolt positioning and adjustment assembly includes a support column, a connecting rod, a sliding sleeve, a threaded steel bar, and a lower adjusting nut. The support column is vertically slidably installed on the inverted T-shaped support block. The connecting rod is horizontally fixed to the top of the support column. Both ends of the connecting rod are vertically fixed with sliding sleeves. Threaded steel bars are vertically slidably installed inside the sliding sleeves. The top of the threaded steel bar is inserted into the support frame assembly. A lower adjusting nut is threadedly installed on the threaded steel bar, and the bottom of the lower adjusting nut fits against the top of the sliding sleeve. By rotating the lower adjusting nut, its position on the threaded steel bar can be changed, and the height of each corner of the support frame assembly can be independently adjusted to achieve fine-tuning of the horizontality. The synchronous lifting mechanism is connected between two sets of oppositely arranged inverted T-shaped support blocks, and is used to drive the two sets of columns to lift synchronously to adjust the overall elevation of the support frame assembly. The support frame assembly has multiple sets of limiting holes, and the column base anchor bolts are inserted into the limiting holes. The top of the column base anchor bolts is threaded with an upper adjusting nut.

[0008] Preferably, the horizontal plate has a first insertion hole at each end, and the vertical plate has a second insertion block at each end that matches the first insertion hole. The horizontal plate and the vertical plate are inserted together to form a rectangular support frame assembly.

[0009] Preferably, a second insertion hole is provided at each of the two ends of the bottom of the horizontal plate, and a first insertion block adapted to the second insertion hole is provided on the top of the threaded steel. The threaded steel and the horizontal plate are inserted and matched to form vertical support for the support frame assembly.

[0010] Preferably, the bottom of the inverted T-shaped support block is provided with a V-shaped groove, and the inverted T-shaped support block is engaged with the transverse steel bars of the steel cage through the V-shaped groove, so as to realize the rapid positioning of the inverted T-shaped support block on the steel cage.

[0011] Preferably, the synchronous lifting mechanism includes a slide, a rotating shaft, a cam, a through groove, an adjusting block, a slot, a rectangular connecting rod, and a locking assembly; The slide is vertically opened inside the inverted T-shaped support block. The bottom end of the support column slides into the interior of the slide. The two sets of inverted T-shaped support blocks are rotatably mounted with a rotating shaft on opposite sides. A cam is fixed at the end of the rotating shaft near the interior of the slide. The side of the inverted T-shaped support block is provided with a through groove that cooperates with the cam. The top surface of the cam abuts against the bottom end of the support column. The end of the rotating shaft away from the cam extends to the outside of the inverted T-shaped support block, and the end of the rotating shaft located outside the inverted T-shaped support block is fixed with an adjusting block. The top of the adjusting block is provided with a rectangular slot, and a rectangular connecting rod is embedded between the slots on the two sets of adjusting blocks. The locking component is located on the outside of the inverted T-shaped support block and is used to lock the rotation angle of the shaft.

[0012] Preferably, the locking assembly includes a limiting guide groove, a tapered insert, a locking groove, and a compression spring; The limiting guide groove is opened on the outer wall of the inverted T-shaped support block, the conical insert is slidably embedded in the limiting guide groove, and the locking groove is opened in a ring array at the end of the rotating shaft, and the tip of the conical insert can be fitted into the locking groove. The compression spring is located inside the limiting guide groove, with its two ends abutting against the inner wall of the limiting guide groove and the tail of the conical insert, respectively.

[0013] Preferably, a U-shaped support block is fixed to the outer side of each inverted T-shaped support block, and the adjusting block is located inside the U-shaped support block. The U-shaped support block supports the bottom of the adjusting block and at the same time plays a role in preventing the rectangular connecting rod from detaching after it has been rotated into place.

[0014] Preferably, an adjustment hole is provided at the middle position of the top of the rectangular connecting rod, and the sides of the rectangular connecting rod are provided with arc-shaped chamfers.

[0015] Preferably, it also includes a limiting mechanism, which includes a first U-shaped block and a second U-shaped block. The first U-shaped blocks are evenly distributed below the horizontal plate, and multiple sets of first U-shaped blocks correspond to the positions of the limiting holes respectively. Multiple sets of first U-shaped blocks are fixedly connected to the sliding sleeve or the connecting rod respectively. The second U-shaped block is vertically fixed at the middle position of the bottom of each set of longitudinal plates; The first U-shaped block and the second U-shaped block are respectively engaged on the outside of the column anchor bolt, and the inner sides of the first U-shaped block and the second U-shaped block are provided with rubber pads.

[0016] The present invention also provides a method for using a steel column anchor fixing device, comprising the following steps: Step 1: Assemble the support frame assembly. Connect the horizontal and vertical plates by interlocking the blocks and holes to form a rectangular support frame assembly that fits the column base size. Then, fix the two sets of inverted T-shaped support blocks to the corresponding positions on the top of the steel cage frame by engaging the bottom V-shaped grooves. Step 2: Adjust the component installation. Insert the support column vertically into the groove of the inverted T-shaped support block so that the bottom end of the support column abuts against the top surface of the cam. Insert both ends of the rectangular connecting rod into the grooves of the adjustment blocks on both sides to complete the synchronous connection of the two rotating shafts. Step 3: Single-angle horizontal fine adjustment. Insert the threaded steel bar into the sliding sleeve, and fix the top end to the horizontal plate through the first insert block. Rotate the lower adjusting nut at each corner in turn to change the height of the lower adjusting nut on the threaded steel bar, and adjust the vertical position of each corner of the support frame assembly independently until the entire support frame assembly is horizontal. Step 4: Overall elevation adjustment. Rotate the rectangular connecting rod to drive the rotating shafts and cams on both sides to rotate simultaneously. The cam lifts the support column and slides vertically along the slide groove, thereby driving the support column, sliding sleeve and support frame assembly to rise and fall synchronously. After adjusting to the design elevation, the compression spring automatically pushes the conical insert into the locking groove of the rotating shaft to complete the locking. Step 5: Anchor bolt positioning and fixing. Insert the column base anchor bolt into the limiting hole of the support frame assembly, tighten the upper adjusting nut at the top of the column base anchor bolt, and then use the first U-shaped block and the second U-shaped block of the limiting mechanism to clamp the column base anchor bolt to complete the positioning and fixing of the anchor bolt. Step 6: Pouring and assembling the steel column. Pour the concrete to the top of the lower adjusting nut. After the concrete has solidified, assemble the steel column with the welded column base plate onto the column base anchor bolt. Use the upper adjusting nut to support and level the steel column. Then, install double nuts on the top of the column base anchor bolt and tighten them. Finally, perform a second pour to completely cover the bottom of the column base plate.

[0017] The beneficial effects of this invention are as follows: This invention provides a steel column anchor fixing device and its usage method. It uses horizontal and vertical plates interlocked to form a rectangular support frame assembly. An inverted T-shaped support block abuts against the reinforcing steel cage to provide bottom support. The overall structure is a prefabricated assembly, adaptable to the arrangement requirements of column anchor bolts of different sizes. It is highly versatile and easy to assemble and disassemble. Combined with a support column, connecting rod, sliding sleeve, threaded steel bar, and lower adjusting nut, rotating the lower adjusting nut changes its position on the threaded steel bar, independently adjusting the height of each corner of the support frame assembly to achieve precise micro-adjustment of the horizontality of a single corner. Furthermore, combined with a synchronous lifting mechanism, the overall elevation of the support frame assembly can be adjusted. The adjustment mode of first leveling and then raising effectively ensures the installation position accuracy of the column anchor bolts, eliminating the need for shims and manual prying. Operation is simple, significantly reducing labor intensity. The rigid support structure also improves the deformation resistance during concrete pouring, ensuring the stability of the anchor bolt pre-embedding. The synchronous lifting mechanism consists of a slide, a rotating shaft, a cam, a through groove, an adjusting block, a slot, a rectangular connecting rod, a U-shaped support block, and a locking assembly. This mechanism can simultaneously connect the inverted T-shaped support blocks on both sides, which not only enhances the overall connection rigidity of the support system and improves the support stability, but also drives the cam to rotate through the rotating shaft by rotating the rectangular connecting rod, thus synchronously driving the lifting of the two sets of pillars. This ensures that the horizontality of the support frame assembly is consistent during the overall lifting process, the adjustment process is smooth and controllable, and the operation is convenient, effectively improving the adjustment efficiency of the anchor bolt pre-embedding and the overall structural reliability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the column base anchor bolt assembly completed according to the present invention; Figure 2 This is a front view schematic diagram of the column base anchor bolt support state according to the present invention; Figure 3 This is a schematic diagram showing the connection state between the horizontal and vertical plates of the present invention; Figure 4 This is a side sectional view of the column base anchor bolt support state of the present invention; Figure 5This is a schematic diagram of the synchronous lifting mechanism between the inverted T-shaped support blocks of the present invention; Figure 6 This is an exploded view of the column base anchor bolt support assembly of the present invention; Figure 7 This is a schematic diagram of the rectangular connecting rod end structure of the present invention; Figure 8 This is a schematic diagram of the bottom of the horizontal plate of the present invention; Figure 9 This is a side view of the inverted T-shaped support block of the present invention; Figure 10 This is a schematic diagram of the structure at both ends of the rotating shaft of the present invention.

[0019] In the diagram: 1. Reinforcing steel cage; 2. Inverted T-shaped support block; 201. V-shaped groove; 3. Support pillar; 4. Synchronous lifting mechanism; 401. Slide groove; 402. Rotating shaft; 403. Cam; 404. Through groove; 405. Adjusting block; 406. Slot; 407. Rectangular connecting rod; 408. U-shaped support block; 409. Locking assembly; 4091. Limiting guide groove; 4092. Conical insert; 4093. Locking groove; 4094. Compression spring; 5. Connecting rod; 6. Sliding sleeve; 7. Threaded steel bar; 701. First insert block; 8. Lower the adjusting nut; 9. Horizontal plate; 901. First socket; 902. Second socket; 10. Longitudinal plate; 1001. Second insert block; 11. Limiting hole; 12. Column base anchor bolt; 13. Upper adjusting nut; 14. Limiting mechanism; 1401. First U-shaped block; 1402. Second U-shaped block. Detailed Implementation

[0020] To enable those skilled in the art to more clearly understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0021] like Figures 1-10 As shown, this embodiment provides a steel column anchor fixing device, including a steel cage frame 1, a support frame assembly, an anchor bolt positioning and adjustment assembly, and a synchronous lifting mechanism 4; The support frame assembly is formed by interlocking horizontal plates 9 and vertical plates 10 to form a rectangular frame. The bottom of the support frame assembly is abutted against the top of the steel cage 1 by inverted T-shaped support blocks 2. The anchor bolt positioning and adjustment assembly includes a support column 3, a connecting rod 5, a sliding sleeve 6, a threaded steel bar 7, and a lower adjusting nut 8. The support column 3 is vertically slidably installed on the inverted T-shaped support block 2. The connecting rod 5 is horizontally fixed to the top of the support column 3. Both ends of the connecting rod 5 are vertically fixed with sliding sleeves 6. Threaded steel bars 7 are vertically slidably installed inside the sliding sleeves 6. The top of the threaded steel bars 7 is inserted into the support frame assembly. The lower adjusting nut 8 is threadedly installed on the threaded steel bars 7, and the bottom of the lower adjusting nut 8 fits against the top of the sliding sleeve 6. By rotating the lower adjusting nut 8 to change its position on the threaded steel bar 7, the height of each corner of the support frame assembly can be independently adjusted to achieve fine adjustment of the horizontality. The synchronous lifting mechanism 4 is connected between two sets of oppositely arranged inverted T-shaped support blocks 2, and is used to drive the two sets of pillars 3 to lift synchronously to adjust the overall elevation of the support frame assembly. The support frame assembly has multiple sets of limiting holes 11, and the column base anchor bolts 12 are inserted into the limiting holes 11. The top of the column base anchor bolts 12 is threaded with an upper adjusting nut 13.

[0022] During operation, the horizontal plate 9 and the vertical plate 10 are first assembled to form a support frame assembly that matches the column base size. The inverted T-shaped support block 2 is used to quickly position the support frame on the steel cage 1 to complete the foundation support. Then, the height of each corner is adjusted independently by the lower adjusting nut 8 to complete the horizontal calibration. The synchronous lifting mechanism 4 is used to realize the synchronous adjustment of the overall elevation of the support frame assembly, ensuring the stability of the horizontality of the support frame assembly during the leveling process. After that, the column base anchor bolt 12 is accurately positioned by the limiting hole 11 and the limiting mechanism 14. Finally, the concrete is poured and the steel column is assembled. There is no need to weld the anchor bolts or disassemble the temporary column base plate, which effectively simplifies the construction process and improves the anchor bolt pre-embedding accuracy and assembly efficiency.

[0023] In this embodiment, the two ends of the horizontal plate 9 are respectively provided with first insertion holes 901, and the two ends of the vertical plate 10 are provided with second insertion blocks 1001 adapted to the first insertion holes 901. The horizontal plate 9 and the vertical plate 10 are inserted to form a rectangular support frame assembly.

[0024] The horizontal plate 9 and the vertical plate 10 adopt a plug-in assembly structure of plug blocks and holes, which can flexibly adjust the overall size of the support frame assembly and adapt to the arrangement requirements of various specifications of column base anchor bolts 12; the plug-in connection does not require welding fixation, and the assembly and disassembly process is convenient.

[0025] In this embodiment, the bottom ends of the horizontal plate 9 are respectively provided with second insertion holes 902, and the top of the threaded steel 7 is provided with a first insertion block 701 that is adapted to the second insertion hole 902. The threaded steel 7 and the horizontal plate 9 are inserted and connected to form a vertical support for the support frame assembly.

[0026] The threaded steel bar 7 is quickly inserted into the second insertion hole 902 at the bottom of the horizontal plate 9 through the first insertion block 701 at the top, so that the threaded steel bar 7 and the horizontal plate 9 form a stable vertical support relationship; at the same time, the threaded steel bar 7 can slide vertically along the sliding sleeve 6, and the height of the corners of the horizontal plate 9 can be independently adjusted by cooperating with the rotation of the lower adjusting nut 8.

[0027] In this embodiment, the bottom of the inverted T-shaped support block 2 is provided with a V-shaped groove 201. The inverted T-shaped support block 2 is engaged with the transverse steel bars of the steel cage 1 through the V-shaped groove 201, so as to realize the rapid positioning of the inverted T-shaped support block 2 on the steel cage.

[0028] The V-groove 201 at the bottom of the inverted T-shaped support block 2 utilizes the guiding effect of the inclined surface to automatically adapt to the transverse steel bars of the steel cage 1 of different diameters. It can quickly snap into place without measurement and alignment, achieving stable support for the inverted T-shaped support block 2 without additional welding operations.

[0029] In this embodiment, the synchronous lifting mechanism 4 includes a slide 401, a rotating shaft 402, a cam 403, a through groove 404, an adjusting block 405, a slot 406, a rectangular connecting rod 407, and a locking assembly 409. The slide groove 401 is vertically opened inside the inverted T-shaped support block 2. The bottom end of the support column 3 slides into the interior of the slide groove 401. The two sets of inverted T-shaped support blocks 2 are rotatably mounted with rotating shafts 402 on opposite sides. The end of the rotating shaft 402 near the interior of the slide groove 401 is fixed with a cam 403. The side of the inverted T-shaped support block 2 is provided with a through groove 404 that cooperates with the cam 403. The top surface of the cam 403 abuts against the bottom end of the support column 3. The end of the rotating shaft 402 away from the cam 403 extends to the outside of the inverted T-shaped support block 2, and the end of the rotating shaft 402 located outside the inverted T-shaped support block 2 is fixed with an adjusting block 405. The top of the adjusting block 405 is provided with a rectangular slot 406, and a rectangular connecting rod 407 is embedded between the slots 406 on the two sets of adjusting blocks 405. The locking component 409 is located on the outside of the inverted T-shaped support block 2 and is used to lock the rotation angle of the rotating shaft 402.

[0030] After the rectangular connecting rod 407 is embedded in the slots 406 of the two side adjusting blocks 405, the two side rotating shafts 402 form a synchronous linkage structure. When the rectangular connecting rod 407 is rotated, the two side rotating shafts 402 can be driven to rotate synchronously at the same time. The rotating shafts 402 drive the end cams 403 to rotate synchronously. The curved lifting support column 3 of the cam 403 slides vertically along the slide groove 401, and then drives the entire support frame assembly to rise and fall synchronously through the connecting rod 5 at the top of the support column 3. The cam transmission method can realize stepless fine adjustment of the elevation, and the synchronous rise and fall of the two side supports 3 can ensure that the support frame assembly always remains horizontal during the overall elevation adjustment process, avoiding the tilt of the support frame assembly during the adjustment process, which would cause the anchor bolts to deviate.

[0031] In this embodiment, the locking component 409 includes a limiting guide groove 4091, a tapered insert 4092, a locking groove 4093, and a compression spring 4094; The limiting guide groove 4091 is opened on the outer side wall of the inverted T-shaped support block 2, the conical insert 4092 is slidably embedded in the limiting guide groove 4091, and the locking groove 4093 is opened in a ring array at the end of the rotating shaft 402. The tip of the conical insert 4092 can be fitted into the locking groove 4093. The compression spring 4094 is disposed inside the limiting guide groove 4091, and the two ends of the compression spring 4094 abut against the inner wall of the limiting guide groove 4091 and the tail of the conical insert 4092, respectively.

[0032] After the support frame assembly is adjusted to the design elevation, the elastic force of the compression spring 4094 pushes the conical insert 4092 to slide along the limiting guide groove 4091 toward the rotating shaft 402, so that the tip of the conical insert 4092 is embedded in the locking groove 4093 at the end of the rotating shaft 402. The self-locking effect of the conical surface restricts the rotation of the rotating shaft 402, preventing the cam 403 from rotating and causing the elevation of the support frame assembly to drop. Since the locking groove 4093 is in contact with the inclined surface of the conical insert 4092, when the elevation needs to be readjusted, the rectangular connecting rod 407 is rotated in the opposite direction to overcome the resistance applied to the conical insert 4092 by the compression spring 4094, which can drive the rotating shaft 402 to rotate and release the locking state.

[0033] In this embodiment, U-shaped support blocks 408 are fixed on the outer side of the inverted T-shaped support blocks 2. The adjusting block 405 is located inside the U-shaped support block 408. The U-shaped support block 408 supports the bottom of the adjusting block 405 and at the same time plays a role in preventing the rectangular connecting rod 407 from detaching after it has been rotated into place.

[0034] The U-shaped support block 408 lifts the adjusting block 405 from the bottom, which can share the vertical load borne by the rotating shaft 402 and prevent the rotating shaft 402 from bending and deforming during the adjustment process. At the same time, the side of the U-shaped support block 408 forms a limiting structure, which can limit the lateral displacement of the rectangular connecting rod 407 and prevent the rectangular connecting rod 407 from coming out of the slot 406 of the adjusting block 405 during rotation, thus ensuring the stability of synchronous transmission.

[0035] In this embodiment, an adjustment hole is provided at the middle position of the top of the rectangular connecting rod 407, and the sides of the rectangular connecting rod 407 are provided with arc-shaped chamfers.

[0036] The adjustment hole allows a pry bar to be inserted as a lever, which uses the lever principle to rotate the rectangular connecting rod 407 with less effort, reducing the labor intensity of adjusting the heavy-duty support frame assembly.

[0037] In this embodiment, a limiting mechanism 14 is also included. The limiting mechanism 14 includes a first U-shaped block 1401 and a second U-shaped block 1402. The first U-shaped blocks 1401 are evenly distributed below the horizontal plate 9. Multiple sets of first U-shaped blocks 1401 correspond to the positions of the limiting holes 11 respectively. Multiple sets of first U-shaped blocks 1401 are fixedly connected to the sliding sleeve 6 or the connecting rod 5 respectively. The second U-shaped block 1402 is vertically fixed at the middle position of the bottom of each set of longitudinal plates 10; The first U-shaped block 1401 and the second U-shaped block 1402 are respectively engaged on the outside of the column base anchor bolt 12, and the inner sides of the first U-shaped block 1401 and the second U-shaped block 1402 are provided with rubber pads.

[0038] After the column anchor bolt 12 is inserted into the limiting hole 11, the first U-shaped block 1401 and the second U-shaped block 1402 engage with the outer side of the column anchor bolt 12 from multiple directions, and together with the inner rubber pad, clamp the column anchor bolt 12, restricting the horizontal displacement and rotation of the column anchor bolt 12; the rubber pad can increase the friction, effectively prevent the column anchor bolt 12 from deviating or tilting during the concrete pouring and vibration process, and improve the anchor bolt pre-embedding accuracy.

[0039] like Figures 1-10 As shown in the figure, the usage process of the steel column anchor fixing device provided in this embodiment is as follows: Step 1: Assemble the support frame assembly. Connect the horizontal plate 9 and the vertical plate 10 by interlocking the inserts and holes to form a rectangular support frame assembly that fits the column base size. Then, fix the two sets of inverted T-shaped support blocks 2 to the corresponding positions on the top of the steel cage 1 by engaging the bottom V-shaped grooves 201. Step 2: Adjust the component installation. Insert the support column 3 vertically into the groove 401 of the inverted T-shaped support block 2, so that the bottom end of the support column 3 abuts against the top surface of the cam 403. Insert both ends of the rectangular connecting rod 407 into the slots 406 of the two side adjustment blocks 405 to complete the synchronous connection of the two side rotating shafts 402. Step 3: Single-angle horizontal fine adjustment. Insert the threaded steel bar 7 into the sliding sleeve 6, and fix the top end to the horizontal plate 9 by inserting it through the first insert block 701. Rotate the lower adjusting nut 8 at each corner in turn to change the height of the lower adjusting nut 8 on the threaded steel bar 7, and adjust the vertical position of each corner of the support frame assembly independently until the entire support frame assembly is horizontal. Step 4: Overall elevation adjustment. Rotating the rectangular connecting rod 407 synchronously drives the two rotating shafts 402 and cam 403 to rotate. The cam 403 lifts the support column 3 and slides it vertically along the slide groove 401, thereby driving the support column 3, the sliding sleeve 6 and the support frame assembly to rise and fall synchronously. After adjusting to the design elevation, the compression spring 4094 automatically pushes the conical insert 4092 into the locking groove 4093 of the rotating shaft 402 to complete the locking. Step 5: Anchor bolt positioning and fixing. Insert the column base anchor bolt 12 into the limiting hole 11 of the support frame assembly, tighten the upper adjusting nut 13 at the top of the column base anchor bolt 12, and then use the first U-shaped block 1401 and the second U-shaped block 1402 of the limiting mechanism 14 to clamp the column base anchor bolt 12 to complete the positioning and fixing of the anchor bolt. Step 6: Pouring and assembling the steel column. The first pour of concrete is made up to cover the top of the lower adjusting nut 8. After the concrete has solidified, the steel column with the welded column base plate is assembled onto the column base anchor bolt 12. The upper adjusting nut 13 is used to support and level the steel column. Then, double nuts are installed on the top of the column base anchor bolt 12 to lock it. Finally, a second pour is made to completely cover the bottom of the column base plate.

[0040] The above description is merely a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A steel column anchor fixing device, comprising a steel cage (1), a support frame assembly, an anchor bolt positioning and adjustment assembly and a synchronous lifting mechanism (4). The support frame assembly is formed by inserting and assembling horizontal plates (9) and vertical plates (10) to form a rectangular frame. The bottom of the support frame assembly abuts against the top of the steel cage (1) through an inverted T-shaped support block (2). The anchor bolt positioning adjustment assembly includes a support column (3), a connecting rod (5), a sliding sleeve (6), a threaded steel bar (7), and a lower adjusting nut (8). The support column (3) is vertically slidably installed on the inverted T-shaped support block (2). The connecting rod (5) is horizontally fixed to the top of the support column (3). Both ends of the connecting rod (5) are vertically fixed with sliding sleeves (6). Threaded steel bars (7) are vertically slidably installed inside the sliding sleeves (6). The top of the threaded steel bars (7) is inserted into the support frame assembly. The threaded steel bars (7) are threaded with lower adjusting nuts (8), and the bottom of the lower adjusting nuts (8) is in contact with the top of the sliding sleeves (6). By rotating the lower adjusting nuts (8) to change their position on the threaded steel bars (7), the height of each corner of the support frame assembly can be independently adjusted to achieve fine adjustment of the horizontality. The synchronous lifting mechanism (4) is connected between two sets of oppositely arranged inverted T-shaped support blocks (2) and is used to drive the two sets of pillars (3) to lift synchronously to adjust the overall elevation of the support frame assembly; The support frame assembly has multiple sets of limiting holes (11), and the column anchor bolts (12) are inserted into the limiting holes (11). The top of the column anchor bolts (12) is threaded with an upper adjusting nut (13).

2. The steel column anchor fixing device according to claim 1, characterized in that: The horizontal plate (9) has a first insertion hole (901) at both ends, and the vertical plate (10) has a second insertion block (1001) at both ends that is compatible with the first insertion hole (901). The horizontal plate (9) and the vertical plate (10) are connected to form a rectangular support frame assembly.

3. The steel column anchor fixing device according to claim 1, characterized in that: The bottom ends of the horizontal plate (9) are provided with second insertion holes (902), and the top of the threaded steel (7) is provided with a first insertion block (701) that is compatible with the second insertion hole (902). The threaded steel (7) and the horizontal plate (9) are inserted and connected to form a vertical support for the support frame assembly.

4. The steel column anchor fixing device according to claim 1, characterized in that: The bottom of the inverted T-shaped support block (2) is provided with a V-shaped groove (201). The inverted T-shaped support block (2) is engaged with the transverse steel bars of the steel cage (1) through the V-shaped groove (201), so as to realize the rapid positioning of the inverted T-shaped support block (2) on the steel cage.

5. The steel column anchor fixing device according to claim 1, characterized in that: The synchronous lifting mechanism (4) includes a slide (401), a rotating shaft (402), a cam (403), a through groove (404), an adjusting block (405), a slot (406), a rectangular connecting rod (407), and a locking assembly (409). The slide groove (401) is vertically opened inside the inverted T-shaped support block (2). The bottom end of the support column (3) slides into the interior of the slide groove (401). The two sets of inverted T-shaped support blocks (2) are rotatably mounted with a rotating shaft (402) on opposite sides. The end of the rotating shaft (402) near the interior of the slide groove (401) is fixed with a cam (403). The side of the inverted T-shaped support block (2) is provided with a through groove (404) that cooperates with the cam (403). The top surface of the cam (403) abuts against the bottom end of the support column (3). The end of the rotating shaft (402) away from the cam (403) extends to the outside of the inverted T-shaped support block (2), and the end of the rotating shaft (402) located outside the inverted T-shaped support block (2) is fixed with an adjusting block (405). The top of the adjusting block (405) is provided with a rectangular slot (406), and a rectangular connecting rod (407) is embedded between the slots (406) on the two sets of adjusting blocks (405). The locking component (409) is located on the outside of the inverted T-shaped support block (2) and is used to lock the rotation angle of the rotating shaft (402).

6. The steel column anchor fixing device according to claim 5, characterized in that: The locking assembly (409) includes a limiting guide groove (4091), a tapered insert (4092), a locking groove (4093), and a compression spring (4094). The limiting guide groove (4091) is opened on the outer side wall of the inverted T-shaped support block (2), the conical insert (4092) is slidably embedded in the limiting guide groove (4091), and the locking groove (4093) is opened in a ring array at the end of the rotating shaft (402). The tip of the conical insert (4092) can be inserted into the locking groove (4093). A compression spring (4094) is disposed inside the limiting guide groove (4091), and the two ends of the compression spring (4094) abut against the inner wall of the limiting guide groove (4091) and the tail of the conical insert (4092), respectively.

7. A steel column anchor fixing device according to claim 5, characterized in that: U-shaped support blocks (408) are fixed on the outer side of the inverted T-shaped support block (2). The adjusting block (405) is located inside the U-shaped support block (408). The U-shaped support block (408) supports the bottom of the adjusting block (405) and at the same time plays a role in preventing the rectangular connecting rod (407) from detaching after it has been rotated into place.

8. A steel column anchor fixing device according to claim 5, characterized in that: An adjustment hole is provided at the middle position of the top of the rectangular connecting rod (407), and the sides of the rectangular connecting rod (407) are provided with arc chamfers.

9. A steel column anchor fixing device according to claim 1, characterized in that: It also includes a limiting mechanism (14), which includes a first U-shaped block (1401) and a second U-shaped block (1402). The first U-shaped blocks (1401) are evenly distributed below the horizontal plate (9). Multiple sets of first U-shaped blocks (1401) correspond to the positions of the limiting holes (11) respectively. Multiple sets of first U-shaped blocks (1401) are fixedly connected to the sliding sleeve (6) or the connecting rod (5) respectively. The second U-shaped block (1402) is vertically fixed at the middle position of the bottom of each set of longitudinal plates (10); The first U-shaped block (1401) and the second U-shaped block (1402) are respectively engaged on the outside of the column anchor bolt (12), and the inner side of the first U-shaped block (1401) and the second U-shaped block (1402) are provided with a rubber pad layer.

10. A method of using a steel column anchor fixing device, as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Assemble the support frame assembly. Connect the horizontal plate (9) and the vertical plate (10) through the interlocking of the plug and the plug hole to assemble a rectangular support frame assembly that fits the column base size. Then, fix the two sets of inverted T-shaped support blocks (2) to the corresponding positions on the top of the steel cage frame (1) through the bottom V-shaped groove (201). Step 2: Adjust the installation of the components. Insert the support column (3) vertically into the groove (401) of the inverted T-shaped support block (2) so that the bottom end of the support column (3) abuts against the top surface of the cam (403). Insert both ends of the rectangular connecting rod (407) into the slots (406) of the two side adjustment blocks (405) to complete the synchronous connection of the two side rotating shafts (402). Step 3: Single-angle horizontal fine adjustment. Insert the threaded steel (7) into the sliding sleeve (6), and fix the top end to the horizontal plate (9) by inserting the first insert (701). Rotate the lower adjusting nut (8) at each corner in sequence to change the height of the lower adjusting nut (8) on the threaded steel (7). Adjust the vertical position of each corner of the support frame assembly independently until the support frame assembly is horizontal as a whole. Step 4: Overall elevation adjustment. Rotate the rectangular connecting rod (407) to drive the two rotating shafts (402) and cam (403) to rotate simultaneously. The cam (403) lifts the support column (3) and slides vertically along the slide groove (401), thereby driving the support column (3), the sliding sleeve (6) and the support frame assembly to rise and fall synchronously. After adjusting to the design elevation, the compression spring (4094) automatically pushes the conical insert (4092) into the locking groove (4093) of the rotating shaft (402) to complete the locking. Step 5: Anchor bolt positioning and fixing. Insert the column foot anchor bolt (12) into the limiting hole (11) of the support frame assembly, tighten the upper adjusting nut (13) at the top of the column foot anchor bolt (12), and then use the first U-shaped block (1401) and the second U-shaped block (1402) of the limiting mechanism (14) to clamp the column foot anchor bolt (12) to complete the anchor bolt positioning and fixing. Step 6: Pouring and assembling the steel column. First, pour concrete up to the top of the lower adjusting nut (8). After the concrete has solidified, assemble the steel column with the welded column base plate onto the column base anchor bolt (12). Use the upper adjusting nut (13) to support and level the steel column. Then, install double nuts on the top of the column base anchor bolt (12) to lock it. Finally, perform a second pour to completely cover the bottom of the column base plate.

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