Precise fine adjustment support device for verticality of precast column and construction method

Abstract

The application relates to a precast column verticality precision fine adjustment supporting device and a construction method, relates to the field of precast column verticality adjustment, and comprises a supporting mechanism and an inclined support coordination mechanism. The supporting mechanism comprises a plurality of supporting pieces connected with the bottom surface of a precast column. The supporting piece comprises a pre-buried sleeve pre-buried in the bottom surface of the precast column. A supporting screw rod is threadedly connected in the pre-buried sleeve. The lower end of the supporting screw rod is rotationally connected with a supporting base. The inclined support coordination mechanism comprises adjusting supports fixedly connected with the side walls of two adjacent precast columns. Each adjusting support is connected with an elastic inclined support rod through a universal joint. The end of the elastic inclined support rod away from the precast column is connected with an adjusting support fixedly connected with the ground through a universal joint. The application has the effects of guaranteeing adjustment precision and stability.

Description

Technical Field

[0001] This application relates to the field of precast column verticality adjustment, and in particular to a support device and construction method for precise fine-tuning of precast column verticality. Background Technology

[0002] In the construction of prefabricated buildings, the verticality of precast columns is a key indicator for ensuring the overall stability and load-bearing capacity of the structure. Its installation accuracy directly affects the assembly quality of subsequent components and the safety performance of the building structure. Currently, commonly used methods for adjusting the verticality of precast columns include adjusting with diagonal bracing.

[0003] The diagonal bracing adjustment method typically utilizes an adjustable diagonal bracing system for temporary fixation and fine-tuning of the precast column. During construction, at least one diagonal brace is usually installed in each of the two vertical directions (e.g., X and Y directions) of the precast column. The top of the diagonal brace is reliably connected to the column body via channel steel clamps or special connectors, and is equipped with an adjustable threaded device (such as an adjusting screw). During adjustment, the operator applies a pushing or pulling force to the top of the column by rotating the screw, causing the column body to rotate slightly around its base, thereby correcting the verticality. The correction process is often accompanied by observation using a plumb line, straightedge, or theodolite.

[0004] However, when the verticality deviation of the precast column is large, it is difficult to guarantee the adjustment accuracy and stability by using only a single device. Summary of the Invention

[0005] To ensure adjustment accuracy and stability, this application provides a precast column verticality fine-tuning support device and construction method.

[0006] Firstly, the precast column verticality precision fine-tuning support device provided in this application adopts the following technical solution: A precast column verticality precision fine-tuning support device includes a support structure and a diagonal bracing coordination mechanism. The support structure includes multiple support members connected to the bottom surface of the precast column. Each support member includes a pre-embedded sleeve embedded in the bottom surface of the precast column. A support screw is threaded into the pre-embedded sleeve, and a support base is rotatably connected to the lower end of the support screw. The diagonal bracing coordination mechanism includes adjustable supports fixedly connected to the side walls of two adjacent precast columns. Each adjustable support is connected to a telescopic diagonal brace via a universal joint. The end of the telescopic diagonal brace away from the precast column is connected to an adjustable support fixedly connected to the ground via a universal joint.

[0007] By adopting the above technical solution, in the support components of the support mechanism, the pre-embedded sleeve embedded in the bottom surface of the precast column is threadedly connected to the support screw. By rotating the support screw, the screw length within the pre-embedded sleeve can be changed using the threaded engagement, thereby adjusting the height of the precast column and achieving initial adjustment of its verticality. In the diagonal bracing mechanism, both ends of the telescopic diagonal brace are connected to the adjusting supports via universal joints. The adjusting supports are fixed to the side wall of the precast column and the ground, respectively. By adjusting the length of the telescopic diagonal brace, the direction and magnitude of its supporting force on the precast column can be changed, further precisely adjusting the verticality of the precast column. Through the synergistic effect of the support mechanism and the diagonal bracing mechanism, the verticality of the precast column can be precisely finely adjusted, ensuring the adjustment accuracy and stability of the verticality.

[0008] Preferably, each of the support screws is threaded with a support nut, which is used to abut the bottom surface of the precast column.

[0009] By adopting the above technical solution, the support nut is threaded onto the support screw and abuts against the bottom surface of the precast column. After the support screw adjusts the height of the precast column, it can lock the position of the support screw, reduce the occurrence of rotation of the support screw due to external forces and other factors, ensure the stability of the precast column support, and help to accurately adjust the verticality of the precast column.

[0010] Preferably, the telescopic brace includes two bracing screws and a bracing sleeve threaded between the two bracing screws.

[0011] By adopting the above technical solution, the telescopic brace consists of two bracing screws and a bracing sleeve threaded between the two bracing screws. By rotating the bracing sleeve, the two bracing screws can be moved towards or away from each other using the thread transmission principle, thereby adjusting the length of the telescopic brace and achieving precise fine-tuning of the verticality of the precast column.

[0012] Preferably, both ends of the diagonal brace sleeve are threaded with locking bolts, and each locking bolt penetrates the side wall of the diagonal brace sleeve and abuts against the side wall of the corresponding diagonal brace screw.

[0013] By adopting the above technical solution, the adjustable length of the telescopic bracing rod and the bracing sleeve can be used to assist in adjusting the verticality of the precast column. At the same time, the locking bolt penetrates the side wall of the bracing sleeve and abuts against the side wall of the bracing rod, which can effectively lock the adjusted length of the telescopic bracing rod, ensure support stability, and more accurately maintain the adjusted verticality of the precast column.

[0014] Preferably, each side wall of the precast column is connected to two telescopic diagonal braces, and the ends of the two telescopic diagonal braces away from the precast column are respectively connected to the same adjusting support through universal joints.

[0015] By adopting the above technical solution, the two telescopic diagonal braces work together to apply support force to the precast column from multiple directions, enhance the support stability of the precast column, and make more precise fine-tuning of the verticality of the precast column to ensure that the verticality of the precast column installation meets the requirements.

[0016] Preferably, the number of the support members is three, and the three support members are distributed along an equilateral triangle, with each support member having the same vertical distance from the edge of the adjacent precast column.

[0017] By adopting the above technical solution, the three support members can stably support the precast column. The equilateral triangular distribution and the setting of the same vertical distance from the edge of the adjacent precast column can make the force on each support member uniform, ensuring the stability of the precast column support and the accuracy of verticality adjustment.

[0018] Preferably, a rotation angle adjustment mechanism is installed between the support screw and the support base. The rotation angle adjustment mechanism includes an adjustment disc fixed coaxially with the support screw. A limit groove is formed on the upper surface of the support base, and a hemispherical limit block is vertically slidably connected in the limit groove. A limit spring is installed between the limit block and the bottom wall of the limit groove. A plurality of snap-fit ​​grooves for aligning the limit blocks are evenly formed on the bottom surface of the adjustment disc, and each snap-fit ​​groove is provided with an adjustment component for sealing the snap-fit ​​groove.

[0019] By adopting the above technical solution, the rotation angle adjustment mechanism facilitates the planning of the required rotation angle of the support screw according to the needs of adjusting the verticality of the precast column. When the support screw rotates, the limiting block slides vertically in the limiting groove. When the limiting block is engaged in the locking groove on the bottom surface of the adjustment plate, it generates resistance. This resistance is easily perceived by the staff, thus allowing for a more accurate determination of the angle at which the support screw has completed its rotation. This facilitates the control of the angle at which the support screw needs to continue rotating, thereby improving the accuracy of the precast column verticality adjustment.

[0020] Preferably, each of the snap-fit ​​slots has a vertical through hole penetrating the adjusting plate on its bottom wall. The adjusting assembly includes an adjusting rod slidably connected to the through hole. An adjusting cap corresponding to the number of adjusting rods is rotatably connected to the upper surface of the adjusting plate. The upper end of each adjusting rod extends out of the through hole and is threadedly connected to the adjusting cap. An adjusting block is fixedly connected to the side wall of the adjusting rod. A guide groove is provided on the side wall of the through hole. The adjusting block is slidably connected to the guide groove.

[0021] By adopting the above technical solution, the adjusting cap and adjusting rod are threadedly connected. When the adjusting cap is rotated, the adjusting rod slides up and down within the through hole. Because the adjusting block is slidably connected to the guide groove, the rotation of the adjusting rod is restricted, allowing only vertical movement. The operator can rotate the adjusting cap as needed to raise or lower the adjusting rod. When the adjusting rod descends to a position where its bottom surface is parallel to the lower surface of the adjusting disc, it seals the locking groove. When the adjusting rod rises above the lower surface of the adjusting disc, the locking groove is open. By adjusting the number of locking grooves, the number of limiting blocks that can engage with the locking grooves can be changed. When the limiting blocks engage with the locking grooves, the operator will feel a certain resistance when rotating the support screw. Each rotation of the locking groove angle will produce a locking sensation. Therefore, adjusting the number of limiting blocks that can engage with the locking grooves allows the operator to adjust the angle at which the support screw can be sensed, enabling precise adjustment of the support screw's rotation as needed.

[0022] Preferably, the upper surface of the adjusting cap is provided with a mounting groove, an indicator block is slidably connected in the mounting groove, a slider is fixedly connected to the side wall of the indicator block, the side wall of the mounting groove is provided with a groove, the slider is slidably connected to the groove, the lower surface of the adjusting rod is provided with a vertically penetrating adjusting hole, a drive shaft is slidably connected in the adjusting hole, the drive shaft is fixedly connected to the indicator block, when the bottom wall of the adjusting rod is higher than the lower surface of the adjusting plate, the lower end of the drive shaft protrudes out of the adjusting rod, and the indicator block is completely retracted into the mounting groove.

[0023] By adopting the above technical solution, when the bottom wall of the adjusting rod is higher than the lower surface of the adjusting disc, the locking groove is in the open state. At this time, the lower end of the drive shaft protrudes from the adjusting rod. Since the drive shaft is fixedly connected to the indicator block, the limiting block is inserted into the locking groove, and the limiting block will push the drive shaft upward. In this way, the indicator block will move upward under the drive shaft and protrude from the upper surface of the adjusting cap. This setting allows the operator to intuitively observe the protruding state of the indicator block when the limiting block is engaged with the locking groove, thereby clearly understanding the engagement status and facilitating the operation and judgment of the rotation angle adjustment mechanism.

[0024] Secondly, the construction method of the precast column verticality precision fine-tuning support device provided in this application adopts the following technical solution: A construction method for a precast column verticality precision fine-tuning support device includes the following steps: Support point location determination and pre-embedding preparation: Based on the cross-sectional dimensions, weight, and geological conditions of the installation location of the precast column, the optimal distribution location of the bottom support points is determined through stress analysis calculation. Based on the determined support point locations, before the precast column is cast, three pre-embedded sleeves (111) are pre-embedded in an equilateral triangle at the bottom of the precast column. Bottom support assembly installation: Screw the top of the support screw (112) in the three support components (11) into the pre-embedded sleeve (111) at the bottom of the precast column respectively; Precast column hoisting and preliminary positioning: The precast column is slowly hoisted to the installation position by a crane. During the hoisting process, the straightedge is placed against the side of the precast column. The verticality is judged in real time according to the scale of the straightedge. The hoisting posture of the crane is adjusted so that the support base (113) of the three support components (11) contacts the concrete surface first. Coordinated adjustment of precast column verticality: Based on the verticality data detected by the measuring tool, determine the deviation direction and deviation value of the precast column, and adjust the support mechanism (1) and the diagonal bracing coordination mechanism (2) to adjust the verticality of the precast column.

[0025] By adopting the above technical solutions, the optimal distribution position of the bottom support points can be determined according to the actual situation of the precast column, ensuring the stability of the support; the sleeve is pre-embedded before the precast column is cast, which facilitates the installation of subsequent support components; during the hoisting process, the verticality is judged in real time and the hoisting posture is adjusted, which can achieve the initial positioning of the precast column; finally, the verticality of the precast column can be precisely finely adjusted by adjusting the support mechanism and the diagonal brace coordination mechanism according to the verticality data.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. Through the coordinated action of the support mechanism and the diagonal bracing mechanism, the verticality of the precast column can be precisely adjusted, ensuring the accuracy and stability of the verticality adjustment; 2. It can effectively lock the length of the adjusted telescopic brace to ensure support stability; 3. By adjusting the number of limit blocks that can engage with the locking slot, the angle at which the operator can sense the rotation of the support screw can be adjusted, thus enabling precise adjustment of the support screw's rotation according to requirements. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the support device as shown in Embodiment 1 of this application.

[0028] Figure 2 This is a schematic diagram illustrating the structure of the support mechanism in Embodiment 1 of this application.

[0029] Figure 3 This is a schematic diagram of the rotation angle adjustment mechanism as shown in Embodiment 2 of this application.

[0030] Figure 4 It is a manifestation Figure 3 Enlarged view of point A in the middle.

[0031] Figure 5 It is a manifestation Figure 3 Enlarged view of point B in the middle.

[0032] Explanation of reference numerals in the attached drawings: 1. Support mechanism; 11. Support component; 111. Embedded sleeve; 112. Support screw; 113. Support base; 1131. Limiting groove; 114. Support nut; 2. Diagonal brace coordination mechanism; 21. Adjustable support; 22. Telescopic diagonal brace; 221. Diagonal brace screw; 222. Diagonal brace sleeve; 3. Rotation angle adjustment mechanism; 31. Adjusting disc; 311. Snap-fit ​​groove; 312. Through hole; 313. Guide groove; 32. Limiting block; 33. Limiting spring; 4. Adjusting assembly; 41. Adjusting rod; 411. Large end section; 412. Adjusting block; 413. Adjusting hole; 42. Adjusting cap; 421. Mounting slide; 43. Indicator block; 44. Slider; 45. Indicator spring; 46. Drive shaft. Detailed Implementation

[0033] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail. Example 1

[0034] This application discloses a support device for precise fine-tuning of the verticality of precast columns. (Refer to...) Figure 1 and Figure 2 The precast column verticality fine-tuning support device includes a support mechanism 1 and a diagonal bracing coordination mechanism 2. The support mechanism 1 is connected to the bottom surface of the precast column, and the diagonal bracing coordination mechanism 2 is connected to the side wall of the adjacent precast column and the ground. The two work together to precisely fine-tune the verticality of the precast column and improve the installation accuracy of the precast column.

[0035] The support mechanism 1 includes three support components 11. Each support component 11 includes an embedded sleeve 111 pre-embedded in the bottom surface of the precast column. The embedded sleeve 111 is made of No. 45 steel, is cylindrical in shape, and has threads on its inner wall. A support screw 112 is threadedly connected to the embedded sleeve 111. The support screw 112 is also made of No. 45 steel, and the threads on the surface of the support screw 112 match the threads of the embedded sleeve 111.

[0036] The lower end of the support screw 112 is rotatably connected to a support base 113, which is generally disc-shaped and made of aluminum alloy. The support base 113 and the support screw 112 can be rotatably connected by bearings, or other structures that can achieve rotation can be used.

[0037] Each support screw 112 is threaded with a support nut 114, which is a common hexagonal nut made of metal. The support nut 114 is used to abut against the bottom surface of the precast column. By rotating the support screw 112, the effective support length of the support screw 112 can be adjusted, thereby achieving fine-tuning of the height and verticality of the precast column. The support nut 114 abuts against the bottom surface of the precast column to limit the position of the support screw 112.

[0038] The three support members 11 are distributed along an equilateral triangle, and the pre-embedded point of the pre-embedded sleeve 111 in each support member 11 is equidistant from the edge of the adjacent precast column. This distribution method enables the precast column to be subjected to uniform force in all directions, which is beneficial for more precise adjustment of the verticality of the precast column.

[0039] Reference Figure 1 and Figure 2 The diagonal bracing mechanism 2 includes a set of adjustable supports 21 fixedly connected to the side walls of two adjacent precast columns. The adjustable supports 21 are typically metal block structures, fixedly connected to the precast column side walls by bolts or other means. Two adjustable supports 21 are arranged vertically within the set, and each adjustable support 21 is connected to a telescopic diagonal brace 22 via a universal joint. The universal joint allows the telescopic diagonal brace 22 to rotate flexibly in multiple directions, facilitating angle adjustment. The end of the telescopic diagonal brace 22 furthest from the precast column is connected to the adjustable support 21 via a universal joint. Both telescopic diagonal braces 22 connected to the same side wall are connected to the same adjustable support 21 connected to the ground.

[0040] The telescopic brace 22 includes two bracing screws 221 and a bracing sleeve 222 threaded between the two bracing screws 221. Both the bracing screws 221 and the bracing sleeve 222 are made of metal. By rotating the bracing sleeve 222, the length of the telescopic brace 22 can be changed, thereby fine-tuning the verticality of the precast column. Both ends of the bracing sleeve 222 are threaded with locking bolts. Each locking bolt penetrates the side wall of the bracing sleeve 222 and abuts against the side wall of the corresponding bracing screw 221. The locking bolts are used to fix the relative position of the bracing screws 221 and the bracing sleeve 222.

[0041] This application also discloses a construction method for a precast column verticality precision fine-tuning support device, including the following steps: S1. Determining the location of support points and preparing for pre-embedding.

[0042] Based on the cross-sectional dimensions, weight, and geological conditions of the installation location of the precast column, the optimal distribution of the bottom support points was determined through stress analysis. A finite element analysis software was used to establish a mechanical model of the precast column installation. Parameters such as the self-weight, cross-sectional dimensions, material strength, and ground bearing capacity of the precast column were input to simulate the stress distribution at the bottom of the precast column under different support point distributions. Ultimately, three support points were determined to be distributed in an equilateral triangle, and the distance of each support point from the edge of the precast column was also determined. This scheme ensures uniform stress distribution at the bottom of the precast column, reducing local stress concentration. Based on the determined support point locations, before the precast column is cast, three pre-embedded sleeves 111 are pre-embedded in an equilateral triangle at the bottom of the precast column. During the pre-embedding process, it is ensured that the axis of the pre-embedded sleeves 111 is aligned with the vertical direction of the precast column.

[0043] S2, Installation of bottom support components.

[0044] Screw the tops of the support screws 112 of the three support components 11 into the pre-embedded sleeves 111 at the bottom of the precast column. Control the screwing depth to 20-25mm to ensure connection strength; after screwing, do not tighten the support nuts 114 temporarily, leaving room for fine adjustment.

[0045] S3. Precast column hoisting and preliminary positioning.

[0046] The precast column is slowly hoisted to the installation position by a crane. During the hoisting process, measuring tools are used for inspection: a straightedge is placed against the side of the precast column, and the verticality is judged in real time according to the scale of the straightedge. The lifting posture of the crane is adjusted so that the support base 113 of the three support components 11 first contacts the concrete surface. At this time, the precast column is in a "suspended support" state and has not completely landed. The verticality deviation of the precast column is initially controlled to be within 5mm.

[0047] S4. Coordinate the adjustment of the verticality of precast columns.

[0048] Based on the verticality data detected by the measuring tools, the deviation direction and deviation value of the precast column are determined.

[0049] When the verticality deviation is small (deviation value ≤ 2mm), fine-tuning is only performed by adjusting the bottom support components: For the direction of deviation, rotate the support screw 112 at the corresponding position. When the support screw 112 is gradually screwed into the pre-embedded sleeve 111, the corresponding side of the precast column is lowered; when the support screw 112 is gradually screwed out of the pre-embedded sleeve 111, the corresponding side of the precast column is raised. The screwing depth of the support screw 112 of the three bottom support components is fine-tuned one by one, and the amount of fine-tuning is controlled within 0.5mm each time, until the verticality error of the precast column is ≤ the specification requirement. When the verticality deviation is large (deviation value > 2mm), the support mechanism 1 and the diagonal bracing coordination mechanism 2 are used for coordinated adjustment: First, the precast column is coarsely adjusted by adjusting the length of the diagonal bracing rod of the diagonal bracing coordination mechanism 2 to control the verticality deviation within 2mm; then, the support screw 112 of the support mechanism 1 is adjusted for fine adjustment. During the adjustment process, the verticality change of the precast column is monitored in real time to reduce the occurrence of column displacement due to single adjustment; when adjusting in tandem, it is necessary to ensure that the force on the support mechanism 1 and the jacking force of the diagonal bracing coordination mechanism 2 are matched. Example 2

[0050] This application discloses a support device for precise fine-tuning of the verticality of precast columns. The difference from Embodiment 1 is that, referring to... Figure 3 and Figure 4 A rotation angle adjustment mechanism 3 is installed between the support screw 112 and the support base 113.

[0051] The rotation angle adjustment mechanism 3 includes an adjustment disc 31 that is coaxially fixed with the support screw 112. The adjustment disc 31 is circular, and the bottom surface of the adjustment disc 31 contacts the upper surface of the support base 113.

[0052] Reference Figure 4 and Figure 5 A limiting groove 1131 is formed on the upper surface of the support base 113. The limiting groove 1131 is a circular groove, and a hemispherical limiting block 32 is vertically slidably connected inside it. The limiting block 32 is made of metal, and a limiting spring 33 is installed between it and the bottom wall of the limiting groove 1131. The upper end of the limiting spring 33 is fixedly connected to the limiting block 32, and the lower end is fixedly connected to the bottom wall of the limiting groove 1131.

[0053] The bottom surface of the adjusting plate 31 is provided with multiple locking grooves 311 for aligning with the limiting groove 1131 and engaging with the limiting block 32. The multiple locking grooves 311 are evenly distributed around the axis of the adjusting plate 31, and each locking groove 311 is provided with an adjusting component 4 for sealing the locking groove 311.

[0054] Each snap-fit ​​groove 311 has a through hole 312 extending vertically upward through the adjusting disc 31 on its bottom wall. The adjusting assembly 4 includes an adjusting rod 41 that is slidably connected to the through hole 312. The inner diameter of the through hole 312 is smaller than the inner diameter of the snap-fit ​​groove 311. The lower end of the adjusting rod 41 has a large end section 411 that is slidably connected to the snap-fit ​​groove 311, and the diameter of the large end section 411 is equal to the inner diameter of the snap-fit ​​groove 311.

[0055] An adjusting cap 42, corresponding to the number of adjusting rods 41, is rotatably connected to the upper surface of the adjusting disc 31. The adjusting cap 42 is circular and has anti-slip texture on its outer surface. The upper end of each adjusting rod 41 extends out of the through hole 312 and is threadedly connected to the adjusting cap 42. An adjusting block 412 is fixedly connected to the side wall of the adjusting rod 41. A guide groove 313 is provided on the side wall of the through hole 312. The adjusting block 412 is vertically slidably connected to the guide groove 313, which ensures that the adjusting rod 41 will not rotate when moving up and down.

[0056] Rotating the adjusting cap 42 will cause the adjusting rod 41 to rise and fall vertically. When the adjusting rod 41 descends until the large end section 411 contacts the support base 113, the large end section 411 completely blocks the snap-fit ​​groove 311. This allows the number of blocked snap-fit ​​grooves 311 to be adjusted as needed, thereby changing the number of limit blocks 32 that can snap into the snap-fit ​​groove 311.

[0057] Reference Figure 4 and Figure 5The upper surface of the adjusting cap 42 has a mounting groove 421. An indicator block 43 is vertically slidably connected within the mounting groove 421. The sidewall of the indicator block 43 is coated with a bright color, such as red. Two sliders 44 are fixedly connected to the sidewall of the indicator block 43. The sidewall of the mounting groove 421 has two grooves. Each slider 44 is slidably connected to its corresponding groove. An indicator spring 45 is fixedly connected between each slider 44 and the corresponding sidewall of the groove.

[0058] An adjustment hole 413 is provided on the lower surface of the adjustment rod 41, which runs vertically through the adjustment rod 41. A drive shaft 46 is slidably connected in the adjustment hole 413, and the upper end of the drive shaft 46 is fixedly connected to the indicator block 43. When the bottom wall of the adjustment rod 41 is higher than the lower surface of the adjustment disk 31, the locking groove 311 is in the open state, the lower end of the drive shaft 46 protrudes from the adjustment rod 41, and the bottom surface of the drive shaft 46 is flush with the bottom surface of the adjustment disk 31. The indicator block 43 is completely retracted into the mounting groove 421, and the top surface of the indicator block 43 is flush with the top surface of the adjustment cap 42.

[0059] When the limiting block 32 is aligned with the locking groove 311, the limiting block 32 is pushed upward by the force of the limiting spring 33 and inserts into the locking groove 311. At this time, the limiting block 32 pushes the drive shaft 46 and the indicator block 43 upward, and the upper end of the indicator block 43 protrudes out of the adjusting cap 42 for easy observation by the operator. When the adjusting screw is rotated to drive the adjusting disc 31 to rotate, the limiting block 32 is gradually retracted into the limiting groove 1131 under pressure, and the indicator block 43 is retracted into the adjusting cap 42 under the force of the indicating spring 45.

[0060] The implementation principle of the precast column verticality fine-tuning support device in this application embodiment is as follows: Rotating the support screw 112 adjusts the verticality of the precast column. During rotation, the support screw 112 drives the adjusting disc 31 to rotate. When the limiting block 32 aligns with a corresponding open locking groove 311, the limiting block 32, under the force of the limiting spring 33, inserts upward into the locking groove 311. At this time, the limiting block 32 pushes the drive shaft 46 and the indicator block 43 upward, with the upper end of the indicator block 43 protruding from the adjusting cap 42, facilitating observation of the rotation angle of the support screw 112. As the adjusting screw continues to rotate, driving the adjusting disc 31 to rotate, the limiting block 32 gradually retracts into the limiting groove 1131 under pressure, and the indicator block 43 retracts into the adjusting cap 42 under the force of the indicating spring 45, until the limiting block 32 inserts into the next locking groove 311. Thus, the next indicator block 43 protrudes upward from the corresponding adjusting cap 42.

[0061] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A precast column verticality precision fine-tuning support device, characterized in that, The system includes a support structure (1) and a diagonal bracing coordination mechanism (2). The support structure includes multiple support members (11) connected to the bottom surface of the precast column. Each support member (11) includes a pre-embedded sleeve (111) embedded in the bottom surface of the precast column. The pre-embedded sleeve (111) is internally threaded with a support screw (112). The lower end of the support screw (112) is rotatably connected to a support base (113). The diagonal bracing coordination mechanism (2) includes an adjustable support (21) fixedly connected to the side walls of two adjacent precast columns. Each adjustable support (21) is connected to a telescopic diagonal brace (22) via a universal joint. The end of the telescopic diagonal brace (22) away from the precast column is connected to an adjustable support (21) fixedly connected to the ground via a universal joint.

2. The precast column verticality precision fine-tuning support device according to claim 1, characterized in that, Each of the support screws (112) is threaded with a support nut (114), which is used to abut the bottom surface of the precast column.

3. The precast column verticality precision fine-tuning support device according to claim 1, characterized in that, The telescopic diagonal brace (22) includes two diagonal bracing screws (221) and a diagonal bracing sleeve (222) threaded between the two diagonal bracing screws (221).

4. The precast column verticality precision fine-tuning support device according to claim 3, characterized in that, Both ends of the diagonal bracing sleeve (222) are threaded with locking bolts, and each locking bolt penetrates the side wall of the diagonal bracing sleeve (222) and abuts against the side wall of the corresponding diagonal bracing screw (221).

5. The precast column verticality precision fine-tuning support device according to claim 1, characterized in that, Each side wall of the precast column is connected to two telescopic diagonal braces (22), and the ends of the two telescopic diagonal braces (22) away from the precast column are respectively connected to the same adjusting support (21) through universal joints.

6. A precast column verticality precision fine-tuning support device according to any one of claims 1-5, characterized in that, The number of the support members (11) is three, and the three support members (11) are distributed along an equilateral triangle, with each support member (11) having the same vertical distance from the edge of the adjacent precast column.

7. The precast column verticality precision fine-tuning support device according to claim 1, characterized in that, A rotation angle adjustment mechanism (3) is installed between the support screw (112) and the support base (113). The rotation angle adjustment mechanism (3) includes an adjustment plate (31) fixed coaxially with the support screw (112). A limit groove (1131) is opened on the upper surface of the support base (113). A hemispherical limit block (32) is vertically slidably connected in the limit groove (1131). A limit spring (33) is installed between the limit block (32) and the bottom wall of the limit groove (1131). A plurality of snap-fit ​​grooves (311) for aligning the limit block (32) are evenly opened on the bottom surface of the adjustment plate (31). An adjustment component (4) for sealing the snap-fit ​​groove (311) is provided in each snap-fit ​​groove (311).

8. The precast column verticality precision fine-tuning support device according to claim 7, characterized in that, Each of the snap-fit ​​slots (311) has a vertical through hole (312) through the adjusting plate (31) on its bottom wall. The adjusting assembly (4) includes an adjusting rod (41) that is slidably connected to the through hole (312). An adjusting cap (42) corresponding to the number of adjusting rods (41) is rotatably connected to the upper surface of the adjusting plate (31). The upper end of each adjusting rod (41) extends out of the through hole (312) and is threadedly connected to the adjusting cap (42). An adjusting block (412) is fixedly connected to the side wall of the adjusting rod (41). A guide groove (313) is provided on the side wall of the through hole (312). The adjusting block (412) is slidably connected to the guide groove (313).

9. A precast column verticality precision fine-tuning support device according to claim 8, characterized in that, The upper surface of the adjusting cap (42) is provided with an installation groove (421). An indicator block (43) is slidably connected in the installation groove (421). A slider (44) is fixedly connected to the side wall of the indicator block (43). The side wall of the installation groove (421) is provided with a groove. The slider (44) is slidably connected to the groove. The lower surface of the adjusting rod (41) is provided with an adjusting hole (413) that penetrates the adjusting rod (41). A drive shaft (46) is slidably connected in the adjusting hole (413). The drive shaft (46) is fixedly connected to the indicator block (43). When the bottom wall of the adjusting rod (41) is higher than the lower surface of the adjusting plate (31), the lower end of the drive shaft (46) protrudes out of the adjusting rod (41), and the indicator block (43) is completely retracted into the installation groove (421).

10. A construction method for a precast column verticality precision fine-tuning support device according to any one of claims 6, characterized in that, Includes the following steps: Support point location determination and pre-embedding preparation: Based on the cross-sectional dimensions, weight, and geological conditions of the installation location of the precast column, the optimal distribution location of the bottom support points is determined through stress analysis calculation. Based on the determined support point locations, before the precast column is cast, three pre-embedded sleeves (111) are pre-embedded in an equilateral triangle at the bottom of the precast column. Bottom support assembly installation: Screw the top of the support screw (112) in the three support components (11) into the pre-embedded sleeve (111) at the bottom of the precast column respectively; Precast column hoisting and preliminary positioning: The precast column is slowly hoisted to the installation position by a crane. During the hoisting process, the straightedge is placed against the side of the precast column. The verticality is judged in real time according to the scale of the straightedge. The hoisting posture of the crane is adjusted so that the support base (113) of the three support components (11) contacts the concrete surface first. Coordinated adjustment of precast column verticality: Based on the verticality data detected by the measuring tool, determine the deviation direction and deviation value of the precast column, and adjust the support mechanism (1) and the diagonal bracing coordination mechanism (2) to adjust the verticality of the precast column.

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