Construction method of fixing bolt precision positioning device

Abstract

The application discloses a construction method of a fixed bolt precise positioning device, and the precise positioning device comprises a support assembly arranged outside the fixed bolt, a positioning plate connected to the top of the support assembly and connected to the upper part of the fixed bolt, and a fixing piece connected to the height direction of the fixed bolt; the support assembly is arranged to provide a stable base for the fixed bolt, and the support assembly also provides a basis for arranging the positioning plate; the positioning plate and the fixing piece are arranged to facilitate double fixing and positioning of the fixed bolt, and the stability and installation accuracy of the fixed bolt are ensured; in addition, the bolt fixing adjusting nut and the support top nut are arranged to facilitate adaptive adjustment during pouring and precise positioning during fixing of the nut.

Description

Technical Field

[0001] This invention belongs to the field of fixed bolt installation technology, and specifically relates to a construction method for a fixed bolt precision positioning device. Background Technology

[0002] In industrial and civil buildings, steel columns and equipment foundations are becoming increasingly common, and the requirements for installation precision are also rising. Consequently, the installation precision requirements for pre-embedded fixing bolts (i.e., steel structure column base bolts or equipment foundation positioning bolts) have also increased significantly. The traditional method of fixing bolts involves accurately measuring the bolts and then welding them to the steel frame to form a whole. While this method seems very reliable, in actual application, it is found that no matter how precise the positioning is during installation, the fixing bolts will always be subject to slight displacement due to factors such as concrete flow, vibration from construction machinery like vibrators, and personnel movement during concrete pouring. Even a displacement of just 1mm can cause the bolt installation precision to exceed the design requirements, making subsequent installation of steel columns or equipment foundations difficult. Therefore, an improvement is urgently needed. Summary of the Invention

[0003] This invention provides a construction method for a precision positioning device for fixing bolts, which solves technical problems such as multiple fixings, precise positioning, and adjustment during the process of fixing bolts.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A construction method for a precision positioning device for fixing bolts, the precision positioning device for fixing bolts includes a bracket assembly disposed on the outside of the fixing bolt, a positioning plate connected to the top of the bracket assembly and connected to the upper part of the fixing bolt, and a fixing member connected to the height direction of the fixing bolt.

[0006] The construction method using a precision positioning device for fixing bolts involves the following specific steps:

[0007] Step 1: Pre-construct the reinforced concrete pad under the fixing bolts, and tie the reinforcing bars after the pad has cured; tie the foundation reinforcement above the pad and tie the foundation reinforcement at the design location of the fixing bolts;

[0008] Step 2: Fabricate the bracket assembly, positioning plate, and fasteners on-site or in the factory. The dimensions of the bracket assembly should be larger than the dimensions of the foundation reinforcement. The length and width of the positioning plate should be at least larger than the outer circumference of the fixing bolts. The dimensions of the fasteners should correspond to the designed positions of the fixing bolts.

[0009] Step 3: Install the support assembly on the foundation reinforcement and around the base reinforcement; wherein, the bottom of the support column in the support assembly is placed stably on the pad layer, and the support top support rod, the top support connecting rod and the top of the support column in the support assembly are set flush with each other and measured and positioned to meet the design requirements;

[0010] Step 4: Install the positioning plate on the top of the bracket assembly. The positioning plate is leveled and fixed in height by the bracket top rod and bracket top nut. The positioning plate is pre-set with holes for fixing bolts to pass through.

[0011] Step 5: Install the fixing bolts in the main steel reinforcement according to their positions, and weld the fasteners along the height of the fixing bolts. The fasteners are rectangular frames.

[0012] Step 6: After the top of the bolt shank passes through the positioning plate and is positioned and adjusted by the bolt adjusting nut to meet the design elevation, it is fixed. During the concrete pouring process, if the displacement is found to exceed the design allowable deviation, it is promptly adjusted by reinstalling the bolt adjusting nut or positioning plate to ensure that the horizontal position and elevation of the fixing bolt are always accurate throughout the entire concrete pouring process.

[0013] Furthermore, the fixing bolt is a steel structure column base bolt or an equipment foundation positioning bolt, and the fixing bolt includes a bolt shank, a bolt adjusting nut disposed on the upper part of the bolt shank, a bolt base plate disposed on the bottom of the bolt shank, and a bolt rib plate disposed between the bolt base plate and the bolt shank.

[0014] Furthermore, the upper part of the bolt rod is provided with a threaded section, which is connected to the bolt adjusting nut; the bolt adjusting nut is larger than the hole on the positioning plate and there are two of them.

[0015] Furthermore, the bolt base plate is a rectangular plate, which is pressed onto the foundation reinforcement; and bolt ribs are spaced around the bolt base plate.

[0016] Furthermore, the support assembly includes a set of support columns arranged in a rectangular shape, support connecting rods connecting adjacent support columns, and a support top support rod located at the middle of the top of the support columns; the support top support rod, the top support connecting rod, and the top of the support columns are flush and their top surfaces are connected to the positioning plate through the support top support rod.

[0017] Furthermore, a support top rod is detachably connected to the support connecting rod at the top of the support column, and the support top rod is pressed and fixed to the positioning plate by the support top nut.

[0018] Furthermore, the support column is a rectangular tube, and the support connecting rod is an upward-opening channel steel piece; a support corner connector is provided at the lower inside corner between the support column and the support connecting rod and is connected by bolts.

[0019] The support support rod is a channel steel member or a rectangular member, and the support support rod is connected along its length between the opposite support columns.

[0020] Furthermore, the positioning plate in step four is a U-shaped plate, the size of which corresponds to the size enclosed by the support column and is adjusted and fixed by the support top rod and the support top nut.

[0021] Alternatively, the positioning plate can be a U-shaped plate, the length and width of which are smaller than the length and width of the rectangle enclosed by the support column and are set with corresponding fixing bolts; the middle of the positioning plate is attached to the top support rod of the support and suspended on both sides. Holes are pre-set on the side plates of the suspended positioning plate and are passed through the top of the bolt rod. The positioning is adjusted by fixing the bolt and adjusting nut.

[0022] Furthermore, the fixing components include a longitudinal fixing component arranged along the longitudinal direction of the rectangle enclosed by the support column and a transverse fixing component arranged perpendicular to the longitudinal fixing component;

[0023] Both the fixed longitudinal component and the fixed transverse component are right-angled components and are connected by bolts.

[0024] Furthermore, the top of the support assembly and the positioning plate are 100mm to 150mm higher than the top surface of the foundation concrete to be poured.

[0025] The beneficial effects of this invention are reflected in:

[0026] This invention provides a stable base for the fixing bolts through the bracket assembly, which also provides a foundation for the positioning plate. The positioning plate and fasteners facilitate double fixing and positioning of the fixing bolts, ensuring their stability and installation accuracy. Furthermore, the bolt adjusting nut and bracket top nut allow for adaptive adjustments during the pouring process, facilitating precise positioning during nut fixing. Other features and advantages of this invention will be set forth in the following description and will be apparent in part from the description, or may be learned by practicing the invention; the main objectives and other advantages of this invention can be realized and obtained by means of the methods particularly pointed out in the description. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the construction and installation of the precision positioning device for fixing bolts;

[0028] Figure 2 This is a 3D schematic diagram of the connection between the precision positioning device and the fixing bolts;

[0029] Figure 3 This is a side view of the connection between the precision positioning device and the fixing bolts;

[0030] Figure 4 This is a top view of the connection between the precision positioning device and the fixing bolts;

[0031] Figure 5 This is a three-dimensional schematic diagram of a precision positioning device without a positioning plate connected to fixing bolts.

[0032] Figure 6 This is a three-dimensional schematic diagram of the fasteners and fixing bolts connection;

[0033] Figure 7 This is a 3D schematic diagram of the fixing bolts;

[0034] Figure 8 This is a top view of the fixing bolt.

[0035] Reference numerals in the attached drawings: 1-pad layer, 2-fixing bolt, 21-bolt rod, 22-bolt adjusting nut, 23-bolt base plate, 24-bolt rib plate, 3-support assembly, 31-support column, 32-support connecting rod, 33-support corner connector, 34-support corner connector nut, 35-support top rod, 36-support top nut, 37-support top support rod, 4-positioning plate, 5-fixing component, 51-fixing longitudinal component, 52-fixing transverse component, 6-foundation reinforcement, 7-foundation reinforcement. Detailed Implementation

[0036] Taking the installation of column base bolts in a certain project as an example, each column base has a total of 6 column base bolts arranged in a rectangular pattern. Each column base bolt has a diameter of φ56mm, a length of 2650mm, and a weight of 51.2Kg. The allowable deviation in installation accuracy for each group of column base bolts is ±2mm, and the relative displacement deviation between the centers of the bolts in the same group is ±1mm. To ensure the installation quality of the fixing bolts, a precise positioning device for fixing bolts is used during construction.

[0037] like Figures 1 to 8 As shown, the precision positioning device for fixing bolts includes a bracket assembly 3 disposed on the outside of the fixing bolt 2, a positioning plate 4 connected to the top of the bracket assembly 3 and connected to the upper part of the fixing bolt 2, and a fixing member 5 connected to the height direction of the fixing bolt 2.

[0038] In this embodiment, the fixing bolt 2 is a steel structure column base bolt or an equipment foundation positioning bolt. The fixing bolt 2 includes a bolt rod 21, a bolt adjusting nut 22 disposed on the upper part of the bolt rod 21, a bolt base plate 23 disposed on the bottom of the bolt rod 21, and a bolt rib plate 24 disposed between the bolt base plate 23 and the bolt rod 21.

[0039] In this embodiment, the upper part of the bolt rod 21 is provided as a threaded section, which is connected to the bolt adjusting nut 22. The bolt adjusting nut 22 is larger than the hole on the positioning plate 4 and there are two of them. The bolt base plate 23 is a rectangular plate, which is pressed onto the foundation reinforcement 6. The bolt ribs 24 are spaced around the bolt base plate 23.

[0040] In this embodiment, the support assembly 3 includes a set of support columns 31 arranged in a rectangular shape, support connecting rods 32 connected between adjacent support columns 31, and a support top support rod 37 disposed at the middle position of the top of the support columns 31; the support top support rod 37, the support connecting rod 32 at the top, and the top of the support columns 31 are flush and the top surfaces of the three are connected to the positioning plate 4 through the support top rod 35.

[0041] In this embodiment, a support top rod 35 is detachably connected to the support connecting rod 32 connected to the top of the support column 31. The support top rod 35 is pressed and fixed to the positioning plate 4 by the support top nut 36. The support column 31 is a rectangular tube, and the support connecting rod 32 is an upward-opening channel steel piece. A support corner connector 33 is provided at the lower internal corner between the support column 31 and the support connecting rod 32 and is connected by bolts. The support top support rod 37 is a channel steel piece or a rectangular rod piece, and the support top support rod 37 is connected along its entire length between the opposing support columns 31.

[0042] In this embodiment, the fixing member 5 includes a longitudinal fixing member 51 arranged along the rectangular length of the support column 31 and a transverse fixing member 52 arranged perpendicular to the longitudinal fixing member 51; both the longitudinal fixing member 51 and the transverse fixing member 52 are right-angled members and are connected by bolts.

[0043] Combination Figures 1 to 8 As shown, the construction method for using a precision positioning device with fixed bolts is further explained. The specific steps are as follows:

[0044] Step 1: Pre-construct the reinforced concrete pad 1 below the fixing bolt 2. After the pad 1 has been cured, tie the reinforcing bars. Tie the foundation reinforcing bars 6 above the pad 1 and tie the foundation reinforcing bars 7 at the design location of the fixing bolt 2.

[0045] Step 2: Fabricate the bracket assembly 3, positioning plate 4, and fastener 5 on site or in the factory. The dimensions of the bracket assembly 3 are larger than the dimensions of the foundation steel reinforcement 7; the length and width of the positioning plate 4 are at least larger than the outer circumference of the fixing bolt 2; the dimensions of the fastener 5 are determined according to the design position of the fixing bolt 2.

[0046] Step 3: Install the support assembly 3 on the foundation reinforcement 6 and around the foundation reinforcement 7; wherein, the bottom of the support column 31 in the support assembly 3 is placed stably on the pad layer 1, and the support top support rod 37, the top support connecting rod 32 and the top of the support column 31 in the support assembly 3 are set flush and measured and positioned to meet the design requirements.

[0047] Step 4: Install the positioning plate 4 on the top of the bracket assembly 3. The positioning plate 4 is leveled and fixed in height by the bracket top rod 35 and the bracket top nut 36. The positioning plate 4 is pre-set with holes for fixing bolts 2 to pass through.

[0048] Among them, the top of the support assembly 3 and the positioning plate 4 are 100mm to 150mm higher than the top surface of the foundation concrete to be poured.

[0049] The positioning plate 4 in step four is a U-shaped plate. The size of the U-shaped plate is set to correspond to the size enclosed by the support column 31 and is adjusted and fixed by the support top rod 35 and the support top nut 36.

[0050] Alternatively, the positioning plate 4 can be a U-shaped plate, the length and width of which are less than the length and width of the rectangle enclosed by the support column 31 and are set with corresponding fixing bolts 2; the middle of the positioning plate 4 is attached to the top support rod 37 of the support and suspended on both sides. Holes are pre-set on the side plates of the suspended positioning plate 4 and are passed through the top of the bolt rod 21 and the positioning adjustment is performed by the bolt fixing nut 22.

[0051] Step 5: Install the main steel reinforcement according to the position of the fixing bolt 2, and weld the fastener 5 in the height direction of the fixing bolt 2. The fastener 5 is a rectangular frame.

[0052] Step 6: After the top of the bolt rod 21 of the fixing bolt 2 passes through the positioning plate 4 and is positioned and adjusted by the bolt fixing nut 22 to meet the design elevation, it is fixed. During the concrete pouring process, if the displacement is found to exceed the design allowable deviation, it is adjusted in time by reinstalling the bolt fixing nut 22 or the positioning plate 4 to ensure that the horizontal position and elevation of the fixing bolt 2 are always accurate throughout the entire concrete pouring process.

[0053] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A construction method for a precision positioning device for fixing bolts, characterized in that, The precision positioning device for fixing bolts includes a bracket assembly disposed on the outside of the fixing bolt, a positioning plate connected to the top of the bracket assembly and connected to the upper part of the fixing bolt, and a fixing member connected to the height direction of the fixing bolt; The support assembly includes a set of support columns arranged in a rectangle, support connecting rods connecting adjacent support columns, and a support top support rod located at the middle of the top of the support columns; the support top support rod, the top support connecting rod, and the top of the support columns are flush and the top surfaces of the three are connected to the positioning plate through the support top support rod. A support top rod is detachably connected to the support connecting rod at the top of the support column. The support top rod is pressed and fixed to the positioning plate by the support top nut. The positioning plate is a U-shaped plate, and its size is set to correspond to the size enclosed by the support column. It is adjusted and fixed by the support top rod and the support top nut. The construction method using a precision positioning device for fixing bolts involves the following specific steps: Step 1: Pre-construct the reinforced concrete pad under the fixing bolts, and tie the reinforcing bars after the pad has cured; tie the foundation reinforcement above the pad and tie the foundation reinforcement at the design location of the fixing bolts; Step 2: Fabricate the bracket assembly, positioning plate, and fasteners on-site or in the factory. The dimensions of the bracket assembly should be larger than the dimensions of the foundation reinforcement. The length and width of the positioning plate should be at least larger than the outer circumference of the fixing bolts. The dimensions of the fasteners should correspond to the designed positions of the fixing bolts. Step 3: Install the support assembly on the foundation reinforcement and around the base reinforcement; wherein, the bottom of the support column in the support assembly is placed stably on the pad layer, and the support top support rod, the top support connecting rod and the top of the support column in the support assembly are set flush with each other and measured and positioned to meet the design requirements; Step 4: Install the positioning plate on the top of the bracket assembly. The positioning plate is leveled and fixed in height by the bracket top rod and bracket top nut. The positioning plate is pre-set with holes for fixing bolts to pass through. Step 5: Install the fixing bolts in the main steel reinforcement according to their positions, and weld the fasteners along the height of the fixing bolts. The fasteners are rectangular frames. Step 6: After the top of the bolt shank passes through the positioning plate and is positioned and adjusted by the bolt adjusting nut to meet the design elevation, it is fixed. During the concrete pouring process, if the displacement is found to exceed the design allowable deviation, it is promptly adjusted by reinstalling the bolt adjusting nut or positioning plate to ensure that the horizontal position and elevation of the fixing bolt are always accurate throughout the entire concrete pouring process.

2. The construction method of the precision positioning device for fixing bolts as described in claim 1, characterized in that, The fixing bolt is a steel structure column base bolt or an equipment foundation positioning bolt. The fixing bolt includes a bolt shank, a bolt adjusting nut set on the upper part of the bolt shank, a bolt base plate set on the bottom of the bolt shank, and a bolt rib plate set between the bolt base plate and the bolt shank.

3. The construction method of the precision positioning device for fixing bolts as described in claim 1, characterized in that, The upper part of the bolt rod is provided with a threaded section, and the threaded section is connected to the bolt adjusting nut; the bolt adjusting nut is larger than the hole on the positioning plate and there are two of them.

4. The construction method of the precision positioning device for fixing bolts as described in claim 1, characterized in that, The bolt base plate is a rectangular plate, which is pressed onto the foundation reinforcement; and bolt ribs are spaced around the bolt base plate.

5. The construction method of the precision positioning device for fixing bolts as described in claim 1, characterized in that, The support column is a rectangular tube, and the support connecting rod is an upward-opening channel steel member; a support corner connector is provided at the lower inside corner between the support column and the support connecting rod and is connected by bolts; The support support rod is a channel steel member or a rectangular member, and the support support rod is connected along its length between the opposite support columns.

6. The construction method of the precision positioning device for fixing bolts as described in claim 1, characterized in that, The fasteners include longitudinal fasteners arranged along the longitudinal direction of the rectangle enclosed by the support columns and transverse fasteners arranged perpendicular to the longitudinal fasteners. Both the fixed longitudinal component and the fixed transverse component are right-angled components and are connected by bolts.

7. The construction method of the precision positioning device for fixing bolts as described in claim 1, characterized in that, The top of the support assembly and the positioning plate are 100mm to 150mm higher than the top surface of the foundation concrete to be poured.

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