Construction method of accurate positioning device for fixing bolts

Abstract

The invention discloses a construction method of a precise positioning device for a fixing bolt. The precise positioning device comprises a support assembly arranged on the outer side of the fixing bolt, a positioning plate connected to the top of the support assembly and connected to the upper portion of the fixing bolt, and a fixing piece connected to the height direction of the fixing bolt. Through the arrangement of the support assembly, a stable base is provided for fixing bolts, and the support assembly further provides a foundation for the arrangement of the positioning plate; through the arrangement of the positioning plate and the fixing piece, double fixing and positioning of the fixing bolt are facilitated, and the stability and the installation accuracy of the fixing bolt are guaranteed; in addition, through the arrangement of a bolt fixing and adjusting nut and a support top nut, adaptive adjustment can be conveniently conducted in the pouring process, and accurate positioning in the nut fixing process is facilitated.

Description

Technical Field

[0001] The present invention belongs to the technical field of fixing bolt installation, and in particular relates to a construction method of a fixing bolt precision positioning device. Background Art

[0002] In industrial and civil buildings, there are more and more steel columns and equipment foundations, and the installation accuracy requirements are getting higher and higher. The installation accuracy requirements for the pre-buried fixing bolts in civil engineering (i.e., steel structure column foot bolts or equipment foundation positioning bolts) are also greatly improved accordingly. The traditional fixing method of fixing bolts is to accurately measure the fixing bolts and weld them to the steel frame as a whole. This method seems very reliable, but in actual application, it is found that no matter how accurate the positioning is during installation, during the concrete pouring process, due to factors such as concrete flow, vibration of construction machinery such as vibrators, and movement of people, the fixing bolts will always be slightly displaced by the vibration of the above factors. As long as this displacement is 1mm, the bolt installation accuracy will exceed the design requirements, making it difficult to install the steel column or equipment foundation in the future. Therefore, improvement is urgently needed. Summary of the Invention

[0003] The present invention provides a construction method for a precise positioning device for fixing bolts, which is used to solve technical problems such as multiple fixation, precise positioning and in-process adjustment of fixing bolts.

[0004] To achieve the above object, the present invention adopts the following technical solutions: A construction method of a precise positioning device for a fixing bolt, the precise positioning device for a fixing bolt comprising a bracket assembly disposed outside the fixing bolt, a positioning plate connected to the top of the bracket assembly and connected to the upper portion of the fixing bolt, and a fixing piece connected in a height direction of the fixing bolt; The construction method of using the fixed bolt precise positioning device is as follows: Step 1: Pre-construct the reinforced concrete cushion layer below the fixing bolts, and tie the steel bars after the cushion layer is cured; tie the cap steel bars above the cushion layer and tie the foundation steel bars corresponding to the designed fixing bolts; Step 2: Make the bracket assembly, positioning plate and fixing parts on site or in the factory. The size of the bracket assembly should be larger than the size of the foundation steel bar; the length and width of the positioning plate should be at least larger than the outer circumference of the fixing bolt; the size of the fixing part should be determined according to the design position of the fixing bolt; Step 3: Install the bracket assembly on the base reinforcement and around the foundation reinforcement; the bottom of the bracket column in the bracket assembly is placed stably on the cushion layer, and the bracket top rod, the top bracket connecting rod and the top of the bracket column in the bracket assembly are set flush and measured and positioned to meet the design requirements; Step four, install the positioning plate on the top of the support assembly, and the positioning plate is horizontally leveled and fixed in height by the support top rod and the support top nut, and the positioning plate is provided with a hole for the fixed bolt to pass through in advance; Step five, install the fixed bolt in the main body steel bar according to the position of the fixed bolt, and weld a fixing piece in the height direction of the fixed bolt, which is a rectangular frame; Step six, after the bolt rod top of the fixed bolt passes through the positioning plate and is positioned and adjusted by the bolt fixing and adjusting nut, it is fixed when it meets the design elevation. During the concrete pouring process, if the displacement exceeds the design allowable deviation, the positioning plate is reinstalled and adjusted in time through the bolt fixing and adjusting nut or the positioning plate, so that the horizontal position and elevation of the fixed bolt are always accurate during the entire concrete pouring process.

[0005] Further, the fixed bolt is a steel column foot bolt or an equipment foundation positioning bolt, and the fixed bolt comprises a bolt rod, a bolt fixing and adjusting nut arranged at the upper part of the bolt rod, a bolt bottom plate arranged at the bottom of the bolt rod, and a bolt rib plate arranged between the bolt bottom plate and the bolt rod.

[0006] Further, the upper part of the bolt rod is provided as a threaded segment, and the threaded segment corresponds to the bolt fixing and adjusting nut; the bolt fixing and adjusting nut is larger than the hole in the positioning plate and is provided with two.

[0007] Further, the bolt bottom plate is a rectangular plate, and the bolt bottom plate is crimped to the bearing platform steel bar; and the bolt rib plate is arranged at intervals around the bolt bottom plate.

[0008] Further, the support assembly comprises a group of support columns arranged in a rectangular distribution, support connecting rods connected between adjacent support columns, and a support top rod arranged at the middle position of the top of the support column; the support top rod, the support connecting rod at the top, and the top of the support column are arranged in a flush manner, and the top surfaces of the three are connected by the support top rod and the positioning plate.

[0009] Further, the support connecting rod connected to the top of the support column is detachably connected with the support top rod, and the support top rod is crimped and fixed to the positioning plate through the support top nut.

[0010] Further, the support column is a rectangular pipe, and the support connecting rod is an upwardly open channel steel; a support corner connecting piece is arranged at the lower corner between the support column and the support connecting rod and is connected by a bolt; The support top rod is a channel steel or a rectangular rod, and the support top rod is connected between the opposite support columns.

[0011] Further, the positioning plate in step four is a back-shaped plate, and the size of the back-shaped plate corresponds to the size enclosed by the support column and is adjusted and fixed by the support top rod and the support top nut; Or the positioning plate is a U-shaped plate, the length and width of which are smaller than the length and width of the rectangle enclosed by the bracket columns and corresponding fixing bolts are set; the middle part of the positioning plate is overlapped on the top support rod of the bracket and suspended on both sides, and holes are pre-set on the side plates of the suspended positioning plate and the top of the bolt rod is passed through the bolt fixing nut for positioning and adjustment.

[0012] Furthermore, the fixing member includes a fixing longitudinal member arranged in the long direction of the rectangle enclosed by the support columns and a fixing transverse member arranged perpendicular to the fixing longitudinal member; The fixed longitudinal member and the fixed transverse member are both right-angled members and are connected by bolts.

[0013] Furthermore, the top of the bracket assembly and the positioning plate are 100 mm to 150 mm higher than the top surface of the foundation concrete designed to be poured.

[0014] The beneficial effects of the present invention are embodied in: The present invention provides a stable base for fixing bolts through the provision of a bracket assembly, and the bracket assembly also provides a foundation for the provision of a positioning plate; the provision of a positioning plate and a fixing member facilitates dual fixation and positioning of the fixing bolts, ensuring their stability and installation accuracy; furthermore, the provision of a bolt fixing nut and a bracket top nut facilitates adaptive adjustment during the pouring process, facilitating precise positioning of the fixing nut. Other features and advantages of the present invention will be described in the subsequent description, and in part will become apparent from the description, or will be understood through the implementation of the present invention; the main purpose and other advantages of the present invention can be achieved and obtained through the solutions specifically pointed out in the description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the construction and installation of the precise positioning device for fixing bolts; Figure 2 It is a three-dimensional schematic diagram of the connection between the precise positioning device and the fixing bolt; Figure 3 It is a side view of the connection between the precise positioning device and the fixing bolt; Figure 4 This is a top view of the connection between the precise positioning device and the fixing bolts; Figure 5 It is a three-dimensional schematic diagram of the connection between the precise positioning device and the fixing bolts without a positioning plate; Figure 6 It is a three-dimensional schematic diagram of the connection between the fixing part and the fixing bolt; Figure 7 It is a three-dimensional schematic diagram of the fixing bolt; Figure 8 It is a top view of the fixing bolt.

[0016] Figure markings: 1-pad, 2-fixing bolt, 21-bolt rod, 22-bolt adjusting nut, 23-bolt base plate, 24-bolt rib, 3-bracket assembly, 31-bracket column, 32-bracket connecting rod, 33-bracket angle connection, 34-bracket angle connection nut, 35-bracket top rod, 36-bracket top nut, 37-bracket top support rod, 4-positioning plate, 5-fixing part, 51-fixing longitudinal part, 52-fixing transverse part, 6-base reinforcement, 7-foundation reinforcement. DETAILED DESCRIPTION

[0017] For example, the installation of column bolts in a certain project involved six bolts arranged in a rectangular pattern. Each bolt had a diameter of φ56mm, a length of 2650mm, and weighed 51.2kg. The installation accuracy of each set of bolts was within ±2mm, and the relative displacement between the centers of the bolts in the same set was within ±1mm. To ensure the quality of the bolts, a precise bolt positioning device was used.

[0018] like Figures 1 to 8 As shown, the precise positioning device for the fixing bolt includes a bracket assembly 3 arranged outside 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.

[0019] 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 fixing nut 22 arranged on the upper part of the bolt rod 21, a bolt base plate 23 arranged at the bottom of the bolt rod 21, and a bolt rib 24 arranged between the bolt base plate 23 and the bolt rod 21.

[0020] In this embodiment, the upper portion of the bolt shank 21 is provided with a threaded section that corresponds to a bolt-fixing nut 22. Two bolt-fixing nuts 22 are larger than the holes in the positioning plate 4 and are provided. A bolt base plate 23 is a rectangular plate that is press-fitted to the base reinforcement 6. Bolt ribs 24 are spaced around the base plate 23.

[0021] In this embodiment, the support assembly 3 includes a set of support columns 31 arranged in a rectangular shape, support connecting rods 32 connecting adjacent support columns 31, and a support top rod 37 provided at the middle position of the top of the support columns 31; the support top rod 37, the top support connecting rod 32 and the top of the support column 31 are arranged flush, and the top surfaces of the three are connected to the positioning plate 4 through the support top rod 35; In this embodiment, a bracket top rod 35 is detachably connected to the bracket connecting rod 32 connected to the top of the bracket column 31. The bracket top rod 35 is crimped and fixed to the positioning plate 4 via a bracket top nut 36. The bracket column 31 is a rectangular tube, and the bracket connecting rod 32 is an upwardly open channel steel member. A bracket corner connector 33 is provided at the lower inner corner between the bracket column 31 and the bracket connecting rod 32 and is connected by bolts. The bracket top supporting rod 37 is a channel steel member or a rectangular rod and is connected throughout the length of the bracket between the opposing bracket columns 31.

[0022] In this embodiment, the fixing member 5 includes a fixed longitudinal member 51 arranged in the long direction of the rectangle enclosed by the bracket column 31 and a fixed transverse member 52 arranged perpendicular to the fixed longitudinal member 51; the fixed longitudinal member 51 and the fixed transverse member 52 are both right-angled members and are connected by bolts.

[0023] Combine Figures 1 to 8 As shown, the construction method of using the fixed bolt precise positioning device is further explained. The specific steps are as follows: Step 1: Pre-construct the reinforced concrete cushion layer 1 below the fixing bolts 2, and tie the steel bars after the cushion layer 1 is cured; tie the base steel bars 6 above the cushion layer 1 and tie the foundation steel bars 7 corresponding to the designed location of the fixing bolts 2.

[0024] Step 2: Make the bracket assembly 3, positioning plate 4 and fixing part 5 on site or in the factory. The size of the bracket assembly 3 is larger than the size of the foundation steel bar 7; the length and width of the positioning plate 4 are at least larger than the outer circumference of the fixing bolt 2; the size of the fixing part 5 is determined according to the design position of the fixing bolt 2.

[0025] Step three: Install the bracket assembly 3 on the base reinforcement 6 and around the foundation reinforcement 7; wherein, the bottom of the bracket column 31 in the bracket assembly 3 is placed stably on the cushion layer 1, and the bracket top support rod 37, the top bracket connecting rod 32 and the top of the bracket column 31 in the bracket assembly 3 are set flush and measured and positioned to meet the design requirements.

[0026] 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 through the bracket top rod 35 and the bracket top nut 36. The positioning plate 4 is pre-set with holes for the fixing bolts 2 to pass through.

[0027] The top of the bracket assembly 3 and the positioning plate 4 are 100 mm to 150 mm higher than the top surface of the foundation concrete to be poured.

[0028] The positioning plate 4 in step 4 is a U-shaped plate, the size of which corresponds to the size enclosed by the bracket column 31 and is adjusted and fixed by the bracket top rod 35 and the bracket top nut 36.

[0029] Or positioning plate 4 is a back-shaped plate, its length and width are less than the length and width of the rectangle surrounded by the support column 31 and correspond to the fixed bolt 2; the middle part of the positioning plate 4 is overlapped on the support top beam 37 and the two sides are suspended, the side plate of the suspended positioning plate 4 is provided with a hole in advance and is positioned and adjusted by the bolt adjusting nut 22 through the bolt rod 21 top.

[0030] Step five, the fixed bolt 2 is installed according to the position of the fixed bolt 2 in the main body steel bar, and the fixing part 5 is welded in the height direction of the fixed bolt 2, and the fixing part 5 is a rectangular frame.

[0031] Step six, after the bolt rod 21 top of the fixed bolt 2 is positioned and adjusted by the bolt adjusting nut 22 through the positioning plate 4, the fixed bolt 2 is fixed when the design elevation is met; during the concrete pouring process, if the displacement exceeds the design allowable deviation, the fixed bolt 2 is reinstalled and adjusted in time through the bolt adjusting nut 22 or the positioning plate 4, so that the horizontal position and the elevation of the fixed bolt 2 are always accurate during the whole concrete pouring process.

[0032] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any change or replacement thought by the person skilled in the art within the technical range disclosed by the present application should be covered in the protection scope of the present application.

Claims

1. A construction method for a precise positioning device for fixing bolts, characterized in that: The precise positioning device for the fixing bolt comprises a bracket assembly arranged outside 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 piece connected in the height direction of the fixing bolt; The construction method of using the fixed bolt precise positioning device is as follows: Step 1: Pre-construct the reinforced concrete cushion layer below the fixing bolts, and tie the steel bars after the cushion layer is cured; tie the cap steel bars above the cushion layer and tie the foundation steel bars corresponding to the designed fixing bolts; Step 2: Make the bracket assembly, positioning plate and fixing parts on site or in the factory. The size of the bracket assembly should be larger than the size of the foundation steel bar; the length and width of the positioning plate should be at least larger than the outer circumference of the fixing bolt; the size of the fixing part should be determined according to the design position of the fixing bolt; Step 3: Install the bracket assembly on the base reinforcement and around the foundation reinforcement; the bottom of the bracket column in the bracket assembly is placed stably on the cushion layer, and the bracket top rod, the top bracket connecting rod and the top of the bracket column in the bracket assembly are set flush 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 through the bracket top rod and bracket top nut, and the positioning plate is pre-set with holes for fixing bolts; Step 5: Install the fixing bolts in the main reinforcement according to their positions, and weld the fixing parts in the height direction of the fixing bolts. The fixing parts are rectangular frames. Step 6. After the top of the bolt rod in the fixing bolt passes through the positioning plate and is positioned and adjusted by the bolt adjusting nut, it is fixed after it meets the design elevation; during the concrete pouring process, if it is found that the displacement exceeds the design allowable deviation, it is timely adjusted by reinstalling the bolt adjusting nut or the positioning plate to ensure that the horizontal position and elevation of the fixing bolt are always accurate during the entire concrete pouring process.

2. The construction method of the fixing bolt precise positioning device according to claim 1, characterized in that: The fixing bolt is a steel structure column base bolt or an equipment foundation positioning bolt, and the fixing bolt includes a bolt rod, a bolt fixing nut arranged on the upper part of the bolt rod, a bolt base plate arranged at the bottom of the bolt rod, and a bolt rib plate arranged between the bolt base plate and the bolt rod.

3. The construction method of the fixing bolt precise positioning device according to claim 1, characterized in that: The upper portion of the bolt rod is provided with a threaded section, and the threaded section corresponds to a connecting bolt fixing nut; the bolt fixing nut is larger than the hole on the positioning plate and two of them are provided.

4. The construction method of the fixing bolt precise positioning device according to claim 1, characterized in that: The bolt base plate is a rectangular plate, which is pressed onto the base reinforcement; and the bolt ribs are arranged at intervals around the bolt base plate.

5. The construction method of the fixing bolt precise positioning device according to claim 1, characterized in that: The bracket assembly includes a group of bracket columns distributed in a rectangular shape, bracket connecting rods connected between adjacent bracket columns, and a bracket top supporting rod arranged in the middle position of the top of the bracket column; the bracket top supporting rod, the top bracket connecting rod and the top of the bracket column are arranged flush and the top surfaces of the three are connected to the positioning plate through the bracket top rod.

6. The construction method of the fixing bolt precise positioning device according to claim 1, characterized in that: A bracket top rod is detachably connected to a bracket connecting rod connected to the top of the bracket column, and the bracket top rod is pressed and fixed to the positioning plate through a bracket top nut.

7. The construction method of the fixing bolt precise positioning device according to claim 1, characterized in that: The support column is a rectangular pipe, and the support connecting rod is an upward-opening channel steel. A support angle connector is provided at the lower inner corner between the support column and the support connecting rod and is connected by bolts. The support top rod is a channel steel member or a rectangular rod member, and the support top rod is connected between the opposite support columns through the entire length.

8. The construction method of the fixing bolt precise positioning device according to claim 1, characterized in that: The positioning plate in step 4 is a U-shaped plate, and the size of the U-shaped plate is set to correspond to the size enclosed by the bracket columns and is adjusted and fixed by the bracket top rod and the bracket top nut; Or the positioning plate is a U-shaped plate, the length and width of which are smaller than the length and width of the rectangle enclosed by the bracket columns and corresponding fixing bolts are set; the middle part of the positioning plate is overlapped on the top support rod of the bracket and suspended on both sides, and holes are pre-set on the side plates of the suspended positioning plate and the top of the bolt rod is passed through the bolt fixing nut for positioning and adjustment.

9. The construction method of the fixing bolt precise positioning device according to claim 1, characterized in that: The fixing member includes a fixing longitudinal member arranged in the long direction of the rectangle enclosed by the support columns and a fixing transverse member arranged perpendicular to the fixing longitudinal member; The fixed longitudinal member and the fixed transverse member are both right-angled members and are connected by bolts.

10. The construction method of the fixing bolt precise positioning device according to claim 1, characterized in that: The top of the bracket 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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