Bolt group positioning device and method

Abstract

The invention provides a bolt group positioning device and method.The device comprises a lower-layer positioning frame, an upper-layer positioning frame and a positioning bolt combination, the upper-layer positioning frame and the lower-layer positioning frame are arranged up and down, center shafts of the upper-layer positioning frame and the lower-layer positioning frame are aligned, and the upper-layer positioning frame and the lower-layer positioning frame are connected through evenly-arranged vertical steel; the upper layer positioning frame and the lower layer positioning frame are respectively provided with an upper through hole and a lower through hole which are opposite to each other up and down, and the forming positions of the upper through hole and the lower through hole which are opposite to each other up and down are in one-to-one correspondence with the setting position of each embedded bolt in the bolt group; the positioning bolt combination comprises fixing nuts which are evenly arranged on the upper-layer positioning frame around the upper penetrating hole, puller bolts are screwed in the fixing nuts, and the puller bolts all face a center shaft of the upper penetrating hole. By the adoption of the method, each embedded bolt in the bolt group can be accurately positioned, and deviation in the concrete pouring process is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment foundation construction, and more specifically, to a bolt group positioning device and method. Background Art

[0002] During the construction of industrial equipment installation projects, we often encounter the construction of large-diameter embedded bolt groups, and the embedding accuracy is required to be very high, with an allowable deviation within the range of ±1.0mm. For example, the embedding of the foundation bolts of the converter foundation equipment in the steelmaking workshop is difficult to meet the requirements using conventional bolt embedding methods. Therefore, in the embedding work of large-diameter bolt groups, it is necessary to improve the traditional bolt embedding method to ensure the embedding accuracy of the bolts and meet the equipment installation requirements. Summary of the invention

[0003] In view of the above problems, an object of the present invention is to provide a bolt group positioning device and method, which can accurately position each embedded bolt in the bolt group and prevent deviation during concrete pouring.

[0004] The present invention provides a bolt group positioning device, comprising a lower positioning frame, an upper positioning frame and a positioning bolt assembly, wherein:

[0005] The lower positioning frame and the upper positioning frame each comprise a square flat frame welded from four steel sections, the upper positioning frame and the lower positioning frame are arranged vertically and aligned with their central axes, and the upper positioning frame and the lower positioning frame are connected by evenly arranged vertical steels;

[0006] The upper positioning frame and the lower positioning frame are respectively provided with upper through holes and lower through holes that are vertically opposite to each other, and the opening positions of the upper through holes and lower through holes that are vertically opposite to each other correspond to the setting positions of each embedded bolt in the bolt group;

[0007] The positioning bolt assembly includes fixing nuts uniformly arranged around the upper through hole on the upper positioning frame, and tightening bolts are screwed into the fixing nuts, and the tightening bolts are all facing the central axis of the upper through hole.

[0008] The diameters of the lower through hole and the upper through hole are the same and are 5 mm to 10 mm larger than the diameter of the embedded bolt.

[0009] The number of the fixing nuts is four, and the fixing nuts are fixed to the upper side surface of the upper positioning frame through supporting blocks.

[0010] The steel section is a channel steel.

[0011] The distance between the lower positioning frame and the upper positioning frame is greater than 50 cm.

[0012] The distance between the fixing nut and the edge of the upper through hole is 30 mm-40 mm.

[0013] The tightening bolt is an M24 hexagonal flange bolt.

[0014] Another aspect of the present invention provides a method for positioning a bolt group, which uses the above-mentioned bolt group positioning device to position a bolt group, and includes the following steps:

[0015] S1: Determine two horizontal first center lines of the arrangement area of ​​the bolt group;

[0016] S2: Determine two horizontal second center lines of the lower positioning frame and the upper positioning frame;

[0017] S3: aligning the first center line with the corresponding second center line, and passing the embedded bolts through the corresponding lower through holes and upper through holes;

[0018] S4: welding and fixing the lower positioning frame to the bolt support frame of the bolt group;

[0019] S5: Tighten the tightening bolts in each of the positioning bolt assemblies onto the outer wall of the corresponding embedded bolts.

[0020] The method further includes: S6: pouring concrete above the upper positioning frame to pre-embed the bolt group.

[0021] In the step S5, the tightening bolts in each of the positioning bolt assemblies are tightened against the outer wall of the corresponding embedded bolts, including: after the tightening bolts are tightened against the corresponding embedded bolts, the embedded bolts are vertical and the deviation from the designed position does not exceed 1 mm.

[0022] From the above description, it can be seen that the bolt group positioning device and method provided by the present invention, each embedded bolt in the bolt group is inserted into a double-layer positioning frame, the embedded bolt can be initially positioned vertically, and then the embedded bolt is tightened in the positioning bolt combination, further ensuring the verticality and position accuracy of the embedded bolt, and will not shift during the pouring process. The use of the present invention can make the bolt group accurately positioned without displacement, improve the embedding efficiency and quality of the embedded bolts, and provide convenience for the later equipment installation.

[0023] In order to achieve the above and related purposes, one or more aspects of the present invention include features that will be described in detail later and are particularly pointed out in the claims. The following description and the accompanying drawings describe some exemplary aspects of the present invention in detail. However, these aspects indicate only some of the various ways in which the principles of the present invention can be used. In addition, the present invention is intended to include all of these aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] By referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other objects and results of the present invention will become more apparent and easy to understand. In the accompanying drawings:

[0025] Figure 1 is a top view of a bolt group positioning device according to Embodiment 1 of the present invention;

[0026] Figure 2 A side view of a lower positioning frame according to Embodiment 1 of the present invention;

[0027] Figure 3 This is a flow chart of a bolt group positioning method according to Embodiment 2 of the present invention;

[0028] Among them, 1-lower positioning frame, 2-upper positioning frame, 3-positioning bolt combination, 31-fixing nut, 32-tightening bolt, 4-lower through hole, 5-upper through hole, 6-embedded bolt, 7-vertical steel;

[0029] The same reference numerals throughout the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0030] In the following description, for the purpose of illustration, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is apparent that these embodiments may also be implemented without these specific details. In other examples, for ease of describing one or more embodiments, known structures and devices are shown in the form of block diagrams.

[0031] The present invention can be subjected to various changes and can have various embodiments, and specific embodiments are illustrated and described in the accompanying drawings. However, the present invention is not limited to the specific implementation, and all changes, equivalents and substitutes falling within the concept and technical scope of the present invention are included, and should be understood to be included.

[0032] Ordinal terms such as first, second, etc. may be used to describe various constituent elements, but the constituent elements are not limited to the terms. The terms are only used to distinguish one constituent element from another constituent element. For example, without departing from the scope of the claims of the present invention, the second constituent element may be named as the first constituent element, and similarly, the first constituent element may be named as the second constituent element. The terms and / or include a combination of multiple associated items or a certain item among multiple associated items.

[0033] It should be understood that when a certain component is mentioned to be "connected" or "contacted" with other components, this includes not only the case where it is directly connected or contacted with other components, but also the case where other components exist in between. Conversely, when a certain component is mentioned to be "directly connected" or "directly contacted" with other components, it should be understood that there are no other components in between.

[0034] In the description of the embodiments, when it is described that a certain component is formed "on or under" another component, on or under includes two components directly contacting each other or at least one other component is arranged and formed between the two components. Moreover, when it is expressed as on or under, it refers to not only the upper direction but also the lower direction based on a certain component.

[0035] The terms used in this application are only used to illustrate specific embodiments and are not intended to limit the present invention. Unless the context clearly provides otherwise, singular expressions include plural expressions. In this application, it should be understood that terms such as "including" or "having" are used to specify the presence of features, numbers, steps, operations, constituent elements, parts or combinations thereof recorded in the specification, and do not preclude the presence or additional possibility of one or more other features, numbers, steps, operations, constituent elements, parts or combinations thereof.

[0036] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as those generally understood by those skilled in the art. Terms defined in commonly used dictionaries should be interpreted as having the same meaning as in the context of the relevant technology, and if not clearly defined in this application, they should not be interpreted as ideal or overly formal meanings.

[0037] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] Example 1

[0039] Figure 1 is a top view of a bolt group positioning device according to Embodiment 1 of the present invention; Figure 2 A side view of a lower positioning frame according to Embodiment 1 of the present invention;

[0040] like Figure 1 , Figure 2 As shown, the bolt group positioning device proposed in this embodiment can be used for pre-embedded positioning of bolt groups in concrete foundations of large equipment, and can also be used for positioning a group of pre-embedded bolts in a steel cage in other occasions.

[0041] The concrete foundation of large equipment should be equipped with embedded bolts in groups. Generally, the shape of the embedded bolts is square or rectangular. The embedded bolts in groups are first screwed into the bolt support plate, and the bolt support plate is then fixed horizontally into the steel cage to fix the position of the embedded bolts in groups. However, there is only one screw connection point between the embedded bolts and the bolt support plate. The embedded bolts are not positioned vertically and stably enough. They are prone to tilting during the pouring of concrete, making it difficult to install large equipment. If the embedded bolts are welded to the adjacent steel bars, sometimes there are no suitable adjacent steel bars for welding, and the welding positioning is not accurate and stable. The bolt group positioning device can be used to position each embedded bolt at one time, and the positioning is accurate and stable, and the deviation will not exceed the allowable value.

[0042] The bolt group positioning device may include a lower positioning frame 1 and an upper positioning frame 2 fixed together, and a positioning bolt assembly 3 arranged on the upper positioning frame 2. The lower positioning frame 1 and the upper positioning frame 2 can initially limit the position of each embedded bolt 6 in the bolt group and gather each embedded bolt 6 together, and the positioning bolt assembly 3 is used to further accurately position each embedded bolt 6.

[0043] In order to facilitate the preliminary vertical positioning of the embedded bolts 6, the lower positioning frame 1 and the upper positioning frame 2 can both include a square flat frame welded from four steel sections, the upper positioning frame 2 and the lower positioning frame 1 are arranged up and down and the central axes are aligned, and the lower positioning frame 1 and the upper positioning frame 2 are connected by evenly arranged vertical steels 7. The shape and size of the lower positioning frame 1 and the upper positioning frame 2 can be the same and have a certain spacing.

[0044] The lower positioning frame 1 and the upper positioning frame 2 are respectively provided with lower through holes 4 and upper through holes 5 that are opposite to each other from top to bottom, and the opening positions of the lower through holes 4 and upper through holes 5 that are opposite to each other from top to bottom correspond to the setting positions of each embedded bolt 6 in the bolt group. According to the design position and spacing of each embedded bolt 6 in the bolt group, through holes are opened on the lower positioning frame 1 and the upper positioning frame 2 for the insertion of the embedded bolts 6. The lower through holes 4 and upper through holes 5 that are opposite to each other from top to bottom and have spacing can keep the embedded bolts 6 from deviating in the vertical direction.

[0045] The lower positioning frame 1 can be welded to the bolt support plate to fix the entire positioning device in the steel cage. When the lower positioning frame 1 is welded to the bolt support plate, it should be ensured that the central axis of the lower positioning frame 1 coincides with the central axis of the bolt group, and the embedded bolts 6 can be vertically penetrated into the lower through holes 4 and the upper through holes 5.

[0046] In order to ensure that the embedded bolts 6 are absolutely vertical and not offset, the positioning bolt assembly 3 may include fixing nuts 31 evenly arranged around the upper through hole 5 on the upper positioning frame 2, and tightening bolts 32 are screwed into the fixing nuts 31, and the tightening bolts 32 are all facing the central axis of the upper through hole 5.

[0047] After the embedded bolt 6 is passed through the lower through hole 4 and the upper through hole 5, the position of the embedded bolt 6 in the through hole is strictly adjusted according to the design requirements, so that the horizontal deviation of the embedded bolt 6 and the designed position does not exceed 1 mm, and each tightening bolt 32 in the positioning bolt assembly 3 is rotated so that the tightening bolts 32 of one circle clamp the embedded bolt 6, so that the embedded bolt 6 is further accurately positioned and firmly positioned, and will not be deviated due to the impact of concrete during the concrete pouring process.

[0048] In a specific embodiment of the present invention, in order to preliminarily define the embedded bolt 6, the diameter of the lower through hole 4 and the upper through hole 5 are the same, and are 5 mm to 10 mm larger than the diameter of the embedded bolt 6. The diameter of the lower through hole 4 and the upper through hole 5 is slightly larger than the diameter of the embedded bolt 6, which can not only smoothly penetrate the embedded bolt 6, but also meet the requirements of fine adjustment of the position of the embedded bolt 6.

[0049] In a specific embodiment of the present invention, there are four fixing nuts 31, which are fixed to the upper side of the upper positioning frame 2 through a support block. A tightening bolt 32 is screwed into the fixing nut 31, and the four tightening bolts 32 surround the embedded bolts 6 to clamp the tightening bolts 32 together, and the clamping is firm.

[0050] In a specific embodiment of the present invention, the steel section can be channel steel. According to the specific conditions of the construction, the size of each steel section is determined, and the lower positioning frame 1 and the upper positioning frame 2 are welded to form the upper through hole 5 and the lower through hole 4. Both are arranged on the middle plate of the channel steel.

[0051] In a specific embodiment of the present invention, in order to vertically position each embedded bolt 6, the spacing between the lower positioning frame 1 and the upper positioning frame 2 is greater than 50 cm. The spacing between the upper through hole 5 and the lower through hole 4 is about 50 cm, which can keep the embedded bolt 6 vertical without tilting.

[0052] In a specific embodiment of the present invention, in order to facilitate rotation and tightening, the distance between the fixing nut 31 and the edge of the upper through hole 5 is 30mm-40mm. The screw of the tightening bolt 32 faces the embedded bolt 6, and the nut of the tightening bolt 32 can be tightened and loosened. The tightening distance of 30mm-40mm can effectively tighten.

[0053] In a specific embodiment of the present invention, the jacking bolt 32 can be an M24 hexagonal flange bolt, which is convenient for using a wrench to rotate the hexagonal nut of the hexagonal flange bolt. The thicker jacking bolt 32 has a large contact area with the embedded bolt 6, which can be stably tightened.

[0054] Example 2

[0055] Figure 3 Flow chart of a bolt group positioning method according to Embodiment 2 of the present invention.

[0056] like Figure 3 As shown, the bolt group positioning method provided in this embodiment adopts the bolt group positioning device described in Example 1 to position the bolt group, and includes the following steps:

[0057] S1: Determine two first horizontal center lines of the arrangement area of ​​the bolt group.

[0058] Generally, the shape of the bolt group surrounded by the embedded bolts 6 is square or rectangular. The two first center lines of the bolt group are measured and marked. The first center lines can be marked on the bolt support plate of the bolt group to facilitate the placement of the bolt group positioning device in Example 1.

[0059] S2: Determine two second horizontal center lines of the lower positioning frame 1 and the upper positioning frame 2.

[0060] In order to align with the two first center lines, the two second center lines of the lower positioning frame 1 and the upper positioning frame 2 are measured and marked. The second center line can be marked on the lower positioning frame 1 to facilitate alignment with the first center line when the lower positioning frame 1 is placed on the bolt support plate of the bolt group.

[0061] S3: Align the first center line with the corresponding second center line, and pass the embedded bolts 6 through the corresponding lower through holes 4 and upper through holes 5.

[0062] The lower through hole 4 is measured, marked and cut on the lower positioning frame 1 according to the designed position of each embedded bolt 6.

[0063] After aligning the first center line with the corresponding second center line, the lower positioning frame 1 is placed on the bolt support plate of the bolt group, and each embedded bolt 6 is passed through the corresponding lower through hole 4 and upper through hole 5 to preliminarily limit the embedded bolt 6.

[0064] S4: Weld and fix the lower positioning frame 1 to the bolt support frame of the bolt group.

[0065] Align the first center line with the corresponding second center line, keep the lower positioning frame 1 horizontal, weld and fix the lower positioning frame 1 to the bolt support frame of the bolt group, and stabilize the entire bolt group positioning device.

[0066] S5: Tighten the tightening bolts 32 in each positioning bolt assembly 3 onto the outer wall of the corresponding embedded bolt 6 .

[0067] In order to further strictly locate the position of the embedded bolt 6, the precise position of each embedded bolt 6 according to the design requirements is measured one by one according to the first center line and the second center line. After the horizontal position of the embedded bolt 6 is fine-tuned, a circle of tightening bolts 32 are used to clamp it in the center, and the positioning is accurate and will not be displaced. The embedded bolt 6 should be positioned vertically and the deviation from the design position should not exceed 1mm. The accurate position is convenient for the later installation of large equipment.

[0068] S6: Pour concrete to above the upper positioning frame 2 to embed the bolt 6 group.

[0069] After positioning of each embedded bolt 6 is completed, concrete pouring begins. Note that the concrete is poured symmetrically around the positioning device of the bolt group and vibrated in layers to prevent the vibrating rod from touching the embedded bolt 6.

[0070] The concrete covers the entire bolt group positioning device until it is poured to the designed height, and the bolt group pre-embedded is completed. During the pouring process, the pre-embedded bolts 6 are positioned stably and will not deviate.

[0071] The bolt group positioning device and method according to the present invention are described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various improvements can be made to the bolt group positioning device and method proposed by the present invention without departing from the content of the present invention. Therefore, the protection scope of the present invention should be determined by the content of the attached claims.

Claims

1. A bolt group positioning device, characterized in that: It includes a lower positioning frame, an upper positioning frame and a positioning bolt assembly, wherein: The lower positioning frame and the upper positioning frame each comprise a square flat frame welded from four steel sections, the upper positioning frame and the lower positioning frame are arranged vertically and aligned with their central axes, and the upper positioning frame and the lower positioning frame are connected by evenly arranged vertical steels; The upper positioning frame and the lower positioning frame are respectively provided with upper through holes and lower through holes that are vertically opposite to each other, and the opening positions of the upper through holes and the lower through holes that are vertically opposite to each other correspond to the setting positions of each embedded bolt in the bolt group; The positioning bolt assembly includes fixing nuts uniformly arranged on the upper positioning frame around the upper through hole, and tightening bolts are screwed into the fixing nuts, and the tightening bolts are all facing the central axis of the upper through hole.

2. The bolt group positioning device according to claim 1, characterized in that: The diameters of the lower through hole and the upper through hole are the same and are 5 mm to 10 mm larger than the diameter of the embedded bolt.

3. The bolt group positioning device according to claim 1, characterized in that: The number of the fixing nuts is four, and the fixing nuts are fixed to the upper side surface of the upper positioning frame through supporting blocks.

4. The bolt group positioning device according to claim 1, characterized in that: The steel section is a channel steel.

5. The bolt group positioning device according to claim 1, characterized in that: The distance between the lower positioning frame and the upper positioning frame is greater than 50 cm.

6. The bolt group positioning device according to claim 1, characterized in that: The distance between the fixing nut and the edge of the upper through hole is 30 mm-40 mm.

7. The bolt group positioning device according to claim 1, characterized in that: The tightening bolt is an M24 hexagonal flange bolt.

8. A method for positioning a bolt group, characterized in that: The bolt group positioning device according to any one of claims 1 to 7 is used to position the bolt group, comprising the following steps: S1: Determine two horizontal first center lines of the arrangement area of ​​the bolt group; S2: Determine two horizontal second center lines of the lower positioning frame and the upper positioning frame; S3: aligning the first center line with the corresponding second center line, and passing the embedded bolts through the corresponding lower through holes and upper through holes; S4: welding and fixing the lower positioning frame to the bolt support frame of the bolt group; S5: Tighten the tightening bolts in each of the positioning bolt assemblies onto the outer wall of the corresponding embedded bolts.

9. The bolt group positioning method according to claim 8, characterized in that: The method further includes: S6: pouring concrete above the upper positioning frame to pre-embed the bolt group.

10. The bolt group positioning method according to claim 8, characterized in that: In the step S5, tightening the tightening bolts in each of the positioning bolt assemblies against the outer wall of the corresponding embedded bolts includes: After the tightening bolts are tightened against the corresponding embedded bolts, the embedded bolts are vertical and the deviation from the designed position does not exceed 1 mm.

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