Large equipment foundation bolt construction positioning structure

Abstract

The utility model belongs to the technical field of building construction, and particularly relates to a large equipment foundation bolt construction positioning structure which comprises a pre-positioning support and a positioning switching part. The pre-positioning support comprises at least three transverse rods, and the transverse rods are sequentially connected end to end to define a closed annular frame structure. The bottom face of the annular frame structure is connected with at least three stand columns, and the bottom faces of the at least three stand columns are horizontally tangent and distributed in the circumferential direction of the annular frame structure. The positioning adapter part comprises an adapter plate, a positioning connecting rod is arranged on the adapter plate, and the two ends of the positioning connecting rod protrude out of the adapter plate; at least two positioning connecting rods are arranged, and the two ends of each positioning connecting rod are fixed to the annular frame structure; positioning through holes are formed in the adapter plate, foundation bolts are arranged in the positioning through holes, limiting nuts are in threaded connection with the foundation bolts on the upper side and the lower side of the adapter plate, and the limiting nuts abut against the adapter plate. The height position of the foundation bolt can be flexibly and conveniently adjusted, the positioning installation precision and the installation efficiency of the bolt are improved, and manpower is saved.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, and specifically relates to a construction positioning structure for bolts on large equipment foundations. Background Technology

[0002] Large equipment such as blast furnaces, rolling mills, and towers can weigh tens of tons. Therefore, the installation foundations for these types of equipment are generally cast-in-place concrete foundations with multiple anchor bolts pre-embedded. The equipment is installed and positioned by being fixedly connected to the anchor bolts pre-embedded in the foundation via a bottom flange. Therefore, the casting and installation accuracy of the anchor bolts pre-embedded in the concrete foundation directly affects whether the equipment can be installed and operated smoothly.

[0003] Currently, during reinforced concrete foundation construction, after the reinforcing mesh is tied, the anchor bolt positions are determined by surveying and setting out, specifically the horizontal and upper height positions of the anchor bolts. The anchor bolts are then directly welded to the reinforcing mesh or fixed to it using structural steel. Reinforcing bars are vertically welded to the outer wall of the bolts; these bars are fixed to the reinforcing mesh to achieve the pre-positioning of the bolts. Finally, concrete is poured into the foundation formwork to complete the pre-embedded bolt installation within the foundation.

[0004] In the aforementioned construction process, before installing the embedded bolts, both their height and horizontal positions need to be manually determined simultaneously. After the bolts are pre-positioned, they are welded. If either the height or horizontal position of the welded bolt is incorrect, the faulty bolt must be cut off and re-welded, which is time-consuming and labor-intensive. Furthermore, direct welding of bolts to reinforcing bars can cause them to bend and deform due to heat, and contact between the bolts or bolt connectors and uneven surfaces at the construction site can affect the dimensional accuracy and verticality of the bolts. In addition, large equipment foundations require a large number of anchor bolts, typically arranged in groups. Measuring and positioning the horizontal position and elevation of each anchor bolt individually using the aforementioned method is cumbersome, wasteful of manpower, and inefficient. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a construction positioning structure for foundation bolts of large equipment, which can flexibly and conveniently adjust the height and position of the foundation bolts, improve the positioning and installation accuracy and efficiency of the bolts, and save manpower.

[0006] The technical solution adopted by this utility model to solve the technical problem is: a construction positioning structure for bolts on the foundation of large equipment, including a pre-positioning bracket and a positioning adapter;

[0007] The prepositioning bracket includes horizontal bars parallel to the horizontal plane, and at least three horizontal bars are provided. The at least three horizontal bars are connected end to end to form a closed ring frame structure. The top surfaces of the different horizontal bars are flush. The bottom surface of the ring frame structure is vertically connected to columns, and at least three columns are provided. The bottom surfaces of the at least three columns are flat and evenly distributed along the circumference of the ring frame structure.

[0008] The positioning adapter includes an adapter plate with positioning connecting rods arranged parallel to it. Both ends of the positioning connecting rods protrude from the adapter plate. At least two positioning connecting rods are provided, and the at least two positioning connecting rods are spaced apart in a horizontal direction perpendicular to it. Both ends of the positioning connecting rods are overlapped and fixed to the top surface of the ring frame structure. The adapter plate has a vertically penetrating positioning through hole, and a base bolt is provided in the positioning through hole. The base bolts on the upper and lower sides of the adapter plate are threaded with limit nuts, and the end face of the limit nut near the adapter plate abuts against the adapter plate.

[0009] Furthermore, there are four horizontal bars and four vertical columns, which are connected end to end to form a closed rectangular ring structure; the vertical columns are located at the joints of two adjacent horizontal bars on the rectangular ring structure.

[0010] Furthermore, the columns of the prepositioning bracket are welded with connecting rods parallel to the horizontal plane, and two adjacent columns are connected by the connecting rods; the connecting rods are located above the bottom surface of the columns and are arranged vertically at intervals.

[0011] Furthermore, the top surface of the prepositioning bracket is provided with lifting rings, and multiple lifting rings are provided, which are evenly distributed along the circumference of the ring frame structure.

[0012] Furthermore, the bottom surface of the column is provided with a foot cup, which includes an adjusting bolt perpendicular to the horizontal plane and a base installed at the lower end of the adjusting bolt. The upper part of the adjusting bolt is threadedly connected to the column.

[0013] Furthermore, the adapter plate has a thickness greater than or equal to 10 mm.

[0014] Furthermore, the positioning link is fixedly installed below the adapter plate and welded to the bottom surface of the adapter plate.

[0015] Furthermore, the adapter plate is provided with multiple positioning through holes.

[0016] Furthermore, a connecting shaft is vertically arranged on the top surface of the prepositioning bracket, and a protrusion is provided on the lower outer side wall of the connecting shaft; a rotating sleeve is coaxially sleeved on the outer side of the connecting shaft, the lower end face of the rotating sleeve abuts against the upper end face of the protrusion, and the rotating sleeve can rotate around the connecting shaft; the rotating sleeve has an elevation detection rod parallel to the horizontal plane.

[0017] Furthermore, the protrusion is a ring plate structure sleeved on the outside of the adapter shaft. The outer wall of the ring plate structure is provided with a threaded hole that runs radially through it. A fastening screw is threaded into the threaded hole. The fastening screw abuts against the adapter shaft to axially position the protrusion on the adapter shaft.

[0018] Compared with existing technologies, the advantages of this utility model are as follows: It provides a positioning structure for the foundation bolts of large equipment. A pre-positioning bracket supports the positioning adapter with the foundation bolts, fixing the adapter to the reinforcing mesh within the foundation. A positioning connecting rod secures the adapter plate and the foundation bolts to the pre-positioning bracket, preventing the welded foundation bolts from bending due to heat and affecting the verticality of the installation, thus improving the installation accuracy of the foundation bolts. A adapter plate with positioning through holes horizontally positions the foundation bolts, and limiting nuts on the upper and lower sides of the adapter plate abut against the plate, axially positioning the foundation bolts. Rotating the limiting nuts adjusts the height of the upper end of the foundation bolt protruding from the adapter plate. Before concrete pouring, the height of the foundation bolts can be adjusted by adjusting the axial position of the two limiting nuts, ensuring the elevation accuracy of the foundation bolts in the vertical direction. This method is convenient, flexible, and saves manpower. Attached Figure Description

[0019] Figure 1 This is a top view of the structure of this utility model;

[0020] Figure 2 It is along Figure 1 Schematic diagram of the cross-sectional structure of the mid-section line of sight AA;

[0021] Figure 3 This is a schematic diagram of the assembly structure of the adapter shaft, the sleeve, and the protrusion.

[0022] Figure 4 yes Figure 2 Enlarged structural diagram of section B in the middle;

[0023] Figure 5 This is a schematic diagram of the assembly structure of this utility model and the steel mesh during construction;

[0024] Attached reference numerals: 11-Horizontal bar; 12-Column; 13-Reinforcing bar; 14-Lifting ring; 15-Foot cup; 151-Adjusting bolt; 152-Base; 2-Adapter plate; 21-Adjusting space; 3-Positioning connecting rod; 4-Limit nut; 5-Adapter shaft; 51-Protrusion; 52-Fasting screw; 6-Swivel sleeve; 61-Elevation detection rod; 8-Reinforcing mesh; 9-Foundation bolt. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] As attached Figure 1-5 As shown, a positioning structure for the construction of foundation bolts for large equipment includes a pre-positioning bracket and a positioning adapter. The pre-positioning bracket includes horizontal bars 11 parallel to the horizontal plane, with at least three horizontal bars 11 connected end-to-end to form a closed ring frame structure. The top surfaces of the different horizontal bars 11 are flush. At least three columns 12 are vertically connected to the bottom surface of the ring frame structure, with their bottom surfaces flat and evenly distributed along the circumference of the ring frame structure. The positioning adapter includes an adapter plate 2, on which are arranged parallel to the adapter. A positioning link 3 is provided, with both ends protruding from the adapter plate 2. At least two positioning links 3 are provided, spaced apart in a horizontal direction perpendicular to the adapter plate 2. Both ends of the positioning link 3 are overlapped and fixed to the top surface of the ring frame structure. The adapter plate 2 has a vertically penetrating positioning through hole, within which a base bolt 9 is installed. The base bolt 9 passes through the positioning through hole. Limit nuts 4 are threaded onto the base bolts 9 on both the upper and lower sides of the adapter plate 2, and the limit nuts 4 abut against the end face of the adapter plate 2 near the adapter plate 2. The lower end face of the base bolt 9 is located above the bottom surface of the column 12, and the two are spaced apart to ensure that the base bolt 9 is adjustable in the vertical direction.

[0027] After the foundation reinforcement mesh 8 is tied, the horizontal position origin of the foundation bolts 9 is measured and marked. This horizontal position origin will be referred to as the marking origin below. First, install the pre-positioning bracket so that the horizontal center of the ring frame structure on the pre-positioning bracket basically coincides with the marking origin. The column 12 on the pre-positioning bracket passes downward through the mesh of the reinforcement mesh 8 and abuts against the base surface. Then, the column 12 is welded to the reinforcement mesh 8, and the pre-positioning bracket installation is completed. "Basically coincident" means that the horizontal distance between the horizontal center of the ring frame structure and the marking origin is less than 20mm. After the pre-positioning bracket is installed, the positioning adapter is transported above the pre-positioning bracket. The two ends of the positioning connecting rod 3 overlap the top surface of the ring frame structure. The height of the foundation bolt 9 is adjusted by rotating the limiting nuts 4 on the upper and lower sides of the adapter plate 2, ensuring the upper end of the foundation bolt 9 matches the design height. Then, the limiting nuts 4 on the lower side of the adapter plate 2 are rotated upwards until their upper end abuts against the lower end of the adapter plate 2. At this point, the limiting nuts 4 on both sides of the adapter plate 2 cooperate to clamp the adapter plate 2, positioning the foundation bolt 9 on the adapter plate 2. Finally, the horizontal position of the entire positioning adapter is adjusted so that the foundation bolt 9 is vertically aligned with the horizontal origin. The positioning connecting rod 3 is then welded to the ring frame structure, completing the positioning and installation of the foundation bolt 9. After the above operations are completed, the height of the foundation bolt 9 can be adjusted by rotating the limiting nuts 4 on the upper and lower sides of the adapter plate 2. This allows for easy and flexible calibration of the foundation bolt 9 before concrete pouring, eliminating the need to cut related components and saving time and effort.

[0028] This invention facilitates the installation and precise positioning of the foundation bolt 9 by setting a pre-positioning bracket to support the positioning adapter with the foundation bolt 9 and fixing the positioning adapter to the steel mesh 8 in the foundation. The positioning connecting rod 3 is overlapped and welded to the ring frame structure to fix the foundation bolt 9 on the pre-positioning bracket, preventing the foundation bolt 9 from being directly welded to other structures, thus avoiding thermal bending that could affect the verticality of the installation and improving the installation accuracy. A transition plate 2 with positioning through holes horizontally positions the foundation bolt 9, and limiting nuts 4, which abut against the transition plate 2, axially position the foundation bolt 9 on the transition plate 2. The height of the foundation bolt 9 protruding from the transition plate 2 can be adjusted by simultaneously rotating the two limiting nuts 4. Before concrete pouring, the height of the foundation bolt 9 can be adjusted at any time by adjusting the two limiting nuts 4, ensuring the correct height position, providing convenience, flexibility, and saving manpower.

[0029] The pre-positioning bracket is used to define the horizontal installation and adjustment range of the foundation bolt 9, facilitating the coarse positioning and installation of the positioning adapter containing the foundation bolt 9. The horizontal bars 11 and vertical columns 12 on the pre-positioning bracket can be made of steel materials such as channel steel, steel pipe, or steel plate. The ring frame structure can be triangular, quadrilateral, pentagonal, or other polygonal. The vertical columns 12 can be connected at the middle of the length of the horizontal bars 11 or located at the ends of the horizontal bars. Preferably, there are four horizontal bars 11 and four vertical columns 12, which are connected end-to-end to form a closed rectangular ring frame structure; the vertical columns 12 are located at the joints of adjacent horizontal bars 11 on the rectangular ring frame structure. The structure is simple and easy to manufacture.

[0030] The pre-positioning bracket can be directly welded to the reinforcing mesh 8 via the crossbar 11 and the column 12, or an additional connecting rod can be provided to fix the pre-positioning bracket to the reinforcing mesh 8. Preferably, a reinforcing rod 13 parallel to the horizontal plane is welded to the column 12 of the pre-positioning bracket, and two adjacent columns 12 are connected by the reinforcing rod 13; the connecting rod 13 is located above the bottom surface of the column 12 and the two are arranged vertically at intervals. The reinforcing rod 13 is used to connect two adjacent columns 12, improving the stability of the column 12 and improving the structural reliability of the pre-positioning bracket. The pre-positioning bracket can be connected to the reinforcing mesh 8 via the reinforcing rod 13.

[0031] Preferably, the top surface of the pre-positioning bracket is provided with lifting rings 14, and multiple lifting rings 14 are provided, which are evenly distributed along the circumference of the ring frame structure. This facilitates the hoisting and transportation of the pre-positioning bracket and saves manpower. The lifting rings 14 can be a ring plate structure welded to the pre-positioning bracket, or they can be commercially available lifting ring bolts. Generally, three lifting rings 14 are sufficient to meet the hoisting requirements.

[0032] The base surface at the construction site is mostly uneven. Even if the bottom surfaces of the multiple columns 12 on the pre-positioning bracket are flush, it is still difficult to ensure that the top surface of the pre-positioning bracket is parallel to the horizontal plane. This affects the parallelism of the positioning connecting rod 3 and the adapter plate 2 installed above it with the horizontal plane, and consequently affects the verticality of the foundation bolts 9 on the adapter plate 2. Preferably, the bottom surface of the column 12 is provided with a foot cup 15. The foot cup 15 includes an adjusting bolt 151 and a base 152 installed at the lower end of the adjusting bolt 151. The upper part of the adjusting bolt 151 is threadedly connected to the column 12. After the pre-positioning bracket is placed on the base surface, the support height of the foot cup 15 is adjusted by rotating the adjusting bolt 151, thereby realizing the height adjustment of the multiple columns 12, ensuring that the top surface of the pre-positioning bracket is parallel to the horizontal plane, and that the positioning connecting rod 3 and the adapter plate 2 are also parallel to the horizontal plane, improving the verticality of the foundation bolts 9.

[0033] The positioning adapter is used to install the base bolt 9 and transfer it to the pre-positioning bracket, preventing the base bolt 9 from being directly welded to the pre-positioning bracket and deformed, thus affecting the positioning accuracy. The adapter plate 2 on the positioning adapter is used to directly install the base bolt 9, and the positioning connecting rod 3 is used to fix the adapter plate 2 to the pre-positioning bracket. The positioning through hole on the adapter plate 2 is used to radially position the base bolt 9 on the adapter plate 2, making it perpendicular to the adapter plate 2. The positioning through hole and the base bolt 9 have a clearance fit, facilitating the installation and adjustment of the base bolt 9. An adjustment space 21 can be provided between the adapter plate 2 and the inner wall of the ring frame structure, allowing a person to reach under the adapter plate 2 through the adjustment space 21 to tighten the limiting bolt 4. The thickness of the adapter plate 2 is determined according to the weight of the base bolt 9 to prevent the adapter plate 2 from bending and deforming when the base bolt 9 is suspended in the air. Preferably, the adapter plate 2 has a thickness greater than or equal to 10mm, and the axial length of the positioning through hole wall on it is equal to the thickness of the adapter plate 2. The limiting length of the positioning through hole wall for the base bolt 9 is more than 10mm, which improves the horizontal positioning accuracy of the base bolt 9.

[0034] The positioning link 3 can be made of steel materials such as reinforcing bars, steel pipes, and channel steel. The positioning link 3 can be bolted to the adapter plate 2 or welded to it. The positioning link 3 can be positioned below, above, or to the side of the adapter plate 2. When the positioning link 3 is positioned to the side or above the adapter plate 2, the weight of the adapter plate 2 and its foundation bolts 9 is borne by the adapter or welded structure at the connection between the adapter plate 2 and the positioning link 3, which can easily lead to damage to the adapter and welded structure, affecting the reliability of the connection. Preferably, the positioning link 3 is fixedly installed below the adapter plate 2 and welded to the bottom surface of the adapter plate 2. The positioning link 3 supports the adapter plate 2, and the weight of the adapter plate 2 and its foundation bolts 9 is directly borne by the positioning link 3, avoiding excessive load damage to the welded structure and improving the reliability of the connection.

[0035] Currently, foundation bolts 9 in equipment installation foundations are generally arranged in groups, meaning that there are multiple parallel foundation bolts 9 within the same group. The distance between two foundation bolts 9 in the same group is generally within 200mm. If each foundation bolt 9 is individually adjusted and positioned on-site, it is not only inefficient but also results in significant installation errors. Preferably, the adapter plate 2 is provided with multiple positioning through holes, and the relative positions of the multiple positioning through holes on the adapter plate 2 are determined based on the relative positions of the multiple foundation bolts 9 in the same group. First, the multiple foundation bolts 9 in the same group are installed in the positioning through holes of the adapter plate 2, and then the positioning adapter is installed on the pre-positioning bracket. During this process, the radial relative positions of the multiple foundation bolts 9 in the same group remain unchanged, improving the relative positional accuracy of the multiple foundation bolts 9 in the same group.

[0036] After the installation of multiple foundation bolts 9, the elevation of the foundation bolts 9 in the same group is checked by measuring and setting out to see if it meets the requirements. Preferably, a transition shaft 5 is vertically arranged on the top surface of the pre-positioning bracket, and a protrusion 51 is provided on the lower outer side wall of the transition shaft 5; a rotating sleeve 6 is coaxially sleeved on the outer side of the transition shaft 5, and the lower end face of the rotating sleeve 6 abuts against the upper end face of the protrusion 51. The rotating sleeve 6 can rotate around the transition shaft 5; the rotating sleeve 6 has an elevation detection rod 61 parallel to the horizontal plane. The height position of the lower end face of the elevation detection rod 61 is the standard height position of the upper end of the foundation bolt 9. The transition shaft 5 can be fixed to the pre-positioning bracket by welding, bolt connection, etc. The rotating sleeve 6 is clearance-fitted with the transition shaft 5, and the protrusion 51 supports the rotating sleeve 6 upward and limits it in the vertical direction to ensure the height position of the elevation detection rod 61 on the rotating sleeve 6. Rotating the rotating sleeve 6 causes the elevation measuring rod 61 on it to rotate around the adapter shaft 5, simultaneously checking whether the height position of the upper ends of multiple foundation bolts 9 in the same group meets the requirements, saving manpower. The installation accuracy of the height position is met when the top surface of the foundation bolt 9 is flush with the bottom surface of the elevation measuring rod 61; otherwise, the height position of the foundation bolt 9 needs to be adjusted. After the height position of the upper ends of the foundation bolts 9 is checked, pulling up the elevation measuring rod 61 causes the rotating sleeve 6 to disengage from the upper end of the adapter shaft 5 and be installed onto the adapter shaft 5 on other pre-positioned supports.

[0037] The protrusion 51 can be a bolt, pin, ring plate, or other structure. It can be an integral structure formed with the adapter shaft 5, or it can be a component connected to the adapter shaft 5 by welding or bolting. The protrusion 51 can also be installed on the adapter shaft 5 by clamping or snap-fitting. Considering the different installation heights of the foundation bolts 91 in different bolt groups at the construction site, preferably, the protrusion 51 is a ring plate structure sleeved on the outside of the adapter shaft 5 and axially slidingly fitted therewith. The outer wall of the ring plate structure has a threaded hole extending radially through it. A fastening screw 52 is threaded into the threaded hole, and the fastening screw 52 abuts against the adapter shaft 5, axially positioning the protrusion 51 on the adapter shaft 5. The fastening screw 52 and the inner wall of the protrusion 51 cooperate to clamp the adapter shaft 5, axially positioning the protrusion 51 on the adapter shaft 5. Unscrewing the fastening screw 52 outwards to disengage it from the adapter shaft 5 allows the axial position of the protrusion 51 on the adapter shaft 5 to be adjusted. The height position of the rotating sleeve 6 on the adapter shaft 5 can be adjusted according to the design requirements of the upper end height of different foundation bolts 9, thereby realizing the height adjustment of the elevation detection rod 61, so as to complete the detection of the upper end height position of foundation bolts 9 with different design heights, further improving production efficiency and saving manpower.

[0038] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

[0039] In the description of this utility model, the terms "upper," "lower," "top," "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figure. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe the positional relationship in the figure are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above-mentioned terms can be understood according to the specific circumstances.

Claims

1. A large equipment foundation bolt construction positioning structure, characterized by: The pre-positioning support and the positioning adapter are included; The pre-positioning support includes horizontal bars (11) parallel to the horizontal plane, and the horizontal bars (11) are sequentially connected end to end to form a closed ring frame structure, the top surfaces of different horizontal bars (11) are flush, and vertical columns (12) are vertically connected to the bottom surface of the ring frame structure, and the vertical columns (12) are sequentially connected end to end to form a closed ring frame structure. The positioning adapter includes an adapter plate (2), and a positioning connecting rod (3) parallel to the adapter plate (2) is arranged on the adapter plate (2), the two ends of the positioning connecting rod (3) protrude from the adapter plate (2), at least two positioning connecting rods (3) are arranged in the horizontal direction perpendicular to the adapter plate (2), the two ends of the positioning connecting rod (3) are lapped and fixed on the top surface of the ring frame structure, a positioning through hole penetrating the adapter plate (2) in the up-down direction is arranged on the adapter plate (2), a foundation bolt (9) is arranged in the positioning through hole, the foundation bolt (9) penetrates the positioning through hole, and a limiting nut (4) is threadedly connected to the foundation bolt (9) on the upper side and the lower side of the adapter plate (2), and the end surface of the limiting nut (4) close to the adapter plate (2) is in abutment with the adapter plate (2).

2. The large equipment foundation bolt construction positioning structure according to claim 1, characterized by: The horizontal bars (11) and the vertical columns (12) are both provided with four horizontal bars (11) sequentially connected end to end to form a closed rectangular ring frame structure, and the vertical columns (12) are arranged at the joint of adjacent two horizontal bars (11) of the rectangular ring frame structure.

3. The large equipment foundation bolt construction positioning structure according to claim 1, characterized by: A connecting rod (13) parallel to the horizontal plane is welded on the vertical column (12) of the pre-positioning support, and the two vertical columns (12) close to each other are connected through the connecting rod (13), and the connecting rod (13) is located above the bottom surface of the vertical column (12) and is arranged in the up-down direction.

4. The large equipment foundation bolt construction positioning structure according to claim 1, characterized by: A lifting eye (14) is arranged on the top surface of the pre-positioning support, and a plurality of lifting eyes (14) are uniformly distributed along the circumferential direction of the ring frame structure.

5. The large equipment foundation bolt construction positioning structure according to claim 1, characterized by: A foot cup (15) is arranged on the bottom surface of the vertical column (12), the foot cup (15) includes an adjusting bolt (151) perpendicular to the horizontal plane and a base (152) arranged at the lower end of the adjusting bolt (151), and the upper portion of the adjusting bolt (151) is threadedly connected with the vertical column (12).

6. The large equipment foundation bolt construction positioning structure according to claim 1, characterized by: The thickness of the adapter plate (2) is greater than or equal to 10 mm.

7. The large equipment foundation bolt construction positioning structure according to claim 1, characterized by: The positioning connecting rod (3) is fixedly installed below the adapter plate (2) and is welded with the bottom surface of the adapter plate (2).

8. The positioning structure for the construction of a foundation bolt of a large equipment according to any one of claims 1 to 7, characterized by: A plurality of positioning through holes are arranged on the adapter plate (2).

9. The large equipment foundation bolt construction positioning structure according to claim 8, characterized by: A adapter shaft (5) is vertically arranged on the top surface of the pre-positioning support, a protruding portion (51) is arranged on the lower outer side wall of the adapter shaft (5), a sleeve (6) is coaxially arranged on the outer side of the adapter shaft (5), the lower end surface of the sleeve (6) is in abutment with the upper end surface of the protruding portion (51), the sleeve (6) can rotate around the adapter shaft (5), and a height detection rod (61) parallel to the horizontal plane is arranged on the sleeve (6).

10. The large equipment foundation bolt construction positioning structure according to claim 9, characterized by: The convex part (51) is a ring plate structure sleeved outside the adapter shaft (5), the outer wall of the ring plate structure is provided with a threaded hole penetrating along the radial direction thereof, a fastening screw (52) is threadedly connected in the threaded hole, and the fastening screw (52) abuts against the adapter shaft (5) to axially position the convex part (51) on the adapter shaft (5).

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