Positioning device used before embedding of foundation bolts of large and medium-sized high-precision equipment foundation

Abstract

The utility model relates to a positioning device for foundation bolts of large and medium-sized high-precision equipment foundations before embedding, which comprises a fixed bottom frame and a movable vertical frame, and the movable vertical frame is movably arranged above the fixed bottom frame; transverse adjusting assemblies used for adjusting the left-right position of the movable vertical frame are further arranged at the corners of the fixed bottom frame, and vertical adjusting assemblies used for adjusting the height position of the movable vertical frame are further arranged at the bottom of the movable vertical frame. Foundation bolts are evenly arranged on the two sides of the movable vertical frame in a penetrating mode, one end of each foundation bolt extends upwards to vertically penetrate through the upper plane of the movable vertical frame and is connected with a protective sleeve, and a height adjusting assembly used for adjusting the height of each foundation bolt is correspondingly arranged on the portion, below the corresponding foundation bolt, of the movable vertical frame. According to the foundation bolt positioning device, the elevation and the position degree of the foundation bolt can be accurately adjusted, the foundation bolt can be prevented from deviating due to impact and pressure under the guarantee of the frame of the positioning device during pouring, so that the installation positioning accuracy of the foundation bolt is effectively improved, and the problem that equipment and the foundation bolt are difficult to install is solved.

Description

Technical Field

[0001] This utility model relates to the field of foundation technology for large equipment installation, and in particular to a positioning device for pre-embedding anchor bolts for foundations of large and medium-sized high-precision equipment. Background Technology

[0002] In the manufacturing industry, large and medium-sized high-precision production equipment, such as steel rolling mills, hot rolling mills for aluminum ingots, and aluminum foil rolling mills, generate impact and vibration loads during operation. Therefore, the installation foundation of this equipment is particularly important. The equipment is typically fixed using multiple anchor bolts, so the quality of the anchor bolt pre-embedding directly affects the ease of installation. High anchor bolt pre-embedding accuracy ensures smooth and natural equipment installation.

[0003] The current equipment foundation installation uses the "reinforced mesh welded anchor bolt method": Generally, after piling and dewatering under the equipment foundation, a concrete pad is first laid, followed by the laying and welding of a reinforcing mesh on the foundation pit pad. Once the equipment centerline and the train centerline are determined, the centerlines of the equipment component anchor bolts are laid out and aligned. After the position and elevation of the anchor bolts are measured, adjusted, and confirmed, they are directly welded to the reinforcing mesh. Then, the precisely positioned anchor bolts, reinforcing mesh, and concrete are grouted once. After the equipment arrives and is installed, fine-tuning is performed, and finally, a second grouting is done on the cavity between the anchor bolts and the lower surface of the equipment base. This process is also commonly used for this type of equipment installation, involving two grouting operations.

[0004] The advantages of this two-stage grouting method are: the foundation grout has a high degree of firmness after solidification, the embedded bolts have strong resistance to impact and vibration loads, and the equipment operates relatively stably even with high power. However, this two-stage grouting method for anchor bolts has certain construction difficulties: namely, the precise positioning and secure fixing of the anchor bolts before the first grouting.

[0005] The specific difficulties in construction are as follows: 1. The positioning and elevation of the anchor bolts on the steel mesh above the foundation layer are inaccurate, which leads to deviations and difficulties in the installation of the equipment after the first grouting. Sometimes it is necessary to enlarge the anchor bolt holes of the equipment base and perform other remedial work. The rework operation is time-consuming and labor-intensive, and sometimes it will seriously affect the equipment installation period and project construction progress.

[0006] 2. If the anchor bolts are not firmly welded to the reinforcing mesh, or if the reinforcing mesh is not firmly fixed as a whole, the flow and impact of the concrete sprayed from the concrete truck hose during the grouting process will cause the anchor bolts to change position. This can easily lead to misalignment, exceeding the adjustment range of the anchor bolt holes on the equipment base. This will cause trouble for the subsequent equipment installation and seriously affect the subsequent equipment installation work. Summary of the Invention

[0007] To address the problem of misalignment in the positioning of anchor bolts during current construction, which leads to difficulties in equipment installation, this utility model provides a pre-embedding positioning device for anchor bolts in the foundations of large and medium-sized high-precision equipment. Before the first grouting, the positioning device reliably positions the anchor bolts, ensuring the accuracy of their final position after grouting. Simultaneously, a steel mesh is tied around the positioning device, and concrete is used to integrate the steel mesh, positioning device, and anchor bolts into a single unit, thereby achieving a reliable foundation for equipment installation.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A positioning device for pre-embedding anchor bolts of foundations for large and medium-sized high-precision equipment is installed on a concrete pad. It includes a fixed base frame and a movable upright frame. The fixed base frame is bolted to the top of the concrete pad to ensure that the fixed base frame is fixed. The movable upright frame is movably installed on the top of the fixed base frame. The horizontal and vertical positions of the movable upright frame can be adjusted. There is a gap between the fixed base frame and the movable upright frame.

[0010] The fixed base frame is also provided with a horizontal adjustment component for adjusting the horizontal position of the movable stand, and the bottom of the movable stand is also provided with multiple sets of vertical adjustment components for adjusting its vertical position.

[0011] The movable support frame includes a movable bottom frame, a movable top frame, and a connecting frame that are welded and fixed together. The fixed bottom frame, the movable bottom frame, and the movable top frame are arranged in parallel from bottom to top. The connecting frame is provided between the movable bottom frame and the movable top frame, and the number of connecting frames is two that are arranged symmetrically.

[0012] Multiple anchor bolts are evenly inserted on both sides of the movable support frame. One end of the anchor bolt extends upward and vertically through the upper plane of the movable support frame, and is connected to a protective sleeve to protect the threaded part of the anchor bolt. A height adjustment component for adjusting the height of the anchor bolt is correspondingly provided on the movable support frame below each anchor bolt.

[0013] Reference block one is set at the center of both sides of the top of the movable frame, and reference block two is set at the center of the other two sides of the top of the movable frame. Reference block two is sleeved on the upper end of the anchor bolt. The upper ends of reference block one and reference block two are pointed to facilitate their use as reference points for positioning devices.

[0014] Furthermore, the fixed bottom frame is a rectangular frame structure, which includes a fixed bottom channel steel one and a fixed bottom channel steel two that are welded and fixed. There are two fixed bottom channel steels one arranged at intervals, and multiple fixed bottom channel steels two are arranged between the two fixed bottom channel steels one. The fixed bottom channel steels two are arranged perpendicular to the fixed bottom channel steels one, which improves the stability of the fixed bottom frame structure.

[0015] Furthermore, a plurality of expansion bolts are evenly arranged on both sides of the fixed bottom frame, and the fixed bottom frame is connected and fixed to the concrete cushion layer through the expansion bolts, which improves the reliability of the installation of the fixed bottom frame; a plurality of expansion bolts are arranged on each fixed bottom channel steel.

[0016] Furthermore, the lateral adjustment components are arranged at the four corners of the fixed bottom frame. The lateral adjustment components include lateral adjustment plates and lateral adjustment bolts with nuts;

[0017] The lateral adjustment plates are bent into a "ㄣ" shape. The horizontal sections of the lateral adjustment plates are connected and fixed to the fixed bottom frame. The lateral adjustment bolts are threadedly connected to the vertical sections of the lateral adjustment plates. The lateral adjustment bolts are horizontally arranged. One end of the lateral adjustment bolt passes through the lateral adjustment plate and abuts against the bottom edge of the movable vertical frame, which is convenient for pushing the movable vertical frame through the lateral adjustment bolts and adjusting its position.

[0018] Furthermore, the cross-section of the movable vertical frame is in a "□" shape, and the connecting vertical frame is perpendicular to the movable bottom frame and the movable top frame.

[0019] Furthermore, the movable bottom frame and the fixed bottom frame have the same structure. The movable bottom frame includes movable bottom channel steel 1 and movable bottom channel steel 2 which are welded and fixed. The number of movable bottom channel steel 1 is two arranged at intervals. A plurality of movable bottom channel steel 2 are arranged between the two movable bottom channel steel 1, and the movable bottom channel steel 2 are arranged perpendicular to the movable bottom channel steel 1.

[0020] Furthermore, the thickness of the movable bottom frame is less than that of the movable top frame. The movable top frame includes movable top channel steel 1 and movable top channel steel 2 which are welded and fixed. The number of movable top channel steel 1 is two arranged at intervals and corresponds to the movable bottom channel steel 1 up and down. A plurality of movable top channel steel 2 are arranged between the two movable top channel steel 1, and the movable top channel steel 2 are arranged perpendicular to the movable top channel steel 1;

[0021] The connecting vertical frame is arranged between the movable top channel steel 1 and the movable bottom channel steel 1 corresponding to each other up and down. The connecting vertical frame includes a plurality of connecting vertical channel steels arranged evenly and a connecting horizontal channel steel. The upper end of each connecting vertical channel steel is connected to the movable top channel steel 1, and the lower end is connected to the movable bottom channel steel 1. The connecting horizontal channel steel is arranged between the plurality of connecting vertical channel steels, and the plurality of connecting vertical channel steels divide the connecting horizontal channel steel into independent multiple segments.

[0022] Furthermore, a plurality of groups of connecting components are evenly arranged on both sides of the bottom of the movable vertical frame. The movable vertical frame is movably connected to the fixed bottom frame through the connecting components. Each group of connecting components includes two connecting bolts. The connecting bolts are arranged between the movable bottom frame and the fixed bottom frame. The movable bottom frame is provided with holes for the connecting bolts to pass through. The diameter of the holes is larger than the diameter of the connecting bolts, providing space for the position offset of the movable vertical frame;

[0023] The vertical adjustment components are evenly arranged on both sides of the movable base frame. The vertical adjustment components are vertical adjustment bolts with nuts. The vertical adjustment bolts are threaded onto the movable base frame. One end of the vertical adjustment bolt passes through the movable base frame and abuts against the upper plane of the fixed base frame, which facilitates the adjustment of the vertical height of the movable stand.

[0024] Furthermore, the anchor bolt is bent into an "L" shape, with the bent part of the anchor bolt forming a hook shape. The vertical section of the anchor bolt passes between the connecting frame and the movable top frame, and the upper end of the vertical section of the anchor bolt passes through the movable top frame. The protective sleeve is a stepped cylindrical foam mold structure. The protective sleeve is fitted onto the upper end of the vertical section of the anchor bolt and rests against the movable top frame, receiving support from the movable top frame.

[0025] The height adjustment assembly is arranged on the connecting frame. The anchor bolts correspond one-to-one with the height adjustment assembly. The height adjustment assembly includes a height adjustment plate and a height adjustment bolt with a nut. The height adjustment plate is arranged horizontally. The height adjustment bolt is threadedly connected to the height adjustment plate. One end of the height adjustment bolt passes vertically upward through the height adjustment plate and abuts against the bend of the anchor bolt, so as to facilitate the adjustment of the vertical height position of the anchor bolt.

[0026] Furthermore, reference block one and reference block two are arranged on the movable top frame. Reference block one is inserted into the movable top frame, and the upper ends of reference block one and reference block two are both conical.

[0027] The beneficial effects of this utility model through the above technical solution are:

[0028] This invention enables precise positioning of pre-installed anchor bolts on the equipment foundation. Based on the fixed base frame and concrete pad, the horizontal adjustment component facilitates adjustment of the left-right position of the movable upright, while the vertical adjustment component facilitates adjustment of its height. Anchor bolts are also installed on the movable upright, and their height can be easily adjusted using a height adjustment component.

[0029] This invention utilizes horizontal adjusting bolts to precisely adjust the parallelism between the center line of the positioning device and the center baseline of the equipment, thereby accurately adjusting the position of the anchor bolts and easily achieving the national standard requirement of ±2mm. Vertical adjusting bolts and height adjusting bolts enable precise adjustment of the anchor bolt elevation, allowing the top elevation of the anchor bolts to meet the national standard requirement of 0 to +20mm. On-site adjustment is simple, convenient, efficient, and quick, making it easier to ensure the pre-embedding accuracy of the anchor bolts.

[0030] The positioning device of this invention is precision-machined in a machining factory outside the construction site. The "internal hole distance" between the bolts is guaranteed by the precision of the machine tool, resulting in low cost and high machining accuracy. During on-site installation, the positioning device is treated as a "whole device," requiring only the adjustment of the two center reference lines of the positioning device and the elevation of each bolt. This saves the time spent adjusting the distance of each bolt relative to the reference line inside the positioning device, greatly shortening the construction period and ensuring construction quality.

[0031] This invention ensures that the anchor bolts do not shift position after concrete pouring. Through multiple expansion bolts and connecting bolts, and the high-quality pre-welding of the positioning device frame before installation, the positioning device and bolt positions and elevations are firmly fixed, ensuring the independence of the positioning device and preventing positional deviation caused by deformation pressure and impact from the reinforcing mesh before and after concrete pouring. During pouring, the positioning device, the surrounding reinforcing mesh, and the anchor bolts are poured together. Due to the high overall structural strength of the positioning device and the anchor bolts installed within it, the impact of the concrete during pouring will not affect the anchor bolts, ensuring the construction quality of the pre-embedded anchor bolts.

[0032] This invention can effectively correct the deviation of anchor bolts after equipment installation. Because a protective sleeve is fitted on the top of the anchor bolt, after concrete pouring, the protective sleeve causes a cylindrical cavity of approximately 200mm to form at the top of the anchor bolt after grouting. Even if the anchor bolt's positional deviation does not exceed 10mm, the upper root of the anchor bolt can be heated with oxygen to make the upper part of the bolt bent and corrected. However, the possibility of this anchor bolt positional deviation is relatively small. Attached Figure Description

[0033] Figure 1 This is an isometric drawing of a positioning device for pre-embedding anchor bolts in the foundation of large and medium-sized high-precision equipment according to this utility model.

[0034] Figure 2 This utility model relates to a pre-embedding positioning device for anchor bolts in the foundations of large and medium-sized high-precision equipment. Figure 1 A schematic diagram of the four reference points in the middle.

[0035] Figure 3 This is a front view of a positioning device for pre-embedding anchor bolts in the foundation of large and medium-sized high-precision equipment according to this utility model.

[0036] Figure 4 This utility model relates to a positioning device for pre-embedding anchor bolts in the foundations of large and medium-sized high-precision equipment. Figure 3 Sectional view of the connecting component.

[0037] Figure 5 This utility model relates to a pre-embedding positioning device for anchor bolts in the foundations of large and medium-sized high-precision equipment. Figure 3A schematic diagram showing the upper and lower parts of the fixed base frame and the movable upright.

[0038] Figure 6 This is a side view of a pre-embedded positioning device for foundation anchor bolts of large and medium-sized high-precision equipment according to this utility model.

[0039] The attached diagram is labeled as follows: 1 Concrete base layer, 2 Fixed base frame, 21 Fixed base channel steel one, 22 Fixed base channel steel two, 3 Movable upright, 4 Expansion bolt, 5 Movable base frame, 51 Movable base channel steel one, 52 Movable base channel steel two, 6 Movable top frame, 61 Movable top channel steel one, 62 Movable top channel steel two, 7 Connecting upright frame, 71 Connecting vertical channel steel, 72 Connecting horizontal channel steel, 81 Connecting bolt, 9 Horizontal adjustment assembly, 91 Horizontal adjustment plate, 92 Horizontal adjustment bolt, 101 Vertical adjustment bolt, 11 Anchor bolt, 12 Protective sleeve, 13 Height adjustment assembly, 131 Height adjustment plate, 132 Height adjustment bolt, 14 Reference block one, 15 Reference block two, 16 Rope, 17 Wire hole. Detailed Implementation

[0040] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings:

[0041] like Figures 1-6 As shown, a positioning device for pre-embedding anchor bolts of foundations for large and medium-sized high-precision equipment is installed on a concrete pad 1. The process involves first excavating a foundation pit, then carrying out pile driving and dewatering operations, and finally pouring a concrete pad 1 with a thickness of about 150mm in the foundation pit.

[0042] The positioning device includes a fixed base frame 2 and a movable upright frame 3. The fixed base frame 2 is a steel planar frame, specifically a rectangular frame structure. The fixed base frame 2 includes two fixed bottom channel steels 21 and two fixed bottom channel steels 22. Two fixed bottom channel steels 21 are spaced apart, and three fixed bottom channel steels 22 are positioned between the two fixed bottom channel steels 21, connecting and fixing them together. The fixed bottom channel steels 22 are arranged perpendicular to the fixed bottom channel steels 21, and their length is greater than the length of the fixed bottom channel steels 21.

[0043] During installation, the fixed base frame 2 is bolted to the concrete pad 1, thereby securing the fixed base frame 2. Specifically, six expansion bolts 4 are evenly distributed on both sides of the fixed base frame 2, with three expansion bolts 4 arranged on each fixed base channel steel 21. In this way, the fixed base frame 2 can be connected and fixed to the concrete pad 1 by the expansion bolts 4. M12 expansion bolts 4 are used.

[0044] A movable support frame 3 is movably installed above the fixed base frame 2. "Movable" here means that, while the fixed base frame 2 is fixed, the lateral position of the movable support frame 3 relative to the fixed base frame 2 is adjustable, and the vertical gap between the movable support frame 3 and the fixed base frame 2 is also adjustable. The movable support frame 3 is a three-dimensional steel structure frame, and its height is much greater than that of the fixed base frame 2, resulting in a gap between the fixed base frame 2 and the movable support frame 3.

[0045] In this embodiment, the movable support frame 3 has a "U"-shaped cross-section and includes a movable bottom frame 5, a movable top frame 6, and a connecting frame 7. The fixed bottom frame 2, movable bottom frame 5, and movable top frame 6 are arranged in parallel from bottom to top. Here, the movable bottom frame 5 and the fixed bottom frame 2 have the same structure. The movable bottom frame 5 includes movable bottom channel steel one 51 and movable bottom channel steel two 52. The number of movable bottom channel steel one 51 is two arranged at intervals, and three movable bottom channel steel two 52 are arranged between the two movable bottom channel steel one 51, connecting and fixing the two movable bottom channel steel one 51 through the movable bottom channel steel two 52. The movable bottom channel steel two 52 are arranged perpendicular to the movable bottom channel steel one 51, and the length of the movable bottom channel steel one 51 is greater than the length of the movable bottom channel steel two 52.

[0046] The thickness of the movable bottom frame 5 is the same as that of the fixed bottom frame 2, and the thickness of the movable bottom frame 5 is less than that of the movable top frame 6. The structure of the movable bottom frame 5 is similar to that of the movable top frame 6. Here, the movable top frame 6 includes movable top channel steel 1 61 and movable top channel steel 2 62. There are two movable top channel steel 1 61 arranged at intervals, and each movable top channel steel 1 61 corresponds vertically to the movable bottom channel steel 1 51. Four movable top channel steel 2 62 are set between the two movable top channel steel 1 61, and the two movable top channel steel 1 61 are connected and fixed by the movable top channel steel 2 62.

[0047] The movable top channel steel 262 is arranged perpendicular to the movable top channel steel 161, and the length of the movable top channel steel 262 is less than the length of the movable top channel steel 161. Furthermore, the fixed bottom channel steel 121, the movable bottom channel steel 151, and the movable top channel steel 161 have the same length; the fixed bottom channel steel 22 and the movable bottom channel steel 252 have the same length, and the length of the movable bottom channel steel 252 is less than the length of the movable top channel steel 262.

[0048] In order to achieve the connection and fixation between the movable bottom frame 5 and the movable top frame 6, a connecting frame 7 is set between the movable bottom frame 5 and the movable top frame 6. There are two connecting frames 7 arranged symmetrically. The connecting frames 7 are perpendicular to the movable bottom frame 5 and the movable top frame 6. The movable bottom frame 5 and the movable top frame 6 can be connected by the connecting frames 7.

[0049] During installation, the connecting frame 7 is arranged between the corresponding movable top channel steel 61 and movable bottom channel steel 51. The connecting frame 7 includes four evenly arranged connecting vertical channel steels 71 and one connecting horizontal channel steel 72. The upper end of each connecting vertical channel steel 71 is connected to the movable top channel steel 61 and the lower end is connected to the movable bottom channel steel 51. The four connecting vertical channel steels 71 can connect and fix the movable top channel steel 61 and the movable bottom channel steel 51.

[0050] Connecting horizontal channel steels 72 are installed between the four connecting vertical channel steels 71 to increase the structural strength of the entire connecting frame 7. The four connecting vertical channel steels 71 divide the connecting horizontal channel steels 72 into three independent sections, and each section of the connecting horizontal channel steel 72 is welded between two adjacent connecting vertical channel steels 71.

[0051] Therefore, we can understand the structure of the fixed base frame 2 and the movable upright frame. During installation, the movable upright frame 3 is movably installed above the fixed base frame 2. Specifically, multiple sets of connectors are evenly arranged on both sides of the bottom of the movable upright frame 3. The movable upright frame 3 is movably connected to the fixed base frame 2 through the connectors. Each movable bottom channel steel 51 is provided with three sets of connectors, and thus the movable base frame 5 is arranged with six sets of connectors. The movable upright frame 3 is connected to the fixed base frame 2 through these six sets of connectors.

[0052] In this embodiment, each set of connectors includes two spaced-apart connecting bolts 81, each with a nut at its end. The connecting bolts 81 are M30 bolts. The connecting bolts 81 pass between the movable base frame 5 and the fixed base frame 2. Specifically, after passing through the movable base channel steel 51 and the fixed base channel steel 21, the connecting bolts 81 are connected to the nuts, thus connecting the fixed base frame 2 and the movable upright 3. It should be noted that both the movable base frame 5 and the fixed base frame 2 have holes for the connecting bolts 81 to pass through. The diameter of the hole in the movable base frame 5 is larger than the diameter of the connecting bolt 81. Therefore, the movable base frame 5 can shift its position relative to the fixed base frame 2, and the connecting bolts 81 do not interfere with the positional shift of the movable base frame 5.

[0053] To allow for adjustment of the left and right positions of the movable upright 3, lateral adjustment components 9 are installed at the corners of the fixed base frame 2 to adjust the horizontal position of the movable upright 3. Specifically, lateral adjustment components 9 are arranged at all four corners of the fixed base frame 2, that is, lateral adjustment components 9 are arranged at the end of each fixed base channel steel 21.

[0054] The lateral adjustment assembly 9 includes a lateral adjustment plate 91 and a lateral adjustment bolt 92 with a nut. The lateral adjustment plate 91 is bent into an "U" shape and consists of a horizontal section and a vertical section. The horizontal section of the lateral adjustment plate 91 is connected and fixed to the fixed bottom channel steel 21 of the fixed base frame 2. The lateral adjustment bolt 92 is threaded onto the vertical section of the lateral adjustment plate 91. The lateral adjustment bolts 92 are arranged horizontally, with one end passing through the lateral adjustment plate 91 and pressing tightly against the bottom edge of the movable upright 3, that is, against the edge of the movable bottom channel steel 51. The nut on the lateral adjustment bolt 92 is close to the head of the lateral adjustment bolt 92. This nut has a locking function. After tightening the nut, it presses tightly against the lateral adjustment plate 91, thereby preventing the lateral adjustment bolt 92 from loosening.

[0055] The adjustment procedure for the left and right positions of the movable stand 3 is as follows: First, loosen the four horizontal adjusting bolts 92. Then, according to the desired direction of movement of the movable stand 3, tighten the corresponding horizontal adjusting bolts 92. Use the horizontal adjusting bolts 92 to push the movable stand 3 to move. After moving it to the desired position, tighten the remaining horizontal adjusting bolts 92. Use the four horizontal adjusting bolts 92 to restrict and fix the movable stand 3. Finally, tighten the nut on each horizontal adjusting bolt 92.

[0056] To achieve height adjustment of the movable stand 3, multiple sets of vertical adjustment components are installed at the bottom of the movable stand 3 for adjusting its vertical position. The vertical adjustment components are evenly distributed on both sides of the movable base frame 5. Here, three sets of vertical adjustment components are arranged on each fixed bottom channel steel 21. The vertical adjustment components are vertical adjustment bolts 101 with nuts. The structure and principle of the vertical adjustment components are the same as those of the horizontal adjustment components 9.

[0057] The vertical adjusting bolt 101 is arranged between two connecting bolts 81 in a set. The vertical adjusting bolt 101 is threadedly connected to the movable bottom channel steel 51 of the movable bottom frame 5. The vertical adjusting bolt 101 is an M30 bolt. One end of the vertical adjusting bolt 101 passes through the movable bottom frame 5 and abuts against the upper plane of the fixed bottom frame 2, that is, abuts against the fixed bottom channel steel 21.

[0058] The height adjustment operation of the movable upright 3 is as follows: When the connecting bolt 81 is not tightened, turning the vertical adjusting bolt 101 will change the gap between the movable upright 3 and the fixed base frame 2. After the gap is changed, the nut on the vertical adjusting bolt 101 can be tightened to lock the vertical adjusting bolt 101. Finally, tightening the connecting bolt 81 will ensure that a fixed gap is maintained between the movable upright 3 and the fixed base frame 2.

[0059] In this way, the left and right position of the movable vertical frame 3 can be changed by the horizontal adjustment bolt 92, and the height position of the movable vertical frame 3 can be changed by the vertical adjustment bolt 101. Six anchor bolts 11 are evenly penetrated on both sides of the movable vertical frame 3. The anchor bolts 11 are bent into an "L" shape, and the bent part of the anchor bolts 11 is in a circular arc-shaped hook. The structure of the anchor bolts 11 is the prior art and will not be elaborated here. The diameter of the anchor bolts 11 is M30.

[0060] When installing the anchor bolts 11, one end of the anchor bolts 11 extends upward vertically through the upper plane of the movable vertical frame 3 and is connected with a protective sleeve 12. Specifically, three anchor bolts 11 are arranged on each side connection vertical frame 7. The vertical section of the anchor bolts 11 is penetrated between the connection vertical frame 7 and the movable top frame 6. The upper end of the vertical section of the anchor bolts 11 passes through the movable top frame 6, that is, the anchor bolts 11 are penetrated between a section of connecting horizontal channel steel 72 and the movable top channel steel 61.

[0061] A protective sleeve 12 is sleeved on the end of the anchor bolt 11 extending out of the movable top channel steel 61. The protective sleeve 12 is a stepped cylindrical foam mold structure, that is, the protective sleeve 12 in the shape of a stepped cylinder is made of a foam mold. Here, the cross-section of the protective sleeve 12 is in a "convex" shape. The protective sleeve 12 is sleeved on the upper end of the vertical section of the anchor bolt 11, and the protective sleeve 12 abuts against the movable top frame 6. Furthermore, the protective sleeve 12 is supported by the movable top channel steel 61. The protective sleeve 12 can ensure that the threaded part of the anchor bolt 11 is not contaminated during concrete pouring. At the same time, when the initial forming is completed after pouring, the protective sleeve 12 can be removed. In this way, a cavity is formed around the upper end of the anchor bolt 11, which can be used for minor correction when there is a deviation between the position of the anchor bolt 11 and the equipment base in the later stage.

[0062] After the anchor bolts 11 are penetrated and installed, the height position of the anchor bolts 11 is adjustable. Specifically, a height adjustment component 13 for adjusting the height of the anchor bolts 11 is correspondingly arranged on the movable vertical frame 3 below each anchor bolt 11. The height adjustment components 13 are arranged on the connection vertical frame 7, and the number of the height adjustment components 13 is six. The anchor bolts 11 and the height adjustment components 13 are in one-to-one correspondence up and down. The structure and principle of the height adjustment component 13 are similar to those of the horizontal adjustment component 9. The height adjustment component 13 includes a height adjustment plate 131 and a height adjustment bolt 132 with a nut. The height adjustment plate 131 is horizontally arranged, and the height adjustment bolt 132 is threadedly connected to the height adjustment plate 131. The height adjustment bolt 132 is vertically arranged. One end of the height adjustment bolt 132 vertically passes through the height adjustment plate 131 and abuts against the bent part of the anchor bolt 11. The anchor bolt 11 is supported by the height adjustment bolt 132. By turning the height adjustment bolt 132, the up and down height position of the anchor bolt 11 can be changed. At the same time, after tightening the nut自带 on the height adjustment bolt 132, the locking of the height adjustment bolt 132 can be achieved.

[0063] In this embodiment, in order to improve the accuracy of the installation position of the entire positioning device, it is necessary to ensure the consistency between the center line of the positioning device and the center reference line of the equipment. Here, reference block 14 is set at the center position of both sides of the top of the movable frame 3, and reference block 25 is set at the center position of the other two sides of the top of the movable frame 3. That is, reference block 14 and reference block 25 are arranged on the movable top frame 6.

[0064] During installation, reference block 14 is inserted into the movable top frame 6. A hole is drilled at the center of the movable top channel steel 62. The lower end of reference block 14 is stepped, and it is inserted into this hole. Since there is an anchor bolt 11 at the center of the movable top channel steel 61, reference block 15 is fitted onto the upper end of the anchor bolt 11 during installation. That is, reference block 15 has an internal hole, allowing it to fit over the anchor bolt 11 and rest against the protective sleeve 12.

[0065] Both reference block 14 and reference block 2 15 are cylinders, and their upper ends are pointed, meaning their upper ends are conical. Using the tips of reference blocks 14 and 2 15 as reference points, the positioning device has four reference points: M, N, P, and Q. The positional accuracy of these four reference points is ensured by machining precision. The line connecting reference points M and N is the center line of the positioning device, and the line connecting reference points P and Q is also the center line of the positioning device.

[0066] By using measuring instruments such as a theodolite to emit a laser beam to illuminate the reference points of two reference blocks 14 or 15, the coincidence or parallelism between the center line of the positioning device and the center reference line of the equipment is determined in the manner of "two points forming a line".

[0067] A 0.8mm nylon cord 16 can be threaded between the two corresponding reference blocks 14 and 15. A through-hole 17, 1mm in diameter, is provided on both reference blocks 14 and 15. The cord 16 is threaded between the two corresponding through-holes, ensuring that the cords 16 between the two reference blocks 14 and 15 are perpendicular. This method, based on the principle of "two points forming a line," determines the coincidence or parallelism between the center line of the positioning device and the center reference line of the equipment.

[0068] When using this positioning device for the pre-embedding of anchor bolts 11, the following construction steps are required:

[0069] Step 1: After driving piles and dewatering under the equipment foundation, lay a 150mm thick concrete pad layer 1; during this process, fabricate a positioning device, placing the anchor bolts 11 into the positioning device. After the positioning device is fabricated, maintain a movable relationship between the fixed base frame 2 and the movable upright frame to facilitate subsequent adjustments to the position of the movable upright frame.

[0070] Step 2: Hoist the positioning device onto the concrete base 1, and connect and fix the fixed base frame 2 to the concrete base 1 using expansion bolts 4. Operate the vertical adjustment bolt 101 in the vertical adjustment assembly to control the elevation difference between the fixed base frame 2 and the movable upright 3 to ≤5mm, that is, the gap between the fixed base frame 2 and the movable upright 3 is less than or equal to 5mm. Then operate the height adjustment bolt 132 in the height adjustment assembly 13 to control the top elevation of the anchor bolt 11 to be 0~+20mm.

[0071] Step 3: Use a theodolite to calibrate the positioning device. First, use the theodolite to find the center baseline of the equipment. Then, operate the theodolite to emit a laser to illuminate the tips of the two reference blocks 14, i.e., illuminate reference points M and N, or simultaneously illuminate the tips of the two reference blocks 15, i.e., illuminate reference points P and Q.

[0072] If the laser line coincides with the center line of the positioning device, it indicates that the position of the movable stand 3 has been successfully adjusted. If the adjustment is unsuccessful, operate the horizontal adjustment component 9 to adjust the left and right positions of the movable stand 3, ensuring that the center line of the positioning device coincides with or is parallel to the center reference line of the equipment and that the spacing is appropriate, with a parallelism of ≤0.5mm / m.

[0073] Alternatively, the positioning device can be calibrated using a rope 16. If the equipment center baseline has already been set up, the rope 16 can be passed through the corresponding thread hole 17, and the center line of the positioning device can be manually pulled out. The center line of the positioning device can be compared with the equipment center baseline. The overlap of the two lines should be ≤1mm to meet the engineering accuracy requirements.

[0074] Step 4: After the elevation and position of the positioning device are accurately adjusted, tighten and lock the horizontal adjustment component 9, the vertical adjustment component, the height adjustment component 13, and the connecting parts to ensure that the horizontal adjustment bolt 92, the vertical adjustment bolt 101, the height adjustment bolt 132, the connecting bolt 81, and the expansion bolt 4 are securely fastened. Spot welding may be used for fixing if necessary.

[0075] Step 5: Tie the reinforcing mesh around the positioning device to embed the positioning device into the mesh. The mesh and positioning device are not connected; that is, they are not connected by binding or welding. This avoids the impact and pressure from the deformation of the surrounding mesh during concrete pouring. Then, concrete is poured to form the positioning device, reinforcing mesh, and anchor bolts 11, thus achieving one-time grouting of the anchor bolts 11. During grouting, the concrete is poured up to the stepped change position of the protective sleeve 12.

[0076] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A large and medium-sized high-precision equipment foundation anchor bolt pre-burying front positioning device installed on a concrete cushion (1), characterized in that, It includes a fixed bottom frame (2) and a movable vertical frame (3). The fixed bottom frame (2) is connected to the concrete cushion layer (1) by bolts. The movable vertical frame (3) is movably arranged above the fixed bottom frame (2), and there is a gap between the fixed bottom frame (2) and the movable vertical frame (3). At the corners of the fixed bottom frame (2), a lateral adjustment component (9) for adjusting the left - right horizontal position of the movable vertical frame (3) is also provided. At the bottom of the movable vertical frame (3), multiple vertical adjustment components for adjusting its own up - down height position are also provided. The movable vertical frame (3) includes a movable bottom frame (5), a movable top frame (6) and connecting vertical frames (7). The fixed bottom frame (2), the movable bottom frame (5) and the movable top frame (6) are arranged in parallel from bottom to top in sequence. The connecting vertical frames (7) are arranged between the movable bottom frame (5) and the movable top frame (6), and the number of connecting vertical frames (7) is two and they are symmetrically arranged. On both sides of the movable vertical frame (3), multiple anchor bolts (11) are evenly penetrated. One end of the anchor bolt (11) extends upward vertically through the upper plane of the movable vertical frame (3) and is connected with a protective sleeve (12). Corresponding to each anchor bolt (11) below, a height adjustment component (13) for adjusting the height of the anchor bolt (11) is provided on the movable vertical frame (3). At the center positions of both sides of the top of the movable vertical frame (3), reference blocks one (14) are provided. At the center positions of the remaining two sides of the top of the movable vertical frame (3), reference blocks two (15) are provided. The reference block two (15) is sleeved on the upper end of the anchor bolt (11). The upper ends of the reference block one (14) and the reference block two (15) are both pointed, forming reference points.

2. The pre-locating device for embedding foundation bolts of large and medium-sized high-precision equipment according to claim 1, characterized in that, The fixed bottom frame (2) is of a rectangular frame structure. The fixed bottom frame (2) includes two fixed bottom channel steels one (21) arranged at intervals. Between the two fixed bottom channel steels one (21), multiple fixed bottom channel steels two (22) are provided. The fixed bottom channel steels two (22) are arranged perpendicular to the fixed bottom channel steels one (21).

3. The pre-locating device for embedding foundation bolts of large and medium-sized high-precision equipment according to claim 2, characterized in that, On both sides of the fixed bottom frame (2), multiple expansion bolts (4) are evenly provided. The fixed bottom frame (2) is connected and fixed to the concrete cushion layer (1) through the expansion bolts (4). Multiple expansion bolts (4) are arranged on each fixed bottom channel steel one (21).

4. The pre-locating device for embedding foundation bolts of large and medium-sized high-precision equipment according to claim 2, characterized in that, The lateral adjustment components (9) are arranged at the four corners of the fixed bottom frame (2). The lateral adjustment component (9) includes a lateral adjustment plate (91) and a lateral adjustment bolt (92) with a nut. The lateral adjustment plate (91) is bent into an "L" shape. The horizontal section of the lateral adjustment plate (91) is connected and fixed to the fixed bottom frame (2). The lateral adjustment bolt (92) is thread - connected to the vertical section of the lateral adjustment plate (91). The lateral adjustment bolts (92) are arranged horizontally. One end of the lateral adjustment bolt (92) passes through the lateral adjustment plate (91) and abuts against the bottom edge of the movable vertical frame (3).

5. The pre-locating device for embedding foundation bolts of large and medium-sized high-precision equipment according to claim 1, characterized in that, The cross - section of the movable vertical frame (3) is in a "square" shape, and the connecting vertical frames (7) are perpendicular to the movable bottom frame (5) and the movable top frame (6).

6. The large and medium-sized high-precision equipment foundation anchor bolt pre-burying front positioning device according to claim 1, characterized in that, The movable bottom frame (5) and the fixed bottom frame (2) have the same structure. The movable bottom frame (5) includes a movable bottom channel steel one (51) and a movable bottom channel steel two (52). The number of movable bottom channel steel one (51) is two arranged at intervals. Multiple movable bottom channel steel two (52) are arranged between the two movable bottom channel steel one (51). The movable bottom channel steel two (52) is arranged perpendicular to the movable bottom channel steel one (51).

7. The pre-locating device for embedding foundation bolts of large and medium-sized high-precision equipment according to claim 6, characterized in that, The thickness of the movable bottom frame (5) is less than that of the movable top frame (6). The movable top frame (6) includes a movable top channel steel one (61) and a movable top channel steel two (62). The number of movable top channel steel one (61) is two arranged at intervals and corresponds vertically to the movable bottom channel steel one (51). Multiple movable top channel steel two (62) are arranged between the two movable top channel steel one (61). The movable top channel steel two (62) is arranged perpendicular to the movable top channel steel one (61). The connecting frame (7) is arranged between the corresponding movable top channel steel (61) and movable bottom channel steel (51). The connecting frame (7) includes multiple connecting vertical channel steels (71) and one connecting horizontal channel steel (72) evenly arranged. The upper end of each connecting vertical channel steel (71) is connected to the movable top channel steel (61), and the lower end is connected to the movable bottom channel steel (51). The connecting horizontal channel steel (72) is arranged between the multiple connecting vertical channel steels (71). The multiple connecting vertical channel steels (71) divide the connecting horizontal channel steel (72) into independent segments.

8. The positioning device for pre-embedding anchor bolts in the foundation of large and medium-sized high-precision equipment according to claim 1, characterized in that, The movable support frame (3) has multiple sets of connectors evenly arranged on both sides of its bottom. The movable support frame (3) is movably connected to the fixed bottom frame (2) through the connectors. Each set of connectors includes two connecting bolts (81). The connecting bolts (81) are inserted between the movable bottom frame (5) and the fixed bottom frame (2). Holes for the connecting bolts (81) to pass through are opened on the movable bottom frame (5). The diameter of the holes is larger than the diameter of the connecting bolts (81). The vertical adjustment components are evenly arranged on both sides of the movable base frame (5). The vertical adjustment components are vertical adjustment bolts (101) with nuts. The vertical adjustment bolts (101) are threaded onto the movable base frame (5). One end of the vertical adjustment bolts (101) passes through the movable base frame (5) and abuts against the upper plane of the fixed base frame (2).

9. The large and medium-sized high-precision equipment foundation anchor bolt pre-burying front positioning device according to claim 1, characterized in that, The anchor bolt (11) is bent into an "L" shape, and the bent part of the anchor bolt (11) is hook-shaped. The vertical section of the anchor bolt (11) passes between the connecting frame (7) and the movable top frame (6), and the upper end of the vertical section of the anchor bolt (11) passes through the movable top frame (6). The protective sleeve (12) is a stepped cylindrical foam mold structure. The protective sleeve (12) is fitted on the upper end of the vertical section of the anchor bolt (11), and the protective sleeve (12) abuts against the movable top frame (6). The height adjustment assembly (13) is arranged on the connecting frame (7). The anchor bolts (11) correspond one-to-one with the height adjustment assembly (13). The height adjustment assembly (13) includes a height adjustment plate (131) and a height adjustment bolt (132) with a nut. The height adjustment plate (131) is arranged horizontally. The height adjustment bolt (132) is threaded on the height adjustment plate (131). One end of the height adjustment bolt (132) passes vertically upward through the height adjustment plate (131) and abuts against the bend of the anchor bolt (11).

10. The pre-locating device for foundation bolts of large and medium-sized high-precision equipment according to claim 1, characterized in that, The reference block one (14) and reference block two (15) are arranged on the movable top frame (6). Reference block one (14) is inserted into the movable top frame (6). The upper ends of reference block one (14) and reference block two (15) are both conical.

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