A flatness and position adjustment device and method for the installation of seismic isolation bearings

Abstract

The present invention discloses a flatness and position adjustment device and method for the installation of seismic isolation bearings. The adjustment device includes a positioning embedded plate, a height adjustment mechanism, and a horizontal position adjustment mechanism. The positioning embedded plate is supported on the height adjustment mechanism, and the height adjustment mechanism adjusts the elevation and flatness of the positioning embedded plate in the vertical direction. The lower part of the height adjustment mechanism is fixed on the steel reinforcement cage of the lower pier of the seismic isolation bearing. The horizontal position adjustment mechanism is installed on the height adjustment mechanism, and the horizontal position adjustment mechanism passes through the auxiliary positioning holes provided on the positioning embedded plate, and adjusts the left-right position and front-back position of the positioning embedded plate in the horizontal plane. The structure of the present invention is simple, with few embedded parts, easy to install, accurate in adjustment, and can achieve precise adjustment and rapid positioning of the installation of seismic isolation bearings.

Description

Technical Field

[0001] The present invention relates to the technical field of seismic isolation for building structures, and particularly to a device and method for adjusting the flatness and position of a seismic isolation bearing during installation. Background Art

[0002] Seismic isolation technology is to isolate the transfer of seismic energy to the superstructure by setting seismic isolation bearings at the lower part or between floors of a building, extend the natural vibration period of the superstructure, and ultimately reduce the seismic response of the superstructure, meet the seismic fortification requirements, and ensure the safety of the building structure. At present, seismic isolation bearings have been applied in many actual engineering projects.

[0003] The installation accuracy of seismic isolation bearings affects their service performance. To meet the high requirements for the installation accuracy of seismic isolation bearings, the method of installing positioning embedded plates is often used in construction to accurately control the installation flatness, installation elevation, and installation position. Currently, the traditional method of installing positioning embedded plates is to weld short reinforcing bars to assist in positioning on the steel reinforcement cage of the bottom pier of the plate. This method has a narrow construction space and a large operation difficulty, and the position and length of the reinforcing bars are inconvenient to adjust after welding, resulting in low installation efficiency. Some technicians have also proposed auxiliary devices for the construction of seismic isolation bearings, but these devices have problems such as complex structures, narrow construction operation spaces, and large volumes of embedded structures. There is a lack of lightweight devices and methods in the prior art that can achieve rapid and accurate positioning of the installation of seismic isolation bearings. Summary of the Invention

[0004] In view of this, the present invention provides a device and method for adjusting the flatness and position of a seismic isolation bearing during installation, which has a simple structure, few embedded parts, is easy to install, has precise adjustment, and can achieve precise adjustment and rapid positioning of the installation of the seismic isolation bearing.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A device for adjusting the flatness and position of a seismic isolation bearing during installation includes a positioning embedded plate, a height adjustment mechanism, and a horizontal position adjustment mechanism;

[0007] The positioning embedded plate is supported on the height adjustment mechanism, and the height adjustment mechanism adjusts the elevation and flatness of the positioning embedded plate in the vertical direction. The lower part of the height adjustment mechanism is fixed on the steel reinforcement cage of the lower pier of the seismic isolation bearing; the horizontal position adjustment mechanism is installed on the height adjustment mechanism, and the horizontal position adjustment mechanism passes through the auxiliary positioning holes provided on the positioning embedded plate to adjust the left - right position and front - back position of the positioning embedded plate in the horizontal plane.

[0008] Further, there are four height adjustment mechanisms, four horizontal position adjustment mechanisms, and four auxiliary positioning holes, all located in the middle of the border of the positioning embedded plate and perpendicular to each other with respect to the connection line of two opposite auxiliary positioning holes. The auxiliary positioning holes are square; the four horizontal position adjustment mechanisms are divided into two groups, with two opposite horizontal position adjustment mechanisms in one group, respectively used to adjust the position of the positioning embedded plate in the left-right direction or the front-back direction.

[0009] Further, the height adjustment mechanism includes a screw rod and a special-shaped nut. The special-shaped nut has protruding arm structures on both sides of the nut; the length of the special-shaped nut is greater than the diagonal length of the auxiliary positioning hole.

[0010] Further, the horizontal position adjustment mechanism includes an L-shaped rod, a steel plate, and a limit nut;

[0011] The vertical part of the L-shaped rod is threadedly connected to the height adjustment mechanism through a positioning nut. The horizontal part of the L-shaped rod faces upward and is threadedly connected to the limit nut; the steel plate is sleeved on the limit nut, and the lower end of the steel plate extends into the auxiliary positioning hole; the two horizontal parts of each group of horizontal position adjustment mechanisms point in the same direction, and the axis direction of the horizontal part is the same as its adjustment direction.

[0012] Further, the steel plate is provided with an oblong hole for cooperating with the limit nut;

[0013] The limit nut includes two hexagonal nuts and a circular nut. The two hexagonal nuts are fixed at both ends of the circular nut. The outer diameter of the hexagonal nut is greater than the outer diameter of the circular nut, and the hole diameter of the hexagonal nut is the same as the hole diameter of the circular nut; the outer diameter of the circular nut is smaller than the width of the oblong hole, and the length of the circular nut is greater than the thickness of the steel plate.

[0014] Further, the positioning embedded plate is also provided with a casting exhaust hole and an anchor bar installation hole. The casting exhaust hole is circular and located at the center of the positioning embedded plate; the anchor bar installation holes are arranged at the four corners of the positioning embedded plate for installing the embedded anchor bars of the isolation bearing, and their positions and hole diameters are the same as the installation holes on the bottom plate of the isolation bearing.

[0015] A method for adjusting the flatness and position of an isolation bearing installation, using the above adjustment device. The adjustment method includes the following steps:

[0016] Step 1, assemble the height adjustment mechanism and fix the lower part of the height adjustment mechanism on the reinforcement cage of the lower pier of the isolation bearing;

[0017] Step 2, place the positioning embedded plate on the height adjustment mechanism and adjust the elevation and flatness of the positioning embedded plate through the height adjustment mechanism;

[0018] Step 3: Assemble the horizontal position adjustment mechanism, install it on the height adjustment mechanism, and let the horizontal position adjustment mechanism pass through the auxiliary positioning holes provided on the positioning embedded plate;

[0019] Step 4: Adjust the left - right position and front - back position of the positioning embedded plate in the horizontal plane through the horizontal position adjustment mechanism until the horizontal position meets the installation accuracy;

[0020] Step 5: Remove the horizontal position adjustment mechanism.

[0021] Further, the specific content of Step 2 is as follows:

[0022] Step 201: Place the positioning embedded plate on the special - shaped nut;

[0023] Step 202: Measure the elevation and flatness of the positioning embedded plate;

[0024] Step 203: According to the measurement results, rotate the special - shaped nut through the auxiliary positioning hole above the positioning embedded plate to adjust its height, thereby adjusting the elevation and flatness of the positioning embedded plate, and continuously adjust until the installation accuracy requirements are met.

[0025] Further, the specific assembly and installation process of Step 3 is as follows:

[0026] Step 301: Insert the round nut into the oblong hole of the steel plate, and coaxially weld two hex nuts at both ends of the round nut to form a limit nut;

[0027] Step 302: Install the steel plate on the horizontal part of the L - shaped rod by rotating the limit nut, thereby assembling the horizontal position adjustment mechanism;

[0028] Step 303: Lift the steel plate. At this time, the lower edge of the steel plate is above the positioning embedded plate, and fix the horizontal position adjustment mechanism at the upper end of the screw by screwing the positioning nut;

[0029] Step 304: Measure the horizontal position of the positioning embedded plate, initially judge the adjustment direction of the positioning embedded plate in the horizontal plane, and rotate the positioning nut to adjust the pointing direction of the horizontal parts of the two groups of horizontal position adjustment mechanisms. The axis direction of the horizontal part is consistent with its adjustment direction;

[0030] Step 305: Adjust the position of the steel plate so that the lower edge of the steel plate extends into the auxiliary positioning hole of the positioning embedded plate.

[0031] Further, the specific adjustment method of Step 4 is as follows:

[0032] Step 401: Rotate the limit nut to drive the steel plate to move. The steel plate squeezes the hole wall of the auxiliary positioning hole to adjust the left - right position and front - back position of the positioning embedded plate in the horizontal plane;

[0033] Step 402: Measure the horizontal position of the embedded plate for positioning, and continuously adjust the limit nuts until the horizontal position meets the installation accuracy requirements.

[0034] Beneficial effects:

[0035] 1. For the flatness and position adjustment device for the installation of seismic isolation bearings provided by the present invention, the number of parts embedded in the concrete is small and the cost is low. The parts not embedded in the concrete (horizontal position adjustment mechanism) can be disassembled and reused. The adjustment device of the present invention has fewer embedded parts, a simple structure, and convenient construction, and can quickly and accurately adjust the height, flatness, and position within the horizontal plane of the positioning embedded plate.

[0036] 2. The number of auxiliary positioning holes of the present invention is limited to four, the shape is limited to a square, and the positions of the four positioning holes are limited to be evenly and symmetrically arranged, so as to achieve the purpose of precise positioning of the adjusted position.

[0037] 3. The present invention only needs to install the screw in the area of the auxiliary positioning holes, without the need for precise positioning of the screw, which greatly reduces the installation difficulty of the device of the present invention and has good adaptability to different forms of lower steel cages.

[0038] 4. When adjusting the height and flatness of the positioning embedded plate, the present invention can rotate the special-shaped nut through the auxiliary positioning holes above the positioning plate, avoiding operations in the narrow spaces below or on the side of the positioning embedded plate, reducing the difficulty of position adjustment, and improving the construction efficiency.

[0039] 5. The steel plate of the present invention is provided with oblong holes. When installing the horizontal position adjustment mechanism, the lower edge of the steel plate can be lifted above the positioning embedded plate, without interference with the positioning embedded plate, facilitating the installation of the positioning nuts and screws.

[0040] 6. The device provided by the present invention is composed of common components such as screws, nuts, and steel plates. These component materials are easily obtained and the maintenance is simple. Therefore, the manufacturing cost of the device is low and it is easy to produce and promote, and has good application prospects. Description of the drawings

[0041] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0042] Figure 2 It is the front view of the overall structure of the present invention.

[0043] Figure 3 It is the top view of the positioning embedded plate of the present invention.

[0044] Figure 4 It is a schematic diagram of the structure of the height adjustment mechanism of the present invention.

[0045] Figure 5Schematic structural diagram of the horizontal position adjustment mechanism of the present invention.

[0046] Figure 6 Schematic structural diagram of the L-shaped rod member of the present invention.

[0047] Figure 7 Schematic structural diagram of the steel plate of the present invention.

[0048] Figure 8 Schematic structural diagram of the limit nut of the present invention.

[0049] Among them, 1 - positioning embedded plate; 11 - auxiliary positioning hole; 12 - anchor bar installation hole; 13 - casting exhaust hole; 21 - screw; 22 - special-shaped nut; 31 - L-shaped rod member; 311 - positioning nut; 32 - steel plate; 321 - oblong hole; 33 - limit nut; 331 - hexagonal nut; 332 - round nut. Specific embodiments

[0050] The present invention will be described in detail below with reference to the accompanying drawings and by way of examples.

[0051] The present invention provides a flatness and position adjustment device for the installation of seismic isolation bearings, including a positioning embedded plate 1, a height adjustment mechanism, and a horizontal position adjustment mechanism.

[0052] The positioning embedded plate 1 is embedded in the top surface of the concrete pier, used to determine the elevation of the top surface of the concrete pier, ensure the horizontality of the pier top surface, and determine the installation position of the embedded anchor bars of the seismic isolation bearing during concrete pouring. The positioning embedded plate 1 is supported on the height adjustment mechanism, and the height adjustment mechanism adjusts the elevation and flatness of the positioning embedded plate 1 in the vertical direction. The lower part of the height adjustment mechanism is fixed on the lower pier of the seismic isolation bearing. The horizontal position adjustment mechanism is installed on the height adjustment mechanism, and the horizontal position adjustment mechanism passes through the auxiliary positioning holes 11 provided on the positioning embedded plate 1, and adjusts the left-right position and front-back position of the positioning embedded plate 1 in the horizontal plane.

[0053] As Figure 1 、 Figure 2 shown, in this embodiment, there are four height adjustment mechanisms, four horizontal position adjustment mechanisms, four auxiliary positioning holes 11. The auxiliary positioning holes 11 are square, evenly and symmetrically distributed along the four sides of the positioning embedded plate 1, are all located in the middle of the border of the positioning embedded plate 1, and the connection lines of the opposite two auxiliary positioning holes 11 are perpendicular to each other; the four horizontal position adjustment mechanisms are divided into two groups, with two opposite horizontal position adjustment mechanisms as a group. One group is used to adjust the position of the positioning embedded plate 1 in the left-right direction, and one group is used to adjust the position of the positioning embedded plate 1 in the front-back direction.

[0054] As Figure 3As shown in the figure, the positioning embedded plate 1 is also provided with a pouring exhaust hole 13 and an anchor bar installation hole 12. The pouring exhaust hole 13 is circular and located at the center of the positioning embedded plate 1, which is used for pouring concrete and discharging air bubbles when vibrating the concrete. The size and shape of the pouring exhaust hole 13 can be set according to needs; several anchor bar installation holes 12 are arranged at the four corners of the positioning embedded plate 1, which are used for installing the embedded anchor bars of the isolation bearing, and their positions and hole diameters are the same as the installation holes on the bottom plate of the isolation bearing.

[0055] The height adjustment mechanism is located below the positioning embedded plate 1. As Figure 4 shown, each height adjustment mechanism includes a screw 21 and a special-shaped nut 22. The special-shaped nut 22 has a protruding arm structure on both sides of the nut. In actual use, the screw 21 is welded to the steel reinforcement cage of the concrete pier, and the special-shaped nut 22 is screwed onto the screw 21, and the heights of the four special-shaped nuts 22 are roughly adjusted to be similar; the positioning embedded plate 1 is placed on the special-shaped nut 22, and the special-shaped nut 22 supports the positioning embedded plate 1.

[0056] When installing the screw 21, it is necessary to limit its position within the range of the auxiliary positioning hole 11, but strict centering is not required, which reduces the positioning difficulty of the screw 21 installation; when screwing and installing, the screw 21 is extended a certain length out of the special-shaped nut 22 to facilitate the installation of the subsequent horizontal position adjustment mechanism; the length of the special-shaped nut 22 is greater than the diagonal length of the positioning embedded hole, so that the positioning embedded plate 1 can be erected on the special-shaped nut 22 in any position within the range of the auxiliary positioning hole 11.

[0057] In actual use, the height of the special-shaped nut 22 can be rotated to adjust its height, thereby driving the height change of the positioning embedded plate 1; use measuring tools to measure the flatness and elevation of the positioning embedded plate 1, and repeatedly adjust the height of the special-shaped nut 22 based on the measurement results until the elevation and flatness of the positioning embedded plate 1 meet the installation accuracy requirements. When screwing the special-shaped nut 22, the operation can be carried out above the positioning embedded plate 1 and screwed and adjusted through the auxiliary positioning hole 11, without the need to operate in the narrow space below the positioning embedded plate 1, which reduces the construction difficulty.

[0058] As Figure 5 shown, the horizontal position adjustment mechanism includes an L-shaped rod 31, a steel plate 32 and a limit nut 33; as Figure 6 shown, the vertical part of the L-shaped rod 31 is provided with an external thread and is threadedly connected to the upper end of the screw 21 of the height adjustment mechanism through a positioning nut 311. The horizontal part of the L-shaped rod 31 faces upward, and the horizontal part is provided with an external thread and is threadedly connected to the limit nut 33; the steel plate 32 is sleeved on the limit nut 33; as Figure 1 、 Figure 2As shown, the lower end of the steel plate 32 extends into the auxiliary positioning hole 11; the two horizontal parts of each set of horizontal position adjustment mechanisms point in the same direction, and the axial direction of the horizontal part is the same as its adjustment direction.

[0059] As Figure 7 shown, the steel plate 32 is provided with an oblong hole 321 for cooperating with the limit nut 33.

[0060] As Figure 8 shown, the limit nut 33 includes two hexagonal nuts 331 and a circular nut 332. The two hexagonal nuts 331 are fixed at both ends of the circular nut 332. The outer diameter of the hexagonal nut 331 is greater than the outer diameter of the circular nut 332, and the hole diameter of the hexagonal nut 331 is the same as the hole diameter of the circular nut 332; the outer diameter of the circular nut 332 is smaller than the width of the oblong hole 321, and the length of the circular nut 332 is greater than the thickness of the steel plate 32.

[0061] The method steps for the flatness and position adjustment of the seismic isolation bearing installation are as follows:

[0062] Step 1: Assemble the height adjustment mechanism and fix the lower part of the height adjustment mechanism on the steel reinforcement cage of the lower pier of the seismic isolation bearing; the specific process is:

[0063] Step 101: Screw the special-shaped nut 22 onto the screw rod 21 to assemble the height adjustment mechanism, and the screw rod 21 extends a certain length out of the special-shaped nut 22.

[0064] Step 102: Weld and install the screw rod 21 on the steel reinforcement cage of the lower pier where the seismic isolation bearing is required. When installing the screw rod 21, precise positioning is not required, and only the position of the screw rod 21 needs to be limited within the auxiliary positioning hole 11.

[0065] Step 2: Place the positioning embedded plate 1 on the height adjustment mechanism and adjust the elevation and flatness of the positioning embedded plate 1 through the height adjustment mechanism; the specific process is:

[0066] Step 201: Place the positioning embedded plate 1 on the special-shaped nut 22.

[0067] Step 202: Measure the elevation and flatness of the positioning embedded plate 1. When measuring, use a level measuring device such as a spirit level.

[0068] Step 203: According to the measurement results, rotate the special-shaped nut 22 to adjust its height. The special-shaped nut 22 can be rotated through the auxiliary positioning hole 11 above the positioning embedded plate 1 to adjust its height, thereby adjusting the elevation and flatness of the positioning embedded plate 1, and continuously adjusting until the installation accuracy requirements are met.

[0069] Step 3: Assemble the horizontal position adjustment mechanism and install it on the height adjustment mechanism, and the horizontal position adjustment mechanism passes through the auxiliary positioning hole 11 provided on the positioning embedded plate 1; the specific process is:

[0070] Step 301: Insert the round nut 332 into the long round hole 321 of the steel plate 32, and coaxially weld two hex nuts 331 at both ends of the round nut 332 to form a limiting nut 33. The steel plate 32 and the limiting nut 33 can rotate relative to each other around the axis, but the steel plate 32 cannot move freely in the direction parallel to the axis. The limiting nut 33 plays a role in limiting the steel plate 32.

[0071] Step 302: Install the steel plate 32 on the horizontal part of the L-shaped rod 31 by screwing the limiting nut 33, thus completing the assembly of the horizontal position adjustment mechanism.

[0072] Step 303: Lift the steel plate 32. At this time, the lower edge of the steel plate 32 is located above the positioning embedded plate 1. Fix the horizontal position adjustment mechanism to the upper end of the screw 21 by screwing the positioning nut 311, thus completing the fixation of the entire horizontal position adjustment mechanism.

[0073] Step 304: Divide the four horizontal position adjustment mechanisms into two groups, with two horizontal position adjustment mechanisms located on two opposite sides of the positioning embedded plate 1 as one group; Measure the horizontal position of the positioning embedded plate 1, initially judge the adjustment direction of the positioning embedded plate 1 in the horizontal plane, and rotate the positioning nut 311 to adjust the pointing direction of the horizontal parts of the two groups of horizontal position adjustment mechanisms. The axis direction of the horizontal part is consistent with its adjustment direction, so that the horizontal part of the L-shaped rod of one group of horizontal position adjustment mechanisms is perpendicular to the left and right sides of the positioning embedded plate 1, which is used to adjust the position of the positioning embedded plate 1 in the left and right directions; The horizontal part of the L-shaped rod of the other group of horizontal position adjustment mechanisms is perpendicular to the front and back sides of the positioning embedded plate 1, which is used to adjust the position of the positioning embedded plate 1 in the front and back directions.

[0074] Step 305: Adjust the position of the steel plate 32 so that the lower edge of the steel plate 32 extends into the auxiliary positioning hole 11 of the positioning embedded plate 1, and make the elevation of the lower edge of the steel plate 32 lower than the upper surface elevation of the positioning embedded plate 1, thus completing the installation of the horizontal position adjustment mechanism; When installing the horizontal position adjustment mechanism, the surface of the steel plate 32 should be fitted to the hole wall of the auxiliary positioning hole 11.

[0075] Step Four: Adjust the left and right positions and the front and back positions of the positioning embedded plate 1 in the horizontal plane through the horizontal position adjustment mechanism until the horizontal position meets the installation accuracy; The specific process is as follows:

[0076] Step 401: Rotate the limiting nut 33 to drive the steel plate 32 to move, and the steel plate 32 squeezes the hole wall of the auxiliary positioning hole 11 to adjust the left and right positions and the front and back positions of the positioning embedded plate 1 in the horizontal plane.

[0077] Step 402: Measure the horizontal position of the positioning embedded plate 1, and continuously adjust the limiting nut 33 until the horizontal position meets the installation accuracy.

[0078] In actual use, first select a group of horizontal position adjustment mechanisms and adjust their positions in the left-right direction or the front-back direction. During the adjustment process, use a measuring tool to measure the position of the positioning embedded plate 1, and continuously adjust and tighten the limit nut 33 according to the measurement results until the position of the positioning embedded plate 1 meets the accuracy requirements for the installation of the isolation bearing; after the position adjustment in one direction is completed, then based on another group of horizontal position adjustment mechanisms, adjust the position of the positioning embedded plate 1 in the other direction until the position meets the accuracy requirements; after the adjustments in both directions are completed, the left-right direction and the front-back direction positions of the positioning embedded plate 1 should be checked again.

[0079] Step Five, if it is confirmed through the check and acceptance that the elevation, flatness, and in-plane position of the positioning embedded plate 1 all meet the requirements for installing the isolation bearing, then the horizontal position adjustment mechanism can be removed. To avoid the movement of the bearing embedded plate during the subsequent concrete pouring process, the connection between the screw 21 and the special-shaped nut 22 can be welded for temporary fixation, and the intersection of the special-shaped nut 22 and the positioning embedded plate 1 can be temporarily fixed by spot welding.

[0080] Thus far, the positioning of the elevation, flatness, and the left-right and front-back directions in the horizontal plane of the positioning embedded plate 1 has been completed; insert the embedded anchor bars of the isolation bearing into the anchor bar installation holes 12, and pour the lower pier concrete through the pouring vent hole 13 so that the top elevation of the concrete is the same as the top elevation of the positioning embedded plate 1 and the surface of the concrete is flat; when the concrete has solidified and reached a certain strength, the installation of the isolation bearing can be carried out.

[0081] In summary, the above is only the preferred embodiment of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A flatness and position adjustment device for the installation of seismic isolation bearings, characterized in that It includes a positioning embedded plate, a height adjustment mechanism and a horizontal position adjustment mechanism; The positioning embedded plate is supported on the height adjustment mechanism, and the height adjustment mechanism adjusts the elevation and flatness of the positioning embedded plate in the vertical direction. The lower part of the height adjustment mechanism is fixed on the reinforcement cage of the lower pier of the isolation bearing; the horizontal position adjustment mechanism is installed on the height adjustment mechanism, and the horizontal position adjustment mechanism passes through the auxiliary positioning holes provided on the positioning embedded plate, and adjusts the left-right position and front-back position of the positioning embedded plate in the horizontal plane; There are four height adjustment mechanisms, four horizontal position adjustment mechanisms, and four auxiliary positioning holes. They are all located in the middle of the border of the positioning embedded plate, and the connecting lines of the opposite two auxiliary positioning holes are perpendicular to each other. The auxiliary positioning holes are square; the four horizontal position adjustment mechanisms are divided into two groups, and the opposite two horizontal position adjustment mechanisms are in one group, which are respectively used to adjust the position of the positioning embedded plate in the left-right direction or the front-back direction; The horizontal position adjustment mechanism includes an L-shaped rod, a steel plate and a limit nut; the vertical part of the L-shaped rod is threadedly connected to the height adjustment mechanism through a positioning nut, and the horizontal part of the L-shaped rod faces upward and is threadedly connected to the limit nut; the steel plate is sleeved on the limit nut, and the lower end of the steel plate extends into the auxiliary positioning hole; the two horizontal parts of each group of horizontal position adjustment mechanisms point in the same direction, and the axis direction of the horizontal part is the same as its adjustment direction.

2. The flatness and position adjustment device for isolation bearing installation according to claim 1, wherein The height adjustment mechanism includes a screw rod and a special-shaped nut. The special-shaped nut has a protruding arm structure on both sides of the nut; the length of the special-shaped nut is greater than the diagonal length of the auxiliary positioning hole.

3. The flatness and position adjustment device for the installation of the seismic isolation bearing according to claim 1, characterized in that, The steel plate is provided with an oblong hole for cooperating with the limit nut; The limit nut includes two hexagonal nuts and a circular nut. The two hexagonal nuts are fixed at both ends of the circular nut. The outer diameter of the hexagonal nut is greater than the outer diameter of the circular nut, and the hole diameters of the hexagonal nut and the circular nut are the same; the outer diameter of the circular nut is smaller than the width of the oblong hole, and the length of the circular nut is greater than the thickness of the steel plate.

4. The flatness and position adjustment device for isolation bearing installation according to any one of claims 1-3, characterized in that, The positioning embedded plate is also provided with a casting exhaust hole and an anchor bar installation hole. The casting exhaust hole is circular and is located at the center of the positioning embedded plate; the anchor bar installation holes are arranged at the four corners of the positioning embedded plate and are used to install the embedded anchor bars of the isolation bearing. Their positions and hole diameters are the same as the installation holes on the bottom plate of the isolation bearing.

5. A method for adjusting the flatness and position of a seismic isolation bearing during installation, characterized in that, Using the adjustment device according to any one of claims 1-4, the adjustment method includes the following steps: Step 1, assemble the height adjustment mechanism and fix the lower part of the height adjustment mechanism on the reinforcement cage of the lower pier of the isolation bearing; Step 2, place the positioning embedded plate on the height adjustment mechanism and adjust the elevation and flatness of the positioning embedded plate through the height adjustment mechanism; Step 3, assemble the horizontal position adjustment mechanism, install it on the height adjustment mechanism, and the horizontal position adjustment mechanism passes through the auxiliary positioning holes provided on the positioning embedded plate; Step 4, adjust the left-right position and front-back position of the positioning embedded plate in the horizontal plane through the horizontal position adjustment mechanism until the horizontal position meets the installation accuracy; Step 5, remove the horizontal position adjustment mechanism.

6. The flatness and position adjustment method for seismic isolation bearing installation according to claim 5, characterized in that, The specific content of Step 2 is: Step 201, place the positioning embedded plate on the special-shaped nut; Step 202: Measure the elevation and flatness of the positioning embedded plate; Step 203: According to the measurement results, rotate the special-shaped nut through the auxiliary positioning hole above the positioning embedded plate to adjust its height, thereby adjusting the elevation and flatness of the positioning embedded plate, and continuously adjust until the installation accuracy requirements are met.

7. The flatness and position adjustment method for isolation bearing installation according to claim 5, characterized in that, The assembly and installation process of Step 3 is specifically as follows: Step 301: Insert the circular nut into the long circular hole of the steel plate, and coaxially weld two hex nuts at both ends of the circular nut to form a limit nut; Step 302: Install the steel plate on the horizontal part of the L-shaped rod by rotating the limit nut, thereby assembling a horizontal position adjustment mechanism; Step 303: Lift the steel plate. At this time, the lower edge of the steel plate is located above the positioning embedded plate, and fix the horizontal position adjustment mechanism to the upper end of the screw by screwing the positioning nut; Step 304: Measure the horizontal position of the positioning embedded plate, initially judge the adjustment direction of the positioning embedded plate in the horizontal plane, and rotate the positioning nut to adjust the pointing direction of the horizontal parts of the two groups of horizontal position adjustment mechanisms, and the axis direction of the horizontal part is consistent with its adjustment direction; Step 305: Adjust the position of the steel plate so that the lower edge of the steel plate extends into the auxiliary positioning hole of the positioning embedded plate.

8. The flatness and position adjustment method for isolation bearing installation according to claim 7, characterized in that The adjustment method of Step 4 is specifically as follows: Step 401: Rotate the limit nut to drive the steel plate to move, and the steel plate squeezes the hole wall of the auxiliary positioning hole to adjust the left-right position and front-back position of the positioning embedded plate in the horizontal plane; Step 402: Measure the horizontal position of the positioning embedded plate, and continuously adjust the limit nut until the horizontal position meets the installation accuracy.

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