Fabricated building anti-seismic structure

Abstract

The utility model provides a fabricated building anti-seismic structure, and belongs to the technical field of fabricated building construction. The fabricated building anti-seismic structure comprises a viscous damper, an upper gusset plate and a lower gusset plate, the upper gusset plate and the lower gusset plate are detachably installed at the two ends of the viscous damper respectively, the upper gusset plate comprises a first plate body and a second plate body which can be separated, and pin holes are formed in the first plate body and the second plate body; a first limiting block and a second limiting block are fixedly arranged in the two pin holes respectively, a pin shaft is connected between the two pin holes in an inserted mode, the pin shaft is arranged in a mounting hole in the end of the viscous damper, and a first arc-shaped limiting groove and a second arc-shaped limiting groove are formed in the positions, corresponding to the first limiting block and the second limiting block, of the surfaces of the pin holes respectively. According to the viscous damper, the existing viscous damper is improved, so that the field installation operation of the viscous damper is more convenient, and the construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fabricated building construction, and particularly relates to a fabricated building anti-seismic structure. BACKGROUND

[0002] In the installation and construction process of the fabricated building, in order to improve the anti-seismic performance of the building, an anti-seismic structure needs to be arranged in the wall body, and the viscous damper is the most commonly used anti-seismic structure of the fabricated building and is widely used, which is fixed on site during the installation and construction process of the wall body to connect the upper and lower wall body parts.

[0003] The viscous damper comprises an upper node plate (a plate connected to the upper wall body), a lower node plate (a plate connected to the lower wall body) and a viscous damper body, in the installation process, the lower node plate is first fixed by spot welding, then one end of the viscous damper body is connected to the lower node plate by using a pin shaft, the other end of the viscous damper is supported by using a jack, the viscous damper is adjusted to be in a horizontal state, the viscous damper is firmly connected to the upper node plate by using a pin shaft, and finally the upper node plate is fixed by electric welding, then the upper node plate and the lower node plate are fixed by supplementary welding, and the jack is removed. Because the jack is needed to support the viscous damper in the middle, the installation process of the viscous damper is inconvenient, and automatic alignment installation cannot be achieved. SUMMARY

[0004] To solve the above technical problems, the utility model provides a fabricated building anti-seismic structure which is convenient to install, has high stability and high installation precision.

[0005] The technical scheme of the utility model is as follows:

[0006] A fabricated building anti-seismic structure, comprising a viscous damper and an upper node plate and a lower node plate which are respectively detachably installed at two ends of the viscous damper, the upper node plate comprises a first plate body and a second plate body which are separable, pin holes are formed in the first plate body and the second plate body, a first limiting block and a second limiting block are fixedly arranged in the two pin holes respectively, a pin shaft is inserted between the two pin holes, the pin shaft is arranged in a mounting hole at the end of the viscous damper, and the surface of the pin hole is provided with a first limiting groove and a second limiting groove which are in an arc shape and correspond to the first limiting block and the second limiting block respectively. The first limiting groove and the second limiting groove lock the first plate body and the second plate body on the pin shaft in the axial direction by cooperating with the first limiting block and the second limiting block respectively.

[0007] Further, the two ends of the pin shaft are located in the two pin holes respectively, a fastening hole is formed in the center of the pin shaft, a fastening bolt is arranged in the fastening hole, and the head of the fastening bolt extends out of the fastening hole and is connected to a fastening nut.

[0008] Further, the surface of the pin shaft is provided with an annular groove, the inside of the annular groove is fixedly provided with a first sleeve and a second sleeve respectively, the first limiting groove and the second limiting groove are respectively arranged in the first sleeve and the second sleeve, and the first limiting groove and the second limiting groove are in a state of penetrating the sleeve inward.

[0009] Further, the first plate body and the second plate body each comprise an upper part and a lower part arranged in an up-down manner, the pin hole is arranged at the top end of the upper part, the lower part is vertically fixed at the bottom of the upper part, and the length of the lower part in the axial direction of the pin shaft is greater than the length of the upper part.

[0010] Further, the first limiting groove and the second limiting groove are oppositely arranged on the two sides of the pin shaft in the circumferential direction, and the first limiting groove and the second limiting groove are respectively provided with a first slot and a second slot at one end in the circumferential direction, the first slot and the second slot are in an opposite state in the circumferential direction, the first limiting block can enter or exit the first limiting groove through the first slot, and the second limiting block can enter or exit the second limiting groove through the second slot.

[0011] Further, the first sleeve is provided with a first through groove on the side of the first limiting groove away from the first slot, the second sleeve is provided with a second through groove on the side of the second limiting groove away from the second slot, the first through groove and the second through groove are both in an "L" shape, the axial slots of the first through groove and the second through groove are communicated through the annular groove, the first sleeve and the second sleeve are respectively provided with a first notch and a second notch, the first notch communicates the circumferential slot of the first through groove with the annular groove, and the second notch communicates the circumferential slot of the second through groove with the annular groove.

[0012] Further, the annular groove is provided with an inlet corresponding to the end of the side of the first sleeve for the first limiting block and the second limiting block to enter the annular groove in the axial direction, and the end of the side of the second sleeve is in a closed state.

[0013] Further, the inner wall surface of the mounting hole is fixedly provided with a third limiting block, the axial length and the circumferential length of the first limiting block, the second limiting block and the third limiting block are all the same, and the circumferential length of the first limiting groove, the second limiting groove, the first through groove and the second through groove is equal to twice the circumferential length of the first limiting block or the second limiting block or the third limiting block.

[0014] When the side of the first limiting block is flush with the first slot, the second limiting block is located in the second through groove, and the side of the second limiting block is flush with the circumferential slot of the second through groove; when the side of the second limiting block is flush with the second slot, the first limiting block is located in the first through groove, and the side of the first limiting block is flush with the circumferential slot of the first through groove.

[0015] Further, the opposite sides of the first plate body and the second plate body are fixedly provided with inserting rings for being inserted into the mounting holes, opposite ends of the two inserting rings are provided with circumferentially distributed tooth grooves capable of being engaged, and both sides of the two inserting ring ends are provided with sleeve grooves for sleeving the third limiting blocks.

[0016] The utility model has the advantages of the following beneficial effects:

[0017] By setting the lower node plate into a form combined by the separable first plate body and the second plate body, the installation connection can be carried out respectively, the first plate body can support the whole viscous damper when the first plate body is installed and fixed, the second plate body can support the whole viscous damper when the second plate body is installed and fixed, the first plate body can be suspended and fixed to the whole viscous damper, so that other external auxiliary equipment is not needed for supporting in the process of installing the viscous damper, the installation operation is greatly simplified, and the installation precision is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the overall schematic view of the utility model;

[0019] Figure 2 is the schematic view of the mounting hole of the utility model;

[0020] Figure 3 is the schematic view of the first plate body and the second plate body of the utility model;

[0021] Figure 4 is the schematic view of the first plate body of the utility model Figure 3 ; is the enlarged view of A in the utility model ;

[0022] Figure 5 is the schematic view of the first plate body of the utility model ;

[0023] Figure 6 is the enlarged view of B in the utility model Figure 5 ;

[0024] Figure 7 is the schematic view of the second plate body of the utility model;

[0025] Figure 8 is the enlarged view of B in the utility model Figure 7 ;

[0026] Figure 9 is the schematic view of the pin shaft of the utility model;

[0027] Figure 10 is the rear view of the utility model Figure 8 ;

[0028] Figure 11 is the schematic view of the fastening hole of the utility model.

[0029] In the figure: 1. Upper node plate; 2. First plate body; 3. Second plate body; 4. Pin hole; 5. First limit block; 6. Second limit block; 7. Pin shaft; 8. Mounting hole; 9. First limit groove; 10. Second limit groove; 11. Fastening hole; 12. Fastening bolt; 13. Fastening nut; 14. Annular groove; 15. First sleeve ring; 16. Second sleeve ring; 17. First notch; 18. Second notch; 19. First through groove; 20. Second through groove; 21. First gap; 22. Second gap; 23. Entrance; 24. Third limit block; 25. Insert ring; 26. Tooth groove; 27. Sleeve groove. DETAILED DESCRIPTION

[0030] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] like Figures 1 to 11 As shown, an assembled building seismic structure includes a viscous damper and an upper node plate 1 and a lower node plate detachably mounted at both ends of the viscous damper. The upper node plate 1 includes a separable first plate body 2 and a second plate body 3. Pin holes 4 are provided on the first plate body 2 and the second plate body 3. A first limit block 5 and a second limit block 6 are fixedly arranged in the two pin holes 4, respectively. A pin shaft 7 is inserted between the two pin holes 4. The pin shaft 7 is arranged in a mounting hole 8 at the end of the viscous damper. The surface of the pin hole 4 is respectively provided with an arc-shaped first limit groove 9 and a second limit groove 10 corresponding to the first limit block 5 and the second limit block 6. The first limit groove 9 and the second limit groove 10 respectively cooperate with the first limit block 5 and the second limit block 6 to axially lock the first plate body 2 and the second plate body 3 on the pin shaft 7.

[0032] In the installation of the anti-seismic structure, the lower node plate is first fixed on the lower wall, and then the upper node plate 1 supports the other end of the viscous damper in a horizontal state. At this time, the pin shaft 7 is axially limited to the end of the viscous damper by the cooperation of the first limiting groove 9, the second limiting groove 10, the first limiting block 5 and the second limiting block 6. Then, the first plate body 2 is rotated to an upward state, and the first plate body 2 is welded with the steel plate pre-buried in the upper wall. In this process, the viscous damper is stably supported on the lower wall by the second plate body 3. Then, the second plate body 3 is rotated to an upward state, and the second plate body 3 is welded with the steel plate pre-buried in the upper wall. At this time, the viscous damper is stably hung on the upper wall by the first plate body 2. Then, the first plate body 2 and the second plate body 3 are also welded, thereby realizing the installation and fixation of the anti-seismic structure. Compared with the prior art, the viscous damper does not need to be supported by other tools such as a jack, thereby reducing the difficulty of construction operation and improving the efficiency of construction operation. No one needs to work together, thereby reducing labor costs and ensuring construction quality.

[0033] The two ends of the pin shaft 7 are located in the two pin holes 4, respectively. The center of the pin shaft 7 is provided with a fastening hole 11. The fastening bolt 12 is arranged in the fastening hole 11, and the head of the fastening bolt 12 extends out of the fastening hole 11 and is connected with the fastening nut 13. After the upper node plate 1 is installed and fixed, the fastening bolt 12 is connected with the fastening nut 13 after passing through the fastening hole 11. At this time, the fastening nut 13 cooperates with the fastening bolt 12 to stably clamp the first plate body 2 and the second plate body 3 at the end of the viscous damper, thereby improving the overall stability.

[0034] The surface of the pin shaft 7 is provided with an annular groove 14. The first sleeve ring 15 and the second sleeve ring 16 are fixedly sleeved on the inside of the annular groove 14, respectively. The first limiting groove 9 and the second limiting groove 10 are arranged in the first sleeve ring 15 and the second sleeve ring 16, respectively, and the first limiting groove 9 and the second limiting groove 10 are in a state of penetrating the sleeve ring inward. Specifically, the inner side wall surfaces of the annular groove 14, the second limiting groove 10 and the second limiting groove 10 are on the same circumferential surface.

[0035] The first plate body 2 and the second plate body 3 each include an upper part and a lower part arranged in a vertical direction. The pin hole 4 is arranged at the top end of the upper part. The lower part is vertically fixed at the bottom of the upper part, and the length of the lower part in the axial direction of the pin shaft 7 is greater than the length of the upper part. In this way, when one of the first plate body 2 and the second plate body 3 supports the viscous damper, the lower part has sufficient contact with the lower wall, thereby improving the stability of supporting the viscous damper, preventing shaking or deviation, and further improving the accuracy of installation and fixation.

[0036] Further, the first limiting groove 9 and the second limiting groove 10 are oppositely arranged on two sides of the pin shaft 7 in the circumferential direction, and the first limiting groove 9 and the second limiting groove 10 are respectively provided with a first slot 17 and a second slot 18 at one end in the circumferential direction, and the first slot 17 and the second slot 18 are in an opposite state in the circumferential direction. The first limiting block 5 can enter or exit the first limiting groove 9 through the first slot 17, and the second limiting block 6 can enter or exit the second limiting groove 10 through the second slot 18.

[0037] Specifically, after the first limiting block 5 exits the first limiting groove 9, the first plate body 2 can be axially displaced, and similarly, after the second limiting block 6 exits the second limiting groove 10, the second plate body 3 can be axially displaced. Further, before rotating the first plate body 2 or the second plate body 3 upward, the first plate body 2 and the second plate body 3 can be displaced outward along the axial direction, so that the lower part of the first plate body 2 and the second plate body 3 is out of the range of the wall body, facilitating the rotation of the first plate body 2 and the second plate body 3.

[0038] In addition, after the first limiting block 5 exits the first limiting groove 9, the second limiting block 6 is limited by the second limiting groove 10, so that the second plate body 3 is stably limited in the axial direction. Similarly, after the second limiting block 6 exits the second limiting groove 10, the first limiting block 5 is limited by the first limiting groove 9, so that the first plate body 2 is stably limited in the axial direction, and further, when one of the first plate body 2 and the second plate body 3 supports the viscous damper, it still has sufficient stability.

[0039] The first sleeve 15 is provided with a first through groove 19 on the side away from the first slot 17 corresponding to the first limiting groove 9, and the second sleeve 16 is provided with a second through groove 20 on the side away from the second slot 18 corresponding to the second limiting groove 10. The first through groove 19 and the second through groove 20 are both "L" shaped, the axial slots of the first through groove 19 and the second through groove 20 are communicated through the annular groove 14, and the first sleeve 15 and the second sleeve 16 are respectively provided with a first notch 21 and a second notch 22. The first notch 21 communicates the circumferential slot of the first through groove 19 with the annular groove 14, and the second notch 22 communicates the circumferential slot of the second through groove 20 with the annular groove 14. The first limiting block 5 and the second limiting block 6 move from one end of the pin shaft 7 to the other end through the first through groove 19 and the second through groove 20, so as to facilitate the installation of the first plate body 2 and the second plate body 3 on the two ends of the pin shaft 7, and more convenient for the assembly and installation of the upper node plate 1.

[0040] The annular groove 14 is provided with an entrance 23 corresponding to the end of the first collar 15 for the first limiting block 5 and the second limiting block 6 to enter the annular groove 14 in the axial direction, and the annular groove 14 is closed corresponding to the end of the second collar 16. The inner wall surface of the mounting hole 8 is fixedly provided with a third limiting block 24, the axial length and the circumferential length of the first limiting block 5, the second limiting block 6 and the third limiting block 24 are the same, and the circumferential length of the first limiting groove 9, the second limiting groove 10, the first through groove 19 and the second through groove 20 is equal to twice the circumferential length of the first limiting block 5 or the second limiting block 6 or the third limiting block 24, wherein:

[0041] When the first limiting block 5 is located in the first limiting groove 9 and one side of the first limiting block 5 is flush with the first slot 17, the second limiting block 6 is located in the second through groove 20, and one side of the second limiting block 6 is flush with the circumferential slot of the second through groove 20; when the second limiting block 6 is located in the second limiting groove 10 and one side of the second limiting block 6 is flush with the second slot 18, the first limiting block 5 is located in the first through groove 19, and one side of the first limiting block 5 is flush with the circumferential slot of the first through groove 19

[0042] During the construction process, first, the first plate body 2 and the second plate body 3 are respectively placed on both sides of the viscous damper, the pin hole 4 is aligned with the mounting hole 8, then the entrance 23 is aligned with the second limiting block 6, and the pin shaft 7 is inserted from the pin hole 4 on the second plate body 3, in the process of insertion, the third limiting block 24 also enters the annular groove 14 through the entrance 23. When it cannot continue to be inserted, the second limiting block 6 contacts the side surface of the first collar 15, at this time, the pin shaft 7 is rotated, so that the second limiting block 6 moves to the circumferential slot of the first through groove 19, then the pin shaft 7 is rotated again, so that the second limiting block 6 moves to the axial end of the first through groove 19, then the pin shaft 7 is continuously inserted, when the second limiting block 6 moves out of the axial outlet of the first through groove 19, the end of the pin shaft 7 contacts the first limiting block 5, at this time, the pin shaft 7 is rotated, so that the first limiting block 5 is aligned with the entrance 23, then the pin shaft 7 is continuously inserted, when the first limiting block 5 enters the annular groove 14, the third limiting block 24 contacts the side surface of the first collar 15, at this time, the pin shaft 7 is rotated again, so that the third limiting block 24 moves to the circumferential slot of the first through groove 19, then the third limiting block 24 is moved to the area between the two first collars 15 by rotating and inserting, and the first limiting block 5 and the second limiting block 6 are respectively moved to the state of circumferential coincidence in the first limiting groove 9 and the second limiting groove 10. Then, the pin shaft 7 is rotated, so that the first limiting block 5 is located in the circumferential section of the first through groove 19, and the second limiting block 6 is located in the second limiting groove 10, at this time, the first plate body 2 and the second plate body 3 are locked in the axial direction on the viscous damper.

[0043] Before rotating the second plate body 3 upward, first rotate the pin shaft 7 in the positive direction, so that the second limiting block 6 moves away from the second limiting groove 10. At this time, the first limiting block 5 moves to the circumferential deepest part of the first passing groove 19, and the pin shaft 7 limits the first plate body 2 in the axial direction, so that the first plate body 2 and the viscous damper maintain a stable state. Then, directly pull the second plate body 3 outward to a range away from the wall body, rotate the second plate body 3 upward to a vertical state, and then push the second plate body 3 inward, so that the second limiting block 6 moves to the circumferential groove of the second passing groove 20. Then, reverse rotate the pin shaft 7, so that the circumferential groove of the second passing groove 20 is sleeved with the second limiting block 6. During this process, the first limiting block 5 is restored to the initial position from the circumferential deepest part of the first passing groove 19. At this time, the first limiting block 5 and the second limiting block 6 are respectively limited in the axial direction by the first passing groove 19 and the second passing groove 20. Then, weld the second plate body 3 to the steel plate pre-buried in the upper wall body. After the welding work of the second plate body 3 is completed, rotate the first plate body 2 to an upward state.

[0044] Before rotating the first plate body 2 upward again, directly reverse rotate the pin shaft 7, so that the first limiting block 5 moves away from the circumferential groove of the first passing groove 19. During this process, the second limiting block 6 moves to the circumferential deepest part of the second passing groove 20. Then, directly pull the first plate body 2 outward to a range away from the wall body, and then rotate it upward to an upward state. Then, push the first plate body 2 inward to the initial position. At this time, the first limiting block 5 moves to the groove of the first limiting groove 9. Then, rotate the pin shaft 7 in the positive direction, so that the first limiting block 5 moves to the first limiting groove 9. The second limiting block 6 is restored to the side close to the groove of the second passing groove 20 from the circumferential deepest part of the second passing groove 20. At this time, the first limiting block 5 and the second limiting block 6 are respectively limited in the axial direction by the first limiting groove 9 and the second passing groove 20. Then, weld the first plate body 2 to the steel plate pre-buried in the upper wall body. After the welding is completed, install the locking bolt and the locking nut.

[0045] The opposite sides of the first plate body 2 and the second plate body 3 are fixedly provided with inserting rings 25 for being inserted into the mounting holes 8, the opposite ends of the two inserting rings 25 are provided with tooth grooves 26 capable of being engaged and distributed in the circumferential direction, and the two sides of the end portions of the two inserting rings 25 are provided with sleeve grooves (27) for sleeving the third limiting blocks 24. When the first plate body 2 and the second plate body 3 are in the mounted state, the tooth grooves 26 of the opposite ends of the two inserting rings 25 are in the engaged state, when the second plate body 3 is rotated to the upward state and the first plate body 2 supports the viscous damper on the lower wall, before the second plate body 3 is welded, the first plate body 2 is limited by the inserting rings 25 and the tooth grooves 26 of the second plate body 3 in the upward state, and similarly, before the first plate body 2 is rotated to the upward state and welded, the second plate body 3 is limited by the inserting rings 25 and the tooth grooves 26 of the first plate body 2 in the upward state. In addition, the third limiting blocks 24 are sleeved in the sleeve grooves (27), so that the viscous damper is limited by the third limiting blocks 24 for the first plate body and the second plate body 3 in the upward state and the downward state.

[0046] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A prefabricated building anti-seismic structure comprising a viscous damper and an upper node plate (1) and a lower node plate respectively detachably mounted at two ends of the viscous damper, characterized in that, The upper node plate (1) comprises a separable first plate body (2) and a second plate body (3), pin holes (4) are formed on the first plate body (2) and the second plate body (3), a first limiting block (5) and a second limiting block (6) are fixedly arranged in the two pin holes (4) respectively, a pin shaft (7) is inserted between the two pin holes (4), the pin shaft (7) is arranged in a mounting hole (8) at the end of a viscous damper, arc-shaped first limiting grooves (9) and second limiting grooves (10) are arranged on the surface of the pin hole (4) corresponding to the first limiting block (5) and the second limiting block (6) respectively, the first limiting grooves (9) and the second limiting grooves (10) are axially locked on the pin shaft (7) by cooperating with the first limiting block (5) and the second limiting block (6) respectively.

2. The assembled building anti-seismic structure according to claim 1, characterized in that, Both ends of the pin shaft (7) are located in the two pin holes (4), a fastening hole (11) is formed in the center of the pin shaft (7), a fastening bolt (12) is arranged in the fastening hole (11), and the head of the fastening bolt (12) extends out of the fastening hole (11) and is connected with a fastening nut (13).

3. The assembled building anti-seismic structure according to claim 1, characterized in that, An annular groove (14) is arranged on the surface of the pin shaft (7), a first sleeve ring (15) and a second sleeve ring (16) are fixedly sleeved on the inner sides of the annular groove (14) respectively, the first limiting grooves (9) and the second limiting grooves (10) are formed in the first sleeve ring (15) and the second sleeve ring (16) respectively, and the first limiting grooves (9) and the second limiting grooves (10) are in a state of penetrating the sleeve rings inwardly.

4. The prefabricated building anti-seismic structure according to claim 3, characterized in that, The first plate body (2) and the second plate body (3) each comprise an upper part and a lower part arranged in a vertical manner, the pin hole (4) is formed at the top end of the upper part, the lower part is fixedly arranged at the bottom of the upper part vertically, and the length of the lower part in the axial direction of the pin shaft (7) is greater than the length of the upper part.

5. The prefabricated building anti-seismic structure according to claim 4, characterized in that, The first limiting grooves (9) and the second limiting grooves (10) are arranged on the two sides of the pin shaft (7) in a circumferential direction, first slot openings (17) and second slot openings (18) are formed at one end of the first limiting grooves (9) and the second limiting grooves (10) in the circumferential direction respectively, the first slot openings (17) and the second slot openings (18) are in an opposite state in the circumferential direction, the first limiting block (5) can enter or exit the first limiting grooves (9) through the first slot openings (17), and the second limiting block (6) can enter or exit the second limiting grooves (10) through the second slot openings (18).

6. The prefabricated building anti-seismic structure according to claim 3, characterized in that, The first collar (15) is provided with a first through slot (19) on the side corresponding to the first limiting slot (9) away from the first slot (17), and the second collar (16) is provided with a second through slot (20) on the side corresponding to the second limiting slot (10) away from the second slot (18), the first through slot (19) and the second through slot (20) are both "L" shaped, the axial slots of the first through slot (19) and the second through slot (20) are communicated through the annular slot (14), the first collar (15) and the second collar (16) are respectively provided with a first notch (21) and a second notch (22), the first notch (21) communicates the circumferential slot of the first through slot (19) with the annular slot (14), and the second notch (22) communicates the circumferential slot of the second through slot (20) with the annular slot (14).

7. The prefabricated building anti-seismic structure according to claim 6, characterized in that, The annular slot (14) is provided with an entrance (23) on the end corresponding to the side of the first collar (15) for the first limiting block (5) and the second limiting block (6) to enter the annular slot (14) in the axial direction, and the end of the annular slot (14) corresponding to the side of the second collar (16) is in a closed state.

8. The prefabricated building anti-seismic structure according to claim 7, characterized in that, The inner wall surface of the mounting hole (8) is fixedly provided with a third limiting block (24), the axial length and the circumferential length of the first limiting block (5), the second limiting block (6) and the third limiting block (24) are the same, and the circumferential lengths of the first limiting slot (9), the second limiting slot (10), the first through slot (19) and the second through slot (20) are all equal to twice the circumferential length of the first limiting block (5) or the second limiting block (6) or the third limiting block (24), wherein: The first limiting block (5) is located in the first limiting slot (9), and when one side of the first limiting block (5) is flush with the first slot (17), the second limiting block (6) is located in the second through slot (20), and one side of the second limiting block (6) is flush with the circumferential slot of the second through slot (20); the second limiting block (6) is located in the second limiting slot (10), and when one side of the second limiting block (6) is flush with the second slot (18), the first limiting block (5) is located in the first through slot (19), and one side of the first limiting block (5) is flush with the circumferential slot of the first through slot (19).

9. The prefabricated building anti-seismic structure according to claim 8, characterized in that, The opposite sides of the first plate body (2) and the second plate body (3) are both fixedly provided with an insertion ring (25) for insertion into the mounting hole (8), the opposite ends of the two insertion rings (25) are provided with circumferentially distributed tooth grooves (26) capable of engaging, and the two sides of the ends of the two insertion rings (25) are both provided with a sleeve groove (27) for sleeving the third limiting block (24).

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