Anti-seismic optimization design method of fabricated building node connecting structure

Abstract

The invention discloses an anti-seismic optimization design method of an assembly type building node connecting structure, and relates to the technical field of building structures, the anti-seismic optimization design method of the assembly type building node connecting structure comprises a mounting frame and an assembly mechanism, the assembling mechanism is arranged on the outer side of the mounting frame and comprises a mounting rotating rod, mounting bolts, an integrated bolt cap, a second conical fluted disc, a rack and a threaded barrel, the mounting bolts are synchronously driven to rotate when the mounting rotating rod is rotated, so that the multiple groups of mounting bolts are synchronously engaged with the integrated bolt cap, then the mounting rotating rod is rotated, and the integrated bolt cap is assembled. According to the whole set of installation method, through cooperative transmission of multiple assemblies, a single power source is converted into multiple assembly functions, operation is conducted on multiple connection points at the same time, the construction efficiency is improved, the construction period is shortened, and the construction cost is reduced. And meanwhile, the project cost is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of building structures, and particularly to a seismic optimization design method for the connection structure of prefabricated building joints. Background Art

[0002] The connection structure of prefabricated building joints is a structural system that connects prefabricated components (such as beams, columns, wall panels, floor slabs, etc.) into a whole in prefabricated buildings. Its core is to ensure the effective transfer of forces between components and the integrity of the structure. Common connection methods include reinforced sleeve grouting connection, bolt connection, welding connection, etc., and need to meet the requirements of safety, durability and construction convenience.

[0003] In the production and use of some connection structures of prefabricated building joints, due to the nature of work and geographical location, the seismic effect needs to be considered. Therefore, a seismic optimization design method for the connection structure of prefabricated building joints is required.

[0004] However, the existing seismic optimization design methods for the connection structure of prefabricated building joints have the following deficiencies: At present, in order to enhance the seismic effect, multiple connecting rods are added to the connection structure of prefabricated building joints on the market and fixed by bolts to form the initial construction framework. However, due to a large number of connection structures and bolt connections, when using electric equipment to install the bolts, the working speed is still slow, which affects the construction period and increases the project cost.

[0005] Therefore, we propose a seismic optimization design method for the connection structure of prefabricated building joints to solve the problems raised above. Summary of the Invention

[0006] The object of the present invention is to provide a seismic optimization design method for the joint connection structure of prefabricated buildings. First, place the main pipe rack on the installation rack. The sleeving holes opened on the main pipe rack correspond to the installation bolts on the main pipe rack. After being stably placed, slide the integrated nut on the main pipe rack so that the installation bolt and the installation nut limit each other. The telescopic spring on the installation nut is compressed. At this time, the installation nut and the integrated nut can continue to be pushed. Continue to push the integrated nut until the inner side of the integrated nut contacts the bottom surface of the main pipe rack. Then rotate the installation rod so that the installation rod drives the straight gear disk to rotate. The tooth blocks arranged inside the tooth ring drive multiple installation bolts to rotate synchronously. Therefore, when the installation bolts rotate, they are automatically threadedly connected to the installation nuts until the main pipe rack is in close contact with and limited by the installation rack. Arrange according to the concave and convex structures on the main pipe rack. Through the concave and convex engagement structures with each other, the overall stability can be increased. A threaded cylinder is arranged on the outer side of the main pipe rack. After the sliding square pipe is sleeved, use the two-way bolts to dock with the two threaded cylinders to be connected respectively and turn the two-way bolts. Adjust the distance between the two-way bolts and the threaded cylinders as required. Then use the installation rod again to drive the first bevel gear disk to rotate. While the first bevel gear disk rotates, the second bevel gear disk engaged with it is driven to rotate on the outside of the rotating disk. While the second bevel gear disk rotates, it drives the straight gear to rotate. At this time, the rotating straight gear drives the rack to move because it meshes with the rack. Finally, the rack drives the sliding square pipe to move.

[0007] To achieve the above object, the present invention provides the following technical solutions: A seismic optimization design method for the joint connection structure of prefabricated buildings, including an installation rack and an assembly mechanism. The assembly mechanism is arranged on the outside of the installation rack; The assembly mechanism includes an installation rod, installation bolts, an integrated nut, a second bevel gear disk, a rack and a threaded cylinder. By rotating the installation rod, the installation bolts are synchronously driven to rotate, so that multiple groups of installation bolts are synchronously engaged with the integrated nut to achieve rapid connection. At the same time, the rotation of the installation bolts drives the second bevel gear disk to rotate synchronously. While the second bevel gear disk rotates, it drives the rack to translate. The rack is fixed to the threaded cylinder through a connection structure. Therefore, when the rack moves, it pulls the threaded cylinder to tighten it.

[0008] Preferably, the assembly mechanism further includes an installation hole. The installation hole is opened on the outside of the installation rack. The inside of the installation hole is rotatably connected to the installation bolts. The integrated nut is arranged on the outside of the installation bolts. The inside of the integrated nut is slidably connected to an installation nut. The installation nut is threadedly connected to the installation bolts.

[0009] Preferably, a plurality of tooth blocks are equidistantly and fixedly connected to the outside of the plurality of installation bolts. The plurality of installation bolts are grouped in fours. A tooth ring is arranged on the outside of each group of installation bolts. The tooth ring meshes with the tooth blocks fixedly connected to the installation bolts.

[0010] Preferably, a plurality of sliding grooves are provided inside the integrated bolt cap. The cross-section of the sliding groove is slightly larger than the outer cross-section of the mounting nut. One end of the mounting nut is provided with a telescopic spring, and the other end of the telescopic spring is arranged inside the sliding groove.

[0011] Preferably, a spur gear disk is rotatably connected inside the mounting frame. The spur gear disk meshes inside a plurality of the toothed rings. A main frame tube is arranged outside the mounting frame. A plurality of sleeve holes are provided outside the main frame tube. The main frame tube is sleeved outside a plurality of the mounting bolts through the plurality of sleeve holes. The integrated bolt cap is slidably connected outside the main frame tube.

[0012] Preferably, a mounting rotating rod is arranged inside the main frame tube. The mounting rotating rod meshes with the spur gear disk. A rotating disk is arranged inside the main frame tube. A second bevel gear disk is rotatably connected to the outside of the rotating disk. A connecting frame is arranged outside the spur gear disk. The other end of the connecting frame is provided with a first bevel gear disk.

[0013] Preferably, the first bevel gear disk meshes with the second bevel gear disk. A limiting groove is rotatably connected to the outside of the connecting frame. A rotating ring is arranged outside the connecting frame. The connecting frame is rotatably connected to the limiting groove through the rotating ring. Teeth identical to those inside the spur gear disk are arranged inside the first bevel gear disk. The first bevel gear disk meshes with the mounting rotating rod through the teeth.

[0014] Preferably, a spur gear is arranged at the top of the second bevel gear disk. A rack is arranged inside the main frame tube. The other end of the rack penetrates through the main frame tube and is provided with a sliding square tube.

[0015] Preferably, a fixing blade is arranged outside the sliding square tube. A threaded cylinder is rotatably connected to the outside of the fixing blade. A bidirectional bolt is arranged inside the threaded cylinder. The threaded cylinder meshes with the bidirectional bolt. The other end of the bidirectional bolt is threadedly connected to another threaded cylinder. Another fixing blade is rotatably connected to the inside of the other threaded cylinder.

[0016] Preferably, a docking rotating piece is arranged inside the main frame tube. A rotating sliding hole slightly larger than the cross-section of the mounting rotating rod is provided inside the docking rotating piece. The rotating sliding hole is rotatably connected to the mounting rotating rod. The spur gear meshes with the rack. The edges of the mounting surfaces where the main frame tube is connected to the mounting frame are concave and convex surfaces that can be mutually engaged.

[0017] Compared with the prior art, the beneficial effects of the present invention are: The cam is then rotated to move the gear rack and the cam is engaged with the gear ring, thereby driving the cam to move the gear rack and the gear box so that the cam can be tightened and the cam can be tightened. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a main structural stereogram in the seismic optimization design method of the assembled building node connection structure of the present invention; Figure 2 It is a structural split stereogram in the seismic optimization design method of the assembled building node connection structure of the present invention; Figure 3 It is a disassembled stereoscopic diagram of the assembly mechanism in the seismic optimization design method of the assembled building node connection structure of the present invention; Figure 4 It is a disassembled stereoscopic diagram of the assembly mechanism part structure in the seismic optimization design method of the assembled building node connection structure of the present invention; Figure 5 for Figure 4 A in the enlarged view; Figure 6 It is a fully assembled stereogram of the seismic optimization design method of the prefabricated building node connection structure of the present invention.

[0019] In the figure: 1, mounting frame; 2, assembly mechanism; 201, mounting hole; 202, mounting bolt; 203, main frame tube; 204, mounting nut; 205, telescopic spring; 206, integrated bolt cap; 207, gear ring; 208, spur gear disc; 209, mounting rotating rod; 210, sliding square tube; 211, fixed leaf; 212, threaded cylinder; 213, two-way bolt; 214, first bevel gear disc; 215, second bevel gear disc; 216, rotating disc; 217, spur gear; 218, rack; 219, connecting frame; 220, limit groove; 221, docking rotating piece. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment 1. According to Figures 1-3 As shown, an anti-seismic optimization design method for a connection structure of prefabricated building nodes includes an installation frame 1 and an assembly mechanism 2. The assembly mechanism 2 is arranged on the outer side of the installation frame 1. The assembly mechanism 2 includes an installation rotating rod 209, installation bolts 202, integrated nuts 206, second bevel gear disks 215, racks 218, and threaded cylinders 212. When the installation rotating rod 209 is rotated, the installation bolts 202 are synchronously driven to rotate, so that multiple groups of installation bolts 202 are synchronously meshed with the integrated nuts 206 to achieve quick connection. At the same time, the rotation of the installation bolts 202 drives the second bevel gear disks 215 to rotate synchronously. While the second bevel gear disks 215 are rotating, the racks 218 are driven to translate. The racks 218 are fixed to the threaded cylinders 212 through a connection structure. Therefore, when the racks 218 move, the threaded cylinders 212 are pulled and tightened. The assembly mechanism 2 further includes installation holes 201. The installation holes 201 are opened on the outer side of the installation frame 1. The inner side of the installation holes 201 is rotatably connected to the installation bolts 202. The integrated nuts 206 are arranged on the outer side of the installation bolts 202. An installation nut 204 is slidably connected to the inner side of the integrated nut 206. The installation nut 204 is threadedly connected to the installation bolts 202. A plurality of tooth blocks are equally spaced and fixedly connected to the outer sides of the plurality of installation bolts 202. The plurality of installation bolts 202 are grouped in fours. A tooth ring 207 is arranged on the outer side of each group of installation bolts 202. The tooth ring 207 is meshed with the tooth blocks fixedly connected to the installation bolts 202. A plurality of chutes are opened on the inner side of the integrated nut 206. The cross-section of the chutes is slightly larger than the outer cross-section of the installation nut 204. One end of the installation nut 204 is provided with a telescopic spring 205. The other end of the telescopic spring 205 is arranged on the inner side of the chutes. A straight gear disk 208 is rotatably connected to the inner side of the installation frame 1. The straight gear disk 208 is meshed inside the plurality of tooth rings 207. A main frame pipe 203 is arranged on the outer side of the installation frame 1. A plurality of sleeving holes are opened on the outer side of the main frame pipe 203. The main frame pipe 203 is sleeved on the outer sides of the plurality of installation bolts 202 through the plurality of sleeving holes. The integrated nut 206 is slidably connected to the outer side of the main frame pipe 203.

[0022] The effects achieved by the entire Example 1 are as follows: To achieve the efficiency and convenience of building construction, first, place the main frame pipe 203 on the mounting frame 1. The sleeving holes pre-opened on the main pipe frame need to be precisely aligned with the mounting bolts 202 on the main frame pipe 203. After the main frame pipe 203 is stably placed on the mounting frame 1, slide the integrated cap 206 on the main frame pipe 203. During the sliding process, the integrated cap 206 and the mounting nut 204 arranged inside it will slide together towards the direction of the mounting bolt 202 until the mounting nut 204 inside the integrated cap 206 contacts the mounting bolt 202. When the mounting nut 204 contacts the mounting bolt 202, continue to push the integrated cap 206 at this time. Due to the inherent characteristics of the mounting bolt 202 and the mounting nut 204, under the mutual limiting effect, the telescopic spring 205 on the mounting nut 204 will be compressed to generate buffering and pre-tightening forces. After the spring is compressed, the mounting nut 204 and the integrated cap 206 can continue to be pushed. Continuously push the integrated cap 206 until the inner side of the integrated cap 206 is completely in contact with the bottom surface of the main frame pipe 203. Thus, the pre-positioning operation before connection is completed. Then rotate the installation rod 209, and its rotation drives the spur gear disk 208 connected to it to rotate. The spur gear disk 208 drives the gear ring 207 to rotate through the meshing relationship. The teeth blocks installed inside the gear ring 207 drive a plurality of mounting bolts 202 to rotate synchronously as the gear ring 207 rotates. Since the front mounting bolt 202 and the mounting nut 204 are already in contact with each other, when the mounting bolt 202 rotates, it will automatically be threadedly connected to the mounting nut 204 until the main frame pipe 203 is in close contact with the mounting frame 1 and is limited, thereby completing the preliminary connection between the main frame pipe 203 and the mounting frame 1.

[0023] Example 2, according to Figures 4-6As shown, an installation rotating rod 209 is provided inside the main body frame pipe 203. The installation rotating rod 209 meshes with the straight gear disk 208. A rotating disk 216 is installed inside the main body frame pipe 203. A second bevel gear disk 215 is rotatably connected to the outer side of the rotating disk 216. A connecting frame 219 is installed on the outer side of the straight gear disk 208. The other end of the connecting frame 219 is provided with a first bevel gear disk 214. The first bevel gear disk 214 meshes with the second bevel gear disk 215. A limiting groove 220 is rotatably connected to the outer side of the connecting frame 219. A rotating ring is installed on the outer side of the connecting frame 219. The connecting frame 219 is rotatably connected to the limiting groove 220 through the rotating ring. The inner side of the first bevel gear disk 214 is provided with teeth that are the same as those on the inner side of the straight gear disk 208. The first bevel gear disk 214 meshes with the installation rotating rod 209 through the teeth. A straight gear 217 is installed on the top of the second bevel gear disk 215. A rack 218 is provided inside the main body frame pipe 203. The other end of the rack 218 penetrates through the main body frame pipe 203 and is provided with a sliding square pipe 210. A fixing blade 211 is installed on the outer side of the sliding square pipe 210. A threaded cylinder 212 is rotatably connected to the outer side of the fixing blade 211. A two-way bolt 213 is provided inside the threaded cylinder 212. The threaded cylinder 212 meshes with the two-way bolt 213. The other end of the two-way bolt 213 is threadedly connected to another threaded cylinder 212. Another fixing blade 211 is rotatably connected to the inside of the other threaded cylinder 212. A docking rotating piece 221 is installed inside the main body frame pipe 203. A rotating sliding hole that is slightly larger than the cross-section of the installation rotating rod 209 is formed inside the docking rotating piece 221. The rotating sliding hole is rotatably connected to the installation rotating rod 209. The straight gear 217 meshes with the rack 218. The edges of the installation surface where the main body frame pipe 203 is connected to the installation frame 1 are mutually engaging concave and convex surfaces.

[0024] The effects achieved by the entire Embodiment 2 are as follows: When starting to install the main frame pipes 203 of the remaining parts, in order to further improve the stability of the overall structure, they are arranged in an orderly manner according to the concave and convex structures on the main frame pipes 203. Through the structural design of mutual concave and convex engagement, a mechanical interlock is formed between the main frame pipes 203, increasing the stability of the overall structure, avoiding the direct impact on the bolts when the installation frame 1 shakes during use, thus avoiding the risk of bolt loosening and ensuring the reliability of the connection part. In order to make the connection structure more stable, a sliding square pipe 210 is sleeved outside the main frame pipe 203, and a threaded cylinder 212 is rotatably installed on the sliding square pipe 210. After the sliding square pipe 210 is sleeved, a two-way bolt 213 is used to dock with the two threaded cylinders 212 to be connected respectively, and by turning the two-way bolt 213, the distance between the two-way bolt 213 and the threaded cylinder 212 is adjusted according to actual needs to achieve preliminary connection and positioning. Then, the installation rotating rod 209 is used again. Rotating the installation rotating rod 209 drives the first bevel gear disk 214 to rotate. At this time, the first bevel gear disk 214 is connected to the straight gear disk 208 through the installed connecting frame 219. At the same time, a limiting groove 220 is arranged outside the connecting frame 219, and the first bevel gear disk 214 is rotatably connected to the limiting groove 220, further enhancing the stability of the first bevel gear disk 214 during rotation, reducing shaking and deviation. When the first bevel gear disk 214 rotates, the second bevel gear disk 215 engaged with it will be driven to rotate outside the rotating disk 216. While the second bevel gear disk 215 rotates, it drives the straight gear 217 to rotate. Since the rotating straight gear 217 meshes with the rack 218, the rotation of the straight gear 217 will drive it to move. Finally, the movement of the rack 218 will drive the sliding square pipe 210 to move, and through the sliding square pipe 210, the threaded cylinders 212 at each end will be pulled towards both sides of each other. This pulling effect causes a tension to be formed between the two main frame pipes 203 sleeved by the sliding square pipe 210, thereby increasing the lateral displacement resistance and bending resistance of the main frame pipes 203, and improving the stability and safety of the entire building structure.

[0025] The working principle of the whole device is as follows: In order to make the building construction faster and more convenient, first place the main frame pipe 203 on the mounting frame 1. The sleeving holes opened on the main pipe frame correspond to the mounting bolts 202 on the main frame pipe 203. After placing it stably, slide the integrated nut 206 on the main frame pipe 203, so that the integrated nut 206 and the mounting nut 204 inside it slide together in the direction of the mounting bolt 202 until they contact the mounting bolt 202. At this time, continue to push the integrated nut 206. The mounting bolt 202 and the mounting nut 204 limit each other, so that the telescopic spring 205 on the mounting nut 204 is compressed. At this time, the mounting nut 204 and the integrated nut 206 can continue to be pushed. Continue to push the integrated nut 206 until the inner side of the integrated nut 206 contacts the bottom surface of the main frame pipe 203. Then rotate the mounting rod 209, so that the mounting rod 209 drives the straight gear disk 208 to rotate. The straight gear disk 208 drives the gear ring 207 to rotate through the meshing relationship. The tooth blocks installed on the inner side of the gear ring 207 drive a plurality of mounting bolts 202 to rotate synchronously. Since the mounting bolt 202 and the mounting nut 204 are already in contact with each other, the mounting bolt 202 is automatically threadedly connected to the mounting nut 204 when it rotates until the main frame pipe 203 is in close contact with and limited by the mounting frame 1. When starting to install the main frame pipes 203 of the remaining parts, arrange them according to the concave and convex structures on the main frame pipes 203. Through the concave and convex engagement structures with each other, the overall stability can be increased, and the direct impact on the bolts caused by the shaking of the mounting frame 1 can be avoided. In order to make the connection structure more stable, a sliding square pipe 210 is sleeved on the outer side of the main frame pipe 203. A threaded cylinder 212 rotates on the sliding square pipe 210. After the sliding square pipe 210 is sleeved, use the two-way bolt 213 to dock with the two threaded cylinders 212 to be connected respectively and turn the two-way bolt 213. Adjust the distance between the two-way bolt 213 and the threaded cylinder 212 as required. Then use the mounting rod 209 again to drive the first bevel gear disk 214 to rotate. At this time, the first bevel gear disk 214 is connected to the straight gear disk 208 through the installed connecting frame 219, so as to increase the stability of the first bevel gear disk 214. And a limiting groove 220 is arranged on the outer side of the connecting frame 219 and is rotationally connected therewith, further increasing the rotational stability of the first bevel gear disk 214. While the first bevel gear disk 214 rotates, the second bevel gear disk 215 engaged with it is driven to rotate on the outer side of the rotating disk 216. While the second bevel gear disk 215 rotates, it drives the spur gear 217 to rotate. At this time, the rotating spur gear 217 drives the rack 218 to move because it meshes with the rack 218. Finally, the rack 218 drives the sliding square pipe 210 to move, and pulls the threaded cylinders 212 at each end towards both sides through the moving square pipe, increasing the anti-side shift and anti-bending capabilities of the two main frame pipes 203 sleeved by the sliding square pipe 210.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anti-seismic optimization design method for the node connection structure of prefabricated buildings, characterized in that: It includes a mounting bracket (1) and an assembly mechanism (2), and the assembly mechanism (2) is arranged on the outer side of the mounting bracket (1); The assembly mechanism (2) includes a mounting rotating rod (209), mounting bolts (202), integrated nuts (206), second bevel gear discs (215), racks (218) and threaded cylinders (212). When the mounting rotating rod (209) is rotated, the mounting bolts (202) are synchronously driven to rotate, so that multiple groups of mounting bolts (202) are synchronously meshed with the integrated nuts (206) to achieve quick connection. At the same time, the rotation of the mounting bolts (202) drives the second bevel gear discs (215) to rotate synchronously. While the second bevel gear discs (215) are rotating, the racks (218) are driven to translate. The racks (218) are fixed to the threaded cylinders (212) through a connecting structure. Therefore, when the racks (218) move, the threaded cylinders (212) are pulled to tighten them.

2. The seismic optimization design method of the assembled building node connection structure according to claim 1, characterized in that: The assembly mechanism (2) further includes mounting holes (201). The mounting holes (201) are opened on the outer side of the mounting bracket (1). The inner sides of the mounting holes (201) are rotatably connected to the mounting bolts (202). The integrated nuts (206) are arranged on the outer sides of the mounting bolts (202). Mounting nuts (204) are slidably connected to the inner sides of the integrated nuts (206). The mounting nuts (204) are threadedly connected to the mounting bolts (202).

3. The seismic optimization design method of the assembled building node connection structure according to claim 2, characterized in that: A plurality of tooth blocks are equally spaced and fixedly connected to the outer sides of the plurality of mounting bolts (202). The plurality of mounting bolts (202) are grouped in fours. A toothed ring (207) is arranged on the outer side of each group of mounting bolts (202). The toothed ring (207) is meshed with the tooth blocks fixedly connected to the mounting bolts (202).

4. The seismic optimization design method of the assembled building node connection structure according to claim 3, characterized in that: A plurality of sliding channels are opened on the inner side of the integrated nut (206). The cross section of the sliding channels is slightly larger than the outer cross section of the mounting nut (204). One end of the mounting nut (204) is provided with a telescopic spring (205). The other end of the telescopic spring (205) is arranged on the inner side of the sliding channel.

5. The seismic optimization design method for the assembled building node connection structure according to claim 4, characterized in that: A spur gear disc (208) is rotatably connected to the inner side of the mounting bracket (1). The spur gear disc (208) is meshed inside the plurality of toothed rings (207). A main body frame pipe (203) is arranged on the outer side of the mounting bracket (1). A plurality of sleeving holes are opened on the outer side of the main body frame pipe (203). The main body frame pipe (203) is sleeved on the outer sides of the plurality of mounting bolts (202) through the plurality of sleeving holes. The integrated nut (206) is slidably connected to the outer side of the main body frame pipe (203).

6. The seismic optimization design method for the assembled building node connection structure according to claim 5, characterized in that: The mounting rotating rod (209) is arranged on the inner side of the main body frame pipe (203). The mounting rotating rod (209) is meshed with the spur gear disc (208). A rotating disc (216) is arranged on the inner side of the main body frame pipe (203). The second bevel gear disc (215) is rotatably connected to the outer side of the rotating disc (216). A connecting frame (219) is arranged on the outer side of the spur gear disc (208). The other end of the connecting frame (219) is provided with a first bevel gear disc (214).

7. The seismic optimization design method for the prefabricated building joint connection structure according to claim 6, characterized in that: The first bevel gear disc (214) meshes with the second bevel gear disc (215). A limiting groove (220) is rotatably connected to the outer side of the connecting frame (219). A rotating ring is arranged on the outer side of the connecting frame (219). The connecting frame (219) is rotatably connected to the limiting groove (220) through the rotating ring. Teeth identical to those on the inner side of the straight gear disc (208) are arranged on the inner side of the first bevel gear disc (214). The first bevel gear disc (214) meshes with the installation rotating rod (209) through the teeth.

8. The seismic optimization design method for the assembled building node connection structure according to claim 7, characterized in that: A straight gear (217) is arranged on the top of the second bevel gear disc (215). A rack (218) is arranged on the inner side of the main frame tube (203). The other end of the rack (218) penetrates through the main frame tube (203) and a sliding square tube (210) is arranged thereon.

9. The seismic optimization design method of the prefabricated building joint connection structure according to claim 8, characterized in that: A fixed blade (211) is arranged on the outer side of the sliding square tube (210). A threaded cylinder (212) is rotatably connected to the outer side of the fixed blade (211). A double-headed bolt (213) is arranged on the inner side of the threaded cylinder (212). The threaded cylinder (212) meshes with the double-headed bolt (213). The other end of the double-headed bolt (213) is threadedly connected to another threaded cylinder (212). Another fixed blade (211) is rotatably connected to the inner side of the other threaded cylinder (212).

10. The seismic optimization design method for the assembled building node connection structure according to claim 9, characterized in that: A docking rotating piece (221) is arranged on the inner side of the main frame tube (203). A rotating sliding hole slightly larger than the cross-section of the installation rotating rod (209) is formed on the inner side of the docking rotating piece (221). The rotating sliding hole is rotatably connected to the installation rotating rod (209). The straight gear (217) meshes with the rack (218). The edges of the installation surfaces where the main frame tube (203) is connected to the installation frame (1) are concave-convex surfaces that can be mutually engaged.

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