An assembled building and construction method

Abstract

The present invention discloses a prefabricated building and a construction method, which relate to the technical field of prefabricated buildings. The prefabricated building includes a fitting and an assembled wall. A connecting column is rotatably connected inside the fitting, and screw rods are fixedly connected to both ends of the connecting column. A second sliding groove is formed inside the fitting. A stretching mechanism is arranged on the outer wall of the screw rod to drive the assembled wall to translate to the assembly area during assembly. A locking mechanism is arranged on the inner wall of the second sliding groove to clamp and fix the assembled wall during assembly. For this prefabricated building and construction method, during assembly, first, the locking groove is engaged with the L-shaped block, and then the screw rod is rotated. Through the cooperation between the screw rod and the stretching mechanism, the connecting block can be driven to slide towards the inner wall of the installation groove. After the sliding is completed, at this time, the assembled wall will tightly fit against the side wall of the fitting, avoiding the risk that the assembled wall is not installed in place and there are gaps between them, which may easily lead to the shaking of the wall.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated buildings, and particularly to a prefabricated building and a construction method thereof. Background Art

[0002] A green building refers to a building that provides healthy, applicable, and efficient usable space for people throughout its life cycle. Prefabricated buildings are one of the important directions for the development of building structures in China. They are conducive to the development of building industrialization, improve production efficiency, save energy, develop green and environmentally friendly buildings, and are also conducive to improving and ensuring the quality of construction projects. Prefabricated PC structures are conducive to green construction because prefabricated construction better meets the requirements of green construction such as land saving, energy saving, material saving, water saving, and environmental protection, reduces the negative impact on the environment, including reducing noise, preventing dust, reducing environmental pollution, clean transportation, reducing site interference, saving resources and energy such as water, electricity, and materials, and follows the principle of sustainable development.

[0003] If the connection between walls is not strong enough, gaps will appear at the connection later, which easily leads to the shaking of the walls. Generally, it is necessary to ensure the connection strength during assembly. Multiple ear plates need to be welded on the building board. Because the connection strength needs to be ensured, multiple bolt connection pairs need to pass through the through holes on the corresponding ear plates to connect and fix two adjacent building boards together. The above splicing operation is rather troublesome and affects the installation efficiency of the building board. Summary of the Invention

[0004] The purpose of the present invention is to provide a prefabricated building and a construction method thereof to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A prefabricated building includes a fitting and an assembled wall. A connecting column is rotatably connected inside the fitting, and screw rods are fixedly connected to both ends of the connecting column. A second chute is opened inside the fitting;

[0006] A stretching mechanism is arranged on the outer wall of the screw rod to drive the assembled wall to translate to the assembly area during assembly;

[0007] A locking mechanism is arranged on the inner wall of the second chute to clamp and fix the assembled wall during assembly.

[0008] Preferably, the stretching mechanism includes a sliding plate. First rotating shafts are fixedly connected to both ends of the sliding plate. A connecting plate is rotatably connected to the outer wall of the first rotating shaft. A second rotating shaft is rotatably connected to the end of the connecting plate away from the first rotating shaft. A lock block is fixedly connected to the outer wall of the second rotating shaft. A lock groove is opened on the side wall of the lock block. Convex blocks are fixedly connected to the corresponding side walls of the sliding plate.

[0009] Preferably, a first sliding groove is formed inside the fitting, the outer wall of the connecting plate is slidably connected to the inner wall of the first sliding groove, the center of the sliding plate is threadedly connected to the outer wall of the screw rod, and the outer wall of the convex block is slidably connected to the inner wall of the second sliding groove.

[0010] Preferably, the locking mechanism includes a sliding rod and a limiting rod. A T-shaped block is fixedly connected to the bottom of the sliding rod, and a third sliding groove is formed inside the T-shaped block. A top block is slidably connected to the inner wall of the third sliding groove, and a first spring is fixedly connected to the side wall of the top block. One end of the first spring, which is away from the top block, is fixedly connected to the side wall of the third sliding groove. A fixing rod is slidably connected through the T-shaped block. A tension spring is fixedly connected to the corresponding positions of the top of the T-shaped block and the outer wall of the fixing rod. A first tooth groove is formed on the side wall of the sliding rod, and a first gear is meshed with the inner wall of the first tooth groove. A connecting rod is fixedly connected to the center of the first gear, and a second gear is fixedly connected to the outer wall of the connecting rod. A second tooth groove is formed on the side wall of the limiting rod, and the tooth outer wall of the second gear is meshed with the inner wall of the second tooth groove. A limiting block is slidably connected to the outer wall of the limiting rod, and a second spring is fixedly connected to the inner wall of the limiting block. One end of the second spring, which is away from the inclined groove, is fixedly connected to the inside of the fitting.

[0011] Preferably, an inclined groove is formed on the side wall of the limiting block, one end of the limiting rod is slidably connected to the side wall of the inclined groove, an inner groove is formed inside the fitting, the top of the fixing rod is fixedly connected to the top of the inner groove, and one end of the tension spring, which is away from the T-shaped block, is fixedly connected to the top of the inner groove.

[0012] Preferably, an installation groove is formed on the side wall of the fitting, the side wall of the limiting block corresponds to the inside of the installation groove, and the end of the top block corresponds to the outer wall of the convex block.

[0013] Preferably, a connecting block is fixedly connected to the side wall of the assembly wall corresponding to the fitting, and an L-shaped block is fixedly connected to the position of the outer wall of the connecting block corresponding to the lock groove. A clamping groove is formed on the side wall of the connecting block, and the outer wall of the limiting block is slidably attached to the inner wall of the clamping groove.

[0014] Preferably, a fourth sliding groove is formed through the side wall of the fitting, a pressing plate is fixedly connected to the top of the sliding rod, and the outer wall of the pressing plate is slidably connected to the inner wall of the fourth sliding groove.

[0015] The present invention provides the following technical solutions: A construction method for prefabricated buildings includes the following steps:

[0016] Preliminary preparation: First, place the assembly wall to be assembled in the installation area. Then, place the fitting between the two assembly walls. At the same time, engage the lock block with the L-shaped block through the lock groove;

[0017] Translation and fitting: Use a tool to rotate the screw. The cooperation between the screw and the stretching mechanism will drive the entire assembly wall towards the fitting. At the same time, the outer wall of the connecting block will slide along the inner wall of the installation groove. Then, the lock block will be completely retracted into the fitting. Next, the outer wall of the connecting block will completely enter the inner wall of the installation groove, causing the assembly wall to tightly fit against the outer wall of the fitting;

[0018] Tightening and locking: When the sliding plate moves, the cooperation between the convex block and the locking mechanism can cause the T-shaped block to slide towards the inner groove under the tension of the tension spring. At this time, the first gear is driven to rotate through the first tooth groove. Then, the first gear will drive the second gear to rotate synchronously through the connecting rod. Next, the two limiting rods that match and engage with it will slide away from each other. Then, the inclined surface of the limiting rod will squeeze the limiting block, causing the outer wall of the limiting block to slide into the inner wall of the card slot. By engaging multiple limiting blocks on the inner wall of the card slot, the connecting block can be clamped and locked.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. During assembly, first engage the lock groove with the L-shaped block, and then rotate the screw. The cooperation between the screw and the stretching mechanism can drive the connecting block to slide towards the inner wall of the installation groove. After the sliding is completed, the assembly wall will tightly fit against the side wall of the fitting, avoiding the risk that the assembly wall is not installed in place and there are gaps between them, which may easily lead to the shaking of the wall.

[0021] 2. During assembly, when the sliding plate moves, the cooperation between the convex block and the locking mechanism can cause the limiting block to slide into the inner wall of the card slot. By engaging multiple limiting blocks on the inner wall of the card slot, the connecting block can be clamped and locked. There is no need to use multiple ear plates and multiple bolts on the building board, which ensures the connection strength between the assembly walls and improves the construction efficiency of the prefabricated building at the same time. Description of the drawings

[0022] Figure 1 is the flow chart of the construction method of the present invention;

[0023] Figure 2 is the overall structural schematic diagram of the present invention;

[0024] Figure 3 Partial structural cross-sectional view of the present invention;

[0025] Figure 4 Partial structural cross-sectional view of the present invention;

[0026] Figure 5 Structural cross-sectional view of the stretching mechanism of the present invention;

[0027] Figure 6 Schematic structural diagram of the locking mechanism of the present invention;

[0028] Figure 7 Partial structural cross-sectional view of the locking mechanism of the present invention;

[0029] Figure 8 Side cross-sectional view of the fitting of the present invention;

[0030] Figure 9 Of the present invention Figure 8 Enlarged view of the structure at position A in.

[0031] In the figure: 1, fitting; 2, connecting column; 3, screw; 4, stretching mechanism; 401, sliding plate; 402, first rotating shaft; 403, connecting plate; 404, second rotating shaft; 405, lock block; 406, lock groove; 407, convex block; 5, first sliding groove; 6, second sliding groove; 7, locking mechanism; 701, sliding rod; 702, T-shaped block; 703, third sliding groove; 704, first spring; 705, top block; 706, fixed rod; 707, tension spring; 708, first tooth groove; 709, first gear; 710, connecting rod; 711, second gear; 712, limiting rod; 713, second tooth groove; 714, limiting block; 715, inclined groove; 716, second spring; 8, inner groove; 9, assembly wall; 10, connecting block; 11, L-shaped block; 12, card slot; 13, installation groove; 14, fourth sliding groove; 15, pressing plate. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1, please refer to Figures 1-9 , the present invention provides a technical solution: a prefabricated building, including a fitting 1 and an assembly wall 9. The inside of the fitting 1 is rotatably connected with a connecting column 2, and both ends of the connecting column 2 are fixedly connected with screws 3. A second sliding groove 6 is opened inside the fitting 1;

[0034] A stretching mechanism 4 is provided on the outer wall of the screw rod 3, so that when assembling, the assembled wall body 9 can be driven to translate to the assembly area. A connecting block 10 is fixedly connected to the side wall of the assembled wall body 9 corresponding to the assembled part 1, and an L-shaped block 11 is fixedly connected to the position of the outer wall of the connecting block 10 corresponding to the locking groove 406. A clamping groove 12 is formed in the side wall of the connecting block 10, and the inner wall of the clamping groove 12 is in sliding fit with the outer wall of the limiting block 714;

[0035] Further, the stretching mechanism 4 includes a sliding plate 401, and first rotating shafts 402 are fixedly connected to both ends of the sliding plate 401. A connecting plate 403 is rotatably connected to the outer wall of the first rotating shaft 402. A second rotating shaft 404 is rotatably connected to the end of the connecting plate 403 away from the first rotating shaft 402. A locking block 405 is fixedly connected to the outer wall of the second rotating shaft 404. A locking groove 406 is formed in the side wall of the locking block 405. Convex blocks 407 are fixedly connected to the opposite side walls of the sliding plate 401. A first sliding groove 5 is formed inside the assembled part 1. The outer wall of the connecting plate 403 is slidably connected to the inner wall of the first sliding groove 5. The center of the sliding plate 401 is threadedly connected to the outer wall of the screw rod 3. The outer wall of the convex block 407 is slidably connected to the inner wall of the second sliding groove 6. An installation groove 13 is formed in the side wall of the assembled part 1. The side wall of the limiting block 714 corresponds to the inside of the installation groove 13. The end of the top block 705 corresponds to the outer wall of the convex block 407;

[0036] In this embodiment, first, the assembled wall body 9 to be assembled is placed in the installation area, and then the assembled part 1 is placed between the two assembled wall bodies 9. At the same time, the locking block 405 is clamped on the L-shaped block 11 through the locking groove 406. Then, a tool is used to rotate the screw rod 3. Since the sliding plate 401 is threadedly connected to the outer wall of the screw rod 3, when the screw rod 3 rotates, the sliding plate 401 will be driven to move. The threads of the screw rods 3 at both ends of the connecting column 2 are oppositely arranged, so the two sliding plates 401 will move towards each other. When the sliding plate 401 moves, the connecting plate 403 will be driven to move through the first rotating shaft 402. Then, the other end of the connecting plate 403 will contract towards the inside of the assembled part 1, and then the locking block 405 will be driven to move. After that, it is clamped on the L-shaped block 11 through the locking groove 406. Therefore, when the locking block 405 moves, the whole assembled wall body 9 will be driven to approach the assembled part 1. At the same time, the outer wall of the connecting block 10 will slide along the inner wall of the installation groove 13. After the sliding plate 401 moves to the other end of the first sliding groove 5, at this time, the locking block 405 will be completely retracted into the inside of the assembled part 1, and then the outer wall of the connecting block 10 will completely enter the inner wall of the installation groove 13, so that the assembled wall body 9 will closely fit on the outer wall of the assembled part 1;

[0037] As described above, by engaging the locking groove 406 with the L-shaped block 11 and then rotating the screw rod 3, the connecting block 10 can be driven to slide along the inner wall of the installation groove 13 through the cooperation between the screw rod 3 and the stretching mechanism 4. After the sliding is completed, the assembled wall 9 will closely adhere to the side wall of the assembled part 1, preventing the assembled wall 9 from being improperly installed and leaving gaps therebetween, which may easily lead to the risk of wall shaking.

[0038] Embodiment 2: On the basis of the above embodiment, a locking mechanism 7 is provided on the inner wall of the second sliding groove 6 to clamp and fix the assembled wall 9 during assembly.

[0039] Furthermore, the locking mechanism 7 includes a sliding rod 701 and a limiting rod 712. A T-shaped block 702 is fixedly connected to the bottom of the sliding rod 701, and a third sliding groove 703 is formed inside the T-shaped block 702. A top block 705 is slidably connected to the inner wall of the third sliding groove 703, and a first spring 704 is fixedly connected to the side wall of the top block 705. The end of the first spring 704 away from the top block 705 is fixedly connected to the side wall of the third sliding groove 703. A first tooth groove 708 is formed on the side wall of the sliding rod 701, and a first gear 709 is meshed with the inner wall of the first tooth groove 708. A connecting rod 710 is fixedly connected to the center of the first gear 709, and a second gear 711 is fixedly connected to the outer wall of the connecting rod 710. A second tooth groove 713 is formed on the side wall of the limiting rod 712, and the outer teeth of the second gear 711 are meshed with the inner wall of the second tooth groove 713. A limiting block 714 is slidably connected to the outer wall of the limiting rod 712, and a second spring 716 is fixedly connected to the inner wall of the limiting block 714. The end of the second spring 716 away from the inclined groove 715 is fixedly connected to the inside of the assembled part 1. An inclined groove 715 is formed on the side wall of the limiting block 714, and one end of the limiting rod 712 is slidably connected to the side wall of the inclined groove 715.

[0040] In this embodiment, the movement of the sliding plate 401 can drive the convex block 407 to move synchronously. When the convex block 407 moves, the outer wall of the convex block 407 contacts and presses the end of the top block 705 during the process, and then drives the top block 705 to move together. At the same time, the top block 705 drives the sliding rod 701 to move synchronously. When the sliding rod 701 moves, the first gear 709 rotates through the first tooth groove 708. Then, the first gear 709 drives the second gear 711 to rotate coaxially through the connecting rod 710. Then, the second gear 711 drives the two limiting rods 712 to move relative to each other inside the assembled part 1 through the first gear 709. After that, the end of the limiting rod 712 disengages from the inclined groove 715, and then the limiting block 714 is subjected to the elastic force of the second spring 716 and slides from the side wall of the installation groove 13 into the inside of the assembled part 1.

[0041] Since the sliding distance of the top block 705 is shorter than that of the convex block 407, when the sliding plate 401 is about to complete its fast sliding, the top block 705 has already stopped sliding. Then, the top block 705 will slide into the third chute 703 inside the T-shaped block 702 due to the extrusion of the convex block 407. After the convex block 407 passes over the top block 705, the sliding plate 401 also completes its sliding. At the same time, the outer wall of the connecting block 10 will completely fit against the inner wall of the installation groove 13. Since a fixing rod 706 is slidably connected through the inside of the T-shaped block 702, a tension spring 707 is fixedly connected to the corresponding position on the outer wall of the fixing rod 706 at the top of the T-shaped block 702. An inner groove 8 is provided inside the fitting 1, and the top of the fixing rod 706 is fixedly connected to the top of the inner groove 8. One end of the tension spring 707 away from the T-shaped block 702 is fixedly connected to the top of the inner groove 8. Then, the top block 705 is disengaged from the convex block 407 and will be reset by the elastic force of the first spring 704. At the same time, the T-shaped block 702 will slide towards the inner groove 8 under the pulling force of the tension spring 707. During this process, the first gear 709 will be rotated by driving the first tooth groove 708. Then, the first gear 709 will drive the second gear 711 to rotate synchronously through the connecting rod 710. Then, the two limiting rods 712 that are matched and engaged with it will slide away from each other. After that, the inclined surface of the limiting rod 712 will fit and slide on the side wall of the inclined groove 715, and at the same time, it will squeeze the limiting block 714, so that the outer wall of the limiting block 714 slides to the inner wall of the card slot 12. By clamping the inner wall of the card slot 12 with multiple limiting blocks 714, the connecting block 10 can be clamped and locked;

[0042] After that, when disassembling, a fourth chute 14 is provided through the side wall of the fitting 1. A pressing plate 15 is fixedly connected to the top of the sliding rod 701, and the outer wall of the pressing plate 15 is slidably connected to the inner wall of the fourth chute 14. Then, the pressing plate 15 is pressed. Through the cooperation between the pressing plate 15 and the locking mechanism 7, the limiting block 714 can be disengaged from the inside of the card slot 12 and then retracted into the fitting 1. Then, the screw 3 is rotated by a tool. Through the cooperation between the screw 3 and the stretching mechanism 4, the assembled wall 9 can be pushed out by the L-shaped block 11, thus completing the rapid disassembly.

[0043] Through the above, when the sliding plate 401 moves, the limiting block 714 can slide to the inner wall of the card slot 12 through the cooperation between the convex block 407 and the locking mechanism 7. By clamping the inner wall of the card slot 12 with multiple limiting blocks 714, the connecting block 10 can be clamped and locked, eliminating the need for multiple ear plates and multiple bolts on the building board, thus ensuring the connection strength between the assembled walls 9 and improving the construction efficiency of the prefabricated building at the same time.

[0044] Construction process: First, place the assembled wall 9 to be assembled in the installation area. Then, place the assembled part 1 between the two assembled walls 9. At the same time, snap the locking block 405 onto the L-shaped block 11 through the locking groove 406. Next, use a tool to rotate the screw rod 3. Since the sliding plate 401 is threadedly connected to the outer wall of the screw rod 3, when the screw rod 3 rotates, it will drive the sliding plate 401 to move. The threads of the screw rods 3 at both ends of the connecting column 2 are set in opposite directions, so the two sliding plates 401 will move towards each other. When the sliding plate 401 moves, the other end of the connecting plate 403 will contract towards the inside of the assembled part 1, and then drive the locking block 405 to move. Then, it is snapped onto the L-shaped block 11 through the locking groove 406. So when the locking block 405 moves, it will drive the entire assembled wall 9 to approach the assembled part 1. At the same time, the outer wall of the connecting block 10 will slide along the inner wall of the installation groove 13. After the sliding plate 401 moves to the other end of the first sliding groove 5, at this time, the locking block 405 will completely retract into the inside of the assembled part 1, and then the outer wall of the connecting block 10 will completely enter the inner wall of the installation groove 13, making the assembled wall 9 tightly fit against the outer wall of the assembled part 1;

[0045] The movement of the sliding plate 401 can drive the synchronous movement of the convex block 407. When the convex block 407 moves, during the process, the outer wall of the convex block 407 contacts and presses the end of the top block 705, and then drives the top block 705 to move together. At the same time, the top block 705 will drive the sliding rod 701 to move synchronously. While the sliding rod 701 moves, the first gear 709 will rotate through the first tooth groove 708. Then, the first gear 709 will drive the second gear 711 to rotate coaxially through the connecting rod 710. Then, the second gear 711 will drive the two limiting rods 712 to move towards each other inside the assembled part 1 through the first gear 709. After that, the end of the limiting rod 712 will disengage from the inclined groove 715, and then the limiting block 714 will be subjected to the elastic force of the second spring 716 and slide from the side wall of the installation groove 13 into the inside of the assembled part 1;

[0046] Since the sliding distance of the top block 705 is shorter than that of the convex block 407, when the sliding plate 401 is about to complete its fast sliding, the top block 705 has already stopped sliding at this time. Then, the top block 705 will slide into the third chute 703 inside the T-shaped block 702 due to the extrusion of the convex block 407. After the convex block 407 passes over the top block 705, the sliding plate 401 also completes its sliding at this time. At the same time, the outer wall of the connecting block 10 will completely fit against the inner wall of the installation groove 13. Since a fixing rod 706 is slidably connected through the inside of the T-shaped block 702, a tension spring 707 is fixedly connected to the corresponding position of the outer wall of the fixing rod 706 at the top of the T-shaped block 702. An inner groove 8 is provided inside the fitting 1, and the top of the fixing rod 706 is fixedly connected to the top of the inner groove 8. One end of the tension spring 707 away from the T-shaped block 702 is fixedly connected to the top of the inner groove 8. Then, the top block 705 is disengaged from the convex block 407, and then it will be reset by the elastic force of the first spring 704. At the same time, the T-shaped block 702 will slide in the direction of the inner groove 8 under the pulling force of the tension spring 707. During this process, the first gear 709 will be rotated by driving the first tooth groove 708, and then the first gear 709 will drive the second gear 711 to rotate synchronously through the connecting rod 710. Then, the two limiting rods 712 that are matched and engaged with it will slide away from each other. After that, the inclined surface of the limiting rod 712 will fit and slide on the side wall of the inclined groove 715, and at the same time, it will squeeze the limiting block 714, so that the outer wall of the limiting block 714 slides to the inner wall of the card slot 12. By engaging a plurality of limiting blocks 714 on the inner wall of the card slot 12, the connecting block 10 can be clamped and locked.

[0047] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled building, comprising an assembly part (1) and an assembly wall (9), characterized in that: A connecting column (2) is rotatably connected inside the assembly part (1), and screw rods (3) are fixedly connected to both ends of the connecting column (2). A second sliding groove (6) is provided inside the assembly part (1); The outer wall of the screw rod (3) is provided with a stretching mechanism (4) so ​​as to drive the assembly wall (9) to move horizontally to the assembly area during assembly; The inner wall of the second sliding groove (6) is provided with a locking mechanism (7) for clamping and fixing the assembly wall (9); The stretching mechanism (4) comprises a sliding plate (401), and both ends of the sliding plate (401) are fixedly connected to a first rotating shaft (402), and the outer wall of the first rotating shaft (402) is rotatably connected to a connecting plate (403), and the end of the connecting plate (403) away from the first rotating shaft (402) is rotatably connected to a second rotating shaft (404), and the outer wall of the second rotating shaft (404) is fixedly connected to a locking block (405), and the side wall of the locking block (405) is provided with a locking groove (406), and the corresponding two side walls of the sliding plate (401) are fixedly connected to protrusions (407); A first slide groove (5) is provided inside the assembly part (1), the outer wall of the connecting plate (403) is slidably connected to the inner wall of the first slide groove (5), the central thread of the sliding plate (401) is connected to the outer wall of the screw rod (3), and the outer wall of the protrusion (407) is slidably connected to the inner wall of the second slide groove (6); The locking mechanism (7) comprises a sliding rod (701) and a limiting rod (712); a T-shaped block (702) is fixedly connected to the bottom of the sliding rod (701); a third sliding groove (703) is provided inside the T-shaped block (702); a top block (705) is slidably connected to the inner wall of the third sliding groove (703); a first spring (704) is fixedly connected to the side wall of the top block (705); an end of the first spring (704) away from the top block (705) is fixedly connected to the side wall of the third sliding groove (703); a fixed rod (706) is slidably connected to the inside of the T-shaped block (702); a tension spring (707) is fixedly connected to the top of the T-shaped block (702) and the outer wall of the fixed rod (706) at a position corresponding to the first tooth groove; and a first tooth groove is provided on the side wall of the sliding rod (701). (708), and the inner wall of the first tooth groove (708) is matched and meshed with a first gear (709), the center of the first gear (709) is fixedly connected with a connecting rod (710), and the outer wall of the connecting rod (710) is fixedly connected with a second gear (711), the side wall of the limiting rod (712) is provided with a second tooth groove (713), the outer wall of the gear teeth of the second gear (711) is matched and meshed with the inner wall of the second tooth groove (713), the outer wall of the limiting rod (712) is slidably connected with a limiting block (714), and the inner wall of the limiting block (714) is fixedly connected with a second spring (716), the side wall of the limiting block (714) is provided with an inclined groove (715), and the end of the second spring (716) away from the inclined groove (715) is fixedly connected to the inside of the assembly (1).

2. The prefabricated building according to claim 1, characterized in that: One end of the limiting rod (712) is slidably connected to the side wall of the inclined groove (715), an inner groove (8) is provided inside the assembly part (1), the top of the fixing rod (706) is fixedly connected to the top of the inner groove (8), and the end of the tension spring (707) away from the T-block (702) is fixedly connected to the top of the inner groove (8).

3. The prefabricated building according to claim 2, characterized in that: The side wall of the assembly part (1) is provided with a mounting groove (13), the side wall of the limit block (714) corresponds to the inside of the mounting groove (13), and the end of the top block (705) corresponds to the outer wall of the protrusion (407).

4. The prefabricated building according to claim 3, characterized in that: The side wall of the assembly wall (9) corresponding to the assembly part (1) is fixedly connected with a connection block (10), and the outer wall of the connection block (10) is fixedly connected with an L-shaped block (11) at a position corresponding to the locking groove (406), and the side wall of the connection block (10) is provided with a locking groove (12), and the inner wall of the locking groove (12) is slidably fitted with the outer wall of the limit block (714).

5. The prefabricated building according to claim 3, characterized in that: A fourth slide groove (14) is formed through the side wall of the assembly part (1), a pressing plate (15) is fixedly connected to the top of the sliding rod (701), and an outer wall of the pressing plate (15) is slidably connected to an inner wall of the fourth slide groove (14).

6. A construction method using the prefabricated building according to claim 4, characterized in that: The following steps are involved: S1: Pre-preparation, placing the assembly wall (9) in the installation area, then placing the assembly part (1) between the two assembly walls (9), and at the same time, locking the locking block (405) on the L-shaped block (11) through the locking groove (406); S2: Translational fit: rotating the screw rod (3) to drive the assembly wall (9) as a whole to approach the assembly part (1), while the outer wall of the connecting block (10) slides along the inner wall of the installation groove (13), after which the locking block (405) is completely retracted into the interior of the assembly part (1), and then the outer wall of the connecting block (10) completely enters the inner wall of the installation groove (13), so that the assembly wall (9) fits against the outer wall of the assembly part (1); S3: Tightening and locking. When the sliding plate (401) moves, the T-block (702) is pulled by the tension of the tension spring (707) through the protrusion (407) and the locking mechanism (7) to slide in the direction of the inner groove (8). At this time, the first gear (709) is driven to rotate through the first tooth groove (708), and then the first gear (709) drives the second gear (711) to rotate synchronously through the connecting rod (710). Then, the two matching limit rods (712) that are meshed with it slide away from each other, and then the inclined surface of the limit rod (712) presses the limit block (714) to make the outer wall of the limit block (714) slide to the inner wall of the slot (12). Through the multiple limit blocks (714) being engaged with the inner wall of the slot (12), the connecting block (10) is clamped and locked.

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