Anti-seismic connection point structure for fabricated building

Abstract

The utility model relates to an anti-seismic connection point structure for a fabricated building, which is arranged at a wall corner and comprises three angle irons and a fastener. The first bolt penetrates through the through hole of the three-face angle iron and then is screwed into the inner wall of the embedded pipe, detachable connection of the three-face angle iron and the embedded pipe is achieved, and meanwhile the connection rigidity is ensured through pre-tightening force. And the movable column is screwed on the screw rod. The inserting rod extends to the position near the inclined pipe through the inclined hole but does not completely intervene, and the structure is in a conventional bearing state. And the screw rod is rotated, so that the moving column axially moves along the shaft hole. The inclined faces on the two sides of the movable column extrude the sliding blocks, and the inserting rods are forced to slide into the inclined pipes along the inclined holes. After the inserting rod is completely inserted into the inclined pipe, further displacement of the structure is limited through mechanical engagement. The inclined inserting rod system forms a space inclined supporting effect, compared with a traditional plane connection mode, the lateral stiffness is improved, and torsional deformation of the structure is effectively restrained.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building technology, specifically to a seismic connection point structure for prefabricated buildings. Background Technology

[0002] The connection nodes in prefabricated buildings are a crucial aspect of the structural design of prefabricated rural houses. Prefabricated rural house units typically employ reinforced concrete shear wall structures. Each prefabricated unit has pre-drilled connection holes and sleeves within the wall. Bolts and connecting steel plates are installed within the sleeves, or through-wall tie rods are used to connect the units into a whole, ensuring the vertical and horizontal integrity of the wall. Structural units are fixed together using pre-tensioned bolts. The bolts are screwed into the sleeves embedded in the building, with the bolt caps abutting against the connecting steel plates. However, bolts screwed into the embedded sleeves are prone to loosening, leading to overall structural instability. Utility Model Content

[0003] The main purpose of this utility model is to provide a seismic connection point structure for prefabricated buildings, so as to solve the problem that bolted connections to sleeves embedded in the building are prone to loosening and instability, resulting in overall structural instability.

[0004] To achieve the above objectives, this utility model provides a seismic connection point structure for prefabricated buildings, which is set at the corner of the wall and includes three angle irons and fasteners.

[0005] Each side of the three-sided angle iron is equipped with a fastener;

[0006] The fasteners include the embedded pipe, the first bolt, the frame, and the screw.

[0007] The embedded pipe is embedded in the building, with one end abutting against one side of the three-sided angle iron. Two inclined pipes are symmetrically connected on the embedded pipe.

[0008] The first bolt passes through the three-sided angle iron and is screwed to the inner wall of the pre-embedded pipe. A shaft hole is opened at the top along its axial direction. Angled holes are symmetrically opened on both sides of the first bolt. The two angled holes are symmetrically connected on both sides of the shaft hole.

[0009] The screw is coaxially mounted in the shaft hole through the frame and is screwed onto a movable column. The movable column has symmetrical inclined surfaces on both sides, and each inclined surface has a groove. A slider slides in the groove, and an insert rod is fixed on the slider. The insert rod passes through the inclined hole and can be inserted into the inclined tube.

[0010] Preferably, the fastener also includes a washer fitted onto the first bolt and located between the cap of the first bolt and one side of the triangular angle iron.

[0011] Preferably, the top of the shaft hole has a stepped structure, and the frame is fixed on the stepped structure.

[0012] Preferably, the frame has an annular groove, and a turntable is rotatably embedded in the annular groove;

[0013] One end of the screw is threaded into the shaft hole and screwed onto the movable column;

[0014] The frame includes a first ring, two second rings, and multiple second bolts;

[0015] The inner diameter of the first ring is larger than the inner diameter of the second ring, and all three are coaxially arranged with the shaft hole, with the first ring located between the two second rings;

[0016] Multiple second bolts are arranged circumferentially on one side of a second ring. The second bolts pass through the second ring, the first ring, and another second ring in sequence and are screwed into the stepped structure. The inner ring of the first ring and the opposite sidewalls of the two second rings form an annular groove.

[0017] Preferably, a limiting plate is fixed at the pre-embedded end of the pre-embedded pipe, and the bolt end of the first bolt abuts against the limiting plate.

[0018] Preferably, the three-sided angle iron includes an L-shaped plate and a rectangular plate, with one side of the L-shaped plate fixedly connected to the two sides of the rectangular plate.

[0019] Preferably, a three-sided pre-reserved groove is opened at the corner of the wall, and the three-sided angle iron is attached to the three-sided pre-reserved groove.

[0020] Preferably, the embedded pipe is an internally threaded pipe, which is screwed to the first bolt.

[0021] Preferably, the movable column has a threaded hole along its axial direction, and the threaded rod is screwed to the first screw.

[0022] The beneficial effects of the above scheme are:

[0023] The embedded pipe is pre-fixed within the prefabricated building wall, with its end tightly abutting against the corresponding surface of the three-sided angle iron, forming initial positioning. The first bolt penetrates the through hole of the three-sided angle iron and is screwed into the inner wall of the embedded pipe, achieving a detachable connection between the three-sided angle iron and the embedded pipe. Simultaneously, pre-tightening ensures connection rigidity. The movable column is screwed onto the threaded rod. The insertion rod extends through the inclined hole to the vicinity of the inclined pipe but is not fully inserted, and the structure is in a conventional load-bearing state. Rotating the threaded rod causes the movable column to move axially along the shaft hole. The inclined surfaces on both sides of the movable column press against the slider, forcing the insertion rod to slide into the inclined pipe along the inclined hole. After the insertion rod is fully inserted into the inclined pipe, mechanical engagement restricts further structural displacement. The inclined insertion rod system creates a spatial bracing effect, increasing lateral stiffness compared to traditional planar connections and effectively suppressing structural torsional deformation. One end of the threaded rod is aligned with the shaft, and the end of the shaft away from the threaded rod passes through a slot on the turntable, with the shaft fixed to the turntable. Attached Figure Description

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] Figure 1 This is a three-dimensional structural diagram of the application of this utility model in prefabricated buildings;

[0026] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 3 This is a structural schematic diagram showing a partial cross-sectional view of the present invention;

[0028] Figure 4 This is a structural schematic diagram of the sturdy component of this utility model in an exploded state;

[0029] Figure 5 This is a schematic diagram of the structure of the movable column of this utility model.

[0030] Explanation of reference numerals in the attached figures

[0031] 9. Three-sided angle iron; 90. Through hole; 13. Fastener; 130. Embedded pipe; 131. First bolt; 132. Frame; 133. Screw; 3. Assembly building; 1301. Inclined pipe; 1310. Shaft hole; 1311. Inclined hole; 1320. Annular groove; 134. Turntable; 135. Moving column; 1351. Threaded hole; 1350. Inclined surface; 136. Slide groove; 137. Slider; 138. Insert rod; 1. Shaft; 11. Slotted groove; 139. Washer; 1312. Step structure; 1320. First ring; 1321. Second ring; 1302. Limiting plate; 91. L-shaped plate; 92. Rectangular plate; 14. Three-sided reserved groove. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Example

[0033] like Figures 1-5 As shown, this embodiment provides a seismic connection point structure for prefabricated buildings, which is set at the corner of the wall, such as... Figure 1 As shown, a three-sided pre-reserved groove 14 is opened at the corner of the prefabricated building wall, and a three-sided angle iron 9 is attached to the three-sided pre-reserved groove 14. The seismic connection point structure used in prefabricated buildings includes the three-sided angle iron 9 and the fastener 13. Figure 2As shown, the three-sided angle iron 9 includes an L-shaped plate 91 and a rectangular plate 92. One side of the L-shaped plate 91 is fixedly connected to the two sides of the rectangular plate 92. Each side of the three-sided angle iron 9 is provided with a fastener 13. Each side has a through hole 90. The fastener 13 includes an embedded pipe 130, a first bolt 131, a frame 132 mounted on the first bolt, and a screw 133. The embedded pipe 130 is embedded within the assembly building 3, and one end of the embedded pipe 130 abuts against one side of the three-sided angle iron 9. Two inclined pipes 1301 are symmetrically connected to the embedded pipe 130. Figure 3 As shown, the top of the shaft hole 1310 has a stepped structure 1312, on which a frame 132 is fixed. The frame 132 has an annular groove 1320, in which a turntable 134 is rotatably embedded. One end of a screw 133 passes through the shaft hole 1310 and is screwed onto a movable post 135. The frame 132 includes a first ring 1320, two second rings 1321, and a plurality of second bolts (not shown). The inner diameter of the first ring 1320 is larger than the inner diameter of the second rings 1321, and all three are coaxially arranged with the shaft hole 1310. The first ring 1320 is located between the two second rings 1321. Multiple second bolts are arranged circumferentially on one side of a second ring 1321. The second bolts pass through the second ring 1321, the first ring 1320, and another second ring 1321 in sequence and are screwed into the stepped structure 1312, thus completing the frame installation. The inner ring of the first ring 1320 and the opposite sidewalls of the two second rings 1321 form an annular groove 1320. One end of the screw 133 is welded to the turntable 134, and the other end of the screw 133 passes through the shaft hole 1310 and is screwed into the moving column 135. The first bolt 131 passes through the three-sided angle iron 9 and is screwed into the inner wall of the pre-embedded pipe 130, and the top has a shaft hole 1310 opened along its axial direction. The two oblique holes 1311 are symmetrically opened on both sides of the first bolt 131, and the two oblique holes 1311 are symmetrically connected on both sides of the shaft hole 1310. The screw 133 is coaxially mounted in the shaft hole 1310 via the frame 132, and a movable column 135 is screwed onto the screw 133. The movable column 135 has symmetrically arranged inclined surfaces 1350 on both sides, and each inclined surface 1350 has a groove 136. A slider 137 slides within the groove 136, and an insert rod 138 is fixed to the slider 137. The insert rod 138 passes through the inclined hole 1311 and can be inserted into the inclined tube 1301. Rotating the screw 133 drives the turntable 134 to rotate within the annular groove 1320. Because the frame 132 is stably anchored, the rotation of the turntable 134 is converted into axial displacement of the screw 133. The screw 133 threadedly pushes the movable column 135 to move along the shaft hole 1310, and the inclined surface 1350 presses against the slider 137, driving the insert rod 138 to slide towards the inclined hole 1311. The fastener 13 also includes a washer 139, which is fitted onto the first bolt 131 and is located between the cap of the first bolt 131 and one side of the triangular angle iron 9.

[0034] The embedded pipe 130 is pre-fixed to the wall of the prefabricated building 3, with its end tightly abutting against the corresponding surface of the triangular angle iron 9, forming an initial positioning. The first bolt 131 penetrates the through hole 90 of the triangular angle iron 9 and is screwed into the inner wall of the embedded pipe 130, realizing a detachable connection between the triangular angle iron and the embedded pipe 130, while ensuring connection rigidity through pre-tightening force. The movable column 135 is screwed onto the screw rod 133. The insertion rod 138 extends through the inclined hole 1311 to the vicinity of the inclined pipe 1301 but is not fully inserted, and the structure is in a normal load-bearing state. Rotating the screw rod 133 causes the movable column 135 to move axially along the shaft hole 1310. The inclined surfaces 1350 on both sides of the movable column 135 press against the slider 137, forcing the insertion rod 138 to slide into the inclined pipe 1301 along the inclined hole 1311. After the insertion rod 138 is fully inserted into the inclined pipe 1301, further displacement of the structure is restricted by mechanical engagement. The inclined insert rod 138 system forms a spatial diagonal bracing effect, which improves the lateral stiffness compared with the traditional planar connection method and effectively suppresses the torsional deformation of the structure. One end of the screw 133 is axially connected to the shaft 1, and the end of the shaft 1 away from the screw 133 passes through the end of the turntable 134 and has a slot 11, and the shaft 1 is fixed on the turntable 134.

[0035] A limiting plate 1302 is fixed to the pre-embedded end of the pre-embedded pipe 130, and the bolt end of the first bolt 131 abuts against the limiting plate 1302. This makes the inclined hole 1311 and the inclined pipe 1301 coaxially arranged, which facilitates the coaxial arrangement of the two, allowing the insertion rod 138 to be inserted into the inclined pipe 1301 through the inclined hole 1311. The movable column 135 has a threaded hole 1351 along its axial direction, and the threaded hole 1351 is screwed to the first screw 133.

[0036] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A seismic connection point structure for prefabricated buildings, located at the corner of a wall, characterized in that, include: A three-sided angle iron, wherein each side of the three-sided angle iron is provided with a fastener; The fastener includes an embedded pipe, a first bolt, a frame mounted on the first bolt, and a screw. The embedded pipe is embedded in the building, and one end abuts against one side of the three-sided angle iron. Two inclined pipes are symmetrically connected on the embedded pipe. The first bolt passes through the three-sided angle iron and is screwed to the inner wall of the pre-embedded pipe, and a shaft hole is opened at the top along its axial direction. Two oblique holes are symmetrically opened on both sides of the first bolt. The screw is coaxially mounted in the shaft hole through the frame and is screwed onto a movable column. The movable column has symmetrical inclined surfaces on both sides, and each inclined surface has a sliding groove. A slider slides in the groove, and an insert rod is fixed on the slider. The insert rod passes through the inclined hole and can be inserted into the inclined tube.

2. The seismic connection point structure for prefabricated buildings according to claim 1, characterized in that, The fastener also includes a washer fitted onto the first bolt and located between the cap of the first bolt and one side of the triangular angle iron.

3. The seismic connection point structure for prefabricated buildings according to claim 1, characterized in that, The top of the shaft hole has a stepped structure, and the frame is fixed on the stepped structure.

4. The seismic connection point structure for prefabricated buildings according to claim 3, characterized in that, The frame has an annular groove, and a turntable is rotatably embedded in the annular groove. One end of the screw is aligned with the shaft, and the end of the shaft away from the screw passes through the end of the turntable and is slotted and fixed on the turntable. One end of the screw is threaded into the shaft hole and connected to the movable column; The frame includes a first ring, two second rings, and multiple second bolts; The inner diameter of the first ring is larger than the inner diameter of the second ring, and all three are coaxially arranged with the shaft hole, with the first ring located between the two second rings; Multiple second bolts are circumferentially arranged on one side of a second ring. The second bolts pass through the second ring, the first ring, and another second ring in sequence and are screwed into the stepped structure. The inner ring of the first ring and the sidewalls of the two second rings opposite each other form the annular groove.

5. The seismic connection point structure for prefabricated buildings according to claim 1, characterized in that, A limiting plate is fixed at the pre-embedded end of the pre-embedded pipe, and the bolt end of the first bolt abuts against the limiting plate.

6. The seismic connection point structure for prefabricated buildings according to claim 1, characterized in that, The three-sided angle iron includes an L-shaped plate and a rectangular plate, with one side of the L-shaped plate fixedly connected to the two sides of the rectangular plate.

7. The seismic connection point structure for prefabricated buildings according to claim 1, characterized in that, Three pre-reserved grooves are opened at the corner of the wall, and the three angle irons are attached to the three pre-reserved grooves.

8. The seismic connection point structure for prefabricated buildings according to claim 1, characterized in that, The embedded pipe is an internally threaded pipe, and the internally threaded pipe is screwed to the first bolt.

9. The seismic connection point structure for prefabricated buildings according to claim 1, characterized in that, The movable column has a threaded hole along its axial direction, and the threaded rod is screwed to the first screw.

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