Shear wall to bolt rubber expansion plug mounting device

Abstract

The utility model discloses shear wall counter pull bolt rubber expansion plug installation device, include: rubber expansion plug, including elastic rubber plug, extrusion device and nut, extrusion device sets up in the elastic rubber plug inside, is composed by base, screw rod, first gasket and second gasket, the screw rod is followed through first gasket, elastic rubber plug and second gasket behind, with the nut screw thread connection, the outer circumferential surface of nut is equipped with cylindrical convex, the utility model discloses through the mechanical expansion of rubber expansion plug realizes the first physical seal, and then forms the second chemical seal through the injection of micro -expansion sealing paste, and the active compensation contraction fundamentally solves the leakage hidden danger. T-shaped spanner and expansion plug adopt L-shaped recess quick -joint structure between, and the connection is stable, and the installation depth is accurately controlled to guarantee construction quality with scale rod body, easy to dismount.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, specifically relating to a rubber expansion plug installation device for shear wall tie bolts. Background Technology

[0002] In the construction of shear wall structures, tie bolts are a key component for formwork reinforcement. After formwork removal, through bolt holes will be left in the wall. These holes must be effectively sealed to prevent moisture penetration, which could affect the durability and functionality of the building structure.

[0003] Traditional sealing methods commonly use mortar or expanding foam for filling. However, mortar is prone to shrinkage cracks after hardening, and expanding foam suffers from aging and shrinkage; neither can guarantee a long-term seal. Furthermore, traditional construction processes are cumbersome, requiring layered filling and lengthy curing times, resulting in low efficiency. More importantly, sealing external wall openings typically requires working at height using scaffolding or suspended platforms, which is not only costly but also poses significant safety risks. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a rubber expansion plug installation device for shear wall tie bolts, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rubber expansion plug installation device for shear wall tie bolts, comprising: A rubber expansion plug includes an elastic rubber plug, a compression device, and a nut. The compression device is disposed inside the elastic rubber plug and consists of a base, a screw, a first washer, and a second washer. The screw passes through the first washer, the elastic rubber plug, and the second washer in sequence and is threadedly connected to the nut. The outer circumferential surface of the nut is provided with a cylindrical protrusion. A T-shaped wrench includes a graduated rod, a socket, and a horizontal handle. The socket is fixed to one end of the graduated rod, and its inner wall has an L-shaped groove that matches the cylindrical protrusion. The horizontal handle is vertically fixed to the other end of the graduated rod. A rubber base with a flow guide tube includes an elastic rubber base and a flow guide tube integrally formed on one side thereon. The outer diameter of the elastic rubber base is larger than the diameter of the tie bolt hole, and the outer surface is provided with multiple serrated barbs. The flow guide tube is provided with a feed inlet and a vent, and the vent is located above the feed inlet.

[0006] Preferably, the base of the extrusion device is fixedly connected to one end of the screw, and the outer diameter of the base is larger than the inner diameter of the elastic rubber plug.

[0007] Preferably, the L-shaped groove extends axially along the sleeve and then bends circumferentially, and the cylindrical protrusion can slide and lock along the L-shaped groove.

[0008] Preferably, the starting point of the scale on the graduated rod is the end face of the sleeve, used to indicate the depth to which the rubber expansion plug extends into the tie bolt hole.

[0009] Preferably, the serrated barbs are evenly distributed along the circumference of the elastic rubber base, and the direction of the barbs is inclined toward the central axis of the elastic rubber base.

[0010] Preferably, a sealing ring is provided at the connection between the guide tube and the elastic rubber base, and both the inlet and outlet are connected to the internal cavity of the guide tube.

[0011] Compared with the prior art, this utility model provides a rubber expansion plug installation device for shear wall tie bolts, which has the following advantages: 1. This utility model achieves the first physical seal through the mechanical expansion of the rubber expansion plug, and then forms the second chemical seal through the injection of micro-expansion sealant, which actively compensates for shrinkage and fundamentally solves the risk of leakage.

[0012] 2. The T-shaped wrench and the expansion plug of this utility model adopt an L-shaped groove quick-connect structure, which makes the connection stable and easy to disassemble and assemble. The graduated rod body enables precise control of the installation depth and ensures the construction quality.

[0013] 3. This utility model simplifies the sealing process, eliminates the need for layered operations and long-term maintenance, improves construction efficiency, and eliminates the need for scaffolding or suspended platforms, allowing for early removal of scaffolding, which greatly reduces construction costs and safety hazards.

[0014] The entire device has a simple structure, low manufacturing cost, and is easy to operate, making it suitable for widespread application in the construction industry. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 Schematic diagram of a plug sealing device for tie bolts in shear walls; Figure 2 Schematic diagram of rubber expansion plug fixing; Figure 3 This is a front view of a rubber expansion plug; Figure 4 Side view of the rubber expansion plug; Figure 5 This is a cross-sectional view of the rubber expansion plug; Figure 6This is a schematic diagram of a T-shaped wrench; Figure 7 This is a cross-sectional view of the sleeve of a T-shaped wrench. Figure 8 A schematic diagram of a rubber base with a flow guide tube; Figure 9 This is a side view of the rubber base with a flow guide tube. Figure 10 This is a cross-sectional view of the rubber base with a flow guide tube. In the picture: 1. Rubber expansion plug; 101. Elastic rubber plug; 102. Compression device; 103. Nut; 2. T-shaped wrench; 201. Socket; 202. Scaled lever; 203. Horizontal handle; 3. Rubber base with guide tube; 301. Elastic rubber base; 302. Guide tube; 303. Feed inlet; 304. Exhaust port. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-10 This utility model provides a technical solution: a rubber expansion plug installation device for shear wall tie bolts, which consists of three core components, including: The rubber expansion plug 1 includes an elastic rubber plug 101, a compression device 102 and a nut 103. The compression device 102 is disposed inside the elastic rubber plug 101 and consists of a base, a screw, a first washer and a second washer. The screw passes through the first washer, the elastic rubber plug 101 and the second washer in sequence and is threadedly connected to the nut 103. The outer circumferential surface of the nut 103 is provided with a cylindrical protrusion. T-shaped wrench 2 includes a graduated rod 202, a sleeve 201 and a horizontal handle 203. The sleeve 201 is fixed to one end of the graduated rod 202 and has an L-shaped groove on its inner wall that matches the cylindrical protrusion. The horizontal handle 203 is vertically fixed to the other end of the graduated rod 202. The rubber base 3 with a guide tube includes an elastic rubber base 301 and a guide tube 302 integrally formed on one side thereon. The outer diameter of the elastic rubber base 301 is larger than the diameter of the tie bolt hole, and the outer surface is provided with multiple serrated barbs. The guide tube 302 is provided with a feed inlet 303 and an exhaust port 304, and the exhaust port 304 is located above the feed inlet 303.

[0018] like Figure 3 , Figure 4 , Figure 5 As shown, the rubber expansion plug 1 is the core sealing component. The base of the internal compression device 102 is embedded in one end of the elastic rubber plug 101. The screw passes through the first washer, the through hole in the center of the elastic rubber plug 101 and the second washer in sequence, and the end is screwed into the nut 103. When the nut 103 is tightened, the screw will be pulled, causing the first washer and the second washer to move towards each other, thereby squeezing the elastic rubber plug 101 from both the inside and outside, causing it to expand radially. The cylindrical protrusion on the outside of the nut 103 is the key to the connection with the wrench.

[0019] In this utility model, preferably, the base of the extrusion device 102 is fixedly connected to one end of the screw, and the outer diameter of the base is larger than the inner diameter of the elastic rubber plug 101. The L-shaped groove extends axially along the sleeve 201 and then bends circumferentially. The cylindrical protrusion can slide and lock along the L-shaped groove. The scale starting point of the graduated rod 202 is the end face of the sleeve 201, which is used to indicate the depth of the rubber expansion plug 1 inserted into the tie bolt hole. The serrated barbs 3011 are evenly distributed circumferentially along the elastic rubber base 301, and the barb direction is inclined towards the central axis of the elastic rubber base 301. A sealing ring is provided at the connection between the guide tube 302 and the elastic rubber base 301. The feed port 303 and the exhaust port 304 are both connected to the internal cavity of the guide tube 302.

[0020] like Figure 6 , Figure 7 As shown, the T-shaped wrench 2 is used to install and tighten the rubber expansion plug 1. During operation, the sleeve 201 is placed on the nut 103, so that the cylindrical protrusion is aligned with the axial entrance of the L-shaped groove on the inner wall of the sleeve. Then, it is pushed forward and slightly rotated so that the protrusion is engaged in the circumferential part of the L-shaped groove, thereby achieving locking. By rotating the horizontal handle 203, the nut 103 can be rotated. The construction personnel can accurately push the rubber expansion plug 1 to the corresponding depth on the outer surface of the wall by observing the scale on the graduated rod 202.

[0021] like Figure 8 , Figure 9 , Figure 10 As shown, the rubber base 3 with the guide tube is used to seal the opening on the inner side of the wall and serve as a grouting channel. The outer diameter of the elastic rubber base 301 is slightly larger than the bolt hole, and the serrated barbs on the surface ensure that it is not easy to loosen after being inserted. During installation, the vent 304 should face upward. During grouting, the grout is pumped in from the inlet 303, and the air in the hole is discharged from the higher vent 304. When the grout is full and overflows from the vent, it indicates that the filling is dense. At this time, grouting can be stopped and the surface can be smoothed.

[0022] The working principle and usage process of this utility model are as follows: When in use, use a dust removal brush to remove debris from the hole to ensure a sealing effect. The rubber expansion plug 1 is inserted into the hole from the outside of the wall. The rubber expansion plug 1 consists of an elastic rubber plug 101, a compression device 102 and a nut 103. The compression device 102 includes a base, a screw, a first washer and a second washer. The screw passes through the first washer, the elastic rubber plug 101 and the second washer and is connected to the nut 103. The outer periphery of the nut 103 is provided with a cylindrical protrusion. During operation, a T-shaped wrench 2 is used for installation. The T-shaped wrench 2 includes a socket 201, a graduated rod 202, and a horizontal handle 203. The inner wall of the socket 201 is provided with an L-shaped groove that matches the cylindrical protrusion of the nut 103. By fitting the socket 201 onto the nut 103, the protrusion is pushed in along the axial entrance of the L-shaped groove and rotated to lock, achieving a quick connection. When the horizontal handle 203 is rotated, the nut 103 is tightened, which in turn pulls the screw to make the first washer and the second washer move towards each other, squeezing the elastic rubber plug 101 to make it expand radially, with a diameter slightly larger than the bolt hole, forming initial friction and the first physical seal; The starting point of the scale on the graduated rod 202 is the end face of the sleeve 201, which is used to precisely control the insertion depth of the rubber expansion plug 1 to ensure that it is flush with the outer surface of the wall. After expansion is completed, the wrench is turned back to unlock the sleeve 201 from the nut 103 and the T-wrench 2 is pulled out. Next, the rubber base 3 with the guide tube is installed on the inner side of the wall. This component consists of an elastic rubber base 301 and a guide tube 302. The outer diameter of the elastic rubber base 301 is 3 mm larger than the bolt hole. The outer surface is provided with multiple serrated barbs. When installing, the vent 304 faces upward and is hammered into the channel to make the barbs clamp the hole wall to prevent it from falling off. The guide pipe 302 is equipped with an inlet 303 and an outlet 304, with the outlet 304 located above the inlet 303. During grouting, water-based epoxy micro-expansion sealant is injected through the inlet 303. The sealant fills the space inside the hole, and air is discharged through the outlet 304. Grouting is stopped when sealant overflows from the outlet, and the surface is smoothed. After the sealant cures, it expands in volume, actively squeezing the micro-cracks in the hole wall to form a second chemical seal. The entire device actively compensates for shrinkage through the dual effects of mechanical expansion and chemical micro-expansion, thereby improving its impermeability. Construction does not require external scaffolding or suspended platforms, and external scaffolding can be removed in advance, reducing rental costs and safety hazards, improving construction efficiency and quality, and achieving green, efficient, and refined construction.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rubber expansion plug installation device for shear wall tie bolts, characterized in that, include: The rubber expansion plug (1) includes an elastic rubber plug (101), a compression device (102), and a nut (103). The compression device (102) is disposed inside the elastic rubber plug (101) and consists of a base, a screw, a first washer, and a second washer. The screw passes through the first washer, the elastic rubber plug (101), and the second washer in sequence, and is threadedly connected to the nut (103). The outer circumferential surface of the nut (103) is provided with a cylindrical protrusion. The T-shaped wrench (2) includes a graduated rod (202), a sleeve (201) and a horizontal handle (203). The sleeve (201) is fixed to one end of the graduated rod (202), and its inner wall is provided with an L-shaped groove that matches the cylindrical protrusion. The horizontal handle (203) is vertically fixed to the other end of the graduated rod (202). The rubber base (3) with a guide tube includes an elastic rubber base (301) and a guide tube (302) integrally formed on one side thereon. The outer diameter of the elastic rubber base (301) is larger than the diameter of the tie bolt hole, and the outer surface is provided with multiple serrated barbs. The guide tube (302) is provided with a feed inlet (303) and an exhaust port (304), and the exhaust port (304) is located above the feed inlet (303).

2. The shear wall tie bolt rubber expansion plug installation device according to claim 1, characterized in that, The base of the extrusion device (102) is fixedly connected to one end of the screw, and the outer diameter of the base is larger than the inner diameter of the elastic rubber plug (101).

3. The shear wall tie bolt rubber expansion plug installation device according to claim 1, characterized in that, The L-shaped groove extends axially along the sleeve (201) and then bends circumferentially, and the cylindrical protrusion can slide and lock along the L-shaped groove.

4. The shear wall tie bolt rubber expansion plug installation device according to claim 1, characterized in that, The starting point of the scale on the graduated rod (202) is the end face of the sleeve (201), which is used to indicate the depth to which the rubber expansion plug (1) extends into the tie bolt hole.

5. The shear wall tie bolt rubber expansion plug installation device according to claim 1, characterized in that, The serrated barbs (3011) are evenly distributed around the circumference of the elastic rubber base (301), and the barbs are inclined toward the central axis of the elastic rubber base (301).

6. The shear wall tie bolt rubber expansion plug installation device according to claim 1, characterized in that, A sealing ring is provided at the connection between the guide tube (302) and the elastic rubber base (301), and the feed port (303) and the exhaust port (304) are both connected to the internal cavity of the guide tube (302).

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