Building outer wall embedded part fixing structure facilitating later maintenance

Abstract

The utility model provides the building outer wall embedded part fixed structure convenient to post maintenance relates to the technical field of building embedded part, including the holding sleeve, the inside rotation of holding sleeve is provided with the expansion bolt, the inner periphery of holding sleeve is connected with four V shape limiters of surrounding distribution, the every adjacent two V shape limiters all interval form the sliding slot, the central position between four V shape limiters surrounds and forms the bolt hole, and the expansion bolt is equipped with the rotation of bolt hole penetration, the sliding slot is slidably installed with the top tight fixed strip, and the top tight fixed strip penetrates the peripheral wall of holding sleeve, is used for the expansion tight fixing of the whole implementation of fixed structure, two trapezoidal grooves are set up in the top tight fixed strip in the form of interval from top to bottom, and the expansion bolt is integrally formed with two sets of driving wedge blocks which are interval from top to bottom distribution. Compared with prior art of non detachable and using disposable installation design, the utility model can implement the disassembly replacement of fixed structure after damage failure, and the use effect is better.

Description

Technical Field

[0001] This utility model relates to the field of building embedded parts technology, and in particular to a building exterior wall embedded parts fixing structure that facilitates later maintenance. Background Technology

[0002] With the diversification of building exterior wall functions and the increasing demand for subsequent renovation and maintenance, the drawbacks of existing pre-embedded fixing structures—such as difficulty in adjustment after installation, structural damage during maintenance, and low disassembly and assembly efficiency—are becoming increasingly prominent. Therefore, there is an urgent need for a fixing structure that is simple in structure, removable and replaceable, and does not damage the exterior wall during maintenance, in order to reduce maintenance costs, improve construction safety, and meet the needs of long-term use and flexible maintenance in building projects.

[0003] Most existing expansion-type fixing structures drive the expansion assembly (such as expansion bolts) through threaded push to expand the expansion component (such as the expansion tube with a cut-sealed peripheral wall) and implement expansion and fixing installation. Because the expansion component of this type of fixing structure is irreversible after being expanded and deformed, it cannot be disassembled after installation. It is a one-time installation design. This means that when the fixing structure corrodes, breaks, or loosens and fails after long-term use, it cannot be removed for maintenance and replacement, resulting in poor performance. Utility Model Content

[0004] In view of this, the present invention provides a building exterior wall embedded fixing structure that is easy to maintain in the later stage, so as to solve the problem that the existing fixing structure cannot be removed for maintenance and replacement when it is corroded, broken or loosened after long-term use, resulting in poor performance.

[0005] The technical solution proposed by this utility model is as follows: a building exterior wall embedded component fixing structure that facilitates later maintenance, specifically including a retaining sleeve, wherein an expansion bolt is rotatably installed inside the retaining sleeve; four V-shaped limiting members are fixedly connected to the inner circumference of the retaining sleeve, and a sliding groove is formed between each pair of adjacent V-shaped limiting members; a bolt through hole is formed around the center position of the four V-shaped limiting members, and the expansion bolt is rotatably assembled through the bolt through hole; a top-tightening fixing strip is slidably installed in the sliding groove, and the top-tightening fixing strip penetrates the peripheral wall of the retaining sleeve for overall expansion and fixing of the fixing structure; two trapezoidal grooves are formed on the top-tightening fixing strip in an upper and lower interval; two rings of driving wedges are integrally formed on the expansion bolt, each ring of driving wedges includes four driving wedges, the driving wedges are located in the trapezoidal grooves and the sliding groove, and the inclined surface of the driving wedges abuts against the inclined side of the trapezoidal groove; the expansion bolt penetrates the end plate of the retaining sleeve, and a locking nut is screwed onto the threaded part of the expansion bolt protruding from the retaining sleeve.

[0006] Furthermore, four strip-shaped through grooves are provided around the peripheral wall of the retaining sleeve, and the tightening fixing strip is slidably assembled with the strip-shaped through grooves. The outer side of the strip-shaped through grooves is provided with teeth to increase friction.

[0007] Furthermore, the end cap of the retaining sleeve has a through hole, the inner wall of which is smooth and maintains a gap with the tightening bolt.

[0008] Furthermore, the retaining sleeve is inserted into a pre-embedded pipe sleeve pre-installed on the outer wall, and the inner wall of the pre-embedded pipe sleeve is evenly distributed with teeth to increase friction. The top-tightening fixing strip is in contact with the inner wall of the pre-embedded pipe sleeve.

[0009] Furthermore, the locking nut is used to lock and fix the metal building component to the end plate of the retaining sleeve.

[0010] Furthermore, the retaining sleeve is secured with elastic bands around its outer periphery.

[0011] The building exterior wall embedded part fixing structure provided by this utility model, which facilitates later maintenance, has the following beneficial effects: When the top-tightening fixing strip is in the top-pushing and tightening state, its body is pushed and slid outwards towards the outside of the retaining sleeve, thus creating a gap between the inclined side of its upper trapezoidal groove and the drive wedge. At this time, if the locking nut is turned, the tightening bolt and the drive wedge can be pushed and slid towards the inside of the retaining sleeve. During this process, the drive wedge separates from the inclined side of the trapezoidal groove, and the above gap remains. Based on this, when the drive wedge separates from the trapezoidal groove, the tightening bolt releases the top-pushing and retaining effect on the top-tightening fixing strip, and eliminates the tightening and fixing effect it exerts on the entire fixing structure through the top-tightening fixing strip. The fixing structure that has been corroded, damaged, loosened, or failed after long-term use can be extracted and disassembled from the pre-embedded pipe sleeve for replacement. Compared with the existing technology that is non-removable and adopts a one-time installation design, this technology can disassemble and replace the damaged and failed fixing structure, resulting in better performance. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0013] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0014] In the attached diagram: Figure 1 A schematic diagram showing the installation and use status of this utility model is provided. Figure 2 A schematic diagram showing the disassembled state of the retaining sleeve in this utility model is shown; Figure 3A schematic diagram showing the disassembly state of the top fixing strip and the expansion bolt in this utility model is shown; Figure 4 This diagram shows the disassembly state of the clamping and fixing strip in the semi-sectioned state of the retaining sleeve in this utility model; Figure 5 This invention provides a schematic diagram of the structure in the partially sectional state of the retaining sleeve. Figure 6 This invention shows a cross-sectional internal structure diagram of the retaining sleeve. Figure 7 A schematic diagram showing the setting position of the V-shaped limiting member in this utility model is shown.

[0015] List of reference numerals in the attached diagram: 1. Exterior wall structure; 101. Embedded pipe sleeve; 2. Metal building components; 3. Expansion bolt; 301. Drive wedge; 4. Tighten the nut; 5. Retaining sleeve; 501. V-shaped limiting element; 502. Strip through groove; 503. Shaft hole; 504. Slide groove; 505. Bolt through hole; 6. Tightening and fixing strip; 601. Trapezoidal groove; 7. Rubber band. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this 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, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] Please refer to Figures 1 to 7 Example 1: This embodiment proposes a building exterior wall embedded part fixing structure that facilitates later maintenance, including a retaining sleeve 5, with an expansion bolt 3 rotatably installed inside the retaining sleeve 5; four V-shaped limiting members 501 are fixedly connected to the inner circumference of the retaining sleeve 5, and a sliding groove 504 is formed between each pair of adjacent V-shaped limiting members 501; a bolt through hole 505 is formed around the center position of the four V-shaped limiting members 501, and the expansion bolt 3 is rotatably assembled through the bolt through hole 505; a tightening fixing strip 6 is slidably installed in the sliding groove 504, and the tightening fixing strip 6 penetrates the peripheral wall of the retaining sleeve 5. It is used to tighten and fix the entire fixed structure; the top fixing strip 6 has two trapezoidal grooves 601 with an upper and lower interval; the tightening bolt 3 has two rings of driving wedges 301 with an upper and lower interval, each ring of driving wedges 301 includes four driving wedges 301; the driving wedges 301 are located in the trapezoidal groove 601 and the sliding groove 504; the inclined surface of the driving wedge 301 abuts against the inclined side of the trapezoidal groove 601; the tightening bolt 3 passes through the end plate of the retaining sleeve 5; the part of the tightening bolt 3 protruding from the retaining sleeve 5 is threaded with a locking nut 4.

[0018] Preferably, four strip-shaped through grooves 502 are provided around the peripheral wall of the retaining sleeve 5, and the tightening fixing strip 6 is slidably assembled with the strip-shaped through grooves 502. The outer side of the strip-shaped through grooves 502 is provided with teeth to increase friction.

[0019] Preferably, the end cap of the retaining sleeve 5 has a through hole 503, the inner wall of the hole 503 is smooth and there is a gap between it and the expansion bolt 3.

[0020] Implementation 2: This embodiment is based on Implementation 1, but with the following additions: The retaining sleeve 5 is inserted into the pre-embedded pipe sleeve 101 pre-set on the outer wall 1. The inner wall of the pre-embedded pipe sleeve 101 is evenly distributed with teeth to increase friction. The tightening and fixing strip 6 presses against the inner wall of the pre-embedded pipe sleeve 101. The teeth can increase the frictional fixing force between the tightening and fixing strip 6 and the pre-embedded pipe sleeve 101, and improve the overall fastening stability of the fixing structure inside the pre-embedded pipe sleeve 101.

[0021] Preferably, the locking nut 4 is used to lock and fix the metal building component 2 to the end plate of the retaining sleeve 5.

[0022] Preferably, the retaining sleeve 5 is equipped with a rubber band 7 on its outer periphery. The rubber band 7 is used to bind and limit the tightening and fixing strip 6 in the retaining sleeve 5, so as to prevent the tightening and fixing strip 6 from falling off and being lost from the retaining sleeve 5 when the fixing structure is picked up or transferred, which would cause the fixing structure to fail due to missing parts.

[0023] The following provides a detailed explanation of the specific details, implementation steps, functions and interrelationships of the features in the above embodiments, and the roles these features play in implementing this technical solution: The forward-rotating locking nut 4 can push the protruding expansion bolt 3 towards the outside of the retaining sleeve 5. Through the inclined guiding effect of the trapezoidal groove 601 and the driving wedge 301, when the expansion bolt 3 is driven to slide outward of the retaining sleeve 5, it can push and drive the tightening fixing strip 6 to slide outward of the retaining sleeve 5 and press against the inner wall of the pre-embedded pipe sleeve 101 to tighten and fix the fixed structure. The part of the V-shaped limiting member 501 located on both sides of the sliding groove 504 can torsion limit the driving wedge 301 and the expansion bolt 3, preventing the expansion bolt 3 from rotating with the locking nut 4, causing the thread twisting and pushing effect of the locking nut 4 on the expansion bolt 3 to fail. When the top-tightening fixing strip 6 is in the top-pushing and tightening state, its body is pushed and slid outwards towards the retaining sleeve 5, thereby creating a gap between the inclined side of its upper trapezoidal groove 601 and the driving wedge 301. At this time, if the locking nut 4 is rotated, the tightening bolt 3 and the driving wedge 301 can be pushed and slid towards the inside of the retaining sleeve 5. During this process, the driving wedge 301 separates from the inclined side of the trapezoidal groove 601, and the above gap remains. Based on this, when the driving wedge 301 separates from the trapezoidal groove 601, the tightening bolt 3 releases the top-pushing and retaining effect on the top-tightening fixing strip 6 and eliminates the tightening and fixing effect applied to the entire fixing structure through the top-tightening fixing strip 6. The fixing structure that has been corroded, damaged, loosened, or failed after long-term use can be extracted and disassembled from the pre-embedded sleeve 101 for replacement. Compared with the existing technology that is non-removable and adopts a one-time installation design, this technology can disassemble and replace the fixed structure after damage and failure, resulting in better performance.

[0024] The following points should be noted in this article: 1. The accompanying drawings of this utility model embodiment only involve the structure involved in this utility model embodiment; other structures can refer to general designs.

[0025] 2. Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0026] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A building exterior wall embedded component fixing structure that facilitates later maintenance, including a retaining sleeve (5), wherein an expansion bolt (3) is rotatably provided inside the retaining sleeve (5); Its features are, The inner circumference of the retaining sleeve (5) is fixedly connected with four V-shaped limiting members (501) arranged around it. A sliding groove (504) is formed between each pair of adjacent V-shaped limiting members (501). A bolt through hole (505) is formed around the center position of the four V-shaped limiting members (501). The expansion bolt (3) is rotatably assembled with the bolt through hole (505). A tightening fixing strip (6) is slidably installed in the sliding groove (504). The tightening fixing strip (6) penetrates the peripheral wall of the retaining sleeve (5) and is used to tighten and fix the entire fixing structure. The tightening fixing strip (6) is decorated with... Two trapezoidal grooves (601) are provided in an alternating vertical manner. Two rings of drive wedges (301) are integrally formed on the expansion bolt (3) and are distributed in an alternating vertical manner. Each ring of drive wedges (301) includes four drive wedges (301). The drive wedges (301) are located in the trapezoidal groove (601) and the slide groove (504). The inclined surface of the drive wedge (301) abuts against the inclined side of the trapezoidal groove (601). The expansion bolt (3) passes through the end plate of the retaining sleeve (5). The part of the expansion bolt (3) protruding from the retaining sleeve (5) is threaded with a locking nut (4).

2. The pre-embedded component fixing structure for building exterior walls that facilitates later maintenance, as described in claim 1, is characterized in that... The retaining sleeve (5) has four strip-shaped through grooves (502) circumferentially formed on its peripheral wall. The tightening fixing strip (6) is slidably assembled with the strip-shaped through grooves (502). The outer side of the strip-shaped through grooves (502) has teeth for increasing friction.

3. The pre-embedded component fixing structure for building exterior walls that facilitates later maintenance, as described in claim 1, is characterized in that... The retaining sleeve (5) has a through hole (503) on the end plate. The inner wall of the hole (503) is smooth and there is a gap between it and the expansion bolt (3).

4. The pre-embedded component fixing structure for building exterior walls that facilitates later maintenance, as described in claim 1, is characterized in that... The retaining sleeve (5) is inserted into the pre-embedded pipe sleeve (101) pre-set on the outer wall (1). The inner wall of the pre-embedded pipe sleeve (101) is evenly distributed with teeth for increasing friction. The top-tightening fixing strip (6) is in contact with the inner wall of the pre-embedded pipe sleeve (101) under pressure.

5. The pre-embedded component fixing structure for building exterior walls that facilitates later maintenance, as described in claim 1, is characterized in that... The locking nut (4) is used to lock and fix the metal building component (2) to the end plate of the retaining sleeve (5).

6. The pre-embedded component fixing structure for building exterior walls that facilitates later maintenance, as described in claim 1, is characterized in that... The retaining sleeve (5) is wrapped with rubber bands (7) around its outer periphery.

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