Special metal anchor bolt for reinforcing outer wall

Abstract

The utility model relates to the technical field of connecting pieces, and discloses a special metal anchor bolt for outer wall reinforcement, which comprises an inner bolt, an expansion pipe fixing bolt and a sheath, side openings are arranged on the front and rear surfaces of the bottom of an expansion pipe, a plurality of abutting blocks are arranged on the surface of the expansion pipe between the side openings, and an abutting sheet is integrally fixed on the top of the inner bolt. A screw groove is formed in the middle of the surface of the abutting piece and extends into the inner bolt, a pressing piece is connected to the upper portion of the protective sleeve, the protective sleeve is vertically arranged above the abutting piece, the fixing bolt vertically penetrates through the pressing piece and the protective sleeve, and the bottom of the fixing bolt is screwed into the screw groove. According to the technical scheme, the sheath penetrates through the fixing bolt and is screwed into the screw groove of the inner bolt, the heat preservation plate is pressed and fixed through the pressing piece, the inner bolt is not directly used for locking the heat preservation plate, the fixing bolt does not need to apply too large pressure to the pressing piece to fix the heat preservation plate, damage to the surface and the penetrating position of the heat preservation plate is avoided, and the service life of the heat preservation plate is prolonged. And the fixing bolts can be conveniently detached to maintain and replace the heat insulation plate.

Description

Technical Field

[0001] The utility model relates to the technical field of connecting pieces, in particular to a special metal anchor bolt for external wall reinforcement. Background Art

[0002] The existing exterior wall insulation structure generally uses adhesives to bond insulation materials such as polystyrene plastic boards to the exterior walls, covers the surface with anti-cracking mortar, and decorates the exterior wall landscape bricks or exterior wall paint. However, if only adhesives are used to fix the exterior wall insulation materials, they are prone to falling off over time, which is a great test for the later safety and maintenance costs. Therefore, the existing technology mostly uses anchors to fix the exterior wall insulation boards. Anchor bolts refer to the general term for all rear anchoring components.

[0003] The prior art usually uses an expansion tube inserted into an opening in the exterior wall, and then a bolt is passed through the insulation board and screwed into the expansion tube so that the pressing piece contacts the surface of the insulation board to fix the insulation board. However, in order to firmly fix the expansion tube to the bolt, the bolt needs to be tightened into the expansion tube, which will cause the bolt to have a greater effect on the pressing piece and press it against the surface of the insulation board. It is also inconvenient to dismantle the structure for maintenance and replacement of the insulation board. Therefore, we propose a special metal anchor bolt for exterior wall reinforcement. Utility Model Content

[0004] The purpose of the utility model is to provide a special metal anchor bolt for exterior wall reinforcement. The sheath is passed through the fixing bolt and screwed into the screw groove of the inner bolt, and the insulation board is fixed by using a pressing plate. The insulation board is not directly locked by using the inner bolt, so that the fixing bolt does not need to apply excessive pressure to the pressing plate to fix the insulation board, thereby avoiding damage to the surface and penetration of the insulation board, and making it convenient to remove the fixing bolt for maintenance and replacement of the insulation board, thereby solving the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a special metal anchor bolt for exterior wall reinforcement, comprising an inner bolt, an expansion tube, a fixing bolt and a sleeve, the lower part of the inner bolt is inserted into the interior of the expansion tube, the front and rear surfaces of the bottom of the expansion tube are provided with side openings, a plurality of retaining blocks are arranged on the surface of the expansion tube between the side openings, and a retaining plate is integrally fixed to the top of the inner bolt; a screw groove is arranged in the middle position of the surface of the retaining plate, the screw groove extends to the interior of the inner bolt, a pressing plate is connected to the top of the sleeve, the sleeve is vertically placed above the retaining plate, the fixing bolt vertically penetrates the pressing plate and the sleeve, and the bottom of the fixing bolt is screwed into the screw groove.

[0006] By adopting the above technical solution, the inner bolt is first screwed into the opening on the outer wall surface in cooperation with the expansion tube and locked, and then the insulation board is made close to the outer wall surface, the sheath passes through the perforation of the insulation board and is aligned with the inner bolt, and then the fixing bolt is passed through to press the pressure plate of the arc sleeve against the surface of the insulation board to fix the insulation board.

[0007] Optionally, a plurality of arc plates are provided on the bottom surface of the pressing sheet, and the height of the arc plates is equal to the thickness of the pressing sheet.

[0008] By adopting the above technical solution, when the pressing sheet is pressed against the surface of the insulation board, the arc plate is pressed against the outer surface of the insulation board, which can prevent the sleeve and the pressing plate from rotating and causing the fixing bolts to loosen.

[0009] Optionally, a hole is opened in the middle of the surface of the pressing sheet, and the hole is connected to the inside of the sheath.

[0010] By adopting the above technical solution, the fixing bolt passes through the pressing sheet and the sheath through the through opening.

[0011] Optionally, a rubber pad is fitted and fixed on the surface of the pressing sheet of the perforated outer ring, and the nut of the fixing bolt is in contact with the surface of the rubber pad.

[0012] By adopting the above technical solution, when the nut of the fixing bolt is pressed against the surface of the rubber pad, it also has the function of preventing the fixing bolt from rotating and slipping.

[0013] Optionally, a hexagonal groove is provided in the middle of the surface of the retaining piece, and the hexagonal groove extends to the upper interior of the inner bolt.

[0014] By adopting the above technical solution, the inner bolt can be driven to rotate and tightened by using the hexagonal wrench in combination with the hexagonal slot.

[0015] Optionally, the length of the sheath is smaller than the thickness of the exterior wall insulation board, and the sheath and the pressing sheet are connected to form an integral structure.

[0016] By adopting the above technical solution, it is avoided that the arc plate is too high to make the pressing sheet contact with the surface of the insulation board.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0018] 1. The technical solution of the present application is to first make the inner bolt cooperate with its expansion tube, insert it into the opening on the surface of the outer wall separately and lock it, then close the insulation board to make the sheath pass through its through-hole, penetrate the fixing bolt and screw it into the screw groove of the inner bolt, and use the pressing plate to press and fix the insulation board, instead of directly using the inner bolt to lock the insulation board, so that the fixing bolt does not need to apply excessive pressure to the pressing plate to fix the insulation board, thus avoiding damage to the surface and penetration of the insulation board, and making it convenient to remove the fixing bolt for maintenance and replacement of the insulation board.

[0019] 2. The technical solution of the present application provides an arc plate on the bottom surface of the pressing sheet to press against the surface of the insulation board to prevent the sheath from rotating. The nut portion of the fixing bolt contacts the surface of the rubber pad on the surface of the pressing sheet, making it difficult for the bolt to rotate and loosen. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of the special metal anchor bolt for exterior wall reinforcement of the utility model;

[0022] Figure 2 This is a schematic diagram of the bottom structure of the pressing sheet of the special metal anchor bolt for exterior wall reinforcement of the utility model;

[0023] Figure 3 This is a schematic diagram of the upper surface structure of the pressing plate of the special metal anchor bolt for exterior wall reinforcement of the utility model;

[0024] Figure 4 The utility model is a schematic diagram of the upper surface structure of the abutment plate of the special metal anchor bolt for exterior wall reinforcement.

[0025] In the figure: 1, inner bolt; 11, stopper; 111, hexagonal groove; 112, screw groove; 2, expansion tube; 21, side opening; 22, stopper; 3, fixing bolt; 4, sheath; 41, pressing piece; 411, arc plate; 412, through-opening; 413, rubber pad. DETAILED DESCRIPTION

[0026] See also Figure 1-4 The utility model provides a technical solution: a special metal anchor bolt for exterior wall reinforcement, comprising an inner bolt 1, an expansion tube 2, a fixing bolt 3 and a sheath 4, wherein the lower part of the inner bolt 1 is inserted into the interior of the expansion tube 2. When in use, the expansion tube 2 is first inserted into the opening on the surface of the exterior wall, and the front and rear surfaces of the bottom of the expansion tube 2 are provided with side openings 21. When the inner bolt 1 is screwed into the interior of the expansion tube 2, the bottom of the expansion tube 2 will be stretched outward at the position of the side openings 21, and a plurality of retaining blocks 22 are provided on the surface of the expansion tube 2 between the side openings 21, and the retaining blocks 22 will press against the inner wall surface of the opening, thereby locking the expansion tube 2 and the inner bolt 1.

[0027] A retaining piece 11 is integrally fixed to the top of the inner bolt 1, and a hexagonal groove 111 is provided in the middle of the surface of the retaining piece 11. The hexagonal groove 111 extends to the upper interior of the inner bolt 1. An inner hexagonal wrench can be inserted into the hexagonal groove 111, and then the retaining piece 11 and the inner bolt 1 can be driven to rotate through the hexagonal groove 111 until the inner bolt 1 is tightened and the retaining piece 11 contacts the surface of the outer wall.

[0028] After the inner bolt 1 is tightened, the insulation board is placed in contact with the outer wall surface, and the perforations on the surface of the insulation board are aligned with the inner bolt 1. Then the sheath 4 passes through the perforations of the insulation board and is aligned with the inner bolt 1. A pressing sheet 41 is integrally connected to the top of the sheath 4. A plurality of arc plates 411 are provided on the bottom surface of the pressing sheet 41. The height of the arc plates 411 is equal to the thickness of the pressing sheet 41, so that the pressing sheet 41 and the arc plates are in contact with the outer surface of the insulation board.

[0029] A screw groove 112 is provided in the middle of the surface of the retaining piece 11, and the screw groove 112 extends to the inside of the inner bolt 1. A through hole 412 is provided in the middle of the surface of the pressing piece 41, and the through hole 412 is communicated with the inside of the sheath 4, so that the fixing bolt 3 passes through the pressing piece 41 through the through hole 412, and then passes through the sheath 4. The fixing bolt 3 is adapted to the screw groove 112, and then the fixing bolt 3 is screwed into the screw groove 112 with the help of a wrench, thereby pressing the pressing piece 41 so that the arc plate 411 partially contacts the surface of the insulation board, and the pressing piece 41 contacts the surface of the insulation board, thereby realizing the installation and fixation of the insulation board.

[0030] When the length of the sleeve 4 is greater than the thickness of the insulation board, the arc sleeve will contact the surface of the retaining plate 11, and the fixing bolts 3 cannot be tightened, so that the pressing plate 41 is pressed against the outer surface of the insulation board. In order to avoid this problem, the length of the arc sleeve needs to be smaller than the thickness of the insulation board. This can ensure that after the fixing bolts 3 are tightened, the sleeve 4 is not released from the retaining plate 11, and thus the pressing plate 41 can be pressed against the outer surface of the insulation board to lock the insulation board.

[0031] A rubber pad 413 is fixed to the surface of the pressing plate 41 of the outer circle of the through-hole 412. After the fixing bolt 3 is tightened and locked, its nut abuts against the surface of the rubber pad 413, making it difficult for the fixing bolt 3 and the pressing plate 41 to loosen and rotate. The arc plate 411 abuts against the outer surface of the insulation board, and the pressing plate 41 and the through-holes of the insulation board are also difficult to rotate, so that the fixing bolt 3 will not rotate and loosen.

[0032] When in use, first make a hole on the surface of the outer wall, then insert the expansion tube 2 into the hole, and use an inner hexagonal wrench to insert into the hexagonal slot 111 to screw the inner bolt 1 into the expansion tube 2, so that the expansion tube 2 is stretched open from the side opening 21 by the inner bolt 1, and the stop block 22 is pressed against the inner surface of the hole, the expansion tube 2 and the inner bolt 1 are locked on the surface of the outer wall, and the stop piece 11 is pressed against the surface of the outer wall, the outer wall insulation board is pressed against the surface of the outer wall, and then the sheath 4 passes through the insulation board through the perforation on the surface of the insulation board, and the sheath 4 is pressed against the hexagonal slot 111 on the surface of the bottom plate. The angle groove 111 and the screw groove 112 are aligned, and then the fixing bolt 3 is passed through the through-opening 412 to penetrate the pressing plate 41 and the sheath 4, and then the end thereof is screwed into the screw groove 112, and the fixing bolt 3 is rotated and tightened with a wrench so that its nut part contacts the surface of the rubber pad 413, so that the pressing plate 41 and the arc plate 411 at the bottom thereof are pressed against the surface of the external wall insulation board, thereby achieving the installation and fixation of the insulation board. When the insulation board is subsequently maintained or replaced, the fixing bolt 3 can be unscrewed separately to release the lock on the external wall insulation board, thereby facilitating its removal.

Claims

1. A metal anchor bolt for external wall reinforcement, comprising an inner bolt (1), an expansion tube (2), a fixing bolt (3) and a sheath (4), characterized in that: The lower part of the inner bolt (1) is inserted into the interior of the expansion tube (2), the front and rear surfaces of the bottom of the expansion tube (2) are both provided with side openings (21), a plurality of stop blocks (22) are provided on the surface of the expansion tube (2) between the side openings (21), and a stop sheet (11) is integrally fixed to the top of the inner bolt (1); A screw groove (112) is provided in the middle of the surface of the retaining plate (11), and the screw groove (112) extends to the inside of the inner bolt (1). A pressing plate (41) is connected above the sleeve (4), and the sleeve (4) is vertically arranged above the retaining plate (11). The fixing bolt (3) vertically penetrates the pressing plate (41) and the sleeve (4), and the bottom of the fixing bolt (3) is screwed into the screw groove (112).

2. The metal anchor bolt for exterior wall reinforcement according to claim 1, characterized in that: The bottom surface of the pressing sheet (41) is provided with a plurality of arc plates (411), and the height of the arc plates (411) is equal to the thickness of the pressing sheet (41).

3. The metal anchor bolt for exterior wall reinforcement according to claim 1, characterized in that: A through hole (412) is provided in the middle of the surface of the pressing sheet (41), and the through hole (412) is communicated with the interior of the sheath (4).

4. The metal anchor bolt for exterior wall reinforcement according to claim 3, characterized in that: A rubber pad (413) is fixedly attached to the surface of the pressing sheet (41) of the outer ring of the through opening (412), and the nut of the fixing bolt (3) contacts the surface of the rubber pad (413).

5. The metal anchor bolt for exterior wall reinforcement according to claim 1, characterized in that: A hexagonal groove (111) is provided in the middle of the surface of the stopper (11), and the hexagonal groove (111) extends to the upper interior of the inner bolt (1).

6. The metal anchor bolt for exterior wall reinforcement according to claim 1, characterized in that: The length of the sheath (4) is less than the thickness of the external wall insulation board, and the sheath (4) and the pressing sheet (41) are connected to form an integral structure.

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