A single monolithic multi-purpose wall anchor and method of installation thereof

Abstract

The application discloses a single-purpose wall anchor bolt, which comprises a hollow tubular body and a plurality of root strips, the root strips are strip-shaped, the front end of the hollow tubular body is connected with the rear end of the root strips, the root strips are arranged along the circumference of the front end of the hollow tubular body, and the rear end of the hollow tubular body is provided with external threads and / or internal threads. The single-purpose wall anchor bolt can realize the suspension function through the external threads or the internal threads provided at the rear end of the hollow tubular body, is suitable for the installation of wall hanging parts, and has the advantages of simple structure and firmness. In addition, the single-purpose wall anchor bolt can realize the guiding expansion function through the inclined front end surface of the root strips, and has the advantages of low cost and convenient installation. The application also discloses a mounting method of the single-purpose wall anchor bolt.

Description

Technical Field

[0001] The present invention relates to the field of construction, and in particular to a single multi-purpose wall anchor bolt. Background Art

[0002] Exterior wall substrates can be broadly divided into two categories: 1) concrete shear walls; 2) masonry walls such as fired bricks, aerated bricks, and porous hollow bricks. Due to differences in strength, density, and structural construction, the performance requirements for anchor bolts vary significantly when anchoring these walls. Currently, traditional anchor bolts fall into two main categories: 1) physical and mechanical expansion anchors; 2) chemical anchors.

[0003] 1. The physical and mechanical expansion anchor is a combination of a screw and a thin iron hollow cylinder. After the anchor is implanted in the wall hole and hammered into place, the nut is screwed to squeeze and push the thin iron hollow cylinder to the bottom of the hole, and the screw is pulled outward at the same time. The three accessories work together to produce a physical and mechanical tensile effect.

[0004] The disadvantages of this anchor bolt are: it is only suitable for high-strength structural matrices (such as concrete shear walls), and the anchoring effect is very poor on structural matrices with low density, low strength, high brittleness, and multiple holes. Moreover, during installation, the anchor bolt screw is pulled outward, the effective installation depth continues to decrease, and the reliability continues to decrease, resulting in uncontrollable and quantifiable safety and reliability. Therefore, it cannot be used in large quantities. The use of physical and mechanical expansion anchor bolts is prohibited in all levels of curtain wall specifications and standards.

[0005] 2. A chemical anchor bolt consists of a single screw with external threads and a thin glass bottle of chemical glue. After drilling the hole, first brush away any dust with a brush and then blow it clean with an air blower to ensure the glue's adhesion. Push the anchor bolt into the hole, breaking the thin glass bottle of chemical glue. The chemical anchor relies on the adhesive properties of the chemical glue to achieve its tensile strength.

[0006] The disadvantages of this anchor bolt are: the strength and structural construction requirements of the base are relatively high during installation, especially on the structural base with low density, low strength, high brittleness and multiple holes, the effect is very poor or even fails, and the cleanliness, dryness, depth and diameter accuracy of the wall hole are very high. Since the chemical glue in the canned thin glass bottle is a fixed dose, and the size and depth of the wall hole in actual construction will vary greatly, the fixed dose chemical glue in the canned thin glass bottle can only partially bond the anchor bolt to the base, and the effective force-bearing length and area of ​​the anchor bolt and the wall vary greatly, making it difficult to control and quantify safety and reliability, especially on masonry walls such as porous hollow bricks, the anchor bolt anchoring function fails. Summary of the Invention

[0007] The present invention aims to provide a single, multi-purpose wall anchor bolt, utilizing a single, hollow tubular anchor bolt. One end of the anchor bolt is provided with a solid-wall tube with external threads, while the middle portion is a solid-wall tube or a solid-wall tube with external threads. The other end is provided with a plurality of bifurcated strips, forming a circular root bar. The tail of the root bar is provided with a chisel tip that tilts from the inside outward. The present invention features a simple, robust structure and is easy to install. Testing has shown that when implanted in a concrete shear wall, the anchor bolt cannot be pulled out, only broken or severed. Furthermore, when implanted in masonry walls made of sintered brick, aerated brick, or porous hollow brick, the anchor bolt exhibits pullout resistance that reaches the destructive limit of the base material.

[0008] To achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0009] The single multi-purpose wall anchor disclosed in the present invention includes a hollow tubular body and a plurality of root bars, wherein the root bars are bar-shaped, the front end of the hollow tubular body is connected to the rear end of the root bars, all the root bars are arranged circumferentially along the front end of the hollow tubular body, and the rear end of the hollow tubular body is provided with external threads and / or internal threads.

[0010] Preferably, the axis of the root bar is parallel to the axis of the hollow tubular body, and the front end surface of the root bar is an inclined surface, which is inclined forward from the inside to the outside along the radial direction of the hollow tubular body.

[0011] Preferably, the root strips are manufactured integrally with the hollow tubular body, the inner walls of all the root strips are located on the same circumference, the center of the circumference where the inner walls of all the root strips are located is located on the axis of the hollow tubular body, and the radius of the circumference where the inner walls of all the root strips are located is the same as the inner diameter of the hollow tubular body; the outer walls of all the root strips are located on another circumference, the center of the circumference where the outer walls of all the root strips are located is located on the axis of the hollow tubular body, and the radius of the circumference where the outer walls of all the root strips are located is the same as the outer diameter of the hollow tubular body.

[0012] Preferably, there are four root bars, which are arranged at equal intervals along the circumference of the hollow tubular body.

[0013] As a preferred embodiment, the hollow tubular body includes a threaded section, and the root bar is connected to the threaded section.

[0014] As another preferred embodiment, the hollow tubular body includes a transition section and a threaded section, the rear end of the root bar is connected to the front end of the transition section, the rear end of the transition section is connected to the front end of the threaded section, and the transition section and the threaded section are coaxially arranged.

[0015] Furthermore, the side wall of the transition section is provided with a through hole.

[0016] Preferably, the thickness of the connecting portion between the root bar and the transition section is smaller than the thickness of other portions of the root bar.

[0017] The present invention also discloses a method for installing a single multi-purpose wall anchor bolt as follows: after the root bar is implanted into the wall, anchor glue is filled into the wall through the hollow tubular body to secure the single multi-purpose wall anchor bolt to the wall.

[0018] Preferably, the installation method of the single multi-purpose wall anchor comprises the following steps:

[0019] Step 1: Drill holes in the porous hollow brick masonry wall;

[0020] Step 2: Clean the dust in the wall hole;

[0021] Step 3: Insert the root strip into the wall hole;

[0022] Step 4: Hammer the rear end of the hollow tubular body to allow the transition section or the threaded section to partially enter the wall hole;

[0023] Step 5: Use an air pump glue gun to inject the rebar glue into the hollow tubular body until the glue overflows from the wall;

[0024] Step 6: Let it stand for at least 72 hours until the rebar glue solidifies.

[0025] The beneficial effects of the present invention are as follows:

[0026] 1. The present invention can realize the hanging function through the external thread or internal thread provided at the rear end of the hollow tubular body, is suitable for the installation of wall hangings, and has a simple and firm structure.

[0027] 2. The present invention can achieve a guided expansion function through the inclined front end surface of the root bar.

[0028] 3. The present invention has low cost and is easy to install.

[0029] 4. The present invention is applicable to concrete shear walls. In actual testing, after the present invention is implanted in a concrete shear wall, it cannot be pulled out and can only be broken.

[0030] 5. The present invention is applicable to masonry walls such as fired bricks, aerated bricks, and porous hollow bricks; in actual tests, the pull-out resistance can reach the destruction limit of the base material.

[0031] 6. The connection between the root bar and the transition section is set to a smaller thickness, which is more conducive to the guided expansion of the root bar.

[0032] 7. The side wall of the transition section is provided with through holes to facilitate the outflow of the rebar glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A three-dimensional schematic diagram of Example 1

[0034] Figure 2 is an axial cross-sectional view of Example 1;

[0035] Figure 3 Schematic diagram of the front end of the root strip;

[0036] Figure 4 is a three-dimensional schematic diagram of Example 2;

[0037] In the figure: 1-hollow tubular body, 2-threaded section, 3-transition section, 4-root, 5-inclined surface, 6-through hole. DETAILED DESCRIPTION

[0038] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings.

[0039] Example 1

[0040] like Figure 1 、 Figure 2 、 Figure 3 As shown, this embodiment includes a hollow tubular body 1 and a plurality of root bars 4. The hollow tubular body includes a transition section 3 and a threaded section 2. The rear end of the root bar 4 is connected to the front end of the transition section 3, and the rear end of the transition section 3 is connected to the front end of the threaded section 2. The transition section 3 and the threaded section 2 are coaxially arranged. The root bars 4 are bar-shaped. All root bars 4 are arranged circumferentially along the front end of the hollow tubular body 1. The axis of the root bar 4 is parallel to the axis of the hollow tubular body 1. The front end surface of the root bar 4 is an inclined surface 5. The inclined surface 5 is inclined forward from the inside to the outside along the radial direction of the hollow tubular body 1. The side wall of the transition section 3 is provided with a through hole 6.

[0041] The root strips 4 are integrally manufactured with the hollow tubular body 1. The inner sidewalls of all the root strips 4 lie on the same circumference, the center of which lies on the axis of the hollow tubular body 1, and the radius of which is the same as the inner diameter of the hollow tubular body 1. The outer sidewalls of all the root strips 4 lie on another circumference, the center of which lies on the axis of the hollow tubular body 1, and the radius of which is the same as the outer diameter of the hollow tubular body 1. There are four root strips 4, which are evenly spaced along the circumference of the hollow tubular body 1. The thickness of the connection between the root strips 4 and the transition section 3 is less than the thickness of the rest of the root strips 4.

[0042] Typically, the length of this embodiment is 78 mm, of which the length of the threaded section 2 is 23 mm, the length of the threaded portion of the threaded section 2 is 20 mm, the distance between the thread and the rear end of the hollow tubular body 1 is 3 mm, the length of the transition section 3 is 10 mm, and the length of the root bar 4 is 45 mm. Of course, the above dimensions are only for specific examples and can be adjusted accordingly based on the actual wall conditions and the specific hanger to be installed.

[0043] Example 2

[0044] like Figure 4 As shown, the difference between this embodiment and embodiment 1 is that the hollow tubular body 1 does not include a transition section, and the rear end of the root bar 4 is directly connected to the threaded section. Therefore, the length of the root bar 4 in this embodiment is 55 mm.

[0045] The rest of this embodiment is the same as that of Embodiment 1, and therefore will not be described in detail.

[0046] The present invention also discloses a practical installation example of a single multi-purpose wall anchor bolt as follows:

[0047] The single multi-purpose wall anchor in this case is made of Q235B seamless steel pipe with a diameter of 10.9mm and a wall thickness of 1.95mm. The threaded end is 23mm long, the transition section in the middle is a solid wall pipe with a length of 10mm, and the root bar is 50mm long.

[0048] Step 1: Use a 14 mm diameter drill bit to drill holes in masonry walls such as porous hollow bricks, with a hole depth of 40 mm.

[0049] Step 2: Clean the wall holes with a brush.

[0050] Step 3: Use an air blower to clean the dust in the wall holes.

[0051] Step 4: Insert the root bar end of the single multi-purpose wall anchor into the hole.

[0052] Step 5: Hammer the end of the single multi-purpose wall anchor bolt until the middle part of the single multi-purpose wall anchor bolt is nailed into the wall.

[0053] Step 6: Use an air pump glue gun to inject the rebar glue into the hollow tubular body until the glue overflows from the wall.

[0054] Step 7: After 72 hours, the anchor glue is permanently cured and the installation is completed.

[0055] The tensile strength of the anchor bolts has been tested to be stable at above 15KN.

[0056] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A single multi-purpose wall anchor, characterized by: The invention comprises a hollow tubular body and a plurality of root bars, wherein the root bars are in the shape of bars, the front end of the hollow tubular body is connected to the rear end of the root bars, all the root bars are arranged circumferentially along the front end of the hollow tubular body, and the rear end of the hollow tubular body is provided with external threads and / or internal threads; the axis of the root bars is parallel to the axis of the hollow tubular body, the front end surface of the root bars is an inclined surface, and the inclined surface is inclined forward from the inside to the outside along the radial direction of the hollow tubular body; the hollow tubular body comprises a transition section and a threaded section, the rear end of the root bars is connected to the front end of the transition section, the rear end of the transition section is connected to the front end of the threaded section, and the transition section and the threaded section are coaxially arranged; the side wall of the transition section is provided with a through hole; The thickness of the connecting portion between the root bar and the transition section is smaller than the thickness of other portions of the root bar.

2. The single multi-purpose wall anchor according to claim 1, characterized in that: The root strips are manufactured integrally with the hollow tubular body, the inner walls of all the root strips are located on the same circumference, the center of the circumference where the inner walls of all the root strips are located is located on the axis of the hollow tubular body, and the radius of the circumference where the inner walls of all the root strips are located is the same as the inner diameter of the hollow tubular body; the outer walls of all the root strips are located on another circumference, the center of the circumference where the outer walls of all the root strips are located is located on the axis of the hollow tubular body, and the radius of the circumference where the outer walls of all the root strips are located is the same as the outer diameter of the hollow tubular body.

3. The single multi-purpose wall anchor according to claim 1 or 2, characterized in that: There are four root bars, which are arranged at equal intervals along the circumference of the hollow tubular body.

4. The method for installing a single multi-purpose wall anchor according to any one of claims 1 to 3, characterized in that: After the root strips are implanted into the wall, the wall is filled with anchor glue through the hollow tubular body, so that the single multi-purpose wall anchor bolt is fixed on the wall.

5. The installation method according to claim 4, characterized in that: The following steps are included: Step 1: Drill holes in the porous hollow brick masonry wall; Step 2: Clean the dust in the wall hole; Step 3: Insert the root strip into the wall hole; Step 4: Hammer the rear end of the hollow tubular body to allow the transition section or the threaded section to partially enter the wall hole; Step 5: Use an air pump glue gun to inject the rebar glue into the hollow tubular body until the glue overflows from the wall; Step 6: Let it stand for at least 72 hours until the rebar glue solidifies.

Images