CN204942182U - The removable hammering type EXPANSION ANCHOR BOLTS improved - Google Patents

Abstract

The utility model discloses an improved detachable hammering type expansion bolt. The hollow screw body is in the shape of a tube, and one end of the outer circumference is provided with threads and a screw sleeve, and the other end of the outer circumference of the hollow screw body is provided with an annular groove, and There is an axial cross opening groove; the expansion screw is a round rod body, one end of which is conical, and the other end is conical shape, and the diameter of the round rod body matches the tubular inner diameter of the hollow screw body; the conical position of the expansion screw is equipped with The hook and the round rod body are inserted into the hollow screw body. The utility model has the advantages of simple structure, convenient use, quick installation, low cost, complete disassembly, reorganization of expansion bolts, multiple use, and restoration of the original shape of the building without affecting the appearance, which is convenient for production and formation of various series of products .

Description

Improved Detachable Hammer Expansion Bolt

technical field

The utility model relates to an anchor piece, which belongs to a connected and fixed structural part for construction engineering installation and mechanical installation, in particular to a detachable hammering type expansion bolt.

Background technique

Existing metal expansion bolts consist of anchor rod body, expansion sleeve, flat washer, spring pad and hexagonal nut. It uses the expansion of the expansion sleeve to generate friction with the wall to achieve the fixing effect. The principle is that after the expansion bolt is driven into the hole on the ground or wall, the nut on the expansion bolt is tightened with a wrench, and the anchor body moves outward, while the outer expansion sleeve does not move, and the expansion sleeve is deformed, making it fill up the entire hole , at this time, the expansion bolt cannot be pulled out. There are many kinds of anchoring methods, including inverted wedge type, resin anchoring type and expansion shell type. Its disadvantage is that the anchor body must be pulled out for a certain length to open the expansion sleeve to fix the anchor body in the borehole, so that the very long anchor head is exposed outside the wall, which is unsafe and unsightly. If it is not firm, people have to saw off the exposed head, which is time-consuming and labor-intensive, and the expansion sleeve is rusted and affects the safety of use.

Utility model content

The purpose of the utility model is to improve the existing metal casing expansion bolt structure, through the improvement of the detachable hammering expansion, so as to realize the detachable multiple use, and restore the original shape of the building without affecting the appearance.

In order to achieve the above object, the utility model adopts the following technical solutions. An improved detachable hammer-type expansion bolt, including a hollow screw body and an expansion screw, the hollow screw body is tubular, and one end of the outer circumference is provided with threads and a screw sleeve, and the other end of the outer circumference of the hollow screw body is provided with An annular groove, and an axial cross opening groove; the expansion nail is a round rod body, one end of which is conical, and the other end is conical, and the diameter of the round rod body matches the tubular inner diameter of the hollow screw body; A hook is provided at the circular platform-shaped position of the expansion nail, and the round rod body is inserted into the hollow screw body.

The length of the cross opening groove is 1/3 of the length of the hollow screw body.

The utility model has the following beneficial effects: it has the advantages of simple structure, convenient use, quick installation, low cost, complete disassembly, expansion bolts can be reorganized, and can be used many times to restore the original shape of the building without affecting the appearance and convenient Production forms various series of products.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of the hollow screw body of the utility model.

Fig. 3 is the schematic diagram of expanding nail in the utility model.

Fig. 4 is a schematic diagram of the installation state of the improved detachable hammer-type expansion bolt of the present invention.

In the figure: 1. hollow screw body, 2. expansion nail, 3. screw sleeve, 4. hook, 5. wall.

detailed description

The utility model will be further described below in conjunction with the accompanying drawings and embodiments. Referring to FIGS. 1 to 4, the improved detachable hammering type expansion bolt includes a hollow screw body 1 and an expansion screw 2. The hollow screw body 1 is tubular, And one end of the outer circumference is provided with threads and a screw sleeve 3 is installed, the other end of the outer circumference of the hollow screw body 1 is provided with an annular groove, and the inner hole at one end of the annular groove is a small through hole, and an axial cross opening groove is provided; The expansion screw 2 is a round rod body, one end of which is conical, and the other end is conical, and the diameter of the round rod body matches the tubular inner diameter of the hollow screw body 1; the frustum-shaped position of the expansion screw 2 is equipped with The hook 4 and the round rod body are inserted into the hollow screw body 1 . The length of the cross opening groove is 1/3 of the length of the hollow screw body 1 .

Embodiment: An improved detachable hammer-type expansion bolt, including a hollow screw body 1, an expansion screw 2, a screw sleeve 3 and a hook 4. One end of the hollow screw body 1 is processed with a cylindrical cross groove and an annular groove, and the other end is processed with threads. The screw sleeve 3 is installed on the threaded end of the hollow screw body 1 . During use, select the drill bit according to the outer diameter of the hollow screw body 1 to drill a hole (concrete or brick wall) on the body of wall 5, and the depth of the hole is greater than or equal to the length of the hollow screw body 1; insert the hollow screw body 1 into the concrete or brick In the 5 holes of the body of wall; then set the hook 4 on one end of the round table of the expansion nail 2. Then insert the expansion nail 2 into the hole of the hollow screw body 1, hammer the round table of the expansion screw 2, and make the cross opening groove and the annular groove of the hollow screw body 1 expand outward, so that the installation of the hollow screw body 1 and the wall body 5 The holes are closely and firmly combined; the screw sleeve 3 is tightened to compress the installation object between the wall body 5 and the screw sleeve 3, so that the object is fixed on the wall body. If the position of the object to be fixed needs to be changed, the screw sleeve 3 can be turned outward to withdraw, and the expansion nail 2 can be loosened so that the expansion screw 2 can be pulled out during the outward twisting of the screw sleeve 3 for disassembly and movement position to achieve the effect of repeated reuse.

The utility model has broad application prospects: it better solves the shortage of expansion shell metal expansion bolts, is safe and reliable, can be disassembled and reused, can restore the original state of buildings, and is more beautiful and convenient. Suitable for construction engineering installation and mechanical installation.

Claims (2)

1. the removable hammering type EXPANSION ANCHOR BOLTS improved, comprises cored screw body and swollen nail, it is characterized in that, described cored screw body in a tubular form, and one end of periphery is provided with screw thread and swivel nut is housed, the other end in described cored screw external week is provided with circular groove, and is provided with axial cross opening slot; Described swollen nail is round bar body, and its one end is coniform, and the other end is round table-like, and through matching in the tubulose of the diameter of round bar body and described cored screw body; Hook is equipped with in the round table-like position of described swollen nail, and round bar body is plugged in described cored screw body.

2. the removable hammering type EXPANSION ANCHOR BOLTS of improvement according to claim 1, is characterized in that, the length of described cross open groove is 1/3 of described cored screw body length.