Composite anchor bolt

Abstract

The utility model belongs to the technical field of anchor bolts, and particularly discloses a composite anchor bolt which comprises a bolt column, a limiting sleeve and a supporting sleeve, the bolt column comprises a first bolt body, a limiting block, a second bolt body, a third bolt body and an auxiliary bolt, the limiting block is arranged at the top end of the first bolt body, the second bolt body is arranged at the top end of the limiting block, and the third bolt body is arranged at the top end of the second bolt body. The auxiliary bolt is arranged at the top end of the third bolt body, the third bolt body is in threaded connection with a nut, the first bolt column is sleeved with the limiting sleeve and the supporting sleeve, an expansion sleeve is arranged at the end, away from the limiting block, of the limiting sleeve, a plurality of openings are formed in the expansion sleeve, a first inclined supporting face is arranged on the inner side of the expansion sleeve, and the supporting sleeve is in threaded connection with the first bolt body. The supporting sleeve is provided with a second inclined supporting face matched with the first inclined supporting face, the arranged second inclined supporting face is used for being matched with the first inclined supporting face to open the expansion sleeve, the limiting sleeve can be detached by screwing off the supporting sleeve from the first bolt body, and the nut can also be screwed off from the third bolt body.

Description

Technical Field

[0001] The utility model relates to the technical field of anchor bolts, in particular to a composite anchor bolt. Background Art

[0002] Composite anchor bolts, also called expansion anchor bolts, are a common threaded fastener used to fix pipes, brackets or equipment on fixed bodies such as walls, floors or columns. The expansion anchor bolts currently on the market are mainly composed of an anchor bolt body and an expansion sleeve sleeved on the anchor bolt body.

[0003] At present, when using composite anchor bolts on the market, anchor holes are usually pre-drilled at specific positions, and then the composite anchor bolts are driven into the preset anchor holes to install the composite anchor bolts. However, the expansion tube parts of the existing composite anchor bolts are mostly fixed on the anchor bolt body and sold and used in sets. It is difficult to remove other parts such as the expansion tube, and it cannot meet the use requirements of on-site assembly in construction sites. Utility Model Content

[0004] The purpose of the utility model is to provide a composite anchor bolt to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a composite anchor bolt, comprising a bolt column, a limiting sleeve and a supporting sleeve, wherein the bolt column comprises a first bolt body, a limiting block, a second bolt body, a third bolt body and an auxiliary bolt, the limiting block is arranged at the top end of the first bolt body, the second bolt body is arranged at the top end of the limiting block, the third bolt body is arranged at the top end of the second bolt body, the auxiliary bolt is arranged at the top end of the third bolt body, a nut is threadedly connected to the third bolt body, the limiting sleeve and the supporting sleeve are both sleeved on the first bolt column, the limiting sleeve contacts the limiting block, an expansion sleeve is arranged at one end of the limiting sleeve away from the limiting block, a plurality of openings are opened on the expansion sleeve, and a first oblique supporting surface is arranged on the inner side of the expansion sleeve, the supporting sleeve is threadedly connected to the first bolt body, a second oblique supporting surface cooperating with the first oblique supporting surface is arranged on the supporting sleeve, and the second oblique supporting surface is used to cooperate with the first oblique supporting surface to expand the expansion sleeve, the limiting sleeve can be removed by unscrewing the supporting sleeve from the first bolt body, and the nut can also be unscrewed from the third bolt body at the same time, so as to facilitate its disassembly.

[0006] Preferably, the openings are distributed on the expansion sleeve in an annular array.

[0007] Preferably, a plurality of grooves are evenly arranged on the outer side wall of the support sleeve, and the grooves are arranged to facilitate the rotation of the support sleeve.

[0008] Preferably, a gasket is provided under the nut, and providing the gasket can increase the contact area.

[0009] Preferably, the auxiliary bolt is a hexagonal rod. The auxiliary bolt is mainly provided to facilitate the use of a wrench or other tools to limit the bolt column when the nut is turned.

[0010] Preferably, an annular groove is provided between the second bolt body and the third bolt body, and the annular groove serves as a partition.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model can separate the expansion sleeve from the bolt column by unscrewing the support sleeve from the first bolt column for easy disassembly, and can be used normally by putting the limit sleeve on the first bolt column and then screwing the support sleeve on the first bolt column, so as to facilitate on-site assembly, and the disassembly and assembly are simple and easy to understand, which effectively improves the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the bolt structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the limiting sleeve and the supporting sleeve of the utility model.

[0016] In the figure: 1. bolt column; 101. first bolt body; 102. limiting block; 103. second bolt body; 104. third bolt body; 105. auxiliary bolt; 106. annular groove; 2. limiting sleeve; 201. expansion sleeve; 202. opening; 203. first diagonal support surface; 3. nut; 301. gasket; 4. supporting sleeve; 401. second diagonal support surface; 402. groove. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] See also Figure 1-3 The utility model provides a technical solution: a composite anchor bolt, including a bolt column 1, a limiting sleeve 2 and a supporting sleeve 4, the bolt column 1 includes a first bolt body 101, a limiting block 102, a second bolt body 103, a third bolt body 104 and an auxiliary bolt 105, the limiting block 102 is arranged at the top of the first bolt body 101, the second bolt body 103 is arranged at the top of the limiting block 102, the third bolt body 104 is arranged at the top of the second bolt body 103, the auxiliary bolt 105 is arranged at the top of the third bolt body 104, the third bolt body 104 is threadedly connected with a nut 3, the limiting sleeve 2 and the supporting sleeve 4 are both sleeved on the first bolt column 1, the limiting sleeve 2 and the limiting block 102 are arranged at the top of the first bolt body 101, the limiting block 102 and the third bolt body 104 are arranged at the top of the second bolt body 103, the auxiliary bolt 105 is arranged at the top of the third bolt body 104, the third bolt body 104 is threadedly connected with a nut 3, the limiting sleeve 2 and the supporting sleeve 4 are sleeved on the first bolt column 1, the limiting sleeve 2 and the limiting block 102 are arranged at the top of the first bolt body 101, the limiting block 102 and the third bolt body 104 are arranged at the top of the third bolt body 104, the auxiliary bolt 105 and the third bolt body 104 are threadedly connected with a nut 3, the limiting sleeve 2 and the supporting sleeve 4 are sleeved on the first bolt column 1, the limiting sleeve 2 and the limiting block 102 ... Contact, an expansion sleeve 201 is provided at one end of the limit sleeve 2 away from the limit block 102, a plurality of openings 202 are opened on the expansion sleeve 201, and a first diagonal support surface 203 is provided on the inner side of the expansion sleeve 201, and a threaded connection is adopted between the support sleeve 4 and the first bolt body 101, and a second diagonal support surface 401 cooperating with the first diagonal support surface 203 is provided on the support sleeve 4, and the second diagonal support surface 401 is provided for cooperating with the first diagonal support surface 203 to open the expansion sleeve 201, and the limit sleeve 2 can be removed by unscrewing the support sleeve 4 and thus the first bolt body 101, and at the same time, the nut 3 can also be unscrewed from the third bolt body 104, so as to facilitate its disassembly.

[0021] Furthermore, the openings 202 are distributed on the expansion sleeve 201 in a ring array.

[0022] Furthermore, a plurality of grooves 402 are evenly arranged on the outer wall of the support sleeve 4 , and the grooves 402 are arranged to facilitate the rotation of the support sleeve 4 .

[0023] Furthermore, a gasket 301 is disposed under the nut 3 , and the gasket 301 can increase the contact area.

[0024] Furthermore, the auxiliary bolt 105 is a hexagonal rod, and the auxiliary bolt is provided mainly to facilitate the use of a wrench or other tools to limit the bolt column 1 when the nut 3 is rotated.

[0025] Furthermore, an annular groove 106 is provided between the second bolt body 103 and the third bolt body 104 , and the annular groove 106 serves as a partition.

[0026] To sum up, when the composite anchor is in use, a groove for installing the anchor is pre-opened at a specific position, and then the limit sleeve 2 is put on the first bolt body 101, and the limit sleeve 2 is contacted with the limit block 102, and then the support sleeve 4 is screwed on the first bolt column 101, and it is noted that the second diagonal support surface 401 is facing the expansion sleeve 201, and then it can be used normally, the entire anchor is inserted into the preset groove, and then the nut 3 is screwed on the third bolt body 104, and the nut 3 is used to drive the entire bolt column 1 to move upward, so that the entire bolt column 1 drives the support sleeve 4 to move, and the second diagonal support surface 401 is used to contact and squeeze the first diagonal support surface 203, so as to open the expansion sleeve 201.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite anchor bolt, characterized in that: The invention comprises a bolt column (1), a limiting sleeve (2) and a supporting sleeve (4); the bolt column (1) comprises a first bolt body (101), a limiting block (102), a second bolt body (103), a third bolt body (104) and an auxiliary bolt (105); the limiting block (102) is arranged at the top of the first bolt body (101); the second bolt body (103) is arranged at the top of the limiting block (102); the third bolt body (104) is arranged at the top of the second bolt body (103); the auxiliary bolt (105) is arranged at the top of the third bolt body (104); and the third bolt body (104) is threadedly connected with a screw. The nut (3), the limiting sleeve (2) and the supporting sleeve (4) are all sleeved on the first bolt column (1); the limiting sleeve (2) contacts the limiting block (102); an expansion sleeve (201) is provided at one end of the limiting sleeve (2) away from the limiting block (102); a plurality of openings (202) are provided on the expansion sleeve (201); and a first oblique supporting surface (203) is provided on the inner side of the expansion sleeve (201); the supporting sleeve (4) is connected to the first bolt body (101) by a threaded connection; and a second oblique supporting surface (401) is provided on the supporting sleeve (4) and matches the first oblique supporting surface (203).

2. A composite anchor bolt according to claim 1, characterized in that: The openings (202) are distributed on the expansion sleeve (201) in the form of an annular array.

3. A composite anchor bolt according to claim 1, characterized in that: A plurality of grooves (402) are evenly arranged on the outer side wall of the support sleeve (4).

4. A composite anchor bolt according to claim 1, characterized in that: A gasket (301) is provided below the nut (3).

5. The composite anchor bolt according to claim 1, characterized in that: The auxiliary bolt (105) is a hexagonal rod.

6. A composite anchor bolt according to claim 1, characterized in that: An annular groove (106) is provided between the second bolt body (103) and the third bolt body (104).

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