Shearing-resistant chemical anchor bolt

Abstract

The utility model discloses an anti-shearing chemical anchor bolt which comprises a bolt, a first nut and a second nut are installed on the upper portion of the bolt in a threaded mode, a gasket is movably sleeved outside the bolt, an extrusion ring is arranged at the lower end of the gasket, the bolt is sleeved with the extrusion ring in a sliding mode, a first expansion sleeve is arranged on the lower side of the extrusion ring, and a second expansion sleeve is arranged at the lower end of the first expansion sleeve. And the second expansion sleeve and the first expansion sleeve are movably sleeved on the bolt. The bolt comprises a threaded rod and an extrusion block, the extrusion block is fixedly connected to the lower end of the threaded rod, the second nut is screwed downwards, the second nut acts downwards on the gasket, the gasket acts downwards on the extrusion ring, the extrusion ring acts downwards on the first expansion sleeve, the second expansion sleeve slides downwards, and the second expansion sleeve is expanded through the lower portion of the bolt. The first expansion sleeve is expanded through the extrusion ring, so that the second expansion sleeve and the first expansion sleeve are matched with the target aperture, and the matching degree of the device and the mounting hole is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to chemical anchor technology field especially relates to a shear type chemical anchor. BACKGROUND

[0002] Chemical anchor is usually composed of screw rod, chemical rubber tube, washer and nut etc. Screw rod is the main force component of chemical anchor, generally adopts carbon steel or stainless steel material, and the surface is usually galvanized or other corrosion protection treatment to improve its corrosion resistance. One end of screw rod is threaded for matching with nut, and the other end is smooth for inserting into drilled hole. The length and diameter will be different according to different use requirements.

[0003] Because of the existing chemical anchor, the outer diameter cannot match the drilled hole, it is easy to shake, and the capacity is relatively low, thereby causing the problem of low matching degree of conventional chemical anchor and drilled hole.

[0004] Therefore, the shear type chemical anchor is provided to solve the above problems. CONTENT OF UTILITY MODEL

[0005] The utility model discloses a shear type chemical anchor to solve the problem of low matching degree of conventional chemical anchor and drilled hole.

[0006] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A shear type chemical anchor, including bolt, the upper thread of bolt is installed with first nut, second nut, the outside of bolt is movably sleeved with washer, the lower end of washer is equipped with extrusion ring, extrusion ring is slidably sleeved on bolt, the lower side of extrusion ring is equipped with first expansion sleeve, the lower end of first expansion sleeve is equipped with second expansion sleeve, second expansion sleeve, first expansion sleeve are movably sleeved on bolt. Down screw the second nut, the washer is acted on by second nut downward, make the washer act on extrusion ring downward, make the second expansion sleeve slide downward through extrusion ring act on first expansion sleeve downward, expand second expansion sleeve through bolt lower part, expand first expansion sleeve through extrusion ring, make second expansion sleeve, first expansion sleeve match target hole diameter, improve the matching degree of device and mounting hole.

[0008] Preferably, the bolt comprises a threaded rod and an extrusion block, the extrusion block is fixedly connected to the lower end of the threaded rod, and the first nut and the second nut are threadedly installed on the threaded rod. When the threaded rod and the extrusion block are installed, an outward pulling force is generated, the extrusion block is used to expand the chemical colloid outward, the chemical colloid is prevented from being scratched, and the damage resistance after installation is ensured.

[0009] The bolt preferably further comprises a knob fixedly connected to the lower end of the extruding block.

[0010] The extruding ring preferably comprises a first sliding ring, and a tapered ring is fixedly connected to the lower end of the first sliding ring, and the lower end of the gasket is in contact with the extruding ring.

[0011] The second expanding sleeve preferably comprises a sliding sleeve, and first elastic sheets are uniformly fixedly connected to the lower part of the sliding sleeve.

[0012] The first expanding sleeve preferably comprises a second sliding ring, and second elastic sheets are uniformly fixedly connected to the upper end of the second sliding ring.

[0013] The technical effects and advantages of the present application are summarized as follows:

[0014] 1. The second nut is screwed downward, the gasket is acted on downward by the second nut, the extruding ring is acted on downward by the gasket, the first expanding sleeve is acted on downward by the extruding ring, the second expanding sleeve is slid downward, the second expanding sleeve is expanded by the bolt, the first expanding sleeve is expanded by the extruding ring, the second expanding sleeve and the first expanding sleeve match the target hole diameter, and the matching degree of the device and the mounting hole is improved.

[0015] 2. When the threaded rod and the extruding block are installed, the chemical colloid is expanded outward by the extruding block after the outward pulling force is generated, the chemical colloid is prevented from being scratched, and the damage resistance after installation is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the present application;

[0017] Figure 2 It is a bolt structure schematic view of the present application;

[0018] Figure 3 It is an extruding ring structure schematic view of the present application;

[0019] Figure 4 It is a second expanding sleeve structure schematic view of the present application;

[0020] Figure 5 It is a first expanding sleeve structure schematic view of the present application.

[0021] In the diagram: 1. Bolt; 2. Extrusion ring; 3. Second expansion sleeve; 4. First expansion sleeve; 5. First nut; 6. Second nut; 7. Washer; 21. Threaded rod; 22. Extrusion block; 23. Knob; 31. First slip ring; 32. Conical ring; 41. Sliding sleeve; 42. First spring; 51. Second slip ring; 52. Second spring. Detailed Implementation

[0022] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments.

[0023] like Figure 1 As shown, a shear-resistant chemical anchor includes a bolt 1, with a first nut 5 and a second nut 6 threaded on the upper part of the bolt 1. A washer 7 is movably sleeved on the outside of the bolt 1. A compression ring 2 is provided at the lower end of the washer 7. The compression ring 2 is slidably sleeved on the bolt 1. A first expansion sleeve 4 is provided on the lower side of the compression ring 2. A second expansion sleeve 3 is provided at the lower end of the first expansion sleeve 4. The second expansion sleeve 3 and the first expansion sleeve 4 are movably sleeved on the bolt 1.

[0024] like Figure 1 and 2 As shown, bolt 1 includes a threaded rod 21 and a compression block 22. The compression block 22 is fixedly connected to the lower end of the threaded rod 21. The first nut 5 and the second nut 6 are threaded onto the threaded rod 21. After the threaded rod 21 and the compression block 22 are installed, an outward pulling force is generated, and the compression block 22 expands the chemical colloid outward to avoid scratching the chemical colloid.

[0025] like Figure 1 and 2 As shown, bolt 1 also includes a knob 23, which is fixedly connected to the lower end of the compression block 22. Place a wrench on the knob 23, and then use another wrench to tighten the second nut 6.

[0026] like Figure 1 and 3 As shown, the compression ring 2 includes a first slip ring 31, and a conical ring 32 is fixedly connected to the lower end of the first slip ring 31. The lower end of the washer 7 is in contact with the compression ring 2. When the conical ring 32 presses downward against the first expansion sleeve 4, the upper part of the first expansion sleeve 4 is guided to expand outward through the conical ring 32.

[0027] like Figure 1 and 4 As shown, the second expansion sleeve 3 includes a sliding sleeve 41, and a first spring sheet 42 is uniformly and fixedly connected to the lower part of the sliding sleeve 41. When the compression block 22 acts upward on the inside of the first spring sheet 42, the first spring sheet 42 expands outward.

[0028] like Figure 1 and5 As shown, the first expansion sleeve 4 comprises a second sliding ring 51, and the upper end of the second sliding ring 51 is uniformly fixedly connected with a second elastic sheet 52. After the conical ring 32 is pressed downward into the inside of the second elastic sheet 52, the second elastic sheet 52 is deformed outward, and the second elastic sheet 52 is expanded outward to match the target installation hole.

[0029] Working principle: the second nut 6 is screwed downward, the gasket 7 is acted on downward by the second nut 6, the gasket 7 is acted on downward by the extrusion ring 2, the first expansion sleeve 4 is acted on downward by the extrusion ring 2, the second expansion sleeve 3 is slid downward, the second expansion sleeve 3 is expanded by the bolt 1 at the lower part, the first expansion sleeve 4 is expanded by the extrusion ring 2, the second expansion sleeve 3 and the first expansion sleeve 4 match the target hole diameter, and the matching degree of the device and the installation hole is matched.

[0030] The above is only a preferable specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

[0031] In the description, the prior art known by the person skilled in the art and not changed is simply mentioned and the application direction is formed with the utility model to form a complete technology; the well-known technology of the person skilled in the art is avoided to assist the person skilled in the art to quickly understand the main content of the utility model.

Claims

1. A shear resistant chemical anchor, characterized by: The utility model provides a bolt (1), the upper portion threaded mounting of bolt (1) has first nut (5), second nut (6), the outside of bolt (1) is sleeved with washer (7), the lower end of washer (7) is equipped with extrusion ring (2), extrusion ring (2) is sleeved on bolt (1) and slides, the downside of extrusion ring (2) is equipped with first expansion sleeve (4), the lower end of first expansion sleeve (4) is equipped with second expansion sleeve (3), second expansion sleeve (3), first expansion sleeve (4) are sleeved on bolt (1) and move.

2. A shear-type chemical anchor according to claim 1, characterized in that: The bolt (1) comprises a threaded rod (21) and an extrusion block (22), the extrusion block (22) is fixedly connected to the lower end of the threaded rod (21), the first nut (5) and the second nut (6) are threadedly mounted on the threaded rod (21).

3. A shear-type chemical anchor according to claim 2, wherein: The bolt (1) further comprises a knob (23), the knob (23) is fixedly connected to the lower end of the extrusion block (22).

4. A shear-type chemical anchor according to claim 1, wherein: The extrusion ring (2) comprises a first sliding ring (31), the lower end of the first sliding ring (31) is fixedly connected with a tapered ring (32), the lower end of the washer (7) is in contact with the extrusion ring (2).

5. A shear-type chemical anchor according to claim 1, wherein: The second expansion sleeve (3) comprises a sliding sleeve (41), the lower part of the sliding sleeve (41) is uniformly fixedly connected with a first elastic sheet (42).

6. A shear-type chemical anchor according to claim 1, wherein: The first expansion sleeve (4) comprises a second sliding ring (51), the upper end of the second sliding ring (51) is uniformly fixedly connected with a second elastic sheet (52).

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