Pressure-bearing type expansion anchor rod

Abstract

The utility model relates to the technical field of expansion body anchor rods, and discloses a pressure-bearing type expansion body anchor rod which comprises a cement stone body, a reserved installation groove formed in the cement stone body and an anchor rod body movably connected in the reserved installation groove, and the inner wall of the reserved installation groove is sequentially provided with a first clamping groove and a second clamping groove from top to bottom. Two elastic assemblies are arranged on the side wall of the anchor rod from top to bottom. According to the pressure-bearing type expansion anchor rod, an elastic positioning assembly and a first clamping key are mounted on the side wall of the anchor rod, and the first clamping key is clamped with a first clamping groove in a reserved mounting groove, so that the connection relation between the anchor rod and a cement stone body is more stable; the stability between the anchor rod and the cement stone body can be further improved, and the clamping stability of the first clamping key and the first clamping groove can be effectively improved in the mode that the positioning rod and the positioning groove are clamped.

Description

Technical Field

[0001] The utility model relates to the technical field of expanded body anchor rods, in particular to a pressure-bearing expanded body anchor rod. Background Art

[0002] In various fields of construction engineering, there are many underground buildings and structures. Groundwater will produce buoyancy on underground structures. Therefore, anti-floating components are generally required to resist water buoyancy. Anti-floating anchor rods are a kind of pure anti-floating components. Traditional anchor rods use down-the-hole drills to drill holes in the strata, set anchor rod bodies, and inject cement slurry to connect the foundation of the building or structure with the foundation rock and soil layer into a whole, so that the underground rock and soil layer can effectively resist the buoyancy of groundwater. However, with the development and utilization of underground space, the depth of the foundation of buildings and structures continues to increase, and the requirements for anti-floating projects are getting higher and higher. Due to the influence of the elastic deformation of the steel bars, the maximum length of the anti-floating anchor rods generally does not exceed 15m, resulting in its anti-floating bearing capacity is generally not large, and gradually cannot meet the needs of deep anti-floating projects.

[0003] An expanded anchor rod is a new type of anchor rod formed by expanding the hole with high pressure rotary spraying to form a cavity with a larger diameter at the end of the anti-floating anchor rod, and then placing the rod body and injecting cement slurry. Due to the enlarged head part formed at the end, its anti-floating bearing capacity can be greatly improved. Compared with traditional anchor rods of the same length, its anti-floating bearing capacity can be increased by 3 to 5 times. However, due to the significant improvement in the anti-floating bearing capacity, the connection strength between the cement stone body and the anchor rod body often cannot meet the anti-floating bearing capacity requirement, and the anchor rod body and the cement stone body are separated, resulting in anchor rod failure from time to time, which seriously affects the bearing capacity of the expanded anchor rod and the quality of the anti-floating project. Therefore, a pressure-bearing expanded anchor rod is proposed. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a pressure-bearing expanded anchor rod, which has the advantages of increasing the stability of the anchor rod and the cement stone body, and solves the problem that the anchor rod and the cement stone body are easy to fall off.

[0006] (II) Technical solution

[0007] In order to achieve the above purpose of increasing the stability of the anchor rod and the cement stone body, the utility model provides the following technical solutions:

[0008] A pressure-bearing expanded anchor rod comprises a cement stone body, a reserved installation groove provided on the cement stone body, and an anchor rod movably connected inside the reserved installation groove, wherein the inner wall of the reserved installation groove is provided with a first clamping groove and a second clamping groove in sequence from top to bottom, and two elastic force components are provided on the side wall of the anchor rod from top to bottom, and a first clamping key and a second clamping key are respectively installed on the two elastic force components, wherein the first clamping key is clamped with the first clamping groove, and wherein the second clamping key is clamped with the second clamping groove.

[0009] As a preferred technical solution of the utility model, a limiting block is installed on the side wall of the anchor rod, and a limiting groove is vertically opened on the side wall of the reserved installation groove, wherein the limiting block is slidably connected to the limiting groove.

[0010] As a preferred technical solution of the utility model, the elastic component includes a spring groove opened on the side wall of the anchor rod, a positioning spring installed inside the spring groove, and a limit plate installed on the end of the positioning spring away from the inner wall of the spring groove, wherein the first snap-in key and the second snap-in key are respectively installed on the side walls of the two limit plates.

[0011] As a preferred technical solution of the utility model, a positioning rod is transversely installed on the inner wall of the first card slot, and a positioning groove is opened on the side wall of the first card key close to the first card slot, wherein the positioning rod is engaged with the positioning groove.

[0012] As a preferred technical solution of the present utility model, the inner bottom wall of the first card slot is arranged to be inclined downward.

[0013] As a preferred technical solution of the present invention, the bottom of the second clamping key is configured as an inclined surface.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a pressure-bearing expanded anchor rod, which has the following beneficial effects:

[0016] The pressure-bearing expanded anchor rod has an elastic positioning component and a first snap-in key installed on the side wall of the anchor rod, and the first snap-in key is snapped with the first snap-in slot on the reserved installation slot, so that the connection between the anchor rod and the cement stone body is more stable. The second snap-in key is snapped with the second snap-in slot to further increase the stability between the anchor rod and the cement stone body. The positioning rod is snapped with the positioning slot to effectively increase the stability of the first snap-in key and the first snap-in slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view cross-sectional schematic diagram of the structure of the utility model;

[0018] Figure 2 The utility model structure Figure 1 A partial enlarged schematic diagram of part A shown;

[0019] Figure 3 The utility model structure Figure 1 A partial enlarged schematic diagram of part B is shown.

[0020] In the figure: 1. anchor rod; 2. cement stone body; 3. limit groove; 4. limit block; 5. reserved installation groove; 6. first clamping groove; 7. positioning rod; 8. first clamping key; 9. positioning groove; 10. second clamping groove; 11. second clamping key; 12. spring groove; 13. positioning spring; 14. limit plate; 15. inclined surface. DETAILED DESCRIPTION

[0021] 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.

[0022] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 direct connection, or an indirect connection 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.

[0024] See also Figure 1-3A pressure-bearing expanded anchor rod comprises a cement stone body 2, a reserved installation groove 5 provided on the cement stone body 2, and an anchor rod 1 movably connected inside the reserved installation groove 5, the inner wall of the reserved installation groove 5 is provided with a first clamping groove 6 and a second clamping groove 10 in sequence from top to bottom, two elastic components are provided on the side wall of the anchor rod 1 from top to bottom, and a first clamping key 8 and a second clamping key 11 are respectively installed on the two elastic components, wherein the first clamping key 8 is clamped with the first clamping groove 6, wherein the second clamping key 11 is clamped with the second clamping groove 10, wherein the elastic component comprises a spring groove 12 provided on the side wall of the anchor rod 1, a positioning spring 13 installed inside the spring groove 12, and a spring installed away from the positioning spring 13. A limit plate 14 is provided on one end of the inner wall of the groove 12, wherein the first snap-in key 8 and the second snap-in key 11 are respectively installed on the side walls of the two limit plates 14, so that when the anchor rod 1 is installed downward inside the cement stone body 2, when the first snap-in key 8 moves to the first snap-in groove 6, the elastic force of the positioning spring 13 can be stretched to make the first snap-in key 8 move toward the inside of the first snap-in groove 6 until the first snap-in key 8 is snap-fitted with the first snap-in groove 6, thereby achieving the effect of fixing the anchor rod 1 inside the cement stone body 2, wherein the snap-in method of the second snap-in key 11 and the second snap-in groove 10 is the same as the snap-in method of the first snap-in key 8 and the first snap-in groove 6, and through the upper and lower sets of snap-in mechanisms, the stability of the installation of the anchor rod 1 can be effectively increased.

[0025] In this embodiment, a limiting block 4 is installed on the side wall of the anchor rod 1, and a limiting groove 3 is vertically opened on the side wall of the reserved installation groove 5, wherein the limiting block 4 is slidably connected to the limiting groove 3. Through the sliding connection between the limiting block 4 and the limiting groove 3, when the anchor rod 1 moves downward and is inserted into the cement stone body 2, the first snap-in key 8 can be located on the same vertical line as the first snap-in groove 6, thereby enabling the first snap-in key 8 to complete the process of snapping with the first snap-in groove 6 by moving downward.

[0026] In this embodiment, a positioning rod 7 is horizontally installed on the inner wall of the first slot 6, and a positioning groove 9 is opened on the side wall of the first slot 6 near the first slot 6, wherein the positioning rod 7 is engaged with the positioning groove 9. By engaging the positioning rod 7 with the positioning groove 9, the stability of the engagement between the first slot 6 and the first slot 6 can be further increased, thereby increasing the stability of the installation of the anchor rod 1.

[0027] In this embodiment, the inner bottom wall of the first slot 6 is arranged to be inclined downward, and the bottom of the second snap-in key 11 is arranged to be an inclined surface 15, so that when the second snap-in key 11 moves downward, it will extend to the inside of the first slot 6. At this time, it is only necessary to make the anchor rod 1 continue to move downward, and the second snap-in key 11 will pass through the inclined surface 15 at the bottom and slide out from the bottom of the first slot 6 until the second snap-in key 11 continues to move downward to the second slot 10, and the elastic force of the stretched positioning spring 13 tends to the inside of the second slot 10 and snaps into the second slot 10, so that the anchor rod 1 is easier to install and fix through the shape of the inner wall of the first slot 6 and the inclined surface 15 at the bottom of the second snap-in key 11.

[0028] Working principle: When the anchor rod 1 is inserted downward into the cement stone body 2, the limit block 4 is aligned with the limit groove 3, and then the anchor rod 1 is inserted into the reserved installation groove 5. As the anchor rod 1 moves downward, the first snap-in key 8 and the second snap-in key 11 are moved to the first snap-in groove 6 and the second snap-in groove 10 respectively. Through the elastic force of the two positioning springs 13, the first snap-in key 8 is pushed into the first snap-in groove 6, and the second snap-in key 11 is pushed into the second snap-in groove 10, thereby establishing a snap-in relationship, thereby achieving the effect of fixing the installation of the anchor rod 1.

[0029] 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 pressure-bearing expanded anchor rod, comprising a cement stone body (2), a reserved installation groove (5) provided on the cement stone body (2), and an anchor rod (1) movably connected inside the reserved installation groove (5), characterized in that: The inner wall of the reserved installation groove (5) is provided with a first clamping groove (6) and a second clamping groove (10) in sequence from top to bottom, and the side wall of the anchor rod (1) is provided with two elastic components from top to bottom, and the two elastic components are respectively installed with a first clamping key (8) and a second clamping key (11), wherein the first clamping key (8) is clamped with the first clamping groove (6), and wherein the second clamping key (11) is clamped with the second clamping groove (10).

2. A pressure-bearing expanded anchor rod according to claim 1, characterized in that: A limiting block (4) is installed on the side wall of the anchor rod (1), and a limiting groove (3) is vertically provided on the side wall of the reserved installation groove (5), wherein the limiting block (4) is slidably connected to the limiting groove (3).

3. A pressure-bearing expanded anchor rod according to claim 1, characterized in that: The elastic component comprises a spring groove (12) provided on the side wall of the anchor rod (1), a positioning spring (13) installed inside the spring groove (12), and a limiting plate (14) installed on one end of the positioning spring (13) away from the inner wall of the spring groove (12), wherein the first clamping key (8) and the second clamping key (11) are respectively installed on the side walls of the two limiting plates (14).

4. A pressure-bearing expanded anchor rod according to claim 1, characterized in that: A positioning rod (7) is transversely mounted on the inner wall of the first card slot (6), and a positioning groove (9) is provided on the side wall of the first card slot (6) adjacent to the first card slot (8), wherein the positioning rod (7) is engaged with the positioning groove (9).

5. The pressure-bearing expanded anchor rod according to claim 1, characterized in that: The inner bottom wall of the first clamping slot (6) is arranged to be inclined downward.

6. The pressure-bearing expanded anchor rod according to claim 1, characterized in that: The bottom of the second latching key (11) is arranged as an inclined surface (15).

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