Grouting anchor rod

Abstract

The utility model provides a grouting anchor rod which comprises a rod body and a plurality of arc-shaped plates, and through holes are formed in the front ends of the arc-shaped plates. The rod body is provided with a plurality of groups of arc-shaped plates along the length direction, and each group is uniformly provided with three arc-shaped plates along the circumference of the rod body. The rod body penetrates through the through hole, a gap between the through hole and the rod body is connected in a welded mode, the rear end of the arc-shaped plate faces the rear end of the rod body, the edge of the rear end of the arc-shaped plate is in sliding contact with the outer wall of the rod body, the middle section of the arc-shaped plate protrudes out of the rod body, and the distance between the protruding portion and the axis of the rod body is larger than or equal to the inner diameter of the anchor hole. The anchor rod can be closer to the axis of an anchor hole, and the anchor rod is finally located near the center of slurry, so that the stability of the anchor rod mounting structure is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of anchor rod structures, in particular to a grouting anchor rod. Background Art

[0002] In the construction of slope support, it is usually necessary to use the construction process of grouting anchor rods to improve the structural strength of the slope. During construction, drilling equipment is usually used to drill anchor holes on the slope, and then the anchor rods are inserted into the anchor holes. Finally, grouting is injected into the anchor holes. After the slurry solidifies, the anchor rods and the solidified slurry can prevent landslides in the surrounding mountains. In order to make the anchor rods always near the axis of the anchor hole when inserted into the anchor hole, the existing anchor rods usually weld supporting steel bars on the outside, and both ends of the supporting steel bars are welded to the anchor rods, and the middle part of the steel bars protrudes outward, and contacts the inner wall of the anchor hole through the middle part of the steel bars, so that the anchor rods are in the middle of the anchor hole. However, in order to facilitate the insertion of the anchor rod, the size of the middle part of the supporting steel bar protruding outward is not too large. Usually, the distance between the protruding part of the steel bar and the axis of the anchor rod is less than the radius of the anchor hole. Therefore, even after the steel bar is set, the anchor rod will be eccentric with the anchor hole. In addition, the steel bar itself is a strip structure, which is easy to embed into the soil on the side wall of the anchor hole, further increasing the eccentricity. This further leads to an increase in the eccentricity between the anchor rod and the anchor hole. Utility Model Content

[0003] In order to solve the deficiencies of the prior art, the utility model provides a grouting anchor rod, which can make the anchor rod closer to the axis of the anchor hole and finally make the anchor rod near the center of the slurry, thereby improving the stability of the anchor rod installation structure.

[0004] In order to achieve the purpose of this utility model, the following scheme is proposed:

[0005] A grouting anchor rod comprises a rod body and a plurality of arc-shaped plates, wherein the front ends of the arc-shaped plates are provided with through holes.

[0006] The rod body is provided with a plurality of groups of arc plates along the length direction, and each group is provided with three plates evenly along the circumference of the rod body.

[0007] The rod body passes through the through hole, and the gap between the through hole and the rod body is connected by welding. The rear end of the arc plate faces the rear end of the rod body, and the rear end edge of the arc plate is in sliding contact with the outer wall of the rod body. The middle section of the arc plate protrudes toward the outside of the rod body, and the distance between the protruding part and the axis of the rod body is greater than or equal to the inner diameter of the anchor hole.

[0008] The beneficial effects of the utility model are as follows: the arc plate has a larger cross-sectional width, and the contact range between the arc plate and the anchor hole is larger, which can effectively prevent the arc plate from being embedded in the soil, and the arc plates arranged along the circumference can provide sufficient support for the rod body. The eccentric distance between the anchor rod and the axis of the anchor hole can be reduced, so that the anchor rod is in the middle of the anchor hole, and then the anchor rod is in the middle of the slurry after solidification, so as to improve the stability of the anchor rod casting structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present invention.

[0010] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of the present application is shown.

[0011] Figure 2 An end view of a preferred embodiment of the present application is shown.

[0012] Figure 3 A schematic diagram of a preferred structure of an arc plate is shown.

[0013] Markings in the figure: rod body-1, arc plate-2, through hole-21, semicircular notch-22, through hole-23. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings, but the embodiments described in the utility model are only part of the embodiments of the utility model, rather than all the embodiments.

[0015] like Figures 1 to 3 As shown, a grouting anchor rod comprises: a rod body 1 and a plurality of arc-shaped plates 2, wherein the front end of the arc-shaped plates 2 is provided with a through hole 21.

[0016] The rod body 1 is provided with a plurality of groups of arc plates 2 along the length direction, each group is evenly provided with three plates along the circumference of the rod body 1 , and each arc plate 2 in the same group is staggered along the axis of the rod body 1 .

[0017] The rod body 1 passes through the through hole 21, which can effectively improve the connection stability between the arc plate 2 and the rod body 1, and the gap between the through hole 21 and the rod body 1 is connected by welding. The rear end of the arc plate 2 faces the rear end of the rod body 1, and the rear end edge of the arc plate 2 is in sliding contact with the outer wall of the rod body 1. During construction, the front end of the rod body 1 is inserted into the anchor hole, and the middle section of the arc plate 2 protrudes to the outside of the rod body 1, and the distance between the protruding part and the axis of the rod body 1 is greater than or equal to the inner diameter of the anchor hole.

[0018] When installing the anchor rod, the front end of the rod body 1 is inserted into the anchor hole. During the insertion process, since the distance between the protruding part of the arc plate 2 and the axis of the rod body 1 is greater than or equal to the inner diameter of the anchor hole, the arc plates 2 arranged circumferentially are all compressed toward the rod body 1, so that the arc plates 2 are used to stably support the rod body 1 in the middle of the anchor hole, and the compressed arc plates 2 will slide at their rear ends to adapt to the change in shape, so that the anchor rod can be smoothly inserted into the anchor hole. Since the arc plate 2 has a larger cross-sectional width, the contact range between it and the anchor hole is larger, which can effectively prevent the arc plate 2 from being embedded in the soil, and the arc plates 2 arranged along the circumference can provide sufficient support for the rod body 1. The above scheme can reduce the eccentric distance between the anchor rod and the axis of the anchor hole, so that the anchor rod is in the middle of the anchor hole, and then the anchor rod is in the middle of the solidified slurry, so as to improve the stability of the anchor rod casting structure. The reason why the front end of the arc plate 2 is welded to the rod body 1 and the rear end of the arc plate 2 is in sliding contact with the rod body 1 is that it can not only make the arc plate 2 automatically deform with the size of the anchor hole, but also prevent the inner wall of the anchor hole from getting stuck during the insertion of the anchor rod.

[0019] Preferably, Figures 1 to 3 As shown, a semicircular notch 22 is provided at the rear end of the arc plate 2, and the semicircular notch 22 is clamped on the outer side of the rod body 1 to prevent the rear end edge of the arc plate 2 from separating from the rod body 1, thereby causing the arc plate 2 to lose its supporting function on the rod body 1.

[0020] Preferably, Figures 1 to 3 As shown, a plurality of through holes 23 are provided on the arc plate 2, which help the slurry to flow more smoothly during grouting, and after the slurry is solidified, connecting ribs will be formed in the through holes 23, which help to further improve the installation stability of the anchor rod.

[0021] Preferably, the arc-shaped plate 2 is made of a metal plate or a plastic plate.

[0022] The above is only a preferred embodiment of the utility model, and does not mean that it is the only one or limit the utility model. Those skilled in the art should understand that various changes or equivalent replacements made to the utility model without departing from the scope of the utility model are within the scope of protection of the utility model.

Claims

1. A grouting anchor, characterized in that: include: A rod body (1) and a plurality of arc-shaped plates (2), wherein the front ends of the arc-shaped plates (2) are provided with through holes (21); The rod body (1) is provided with a plurality of groups of arc-shaped plates (2) along the length direction, and each group has three plates evenly arranged along the circumference of the rod body (1); The rod body (1) passes through the through hole (21), and the gap between the through hole (21) and the rod body (1) is connected by welding. The rear end of the arc plate (2) faces the rear end of the rod body (1), and the rear end edge of the arc plate (2) is in sliding contact with the outer wall of the rod body (1). The middle section of the arc plate (2) protrudes toward the outside of the rod body (1), and the distance between the protruding portion and the axis of the rod body (1) is greater than or equal to the inner diameter of the anchor hole.

2. A grouting anchor rod according to claim 1, characterized in that: A semicircular notch (22) is provided at the rear end of the arc-shaped plate (2), and the semicircular notch (22) is clamped on the outer side of the rod body (1).

3. A grouting anchor according to claim 1, characterized in that: A plurality of through holes (23) are formed on the arc-shaped plate (2).

4. A grouting anchor rod according to claim 1, characterized in that: The arc-shaped plate (2) is made of a metal plate or a plastic plate.

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