Supporting anchor rod

Abstract

The utility model discloses a supporting anchor rod, which relates to the technical field of anchor rods and is characterized by comprising a plurality of supporting plates arranged on the outer side of a hollow anchor rod, the supporting plates are distributed in the circumferential direction of the hollow anchor rod at equal intervals, and a plurality of accommodating grooves for accommodating the supporting plates are formed in the outer surface of the hollow anchor rod. A plurality of magnetic attraction rods are arranged in the hollow anchor rod, the multiple magnetic attraction rods correspond to the multiple supporting plates in a one-to-one mode, the magnetic attraction rods are fixedly connected with the supporting plates through connecting rods, and the connecting rods penetrate through the interior of the hollow anchor rod and are in sliding connection with the hollow anchor rod; a plug rod is fixedly installed in the hollow anchor rod through a fixing frame, a movable ring is further arranged in the hollow anchor rod, a through hole matched with the plug rod is formed in the inner side of the movable ring, a plurality of first inclined rods are fixedly installed on the movable ring, a first guide face is arranged at one end of each magnetic attraction rod, and a second guide face is arranged at the other end of each magnetic attraction rod. And the supporting strength of the roadway can be improved.

Description

Technical Field

[0001] This utility model relates to the field of anchor bolt technology, specifically a support anchor bolt. Background Technology

[0002] Rock bolts are the most basic component of mining roadway support. They reinforce the surrounding rock of the roadway together, allowing the surrounding rock to support itself. They enable the support system and construction process to continuously adapt to the deformation of the surrounding rock, thereby controlling the deformation of the surrounding rock and maintaining the stability of the roadway.

[0003] Currently, hollow grouting anchor bolts are commonly used for reinforcement and support. Grouting is used to fill cracks in the surrounding rock, forming a unified surrounding rock structure that can control tunnel deformation. When supporting the tunnel roof, hollow grouting anchor bolts are inserted into boreholes in the rock strata. A grout stopper at the bottom of the anchor bolt plugs the borehole, and cement mortar is injected into the hole through a through-hole at the bottom of the bolt. However, pre-tightening force is only generated after the cement mortar has set, making rapid support impossible. To ensure the cement mortar fills the gap between the anchor bolt and the borehole, the viscosity of the cement mortar is low, further prolonging the setting time. Furthermore, the anchor bolt itself has weight, causing it to sink within the borehole, resulting in uneven cement mortar distribution between the anchor bolt and the borehole. Some areas between the anchor bolt and the borehole contain very little cement mortar, which is detrimental to improving the support strength of the tunnel. Therefore, to solve the above technical problems, this utility model provides a support anchor bolt. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a support anchor bolt.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a support anchor bolt, comprising multiple support plates disposed on the outside of a hollow anchor bolt, the multiple support plates being equally spaced along the circumference of the hollow anchor bolt, multiple receiving grooves for accommodating the support plates being formed on the outer surface of the hollow anchor bolt, multiple magnetic suction rods being disposed inside the hollow anchor bolt, the multiple magnetic suction rods corresponding one-to-one with the multiple support plates, the magnetic suction rods being fixedly connected to the support plates via connecting rods, the connecting rods penetrating the interior of the hollow anchor bolt and being slidably connected to the hollow anchor bolt;

[0006] The hollow anchor rod has a plug rod fixedly installed inside by a fixing bracket. The hollow anchor rod also has a movable ring inside. The inner side of the movable ring has a through hole that matches the plug rod. Multiple first inclined rods are fixedly installed on the movable ring. Each magnetic rod has a first guide surface at one end. One end of the first inclined rod is in contact with the first guide surface. A second inclined rod is fixedly installed on each first inclined rod. An elastic telescopic rod is fixedly installed inside the hollow anchor rod. The movable end of the elastic telescopic rod has a second guide surface on the side facing the movable ring.

[0007] Beneficial effects

[0008] Compared with the prior art, the present invention provides a support anchor bolt, which has the following beneficial effects:

[0009] Multiple support plates are installed on the outside of the hollow anchor bolt, and multiple magnetic rods are installed inside the hollow anchor bolt. Each magnetic rod is fixedly connected to a support plate via a connecting rod. A plug rod is fixedly installed inside the hollow anchor bolt via a fixing frame. A movable ring is also installed inside the hollow anchor bolt. The inner side of the movable ring has a through hole adapted to the plug rod. Multiple first inclined rods are fixedly installed on the movable ring. A first guide surface is provided on one end of each magnetic rod. A second inclined rod is fixedly installed on each first inclined rod. An elastic telescopic rod is fixedly installed inside the hollow anchor bolt. A second guide surface is provided on the movable end of the elastic telescopic rod facing the movable ring. After the cement mortar is delivered into the borehole, the multiple support plates can only remain in the extended state. The multiple support plates are in contact with the borehole, and the hollow anchor bolt will not sink. The cement mortar can be evenly distributed on the outside of the hollow anchor bolt, which helps to improve the support strength of the roadway.

[0010] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic cross-sectional view of the hollow anchor rod in this utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the support plate, magnetic rod, connecting rod and elastic telescopic rod in this utility model;

[0015] Figure 4 This is a schematic diagram of the disassembled structure of the movable ring and the stopper rod in this utility model;

[0016] Figure 5 This is a schematic diagram of the hollow anchor rod in this utility model.

[0017] In the diagram: 1. Hollow anchor rod; 2. Support plate; 3. Magnetic rod; 4. Connecting rod; 5. First guide surface; 6. Movable ring; 7. First inclined rod; 8. Second inclined rod; 9. Plug rod; 10. Fixing frame; 11. Elastic telescopic rod; 12. Receiving groove; 13. Second guide surface. Detailed Implementation

[0018] The following combination Figures 1 to 5 The principles and features of this utility model are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0019] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] Please combine Figures 1 to 5 As shown, this utility model provides a support anchor bolt, which includes multiple support plates 2 disposed on the outside of a hollow anchor bolt 1. The multiple support plates 2 are evenly distributed in the circumferential direction of the hollow anchor bolt 1. Multiple magnetic rods 3 are disposed inside the hollow anchor bolt 1, and the multiple magnetic rods 3 correspond one-to-one with the multiple support plates 2. The magnetic rods 3 are fixedly connected to the support plates 2 through connecting rods 4. The connecting rods 4 penetrate the interior of the hollow anchor bolt 1 and are slidably connected to the hollow anchor bolt 1. Under normal conditions, two adjacent magnetic rods 3 are attracted and attached to each other. Since multiple receiving grooves 12 for accommodating the support plates 2 are opened on the outer surface of the hollow anchor bolt 1, the multiple magnetic rods 3 are located at the center of the hollow anchor bolt 1, and each support plate 2 is located in the receiving groove 12.

[0022] Inside the hollow anchor rod 1, a plug rod 9 is fixedly installed by a fixing bracket 10. Inside the hollow anchor rod 1, a movable ring 6 is also provided. The inner side of the movable ring 6 has a through hole that matches the plug rod 9. Multiple first inclined rods 7 are fixedly installed on the movable ring 6. Each magnetic rod 3 has a first guide surface 5 at one end. One end of the first inclined rod 7 is in contact with the first guide surface 5. A second inclined rod 8 is fixedly installed on each first inclined rod 7. Inside the hollow anchor rod 1, an elastic telescopic rod 11 is fixedly installed. The movable end of the elastic telescopic rod 11 and the side facing the movable ring 6 have a second guide surface 13.

[0023] When the hollow anchor rod 1 is inserted into the borehole, since each support plate 2 is located in the receiving groove 12, there is no resistance to the hollow anchor rod 1 entering the borehole. After the hollow anchor rod 1 is fully inserted into the borehole, cement mortar can be delivered into the interior of the hollow anchor rod 1. At this time, since the plug rod 9 is inserted into the through hole of the movable ring 6, the internal channel of the hollow anchor rod 1 is sealed, and the cement mortar will be continuously delivered into the interior of the hollow anchor rod 1. The pressure on the movable ring 6 will continue to increase, which will push the movable ring 6 to move in the internal channel of the hollow anchor rod 1. After the second inclined rod 8 contacts the first guide surface 5, the multiple magnetic suction rods 3 slide along the radial direction of the hollow anchor rod 1. As the movable ring 6 approaches the magnetic suction rods 3, the movable ring 6 will contact the second guide surface 13. When the elastic telescopic rod 11 is touched and subjected to pressure, it will contract, and eventually the movable ring 6 will pass over the elastic telescopic rod 11. After that, the movable end of the elastic telescopic rod 11 will return to its original position under the elastic force. However, due to the obstruction of the movable end of the elastic telescopic rod 11, the movable ring 6 cannot return to its original position. Therefore, the multiple support plates 2 can only remain in the extended state and are in contact with the borehole. After the cement mortar fills the gap between the borehole and the hollow anchor rod 1, the hollow anchor rod 1 will not sink. The cement mortar can be evenly distributed on the outside of the hollow anchor rod 1, which helps to improve the support strength of the roadway. After the cement mortar solidifies, under the combined action of the multiple support plates 2 and the multiple connecting rods 4, the firmness of the connection between the hollow anchor rod 1 and the cement mortar can also be improved.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A support anchor bolt, characterized in that, The device includes multiple support plates (2) arranged on the outside of the hollow anchor rod (1). The multiple support plates (2) are evenly distributed in the circumferential direction of the hollow anchor rod (1). Multiple receiving grooves (12) for accommodating the support plates (2) are opened on the outer surface of the hollow anchor rod (1). Multiple magnetic rods (3) are arranged inside the hollow anchor rod (1). The multiple magnetic rods (3) correspond one-to-one with the multiple support plates (2). The magnetic rods (3) are fixedly connected to the support plates (2) through connecting rods (4). The connecting rods (4) penetrate the interior of the hollow anchor rod (1) and are slidably connected to the hollow anchor rod (1). The hollow anchor rod (1) has a plug rod (9) fixedly installed inside by a fixing frame (10). The hollow anchor rod (1) also has a movable ring (6) inside. The inner side of the movable ring (6) has a through hole that matches the plug rod (9). Multiple first inclined rods (7) are fixedly installed on the movable ring (6). Each magnetic rod (3) has a first guide surface (5) at one end. One end of the first inclined rod (7) is in contact with the first guide surface (5). A second inclined rod (8) is fixedly installed on each first inclined rod (7). An elastic telescopic rod (11) is fixedly installed inside the hollow anchor rod (1). A second guide surface (13) is provided on the movable end of the elastic telescopic rod (11) facing the movable ring (6).

Images