Roadway grouting anchor rod

Abstract

The invention discloses a roadway grouting anchor rod, and relates to the technical field of anchor rods, and the roadway grouting anchor rod is technically characterized by comprising a rod body, a plurality of fixing rings are mounted in the length direction of the rod body at equal intervals, a plurality of through holes are formed in the circumferential direction of each fixing ring at equal intervals, and a movable insertion rod is slidably mounted in each through hole; a fixed plate is fixedly mounted at one end of each movable insertion rod, an elastic part is fixedly mounted between each fixed plate and the inner surface of the rod body, and an inclined surface is formed on each movable insertion rod; a plurality of movable rings are arranged in the rod body, the movable rings and the fixed rings are arranged in a one-to-one correspondence mode, every two adjacent movable rings are fixedly connected through a connecting rod, a limiting ring is installed in the rod body in a sliding mode, the limiting ring is fixedly connected with one end of the connecting rod, and a threaded ring is rotatably installed at one end of the limiting ring; the threaded ring is arranged at one end of the rod body, the threaded ring is in threaded connection with the rod body, the rod body cannot slide out of the hole, and the rod body is easier and more convenient to install.

Description

Technical Field

[0001] This invention relates to the field of anchor bolt technology, specifically to a grouting anchor bolt for roadways. Background Technology

[0002] In mining operations, the stability of roadways is of paramount importance. During the excavation process, the original stress state of the surrounding rock mass is disrupted, leading to deformation, loosening, or even collapse of the surrounding rock. To ensure the safe use of roadways, effective support is required.

[0003] The most common way to improve the strength of roadways is through grouting anchor bolts. After drilling holes in the roadway, anchor bolts are inserted into the holes and grout is injected into the anchor bolts to fill the holes. However, some holes in the roadway have downward-facing openings. After the anchor bolts and grout are sent into the holes, tools are needed to stabilize the anchor bolts, which increases the difficulty of installation. Therefore, in order to solve the above technical problems, this invention provides a roadway grouting anchor bolt. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a roadway grouting anchor bolt.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a roadway grouting anchor bolt, comprising a rod body, wherein a plurality of fixing rings are fixedly installed at equal intervals along the length direction of the rod body, and a plurality of through holes are equally spaced along the circumference direction of each fixing ring, wherein a movable insert rod is slidably installed in each through hole, a fixing plate is fixedly installed on one end of each movable insert rod, an elastic element is fixedly installed between each fixing plate and the inner surface of the rod body, and an inclined surface is provided on each movable insert rod; The rod body has multiple movable rings inside, and each movable ring corresponds to a fixed ring. Adjacent movable rings are fixedly connected by a connecting rod. A limit ring is slidably installed inside the rod body. The limit ring is fixedly connected to one end of the connecting rod. A threaded ring is rotatably installed on one end of the limit ring. The threaded ring is located at one end of the rod body and is threadedly connected to the rod body.

[0006] Preferably, multiple fixing rods are fixedly installed on both sides of the fixing ring.

[0007] Preferably, the elastic element is a spring.

[0008] Preferably, a slider is fixedly installed on the outer surface of the limiting ring, and a slide rail is provided inside the rod body for the slider to slide.

[0009] Compared with the prior art, the present invention provides a grouting anchor bolt for roadways, which has the following beneficial effects: Multiple movable inserts are slidably mounted on the rod body. An elastic element is fixedly installed between each fixed plate and the inner surface of the rod body. Each movable insert has an inclined surface. Multiple movable rings are set inside the rod body. Adjacent movable rings are fixedly connected by a connecting rod. A limit ring is slidably mounted inside the rod body. The limit ring is fixedly connected to one end of the connecting rod. A threaded ring is rotatably mounted on one end of the limit ring. The threaded ring is threadedly connected to the rod body. This allows the ends of multiple movable inserts to be inserted into the inner wall of the hole, fixing the rod body inside the hole. Even if the hole opening is downward, the rod body will not slide out of the hole. No other tools are needed to assist in fixing the rod body. The installation of the rod body is simpler and more convenient. After fixing, the rod body is located in the center of the hole, and the injected slurry can be evenly distributed around the rod body.

[0010] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it according to the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Specific embodiments of the present invention are given in detail below with reference to the accompanying drawings. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic cross-sectional view of the rod in this invention; Figure 3 This is a schematic diagram of the disassembled structure of the fixed ring and the movable insert rod in this invention; Figure 4 This is a schematic diagram of the structure of the movable ring, connecting rod, limiting ring, threaded ring, and slider in this invention.

[0012] In the diagram: 1. Rod; 2. Fixed ring; 3. Movable insert rod; 4. Spring; 5. Inclined surface; 6. Fixed plate; 7. Through hole; 8. Fixed rod; 9. Movable ring; 10. Connecting rod; 11. Limiting ring; 12. Threaded ring; 13. Slider. Detailed Implementation

[0013] The following is in conjunction with the appendix Figures 1 to 4 The principles and features of the present invention are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention 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 in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0014] 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.

[0015] 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 in the description of the invention 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.

[0016] Please combine Figures 1 to 4 As shown, the present invention provides a grouting anchor bolt for roadways. The grouting anchor bolt includes a rod body 1. Multiple fixing rings 2 are fixedly installed at equal intervals along the length direction of the rod body 1. Multiple through holes 7 are opened at equal intervals along the circumference direction of each fixing ring 2. A movable insert rod 3 is slidably installed in each through hole 7. A fixing plate 6 is fixedly installed on one end of each movable insert rod 3. A spring 4 is fixedly installed between each fixing plate 6 and the inner surface of the rod body 1. An inclined surface 5 is opened on each movable insert rod 3. The rod body 1 has multiple movable rings 9 inside, and each movable ring 9 is corresponding to a fixed ring 2. Adjacent movable rings 9 are fixedly connected by a connecting rod 10. The rod body 1 has a limit ring 11 inside, and a slider 13 is fixedly installed on the outer surface of the limit ring 11. The rod body 1 has a slide rail for the slider 13 to slide on. The limit ring 11 is fixedly connected to one end of the connecting rod 10. A threaded ring 12 is rotatably installed on one end of the limit ring 11. The threaded ring 12 is located at one end of the rod body 1 and is threadedly connected to the rod body 1. After the hole in the tunnel is opened, the rod 1 is inserted into the hole, and then the threaded ring 12 is rotated to make the limiting ring 11 slide along the length of the rod 1. During the movement of the multiple movable rings 9, the movable rings 9 will contact the inclined surface 5, pushing the movable insert rod 3 to slide inside the through hole 7. The ends of the multiple movable insert rods 3 will extend to the outside of the fixed ring 2, and the ends of the multiple movable insert rods 3 will be inserted into the inner wall of the hole, fixing the rod 1 in the hole. Even if the hole opening is downward, the rod 1 will not slide out of the hole, and no other tools are needed to assist in fixing the rod 1. The installation of the rod 1 is simpler and more convenient. After the fixed rod 1 is located in the center of the hole, after the grouting equipment injects grout into the hole, the grout around the rod 1 is more evenly distributed, and the rod 1 will not be supported in the hole, resulting in uneven grout distribution. Multiple fixing rods 8 are fixedly installed on both sides of the fixed ring 2, which can increase the firmness of the rod 1 after the grout solidifies.

[0017] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Those skilled in the art can readily implement the present invention 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 present invention, utilizing the disclosed technical content, are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A grouting anchor bolt for roadways, characterized in that, The rod includes a rod body (1), and multiple fixing rings (2) are fixedly installed at equal intervals along the length direction of the rod body (1). Multiple through holes (7) are opened at equal intervals along the circumference of each fixing ring (2). A movable insert rod (3) is slidably installed in each through hole (7). A fixing plate (6) is fixedly installed on one end of each movable insert rod (3). An elastic element is fixedly installed between each fixing plate (6) and the inner surface of the rod body (1). An inclined surface (5) is opened on each movable insert rod (3). The rod body (1) is provided with multiple movable rings (9) inside, and multiple movable rings (9) are provided in correspondence with multiple fixed rings (2). Two adjacent movable rings (9) are fixedly connected by a connecting rod (10). A limiting ring (11) is slidably installed inside the rod body (1). The limiting ring (11) is fixedly connected to one end of the connecting rod (10). A threaded ring (12) is rotatably installed on one end of the limiting ring (11). The threaded ring (12) is located at one end of the rod body (1) and is threadedly connected to the rod body (1).

2. The roadway grouting anchor bolt according to claim 1, characterized in that: Multiple fixing rods (8) are fixedly installed on both sides of the fixing ring (2).

3. The roadway grouting anchor bolt according to claim 1, characterized in that: The elastic element is a spring (4).

4. A roadway grouting anchor bolt according to claim 1, characterized in that: A slider (13) is fixedly installed on the outer surface of the limiting ring (11), and a slide rail for sliding the slider (13) is provided inside the rod (1).

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