A connecting assembly of high rock-burst-resistant serpentine anchor rod

Abstract

The utility model discloses a high anti -rock burst snakelike anchor rod's connecting assembly belongs to anchor rod connection field. A high anti -rock burst snakelike anchor rod's connecting assembly, include: the connecting sleeve pipe of connecting between two snakelike anchor rod bodies, be equipped with the support ring on the middle inner wall of connecting sleeve pipe, annular connecting piece is connected in the end of snakelike anchor rod body, limit block is slidably arranged in annular connecting piece, and be equipped with the inclined plane on the limit block, annular groove is set up on connecting sleeve pipe, when the limit block is inserted into annular groove, the limit block and the inner wall of annular groove are in abutment, the utility model discloses after bearing compound dynamic stress, will not appear slippage or loosening, can guarantee the use effect of anchor rod whole, reach the effect of buffering energy absorption, avoid the occurrence of the safety accidents such as surrounding rock collapse and roof fall.

Description

Technical Field

[0001] This utility model relates to the field of anchor bolt connection technology, and in particular to a connection component for a high rockburst resistant serpentine anchor bolt. Background Technology

[0002] Snake-shaped anchors are extendable support components designed for rockburst conditions. Their rods adopt a continuous wave-shaped or spiral structure, which can absorb the impact energy of rockbursts through tensile deformation, avoiding anchor breakage or support failure. They are one of the core active support equipment in high-stress geotechnical engineering. Due to processing, transportation and construction limitations, the length of a single snake-shaped anchor is usually only 1-3m, which cannot meet the anchoring depth requirements of 3-10m for deep-buried projects. Therefore, multiple snake-shaped anchors need to be spliced ​​into a whole by connecting components.

[0003] In the prior art, although the connecting components of serpentine anchors can achieve splicing of multiple sections, their core defect is the lack of a locking structure. Under high ground stress conditions with frequent rockbursts, this defect can lead to serious support failure risks: when a rockburst occurs, the serpentine anchor is subjected to complex dynamic stress, and under repeated impact and deformation, it is very easy to slip or loosen, resulting in the destruction of the overall continuity of the anchor and the loss of the energy absorption and buffering effect of the serpentine structure, which in turn can lead to safety accidents such as surrounding rock collapse and roof fall. In view of this, this utility model is proposed. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a connection component for a high rockburst serpentine anchor bolt.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A connection assembly for a high rockburst-resistant serpentine anchor bolt includes: A connecting sleeve is connected between two serpentine anchor bodies, and a support ring is provided on the middle inner wall of the connecting sleeve; A ring-shaped connecting block is attached to the end of the serpentine anchor bolt body; A limiting block is slidably disposed within an annular connecting block, and the limiting block is provided with an inclined surface; An annular groove is provided on the connecting sleeve. When the limiting block is inserted into the annular groove, the limiting block abuts against the inner wall of the annular groove.

[0006] Preferably, both ends of the serpentine anchor body are integrally formed with threaded tubes, and a connecting tube is provided on the end of the threaded tube away from the serpentine anchor body, and the annular connecting block is threadedly connected to the connecting tube.

[0007] Furthermore, the outer wall of the threaded tube is threadedly connected to the inner wall of the connecting sleeve.

[0008] Furthermore, the annular connecting block is provided with a groove, and the connecting pipe is threadedly connected to the inner wall of the groove.

[0009] Preferably, the annular connecting block has a cavity, a sliding plate is slidably connected inside the cavity, the limiting block is connected to the sliding plate, and an elastic element is provided between the sliding plate and the inner wall of the cavity.

[0010] Furthermore, an adjusting rod is threaded onto the connecting sleeve, and a push plate is provided on one end of the adjusting rod that is placed in the annular groove, while a knob is provided on the other end of the adjusting rod that is away from the push plate.

[0011] Furthermore, both the limiting block and the adjusting rod are provided with four circumferentially distributed components.

[0012] Compared with the prior art, this utility model provides a connection component for a high-resistance rockburst serpentine anchor bolt, which has the following beneficial effects: 1. The connection component of this high rockburst serpentine anchor bolt, after the serpentine anchor bolt body is connected into the connecting sleeve, the limiting block can lock with the connecting sleeve, so that the serpentine anchor bolt body will not move again, improving the stability of the connection, effectively achieving the support effect, and will not slip or loosen after being subjected to composite dynamic stress, ensuring the overall use effect of the anchor bolt, achieving the effect of buffering and absorbing energy, and avoiding the occurrence of safety accidents such as surrounding rock collapse and roof fall. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the connection assembly of a high rockburst resistant serpentine anchor bolt proposed in this utility model; Figure 2 This invention provides a schematic diagram of the structure in which the serpentine anchor body and the connecting sleeve are separated in a connection assembly for a high rockburst-resistant serpentine anchor. Figure 1 ; Figure 3 This invention provides a schematic diagram of the structure in which the serpentine anchor body and the connecting sleeve are separated in a connection assembly for a high rockburst-resistant serpentine anchor. Figure 2 ; Figure 4 This is a cross-sectional schematic diagram of the connecting sleeve in the connecting assembly of a high rockburst serpentine anchor bolt proposed in this utility model; Figure 5 This is a schematic diagram of the annular connecting block in the connecting assembly of a high rockburst serpentine anchor bolt proposed in this utility model; Figure 6 This utility model proposes a connection component for a high rockburst resistant serpentine anchor bolt. Figure 4 An enlarged schematic diagram of part A in the middle.

[0014] In the diagram: 1. Serpentine anchor body; 101. Threaded pipe; 102. Connecting pipe; 2. Connecting sleeve; 201. Support ring; 202. Annular groove; 3. Annular connecting block; 301. Groove; 302. Cavity; 303. Slide plate; 304. Limiting block; 305. Inclined surface; 306. Elastic element; 4. Adjusting rod; 401. Push plate; 402. Knob. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] Reference Figures 1-6 A connection assembly for a high rockburst resistant serpentine anchor bolt includes a connecting sleeve 2 connecting two serpentine anchor bolt bodies 1, with a support ring 201 on the middle inner wall of the connecting sleeve 2; an annular connecting block 3 is connected to the end of the serpentine anchor bolt body 1, with a limiting block 304 slidably disposed inside the annular connecting block 3, and an inclined surface 305 provided on the limiting block 304; an annular groove 202 is provided on the connecting sleeve 2, and when the limiting block 304 is inserted into the annular groove 202, the limiting block 304 abuts against the inner wall of the annular groove 202.

[0018] In this invention, during use, the annular connecting block 3 is first installed at the end of the serpentine anchor body 1, and then the serpentine anchor body 1 is connected into the connecting sleeve 2. At this time, under the action of the inclined surface 305, the limiting block 304 can move into the interior of the annular connecting block 3. At this time, the annular connecting block 3 can be better inserted into the connecting sleeve 2. When the limiting block 304 moves to correspond with the annular groove 202, the limiting block 304 will be inserted into the annular groove 202. At this time, a section of the flat surface on the limiting block 304 will abut against the inner wall of the annular groove 202. This ensures that the serpentine anchor body 1 will not fall off the connecting sleeve 2, thus improving the connection effect.

[0019] It should also be noted that the annular connecting block 3 is a separate component, which can be installed on the serpentine anchor body 1 during use, making it convenient for processing and installation.

[0020] Reference Figures 1-5Both ends of the serpentine anchor body 1 are integrally formed with threaded tubes 101. A connecting tube 102 is provided on the end of the threaded tube 101 away from the serpentine anchor body 1, and an annular connecting block 3 is threadedly connected to the connecting tube 102.

[0021] The outer wall of the threaded pipe 101 is threadedly connected to the inner wall of the connecting sleeve 2.

[0022] The annular connecting block 3 is provided with a groove 301, and the connecting pipe 102 is threadedly connected to the inner wall of the groove 301.

[0023] During installation, the threads on the inner wall of the groove 301 on the annular connecting block 3 are threaded to the threads on the connecting pipe 102, and the threaded pipe 101 is threaded to the inner wall of the connecting sleeve 2, thereby achieving a tight connection between the annular connecting block 3 and the serpentine anchor body 1, and between the serpentine anchor body 1 and the connecting sleeve 2. The threaded connection also facilitates installation and use.

[0024] Reference Figure 6 The annular connecting block 3 has a cavity 302, and a sliding plate 303 is slidably connected inside the cavity 302. A limiting block 304 is connected to the sliding plate 303, and an elastic element 306 is provided between the sliding plate 303 and the inner wall of the cavity 302.

[0025] In this utility model, when the serpentine anchor body 1 is rotated and threaded into the connecting sleeve 2, the limiting block 304 on the annular connecting block 3 first contacts the connecting sleeve 2. Under the action of the extrusion force and the inclined surface 305, the limiting block 304 can drive the sliding plate 303 to move into the cavity 302, and then the annular connecting block 3 can enter the interior of the connecting sleeve 2. When the limiting block 304 moves to the position corresponding to the annular groove 202, under the action of the elastic element 306, the limiting block 304 in the compressed state can automatically reset and insert into the annular groove 202. At this time, the flat section on the limiting block 304 will abut against the inner wall of the annular groove 202, thereby achieving locking and improving the connection effect. In this application, the elastic element 306 is specifically a spring or a spring sheet, etc.

[0026] Reference Figure 6 An adjusting rod 4 is threaded onto the connecting sleeve 2. One end of the adjusting rod 4, which is placed in the annular groove 202, is provided with a push plate 401. The other end of the adjusting rod 4, which is away from the push plate 401, is provided with a knob 402.

[0027] Both the limit block 304 and the adjusting rod 4 have four circumferentially distributed parts.

[0028] If it is necessary to disassemble the serpentine anchor body 1, turn the knob 402 to drive the adjusting rod 4 to rotate. The adjusting rod 4 is threadedly connected to the connecting sleeve 2, which will cause the push plate 401 to move, thereby pushing the limiting block 304 to move out of the annular groove 202. Then, rotate the serpentine anchor body 1 to rotate it out. There are four limiting blocks 304 and adjusting rods 4. Only when all seven adjusting rods 4 are rotated can the serpentine anchor body 1 be rotated out, further improving the stability of the connection.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A connection assembly for a high-resistance rockburst serpentine anchor bolt, characterized in that, include: A connecting sleeve (2) is connected between two serpentine anchor bodies (1), and a support ring (201) is provided on the middle inner wall of the connecting sleeve (2). The annular connecting block (3) is connected to the end of the serpentine anchor body (1); The limiting block (304) is slidably disposed within the annular connecting block (3), and the limiting block (304) is provided with an inclined surface (305). An annular groove (202) is provided on the connecting sleeve (2). When the limiting block (304) is inserted into the annular groove (202), the limiting block (304) abuts against the inner wall of the annular groove (202).

2. The connection assembly for a high rockburst-resistant serpentine anchor bolt according to claim 1, characterized in that, Both ends of the serpentine anchor body (1) are integrally formed with threaded tubes (101). A connecting tube (102) is provided on the end of the threaded tube (101) away from the serpentine anchor body (1). The annular connecting block (3) is threadedly connected to the connecting tube (102).

3. The connection assembly for a high rockburst-resistant serpentine anchor bolt according to claim 2, characterized in that, The outer wall of the threaded pipe (101) is threadedly connected to the inner wall of the connecting sleeve (2).

4. The connection assembly for a high rockburst-resistant serpentine anchor bolt according to claim 2, characterized in that, The annular connecting block (3) is provided with a groove (301), and the connecting pipe (102) is threadedly connected to the inner wall of the groove (301).

5. The connection assembly for a high rockburst-resistant serpentine anchor bolt according to claim 1, characterized in that, The annular connecting block (3) is provided with a cavity (302), and a sliding plate (303) is slidably connected in the cavity (302). The limiting block (304) is connected to the sliding plate (303), and an elastic element (306) is provided between the sliding plate (303) and the inner wall of the cavity (302).

6. The connection assembly for a high rockburst-resistant serpentine anchor bolt according to claim 5, characterized in that, The connecting sleeve (2) is threaded with an adjusting rod (4). The adjusting rod (4) is provided with a push plate (401) at one end placed in the annular groove (202), and a knob (402) is provided at the other end of the adjusting rod (4) away from the push plate (401).

7. The connection assembly for a high rockburst-resistant serpentine anchor bolt according to claim 6, characterized in that, Both the limiting block (304) and the adjusting rod (4) are provided with four circumferentially distributed parts.

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