A multi-stage hydraulic expansion soft rock anchor

Abstract

This utility model discloses a multi-segment hydraulic expansion soft rock anchor bolt, relating to the field of building fixing technology. It includes a first anchor bolt body and a second anchor bolt body. Both the first and second anchor bolt bodies have welded-on inner tubes. A positioning block is slidably installed on the inner side of the second anchor bolt body, and an outer ring is slidably installed on its surface. In this multi-segment hydraulic expansion soft rock anchor bolt, when the operator releases the outer ring, the outer ring, through its own inclined surface and the elastic force of the compressed elastic component, pushes the inclined surface of the positioning block back to its original position. This allows the positioning block to enter the inner wall of the positioning groove on the inner tube for positioning and assembly. This method ensures the ease of assembly of the multi-segment first or second anchor bolt body, and thus ensures the convenience of assembly and use when the first and second anchor bolt bodies are hydraulically expanded in soft rock.

Description

Technical Field

[0001] This utility model relates to the field of fixed building technology, and in particular to a multi-segment hydraulic expansion soft rock anchor. Background Technology

[0002] With the continuous development of anchor reinforcement technology, anchors have been increasingly widely used in foundation pit engineering, slope protection engineering and tunnel engineering, playing an important role in engineering construction and construction safety.

[0003] Most existing multi-segment hydraulic expandable soft rock anchors are designed to accommodate rock cavities of varying lengths to achieve the desired depth. While most of these anchors offer good stability during assembly, some employ threaded assembly, which can lead to inaccurate thread alignment and necessitates repeated assembly and adjustment. This results in time-consuming and labor-intensive assembly of multi-segment hydraulic expandable soft rock anchors. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to solve the problems raised in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-segment hydraulic expansion soft rock anchor bolt, comprising a first anchor bolt body and a second anchor bolt body, wherein the surfaces of the first anchor bolt body and the second anchor bolt body are welded and installed with connecting inner tubes, a positioning block is slidably installed on the inner side of the second anchor bolt body, an outer ring is slidably installed on the surface of the second anchor bolt body, and an elastic component is slidably sleeved on the surface of the second anchor bolt body, with the two ends of the elastic component respectively abutting and installed on the opposite sides of the outer ring and the second anchor bolt body.

[0006] Preferably, the two sets of docking inner tubes are provided with the same positioning groove, and the surface of the positioning block is slidably installed on the inner wall of the positioning groove on the docking inner tube.

[0007] Preferably, the positioning block and the positioning groove are both frustum-shaped, and the outer ring and the adjacent sides of the positioning block are both inclined surfaces.

[0008] Preferably, sealing rings are provided on opposite sides of the first anchor body and the second anchor body, and the inner side of the sealing rings is slidably installed on the surface of the connecting inner tube.

[0009] Preferably, a positioning plate is slidably mounted on the surface of the first anchor body, and a positioning nut is threaded onto the surface of the first anchor body.

[0010] Preferably, there are two sets of positioning plates, and buffer springs are provided on opposite sides of the two sets of positioning plates. The inner side of the buffer springs is slidably installed on the surface of the first anchor body.

[0011] Preferably, the inner side of the outer ring abuts against the outer side of the positioning block, and the upper and lower sides of the sealing ring abut against the opposite sides of the first anchor body and the second anchor body.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) In this multi-segment hydraulic expansion soft rock anchor, the operator releases the outer ring, and the outer ring pushes the inclined surface of the positioning block to reset by the elastic force of the compressed elastic component through its own inclined surface. This allows the positioning block to enter the inner wall of the positioning groove on the docking inner tube for positioning and assembly. This method ensures the ease of assembly operation of the multi-segment first anchor or second anchor body, and ensures the convenience of assembly and use when the first and second anchor bodies are hydraulically expanded in soft rock. It improves the disadvantage of the traditional threaded assembly of the first and second anchor bodies, which has the disadvantage of inaccurate fastening and the need for repeated assembly and adjustment, and reduces the disadvantage of the time-consuming and laborious use of threaded assembly of the first and second anchor bodies. This improves the efficiency of multi-segment assembly operation between the first and second anchor bodies. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a schematic diagram of the structure of a multi-segment hydraulic expansion soft rock anchor of this utility model;

[0016] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;

[0017] Figure 3 This is a schematic diagram of the planar cutting structure of a multi-segment hydraulic expansion soft rock anchor rod according to the present invention.

[0018] Reference numerals in the attached drawings: 1. First anchor bolt body; 2. Second anchor bolt body; 3. Positioning support plate; 4. Positioning nut; 5. Buffer spring; 6. Connecting inner tube; 7. Positioning groove; 8. Positioning block; 9. Outer ring; 10. Elastic component; 11. Sealing ring. Detailed Implementation

[0019] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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.

[0021] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] Please see Figure 1-3 This utility model provides a technical solution: a multi-segment hydraulic expansion soft rock anchor bolt, including a first anchor bolt body 1 and a second anchor bolt body 2. A positioning plate 3 is slidably installed on the surface of the first anchor bolt body 1, and a positioning nut 4 is threadedly installed on the surface of the first anchor bolt body 1. The function of the positioning nut 4 is to limit the installation of the positioning plate 3.

[0024] Furthermore, there are two sets of positioning plates 3. Buffer springs 5 ​​are provided on opposite sides of the two sets of positioning plates 3. The inner side of the buffer springs 5 ​​is slidably installed on the surface of the first anchor body 1. By providing buffer springs 5 ​​at the two sets of positioning plates 3, the first anchor body 1 can be buffered by the pressure relief effect of the buffer springs 5 ​​when it is subjected to deformation of the surrounding rock after the first anchor body 1 is installed in the hydraulic expansion soft rock hole.

[0025] Furthermore, both the first anchor body 1 and the second anchor body 2 are welded and installed with connecting inner tubes 6. Both sets of connecting inner tubes 6 are provided with the same positioning grooves 7. A positioning block 8 is slidably installed on the inner side of the second anchor body 2. An outer ring 9 is slidably installed on the surface of the second anchor body 2. An elastic component 10 is slidably sleeved on the surface of the second anchor body 2. The two ends of the elastic component 10 are respectively abutted and installed on the opposite sides of the outer ring 9 and the second anchor body 2. The surface of the positioning block 8 is slidably installed on the inner wall of the positioning groove 7 on the connecting inner tube 6. The positioning block 8 and the positioning groove 7 are both frustum-shaped. The adjacent sides of the outer ring 9 and the positioning block 8 are both inclined surfaces.

[0026] Furthermore, when assembling multiple sections of the first anchor bolt 1 or the second anchor bolt 2, only the inner connecting tube 6 on the first anchor bolt 1 needs to align with the inner side of the second anchor bolt 2. At this point, the operator manually controls the outer ring 9 to compress the elastic component 10, causing it to contract. Therefore, the outer ring 9 no longer obstructs the positioning block 8. The inner connecting tube 6 on the first anchor bolt 1 then pushes the inclined surface of the positioning block 8, causing the positioning block 8 to move outward from the inner side of the second anchor bolt 2 until the first anchor bolt 1 and the second anchor bolt 2 are aligned. After this, the operator releases the outer ring 9, which, through its own inclined surface and the elasticity of the compressed elastic component 10, pushes the outer ring... 9. Push the inclined surface of the positioning block 8 to reset, thereby realizing the positioning block 8 entering the inner wall of the positioning groove 7 on the docking inner tube 6 for positioning and assembly. This method ensures the ease of assembly operation of multiple sections of the first anchor body 1 or the second anchor body 2, and thus ensures the convenience of assembly and use when the first anchor body 1 and the second anchor body 2 are hydraulically expanded in soft rock. It improves the disadvantage of the traditional threaded assembly of the first anchor body 1 and the second anchor body 2, which has the disadvantage of inaccurate fastening and requires repeated assembly and adjustment, and reduces the disadvantage of the time-consuming and laborious disadvantage of using threaded assembly of the first anchor body 1 and the second anchor body 2, thereby improving the efficiency of multi-section assembly operation between the first anchor body 1 and the second anchor body 2.

[0027] Furthermore, a sealing ring 11 is provided on the opposite side of the first anchor body 1 and the second anchor body 2. The inner side of the sealing ring 11 is slidably installed on the surface of the connecting inner tube 6. By providing the sealing ring 11 at the joint of the first anchor body 1 and the second anchor body 2, the sealing effect after the first anchor body 1 and the second anchor body 2 are joined can be improved.

[0028] Working principle: A multi-segment hydraulic expansion soft rock anchor bolt, when assembled by multiple segments of the first anchor bolt body 1 or the second anchor bolt body 2, only requires the docking inner tube 6 on the first anchor bolt body 1 to align with the inner side of the second anchor bolt body 2. At this time, the operator controls the outer ring 9 to compress the elastic component 10 to form a contraction, so the outer ring 9 no longer obstructs the positioning block 8. At this time, the docking inner tube 6 on the first anchor bolt body 1 pushes the inclined surface of the positioning block 8, causing the positioning block 8 to move outward from the inner side of the second anchor bolt body 2 until the first anchor bolt body 1 and the second anchor bolt body 2 are aligned. Then, the operator releases the outer ring 9, and the outer ring 9, through its own inclined surface and with the help of the elasticity of the compressed elastic component 10, pushes the inclined surface of the positioning block 8 back to its original position, thereby realizing the positioning block 8 entering the inner wall of the positioning groove 7 on the docking inner tube 6 for positioning and assembly.

[0029] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A multi-stage hydraulic expansion soft rock anchor rod comprising a first anchor rod body (1) and a second anchor rod body (2), characterized in that: The first anchor body (1) and the second anchor body (2) are both welded with inner tubes (6), the second anchor body (2) is slidably installed with a positioning block (8), the second anchor body (2) is slidably installed with an outer ring (9), and the second anchor body (2) is slidably fitted with an elastic component (10). The two ends of the elastic component (10) are respectively abutted against the outer ring (9) and the opposite side of the second anchor body (2).

2. A multi-stage hydraulic expansion soft rock anchor according to claim 1, characterized in that: Both sets of docking inner tubes (6) are provided with the same positioning groove (7), and the surface of the positioning block (8) is slidably installed on the inner wall of the positioning groove (7) on the docking inner tube (6).

3. A multi-stage hydraulic expansion soft rock bolt according to claim 2, characterised in that: The positioning block (8) and the positioning groove (7) are both frustum-shaped, and the outer ring (9) and the adjacent sides of the positioning block (8) are both inclined surfaces.

4. A multi-segment hydraulic expansion soft rock anchor bolt according to claim 1, characterized in that: A sealing ring (11) is provided on the opposite side of the first anchor body (1) and the second anchor body (2), and the inner side of the sealing ring (11) is slidably installed on the surface of the docking inner tube (6).

5. A multi-stage hydraulic expansion soft rock bolt according to claim 1, wherein: The first anchor body (1) is slidably mounted with a positioning plate (3), and the first anchor body (1) is threadedly mounted with a positioning nut (4).

6. A multi-stage hydraulic expansion soft rock bolt according to claim 5, wherein: The number of positioning plates (3) is two sets, and buffer springs (5) are provided on opposite sides of the two sets of positioning plates (3). The inner side of the buffer springs (5) is slidably installed on the surface of the first anchor body (1).

7. A multi-segment hydraulic expansion soft rock anchor bolt according to claim 4, characterized in that: The inner side of the outer ring (9) is abutted against the outer side of the positioning block (8), and the upper and lower sides of the sealing ring (11) are abutted against the opposite sides of the first anchor body (1) and the second anchor body (2).

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