Grouting anchor rod with hole sealing device

Abstract

The utility model relates to the technical field of anchor rod supporting, and discloses a grouting anchor rod with a hole sealing device. The grouting anchor rod with the hole sealing device comprises an anchor rod body and the hole sealing device, the anchor rod body comprises a rod body, the rod body is used for being arranged in an anchor rod hole, the hole sealing device comprises an expansion piece and a filling block, the expansion piece is arranged on the periphery of the rod body in a sleeving mode and can slide in the axial direction of the rod body, the filling block is fixedly connected with the rod body, and a filling space is formed between the expansion piece and the rod body. And when the expansion piece slides, the filling block can enter the filling space to enable the expansion piece to expand, so that a gap between the rod body and the anchor rod hole is blocked. The expansion piece can move along the rod body, the filling block is fixedly connected with the rod body, in the process that the expansion piece moves towards the filling block, the filling block can enter the filling space to enable the expansion piece to expand, after the expansion piece expands, the outer diameter of the expansion piece is increased, a gap between the rod body and the anchor rod hole is blocked, and grout is not prone to leaking out of the anchor rod hole.

Description

Technical Field

[0001] The utility model relates to the technical field of anchor rod support, in particular to a grouting anchor rod with a hole sealing device. Background Art

[0002] During underground mining, grouting anchors are needed to support the tunnel surrounding rock, strengthen the integrity and strength of the surrounding rock, and improve the safety of the tunnel. When constructing grouting anchors, it is necessary to first construct anchor holes, then install grouting anchors in the anchor holes, and finally inject grout into the tunnel surrounding rock through the grouting anchors.

[0003] Since there is a certain gap between the grouting anchor and the anchor hole, and grouting is generally carried out under pressure, the grouting liquid is easy to flow out from the gap between the grouting anchor and the anchor hole after the grouting is completed. The outflow of grout not only causes environmental pollution in the tunnel, but also causes the grouting pressure to fail to meet the construction requirements, and the grouting anchor has a poor support effect on the tunnel surrounding rock. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the utility model proposes a grouting anchor rod with a sealing device, which can seal the gap between the rod body and the anchor rod hole, and is less likely to leak grout.

[0006] The grouting anchor with a sealing device in an embodiment of the utility model comprises an anchor and a sealing device, the anchor comprises a rod body, the rod body is used to be arranged in the anchor hole, the sealing device comprises an expansion piece and a filling block, the expansion piece is sleeved on the outer periphery of the rod body and can slide along the axial direction of the rod body, the filling block is fixedly connected to the rod body, a filling space is arranged between the expansion piece and the rod body, and when the expansion piece slides, the filling block can enter the filling space to make the expansion piece expand, so as to seal the gap between the rod body and the anchor hole.

[0007] In the grouting anchor with a sealing device in the embodiment of the utility model, the expansion piece can move along the rod body, and the filling block is fixedly connected to the rod body. During the movement of the expansion piece toward the filling block, the filling block can enter the filling space to cause the expansion piece to expand. After the expansion piece expands, the outer diameter becomes larger and seals the gap between the rod body and the anchor hole, and the slurry is not easy to leak out of the anchor hole.

[0008] In some embodiments, the sealing device includes a pushing member, and the anchor rod also includes a tray and a lock, the tray and the lock are arranged on the rod body, one end of the pushing member abuts against the expansion member, and the other end of the pushing member abuts against the tray, and the pushing member can move along the axial direction of the rod body to push the expansion member.

[0009] In some embodiments, the pushing member is a pushing tube, and the pushing tube is sleeved on the outer circumference of the rod body.

[0010] In some embodiments, a flange is provided at one end of the push tube close to the expansion member, and the flange is in contact with the expansion member.

[0011] In some embodiments, an annular protrusion is provided on the outer periphery of the expansion member.

[0012] In some embodiments, a plurality of the annular protrusions are provided, and the plurality of the annular protrusions are arranged at intervals.

[0013] In some embodiments, the outer diameter of the filling block gradually increases.

[0014] In some embodiments, the sealing device includes a stopper, the stopper is located on a side of the filling block away from the expansion member, and the stopper is fixedly connected to the rod body.

[0015] In some embodiments, the stopper is a clamp, and the clamp is fixed to the outer periphery of the rod body.

[0016] In some embodiments, the expansion member is made of rubber. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a grouting anchor rod with a sealing device according to an embodiment of the utility model.

[0018] Reference numerals:

[0019] 1. Anchor rod; 11. Rod body; 12. Tray; 13. Lock; 2. Expansion piece; 21. Filling space; 22. Annular protrusion; 3. Filling block; 31. Conical surface; 4. Pushing piece; 41. Flange; 5. Stopper. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0021] like Figure 1As shown, the grouting anchor with a sealing device in the embodiment of the utility model comprises an anchor 1 and a sealing device, wherein the anchor 1 comprises a rod body 11, and the rod body 11 is used to be arranged in the anchor hole. Specifically, the anchor 1 further comprises a tray 12 and a lock 13, and a grouting pipe is arranged inside the rod body 11, and the grouting pipe is used to grout into the broken surrounding rock area. The tray 12 and the lock 13 are used to apply prestress to the anchor 1.

[0022] The sealing device includes an expansion piece 2 and a filling block 3. The expansion piece 2 is sleeved on the outer periphery of the rod body 11 and can slide along the axial direction of the rod body 11. The filling block 3 is fixedly connected to the rod body 11. A filling space 21 is provided between the expansion piece 2 and the rod body 11. When the expansion piece 2 slides, the filling block 3 can enter the filling space 21 to expand the expansion piece 2, so as to seal the gap between the rod body 11 and the anchor hole.

[0023] Specifically, the inner wall of the expansion member 2 away from the filling block 3 contacts the rod body 11, and a filling space 21 is formed between the inner wall of the expansion member 2 close to the filling block 3 and the rod body 11. The expansion member 2 can be made of rubber or deformable plastic. When the expansion member 2 moves toward the filling block 3, the filling block 3 can enter the filling space 21 to expand the expansion member 2. After the expansion member 2 expands, the outer diameter becomes larger to achieve the effect of blocking the gap.

[0024] In the grouting anchor with a sealing device in the embodiment of the utility model, the expansion piece can move along the rod body, and the filling block is fixedly connected to the rod body. During the movement of the expansion piece toward the filling block, the filling block can enter the filling space to cause the expansion piece to expand. After the expansion piece expands, the outer diameter becomes larger and seals the gap between the rod body and the anchor hole, and the slurry is not easy to leak out of the anchor hole.

[0025] In some embodiments, Figure 1 As shown, the sealing device includes a pushing member 4, and the anchor rod 1 also includes a tray 12 and a lock 13. The tray 12 and the lock 13 are arranged on the rod body 11. One end of the pushing member 4 stops against the expansion member 2, and the other end of the pushing member 4 stops against the tray 12, and the pushing member 4 can move along the axial direction of the rod body 11 to push the expansion member 2.

[0026] Specifically, the pusher 4 can be made of metal, such as stainless steel. The pusher 4 can be driven to move during the process of tightening the lock 13, and the pusher 4 can push the expansion member 2 toward the filling block 3 to achieve the effect of sealing the hole, which is more convenient during use.

[0027] In some embodiments, Figure 1 As shown, the push member 4 is a push tube, which is sleeved on the outer periphery of the rod body 11. A flange 41 is provided at one end of the push tube close to the expansion member 2, and the flange 41 contacts the expansion member 2.

[0028] Specifically, the inner diameter of the push tube is larger than the outer diameter of the rod body 11, and the push tube can slide along the rod body 11. The length of the push tube can be determined according to the position of the sealing hole, that is, the position of the filling block 3. The flange 41 can increase the contact area between the push tube and the expansion member 2, and the push tube is not easy to damage the expansion member 2 when pushing it.

[0029] In some embodiments, Figure 1 As shown, an annular protrusion 22 is provided on the outer periphery of the expansion member 2. A plurality of annular protrusions 22 are provided, and the plurality of annular protrusions 22 are arranged at intervals. The material of the annular protrusion 22 is a deformable rubber, and the provision of the annular protrusion 22 can increase the sealing effect between the expansion member 2 and the anchor hole.

[0030] In some embodiments, Figure 1 As shown, the outer diameter of the filling block 3 gradually increases. Specifically, the outer peripheral surface of the filling block 3 can be a conical surface 31. As the expansion member 2 moves, the length of the filling block 3 entering the filling space 21 gradually increases. At the same time, since the outer periphery of the filling block 3 is a conical surface 31, the outer diameter of the expansion member 2 is gradually expanded. The above arrangement enables the expansion member 2 to be applicable to anchor holes with various inner diameter sizes.

[0031] After the construction of the grouting anchor rod with a sealing device in the embodiment of the utility model is completed, under the pressure of the slurry, the filling block 3 can further move toward the expansion member 2, so that the expansion member 2 continues to expand to seal the gap, which has the advantages of good sealing performance and is not prone to leakage.

[0032] In some embodiments, Figure 1 As shown, the sealing device includes a stopper 5, which is located on the side of the filling block 3 away from the expansion member 2, and the stopper 5 is fixedly connected to the rod body 11. The stopper 5 is a clamp, which is fixed to the outer periphery of the rod body 11. The connection between the clamp and the rod body 11 is a detachable connection, which is convenient for adjusting the position of the sealing hole according to actual needs.

[0033] In other embodiments, the stopper 5 may also be a retaining ring fixed to the rod body 11 by welding.

[0034] In some embodiments, Figure 1 As shown, the material of the expansion member 2 is rubber. Rubber has good deformation ability and good corrosion resistance, and has good sealing effect when used as the expansion member 2.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0040] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A grouting anchor with a sealing device, characterized in that: The invention comprises an anchor rod and a sealing device, wherein the anchor rod comprises a rod body, and the rod body is used to be arranged in the anchor rod hole. The sealing device comprises an expansion piece and a filling block, wherein the expansion piece is sleeved on the outer periphery of the rod body and can slide along the axial direction of the rod body, the filling block is fixedly connected to the rod body, a filling space is arranged between the expansion piece and the rod body, and when the expansion piece slides, the filling block can enter the filling space to make the expansion piece expand, so as to seal the gap between the rod body and the anchor rod hole.

2. The grouting anchor with a sealing device according to claim 1, characterized in that: The sealing device includes a pushing member, and the anchor rod also includes a tray and a lock, the tray and the lock are arranged on the rod body, one end of the pushing member abuts against the expansion member, the other end of the pushing member abuts against the tray, and the pushing member can move along the axial direction of the rod body to push the expansion member.

3. The grouting anchor with a sealing device according to claim 2, characterized in that: The pushing member is a pushing tube, and the pushing tube is sleeved on the outer periphery of the rod body.

4. The grouting anchor with a sealing device according to claim 3, characterized in that: A flange is arranged at one end of the push tube close to the expansion member, and the flange contacts the expansion member.

5. The grouting anchor with a sealing device according to claim 1, characterized in that: An annular protrusion is arranged on the outer periphery of the expansion member.

6. The grouting anchor with a sealing device according to claim 5, characterized in that: There are multiple annular protrusions, and the multiple annular protrusions are arranged at intervals.

7. The grouting anchor with a sealing device according to claim 1, characterized in that: The outer diameter of the filling block gradually increases.

8. The grouting anchor with a sealing device according to claim 1, characterized in that: The hole sealing device comprises a stopper, which is located on a side of the filling block away from the expansion member, and the stopper is fixedly connected to the rod body.

9. The grouting anchor with a sealing device according to claim 8, characterized in that: The stopper is a clamp, and the clamp is fixed on the outer periphery of the rod body.

10. The grouting anchor with a sealing device according to any one of claims 1 to 9, characterized in that: The expansion piece is made of rubber.

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