External grouting device for anchor cable

Abstract

The utility model discloses an anchor cable external grouting device, and relates to the technical field of anchor cable grouting. Comprising a slurry guide pipe arranged in a drill hole, an anchor cable is detachably connected into the slurry guide pipe, an adjusting assembly is arranged on the side wall, extending into the drill hole, of the slurry guide pipe, the adjusting assembly is detachably connected with an inner sealing assembly, a conical sealing ring is arranged at the end, away from the adjusting assembly, of the inner sealing assembly, and the end, extending out of the drill hole, of the slurry guide pipe communicates with a grouting assembly. The end, extending out of the drill hole, of the anchor cable is detachably connected with an anchorage device, and the grouting assembly is arranged between the anchorage device and the outer wall of the drill hole. According to the utility model, rapid and efficient grouting is carried out through the grout guide pipe; the sealing assembly is arranged on the inner wall of the drill hole, the sealing assembly and the inner wall of the drill hole can be tightly attached and sealed through the adjusting assembly, separation between surrounding rock in the hole wall of the drill hole and the sealing assembly is effectively avoided, the sealing performance is effectively improved, meanwhile, grouting can be conducted through the grouting assembly, the situation of grout leakage can be avoided, and the engineering quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of anchor cable grouting, in particular to an anchor cable external grouting device. Background Art

[0002] During the excavation of underground tunnels in coal mines, the tunnels need to be supported to prevent the surrounding rock of the tunnels from being deformed or collapsed due to the influence of ground stress. The most commonly used method of support is the combined support of anchor cables and anchor rods. By applying preload force, the surrounding rock and bedrock are integrated to form an integral and stable rock belt around the tunnel. The purpose of maintaining the stability of the tunnel is achieved by using anchor rods and anchor cables to work together with the surrounding rock. However, the surrounding rock is often broken, and the combined support of anchor rods and anchor cables cannot make the surrounding rock form a whole. The metal mesh cannot hold the broken rock and the tunnel cannot be used normally. In this case, the current solution is to use hollow grouting anchor cables to inject grout into the rock body through the steel pipe in the middle of the anchor cable; however, the anchor cable needs to be tensioned for the second time 24 hours after the initial tensioning. At this time, the surrounding rock will delaminate to varying degrees due to the long time, affecting the quality of the project; at the same time, the surface of the rock is too broken and leakage will occur; therefore, there is an urgent need for an external grouting device for anchor cables, which is simple to operate, safe and reliable, flexible in construction, and does not affect the quality of the project. Utility Model Content

[0003] The utility model aims to provide an anchor cable external grouting device to solve the problems existing in the above-mentioned prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following solution: the utility model provides an external grouting device for an anchor cable, comprising a grouting pipe arranged in a borehole, the grouting pipe being detachably connected to an anchor cable, an adjusting component being arranged on the side wall of the grouting pipe extending into the borehole, the adjusting component being detachably connected to an inner sealing component, a conical sealing ring being arranged at one end of the inner sealing component away from the adjusting component, the end of the grouting pipe extending out of the borehole being connected to a grouting component, the end of the anchor cable extending out of the borehole being detachably connected to an anchor, and the grouting component being arranged between the anchor and the outer wall of the borehole.

[0005] Preferably, a plurality of slurry outlets are provided on the outer wall of the slurry guide pipe extending into the borehole.

[0006] Preferably, a limiting hole is provided at the bottom of the drill hole, and one end of the slurry guide pipe extends into the limiting hole.

[0007] Preferably, the outer diameter of the end of the conical sealing ring with a smaller outer diameter is smaller than the inner diameter of the limiting hole, and the outer diameter of the end of the conical sealing ring with a larger outer diameter is larger than the inner diameter of the limiting hole and smaller than the inner diameter of the drilled hole.

[0008] Preferably, the adjustment assembly includes a compression spring sleeved on the slurry guide pipe, and the two ends of the compression spring are respectively fixedly connected with an upper flange and a lower flange, the upper flange and the lower flange are sleeved on the slurry guide pipe, the upper flange is slidably connected to the slurry guide pipe, the end of the upper flange facing away from the compression spring is detachably connected to the inner sealing assembly, and the lower flange is fixedly connected to the slurry guide pipe.

[0009] Preferably, the inner sealing assembly includes a plurality of rubber sealing rings, which are sleeved on the slurry guiding pipe and slidably connected to the slurry guiding pipe, and the two rubber sealing rings at both ends are detachably connected to the conical sealing ring and the upper flange respectively.

[0010] Preferably, the grouting assembly includes a spherical pipe joint connected to the grouting pipe, the spherical pipe joint is fixedly connected and connected to a bent pipe, and one end of the spherical pipe joint facing the borehole is detachably connected to a tray, and the tray is fixedly connected to the side wall outside the borehole.

[0011] Preferably, a plum blossom rubber ring is provided between the spherical pipe joint and the anchor.

[0012] The utility model discloses the following technical effects:

[0013] The utility model performs fast and efficient grouting through a grouting pipe; and can make the sealing component tightly fit and seal with the inner wall of the borehole through an adjusting component, effectively avoiding delamination between the surrounding rock in the borehole wall and the sealing component, and effectively improving the sealing performance. At the same time, the grouting component can not only perform grouting, but also avoid leakage of grout, thereby improving the quality of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the structure of the utility model in a drill hole;

[0016] Among them, 1. slurry guide pipe; 2. conical sealing ring; 3. rubber sealing ring; 4. compression spring; 5. spherical pipe joint; 6. plum blossom rubber ring; 7. bent pipe; 8. tray; 9. anchor. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Reference Figure 1 The utility model discloses an external grouting device for an anchor cable, comprising a grouting pipe 1 arranged in a borehole, the grouting pipe 1 is detachably connected with an anchor cable, an adjusting component is arranged on the side wall of the grouting pipe 1 extending into the borehole, the adjusting component is detachably connected with an inner sealing component, a conical sealing ring 2 is arranged at one end of the inner sealing component away from the adjusting component, the end of the grouting pipe 1 extending out of the borehole is connected with a grouting component, the end of the anchor cable extending out of the borehole is detachably connected with an anchor 9, and the grouting component is arranged between the anchor 9 and the outer wall of the borehole.

[0020] The utility model performs fast and efficient grouting through a grouting pipe 1; and can make the sealing component tightly fit and seal with the inner wall of the borehole through an adjusting component, effectively avoiding delamination between the surrounding rock in the borehole wall and the sealing component, and effectively improving the sealing performance. At the same time, the grouting component can not only perform grouting, but also avoid leakage of grout, thereby improving the quality of the project.

[0021] In a further optimized solution, a plurality of slurry outlets are provided on the outer wall of the slurry guide pipe 1 extending into the borehole, so as to facilitate the slurry to flow into the borehole.

[0022] To further optimize the solution, a limit hole is opened at the bottom of the borehole, and one end of the grouting pipe 1 extends into the limit hole, so that the anchor cable can be placed in the limit hole.

[0023] In a further optimized solution, the outer diameter of the end of the tapered sealing ring 2 with a smaller outer diameter is smaller than the inner diameter of the limiting hole, and the outer diameter of the end of the tapered sealing ring 2 with a larger outer diameter is larger than the inner diameter of the limiting hole and smaller than the inner diameter of the drilled hole, so that the tapered sealing ring 2 can extend into the limiting hole.

[0024] A further optimized solution is provided, wherein the adjustment component includes a compression spring 4 sleeved on the slurry guide pipe 1, and the two ends of the compression spring 4 are respectively fixedly connected with an upper flange and a lower flange, the upper flange and the lower flange are sleeved on the slurry guide pipe 1, the upper flange is slidingly connected to the slurry guide pipe 1, the end of the upper flange facing away from the compression spring 4 is detachably connected to the inner sealing component, and the lower flange is fixedly connected to the slurry guide pipe 1.

[0025] According to a further optimized solution, the inner sealing assembly includes a plurality of rubber sealing rings 3, which are sleeved on the slurry guide pipe 1 and slidably connected to the slurry guide pipe 1, and the two rubber sealing rings 3 at both ends are detachably connected to the conical sealing ring 2 and the upper flange respectively.

[0026] In a further optimized solution, the grouting assembly includes a spherical pipe joint 5 connected to the grouting pipe 1, the spherical pipe joint 5 is fixedly connected and connected to a curved pipe 7, and the end of the spherical pipe joint 5 facing the borehole is detachably connected to a tray 8, and the tray 8 is fixedly connected to the side wall outside the borehole. The tray 8 can effectively seal the borehole to prevent the liquid from flowing out of the borehole.

[0027] In order to make the spherical pipe joint 5 closely contact with the tray 8, a positioning hole is opened on the inner hole of the tray 8, and the positioning hole is matched with the end of the spherical pipe joint 5. It is used to seal the slurry.

[0028] Further optimizing the scheme, a plum blossom rubber ring 6 is arranged between the spherical pipe joint 5 and the anchor 9. The inner wall of the plum blossom rubber ring 6 is plum blossom-shaped and spiral, so that the plum blossom rubber ring 6 can effectively seal the anchor cable.

[0029] Working process: first apply anchoring agent in the drill hole and the limit hole, and extend the anchor cable into the grouting pipe 1, install the compression spring 4 on the lower flange, install the upper flange at the end of the compression spring 4 away from the lower flange, and then install the rubber sealing ring 3 to the end of the upper flange away from the compression spring 4, install the conical sealing ring 2 at the end of the rubber sealing ring 3 away from the upper flange, extend the grouting pipe 1 into the drill hole, and extend the end of the grouting pipe 1 into the limit hole, and at the same time extend the anchor cable into the limit hole; then install the tray 8. During the installation of the tray 8 on the wall outside the drill hole, the tray 8 will push the grouting pipe 1 into the drill hole. At this time, the force on the conical sealing ring 2 is the same as the limit hole. After the positioning holes are abutted, the conical sealing ring 2 no longer moves, and the conical sealing ring 2 does not move, so the rubber sealing ring 3 does not move either. The grouting pipe 1 continues to move into the borehole, and the grouting pipe 1 drives the lower flange to move. The lower flange squeezes the compression spring 4, and the compression spring 4 squeezes the rubber sealing ring 3. The rubber sealing ring 3 is squeezed and expanded, so that the outer wall of the rubber sealing ring 3 is tightly fitted and sealed with the inner wall of the borehole, and then the spherical pipe joint 5 is connected with the grouting pipe 1 extending out of the tray 8, and a plum blossom rubber ring 6 is installed at the end of the spherical pipe joint 5 away from the tray 8, and an anchor 9 is installed at the end of the plum blossom rubber ring 6 away from the spherical pipe joint 5, and then grouting can be carried out through the bent pipe 7.

[0030] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to 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.

[0031] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. An anchor cable external grouting device, characterized in that: The invention comprises a grouting pipe (1) arranged in a borehole, an anchor cable being detachably connected to the inside of the grouting pipe (1), an adjusting component being arranged on the side wall of the grouting pipe (1) extending into the borehole, the adjusting component being detachably connected to an inner sealing component, a conical sealing ring (2) being arranged at one end of the inner sealing component away from the adjusting component, a grouting component being connected to one end of the grouting pipe (1) extending out of the borehole, an anchor device (9) being detachably connected to one end of the anchor cable extending out of the borehole, and the grouting component being arranged between the anchor device (9) and the outer wall of the borehole.

2. The anchor cable external grouting device according to claim 1, characterized in that: The outer wall of the slurry guide pipe (1) extending into the borehole is provided with a plurality of slurry outlets.

3. The anchor cable external grouting device according to claim 2, characterized in that: A limiting hole is provided at the bottom of the drill hole, and one end of the slurry guide pipe (1) extends into the limiting hole.

4. The anchor cable external grouting device according to claim 3, characterized in that: The outer diameter of the end of the conical sealing ring (2) with a smaller outer diameter is smaller than the inner diameter of the limiting hole, and the outer diameter of the end of the conical sealing ring (2) with a larger outer diameter is larger than the inner diameter of the limiting hole and smaller than the inner diameter of the drilled hole.

5. The anchor cable external grouting device according to claim 4, characterized in that: The adjustment component comprises a compression spring (4) sleeved on the slurry guide pipe (1), the two ends of the compression spring (4) are respectively fixedly connected with an upper flange and a lower flange, the upper flange and the lower flange are sleeved on the slurry guide pipe (1), the upper flange is slidably connected to the slurry guide pipe (1), the end of the upper flange away from the compression spring (4) is detachably connected to the inner sealing component, and the lower flange is fixedly connected to the slurry guide pipe (1).

6. The anchor cable external grouting device according to claim 5, characterized in that: The inner sealing assembly comprises a plurality of rubber sealing rings (3), wherein the rubber sealing rings (3) are sleeved on the slurry guide pipe (1) and are slidably connected to the slurry guide pipe (1), and the two rubber sealing rings (3) at the two ends are respectively detachably connected to the conical sealing ring (2) and the upper flange.

7. The anchor cable external grouting device according to claim 6, characterized in that: The grouting assembly comprises a spherical pipe joint (5) connected to the grouting pipe (1), the spherical pipe joint (5) is fixedly connected to and connected to a curved pipe (7), and one end of the spherical pipe joint (5) facing the borehole is detachably connected to a tray (8), and the tray (8) is fixedly connected to the side wall outside the borehole.

8. The anchor cable external grouting device according to claim 7, characterized in that: A plum blossom rubber ring (6) is provided between the spherical pipe joint (5) and the anchor (9).

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