Corrosion-preventing grouting anchor cable and supporting device
By setting a casing at the proximal end of the grouting anchor cable body and filling it with water-sealing soft glue, the problem of grouting pipes being prone to rust in the coal mine is solved, and effective protection of grouting anchor cables and stable reinforcement of tunnel surrounding rocks are achieved.
Patent Information
- Application Number
- CN202421929485.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-08-09
AI Technical Summary
In the prior art, the grouting pipes installed inside the grouting anchor cable are prone to rust in the humid environment of the coal mine, resulting in the inability to grout in the later stage.
A grouting anchor cable is designed to prevent rust. By installing a casing at the proximal end of the grouting anchor cable body and filling the casing with soft water barrier glue to prevent water from contacting the grouting tube, thereby protecting the grouting tube.
It effectively prevents rust of the grouting pipe, ensures the insulating service cycle of grouting anchor cables, and improves the grouting and reinforcement effect of the surrounding rock of the tunnel.
Smart Images
Figure CN222924478U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of anchoring facilities, in particular to a grouting anchor cable and a supporting device for preventing rust. Background Art
[0002] In recent years, the intensity of coal mining has become increasingly greater, the mining depth has continued to increase, the mining geological conditions have become more complex, the difficulty of tunnel maintenance has increased, and the deformation of tunnel surrounding rocks has become larger and larger. Therefore, tunnel surrounding rock control is an engineering problem that needs to be solved urgently. Grouting anchor cables, as a support material that can better control the deformation of tunnel surrounding rocks, are increasingly widely used. Grouting anchor cables are set during tunnel excavation. After being placed for a period of time, the tunnel surrounding rocks are grouting reinforced through the grouting pipe of the grouting anchor cable. There are two structural forms of grouting anchor cables. The first is to set the grouting device inside the grouting anchor cable. Specifically, a grouting pipe is set inside the grouting anchor cable, and grouting is carried out through the grouting pipe; the second is that the grouting device is arranged outside the anchor cable, and a grouting pipe is placed between the anchor cable hole and the anchor cable, and grouting is carried out through the grouting pipe. Due to the simple construction process, fast construction speed and good grouting effect of the first type of grouting anchor cable, it has been widely used.
[0003] In the prior art, a grouting pipe is arranged inside the grouting anchor cable, and grouting is performed through the grouting pipe. However, the underground environment of the coal mine is humid, and there is generally a time difference of several months from the installation of the grouting anchor cable to the grouting, and the grouting pipe is prone to rust, resulting in the phenomenon that grouting cannot be performed in the later stage. Utility Model Content
[0004] The utility model provides a grouting anchor cable and a supporting device for preventing corrosion, which are used to solve the defect in the prior art that the grouting anchor cable is prone to grouting pipe corrosion, resulting in failure of grouting in the later stage.
[0005] The utility model provides a grouting anchor cable for preventing rust, comprising a grouting anchor cable body, a grouting pipe and a sleeve;
[0006] The grouting anchor body has a hollow installation cavity; the grouting pipe is inserted into the installation cavity; the sleeve has an opening at one end, the sleeve is sleeved on the outside of the proximal end of the grouting anchor body through the opening, and the open end of the sleeve extends toward the distal end of the grouting anchor body.
[0007] According to the rust-proof grouting anchor cable provided by the utility model, the casing is filled with waterproof soft glue.
[0008] According to the rust-proof grouting anchor provided by the utility model, the sleeve is a soft sleeve, and the inner diameter of the sleeve is smaller than the outer diameter of the grouting anchor body.
[0009] According to a grouting anchor cable for preventing rust provided by the present utility model, a first positioning portion is provided on the inner wall of the sleeve, and a second positioning portion is provided on the outer wall of the grouting anchor cable body, and the first positioning portion and the second positioning portion cooperate with each other.
[0010] According to a grouting anchor cable for preventing rust provided by the present utility model, internal threads are provided on the inner wall of the sleeve, and external threads that cooperate with the internal threads are provided on the outer wall of the proximal end of the grouting anchor cable body.
[0011] According to a grouting anchor cable for preventing rust provided by the present utility model, a seal is provided between the sleeve and the grouting anchor cable body.
[0012] According to a grouting anchor cable for preventing rust provided by the present utility model, a protrusion that is inserted into the grouting pipe is provided on the inner wall of the sleeve.
[0013] According to a grouting anchor cable for preventing rust provided by the present utility model, the cross-section of the protrusion gradually decreases from near the proximal end of the grouting anchor cable body to away from the proximal end of the grouting anchor cable body.
[0014] According to a grouting anchor cable for preventing rust provided by the present utility model, the length of the sleeve is 50 mm to 70 mm.
[0015] The present utility model further provides a support device, including the grouting anchor cable for preventing rust described in any one of the above.
[0016] For the grouting anchor cable for preventing rust provided by the present utility model, by providing a sleeve at the proximal end of the grouting anchor cable body, water is prevented from contacting the grouting pipe, effectively protecting the grouting pipe inside the grouting anchor cable body, thereby avoiding corrosion damage to the grouting pipe, and being able to ensure effective grouting after the grouting anchor cable body is driven for a period of time, so as to improve the injectability service life of the grouting anchor cable. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0018] Figure 1 is one of the structural schematic diagrams of the grouting anchor cable for preventing rust provided by the present utility model.
[0019] Figure 2 is the structural schematic diagram of the grouting anchor cable body provided by the present utility model.
[0020] Figure 3It is a schematic structural view of the casing provided by the present utility model.
[0021] Figure 4 It is the second schematic structural view of the grouting anchor cable for preventing rust provided by the present utility model.
[0022] Figure 5 is Figure 4 The partial enlarged structural view at position A in
[0023] Reference numerals: 100, grouting anchor cable body; 110, installation cavity; 120, second positioning portion; 200, grouting pipe; 300, casing; 310, first positioning portion; 400, water-proof soft rubber. Specific embodiments
[0024] The following further describes in detail the embodiments of the present utility model in conjunction with the drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.
[0025] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0026] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific situations.
[0027] In the embodiments of the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be 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, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.
[0028] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present 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 can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0029] The following combines Figures 1 - 5 to describe the grouting anchor cable for preventing rust of the embodiments of the present utility model.
[0030] An embodiment of the first aspect of the present utility model provides a grouting anchor cable for preventing rust, Figure 1 which exemplifies one of the structural schematic diagrams of the grouting anchor cable for preventing rust provided by the embodiments of the present utility model. As Figure 1 shown, the grouting anchor cable for preventing rust includes a grouting anchor cable body 100, a grouting pipe 200 and a sleeve 300.
[0031] Figure 2 which exemplifies the structural schematic diagram of the grouting anchor cable body provided by the present utility model. As Figure 2 shown, the grouting anchor cable body 100 has a hollow installation cavity 110; the grouting pipe 200 is inserted through the installation cavity 110; one end of the sleeve 300 has an opening, and the sleeve 300 is sleeved on the outside of the proximal end of the grouting anchor cable body 100 through the opening, and the open end of the sleeve 300 extends towards the distal end of the grouting anchor cable body 100.
[0032] It can be understood that the grouting anchor cable body 100 is provided with a through hole, thus forming a hollow installation cavity 110, and the grouting pipe 200 is inserted into the installation cavity 110; a sleeve 300 is sleeved on the proximal end of the grouting anchor cable body 100, and the sleeve 300 is a cavity structure with one end open, so the sleeve 300 is sleeved on the proximal end face of the grouting anchor cable body 100, thereby preventing water from contacting the grouting pipe 200 and further preventing the grouting pipe 200 from being corroded.
[0033] It should be noted that the distal end refers to the end farther from the operator when the grouting anchor cable body 100 is driven into the roadway surrounding rock, that is, the end where the grouting anchor cable body 100 is driven; the proximal end refers to the end closer to the operator when the grouting anchor cable body 100 is driven into the roadway surrounding rock, that is, the end located on the side of the roadway.
[0034] It can be understood that when supporting the roadway surrounding rock, during the roadway tunneling period, the grouting anchor cable body 100 with the grouting pipe 200 arranged inside is driven into the roadway surrounding rock, and at the same time, a sleeve 300 is sleeved on the proximal end of the grouting anchor cable body 100 to protect the grouting pipe 200 and prevent water from contacting the grouting pipe 200; after the grouting anchor cable body 100 is driven, the sleeve 300 on the grouting anchor cable body 100 is removed, a grouting pipeline is connected to the tail end of the grouting pipe 200, and the grouting pipeline is fixedly connected to the grouting pump, and then the grouting pump is turned on to start grouting into the grouting pipe 200, so as to grout and reinforce the roadway surrounding rock through the grouting pipe 200 inside the grouting anchor cable body 100.
[0035] The anti-rust grouting anchor cable provided by the embodiment of the present invention prevents water from contacting the grouting pipe 200 by arranging the sleeve 300 at the proximal end of the grouting anchor cable body 100, effectively protects the grouting pipe 200 inside the grouting anchor cable body 100, and further avoids the corrosion and damage of the grouting pipe 200.
[0036] It should be noted that arranging the sleeve 300 at the proximal end of the grouting anchor cable body 100 can ensure that effective grouting can still be carried out after the grouting anchor cable body 100 is driven for a period of time, thereby improving the injectability service life of the grouting anchor cable.
[0037] In an embodiment of the present invention, the sleeve 300 is a soft sleeve, and the inner diameter of the sleeve 300 is smaller than the outer diameter of the grouting anchor cable body 100.
[0038] It can be understood that the sleeve 300 is detachably arranged at the proximal end of the grouting anchor cable body 100, the sleeve 300 is a soft sleeve, and the inner diameter of the sleeve 300 can be reasonably designed according to the outer diameter of the grouting anchor cable body 100, as long as the inner diameter of the sleeve 300 is smaller than the outer diameter of the grouting anchor cable body 100.
[0039] Optionally, the length of the sleeve 300 is 50 mm to 70 mm.
[0040] Exemplarily, the sleeve 300 is made of a soft rubber tube. The inner diameter of the sleeve 300 is 2 mm smaller than the outer diameter of the grouting anchor cable body 100. The inner diameter of the sleeve 300 is about 20 mm, and the length of the sleeve 300 is 60 mm.
[0041] It can be understood that the soft rubber tube has a shrinkable function and can closely fit with the grouting anchor cable body 100, preventing the situation that the sleeve 300 falls off due to its own gravity stress after being sleeved on the tail end of the grouting anchor cable body 100.
[0042] In an embodiment of the present utility model, the figure exemplifies a schematic structural diagram of the sleeve provided by the present utility model, as Figure 1 and Figure 3 shown, a water-proof soft rubber 400 is filled in the sleeve 300.
[0043] It can be understood that the water-proof soft rubber 400 is placed in the sleeve 300, and the water-proof soft rubber 400 has a water-proof function; during use, the tail end of the grouting anchor cable body 100 is sleeved into the sleeve 300, and a part of the tail end of the grouting anchor cable body 100 is extended into the water-proof soft rubber 400, so that the grouting pipe 200 in the grouting anchor cable body 100 is surrounded by the water-proof soft rubber 400, further preventing water from contacting the grouting pipe 200, and further preventing the grouting pipe 200 from being corroded.
[0044] Furthermore, the water-proof soft rubber 400 is filled at the bottom of the sleeve 300, and the filling height of the water-proof soft rubber 400 is 1 / 3 - 2 / 3 of the height of the sleeve 300. Preferably, the filling height of the water-proof soft rubber 400 is about 1 / 2 of the height of the sleeve 300.
[0045] Exemplarily, the length of the sleeve 300 is 60 mm, and the height of the water-proof soft rubber 400 is 30 mm, so that the height of the water-proof soft rubber 400 accounts for half of the height of the sleeve 300.
[0046] In an alternative embodiment of the present utility model, Figure 4 the figure exemplifies a second schematic structural diagram of the anti-rust grouting anchor cable provided by the present utility model, Figure 5 the figure exemplifies Figure 4 the partial enlarged structural diagram at A in Figure 4 and Figure 5 shown, the inner wall of the sleeve 300 has a first positioning portion 310, and the outer wall of the grouting anchor cable body 100 has a second positioning portion 120, and the first positioning portion 310 and the second positioning portion 120 cooperate with each other.
[0047] It can be understood that when the grouting anchor cable body 100 is driven into the top of the roadway surrounding rock, in order to avoid the situation that the casing 300 at the tail end of the grouting anchor cable body 100 falls due to its own weight, a first positioning portion 310 is provided on the inner wall of the casing 300, and a second positioning portion 120 is provided on the outer wall of the grouting anchor cable body 100. Through the cooperation of the first positioning portion 310 and the second positioning portion 120, the position of the casing 300 on the grouting anchor cable body 100 is positioned to prevent the casing 300 from falling off the grouting anchor cable body 100.
[0048] Exemplarily, the first positioning portion 310 is a positioning groove, and the second positioning portion 120 is a positioning protrusion that cooperates with the positioning groove. Of course, in other embodiments, the first positioning portion 310 and the second positioning portion 120 can also adopt other positioning structures.
[0049] In another embodiment of the present utility model, the casing 300 is threadedly connected to the proximal end of the grouting anchor cable body 100. Then, an internal thread is provided on the inner wall of the casing 300, and an external thread that cooperates with the internal thread is provided on the outer wall of the proximal end of the grouting anchor cable body 100.
[0050] It can be understood that the threaded connection between the casing 300 and the proximal end of the grouting anchor cable body 100 can improve the connection stability between the casing 300 and the grouting anchor cable body 100, and prevent the situation that the casing 300 falls off due to its own weight stress after being sleeved on the tail end of the grouting anchor cable body 100. In addition, the threaded connection between the casing 300 and the proximal end of the grouting anchor cable body 100 facilitates the connection and disassembly of the casing 300 on the proximal end of the grouting anchor cable body 100.
[0051] It can be understood that connecting the casing 300 to the proximal end of the grouting anchor cable body 100 can prevent the corrosion and blockage problems of the grouting anchor cable body 100 during the placement process. By connecting the casing 300 to the end of the proximal end of the grouting anchor cable body 100, it can prevent water from contacting the grouting pipe 200, effectively protect the grouting pipe 200 inside the grouting anchor cable body 100, and further avoid the situation that the grouting pipe 200 is corroded and damaged, resulting in the inability to grout in the later stage.
[0052] Furthermore, a sealing member is provided between the casing 300 and the grouting anchor cable body 100 to improve the sealing performance of the connection between the casing 300 and the grouting anchor cable body 100.
[0053] In some exemplary embodiments, the inner wall of the casing 300 has a protrusion (not shown in the figure) inserted into the grouting pipe 200. When the casing 300 is sleeved on the outer periphery of the proximal end of the grouting anchor cable body 100 through the opening, the bottom of the casing 300 has a protrusion inserted into the grouting pipe 200 to achieve the plugging of the grouting pipe 200, further improving the isolation effect of the grouting pipe 200 from water, and thus improving the protection effect on the grouting pipe 200 inside the grouting anchor cable body 100.
[0054] Furthermore, the cross-section of the protrusion gradually decreases from the proximal end of the grouting anchor cable body 100 towards the distal end away from the proximal end of the grouting anchor cable body 100. Thus, during the process of inserting the protrusion into the hollow hole of the grouting pipe 200, the sealing performance of the connection between the protrusion and the grouting pipe 200 is improved, and the isolation effect between the grouting pipe 200 and water is further enhanced.
[0055] An embodiment of the second aspect of the present utility model provides a support device, which includes the anti-rust grouting anchor cable provided in any of the above embodiments.
[0056] For the anti-rust support device provided by the embodiment of the present utility model, by arranging the sleeve 300 at the proximal end of the grouting anchor cable body 100, water is prevented from contacting the grouting pipe 200, effectively protecting the grouting pipe 200 inside the grouting anchor cable body 100, and further avoiding the corrosion and damage of the grouting pipe 200; and it can ensure that effective grouting can still be carried out after the grouting anchor cable body 100 is driven for a period of time, thereby improving the injectability service life of the grouting anchor cable.
[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims
1. A grouting anchor cable for preventing rust, characterized in that: include: A grouting anchor cable body (100), wherein the grouting anchor cable body (100) has a hollow installation cavity (110); A grouting pipe (200) passing through the installation cavity (110); A sleeve (300), one end of the sleeve (300) having an opening, the sleeve (300) being sleeved on the outside of the proximal end of the grouting anchor body (100) through the opening, the open end of the sleeve (300) extending toward the distal end of the grouting anchor body (100).
2. The anti-corrosion grouting anchor cable according to claim 1, characterized in that: The sleeve (300) is filled with waterproof soft glue (400).
3. The anti-corrosion grouting anchor cable according to claim 1 or 2, characterized in that: The casing (300) is a soft casing, and the inner diameter of the casing (300) is smaller than the outer diameter of the grouting anchor cable body (100).
4. The anti-corrosion grouting anchor cable according to claim 3, characterized in that: The inner wall of the sleeve (300) has a first positioning portion (310), and the outer wall of the grouting anchor cable body (100) has a second positioning portion (120), and the first positioning portion (310) and the second positioning portion (120) cooperate with each other.
5. The anti-corrosion grouting anchor cable according to claim 1, characterized in that: The inner wall of the sleeve (300) is provided with an internal thread, and the outer wall of the proximal end of the grouting anchor body (100) has an external thread matching the internal thread.
6. The anti-corrosion grouting anchor cable according to claim 1 or 5, characterized in that: A sealing member is provided between the casing (300) and the grouting anchor body (100).
7. The anti-corrosion grouting anchor cable according to claim 6, characterized in that: The inner wall of the sleeve (300) has a protrusion which is inserted into the grouting pipe (200).
8. The anti-corrosion grouting anchor cable according to claim 7, characterized in that: The cross section of the protrusion gradually decreases from the proximal end close to the grouting anchor body (100) to the proximal end away from the grouting anchor body (100).
9. The anti-corrosion grouting anchor cable according to claim 1, 2 or 5, characterized in that: The length of the sleeve (300) is 50 mm to 70 mm.
10. A support device, characterized in that: The invention comprises a grouting anchor cable for preventing rust as claimed in any one of claims 1 to 9.