A pressure-guided anchor cable wire breakage protection device

Abstract

This invention discloses a pressure-guided anchor cable breakage protection device, comprising: a guide metal sleeve, which is fitted onto the tail end of the anchor cable, and a guide portion at the bottom of the guide metal sleeve for guiding the broken wire of the anchor cable end to the roadway sidewall; and two suspension components, one end of which is fixedly connected to both sides of the top of the guide metal sleeve, and the other end of each is fixedly connected to a tray on the support roof. This device is installed in roadways where roof anchor cables may break. When a roof anchor cable breaks, the broken wire can be guided by the guide portion of the guide metal sleeve to propel it towards the roadway sidewall, preventing it from impacting the roadway and causing casualties, thus meeting the safety requirements of underground support engineering.

Description

Technical Field

[0001] This invention relates to the field of tunnel support technology, and more specifically to a pressure-guided anchor cable breakage protection device. Background Technology

[0002] Stable support engineering in coal mine roadways is a crucial guarantee for the safe mining of underground resources. With the reform of mine support technology, coal mine roadway support has undergone a long process, from timber support, masonry arch support, and steel section support to anchor mesh (cable) support. Anchor mesh (cable) support is a type of "active support" that can promptly reinforce the surrounding rock, reduce rock deformation, prevent early roof delamination, and has the advantages of simplifying end support at the working face, reducing support costs, and reducing the labor intensity of workers. Therefore, it is widely used as the main technology for mine support.

[0003] However, due to the complex and harsh underground rock conditions, coupled with the severe impact of mining pressure, the roof pressure in the roadway becomes complex, volatile, and excessive, leading to frequent incidents of anchor cable breakage and ejection injuries. Traditional methods to address this problem involve using steel pipes, such as CN201723249U-Anchor Cable Breakage Anti-Ejection Protection Device. However, steel pipes are generally vertically arranged and lack guiding function. When a large anchor cable breakage occurs, breaking the steel wire rope, the steel pipe cannot guide the high-energy anchor cable to a safe space. There remains a risk that the high-energy anchor cable breakage will directly impact the roadway, causing injury or death.

[0004] Therefore, how to provide a pressure-guided anchor cable breakage protection device that, after an anchor cable breaks, directs the broken wire towards the sidewall of the roadway, avoiding direct impact on the roadway and thus preventing casualties, and meets the safety requirements of underground support engineering, is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides a pressure-guided anchor cable breakage protection device that, after an anchor cable breaks, directs the broken wire toward the sidewall of the roadway, avoiding direct impact on the roadway and thus preventing casualties, thereby meeting the safety requirements of underground support engineering.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pressure-guided anchor cable breakage protection device includes:

[0008] A guide metal sleeve is fitted onto the tail end of the anchor cable end, and the bottom of the guide metal sleeve is provided with a guide part for guiding the broken wire of the anchor cable end to the roadway side.

[0009] The suspension components consist of two parts, one end of which is fixedly connected to both sides of the top of the guide metal sleeve, and the other end of each part is fixedly connected to the tray on the support top plate.

[0010] Compared with the prior art, the application provides a let-pressure guiding type anchor cable broken wire protection device, which is arranged in a roadway where roof anchor cable broken wire may occur.

[0011] Further, the guiding type metal sleeve comprises an upper cylindrical barrel, a middle conical barrel, and a bottom curved guiding barrel which is the guiding part and can be plastically deformed, the upper barrel mouth of the upper cylindrical barrel is fixedly connected with one end of two suspension members respectively, the lower barrel mouth of the upper cylindrical barrel is fixedly connected with the large end barrel mouth of the middle conical barrel, the small end barrel mouth of the middle conical barrel is fixedly connected with the high end barrel mouth of the bottom curved guiding barrel, and the low end barrel mouth of the bottom curved guiding barrel is arranged towards the roadway side.

[0012] Further, the inner diameter of the upper cylindrical barrel is greater than the diameter of the anchor cable end head, the inner diameter of the large end barrel mouth of the middle conical barrel is the same as the inner diameter of the upper cylindrical barrel, the inner diameter of the small end barrel mouth of the middle conical barrel is smaller than the diameter of the anchor cable end head, the inner diameter of the high end barrel mouth of the bottom curved guiding barrel is the same as the inner diameter of the small end barrel mouth of the middle conical barrel, and the diameter of the low end barrel mouth of the bottom curved guiding barrel is smaller than the diameter of the high end barrel mouth of the bottom curved guiding barrel and smaller than the diameter of the broken anchor cable end head.

[0013] The beneficial effects of the above technical solution are that the diameter of the inner wall of the guiding type metal sleeve gradually decreases from the upper cylindrical barrel to the bottom curved guiding barrel and is gradually smaller than the diameter of the broken wire, so that the broken wire is easily guided into the bottom curved guiding barrel under the guidance of the smooth inner barrel wall of the middle conical barrel after the anchor cable is broken, the bottom curved guiding barrel is plastically deformed due to the fact that the inner diameter of the bottom curved guiding barrel is smaller than the diameter of the broken wire, part of the kinetic energy of the broken wire is consumed, the kinetic energy of the broken wire is further consumed under the action of friction between the broken wire and the inner wall of the curved guiding barrel, the kinetic energy of the broken wire is reduced again, the broken wire with small kinetic energy is clamped in the curved guiding barrel under the guidance of the curved guiding barrel, and the broken wire with large kinetic energy is shot towards the roadway side under the guidance of the curved guiding barrel, thereby avoiding the broken wire from being shot towards the roadway and causing casualties.

[0014] Further, the upper cylinder body is provided with a first handle on each of the two opposite side walls of the upper cylinder mouth, and a second handle is fixed on each of the two opposite side walls of the tray, and the two ends of the suspension member are fixedly connected with D-shaped buckles, and the two D-shaped buckles are fixedly connected with the first handles and the second handles respectively.

[0015] Further, the end of the suspension member is fixedly connected with the D-shaped buckle through a U-shaped clamp head.

[0016] Further, the first handle is provided with a through hole for the D-shaped buckle to pass through.

[0017] Further, the second handle is in a frame structure, and the D-shaped buckle passes through the frame opening of the frame structure.

[0018] The beneficial effects of the above technical scheme are that the device can be combined, disassembled and reused through the D-shaped buckle, the U-shaped clamp head, the first handle and the second handle. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute a part of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0020] Figure 1 The accompanying drawings are schematic diagrams of the front view structure of the pressure-relieving guide type anchor cable broken wire protection device. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0022] As shown in the drawings, Figure 1 The embodiments of the present application disclose a pressure-relieving guide type anchor cable broken wire protection device, which comprises:

[0023] A guide type metal sleeve 1 is sleeved on the tail end of an anchor cable end head 2, and the bottom of the guide type metal sleeve 1 is provided with a guide part for guiding the broken wire of the anchor cable end head 2 to the roadway rib part;

[0024] Suspender 3, two, one end of which is fixedly connected with the two sides of the top of the guide metal sleeve 1, the other end is fixedly connected with the tray 4 on the support roof.

[0025] The guide metal sleeve 1 comprises: an upper cylindrical barrel 11, a middle conical barrel 12, a bottom curved guide barrel 13 which is a guide part and can be plastically deformed (such as a plastically deformable metal material, such as iron, aluminum, etc.), the upper barrel mouth of the upper cylindrical barrel 11 is fixedly connected with one end of the two suspender 3, the lower barrel mouth of the upper cylindrical barrel 11 is fixedly connected with the large end barrel mouth of the middle conical barrel 12, the small end barrel mouth of the middle conical barrel 12 is fixedly connected with the high end barrel mouth of the bottom curved guide barrel 13, and the low end barrel mouth of the bottom curved guide barrel 13 is arranged towards the roadway side.

[0026] The inner diameter of the upper cylindrical barrel 11 is slightly larger than the diameter of the anchor cable end 2, the inner diameter of the large end barrel mouth of the middle conical barrel 12 is the same as that of the upper cylindrical barrel 11, the inner diameter of the small end barrel mouth of the middle conical barrel 12 is smaller than the diameter of the anchor cable end 2 and slightly larger than the diameter of the broken wire, the inner diameter of the high end barrel mouth of the bottom curved guide barrel 13 is the same as that of the small end barrel mouth of the middle conical barrel 12, and the diameter of the low end barrel mouth of the bottom curved guide barrel 13 is smaller than that of the high end barrel mouth of the bottom curved guide barrel 13 and the diameter of the broken wire of the anchor cable end 2.

[0027] For example, the diameter of the anchor cable end 2 is 2.2 cm, the diameter of a single anchor cable wire is 4 mm, the inner diameter of the upper cylindrical barrel 11 is 2.3 cm, which is convenient for inserting into the anchor cable end 2, the diameter of the large end of the middle conical barrel 12 is 2.3 cm, the diameter of the small end is 2.0 mm, the inner diameter of the high end barrel mouth of the bottom curved guide barrel 13 is 2.0 mm, which is easy for the broken wire to enter the bottom curved guide barrel, the diameter of the low end barrel mouth of the bottom curved guide barrel 13 is 1-3 mm, and the diameter in the bottom curved guide barrel 13 gradually decreases from the high end barrel mouth to the low end barrel mouth, so that when the broken wire enters the bottom curved guide barrel, it will extrude the bottom curved guide barrel and cause plastic deformation, thereby consuming part of the kinetic energy of the broken wire; and the inner wall of the bottom curved guide barrel 13 is arc-shaped, so that the broken wire can continuously rub against the arc-shaped inner wall in the bottom curved guide barrel, which can further consume part of the kinetic energy of the broken wire, and finally the broken wire is guided by the bottom curved guide barrel to shoot towards the side of the roadway.

[0028] Two opposite side walls of the upper cylinder 11 are respectively fixed with first handles 5, two opposite side walls of the tray 4 are respectively fixed with second handles 6, two ends of the suspension member 3 are respectively fixed with D-shaped buckles 7, and the two D-shaped buckles 7 are respectively fixed with the first handles 5 and the second handles 6. The suspension member 3 is fixed with the D-shaped buckles 7 through U-shaped clamps 8. The first handle 5 is in L-shaped structure or plate-shaped structure, and a through hole 51 for the D-shaped buckle 7 to pass through is arranged on the first handle 5. The second handle 6 is in frame-shaped structure, and the D-shaped buckle 7 passes through the frame opening of the frame-shaped structure.

[0029] The various embodiments are described in the present specification in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts of various embodiments can be mutually referred to. For the device disclosed by the embodiments, since it corresponds to the method disclosed by the embodiments, the description is relatively simple, and the relevant parts can be referred to the method part.

[0030] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A yield guide anchor cable breakage protection device, characterized in that, The utility model relates to a guiding metal sleeve (1) is arranged on the tail end of anchor cable end head (2), the bottom of guiding metal sleeve (1) is equipped with the guiding portion for guiding the broken wire of anchor cable end head (2) to the roadway rib part; Two suspension members (3) are fixedly connected to the top of guiding metal sleeve (1) and the tray (4) on the support roof respectively; The guiding metal sleeve (1) comprises an upper cylindrical barrel (11), a middle conical barrel (12) and a bottom curved guiding barrel (13) which is the guiding portion and can be plastically deformed, the upper barrel mouth of the upper cylindrical barrel (11) is fixedly connected to the one end of the two suspension members (3), the lower barrel mouth of the upper cylindrical barrel (11) is fixedly connected to the large end barrel mouth of the middle conical barrel (12), the small end barrel mouth of the middle conical barrel (12) is fixedly connected to the high end barrel mouth of the bottom curved guiding barrel (13), and the low end barrel mouth of the bottom curved guiding barrel (13) is arranged towards the roadway rib part. The inner diameter of the upper cylindrical barrel (11) is greater than the diameter of the anchor cable end head (2), the inner diameter of the large end barrel mouth of the middle conical barrel (12) is the same as that of the upper cylindrical barrel (11), the inner diameter of the small end barrel mouth of the middle conical barrel (12) is smaller than that of the anchor cable end head (2), the inner diameter of the high end barrel mouth of the bottom curved guiding barrel (13) is the same as that of the small end barrel mouth of the middle conical barrel (12), and the diameter of the low end barrel mouth of the bottom curved guiding barrel (13) is smaller than that of the high end barrel mouth of the bottom curved guiding barrel (13) and the diameter of the broken wire of the anchor cable end head (2).

2. A yield guide type wire breakage protection device according to claim 1, characterized in that, The two opposite side walls of the upper barrel mouth of the upper cylindrical barrel (11) are fixedly connected with first handles (5) respectively, the two opposite side walls of the tray (4) are fixedly connected with second handles (6) respectively, and the two ends of the suspension member (3) are fixedly connected with D-shaped buckles (7).

3. A yield guide type wire breakage protection device according to claim 1, characterized in that, The end of the suspension member (3) is fixedly connected with the D-shaped buckle (7) through a U-shaped clamp head (8).

4. A yield guide type wire breakage protection device according to claim 3, characterized in that, The first handle (5) is provided with a through hole (51) for the D-shaped buckle (7) to pass through.

5. A yield guide type wire breakage protection device according to claim 3, characterized in that, The second handle (6) is a frame structure, and the D-shaped buckle (7) passes through the frame opening of the frame structure.

6. A yield guide type wire breakage protection device according to claim 3, characterized in that, ​

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