Lock anchor withdrawing device of coal mine mining roadway

Abstract

The utility model relates to the technical field of anchor withdrawing locksets, and discloses a lockset anchor withdrawing device of a coal mine mining roadway, which comprises an outer lock sleeve, the outer lock sleeve consists of an outer left lock sleeve and an outer right lock sleeve, an inner lock sleeve is movably sleeved in the outer lock sleeve, the inner lock sleeve consists of four sub lock sleeves, and the sub lock sleeves are arranged in the outer lock sleeve. Mounting assemblies are arranged on the outer wall of the outer left lock sleeve and the outer wall of the outer right lock sleeve, each mounting assembly comprises two threaded seats which are fixed to the rear sides of the outer walls of the outer left lock sleeve and the outer right lock sleeve respectively, the two threaded seats are attached to form a threaded column, and the outer wall of each threaded column is in threaded connection with a locking nut. The lock nut is in threaded connection with the threaded seat, so that the outer left lock sleeve and the outer right lock sleeve can be rigidly connected, the outer lock sleeve and the inner lock sleeve which are installed are stably connected and high in reliability, the lock nut only needs to be disassembled and the outer left lock sleeve and the outer right lock sleeve are rotated during disassembly, tools such as an anchor retreating device are not needed, and the disassembly is convenient. Disassembly is simple and fast.

Description

Technical Field

[0001] This utility model relates to the field of anchor release lock technology, and in particular to an anchor release device for a coal mine roadway. Background Technology

[0002] Coal mine return roadways are working faces with coal mining functions. They also serve as transportation routes, tracks, return airways, and access cutters. Modern coal mines commonly use anchor cable lock support technology, which involves installing numerous anchor cable locks on the roadway roof, typically one every meter. Each anchor cable lock consists of an external connecting steel support plate, a lock outer sleeve, and an inner cone sleeve. Applying pressure and striking the inner cone sleeve secures the lock. Multiple anchor cable locks combine to form a complete roadway support chain. This support method is relatively easy to construct, does not reduce the roadway cross-sectional area, is relatively strong, and the anchor cable locks can be disassembled and reused, improving economic efficiency and practicality.

[0003] An existing lock release device for coal mine roadways (publication number: CN221256827U) has at least the following drawbacks: the device uses an elastic self-locking rod and a connecting rod to achieve the installation and fixation of the outer lock sleeve. However, the lock is used in a high-load environment for fixing steel cables, and the elastic snap-fit ​​connection method is not reliable enough, making it difficult to ensure that the outer lock sleeve has strong pull-out resistance, thus resulting in low reliability of the lock. Therefore, this utility model is proposed. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a lock unanchoring device for coal mine mining roadways.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An anchor release device for a coal mine roadway includes an outer locking sleeve, which is composed of an outer left locking sleeve and an outer right locking sleeve. An inner locking sleeve is movably fitted inside the outer locking sleeve, and the inner locking sleeve is composed of four sub-locking sleeves. The inner locking sleeve has a conical structure, and the outer wall of the inner locking sleeve fits into the inner cavity of the outer locking sleeve. The outer walls of both the outer left and outer right locking sleeves are provided with mounting components. The mounting components include two threaded seats that are respectively fixed to the rear side of the outer walls of the outer left and outer right locking sleeves. The two threaded seats fit together to form a threaded column, and a locking nut is threadedly connected to the outer wall of the threaded column.

[0007] As a further embodiment of this utility model, a connecting groove is provided on the front side of both the outer left locking sleeve and the outer right locking sleeve. A snap-fit ​​seat is fixed inside one side of the connecting groove of the outer left locking sleeve, and a snap-fit ​​strip is fixed on one side of the inner wall of the connecting groove of the outer right locking sleeve. The snap-fit ​​strip and the snap-fit ​​seat are slidably snapped together.

[0008] As a further embodiment of this utility model, a locking rod is rotatably connected to the rear side of the threaded seat of the outer right locking sleeve, and the front side of the locking rod abuts against the rear side of the locking nut.

[0009] As a further embodiment of this utility model, a magnetic plate is fixed to the front side of the locking rod, and the front side of the magnetic plate is magnetically attracted to the rear side of the locking nut.

[0010] As a further embodiment of this utility model, the inner wall of the inner locking sleeve is provided with an anti-slip groove.

[0011] As a further embodiment of this utility model, four rotating rods are fixed to the outer wall of the locking nut, and the four rotating rods are arranged in a circular array on the outer wall of the locking nut with the axis of the locking nut as the center.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] During installation, the outer left locking sleeve, outer right locking sleeve, and inner locking sleeve are fitted onto the outer wall of the steel cable. At this time, the outer left and outer right locking sleeves are staggered front to back. Then, they slide relative to each other, causing the locking strip to slide and lock into the locking seat. Then, the inner locking sleeve is hammered into the outer locking sleeve and locked to the steel cable. Finally, the locking nut is threaded into the threaded seat, thus rigidly connecting the outer left and outer right locking sleeves. The connection between the outer and inner locking sleeves after installation is stable and highly reliable. Disassembly is simple and quick; it only requires removing the locking nut and rotating the outer left and outer right locking sleeves without the need for tools such as anchor pullers. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a locking and anchoring device for a coal mine roadway proposed in this utility model.

[0015] Figure 2 This is a three-dimensional disassembled structural diagram of a locking and anchoring device for a coal mine roadway proposed in this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the locking seat of a locking and unanchoring device for a coal mine roadway proposed in this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the outer right locking sleeve of a locking device for a coal mine roadway proposed in this utility model.

[0018] In the diagram: 1. Outer locking sleeve; 101. Outer left locking sleeve; 102. Outer right locking sleeve; 2. Inner locking sleeve; 201. Sub-locking sleeve; 3. Threaded seat; 301. Locking nut; 302. Connecting groove; 303. Snap-fit ​​seat; 304. Snap-fit ​​strip; 4. Locking rod; 401. Magnetic suction piece; 5. Anti-slip groove; 6. Rotating rod. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figures 1-4 As shown, a locking and unanchoring device for a coal mine roadway includes an outer locking sleeve 1, which is composed of an outer left locking sleeve 101 and an outer right locking sleeve 102. An inner locking sleeve 2 is movably fitted inside the outer locking sleeve 1. The inner locking sleeve 2 is composed of four sub-locking sleeves 201. The inner locking sleeve 2 has a conical structure. The outer wall of the inner locking sleeve 2 matches the inner cavity of the outer locking sleeve 1. The outer walls of the outer left locking sleeve 101 and the outer right locking sleeve 102 are provided with mounting components. The mounting components include two threaded seats 3 that are respectively fixed to the rear side of the outer walls of the outer left locking sleeve 101 and the outer right locking sleeve 102. The two threaded seats 3 fit together to form a threaded column. The outer wall of the threaded column is threadedly connected with a locking nut 301.

[0023] like Figures 2-4As shown, in this embodiment, both the outer left locking sleeve 101 and the outer right locking sleeve 102 have connecting grooves 302 on their front sides. A snap-fit ​​seat 303 is fixed inside one side of the connecting groove 302 of the outer left locking sleeve 101, and a snap-fit ​​strip 304 is fixed to one side of the inner wall of the connecting groove 302 of the outer right locking sleeve 102. The snap-fit ​​strip 304 and the snap-fit ​​seat 303 are slidably snapped together. During installation, the outer left locking sleeve 101, the outer right locking sleeve 102, and the inner locking sleeve 2 are fitted onto the outer wall of the steel cable. At this time, the outer left locking sleeve 101 and the outer right locking sleeve 102 are staggered front to back. Then, the relative sliding causes the locking strip 304 to slide and lock with the locking seat 303. Then, the inner locking sleeve 2 is hammered into the outer locking sleeve 1 and locked with the steel cable. Then, the locking nut 301 is threaded to the threaded seat 3, which can rigidly connect the outer left locking sleeve 101 and the outer right locking sleeve 102. After installation, the outer locking sleeve 1 and the inner locking sleeve 2 are stably connected with high reliability. Moreover, when disassembling, it is only necessary to remove the locking nut 301 and rotate the outer left locking sleeve 101 and the outer right locking sleeve 102. No tools such as anchor removers are needed, and disassembly is simple and quick.

[0024] like Figures 2-4 As shown, in this embodiment, a locking rod 4 is rotatably connected to the rear side of the threaded seat 3 of the outer right locking sleeve 102. The front side of the locking rod 4 abuts against the rear side of the locking nut 301. By setting the locking rod 4, when the locking nut 301 is threadedly connected to the threaded seat 3, by rotating the locking rod 4, the front side of the locking rod 4 abuts against the rear side of the locking nut 301, thereby playing a role in abutting and limiting the locking nut 301, reducing the loosening of the locking nut 301, and further increasing the reliability of the device.

[0025] like Figures 2-4 As shown, in this embodiment, a magnetic absorbing piece 401 is fixed to the front side of the locking rod 4. The front side of the magnetic absorbing piece 401 is magnetically attracted to the rear side of the locking nut 301. By setting the front side of the magnetic absorbing piece 401 to be magnetically attracted to the rear side of the locking nut 301, the locking rod 4 can be damped and attracted.

[0026] like Figures 2-4 As shown in this embodiment, the inner wall of the inner locking sleeve 2 is provided with an anti-slip groove 5, which can be used to clamp and fix the steel cable more tightly.

[0027] like Figures 2-4 As shown, in this embodiment, four rotating rods 6 are fixed to the outer wall of the locking nut 301. The four rotating rods 6 are arranged in a circular array on the outer wall of the locking nut 301 with the axis of the locking nut 301 as the center. By setting the rotating rods 6, it is easier to rotate the locking nut 301.

[0028] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: In use, by fitting the outer left locking sleeve 101, the outer right locking sleeve 102, and the inner locking sleeve 2 onto the outer wall of the steel cable, the outer left locking sleeve 101 and the outer right locking sleeve 102 are offset from each other. Then, they slide relative to each other, causing the locking strip 304 to slide and lock into the locking seat 303. Then, the inner locking sleeve 2 is hammered and pressed into the outer locking sleeve 1 to lock it to the steel cable. Then, the locking nut 301 is threaded into the threaded seat 3, thus rigidly connecting the outer left locking sleeve 101 and the outer right locking sleeve 102. The connection between the outer locking sleeve 1 and the inner locking sleeve 2 after installation is stable and reliable. The device is highly reliable and easy to disassemble. Disassembly is simple and quick, requiring only the removal of the locking nut 301 and the rotation of the outer left locking sleeve 101 and outer right locking sleeve 102. No tools such as an anchor remover are needed. The locking rod 4, when connected to the threaded seat 3, allows rotation to bring its front side against the rear side of the locking nut 301, thus limiting its movement and reducing loosening. Furthermore, the magnetic attraction plate 401, with its front side magnetically attracted to the rear side of the locking nut 301, provides damping and attraction for the locking rod 4.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A lock anchor withdrawing device for coal mine recovery roadway, comprising an outer lock sleeve (1), characterized in that, The outer lock sleeve (1) is composed of an outer left lock sleeve (101) and an outer right lock sleeve (102), an inner lock sleeve (2) is arranged in the outer lock sleeve (1), the inner lock sleeve (2) is composed of four sub-lock sleeves (201), the inner lock sleeve (2) is a whole conical structure, the outer wall of the inner lock sleeve (2) is matched with the inner cavity of the outer lock sleeve (1), the outer walls of the outer left lock sleeve (101) and the outer right lock sleeve (102) are provided with mounting assemblies, the mounting assemblies comprise two threaded seats (3) fixed on the outer walls of the outer left lock sleeve (101) and the outer right lock sleeve (102) respectively, the two threaded seats (3) are combined to form a threaded column, and the outer wall of the threaded column is threadedly connected with a locking nut (301).

2. The anchor releasing device of the coal mine gateway according to claim 1, characterized in that, The front sides of the outer left lock sleeve (101) and the outer right lock sleeve (102) are provided with connecting grooves (302), one side of the connecting groove (302) of the outer left lock sleeve (101) is fixedly provided with a clamping seat (303), and one side of the inner wall of the connecting groove (302) of the outer right lock sleeve (102) is fixedly provided with a clamping strip (304), and the clamping strip (304) and the clamping seat (303) are slidably clamped.

3. A device for releasing an anchor from a lock in a coal mine extraction roadway according to claim 2, characterised in that, The rear side of the threaded seat (3) of the outer right lock sleeve (102) is rotatably connected with a locking rod (4), and the front side of the locking rod (4) abuts against the rear side of the locking nut (301).

4. The anchor releasing device of a coal mine gateway according to claim 3, characterized in that, The front side of the locking rod (4) is fixedly provided with a magnetic piece (401), and the front side of the magnetic piece (401) is magnetically attracted to the rear side of the locking nut (301).

5. A device for releasing an anchor from a lock in a coal mine extraction roadway according to claim 4, characterised in that, The inner wall of the inner lock sleeve (2) is provided with an anti-skid groove (5).

6. A device for releasing an anchor from a lock in a coal mine extraction roadway according to claim 5, characterised in that, The outer wall of the locking nut (301) is fixedly provided with four rotating rods (6), and the four rotating rods (6) are arranged on the outer wall of the locking nut (301) in a circular array with the axis of the locking nut (301) as the center.

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