A downhole roadway point column and single body anti-toppling protection device

Abstract

This utility model provides a protective device for anchor bolts and individual anchor bolts in underground roadways, relating to the field of roadway anchor bolt support technology. It includes a connecting nut, a fastening wire rope, and a limiter. The connecting nut connects to the lower end of an existing anchor bolt at the top of the underground roadway. A mounting base is provided at the bottom of the connecting nut, and a winding mechanism is located inside the mounting base. One end of the fastening wire rope is fixed to the winding mechanism, and the other end is equipped with a safety belt buckle. The connecting wire rope is connected to the safety belt buckle via a ring. The connecting nut, fastening wire rope, connecting wire rope, and limiter of this utility model can stably connect the anchor bolt body to the existing anchor bolt inside the roadway. The device has high adaptability; the length of the connecting wire rope connected to the winding mechanism can be adjusted by winding and unwinding, facilitating the connection of the anchor bolt body to anchor bolts at different distances. The device's pulling mechanism effectively prevents the anchor bolt body from tipping over.

Description

Technical Field

[0001] This utility model relates to the field of tunnel support technology, and in particular to a tunnel support and single-unit anti-tipping protection device. Background Technology

[0002] In longwall mining faces, roadways, or mines with significant geological structural changes, wooden or individual hydraulic point pillars are used for reinforcement and support. Their advantages mainly lie in their relatively low cost, readily available materials, and rapid deployment for small or temporary support scenarios. Furthermore, under specific conditions, operation is relatively simple, and the technical requirements for workers are not as high as with some complex support equipment.

[0003] However, the use of wooden or individual hydraulic support pillars in fully mechanized mining faces and in mines with significant geological variations also presents considerable drawbacks. The most common problem is their tendency to tip over. Firstly, the underground environment is complex and unpredictable, with unstable geological conditions. If the roof pressure suddenly increases, the support pillar may tip over due to insufficient strength and stability. Secondly, inaccurate angles or uneven bases during installation can also cause them to lose balance and tip over under stress. Furthermore, over time, the materials used to make the support pillars, such as wood, are susceptible to decay and deformation due to the humid underground environment, further reducing their resistance to tipping. Once a support pillar falls, it not only fails to provide support but may also injure underground workers, creating safety hazards, disrupting normal operations, and requiring additional manpower and resources for reconstruction, increasing costs. Therefore, this invention proposes an anti-tipping protection device for underground roadway support pillars and individual pillars to address the shortcomings of existing technologies. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a point pillar and single-unit anti-tipping protection device for underground roadways. Components such as connecting nuts, fastening wire ropes, connecting wire ropes, and limiters can stably connect the point pillar body to existing anchor bolts inside the roadway. The device has high adaptability, and the length of the connecting wire rope connected to the winding mechanism can be adjusted by winding and unwinding, making it easy for the device to connect the point pillar body to anchor bolts at different distances. The pulling action of the device can effectively prevent the point pillar body from tipping over.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A point pillar and single anti-tipping protection device for underground roadways includes a connecting nut, a fastening wire rope, a connecting wire rope and a limiter. The connecting nut is connected to the lower end of an existing anchor bolt at the top of the underground roadway. The bottom of the connecting nut is provided with a mounting base. The mounting base is provided with a winding mechanism. One end of the fastening wire rope is fixed to the winding mechanism, and the other end of the fastening wire rope is provided with a safety belt buckle. The connecting wire rope is wound around the upper end of the underground roadway pillar body and fixed by a limiter. Both ends of the connecting wire rope are provided with rings, and the connecting wire rope is connected to the safety belt buckle through the rings.

[0006] A further improvement is that the top of the mounting base is welded and fixed to the bottom of the connecting nut to form an integral unit, and the mounting base has a first cavity and a second cavity inside.

[0007] A further improvement is that the winding mechanism includes a winding shaft and a limiting plate. The winding shaft is rotatably provided inside the first cavity, and the limiting plates are symmetrically provided on the winding shaft. One end of the fastening wire rope is fixed on the winding shaft between the two sets of limiting plates.

[0008] A further improvement is that: the lower end of the take-up shaft extends into the second cavity and is provided with a worm gear; a worm is rotatably provided inside the second cavity; the worm meshes with the worm gear; and a knob is provided at one end of the worm extending to the outside of the second cavity.

[0009] A further improvement is that the limiter includes a base, a rope-threading groove, and a limiting component. The base is symmetrically provided with rope-threading grooves, and the two ends of the connecting wire rope are led out from the rope-threading grooves to the side near the fastening wire rope. The top of the base is provided with a limiting component for limiting the connecting wire rope.

[0010] A further improvement is that the limiting component includes a limiting bolt and a pressure plate. The top of the base is symmetrically provided with threaded holes. The two threaded holes are connected to the two rope-threading slots. The limiting bolt is provided in the threaded holes. The lower end of the limiting bolt extends into the rope-threading slot and rotates to provide the pressure plate.

[0011] The beneficial effects of this utility model are as follows: This utility model can achieve a stable connection between the anchor body and the existing anchor rod inside the roadway by setting components such as connecting nuts, fastening wire ropes, connecting wire ropes and limiters. The device has high adaptability. The length of the connecting wire rope connected to the winding mechanism can be adjusted by winding and unwinding, which makes it easy for the device to connect the anchor body to anchor rods at different distances. The pulling of the device can effectively prevent the anchor body from tilting. It also solves the problems of easy corrosion and low safety of traditional technology that uses iron wire binding.

[0012] The components of this utility model are all detachable, and can be reused after disassembly, making it economical. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model; Figure 2 This is a three-dimensional schematic diagram of the installation structure of the winding mechanism of this utility model; Figure 3 This is a three-dimensional schematic diagram of the limiter structure of this utility model.

[0014] The components include: 1. Connecting nut; 2. Fastening wire rope; 3. Connecting wire rope; 4. Limiter; 401. Base; 402. Rope threading groove; 403. Limiting bolt; 404. Pressure plate; 5. Anchor bolt; 6. Mounting base; 601. First cavity; 602. Second cavity; 7. Winding mechanism; 701. Winding shaft; 702. Limiting plate; 703. Worm gear; 704. Worm; 705. Knob; 8. Safety belt buckle; 9. Point column body; 10. Ring. Detailed Implementation

[0015] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0016] according to Figure 1-3 As shown in the figure, this embodiment proposes a protective device for anchor posts and individual anti-tipping structures in underground roadways, including a connecting nut 1, a fastening wire rope 2, a connecting wire rope 3, and a limiter 4. The connecting nut 1 is connected to the lower end of an existing anchor rod 5 at the top of the underground roadway. The bottom of the connecting nut 1 is provided with a mounting base 6, and the mounting base 6 is provided with a winding mechanism 7. One end of the fastening wire rope 2 is fixed to the winding mechanism 7, and the other end of the fastening wire rope 2 is provided with a safety belt buckle 8. The connecting wire rope 3 is wound around the upper end of the anchor post body 9 in the underground roadway and fixed by the limiter 4. Both ends of the connecting wire rope 3 are provided with rings 10, and the connecting wire rope 3 is connected to the safety belt buckle 8 through the rings 10.

[0017] When using the underground roadway anchor and single-unit anti-tipping protection device of this utility model, firstly, connect the connecting nut 1 with the mounting base 6 at the bottom to the threaded end of the existing anchor 5 at the top of the underground roadway on one side of the anchor body 9. Then, connect one end of the fastening wire rope 2 to the winding mechanism 7. Next, wrap the connecting wire rope 3 around and fix it to the upper end of the anchor body 9, and fix the two ends of the connecting wire rope 3 by the limiter 4. Then, use the safety buckle 8 at one end of the fastening wire rope 2 to connect the rings 10 on the two ends of the connecting wire rope 3 together. After the connection is completed, control the fastening wire rope 2 to be wound and tightened by the winding mechanism 7 to achieve stable support for the anchor body 9.

[0018] The top of the mounting base 6 is welded and fixed to the bottom of the connecting nut 1 to form an integral unit. The mounting base 6 has a first cavity 601 and a second cavity 602 inside. The winding mechanism 7 includes a winding shaft 701 and a limiting plate 702. The winding shaft 701 is rotatably mounted inside the first cavity 601. The limiting plates 702 are symmetrically mounted on the winding shaft 701. One end of the fastening wire rope 2 is fixed to the winding shaft 701 between the two sets of limiting plates 702. The lower end of the winding shaft 701 extends into the second cavity 602 and is provided with a worm gear 703. A worm 704 is rotatably mounted inside the second cavity 602. The worm 704 meshes with the worm gear 703, and one end of the worm 704 extends to the outside of the second cavity 602 and is provided with a knob 705. When connecting the fastening wire rope 2 and the connecting wire rope 3, the connection operation can be facilitated by lengthening the fastening wire rope 2. After the connection operation is completed, the worm gear 704 is rotated by turning the knob 705, which drives the winding shaft 701 equipped with the worm wheel 703 to rotate, so that the fastening wire rope 2 is on the winding shaft 701 between the two limit plates 702 until the fastening wire rope 2 and the connecting wire rope 3 are straightened.

[0019] The limiter 4 includes a base 401, rope-threading slots 402, and limiting components. The base 401 has symmetrically arranged rope-threading slots 402. The two ends of the connecting wire rope 3 extend from the rope-threading slots 402 to the side near the fastening wire rope 2. The top of the base 401 has limiting components for limiting the connection of the wire rope 3. The limiting components include limiting bolts 403 and pressure plates 404. The top of the base 401 has symmetrically arranged threaded holes, two of which communicate with the two rope-threading slots 402. Limiting bolts 403 are installed within the threaded holes, and the lower ends of the limiting bolts 403 extend into the rope-threading slots 402 and rotate to accommodate the pressure plates 404. When the limiter 4 is used to fix the two ends of the wire rope 3, the two ends of the wire rope 3 are inserted into the two rope grooves 402 respectively, and then the limit bolt 403 is rotated to make the pressure plate 404 press and fix the rope ends, thereby achieving the limit. The limit can prevent the wire rope 3 from slipping.

[0020] This invention, through the inclusion of a connecting nut 1, a fastening wire rope 2, a connecting wire rope 3, and a limiter 4, enables a stable connection between the anchor body 9 and the existing anchor bolts 5 inside the roadway. The device boasts high adaptability; the connecting wire rope 3, connected to the winding mechanism, can be adjusted in length through winding and unwinding, facilitating the connection of the anchor body 9 to anchor bolts 5 at different distances. The device's pulling mechanism effectively prevents the anchor body 9 from tipping over, and also solves the problems of easy corrosion and low safety associated with traditional wire binding techniques. Furthermore, the multiple components of this invention are detachable, allowing for reuse after disassembly, resulting in good economic efficiency.

[0021] 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. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A point-support and single-unit anti-tipping protection device for underground roadways, characterized in that: Includes a connecting nut (1), a fastening wire rope (2), a connecting wire rope (3), and a limiter (4). The connecting nut (1) is connected to the lower end of an existing anchor bolt (5) at the top of the underground roadway. The bottom of the connecting nut (1) is provided with a mounting base (6). The mounting base (6) is provided with a winding mechanism (7). One end of the fastening wire rope (2) is fixed on the winding mechanism (7), and the other end of the fastening wire rope (2) is provided with a safety belt buckle (8). The connecting wire rope (3) is wrapped around the upper end of the underground roadway point column body (9) and fixed by the limiter (4). Both ends of the connecting wire rope (3) are provided with rings (10). The connecting wire rope (3) is connected to the safety belt buckle (8) through the rings (10).

2. The underground roadway point pillar and single-unit anti-tipping protection device according to claim 1, characterized in that: The top of the mounting base (6) is welded and fixed to the bottom of the connecting nut (1) to form an integral unit. The mounting base (6) has a first cavity (601) and a second cavity (602) inside.

3. The underground roadway point pillar and single-unit anti-tipping protection device according to claim 2, characterized in that: The winding mechanism (7) includes a winding shaft (701) and a limiting plate (702). The winding shaft (701) is rotatably provided inside the first cavity (601). The limiting plates (702) are symmetrically provided on the winding shaft (701). One end of the fastening wire rope (2) is fixed on the winding shaft (701) between the two sets of limiting plates (702).

4. The underground roadway point pillar and single-unit anti-tipping protection device according to claim 3, characterized in that: The lower end of the take-up shaft (701) extends into the second cavity (602) and is provided with a worm gear (703). A worm (704) is rotatably provided inside the second cavity (602). The worm (704) meshes with the worm gear (703), and a knob (705) is provided at one end of the worm (704) extending to the outside of the second cavity (602).

5. The underground roadway point pillar and single-unit anti-tipping protection device according to claim 1, characterized in that: The limiter (4) includes a base (401), a rope slot (402), and a limiting member. The base (401) is symmetrically provided with rope slots (402). The two ends of the connecting wire rope (3) are led out from the rope slots (402) to the side near the fastening wire rope (2). The top of the base (401) is provided with a limiting member for limiting the connecting wire rope (3).

6. The underground roadway point pillar and single-unit anti-tipping protection device according to claim 5, characterized in that: The limiting component includes a limiting bolt (403) and a pressure plate (404). The base (401) has symmetrical threaded holes on the top. The two threaded holes are connected to the two rope-threading slots (402). The limiting bolt (403) is provided in the threaded hole. The lower end of the limiting bolt (403) extends into the rope-threading slot (402) and rotates to provide the pressure plate (404).

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