Underground stope backfill air return shaft external escape ladder

Abstract

The application discloses a kind of external escape ladders of underground stope filling air return well, comprising: transverse guide rail assembly, set in filling air return well lower side, its tail is fixedly connected with roadway side wall, head is set in filling air return well lower side well mouth brim;Ladder frame main body, top is slidably installed on transverse guide rail assembly, so that ladder frame main body can be vertically closely in filling air return well lower side when not being used Roadway side wall on, when being used, it is slid to the head of transverse guide rail assembly, forms escape passage.The application is simple to install, and occupies small space, when being used, ladder section moves to end support frame along transverse guide rail assembly, ladder section unfolds, simple structure, unfolds quickly, reliable anti-falling, can effectively improve the safety of underground personnel emergency escape.

Description

Technical Field

[0001] This invention relates to the field of mine safety equipment technology, and in particular to an external escape ladder for a back air shaft used for filling underground mining areas. Background Technology

[0002] The underground mining area has a small space in the return air shaft, the shaft wall is damp and easily contaminated by the filling material. Traditional escape ladders are mostly installed inside the ventilation shaft, which has problems such as complicated installation, occupying the cross-section of the ventilation shaft, being easily blocked by slurry, and inconvenience in emergency deployment, making it difficult to meet the needs of underground personnel for rapid and safe escape. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides an external escape ladder for the return air shaft in underground mining areas.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows: An external escape ladder for a return air shaft in an underground mining area includes: The transverse guide rail assembly is set on the lower side of the filling return air shaft. Its tail end is fixedly connected to the sidewall of the roadway, and its head end is set on the edge of the shaft opening on the lower side of the filling return air shaft. The main body of the ladder frame is slidably mounted on the transverse guide rail assembly at the top, so that when the main body of the ladder frame is not in use, it can be vertically attached to the side wall of the roadway below the filling return air shaft. When in use, it slides to the head of the transverse guide rail assembly to form an escape passage.

[0005] The transverse guide rail assembly consists of two parallel slide rail frames, with the top of the ladder frame body fitted inside the two slide rail frames. The head of the slide rail frame is provided with a recessed support frame. When the top of the ladder frame body slides into the support frame, it will fall down and get stuck in the support frame to prevent the head of the ladder frame body from sliding during use.

[0006] The two slide rail frames are connected to each other by several horizontally placed connecting rods.

[0007] The top of the slide rail frame is equipped with a fall-prevention fixing component, which is fixedly connected to the lower side of the filling return air shaft and is used to fix the slide rail frame in the vertical direction.

[0008] The fall arrestor assembly consists of a welded fall arrestor rod and an anchored fall arrestor rod, which are vertically arranged one in front of the other and one in back. The welded fall arrestor rod is connected to the wall of the filling return air shaft. The anchored fall arrestor rod is connected to the top plate on the lower side edge of the filling return air shaft.

[0009] The ladder frame body includes: The upper and lower sections of the ladder; The bottom of the upper stair section is connected to the top of the lower stair section by a hinge.

[0010] The beneficial effects of this invention are as follows: The main body of the ladder frame is a two-section folding design, arranged on the lower side of the filling return air shaft. Normally, the upper section is flush against the tail of the transverse guide rail assembly and falls vertically down the side of the tunnel. The lower section is normally folded upwards and stored via a hinge, and unfolds downwards around the hinge after unlocking. The transverse guide rail assembly is equipped with a fall arrestor, which includes a welded fall arrestor rod and an anchored fall arrestor rod. The welded fall arrestor rod is welded to the wall of the return air shaft, and the anchored fall arrestor rod is anchored to the top plate and welded to the transverse guide rail assembly to form a whole. The transverse guide rail assembly has a support frame for limiting and preventing fall damage to the main body of the ladder frame. When the escape ladder is in use… The upper ladder section slides along the transverse guide rail assembly into the support frame, while the lower ladder section unfolds. The main body of the ladder includes an upper and lower ladder section, which are connected sequentially by hinges to form a folding structure. When unfolded, it forms a continuous escape passage. The vertical spacing between adjacent step bars is 280mm-350mm, facilitating rapid climbing. This invention is located outside the ventilation shaft, without occupying internal space or affecting return air and filling operations. The welded and anchored anti-fall fixing rods of the anti-fall fixing components are fixed to the shaft wall and top plate, respectively, providing anti-fall, anti-sway, and reliable safety. The overall structure is durable, suitable for damp and dusty underground working conditions, and significantly improves emergency escape safety. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the main structure of the ladder frame of the present invention; Figure 3 This is a diagram showing the usage state of the present invention.

[0012] In the diagram: 1-Horizontal guide rail assembly, 2-Support frame, 3-Anti-fall fixing assembly, 31-Welded anti-fall fixing rod, 32-Anchored anti-fall fixing rod, 4-Lace frame body, 41-Upper ladder section, 42-Lower ladder section, 5-Hinge. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concepts of the invention.

[0014] like Figures 1 to 3As shown, an external escape ladder for a filling return air shaft in an underground mining area includes: a transverse guide rail assembly 1, installed on the lower side of the filling return air shaft, with its tail fixedly connected to the sidewall of the roadway and its head positioned at the edge of the shaft opening on the lower side; and a ladder frame body 4, the top of which is slidably mounted on the transverse guide rail assembly 1, so that when not in use, the ladder frame body 4 can be vertically pressed against the sidewall of the roadway on the lower side of the filling return air shaft, and when in use, it slides to the head of the transverse guide rail assembly 1 to form an escape passage. The transverse guide rail assembly 1 consists of two parallel sliding rail frames 11, with the top of the ladder frame body 4 fitting inside the two sliding rail frames 11; the head of the sliding rail frame 11 is provided with a recessed support frame 2, which, when the top of the ladder frame body 4 slides into the support frame 2, will fall and lock into the support frame 2, preventing the head of the ladder frame body 4 from sliding during use. The two sliding rail frames 11 are interconnected by several horizontally placed connecting rods 12. The top of the slide rail frame 11 is equipped with a fall arresting component 3, which is fixedly connected to the lower side of the filling return air shaft to fix the slide rail frame 11 in the vertical direction. The fall arresting component 3 consists of a welded fall arresting rod 31 and an anchored fall arresting rod 32, which are vertically arranged one in front of the other. The welded fall arresting rod 31 is connected to the wall of the filling return air shaft, and the anchored fall arresting rod 32 is connected to the top plate on the lower edge of the filling return air shaft. The ladder frame body 4 includes an upper ladder section 41 and a lower ladder section 42. The bottom of the upper ladder section 41 and the top of the lower ladder section 42 are connected by a hinge 5.

[0015] Among them, the surface of the treads of the main body of the ladder frame 4 is provided with anti-slip texture or anti-slip coating; The main body of the ladder frame 4 is a two-section folding type, which is arranged on the outside of the filling return air shaft. Under normal conditions, the upper ladder section 41 is close to the end of the transverse guide rail assembly 1 and falls vertically along the side of the tunnel. The lower ladder section 42 is normally folded upward and stored through the hinge 5. After unlocking, it flips downward around the hinge and unfolds. After unlocking the hinge 5, the upper ladder section 41 is moved along the horizontal guide rail assembly 1 to the support frame 2, and the lower ladder section 42 is flipped down and unfolded around the hinge 5. The support frame 2 limits and prevents the main body of the ladder frame 4 from swaying.

[0016] The anti-fall fixing rod 31 of the anti-fall fixing component 3 is welded and fixed to the outer wall of the return air shaft, and the anchored anti-fall fixing rod 32 is anchored to the roof of the roadway. They are arranged laterally along the roof to jointly constrain the ladder frame body 4 and ensure safe and stable use.

[0017] Work process Under normal conditions, the lower ladder section 42 of the main ladder frame 4 folds upward and is stored against the side of the tunnel where the ventilation shaft is located. The latches on the hinges 5 are locked in place, without occupying the ventilation shaft cross-section or affecting production. In an emergency, the manual latch is opened, the lower ladder section 42 flips downward and unfolds, and the upper end of the upper ladder section 41 moves to the support frame 2, forming an escape ladder. After use, the lower ladder section 42 can be folded upward and reset, and the upper ladder section 41 can be moved from the support frame 2 to the other end of the transverse guide rail assembly 1 for reuse.

[0018] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. An external escape ladder for a return air shaft in an underground mining area, characterized in that, include: The transverse guide rail assembly (1) is set on the lower side of the filling return air shaft, with its tail fixedly connected to the sidewall of the roadway and its head set on the edge of the shaft opening on the lower side of the filling return air shaft. The ladder frame body (4) is slidably mounted on the transverse guide rail assembly (1) at the top, so that when the ladder frame body (4) is not in use, it can be vertically attached to the side wall of the roadway below the filling return air shaft. When in use, it slides to the head of the transverse guide rail assembly (1) to form an escape passage.

2. The external escape ladder for the return air shaft in an underground mining area according to claim 1, characterized in that, The transverse guide rail assembly (1) consists of two parallel slide rail frames (11), with the top of the ladder frame body (4) fitted inside the two slide rail frames (11). The head of the slide rail frame (11) is provided with a sunken support frame (2). When the top of the ladder frame body (4) slides into the support frame (2), it will fall and get stuck inside the support frame (2) to prevent the head of the ladder frame body (4) from sliding during use.

3. The external escape ladder for the return air shaft in an underground mining area according to claim 2, characterized in that, The two slide rail frames (11) are connected to each other by a number of horizontally placed connecting rods (12).

4. An external escape ladder for a return air shaft in an underground mining area according to claim 2, characterized in that, The top of the slide rail frame (11) is provided with a fall protection fixing component (3), which is fixedly connected to the lower side of the filling return air well and is used to fix the slide rail frame (11) in the vertical direction.

5. An external escape ladder for a return air shaft in an underground mining area according to claim 4, characterized in that, The anti-fall fixing component (3) consists of a welded anti-fall fixing rod (31) and an anchored anti-fall fixing rod (32) vertically arranged in front and behind; the welded anti-fall fixing rod (31) is connected to the wall of the filling return air well; the anchored anti-fall fixing rod (32) is connected to the top plate on the lower side edge of the filling return air well.

6. The external escape ladder for the return air shaft in an underground mining area according to claim 1, characterized in that, The ladder frame body (4) includes: The upper section (41) and the lower section (42); The bottom of the upper stair section (41) and the top of the lower stair section (42) are connected by a hinge (5).

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