A filling air return shaft ladder platform device suitable for the downward filling mining method

Abstract

The utility model discloses a kind of filling air return shaft ladder platform devices suitable for downward filling mining method, belong to underground filling technical field, the utility model includes filling air return shaft, several platforms are arranged inside the filling air return shaft, ladder is arranged between adjacent two platforms, the platform is mainly fixedly connected in air return shaft inboard wall by bolt, avoid the safety risk caused by welding in high altitude limited space, the upper end of the ladder is passed through U type hook, the lower end is passed through second support frame, stably fixed between two platforms, dismounting is convenient and flexible, the problem of long operation time of original welding method is solved, overall design improves installation efficiency and the convenience of maintenance, suitable for the safety operation demand of high-risk environment in well.

Description

Technical Field

[0001] This utility model belongs to the field of underground filling technology, specifically relating to a ladder platform device for a filling return air shaft applicable to the downward filling mining method. Background Technology

[0002] The backfilling system is one of the essential factors for backfill mining. Typically, the backfill material is prepared at a surface mixing plant and then transported by gravity or pressurization through pipelines in various boreholes to the backfill return air sub-section above the mining section. Finally, it reaches the panel access route through backfilling pipelines in the backfill return air shaft, completing the access route backfilling. After the backfill return air shaft is exposed, ladders and platforms need to be installed inside to install and maintain the backfill pipes. Generally, the ladder and platform components are fabricated on the surface and then installed by welding. However, because the backfill return air shaft is a confined space with a height generally greater than 4 meters, welding operations inside the shaft pose high safety risks and are relatively time-consuming, affecting subsequent construction efficiency. Utility Model Content

[0003] This invention provides a ladder platform device for a backfilling air shaft suitable for downward backfilling mining, aiming to solve the problems existing in the background art.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A ladder platform device for a backfilling return air shaft applicable to the downfilling mining method includes a backfilling return air shaft. The backfilling return air shaft contains several platforms, with ladders connecting adjacent platforms. Each platform includes a crossbeam, a checkered steel plate, a longitudinal beam, and a first support frame. The first support frame is connected to the inner wall of the backfilling return air shaft and supports the longitudinal beam. A crossbeam is provided on the upper surface of the longitudinal beam, and a checkered steel plate is laid on the crossbeam. A U-shaped hook is suspended from the lower end of one side of the crossbeam. The upper end of the ladder is suspended from the crossbeam via the U-shaped hook. A second support frame for supporting the ladder is provided on the checkered steel plate.

[0006] Furthermore, the first support frame is a triangular support frame, which is fixed to the filling return air shaft by bolts.

[0007] Furthermore, the second support frame is an angle iron, the lower end of the ladder abuts against the second support frame, and the patterned steel plate is fixed to the second support frame by bolts.

[0008] The beneficial effects of this utility model are: it uses bolt connections instead of traditional welding connections, avoiding the risks of high-altitude welding in confined spaces; the triangular supports are fixed to the well wall with bolts; and the ladder is suspended by U-shaped hooks and supported by angle irons, forming a double-stabilized structure that improves vibration resistance. This utility model allows for rapid installation, shortens operation time, and is easy to repeatedly disassemble and reassemble, reducing material consumption. It is suitable for high-altitude operations above 4 meters, reducing personnel safety risks. Attached Figure Description

[0009] Figure 1 This is a front cross-sectional view of the present invention.

[0010] Figure 2 This is a top view of the present invention.

[0011] Figure 3 This is the front view of the tripod support frame.

[0012] In the diagram, 1. Ladder, 2. Second support frame, 3. Crossbeam, 4. Patterned steel plate, 5. Longitudinal beam, 6. First support frame, 7. Bolt hole, 8. Filling pipe, 9. Filling return air shaft, 10. U-shaped hook. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0014] like Figure 1-3 As shown, a ladder platform device for a backfilling return air shaft applicable to the downfilling mining method includes a backfilling return air shaft 9, which contains several platforms. Ladders 1 are connected between adjacent platforms. Each platform includes a crossbeam 3, a patterned steel plate 4, a longitudinal beam 5, and a first support frame 6. The first support frame 6 is connected to the inner wall of the backfilling return air shaft 9 and supports the longitudinal beam 5. A crossbeam 3 is provided on the upper surface of the longitudinal beam 5. A patterned steel plate 4 is laid on the crossbeam 3, and its anti-slip texture improves the safety of operation. A U-shaped hook 10 is suspended from the lower end of one side of the crossbeam 3. The upper end of the ladder 1 is suspended from the crossbeam 3 by the U-shaped hook 10. A second support frame 2 for supporting the ladder 1 is provided on the patterned steel plate 4.

[0015] Specifically, the first support frame 6 is a triangular support frame, which is fixed to the filling return air shaft 9 by bolts to form a stable load-bearing base. The second support frame 2 is an angle iron, and the lower end of the ladder 1 abuts against the second support frame 2. The patterned steel plate 4 is fixed to the second support frame 2 by bolts to form a lower end positioning fulcrum.

[0016] In practical application, this invention first involves pre-processing two symmetrical bolt holes 7 on the inner wall of the filling return air shaft 9. During the pre-filling stage of the filling return air shaft 9, the first support frame 6 is installed with bolts at the bolt hole 7 positions on the inner wall of the filling return air shaft 9. Subsequently, the longitudinal beam 5 is installed with bolts on the first support frame 6. One of the two symmetrical longitudinal beams 5 is selected, and a U-shaped hook 10 is installed at its lower end. The connection between the first support frame 6 and the longitudinal beam 5 is further welded to ensure the stability of the connection.

[0017] After the lower layer of the return air shaft is exposed, in order to complete the maintenance of the filling pipe 8, a platform is first installed at the lower part of the return air shaft 9. The crossbeam 3 is placed above the longitudinal beam 5 to form the platform frame. Then, the patterned steel plate 4 is laid on the upper surface of the crossbeam 3. The positions of the crossbeam 3, the patterned steel plate 4, and the longitudinal beam 5 are adjusted so that the positions of the bolt holes 7 are consistent. Then, they are fixed with bolts. At this point, the lower platform is installed, forming a platform where personnel can stand safely.

[0018] Then, the second support frame 2 is bolted to the patterned steel plate 4 to form the fulcrum at the bottom of the ladder 1. The upper end of the ladder 1 is suspended from the upper U-shaped hook, and the lower end abuts against the second support frame of the lower platform. After confirming that the ladder 1 is stable, the upper platform is installed. The installation method of the upper platform is the same as that of the lower platform, the only difference being that... Figure 1 As shown, the positions of the patterned steel plate 4 and the U-shaped hook 10 are opposite to those of the lower platform. That is, if the patterned steel plate 4 and the U-shaped hook 10 of the lower platform are placed on the right side of the crossbeam 3, then the two on the upper platform need to be placed on the left side of the crossbeam 3 so that there is a gap for people to go out when they climb to the top of the ladder.

[0019] This device is mainly assembled by bolt connection. With the help of U-shaped hook 10 and second support frame 2 to stabilize ladder 1, it is easy and quick to install, reduces the safety risks of welding installation, and greatly shortens the installation time.

Claims

1. A ladder platform device for a backfilling return air shaft suitable for downward backfilling mining, comprising a backfilling return air shaft (9), characterized in that, The filling return air shaft (9) has several platforms inside, and ladders (1) are connected between adjacent platforms. Each platform includes a crossbeam (3), a patterned steel plate (4), a longitudinal beam (5), and a first support frame (6). The first support frame (6) is connected to the inner wall of the filling return air shaft (9). The first support frame (6) supports the longitudinal beam (5). A crossbeam (3) is provided on the upper surface of the longitudinal beam (5). A patterned steel plate (4) is laid on the crossbeam (3). A U-shaped hook (10) is suspended from the lower end of one side of the crossbeam (3). The upper end of the ladder (1) is suspended from the crossbeam (3) through the U-shaped hook (10). A second support frame (2) for supporting the ladder (1) is provided on the patterned steel plate (4).

2. The ladder platform device for a backfilling return air shaft applicable to the downward backfilling mining method according to claim 1, characterized in that, The first support frame (6) is a triangular support frame, which is fixed to the filling return air shaft (9) by bolts.

3. The ladder platform device for a backfilling return air shaft applicable to the downward backfilling mining method according to claim 1, characterized in that, The second support frame (2) is an angle iron, the lower end of the ladder (1) abuts against the second support frame (2), and the patterned steel plate (4) is fixed to the second support frame (2) by bolts.

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