Open-air slope mining air duct follow-up device

Abstract

The invention belongs to the technical field of coal mining. In order to solve the problem that an existing dust removal air duct cannot meet the technological requirement that an existing dust removal air duct moves forwards and backwards completely along with a transportation unit, the open-air slope mining air duct follow-up device comprises a transportation unit rigid air duct, a flexible air duct, a follow-up mechanism and an air supply air duct, and the follow-up mechanism comprises a sliding rail assembly, a steel wire rope, an electric capstan and a U-shaped frame assembly. The U-shaped frame assembly is connected with the sliding rail assembly, the flexible air duct is arranged in the U-shaped frame assembly, the electric capstan is arranged at the end, away from a mining chamber, of the side wall platform, the steel wire rope is connected with the electric capstan and the U-shaped frame assembly, the rigid air duct of the transportation unit drives the flexible air duct to move in the tunneling direction, the electric capstan rotates clockwise along with the flexible air duct, and the steel wire rope stretches. The electric winch is started to rotate anticlockwise to drive the steel wire rope and the flexible air duct to be recycled, automatic stretching and retracting of the flexible air duct are achieved, the working efficiency is improved, and the dust removal effect of a cutting working face and a mining cave opening is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mining, and in particular relates to a wind tube follower device for open-pit sidewall mining. Background Art

[0002] Open-pit coal mines refer to a type of mine where the topsoil is directly stripped off to mine coal when the coal is deposited on the surface or in shallow layers. In some areas with soft geology, landslides are prone to occur, so mining is usually carried out by mining with a gentle slope, which will produce a large amount of side coal pressure, resulting in serious vacancy and waste of coal resources.

[0003] As the main measure to solve the problem of sidewall coal compression, sidewall mining equipment has been widely used in open-pit coal mines. Sidewall mining uses continuous mining machines to gradually advance inward from the gentle slope of the sidewall to mine the sidewall coal compression. Gas and dust will be generated during the mining process. In order to ensure the safety and quality of the project, all harmful substances must be disposed of in time, so the ventilation and dust removal system of open-pit sidewall mining equipment is indispensable.

[0004] The dust removal systems currently installed on domestic sidewall mining equipment are generally fixed, and the dust removal ducts cannot meet the process requirements of completely following the forward and backward movement of the transport unit to ensure the head-on ventilation volume, thereby reducing the concentration of coal dust produced by the continuous coal mining machine. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an open-pit sidewall mining wind tube follower device with high wind tube followability.

[0006] The present invention provides an open-pit sidewall mining wind tube follower device, which is arranged on a sidewall platform and comprises: a transport unit rigid wind tube, a flexible wind tube, a follower mechanism, and an air supply wind tube. The transport unit rigid wind tube, the flexible wind tube, and the air supply wind tube are connected in sequence. The follower mechanism comprises a slide rail assembly, a steel wire rope, an electric winch, and a U-shaped frame assembly. The slide rail assembly is arranged on the sidewall platform along the excavation direction. The U-shaped frame assembly is connected to the slide rail assembly, and the U-shaped frame assembly is arranged at the bottom of the slide rail assembly. It is arranged inside the U-shaped frame assembly, and the electric winch is arranged at the end of the side platform away from the mining tunnel. One end of the steel wire rope is connected to the electric winch, and the other end passes through the U-shaped frame assembly. The rigid wind tube of the transport unit moves synchronously with the transport unit, and the rigid wind tube of the transport unit drives the flexible wind tube to move along the excavation direction. The electric winch rotates clockwise synchronously with the flexible wind tube, and the steel wire rope is stretched to start the electric winch to rotate counterclockwise, driving the steel wire rope to be recovered, thereby driving the flexible wind tube to be recovered.

[0007] Optionally, the U-shaped frame assembly includes multiple rollers, a connecting seat, a connecting block and a U-shaped frame, the U-shaped frame includes two vertical connecting rods and two transverse connecting rods, the two vertical connecting rods are parallel and perpendicular to the side platform, the two transverse connecting rods are parallel and arranged between the two vertical connecting rods, and perpendicular to the vertical connecting rods, the connecting block is rotatably connected to the vertical connecting rod at one end toward the side platform, the connecting seat is arranged at one end of the connecting block away from the vertical connecting rod, and the rollers are arranged on both sides of the connecting seat, and the rollers are arranged in the slide rail assembly.

[0008] Optionally, the two vertical connecting rods and the two horizontal connecting rods are both provided with circular rings, and the flexible air cylinder is provided with hooks at positions corresponding to the circular rings on the circumference, and the hooks are suitable for connecting with the circular rings;

[0009] The steel wire rope passes through the ring on the transverse connecting rod close to the side platform.

[0010] Optionally, the slide rail assembly includes two slide rails and multiple fixed frames, the number of the fixed frames is the same as the number of the vertical connecting rods, the multiple fixed frames are evenly arranged on the side platform, and are in two parallel rows along the excavation direction, the two slide rails are respectively arranged in the two rows of fixed frames, each of the fixed frames is provided with two rollers, and the two rollers are arranged side by side in the slide rail along the excavation direction.

[0011] Optionally, the slide rail assembly further includes a plurality of limit members, the number of the limit members is twice the number of the vertical connecting rods, the limit members are vertically arranged at both ends of the fixed frame along the excavation direction, and one end of the limit member extends into the slide rail.

[0012] Optionally, the distance between the two limiting members provided on each of the fixing frames is greater than the sum of the diameters of the two rollers.

[0013] Optionally, an opening is provided at one end of the U-shaped frame away from the side platform.

[0014] Optionally, a connecting piece is provided between the rigid wind tube of the transport unit and the flexible wind tube.

[0015] Compared with the prior art, the technical solution provided by the embodiment of the present invention has the following beneficial effects:

[0016] The embodiment of the present invention provides an open-pit sidewall mining wind duct follower device, which, by arranging a rigid wind duct of a transport unit, enables the flexible wind duct to extend with the movement of the rigid wind duct of the transport unit to ensure air supply to the mine opening, and by arranging an electric winch and a wire rope, one end of the wire rope is connected to the electric winch, and the other end passes through a U-shaped frame assembly and is connected to the forward end of the U-shaped frame assembly. Starting the electric winch to rotate counterclockwise can drive the wire rope to be recovered, and the wire rope drives the U-shaped frame assembly to retract, thereby driving the flexible wind duct to be recovered, thereby realizing automatic extension and retraction of the flexible wind duct, improving work efficiency, and realizing semi-automatic and quick operation, realizing uninterrupted connection between the air supply fan and the flexible wind duct, ensuring that the air supply volume of the entire mine opening is maintained constant, thereby ensuring the dust removal effect of the cutting working face and the mine opening, with a compact overall structure and small space occupancy, solving the problem that when the air supply equipment of the existing dust removal system is external, the wind duct has insufficient followability, resulting in air leakage or a sudden change in the air supply volume in the mine opening, so that the dust removal effect of the system cannot meet the equipment requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 It is a structural schematic diagram of a wind tube follower device for open-pit sidewall mining according to an embodiment of the present invention;

[0020] Figure 2 It is a schematic structural diagram of a wind tube follower device for open-pit sidewall mining according to an embodiment of the present invention installed on a sidewall platform and fully extended;

[0021] Figure 3 It is a schematic structural diagram of a wind tube follower device for open-pit sidewall mining according to an embodiment of the present invention installed on a sidewall platform and fully retracted;

[0022] Figure 4 This is a schematic structural diagram of a U-shaped frame assembly according to an embodiment of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the slide rail assembly according to an embodiment of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the installation of the roller and the connecting seat according to an embodiment of the present invention.

[0025] Among them, 1. Rigid air duct of transport unit; 2. Connecting parts; 3. Flexible air duct; 4. U-shaped frame assembly; 4.1. Roller; 4.2. Connecting seat; 4.3. Connecting block; 4.4. U-shaped frame; 4.4.1. Vertical connecting rod; 4.4.2. Horizontal connecting rod; 4.5. Ring; 5. Slide rail assembly; 5.1. Slide rail; 5.2. Fixed frame; 5.3. Limiting parts; 6. Air supply air duct; 7. Wire rope; 8. Electric winch; 9. Mounting bracket; 10. Side platform. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Reference Figures 1 to 6 As shown, this embodiment provides an open-pit sidewall mining wind tube follower device, which is arranged on a sidewall platform 10 and includes a transport unit rigid wind tube 1, a flexible wind tube 3, a following mechanism and an air supply wind tube 6.

[0029] Among them, refer to Figure 1 , Figure 2 and Figure 3As shown, the rigid wind duct 1, the flexible wind duct 3 and the air supply wind duct 6 of the transport unit are connected in sequence, and the following mechanism includes a slide rail assembly 5, a wire rope 7, an electric winch 8 and a U-frame assembly 4. The slide rail assembly 5 is arranged on the side platform 10 along the excavation direction, the U-frame assembly 4 is connected to the slide rail assembly 5, and the U-frame assembly 4 is arranged at the bottom of the slide rail assembly 5, the flexible wind duct 3 is arranged inside the U-frame assembly 4, the electric winch 8 is arranged at one end of the side platform 10 away from the mining tunnel, one end of the wire rope 7 is connected to the electric winch 8, and the other end passes through the U-frame assembly 4, the rigid wind duct 1 of the transport unit moves synchronously with the transport unit, the rigid wind duct 1 of the transport unit drives the flexible wind duct 3 to move in the excavation direction, the electric winch 8 rotates synchronously with the flexible wind duct 3 clockwise, the wire rope 7 is stretched, and the electric winch 8 is started to rotate counterclockwise, driving the wire rope 7 to retract, so as to drive the flexible wind duct 3 to retract. Specifically, the air supply duct 6 is a steel duct, which is arranged on the side platform 10. The rigid duct 1 of the transport unit is arranged on the transport unit and moves synchronously with the transport unit. It can be continuously overlapped as the excavation depth changes. The air inlet of the rigid duct 1 of the transport unit is connected to the air outlet of the flexible duct 3, and the air inlet of the flexible duct 3 is connected to the air outlet of the air supply duct 6, thereby forming an air supply system for open-pit side mining. The slide rail assembly 5 is arranged on the side platform 10 along the excavation direction and is connected to the U-shaped frame assembly 4, so that the U-shaped frame assembly 4 can reciprocate along the excavation direction. By arranging the rigid duct 1 of the transport unit, the flexible duct 3 can be extended with the movement of the rigid duct 1 of the transport unit to ensure air supply to the mine entrance. By arranging an electric winch 8 and a wire rope 7, one end of the wire rope 7 is connected to The electric winch 8 is connected, and the other end passes through the U-frame assembly 4 and is connected to the forward end of the U-frame assembly 4. Starting the electric winch 8 and rotating it counterclockwise can drive the wire rope 7 to be recovered, and the wire rope 7 drives the U-frame assembly 4 to retract, thereby driving the flexible air duct 3 to be recovered. The follow-up device provided in this embodiment realizes the automatic extension and retraction of the flexible air duct 3, improves the working efficiency, and realizes semi-automatic and quick operation, and realizes the uninterrupted connection between the air supply fan and the flexible air duct 3, ensuring that the air supply volume of the entire mining tunnel remains constant, thereby ensuring the dust removal effect of the cutting working face and the mining tunnel mouth. The overall structure is compact and occupies little space. It solves the problem that when the air supply equipment of the existing dust removal system is external, the wind duct is not sufficiently followed, resulting in air leakage or a sudden change in the air supply volume in the mining tunnel, so that the dust removal effect of the system cannot meet the equipment requirements.

[0030] In order to ensure stable installation of the electric winch 8 , a mounting bracket 9 is provided at the bottom of the side platform 10 , and the electric winch 8 is arranged on the mounting bracket 9 .

[0031] Further, see Figure 4 and Figure 6As shown, the U-shaped frame assembly 4 includes a plurality of rollers 4.1, a connecting seat 4.2, a connecting block 4.3 and a U-shaped frame 4.4. The U-shaped frame 4.4 includes two vertical connecting rods 4.4.1 and two horizontal connecting rods 4.4.2. The two vertical connecting rods 4.4.1 are parallel and perpendicular to the side platform 10. The two horizontal connecting rods 4.4.2 are parallel and arranged between the two vertical connecting rods 4.4.1 and perpendicular to the vertical connecting rods 4.4.1. The connecting block 4.3 is rotatably connected to the vertical connecting rod 4.4.1 at one end toward the side platform 10. The connecting seat 4.2 is arranged at one end of the connecting block 4.3 away from the vertical connecting rod 4.4.1, and rollers 4.1 are arranged on both sides of the connecting seat 4.2. The rollers 4.1 are arranged in the slide rail assembly 5. Specifically, the two vertical connecting rods 4.4.1 are arranged perpendicular to the side platform 10, and the two horizontal connecting rods 4.4.2 are arranged in parallel and are both arranged between the two vertical connecting rods 4.4.1. The horizontal connecting rod 4.4.2 away from the side platform 10 and the two vertical connecting rods 4.4.1 form a space that can accommodate the flexible air duct 3. The ends of the two vertical connecting rods 4.4.1 facing the side platform 10 are connected with connecting seats 4.2. The connecting seats 4.2 and the vertical connecting rods 4.4.1 are rotatably connected by connecting blocks 4.3, so that when the U-shaped frame 4.4 is extended, it can swing along the excavation direction with the extension of the flexible air duct 3 to prevent the U-shaped frame 4.4 from deformation. Rollers 4.1 are arranged on both sides of each connecting seat 4.2, and the rollers 4.1 are arranged in the slide rail assembly 5, so that the U-shaped frame assembly 4 can move along the extension direction of the slide rail assembly 5.

[0032] Further, see Figure 4 As shown, two vertical connecting rods 4.4.1 and two horizontal connecting rods 4.4.2 are provided with circular rings 4.5, and hooks are provided at positions corresponding to the circular rings 4.5 on the circumference of the flexible wind tube 3, and the hooks are suitable for connecting with the circular rings 4.5, and the steel wire rope 7 passes through the circular rings 4.5 on the horizontal connecting rods 4.4.2 near the side platform 10. Specifically, the flexible wind tube 3 is connected with the circular rings 4.5 on the U-shaped frame 4.4 through the hooks, thereby realizing the connection between the flexible wind tube 3 and the U-shaped frame 4.4, and the circular rings 4.5 on the horizontal connecting rods 4.4.2 near the side platform 10 are suitable for the steel wire rope 7 to pass through, realizing the connection between the steel wire rope 7 and the U-shaped frame 4.4, facilitating the start of the electric winch 8 to rotate counterclockwise, driving the steel wire rope 7 to be recovered, and the steel wire rope 7 drives the U-shaped frame assembly 4 to retract, thereby realizing the recovery of the flexible wind tube 3.

[0033] Reference Figure 5As shown, the slide rail assembly 5 includes two slide rails 5.1 and a plurality of fixed frames 5.2. The number of the fixed frames 5.2 is the same as the number of the vertical connecting rods 4.4.1. The plurality of fixed frames 5.2 are evenly arranged on the side platform 10 and are arranged in two parallel rows along the excavation direction. The two slide rails 5.1 are respectively arranged in the two rows of fixed frames 5.2. Two rollers 4.1 are arranged in each fixed frame 5.2. The two rollers 4.1 are arranged side by side in the slide rail 5.1 along the excavation direction. Specifically, two slide rails 5.1 are arranged parallel to the bottom of the side platform 10 along the excavation direction, and the distance between the two slide rails 5.1 is equal to the width of the U-shaped frame 4.4. The fixed frame 5.2 is a frame structure with an opening at the bottom. The slide rails 5.1 are placed inside the fixed frame 5.2. Two rollers 4.1 are arranged side by side in the slide rails 5.1 along the excavation direction. The connecting rod connecting the connecting seat 4.2 and the connecting block 4.3 extends out of the opening at the bottom of the fixed frame 5.2, so that both rollers 4.1 can be placed in the fixed frame 5.2, so that the U-shaped frame 4.4 can move along the slide rails 5.1 through the rollers 4.1.

[0034] For further information, please refer to Figure 5 As shown, the slide rail assembly 5 also includes a plurality of limit members 5.3, the number of which is twice the number of the vertical connecting rods 4.4.1, the limit members 5.3 are vertically arranged at both ends of the fixed frame 5.2 along the excavation direction, and one end of the limit member 5.3 extends into the slide rail 5.1, and the distance between the two limit members 5.3 arranged on each fixed frame 5.2 is greater than the sum of the diameters of the two rollers 4.1. Specifically, the limit member 5.3 is a bolt, the limit member 5.3 is an opening through the bottom of the fixed frame 5.2, and is locked into the slide rail 5.1 by a nut, and two limit members 5.3 are arranged in each fixed frame 5.2, and the two limit members 5.3 respectively limit the two rollers 4.1 in the fixed frame 5.2 to prevent the rollers 4.1 from leaving the slide rail 5.1 along the excavation direction, and the slide rail assembly 5 and the U-shaped frame assembly 4 have a compact structure, small space occupation and light weight, which improves the sliding efficiency and facilitates the flexible wind tube 3 to perform telescopic movement.

[0035] Reference Figure 4 As shown, in order to facilitate the disassembly, assembly and adjustment of the flexible air duct 3, an opening is provided at one end of the U-shaped frame 4.4 away from the side platform 10.

[0036] Reference Figure 2 and Figure 3 As shown, a connector 2 is provided between the rigid wind tube 1 and the flexible wind tube 3 of the transport unit. The connector 2 can firmly connect the rigid wind tube 1 and the flexible wind tube 3 of the transport unit to prevent loosening or falling off due to external force, thereby ensuring the stability and safety of the overall device. When the transport unit stops moving, the rigid wind tube 1 of the transport unit drives the flexible wind tube 3 to extend into the mining tunnel (such as Figure 2As shown), at this time, the connector 2 is disassembled, so that the rigid wind tube 1 and the flexible wind tube 3 of the transport unit are separated, and the electric winch 8 is started to rotate counterclockwise, and the electric winch 8 drives the wire rope 7 to retract, thereby driving the U-shaped frame assembly 4 and the flexible wind tube 3 to retract (as shown in FIG. Figure 3 shown).

[0037] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0038] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments described herein, but should conform to the widest scope consistent with the principles and novel features invented herein.

Claims

1. A wind tube follower device for open-pit sidewall mining, arranged on a sidewall platform (10), characterized in that: The invention comprises a transport unit rigid wind tube (1), a flexible wind tube (3), a following mechanism, and an air supply wind tube (6); the transport unit rigid wind tube (1), the flexible wind tube (3), and the air supply wind tube (6) are connected in sequence; the following mechanism comprises a slide rail assembly (5), a steel wire rope (7), an electric winch (8), and a U-shaped frame assembly (4); the slide rail assembly (5) is arranged on the sidewall platform (10) along the excavation direction; the U-shaped frame assembly (4) is connected to the slide rail assembly (5), and the U-shaped frame assembly (4) is arranged at the bottom of the slide rail assembly (5); the flexible wind tube (3) is arranged on the U-shaped frame assembly (4); ), the electric winch (8) is arranged at one end of the side platform (10) away from the mining tunnel, one end of the steel wire rope (7) is connected to the electric winch (8), and the other end passes through the U-shaped frame assembly (4), the rigid wind tube (1) of the transport unit moves synchronously with the transport unit, the rigid wind tube (1) of the transport unit drives the flexible wind tube (3) to move along the excavation direction, the electric winch (8) rotates clockwise synchronously with the flexible wind tube (3), the steel wire rope (7) stretches, and the electric winch (8) is started to rotate counterclockwise, driving the steel wire rope (7) to be recovered, thereby driving the flexible wind tube (3) to be recovered.

2. The open-pit sidewall mining wind tube follower device according to claim 1 is characterized in that: The U-shaped frame assembly (4) comprises a plurality of rollers (4.1), a connecting seat (4.2), a connecting block (4.3) and a U-shaped frame (4.4); the U-shaped frame (4.4) comprises two vertical connecting rods (4.4.1) and two horizontal connecting rods (4.4.2); the two vertical connecting rods (4.4.1) are parallel and arranged perpendicular to the side platform (10); the two horizontal connecting rods (4.4.2) are arranged parallel between the two vertical connecting rods (4.4.1) , and is arranged perpendicularly to the vertical connecting rod (4.4.1), the connecting block (4.3) is rotatably connected to one end of the vertical connecting rod (4.4.1) toward the side platform (10), the connecting seat (4.2) is arranged at one end of the connecting block (4.3) away from the vertical connecting rod (4.4.1), and the rollers (4.1) are arranged on both sides of the connecting seat (4.2), and the rollers (4.1) are arranged in the slide rail assembly (5).

3. The open-pit sidewall mining wind tube follower device according to claim 2 is characterized in that: The two vertical connecting rods (4.4.1) and the two horizontal connecting rods (4.4.2) are both provided with a circular ring (4.5), and a hook is provided at a position corresponding to the circular ring (4.5) on the circumference of the flexible air cylinder (3), and the hook is suitable for connecting with the circular ring (4.5); The steel wire rope (7) passes through the circular ring (4.5) on the transverse connecting rod (4.4.2) close to the side platform (10).

4. The open-pit sidewall mining wind tube follower device according to claim 2 is characterized in that: The slide rail assembly (5) comprises two slide rails (5.1) and a plurality of fixed frames (5.2), the number of the fixed frames (5.2) being the same as the number of the vertical connecting rods (4.4.1), the plurality of fixed frames (5.2) being evenly arranged on the sidewall platform (10) and arranged in two parallel rows along the excavation direction, the two slide rails (5.1) being respectively arranged in the two rows of fixed frames (5.2), each of the fixed frames (5.2) being provided with two rollers (4.1), and the two rollers (4.1) being arranged side by side in the slide rail (5.1) along the excavation direction.

5. The open-pit sidewall mining wind tube follower device according to claim 4 is characterized in that: The slide rail assembly (5) further comprises a plurality of limit members (5.3), the number of the limit members (5.3) being twice the number of the vertical connecting rods (4.4.1), the limit members (5.3) being vertically arranged at both ends of the fixing frame (5.2) along the excavation direction, and one end of the limit member (5.3) extending into the slide rail (5.1).

6. The open-pit sidewall mining wind tube follower device according to claim 5 is characterized in that: The distance between the two limiting members (5.3) arranged on each of the fixing frames (5.2) is greater than the sum of the diameters of the two rollers (4.1).

7. The open-pit sidewall mining wind tube follower device according to claim 2 is characterized in that: An opening is provided at one end of the U-shaped frame (4.4) away from the sidewall platform (10).

8. The open-pit sidewall mining wind tube follower device according to claim 1 is characterized in that: A connecting piece (2) is provided between the rigid wind tube (1) of the transport unit and the flexible wind tube (3).

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