A high-dip mining apparatus and method of use thereof

Abstract

The application discloses a large-dip-angle mining equipment and a use method thereof, and the equipment comprises a vehicle body, a power head assembly, an angle adjusting assembly, a supporting device, a material conveying drill rod, a drill bit and a milling bit; the vehicle body is arranged in a lower roadway; before mining operation, the angle adjusting assembly adjusts a mining angle according to a coal seam dip angle; front and rear supporting devices stabilize the vehicle body; the power head assembly drives the material conveying drill rod and the drill bit to rotate and drill along the coal seam; after drilling to an upper roadway, the drill bit is dismounted and replaced by the milling bit; the material conveying drill rod pulls back the milling bit; and the bevel gear reduction box drives the milling bit to rotate and cut coal; the equipment is convenient to move, reasonable in structure and easy to operate, can realize efficient mining of a large-dip-angle coal seam, and improves the recycling rate of large-dip-angle coal seam resources.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of large-dip-angle coal seam mining, in particular to a large-dip-angle mining equipment and a using method thereof. BACKGROUND

[0002] The large-dip-angle coal seam accounts for about 20% of the proven recoverable coal reserves in China, and most of them are high-quality coal such as coking coal and anthracite, which are difficult to mine but have high resource value. At present, the large-dip-angle coal seam mainly includes the slope coal mining method, the long-hole blasting coal mining method and the steeply inclined comprehensive mechanized coal mining method, which have made great progress in the mining of large-dip-angle coal seams, but there are still problems such as high risk coefficient, high labor intensity of workers and complex mining system.

[0003] In view of the above problems, it is urgent to provide a simple, efficient and safe large-dip-angle coal seam mining equipment and mining method to improve the large-dip-angle coal seam mining technology. SUMMARY

[0004] In view of the above technical deficiencies, the purpose of the present application is to provide a large-dip-angle mining equipment and a using method thereof, which can more safely and efficiently mine large-dip-angle coal seams.

[0005] To solve the above technical problems, the present application adopts the following technical solutions:

[0006] The present application provides a large-dip-angle mining equipment, which comprises a vehicle body provided with a track walking device and an angle adjusting assembly, the angle adjusting assembly comprises a rack fixed on the vehicle body, the rack is hinged to the bottom of the vehicle body, an angle adjusting oil cylinder for controlling the lifting amplitude of the vehicle body is arranged between the vehicle body and the rack, a front guide column for supporting the vehicle body is also hinged to the vehicle body, a cross shaft is rotatably connected to the top end of the vehicle body, two tile holders are symmetrically arranged at the two ends of the cross shaft, and the tile holders can slide along the front guide column or be tightly locked; a power head assembly capable of moving along the length direction of the vehicle body is arranged on the vehicle body, the output end of the power head assembly is connected with a drill rod, the drill rod is composed of multiple sections of material conveying drill rods and is provided with a milling head assembly at the top end thereof; a drill rod dismounting assembly for allowing the material conveying drill rod to pass through and tightly limiting the material conveying drill rod is also arranged on the vehicle body.

[0007] The milling head assembly comprises a connecting drill rod for connecting the material conveying drill rod, one end of the connecting drill rod away from the material conveying drill rod is connected with the input end of a bevel gear reducer, two outputs of the bevel gear reducer are symmetrically fixed with two rollers, the two rollers are conical and are respectively provided with left-handed blades and right-handed blades on the outer surfaces thereof; a plurality of cutting teeth are arranged beside each of the left-handed blades and the right-handed blades, a reducer protection shell is fixed on the bevel gear reducer, and a baffle device is arranged on the upper and lower ends of the reducer protection shell.

[0008] Preferably, the guard device comprises two outer cylinders fixed on the reducer protection shell, the upper end of the outer cylinder is provided with an inner cavity, and an inner cylinder is embedded in the inner cavity, a horizontal plate is arranged in the cavity of the inner cylinder, a screw is fixed on the horizontal plate by screwing, the bottom of the screw is fixed with the bottom of the inner cavity of the outer cylinder by screwing, and a compression spring is arranged between the bottom of the inner cavity of the outer cylinder and the horizontal plate, the compression spring is nested outside the screw.

[0009] Preferably, a through hole is formed in the guard plate to facilitate the installation of the screw.

[0010] Preferably, two support devices are arranged at the front and rear ends of the fuselage, the support device comprises a cylinder fixed on the support oil cylinder arranged on the fuselage, and a support plate is hinged to the output end of the support oil cylinder.

[0011] Preferably, two lifting lugs are arranged at the top end of the fuselage, and a through hole is formed in the lifting lug to allow the horizontal shaft to pass through.

[0012] The application also provides a use method of the large-inclination mining equipment, comprising the following steps:

[0013] S1, moving the equipment into the lower tunnel, loosening the bolts on the two arches to release the front guide column, controlling the action of the angle adjusting oil cylinder, adjusting the inclination angle of the fuselage to be consistent with the inclination angle of the coal seam, and controlling the front and rear support devices to support the tunnel and stabilize the fuselage;

[0014] S2, installing the drill bit on the output end of the power head assembly, and rotating and advancing the drill bit into the large-inclination coal seam under the driving of the power head assembly;

[0015] S3, when the power head assembly moves to the end of the stroke along the fuselage, the drill rod dismounting assembly is used to hold the drill bit to prevent it from falling off and separate the drill bit,

[0016] S4, controlling the power head assembly to move to the initial position at the bottom of the fuselage, connecting the material conveying drill rod between the power head assembly and the drill bit, and then repeating the above steps S3-S4;

[0017] S5, after the drill bit is pushed into the upper tunnel, the drill bit is replaced with a milling head assembly;

[0018] S6, the output end of the power head assembly rotates and back-tracts the material conveying drill rod, the frontmost section of the material conveying drill rod rotates the rollers at both ends of the milling head assembly through the bevel gear reducer, and the material conveying drill rod is sequentially dismounted to complete the reverse efficient mining.

[0019] The application has the advantages that the device adopts the track structure to move conveniently underground, the first drill bit is used to drill and then the milling bit is used to back to mining the coal seam with large inclination angle, the coal seam angle is large, the efficiency is high, the angle is adjusted conveniently, the steps are simple, the milling bit adopts the conical structure, the shaft end has good stress performance and is not easy to cause hole collapse, the drill rod dismounting assembly can be used to dismount the drill rod and prevent the material conveying drill rod drilled into the coal seam from falling to cause the equipment damage and ensure the personal safety of workers, and the guard plate is pressed against the drill hole under the compression spring to prevent the speed reducer from rotating due to the uneven stress of the two milling bits. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor.

[0021] Figure 1 A structural schematic diagram of a large-inclination mining device (milling bit assembly separation) provided for the embodiment of the present application;

[0022] Figure 2 A structural schematic diagram of an angle adjusting assembly provided for the embodiment of the present application;

[0023] Figure 3 A structural schematic diagram of a stable cross beam provided for the embodiment of the present application;

[0024] Figure 4 A structural schematic diagram of a milling bit assembly provided for the embodiment of the present application;

[0025] Figure 5 A structural schematic diagram of a stable cross beam provided for the embodiment of the present application;

[0026] Figure 6 A structural schematic diagram of a large-inclination mining device provided for the embodiment of the present application; Figure 5 An enlarged view of part I in the above figure.

[0027] Explanation of reference signs:

[0028] 1, crawler walking device, 2, support device, 2-1 support plate, 2-2, support cylinder, 3, power head assembly, 4, feed drill rod, 5, drill rod dismounting assembly, 6, drill bit, 7, angle adjusting assembly, 7-1, frame, 7-2, body, 7-3, angle adjusting cylinder, 7-4, front guide column, 7-5, stabilizing cross beam, 7-5-1, tile, 7-5-2, cross shaft, 8, milling head assembly, 8-1, cutting pick, 8-2, left-hand blade, 8-3, reducer protection shell, 8-4, right-hand blade, 8-5, bevel gear reducer, 8-6, connecting drill rod, 8-7, outer cylinder, 8-8, compression spring, 8-9, screw, 8-10, guard plate. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0030] As shown in Figures 1 to 6 , a large-dip-angle mining equipment includes a vehicle body provided with a crawler walking device and an angle adjusting assembly 7, the angle adjusting assembly 7 includes a frame 7-1 fixed on the vehicle body, the frame 7-1 is hinged to the bottom of a body 7-2, an angle adjusting cylinder 7-3 for controlling the hoisting amplitude between the body 7-2 and the vehicle body is arranged, and a front guide column 7-4 hinged to the vehicle body plays a supporting role on the body 7-2.

[0031] Referring to Figure 3 , the top end of the body 7-2 is rotationally connected to a cross shaft 7-5-2, two tiles 7-5-1 are symmetrically arranged at the two ends of the cross shaft 7-5-2, the tiles 7-5-1 can slide or tightly lock along the front guide column 7-4, and the cross shaft 7-5-2 and the two tiles 7-5-1 at the two ends thereof form a stabilizing cross beam 7-5.

[0032] The body 7-2 is provided with a power head assembly 3 capable of moving along the length direction thereof, the power head assembly 3 is arranged on a support platform, a driving motor is further arranged on the support platform, a gear is fixed to the output end of the driving motor, a rack is arranged on the body 7-2 along the length direction thereof and engaged with the gear, and the driving motor controls the movement of the support platform and the power head assembly 3 along the body 7-2.

[0033] The output end of the power head assembly 3 is connected to a drill rod, the drill rod is formed by splicing a plurality of feed drill rods 4 and is provided with a milling head assembly 8 at the top end thereof, and the body 7-2 is further provided with a drill rod dismounting assembly 5 through which the feed drill rod 4 passes and which can tightly lock the feed drill rod 4.

[0034] The milling head assembly 8 comprises a connecting drill rod 8-6 for connecting the feed drill rod 4, one end of the connecting drill rod 8-6 is connected to the input end of the bevel gear reducer 8-5, two outputs of the bevel gear reducer 8-5 are symmetrically fixed two rollers 8-11, the two rollers 8-11 are conical and have left-handed blades 8-2 and right-handed blades 8-4 on the outer surfaces thereof respectively; a plurality of cutting teeth 8-1 are arranged beside the left-handed blades 8-2 and the right-handed blades 8-4; the bevel gear reducer 8-5 is fixed with a reducer protection shell 8-3, and the upper and lower ends of the reducer protection shell 8-3 are provided with guard plate devices.

[0035] The guard plate device comprises two outer cylinders 8-7 fixed on the reducer protection shell 8-3, the upper end of the outer cylinder 8-7 is provided with an inner cavity and an inner cylinder is embedded in the inner cavity, a horizontal plate is arranged in the cavity of the inner cylinder, a screw 8-9 is threadedly fixed on the horizontal plate, the bottom of the screw 8-9 is threadedly fixed with the bottom of the inner cavity of the outer cylinder 8-7, and a compression spring 8-8 is further arranged between the bottom of the inner cavity of the outer cylinder 8-7 and the horizontal plate, the compression spring 8-8 is nested on the outer side of the screw 8-9, and the top of the two inner cylinders is fixed with a guard plate 8-10, the guard plate 8-10 is supported on the inner side of the coal hole under the action of the compression spring 8-8, and the bevel gear reducer 8-5 is prevented from rotating.

[0036] A through hole is formed in the guard plate 8-10 for facilitating installation of the screw 8-9.

[0037] The front and rear ends of the machine body 7-2 are provided with two support devices 2, the support device 2 comprises a cylinder body fixed on the machine body 7-2 and provided with a support oil cylinder 2-2, and the output end of the support oil cylinder 2-2 is hingedly connected with a support plate 2-1.

[0038] The top end of the machine body 7-2 is provided with two lifting lugs, and the lifting lugs are provided with through holes for the horizontal shaft 7-5-2 to pass through.

[0039] The feed drill rod 4 in the application is prior art disclosed in the prior art, and the drill rod dismounting assembly 5 refers to the large-diameter pressure relief drilling machine disclosed in Chinese patent CN110905420A, which discloses a dismounting device for separating drill rods.

[0040] The embodiment of the application also provides a use method of the large-dip-angle mining equipment, which comprises the following steps:

[0041] S1, moving the equipment into the lower roadway, loosening the bolts on the two tiles 7-5-1 to release the front guide column 7-4, controlling the action of the angle adjusting oil cylinder 7-3, adjusting the inclination angle of the machine body 7-2 to be consistent with the inclination angle of the coal seam, and controlling the front and rear support devices 2 to support the roadway and stabilize the machine body 7-2;

[0042] S2, install the drill bit 6 on the output end of the power head assembly 3, the power head assembly 3 drives the drill bit 6 to rotate and advance into the coal seam with large dip angle;

[0043] S3, after the power head assembly 3 moves along the machine body 7-2 to the end of the stroke, the drill pipe dismounting assembly 5 holds the drill bit 6 to prevent it from falling off and separates the drill bit 6,

[0044] S4, control the power head assembly 3 to move to the initial position at the bottom of the machine body 7-2, connect the feed drill pipe 4 between the power head assembly 3 and the drill bit 6, and then repeat the above steps S3-S4;

[0045] S5, after the drill bit 6 is pushed into the upper roadway, the drill bit 6 is replaced by the milling head assembly 8;

[0046] S6, the output end of the power head assembly 3 rotates and pulls back the feed drill pipe 4, the frontmost section of the feed drill pipe 4 drives the rollers 8-11 at both ends of the milling head assembly 8 to rotate through the bevel gear reducer 8-5, and the reverse efficient mining is completed by sequentially dismounting the feed drill pipe 4.

[0047] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A steeply inclined mining apparatus, characterized in that, The utility model provides a kind of drilling rig, including the body provided with track walking device and angle adjusting assembly (7), the angle adjusting assembly (7) includes frame (7-1) fixed on the body, the frame (7-1) is hinged to the bottom of machine body (7-2), and the machine body (7-2) is provided with angle adjusting cylinder (7-3) for controlling its hoisting amplitude between the body, and the body is further hinged with front guide column (7-4) playing the supporting role to machine body (7-2), the top end of machine body (7-2) is rotatably connected with cross shaft (7-5-2), and the both ends of cross shaft (7-5-2) are provided with two embracing tiles (7-5-1) symmetrically, the embracing tile (7-5-1) can slip or embrace tightly along front guide column (7-4);The machine body (7-2) is provided with power head assembly (3) capable of moving along its length direction, the output end of power head assembly (3) is connected with drill rod, and drill rod is spliced by multiple feed drill rods (4) and is provided with milling head assembly (8) at its top end;Machine body (7-2) is further provided with drill rod dismounting assembly (5) for feed drill rod (4) to pass through and can embrace tightly and limit it. The milling head assembly (8) includes a connecting drill rod (8-6) for connecting the feed drill rod (4), the connecting drill rod (8-6) is connected with the input end of bevel gear reducer (8-5) away from the feed drill rod (4), the two output ends of bevel gear reducer (8-5) are symmetrically fixed with two rollers (8-11), and the two rollers (8-11) are conical and are respectively provided with left-hand blade (8-2) and right-hand blade (8-4) on their outer surfaces; A plurality of cutting teeth (8-1) are provided beside the left-hand blade (8-2) and the right-hand blade (8-4), and a reducer protection shell (8-3) is fixed on the bevel gear reducer (8-5), and the upper and lower ends of the reducer protection shell (8-3) are provided with guard devices. The guard device includes two outer cylinders (8-7) fixed on the reducer protection shell (8-3), the upper end of the outer cylinder (8-7) is provided with an inner cavity and an inner cylinder is embedded in the inner cavity, a cross plate is provided in the cavity of the inner cylinder, a screw (8-9) is threadedly fixed on the cross plate, the bottom of the screw (8-9) is threadedly fixed with the bottom of the inner cavity of the outer cylinder (8-7), a compression spring (8-8) is further provided between the bottom of the inner cavity of the outer cylinder (8-7) and the cross plate, the compression spring (8-8) is nested outside the screw (8-9), and the top of the two inner cylinders is fixed with a guard plate (8-10), the guard plate (8-10) is supported on the inner side of the coal hole under the action of the compression spring (8-8), preventing the bevel gear reducer (8-5) from rotating.

2. A large-dip-angle mining apparatus as claimed in claim 1, characterised in that, A through hole is formed in the guard plate (8-10) for facilitating the installation of the screw (8-9).

3. A large-dip-angle mining apparatus as claimed in claim 2, characterised in that, The front and rear ends of the machine body (7-2) are provided with two support devices (2), the support device (2) includes a support cylinder fixed on the machine body (7-2) and a support oil cylinder (2-2), and the output end of the support oil cylinder (2-2) is hingedly connected with a support plate (2-1).

4. A large-dip-angle mining apparatus as claimed in claim 3, characterised in that, The top end of the machine body (7-2) is provided with two lifting lugs, and a through hole is formed in the lifting lug for the cross shaft (7-5-2) to pass through.

5. A method of using a large-dip-angle mining apparatus as defined in claim 4, characterized by, The method comprises the following steps: S1, moving the device into the lower roadway, loosening the bolts on the two wafer holders (7-5-1) to release the guide column (7-4), controlling the action of the angle adjusting oil cylinder (7-3), adjusting the inclination angle of the machine body (7-2) to be consistent with the inclination angle of the coal seam, and controlling the front and rear support devices (2) to press against the roadway and stabilize the machine body (7-2); S2, installing the drill bit (6) on the output end of the power head assembly (3), and rotating the drill bit (6) to advance into the high-inclination coal seam; S3, after the power head assembly (3) moves to the end of the stroke along the machine body (7-2), the drill bit (6) is held by the drill rod disassembly assembly (5) to prevent it from falling off and separating from the drill bit (6), S4, controlling the power head assembly (3) to move to the initial position at the bottom of the machine body (7-2), connecting the material conveying drill rod (4) between the power head assembly (3) and the drill bit (6), and then repeating the above steps S3-S4; S5, after the drill bit (6) is pushed into the upper roadway, the drill bit (6) is replaced with a milling head assembly (8); S6, rotating the output end of the power head assembly (3) and back-drawing the material conveying drill rod (4), the frontmost section of the material conveying drill rod (4) drives the rollers (8-11) at both ends of the milling head assembly (8) to rotate through the bevel gear reducer (8-5), and the material conveying drill rod (4) is sequentially disassembled to complete reverse and efficient mining.

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