Coal mining machine for large-dip-angle coal seam

By designing safety wheels and chute structures in the coal miner, the prevention of slipping due to faults in the coal seam in a large inclination angle is solved, and the problem of falling risks of coal miners is improved, and safety and safety operation guarantees are improved.

CN222478720UActive Publication Date: 2025-02-14宁夏红墩子煤业有限公司 +1
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Patent Information

Application Number
CN202421303267.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-07
Publication Date
2025-02-14
Estimated Expiration
2034-06-07

AI Technical Summary

Technical Problem

In large inclination coal seams, coal mining machines are prone to rapid slipping due to unforeseen failures, causing major safety accidents.

Method used

A coal mining machine for large-inclination coal seam is designed, using safety wheel and chute structure. When the coal mining machine has a risk of sliding down, the safety wheel rolls at high speed, and the slider extends into the groove through centrifugal force to realize the machinery of the coal mining machine. brake.

Benefits of technology

It effectively avoids the situation where the coal mining machine slides down due to faults, improves the safety of the working surface of the large-incline coal seam, and ensures the safe operation of the coal mining machine.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a coal mining machine for a large-dip-angle coal seam, which belongs to the technical field of coal mining and comprises a coal mining machine body and a track, and a plurality of groups of grooves are arranged on the track. The coal mining machine body is fixedly connected with a first mounting seat, the lower part of the first mounting seat is rotatably connected with a safety wheel, and the safety wheel can roll and walk on a track; a plurality of sets of sliding grooves are formed in the safety wheel, springs are fixedly connected to the interiors of the multiple sets of sliding grooves, one end of each spring is fixedly connected with a sliding block, and the sliding blocks form a sliding telescopic structure in the sliding grooves; the sliding blocks are matched with the grooves and can be inserted into the grooves. According to the coal mining machine, mechanical braking can be automatically carried out through the safety wheels when the coal mining machine body rapidly slides off, the situation that the coal mining machine body slides off due to unpredictable faults is effectively avoided, a layer of guarantee is added to safe operation of the coal mining machine body on a large-dip-angle coal seam working face, and safe production is facilitated.
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Description

Technical Field

[0001] The utility model belongs to the technical field of coal mining, and in particular relates to a coal mining machine for a coal seam with a large dip angle. Background Art

[0002] Steeply inclined coal seams are a common form of coal resource storage, and fully mechanized mining is used in steeply inclined coal seams. Due to the large inclination of the coal seams, fully mechanized mining in steeply inclined coal seams faces the problems of equipment sliding down and support tipping over. Therefore, the technical difficulty of fully mechanized mining in steeply inclined coal seams is to prevent equipment from tipping over and slipping.

[0003] At present, coal mining machines working on the faces of steeply inclined coal seams are generally equipped with anti-slip hydraulic brakes. The hydraulic brakes are required to brake reliably under steeply inclined conditions. However, coal mining machines face unforeseen faults such as sudden power outages and brake failures during operation. Once an unforeseen fault occurs, it is very easy for the brakes of the coal mining machine to fail and slide rapidly, causing major safety accidents.

[0004] Therefore, in view of the above-mentioned technical problems, it is necessary to provide a coal mining machine for a steeply inclined coal seam.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The utility model aims to provide a coal mining machine for steeply inclined coal seams, which can solve the problem that unforeseen faults may easily lead to brake failure of the coal mining machine and rapid sliding, thus causing major safety accidents.

[0007] In order to achieve the above-mentioned object, a specific embodiment of the utility model provides a coal mining machine for a steeply inclined coal seam, comprising a coal mining machine body and a track, wherein the track is provided with a plurality of groups of grooves;

[0008] The coal mining machine body is fixedly connected with a first mounting seat, and a safety wheel is rotatably connected to the lower part of the first mounting seat, and the safety wheel can roll on the track;

[0009] The safety wheel is provided with a plurality of slide grooves, each of which is fixedly connected to a spring, one end of each spring is fixedly connected to a slider, and the slider forms a sliding telescopic structure inside the slide groove;

[0010] The slide block matches the groove, and the slide block can be inserted into the interior of the groove.

[0011] In one or more embodiments of the present invention, a detachable fixing structure is provided between the first mounting seat and the safety wheel, and the safety wheel is mounted on the first mounting seat via the detachable fixing structure.

[0012] In one or more embodiments of the present invention, the detachable fixing structure includes a mounting frame, the safety wheel is rotatably connected to the mounting frame, a plurality of through holes are provided on the mounting frame, locking bolts penetrate the interiors of the plurality of through holes, and a first screw hole matching the locking bolt is provided on the first mounting seat.

[0013] In one or more embodiments of the present invention, a second mounting seat is fixedly connected to the coal mining machine body, the second mounting seat is located on the opposite side of the first mounting seat, and a second screw hole matching the locking bolt is formed on the second mounting seat.

[0014] In one or more embodiments of the present invention, a locking assembly is installed on the inner wall of the slide groove, and the locking assembly is used to lock the slide block.

[0015] In one or more embodiments of the present invention, the locking assembly includes an adjusting screw hole and an adjusting bolt, the adjusting screw hole is formed on the inner wall of the slide groove, and the adjusting bolt is threadedly connected to the inside of the adjusting screw hole.

[0016] In one or more embodiments of the present invention, a hole expansion groove is formed at one end of the adjusting screw hole, and the screw head of the adjusting bolt is located inside the hole expansion groove.

[0017] In one or more embodiments of the present invention, the length of the adjusting bolt is greater than the length of the adjusting screw hole.

[0018] In one or more embodiments of the present invention, the slider is any one of a cylinder, a cuboid or other regular polygons.

[0019] In one or more embodiments of the present invention, the cross-sectional area of ​​the groove is 1.5 to 2 times the projection area of ​​the slider on the groove.

[0020] Compared with the prior art, the utility model can automatically perform mechanical braking when the coal mining machine body slides rapidly through the safety wheel, effectively preventing the coal mining machine body from sliding due to unforeseen faults, adding a layer of protection for the safe operation of the coal mining machine body in the working face of the coal seam with a high dip angle, and is conducive to safe production. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 The structure of a coal mining machine for a large-angle coal seam in one embodiment of the utility model is shown in FIG. Figure 1 ;

[0023] Figure 2 This is an enlarged cross-sectional view of a safety wheel of a coal mining machine for a steeply inclined coal seam in one embodiment of the utility model;

[0024] Figure 3 This is a structural diagram of a safety wheel for a coal mining machine used in a large-angle coal seam in one embodiment of the utility model;

[0025] Figure 4 This is a schematic structural diagram of a safety wheel in a first state of a coal mining machine for a steeply inclined coal seam in one embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of the second state structure of a safety wheel of a coal mining machine for a steeply inclined coal seam in one embodiment of the utility model;

[0027] Figure 6 This is a schematic structural diagram of a third state of a safety wheel of a coal mining machine for a steeply inclined coal seam in one embodiment of the utility model;

[0028] Figure 7 The structure of a coal mining machine for a large-angle coal seam in one embodiment of the utility model is shown in FIG. Figure 2 .

[0029] Description of main reference numerals:

[0030] 10. Coal mining machine body; 20. Track; 21. Groove; 30. First mounting seat; 40. Safety wheel; 41. Slide groove; 42. Spring; 43. Slider; 44. Adjusting screw hole; 45. Adjusting bolt; 46. Expanding hole groove; 50. Second mounting seat; 60. Mounting frame; 61. Through hole; 62. Locking bolt. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0032] like Figures 1 to 7 As shown, a coal mining machine for steep-angle coal seams in one embodiment of the utility model includes a coal mining machine body 10 and a track 20. The track 20 is laid on the working surface of the steep-angle coal seam. The coal mining machine body 10 can move on the track 20 to perform coal mining operations in the steep-angle coal seams.

[0033] A first mounting seat 30 is fixedly connected to one side of the coal mining machine body 10 , and a safety wheel 40 is rotatably connected to the lower side of the first mounting seat 30 . The safety wheel 40 can roll on the track 20 .

[0034] The safety wheel 40 is provided with three groups of slide grooves 41 , and springs 42 are fixedly connected inside the three groups of slide grooves 41 . A slider 43 is fixedly connected to one end of the spring 42 , and the slider 43 forms a sliding telescopic structure inside the slide groove 41 .

[0035] A plurality of groups of grooves 21 are formed on the track 20 , and the sliders 43 match the grooves 21 . The sliders 43 can be inserted into the grooves 21 to lock the safety wheel 40 .

[0036] Preferably, in this embodiment, the slider 43 is preferably a cylinder, and the cross-sectional area of ​​the groove 21 is 1.5 times the projection area of ​​the slider 43 on the groove 21 , ensuring that the slider 43 can be inserted into the interior of the groove 21 .

[0037] like Figure 4 and Figure 5 As shown, specifically, when the coal mining machine body 10 loses its braking effect due to a fault, power failure, etc., and slides down quickly under the action of gravity, the safety wheel 40 will roll at high speed on the track 20. At this time, the slider 43 inside the slide 41 will be subjected to centrifugal force. When the centrifugal force is greater than the pulling force of the spring 42 on the slider 43, the slider 43 will slide out from the inner part of the slide 41. At this time, the slider 43 can be inserted into the inside of the groove 21. When the slider 43 contacts the inner wall of the groove 21, the safety wheel 40 can be stopped. At the same time, the slider 43 can exert a mechanical braking effect on the coal mining machine body 10 to prevent the coal mining machine body 10 from sliding down. In this way, the safety of the coal mining machine body 10 when operating on the working surface of the coal seam with a large dip angle can be improved, and safe operation can be guaranteed.

[0038] A detachable fixing structure is arranged between the first mounting seat 30 and the safety wheel 40, and the detachable fixing structure includes a mounting frame 60, and the safety wheel 40 is rotatably connected to the mounting frame 60. The mounting frame 60 is provided with a plurality of through holes 61, and locking bolts 62 are passed through the interiors of the plurality of through holes 61. The first mounting seat 30 is provided with a first screw hole matching the locking bolt 62.

[0039] like Figure 1 and Figure 2 As shown, the safety wheel 40 can be installed and fixed by fixing the mounting frame 60 to the bottom end of the first mounting seat 30 through the locking bolt 62, so that the mounting frame 60 can be flexibly disassembled and assembled, which is convenient for disassembly, assembly and maintenance of the safety wheel 40.

[0040] A second mounting seat 50 is also fixedly connected to the coal mining machine body 10 . The second mounting seat 50 is located on the opposite side of the first mounting seat 30 . A second screw hole matching the locking bolt 62 is formed on the second mounting seat 50 .

[0041] like Figure 1 and Figure 7 As shown, by providing a second mounting seat 50, the safety wheel 40 can be installed on both sides of the coal mining machine body 10. In this way, when facing steeply inclined coal seams in different directions, by adjusting the position of the safety wheel 40 installed on the coal mining machine body 10, the safety wheel 40 can have a mechanical braking effect on the coal mining machine body 10 on steeply inclined coal seams in different directions, thereby enhancing adaptability.

[0042] like Figure 2 As shown, a locking assembly is installed on the inner wall of the slide 41, and the locking assembly includes an adjusting screw hole 44 and an adjusting bolt 45. The adjusting screw hole 44 is opened on the inner wall of the slide 41, and the adjusting bolt 45 is threadedly connected inside the adjusting screw hole 44. The length of the adjusting bolt 45 is greater than the length of the adjusting screw hole 44. One end of the adjusting bolt 45 can be rotated and fed into the inside of the slide 41 to tighten and fix the slider 43 to achieve locking of the slider 43, so that even if the safety wheel 40 rolls at a high speed, the slider 43 cannot slide out, so that the safety wheel 40 loses the mechanical braking effect.

[0043] An expansion groove 46 is formed at one end of the adjusting screw hole 44 , and the screw head of the adjusting bolt 45 is located inside the expansion groove 46 . The screw head of the adjusting bolt 45 can be hidden inside the expansion groove 46 and will not be exposed to cause resistance to the rolling of the safety wheel 40 .

[0044] like Figure 6 As shown, specifically, when the coal mining machine body 10 needs to move quickly, the slider 43 can be tightened and fixed by adjusting the bolt 45 so that the slider 43 is locked inside and cannot be extended, so that the safety wheel 40 will not hinder the normal operation of the coal mining machine body 10.

[0045] During use, when the coal mining machine body 10 is mining at a high-angle coal seam working face, the coal mining machine body 10 moves slowly, the safety wheel 40 rolls slowly, and the slider 43 is subjected to a small centrifugal force and will not extend outward. When the coal mining machine body 10 loses its braking effect due to an unexpected situation, it will slide downward quickly. At this time, the safety wheel 40 will roll at high speed on the track 20, and the slider 43 inside the chute 41 will be subjected to centrifugal force. When the centrifugal force is greater than the pulling force of the spring 42 on the slider 43, the slider 43 will slide out from the inner part of the chute 41. At this time, the slider 43 can be inserted into the interior of the groove 21. When the slider 43 contacts the inner wall of the groove 21, the safety wheel 40 can be stopped. At the same time, the slider 43 can exert a mechanical braking effect on the coal mining machine body 10 to prevent the coal mining machine body 10 from sliding off.

[0046] The utility model can automatically perform mechanical braking when the coal mining machine body 10 slides down quickly through the safety wheel 40, effectively preventing the coal mining machine body 10 from sliding down due to unforeseen faults, adding a layer of protection for the safe operation of the coal mining machine body 10 in the working face of a coal seam with a high inclination angle, and is conducive to safe production.

[0047] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0048] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A coal mining machine for steeply inclined coal seams, comprising a coal mining machine body and a track, characterized in that: The track is provided with a plurality of groups of grooves; A first mounting seat is fixedly connected to the coal mining machine body, and a safety wheel is rotatably connected to the lower part of the first mounting seat, and the safety wheel can roll on the track; The safety wheel is provided with a plurality of groups of slide grooves, each of which is fixedly connected to a spring, one end of each spring is fixedly connected to a slider, and the slider forms a sliding telescopic structure inside the slide groove; The slide block matches the groove, and the slide block can be inserted into the interior of the groove.

2. A coal mining machine for steeply inclined coal seams according to claim 1, characterized in that: A detachable fixing structure is provided between the first mounting seat and the safety wheel, and the safety wheel is mounted on the first mounting seat via the detachable fixing structure.

3. A coal mining machine for steeply inclined coal seams according to claim 2, characterized in that: The detachable fixing structure includes a mounting frame, the safety wheel is rotatably connected to the mounting frame, the mounting frame is provided with multiple groups of through holes, the interiors of the multiple groups of through holes are penetrated by locking bolts, and the first mounting seat is provided with a first screw hole matching the locking bolt.

4. A coal mining machine for steeply inclined coal seams according to claim 3, characterized in that: The coal mining machine body is also fixedly connected with a second mounting seat, the second mounting seat is located on the opposite side of the first mounting seat, and the second mounting seat is provided with a second screw hole matching the locking bolt.

5. A coal mining machine for steeply inclined coal seams according to claim 1, characterized in that: A locking component is installed on the inner wall of the slide groove, and the locking component is used to lock the slide block.

6. A coal mining machine for steeply inclined coal seams according to claim 5, characterized in that: The locking assembly comprises an adjusting screw hole and an adjusting bolt. The adjusting screw hole is arranged on the inner wall of the slide slot, and the adjusting bolt is threadedly connected inside the adjusting screw hole.

7. A coal mining machine for steeply inclined coal seams according to claim 6, characterized in that: One end of the adjusting screw hole is provided with an expansion groove, and the screw head on the adjusting bolt is located inside the expansion groove.

8. A coal mining machine for steeply inclined coal seams according to claim 6, characterized in that: The length of the adjusting bolt is greater than the length of the adjusting screw hole.

9. A coal mining machine for steeply inclined coal seams according to claim 1, characterized in that: The slider is any one of a cylinder, a cuboid or other regular polygons.

10. A coal mining machine for steeply inclined coal seams according to claim 1, characterized in that: The cross-sectional area of ​​the groove is 1.5 to 2 times the projection area of ​​the slider on the groove.