CN111535807B - Coal mining system - Google Patents
Coal mining system Download PDFInfo
- Publication number
- CN111535807B CN111535807B CN202010392121.0A CN202010392121A CN111535807B CN 111535807 B CN111535807 B CN 111535807B CN 202010392121 A CN202010392121 A CN 202010392121A CN 111535807 B CN111535807 B CN 111535807B
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- base
- rod body
- support
- rod
- coal mining
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C27/00—Machines which completely free the mineral from the seam
- E21C27/20—Mineral freed by means not involving slitting
- E21C27/30—Mineral freed by means not involving slitting by jaws, buckets or scoops that scoop-out the mineral
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/66—Machines for making slits with additional arrangements for drilling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C29/00—Propulsion of machines for slitting or completely freeing the mineral from the seam
- E21C29/22—Propulsion of machines for slitting or completely freeing the mineral from the seam by wheels, endless tracks or the like
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
- E21C31/08—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for adjusting parts of the machines
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/20—General features of equipment for removal of chippings, e.g. for loading on conveyor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
- E21D23/0034—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face comprising a goaf shield articulated to a base member
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
Abstract
The invention provides a coal mining system which comprises an N00 scraper conveyor, an end bracket, a waste rock blocking bracket, a plurality of middle brackets, two groups of transition brackets and two groups of drilling, joint cutting and drilling machines. The front end of the base of the end support is provided with a hook machine, and the hook machine comprises a base, a rotary table, a first rod body, a second rod body, a grab bucket, a connecting rod assembly and a driving assembly. The rotary table can be horizontally and rotatably arranged on the base. The rear end of the first rod body can be vertically and rotatably arranged on the rotary table. The rear end of the second rod body can be vertically and rotatably connected to the front end of the first rod body. The grab bucket can be vertically and rotatably connected to the front end of the second rod body, and a breaking hammer is arranged on the grab bucket. The connecting rod assembly is connected between the grab bucket and the front end of the second rod body. The driving assembly comprises a first driving piece, a second driving piece and a third driving piece. The first driving piece is arranged between the rotary table and the front side of the first rod body. The second driving piece is arranged between the rear side of the first rod body and the rear end of the second rod body. The third driving piece is arranged between the rear side of the second rod body and the connecting rod assembly.
Description
Technical Field
The invention relates to the technical field of coal mining systems, in particular to a coal mining system using a hook machine, which is applied to an N00 construction method.
Background
At present, a 121 construction method commonly adopted in the coal industry needs to reserve coal pillars and advance tunneling of a roadway, so that a large amount of coal resources are wasted; and along with the improvement of coal production technology, the problem of tension in mining and taking over is increasingly highlighted. Although a 111 construction method taking gob-side entry retaining as a core technology does not need to retain coal pillars, the 111 construction method also needs to face the problems of mining replacement shortage and filling roadway-side support cost, the coal mining technology is widely applied for more than 200 years, and is gradually not suitable for the green, economic and efficient mining requirements of coal in China at present, and based on the method, a coal pillar-free mining method taking an N00 construction method as a main construction method is provided, namely, the mining of N working faces does not need to be tunneled and coal pillars are not retained, but the method is limited by the existing mining equipment at present, and a reversed loader, a crusher, a scraper and the like exist at a machine head, so that cross-roadway coal cutting cannot be carried out during coal mining, certain difficulty exists in realizing the conception, and large-scale popularization of the scientific mining method is blocked.
Disclosure of Invention
It is a primary object of the present invention to overcome at least one of the above-mentioned deficiencies of the prior art and to provide a hook machine that enables coal mining at the head of a coal mining system.
It is another primary object of the present invention to overcome at least one of the above-mentioned deficiencies of the prior art and to provide a coal mining system having the above-mentioned hooking machine.
In order to achieve the purpose, the invention adopts the following technical scheme:
according to one aspect of the present invention, a coal mining system is provided. The coal mining system comprises an N00 scraper conveyor, an end support, a waste rock blocking support, a plurality of middle supports, two groups of transition supports and two groups of drilling and lancing drilling machines. The N00 scraper conveyor has a head and a tail. The end support is arranged on one side of the machine head of the N00 scraper conveyor, a hook machine is arranged at the front end of the base of the end support, and the hook machine comprises a base, a rotary table, a first rod body, a second rod body, a grab bucket, a connecting rod assembly and a driving assembly. The rotary table can be horizontally and rotatably arranged on the base. The rear end of the first rod body can be vertically and rotatably arranged on the rotary table. The rear end of the second rod body can be vertically and rotatably connected to the front end of the first rod body. The grab bucket can be vertically and rotatably connected to the front end of the second rod body, and a breaking hammer is arranged on the grab bucket. The connecting rod assembly is connected between the grab bucket and the front end of the second rod body. The driving assembly comprises a first driving piece, a second driving piece and a third driving piece. The first driving piece is arranged between the rotary table and the front side of the first rod body. The second driving piece is arranged between the rear side of the first rod body and the rear end of the second rod body. The third driving piece is arranged between the rear side of the second rod body and the connecting rod assembly. The waste rock blocking support is arranged on one side of the tail of the N00 scraper conveyor. The plurality of middle supports are arranged on the rear side of the N00 scraper conveyor in the mining direction, and the plurality of middle supports are located between the end support and the waste rock blocking support. The two groups of transition supports are arranged on the rear side of the N00 scraper conveyor in the mining direction, one group of transition supports are positioned between the middle support and the end supports, and the other group of transition supports are positioned between the middle support and the waste rock blocking supports. The two groups of drilling and slitting drilling machines are arranged on the rear side of the N00 scraper conveyor in the mining direction, one group of drilling and slitting drilling machines are located between the end bracket and one group of transition brackets, and the other group of drilling and slitting drilling machines are located between the waste rock blocking bracket and the other group of transition brackets.
According to one embodiment of the present invention, the base is provided with an offset weight structure such that the center of gravity of the base is located at the rear side of the second rod. And/or the rear end of the first rod body is vertically and rotatably arranged on the rotary table through a first bearing. And/or the grab bucket is vertically and rotatably connected to the front end of the second rod body through a third bearing.
According to one embodiment of the present invention, the first driving member is a first hydraulic cylinder, the first hydraulic cylinder includes a first cylinder body and a first cylinder rod, the first cylinder body is rotatably connected to the turntable, and the first cylinder rod is telescopically arranged in the first cylinder body and rotatably connected to the front side of the first rod body; and/or the second driving part is a second hydraulic cylinder, the second hydraulic cylinder comprises a second cylinder body and a second cylinder rod, the second cylinder body is rotatably connected to the rear side of the first rod body, and the second cylinder rod is telescopically arranged in the second cylinder body and rotatably connected to the rear end of the second rod body; and/or, the third driving piece is a third hydraulic cylinder, the third hydraulic cylinder comprises a third cylinder body and a third cylinder rod, the third cylinder body is rotatably connected to the rear side of the second rod body, and the third cylinder rod is telescopically arranged in the third cylinder body and rotatably connected to the connecting rod assembly.
According to one embodiment of the invention, the hooking machine further comprises a sliding rail, and the base is slidably arranged on the sliding rail.
According to one embodiment of the invention, the head support further comprises a first support beam, a second support beam, a shield beam and a displacement device. The first supporting beam is arranged above the base through a first supporting piece. The second supporting beam is arranged above the base through a second supporting piece, and the front end of the second supporting beam is connected to the rear end of the first supporting beam. The shield beam is arranged above the base and connected to the rear end of the second supporting beam. The pushing device is arranged on the base.
According to one embodiment of the invention, the gangue stopping bracket comprises a base, a gangue stopping plate, a top beam, a front canopy, a connecting rod assembly and a pushing device. The waste rock blocking plate is arranged on the side face of the base. The top beam is arranged above the base through a support. The front cantilever is telescopically arranged at the front end of the top beam. The connecting rod assembly is connected between the rear end of the top beam and the base. The pushing device is arranged on the base.
According to one embodiment of the invention, the intermediate support comprises a base, a shield beam, a roof beam, a forepoling bar, a connecting rod assembly and a pusher jack. The shield beam is arranged above the base. The top beam is arranged above the base through a support, and the rear end of the top beam is connected to the front end of the shield beam. The front cantilever is telescopically arranged at the front end of the top beam. The connecting rod assembly is connected between the shield beam and the base. The pushing device is arranged on the base.
According to one embodiment of the invention, the transition support comprises a base, a shield beam, a top beam, a front canopy, a connecting rod assembly and a pusher jack. The shield beam is arranged above the base. The top beam is arranged above the base through a support, and the rear end of the top beam is connected to the front end of the shield beam. The front cantilever is telescopically arranged at the front end of the top beam. The connecting rod assembly is connected between the shield beam and the base. The pushing device is arranged on the base.
According to one embodiment of the invention, the drill-slitting drill comprises a cradle, a plurality of slitting machines, and a plurality of drilling machines. Each joint cutter comprises a joint cutting rod body, a joint cutting drill rod and a power device. The joint cutting rod body is arranged on the bracket. The joint cutting drill rod is arranged on the joint cutting rod body and extends out of the front end of the joint cutting rod body. The power device is connected to the lancing rod body in a transmission manner. Each drilling machine comprises a drilling rod body, a drilling rod and a power device. The drilling rod body is arranged on the support. The drilling drill rod is arranged on the drilling rod body and extends out of the front end of the drilling rod body. The power device is connected to the drilling rod body in a transmission mode.
According to the technical scheme, the coal mining system provided by the invention has the advantages and positive effects that:
the end support of the coal mining system provided by the invention is provided with the hook machine, and the grab bucket and the hammer can be switched by utilizing the hook machine to realize coal breaking and loading in a roadway. The invention realizes that the tunnel expansion coal mining is carried out by using the hook machine at the head, the tunnel is cut by using the coal cutter at the tail, and the tunnel is excavated by mining, thereby overcoming the contradiction that the tunnel needs to be excavated in the prior coal mining, and realizing the scientific coal mining method that the tunnel does not need to be excavated in the coal mining by improving the mechanical equipment.
Drawings
Various objects, features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:
fig. 1 is a front view of a hooking machine according to the present invention;
FIG. 2 is a top view of the hook machine shown in FIG. 1;
FIG. 3 is a top view of a coal mining system in accordance with the present invention;
FIG. 4 is a front view of the coal mining system shown in FIG. 3;
FIG. 5 is a front view of a head support of the coal mining system shown in FIG. 4;
FIG. 6 is a front view of a mine support of the coal mining system shown in FIG. 4;
FIG. 7 is a top view of the mine spoil carrier shown in FIG. 6;
FIG. 8 is a front view of an intermediate support of the coal mining system shown in FIG. 4;
FIG. 9 is a top view of the intermediate bracket shown in FIG. 8;
FIG. 10 is a front view of a transition support of the coal mining system shown in FIG. 4;
FIG. 11 is a top view of the transition support shown in FIG. 10;
FIG. 12 is a front view of a drill-cutter rig of the coal mining system shown in FIG. 4;
fig. 13 is a top view of the drill-slitting drill shown in fig. 12.
The reference numerals are explained below:
1. a grab bucket; n00 flight;
2. a third bearing; 33, a waste rock blocking bracket;
3. a connecting rod assembly; 34. a waste rock blocking plate;
4. a first hydraulic cylinder; a support member;
4' a second hydraulic cylinder; a front cantilever;
4'. a third hydraulic cylinder; a top beam;
5. a second rod body; a pusher jack;
6. a rotating unit; a rear extension beam;
7. a first rod body; 40, a connecting rod assembly;
8. a first bearing; a base;
9. a turntable; a shield beam;
10. a base; a top beam;
11. a slide rail; a base;
12. a front cantilever; 45. a connecting rod assembly;
13. a first support beam; a support member;
14. a first support; 48, a front cantilever;
15. a pin; a pushing device;
16. a connecting structure; 50, a shield beam;
17. a connecting member; a connecting rod assembly;
18. a base; side dams;
19. a second support beam; 53. a support member;
20. a second support member; a base;
21. a connecting pin; a top beam;
22. covering the beam; 56. pushing device;
23. a pushing device; a front cantilever;
24. an end bracket; 58. slitting the rod body;
25. a belt conveyor; a water inlet;
26. a reversed loader; cutting a drill pipe;
27. drilling and joint cutting drilling machine; 61. power plant;
28. a transition support; drilling a drill rod;
29. a coal cutter; 63. limiting means;
30. a middle support; drilling a rod body;
n00 scraper conveyor; 65. drill rig brackets;
66. and (4) driving a shaft of the drill rod.
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are accordingly to be regarded as illustrative in nature and not as restrictive.
In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples described in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures in order to fall within the scope of the invention.
Referring to fig. 1, a front view of the hooking machine according to the present invention is representatively illustrated. In the exemplary embodiment, the hooking machine proposed by the present invention is explained by taking an example of an end bracket applied to a coal mining system suitable for an N00 coal mining method. Those skilled in the art will readily appreciate that numerous modifications, additions, substitutions, deletions, or other changes may be made to the embodiments described below in order to apply the inventive concepts related to the present invention to other types of supports or other coal mining systems suitable for use in a coal mining system of the N00 coal mining method, and still fall within the scope of the principles of the present invention.
As shown in fig. 1, in the present embodiment, the hooking device provided by the present invention includes a base 10, a turntable 9, a first rod 7, a second rod 5, a grab bucket 1, a connecting rod assembly 3, and a driving assembly. Referring to fig. 2, a top view of a hook machine that can embody principles of the present invention is representatively illustrated in fig. 2. The structure, connection mode and functional relationship of the main components of the hooking machine proposed by the present invention will be described below with reference to the above drawings.
As shown in fig. 1 and 2, in the present embodiment, the turntable 9 is provided on the base 10 so as to be horizontally rotatable. The rear end of the first rod 7 is vertically and rotatably arranged on the rotary table 9. The rear end of the second rod 5 is vertically and rotatably connected to the front end of the first rod 7. The grab bucket 1 can be vertically and rotatably connected to the front end of the second rod body 5, and a breaking hammer is arranged on the grab bucket 1. The connecting rod assembly 3 is connected between the grab bucket 1 and the front end of the second rod body 5. The driving assembly comprises a first driving piece, a second driving piece and a third driving piece. The first driving part is arranged between the rotary table 9 and the front side of the first rod body 7. The second driving piece is arranged between the rear side of the first rod body 7 and the rear end of the second rod body 5. The third driving piece is arranged between the rear side of the second rod body 5 and the connecting rod assembly 3.
Preferably, as shown in fig. 1 and 2, in the present embodiment, the base 10 may preferably be provided with an offset weight structure such that the center of gravity of the base 10 is located at the rear side of the second rod 5. Therefore, the hook machine provided by the invention utilizes the structure that the offset counterweight structure is arranged at the bottom of the carrier gas to form an uneven counterweight base structure so as to balance the reaction force when the hook machine works.
Preferably, as shown in fig. 1 and 2, in the present embodiment, the rear end of the first rod 7 may be vertically rotatably provided on the turntable 9, preferably through the first bearing 8.
Preferably, as shown in fig. 1 and 2, in the present embodiment, the grapple 1 may be vertically rotatably connected to the front end of the second rod 5, preferably, through the third bearing 2.
Preferably, as shown in fig. 1 and 2, in the present embodiment, the rear end of the second rod 5 may be vertically rotatably connected to the front end of the first rod 7, preferably, by the rotating unit 6.
Preferably, as shown in fig. 1 and 2, in the present embodiment, the first driving member may preferably be a first hydraulic cylinder 4, and the first hydraulic cylinder 4 includes a first cylinder body rotatably connected to the turntable 9 and a first cylinder rod telescopically disposed in the first cylinder body and rotatably connected to the front side of the first rod 7.
Preferably, as shown in fig. 1 and fig. 2, in the present embodiment, the second driving member may preferably be a second hydraulic cylinder 4 ', and the second hydraulic cylinder 4' includes a second cylinder body and a second cylinder rod, the second cylinder body is rotatably connected to the rear side of the first rod body 7, and the second cylinder rod is telescopically arranged in the second cylinder body and rotatably connected to the rear end of the second rod body 5.
Preferably, as shown in fig. 1 and 2, in the present embodiment, the third driving member may preferably be a third hydraulic cylinder 4 ", and the third hydraulic cylinder 4" includes a third cylinder and a third cylinder rod, the third cylinder is rotatably connected to the rear side of the second rod body 5, and the third cylinder rod is telescopically arranged in the third cylinder and rotatably connected to the connecting rod assembly 3.
Preferably, as shown in fig. 1 and fig. 2, in the present embodiment, the hooking device may further preferably include a sliding rail 11, and the base 10 is slidably disposed on the sliding rail 11. On this basis, the sliding rail 11 can be arranged in the mining direction, for example, on the base of the head support, so that the hook can be moved back and forth in the mining direction relative to the head support.
Preferably, in the present embodiment, the inside of the sliding rail 11 may be preferably provided with a high-strength gear for sliding, under the action of the hooking arm (the first rod 7 and the second rod 5), so as to realize that the hooking machine travels within one coal mining step. In addition, a fastening device may be preferably provided at the slide rail 11 to prevent the hook machine from sliding on the slide rail arbitrarily during operation.
Preferably, as shown in fig. 1 and 2, in the present embodiment, the grab bucket 1, the third bearing 2 and the connecting rod assembly 3 of the hook machine may be preferably connected by fastening bolts.
It should be noted herein that the hooking machines shown in the drawings and described in this specification are but a few examples of the many types of hooking machines that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are in no way limited to any of the details of the hook machine or any of the components of the hook machine shown in the drawings or described in this specification.
Referring to FIG. 3, a top view of the coal mining system of the present invention is representatively illustrated. In the exemplary embodiment, the coal mining system proposed by the present invention is explained by taking as an example a coal mining system applied to an N00 coal mining method. Those skilled in the art will readily appreciate that many modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to utilize the relevant design of the present invention in other systems, and such changes are within the scope of the principles of the coal mining system as set forth herein.
As shown in fig. 3, in the present embodiment, the coal mining system proposed by the present invention includes an N00 scraper conveyor 31, a head support 24, a mine spoil support 33, a plurality of intermediate supports 30, two sets of transition supports 28, and two sets of drill-cutting rigs 27. With reference additionally to fig. 4-13, a front view of a coal mining system capable of embodying the principles of the present invention is representatively illustrated in fig. 4; a front view of a head support 24 of the coal mining system is representatively illustrated in fig. 5; a front view of a mine spoil support 33 of the coal mining system is representatively illustrated in fig. 6; a top view of the mine support 33 is representatively illustrated in fig. 7; a front view of an intermediate support 30 of the coal mining system is representatively illustrated in fig. 8; representatively illustrated in fig. 9 is a top view of intermediate support 30; a front view of a transition support 28 of the coal mining system is representatively illustrated in fig. 10; representatively illustrated in fig. 11 is a top view of transition support 28; a front view of a drill and kerf rig 27 of a coal mining system is representatively illustrated in fig. 12; a top view of the drill and slitting drill 27 is representatively shown in fig. 13. The structure, connection mode and functional relationship of the main components of the coal mining system proposed by the present invention will be described below with reference to the above drawings.
As shown in fig. 3 to 5, in the present embodiment, the N00 flight conveyor 31 has a head and a tail. The nose and tail of the N00 scraper conveyor 31 are respectively provided with an N00 scraper conveyor 32, and the nose side and tail side of the N00 scraper conveyor 31 are respectively connected with a reversed loader 26. The tip holder 24 is provided on the nose side of the N00 flight conveyor 31, and the hook mechanism proposed by the present invention and described in detail in the above embodiment is provided at the front end of the base of the tip holder 24. The gangue stopping bracket 33 is arranged at the tail side of the N00 scraper conveyor 31. The plurality of intermediate supports 30 are arranged at the rear side of the N00 scraper conveyor 31 in the mining direction, and the plurality of intermediate supports 30 are positioned between the end supports 24 and the waste rock blocking supports 33. Two sets of transition supports 28 are arranged on the rear side of the N00 scraper conveyor 31 in the mining direction, wherein one set of transition supports 28 is arranged between the middle support 30 and the end support 24, and the other set of transition supports 28 is arranged between the middle support 30 and the gangue stopping support 33. Two sets of slitting drills 27 are provided on the rear side of the N00 scraper conveyor 31 in the mining direction, one set of slitting drills 27 being located between the head bracket 24 and one of the transition brackets 28, and the other set of slitting drills 27 being located between the gangue stopping bracket 33 and the other of the transition brackets 28. In addition, the coal mining system includes a coal cutter 29, and the coal cutter 29 can cut coal along the working face. Through the design, when the end support 24 of the coal mining system provided by the invention applies the hooking machine provided by the invention, the hooking machine can be used for switching the grab bucket 11 and the breaking hammer to break and charge coal in a roadway. The invention realizes that the tunnel expansion coal mining is carried out by using the hook machine at the head, the tunnel is cut by using the coal cutter 29 at the tail, and the tunnel is excavated by mining, thereby overcoming the contradiction that the tunnel needs to be excavated in the prior coal mining, and realizing the scientific coal mining method that the tunnel does not need to be excavated in the coal mining by improving the mechanical equipment.
In the invention, the grab bucket 11 and the breaking hammer (for example, arranged on the grab bucket 11) can be switched at the end (the front end of the second rod body 5) to break coal, break rock and charge coal in the roadway. The hooking machine realizes the coal cutting operation of the synchronous coal cutter step pitch through the slide rail 11, after a coal mining cycle, the end support 24, the transition support 28, the middle support 30, the waste rock blocking support 33 and the like are sequentially pushed to complete the cycle of the coal cutting step pitch, and meanwhile, the drilling and joint-cutting drilling machine 27 performs the synchronous top cutting operation to realize the stress release of the overlying rock stratum of the empty area.
Furthermore, in the operation process of the coal mining system provided by the invention, the coal hooking machine arranged at the front end of the end support 24 positioned on the machine head side firstly breaks and charges coal, the charged coal is placed on the belt conveyor 25 positioned at the center of the end support 24, the coal cutting machine 29 performs the coal cutting operation in a synchronous working surface, meanwhile, the supports positioned in the mining field sequentially move forwards, and after the coal cutting machine 29 cuts the machine tail, the end support 24 positioned on the machine tail behind the roadway top plate at the cutting position rapidly moves forwards to support the free surface on the coal wall side in time, so that all the supports are in place when the next operation cycle is performed. The coal cutting and the top cutting are carried out simultaneously without mutual influence. The invention realizes that the tunnel expansion coal mining is carried out by using the hook machine at the head, the tunnel is cut by using the coal cutter 29 at the tail, and the tunnel is excavated by mining, thereby overcoming the contradiction that the tunnel needs to be excavated in the prior coal mining, and realizing the scientific coal mining method that the tunnel does not need to be excavated in the coal mining by improving the mechanical equipment.
Preferably, as shown in fig. 5, in the present embodiment, the head support 24 may preferably include a first support beam 13, a second support beam 19, a shelter beam 22, and a pusher jack 23. Specifically, the first support beam 13 is provided above the base 18 via the first support 14. A second support beam 19 is provided above the base 18 via a second support member 20, and the front end of the second support beam 19 is connected to the rear end of the first support beam 13. A shield beam 22 is provided above the base 18, the shield beam 22 being attached to the rear end of the second support beam 14. Pusher jack 23 is provided in the base. The end bracket 24 can break and load coal by using a hooking machine, so that roadway expansion coal mining is performed by using the hooking machine at the end side. The shelter beams 22 of the end brackets 24 and the base 18 may preferably be connected by a link assembly and a connecting pin 21. The first and second supports 14, 20 connected between the first and second support beams 13, 19 and the base 18 of the head bracket 24, respectively, can be load-bearing, and the first and second supports 14, 20, respectively, may preferably be hydraulic cylinders, each of which may be connected to the first and second support beams 13, 19 and the base 18, preferably by pins and steel structural members. The front end of the first supporting beam 13 can be preferably connected with a freely telescopic forepoling 12, so that the support of the adjacent empty area on the side of the coal wall can be realized, and the timely side protection can be realized. The pusher jack 23 of the head support 24 enables a complete travel after a coal mining cycle. The base 18 may be of two-piece construction and the two pieces may preferably be connected by a connector 17. The rear end of the first support beam 13 may be connected to the connecting structure 16 of the front end of the second support beam 19, preferably by means of a pin 15.
Preferably, as shown in fig. 6 and 7, in the present embodiment, the waste rock blocking bracket 33 may preferably include a base 41, a waste rock blocking plate 34, a top beam 37, a front probe beam 36, a link assembly 40, and a pushing device 38. Specifically, the waste rock blocking plate 34 is provided on the side surface of the base 41. The top beam 37 is positioned above the base 41 by a support 35. The front canopy 36 is telescopically mounted to the front end of the top rail 37. The connecting rod assembly 40 is connected between the rear end of the top beam 37 and the base 41. Pusher jack 38 is provided on base 41. The waste rock blocking support 33 can achieve a waste rock blocking function of collapse of waste rock on the top cutting side, the collapsed waste rock can serve as a roadway side to support a roadway, and early-stage supporting resistance and supporting space are provided for subsequent roadway-side supporting. The spoil barrier 34 and base 41 are preferably welded. The spoil panel 34 and the base 41 of the spoil support 33 may preferably be connected by a link assembly 40 in a riveted fashion. The support 35 connected between the top beam 37 and the base 41 of the waste rock blocking bracket 33 can be used for bearing, the support 35 is preferably a hydraulic cylinder, and the hydraulic cylinder can be connected to the top beam 37 and the base 41 through a pin and a steel structural member. The front canopy 36 which is connected with the top beam 37 and can be freely stretched and retracted can realize supporting of the adjacent empty area on the side of the coal wall and timely side protection. The rear end of the top beam 37 may preferably be provided with a telescopic rear beam 39. The pushing device 38 of the waste rock blocking bracket 33 can realize the matched walking after one coal mining cycle.
Preferably, as shown in fig. 8 and 9, in the present embodiment, the intermediate support may preferably include a base 54, a gob shield 50, a roof beam 55, a forebeam 57, a link assembly 51, and a pusher jack 56. Specifically, the shield beams 50 are provided above the pedestals 54. A roof beam 55 is provided above the base 54 by supports 53, the rear end of the roof beam 55 being attached to the front end of the shield beam 50. A front canopy 57 is telescopically mounted to the front end of the top canopy 55. The connecting rod assembly 51 is connected between the screen beam 50 and the base 54. Pusher jack 56 is provided on base 54. The middle support has larger support resistance so as to support a top plate above the working face. The top beam 55 and the base 54 can be preferably connected in a riveting mode through connecting rods, the supporting piece 53 connected between the top beam 55 and the base 54 can realize bearing, the supporting piece 53 is preferably a hydraulic cylinder, the upper part and the lower part of the hydraulic cylinder can be preferably connected to the top beam 55 and the base 54 through pins and steel structural members, and the front canopy 57 which is connected to the top beam 55 and can freely stretch and retract can realize supporting of adjacent vacant areas on the coal wall side and realize timely side protection. The side of the top beam 55 may preferably be provided with a side dam 52. The thrust unit 56 of the intermediate support enables a complete travel after a coal mining cycle.
Preferably, as shown in fig. 10 and 11, in the present embodiment, the transition support may preferably include a base 44, a shield beam 42, a roof beam 43, a forepoling bar 48, a link assembly 45, and a pusher jack 49. Specifically, the shield beams 42 are provided above the pedestals 44. A roof rail 43 is provided above the base 44 by a support 46, the rear end of the roof rail 43 being connected to the front end of the shield beam 42. A front canopy 48 is telescopically mounted to the front end of the top rail 43. The connecting rod assembly 45 is connected between the screen beam 42 and the base 44. Pusher jack 49 is provided on base 44. The transition support has large bearing capacity and large supporting space so as to realize large supporting resistance on the roadway retaining side in the construction process of the N00 construction method and support the top plate in the roadway. The top beam 43 and the base 44 may preferably be riveted together by a connecting rod assembly 45. The load bearing is achieved by a support 46 connected between the top beam 43 and the base 44, the support 46 preferably being a hydraulic cylinder, which can be connected up and down to the top beam 43 and the base 44, preferably by means of pins and steel structural members. The front canopy 48 which is connected with the top beam 43 and can be freely stretched can realize the support of the adjacent empty area at the side of the coal wall and realize the timely side protection. The pusher gear 49 of the transition support enables a complete travel after one coal mining cycle.
Preferably, as shown in fig. 12 and 13, in the present embodiment, the drill-slitting drill 27 may preferably include a carriage, a plurality of slitting machines, and a plurality of drilling machines. Specifically, each slitting machine includes a slitting bar body 58, a slitting drill rod 60, and a power unit 61. The slitting bar body 58 is arranged on the bracket. The lance drill rod 60 is disposed on the lance body 58 and extends from the front end of the lance body 58. The power device 61 is connected with the cutting bar body 58 in a transmission way. Each drill includes a drill rod body 64, a drill rod 62 and a power unit 61. The drilling rod body 64 is arranged on the bracket. The boring bar 62 is disposed on the boring bar body 64 and extends from a forward end of the boring bar body 64. The power device 61 is connected with the drilling rod body 64 in a transmission way. In addition, in the embodiment, the drilling and lancing drilling machine 27 can preferably adopt a structure designed by four-joint (i.e. including two drilling drill rods 62 and two lancing drill rods 60), so as to artificially perform goaf pressure relief, reduce dynamic disasters such as coal rocks, and the equipment matched with the coal mining system is scientific and reasonable, is suitable for most roadways, and has important significance for recovering coal resources and reducing the disasters of mine pressure. Wherein the drill and slitting drill 27 is capable of directional presplitting crest cutting behind the working face. The drilling and slitting drilling machine 27 mainly comprises a slitting rod body 58, a water inlet 59, a slitting drill rod 60, a power device 61, a drilling drill rod 62, a limiting device 63, a drilling rod body 64, a drilling machine support 65, a drill rod transmission shaft 66 and the like. The drill-slitting drill 27 can preferably perform the roof cutting operation along the roadway slope through a drilling-slitting operation flow. The slitting drill rod 60 can be connected to the slitting drill rod body 58 preferably through screws and is erected on the drill support 65 through a limiting device 63, the other end of the slitting drill rod body 58 is connected to the power device 61 through a drill transmission shaft, and the water inlet 59 of the drilling slitting drill 27 can achieve cooling and dust removal of the drill hole.
In summary, the coal mining system provided by the invention constitutes a supporting equipment system capable of expanding roadways by using a hooking machine, and comprises an end support with the hooking machine, a drilling and cutting drilling machine (such as a quadruple design shown in the figure) for matching cutting and drilling of roadway roof cutting, an end support with a large roof cutting support operation space and a middle support capable of prolonging a support space, wherein the end support can realize walking of coal mining steps. At the tail of the designed working face, in order to prevent the waste rock from collapsing, a waste rock blocking support with a waste rock blocking plate is also arranged in a matched mode, and in order to achieve that the coal mining machine picks the top of the roadway to cut the outline of the roadway, a matched N00 scraper conveyor is designed.
It should be noted herein that the coal mining systems illustrated in the drawings and described in the present specification are but a few examples of the wide variety of coal mining systems that can employ the principles of the present invention. It should be clearly understood that the principles of this invention are in no way limited to any of the details of the coal mining system or any of the components of the coal mining system shown in the drawings or described in this specification.
In summary, when the hooking machine provided by the invention is applied to an end support of a coal mining system, the hooking machine can be used for switching the grab bucket and the breaking hammer to break and charge coal in a roadway. The invention realizes that the tunnel expansion coal mining is carried out by using the hook machine at the head, the tunnel is cut by using the coal cutter at the tail, and the tunnel is excavated by mining, thereby overcoming the contradiction that the tunnel needs to be excavated in the prior coal mining, and realizing the scientific coal mining method that the tunnel does not need to be excavated in the coal mining by improving the mechanical equipment.
The invention designs an N00 matching equipment system for using a hook machine to expand a roadway at a machine head position, which realizes that the hook machine is used at the machine head to carry out coal mining, and the roadway is cut by a coal mining machine at the machine tail, thereby realizing the roadway retaining at the two sides of the machine head and the machine tail and realizing the mining replacement of the roadway on a working face.
Exemplary embodiments of the coal mining system proposed by the present invention are described and/or illustrated in detail above. Embodiments of the invention are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or step of one embodiment can also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. described and/or illustrated herein, the articles "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and the description are used merely as labels, and are not numerical limitations of their objects.
While the coal mining system of the present invention has been described in terms of various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.
Claims (9)
1. A coal mining system, comprising:
an N00 scraper conveyor having a nose and a tail;
the end support is arranged on one side of the machine head of the N00 scraper conveyor, a hooking machine is arranged at the front end of the base of the end support, and the hooking machine comprises a base, a rotary table, a first rod body, a second rod body, a grab bucket, a connecting rod assembly and a driving assembly; the rotary table can be horizontally and rotatably arranged on the base; the rear end of the first rod body is vertically and rotatably arranged on the rotary table; the rear end of the second rod body can be vertically and rotatably connected to the front end of the first rod body; the grab bucket is vertically and rotatably connected to the front end of the second rod body, and a breaking hammer is arranged on the grab bucket; the connecting rod assembly is connected between the grab bucket and the front end of the second rod body; the driving assembly comprises a first driving piece, a second driving piece and a third driving piece; the first driving piece is arranged between the rotary table and the front side of the first rod body; the second driving piece is arranged between the rear side of the first rod body and the rear end of the second rod body; the third driving piece is arranged between the rear side of the second rod body and the connecting rod assembly;
the waste rock blocking bracket is arranged on one side of the tail of the N00 scraper conveyor;
the middle brackets are arranged at the rear side of the N00 scraper conveyor in the mining direction, and the middle brackets are positioned between the end bracket and the waste rock blocking bracket;
two groups of transition supports are arranged at the rear side of the N00 scraper conveyor in the mining direction, one group of transition supports are positioned between the middle support and the end supports, and the other group of transition supports are positioned between the middle support and the waste rock blocking supports; and
and the two groups of drilling and slitting drilling machines are arranged on the rear side of the N00 scraper conveyor in the mining direction, one group of drilling and slitting drilling machines are positioned between the end bracket and one group of transition brackets, and the other group of drilling and slitting drilling machines are positioned between the waste rock blocking bracket and the other group of transition brackets.
2. The coal mining system of claim 1, wherein the bed is provided with an offset counterweight structure such that a center of gravity of the bed is located behind the second mast; and/or the rear end of the first rod body is vertically and rotatably arranged on the rotary table through a first bearing; and/or the grab bucket is vertically and rotatably connected to the front end of the second rod body through a third bearing.
3. The coal mining system of claim 1, wherein the first driving member is a first hydraulic cylinder, the first hydraulic cylinder includes a first cylinder body and a first cylinder rod, the first cylinder body is rotatably connected to the turntable, and the first cylinder rod is telescopically arranged in the first cylinder body and rotatably connected to the front side of the first rod body; and/or the second driving part is a second hydraulic cylinder, the second hydraulic cylinder comprises a second cylinder body and a second cylinder rod, the second cylinder body is rotatably connected to the rear side of the first rod body, and the second cylinder rod is telescopically arranged in the second cylinder body and rotatably connected to the rear end of the second rod body; and/or, the third driving piece is a third hydraulic cylinder, the third hydraulic cylinder comprises a third cylinder body and a third cylinder rod, the third cylinder body is rotatably connected to the rear side of the second rod body, and the third cylinder rod is telescopically arranged in the third cylinder body and rotatably connected to the connecting rod assembly.
4. The coal mining system of claim 1, wherein the hooking machine further comprises a sliding rail, and the base is slidably disposed on the sliding rail.
5. The coal mining system of claim 1, wherein the head support further comprises:
the first supporting beam is arranged above the base through a first supporting piece;
the second supporting beam is arranged above the base through a second supporting piece, and the front end of the second supporting beam is connected to the rear end of the first supporting beam;
the shield beam is arranged above the base and connected to the rear end of the second supporting beam; and
the pushing device is arranged on the base.
6. The coal mining system of claim 1, wherein the mine spoil support comprises:
a base;
the waste rock blocking plate is arranged on the side surface of the base;
the top beam is arranged above the base through a support;
the front canopy is telescopically arranged at the front end of the top beam;
the connecting rod assembly is connected between the rear end of the top beam and the base; and
the pushing device is arranged on the base.
7. The coal mining system of claim 1, wherein the intermediate support includes:
a base;
the shielding beam is arranged above the base;
the top beam is arranged above the base through a support, and the rear end of the top beam is connected with the front end of the shield beam;
the front canopy is telescopically arranged at the front end of the top beam;
the connecting rod assembly is connected between the shield beam and the base; and
the pushing device is arranged on the base.
8. The coal mining system of claim 1, wherein the transition support comprises:
a base;
the shielding beam is arranged above the base;
the top beam is arranged above the base through a support, and the rear end of the top beam is connected with the front end of the shield beam;
the front canopy is telescopically arranged at the front end of the top beam;
the connecting rod assembly is connected between the shield beam and the base; and
the pushing device is arranged on the base.
9. The coal mining system of claim 1, wherein the drill-slitting drill includes:
a support;
a plurality of slitting machines, each slitting machine comprising:
the joint cutting rod body is arranged on the bracket;
the joint cutting drill rod is arranged on the joint cutting rod body and extends out of the front end of the joint cutting rod body; and
the power device is in transmission connection with the joint cutting rod body; and
a plurality of drills, each of the drills comprising:
the drilling rod body is arranged on the bracket;
the drilling drill rod is arranged on the drilling rod body and extends out of the front end of the drilling rod body; and
and the power device is in transmission connection with the drilling rod body.
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