WO2016110033A1 - 深井高应力煤岩阶梯形滚筒 - Google Patents

深井高应力煤岩阶梯形滚筒 Download PDF

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Publication number
WO2016110033A1
WO2016110033A1 PCT/CN2015/078732 CN2015078732W WO2016110033A1 WO 2016110033 A1 WO2016110033 A1 WO 2016110033A1 CN 2015078732 W CN2015078732 W CN 2015078732W WO 2016110033 A1 WO2016110033 A1 WO 2016110033A1
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Prior art keywords
hub
water delivery
delivery channel
end plate
coal rock
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Ceased
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PCT/CN2015/078732
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English (en)
French (fr)
Inventor
刘送永
杜长龙
薛玉刚
李建平
江红祥
刘晓辉
刘增辉
韩栋栋
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China University of Mining and Technology CUMT
China University of Mining and Technology Beijing CUMTB
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China University of Mining and Technology CUMT
China University of Mining and Technology Beijing CUMTB
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Publication of WO2016110033A1 publication Critical patent/WO2016110033A1/zh
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
    • E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
    • E21C25/10—Rods; Drums
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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
    • E21C35/18—Mining picks; Holders therefor
    • E21C35/187—Mining picks; Holders therefor with arrangement of fluid-spraying nozzles

Definitions

  • the invention relates to a pre-cutting shearer drum, in particular to a shearer drum suitable for cutting high-stress coal rock in deep wells.
  • the existing shearer drum cuts the coal rock through the rotation of the ⁇ -type pick on the spiral blade and the end plate, but considering the narrow mining space of the actual coal mine and the harsh mining conditions, the mining of high-stress coal rock in the deep well
  • the size of the shearer should not be too large, which leads to the limitation of the size of the cutting machine of the shearer, which cannot meet the cutting requirements of high-stress coal and rock in deep wells. Therefore, there is a need for a new type of shearer drum that can cut high-stress coals under certain power conditions.
  • the object of the present invention is to overcome the problems existing in the prior art, and to provide a deep well high stress coal rock stepped drum which is compact in structure and suitable for a narrow mining space of a coal mine.
  • the deep well high stress coal rock stepped drum of the present invention comprises a rear hub, a front hub connected to the rear hub, and a rear end of the rear hub and the front hub connection,
  • the rear hub is provided with a spiral blade which is connected with the end plate, and the spiral blade and the outer edge of the end plate are spaced apart from each other by a plurality of grooves, and a pick-type pick and a nozzle are fixed between the groove and the two grooves respectively.
  • the front hub has a serpentine pick arranged in a spiral shape; the end disc has an end disc window distributed at 120°; the end disc is provided with an annular water passage, and is provided with A nozzle water delivery channel, a hub water delivery channel, and an end disk water delivery channel that communicate with the annular water delivery channel.
  • the rear hub and the front hub have the same outer diameter and equal length.
  • the end plate front surface is provided with an end plate guard plate, and the end plate guard plate is provided with wear strips at intervals.
  • the present invention opens a stress unloading groove on a high-stress coal rock by a drum rotation to form a free surface, realizes mining of high-stress coal rock in a deep well, and communicates through each waterway to ensure water supply of the nozzle to achieve dust elimination.
  • the diameter of the cylindrical envelope surface formed by the pick-tooth tip on the front hub is smaller than the diameter of the cylindrical envelope surface formed by the pick-tooth tip on the spiral vane on the rear hub, at the drum drive torque
  • the cuttings on the front hub have a stronger cutting capacity under constant conditions.
  • the ⁇ -type pick on the front hub pre-opens a stress unloading groove on the high-stress coal rock in the deep well.
  • the cut coal under the cut enters the spiral blade through the end window and transports the coal. Going out, in the cutting of the next coal and rock, the cutting resistance of the helical blade and the ⁇ -type pick on the end plate is significantly less during the cutting process, and the ⁇ -type pick on the front hub is the cutting of the next knives.
  • the mining demand of high-stress coal seams improves the mining efficiency and safety conditions of high-stress coal seams.
  • the invention adopts the outer diameter of the rear cylinder hub and the front cylinder hub, and can effectively transport the coal rock cut by the front cylinder hub type pick cutting. Moreover, the hub is simple in form and easy to manufacture.
  • Figure 1 is a left side view showing the structure of a deep well high stress stepped drum of the present invention
  • Figure 2 is a front view showing the structure of the deep well high stress stepped drum of the present invention.
  • Figure 3 is an end view of the deep well high stress stepped drum of the present invention.
  • the deep well high stress coal rock stepped drum of the present invention is mainly composed of a rear hub 1, a front hub 2, a spiral blade 3, an end disc 4, a nozzle 5, and a cymbal type cutter 6.
  • the rear hub 1 is connected to the front hub 2, and the outer diameters of the rear hub 1 and the front hub 2 are identical and equal in length, and are connected by welding; the rear hub 1 and the front hub 2 are connected
  • An end plate 4 is disposed at the end;
  • the rear hub 1 is provided with a spiral blade 3 engaged with the end plate 4, and the outer edges of the spiral blade 3 and the end plate 4 are spaced apart by a plurality of grooves, and the groove is
  • a ⁇ -type pick 6 and a nozzle 5 are respectively fixed between two adjacent grooves;
  • the spiral blade 3 is welded with a spiral blade guard 3-1 and a wear block 3-2; and the rear hub 1 is welded
  • the front hub 2 is welded with a pick-type pick 6; the front pick 6 on the front hub 2 is arranged in a spiral shape, as shown in FIG.
  • the end plate 4 is provided with an end plate guard 4-2 on the front end surface thereof, and the end plate guard 4-2 is provided with wear-resistant strips 4-1 at intervals, and the end discs are provided with end plates distributed at intervals of 120°.
  • Window 4-7; the end plate 4 is provided with an annular water delivery channel 4-5, and is provided with a nozzle water delivery channel 4-3, a hub water delivery channel 4-4 and a terminal connected to the annular water delivery channel 4-5.
  • Disk blade water delivery channel 4-6 as shown in Figure 3.
  • the invention adopts the step roller to pre-cut an unloading trough to the narrow mining space of the coal mine, and can increase the capacity of the shearer to cut high-stress coal rock.
  • the diameter of the cylindrical envelope surface formed by the pick tooth tip on the front hub is smaller than the diameter of the cylindrical envelope surface formed by the pick tooth tip on the spiral vane on the rear hub, and the drum drive is twisted.
  • the cutting force of the pick-up pick on the front hub is larger. Therefore, in the mining of high-stress coals in the deep well, the task of pre-cutting on the front hub 2 is pre-cut.
  • the trough, the cut coal is transported out through the end disc window 4-7 on the end disc 4, and the cutting teeth on the rear hub 1 can be placed on the high stress coal rock of the unloading trough when the second knife is cut.
  • the cutting is easy, and the ⁇ -type pick on the front hub 2 opens an unloading groove for cutting the next knive. It solves the problem of mechanized mining of high-stress coal-rock cutting in deep wells and can meet the mining needs of high-stress coal seams.
  • the stern-type pick of the front hub cuts a stress unloading groove on the high-stress coal rock, and the free surface of the coal rock is enlarged, and the second rock is cut on the rear hub.
  • the cutting resistance of the ⁇ type pick is significantly reduced, and during the second cutting process, the ⁇ type pick on the front hub is the cutting cut stress relief groove of the next knive.
  • the stepped drum of the deep well high-stress coal rock proposed by the invention adopts a pre-cutting drum to cut an unloading groove on the coal rock in advance, and obviously reduces the cutting resistance of the pick-type pick of the next-end end disc and the spiral blade.
  • the problem of mechanized mining of deep-well high-stress coal and rock is solved, and the cutting efficiency of high-stress coal and rock in deep well is improved under the condition that the power of explosion-proof motor is not greatly improved.
  • the structure is driven by an explosion-proof motor to meet the requirements of underground explosion-proof, and the structure of the shearer drum is simple and compact.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)

Abstract

一种深井高应力煤岩阶梯形滚筒，包括后筒毂（1）、前筒毂（2）、螺旋叶片（3）、端盘（4）、喷嘴（5）、镐型截齿（6）。后筒毂（1）和前筒毂（2）连接处设有一端盘（4），后筒毂（1）上设有与端盘（4）衔接的螺旋叶片（3），螺旋叶片（3）和端盘（4）的外缘上间隔布有多个镐型截齿（6）和喷嘴（5），前筒毂（2）固定有呈螺旋状排列的镐型截齿（6）；端盘（4）上设有环形输水通道（4-5），并设有连通环形输水通道（4-5）的喷嘴输水通道（4-3）、轮毂输水通道（4-4）和端盘叶片输水通道（4-6）。该滚筒解决了深井高应力煤岩的机械化开采问题，在防爆电机功率未大幅提高情况下提高了深井高应力煤岩截割效率。该结构采用防爆电机驱动，满足井下防爆要求，采煤机滚筒结构简单紧凑。

Description

深井高应力煤岩阶梯形滚筒 技术领域
本发明涉及一种预截割采煤机滚筒，尤其是一种适用于深井高应力煤岩截割的采煤机滚筒。
背景技术
现有采煤机滚筒通过在螺旋叶片和端盘上的镐型截齿的旋转截割破碎煤岩，但是考虑到实际煤矿狭小的开采空间以及恶劣的开采条件，在深井高应力煤岩的开采过程中，由于工作空间的限制，采煤机的尺寸不可太大，这就导致采煤机截割电机的尺寸受到限制，无法满足深井高应力煤岩截割需要。因此，亟需一种新型的在一定功率情况下能截割高应力煤岩的采煤机滚筒。
发明内容
技术问题：本发明的目的是克服现有技术中存在的问题，提出一种结构紧凑、适应煤矿狭小的开采空间的深井高应力煤岩阶梯形滚筒。
技术方案：本发明的深井高应力煤岩阶梯形滚筒，包括后筒毂、连接在后筒毂上的前筒毂，所述的后筒毂和前筒毂连接处设有一端盘，所述的后筒毂上设有与端盘衔接的螺旋叶片，螺旋叶片和端盘的外缘上间隔布有多个凹槽，凹槽内和两凹槽之间分别固定有镐型截齿和喷嘴，所述前筒毂上有呈螺旋状排列的镐型截齿；所述的端盘上开有呈120°分布的端盘窗口；所述端盘上设有环形输水通道，并设有连通环形输水通道的喷嘴输水通道、轮毂输水通道和端盘叶片输水通道。
所述后筒毂和前筒毂的外径一致且长度相等。
所述的端盘前端面上设有端盘护板，端盘护板上间隔设有耐磨条。
有益效果：本发明通过滚筒旋转在高应力煤岩上开设应力卸载槽，形成自由面，实现对深井高应力煤岩的开采，并通过各个水道连通，保障喷嘴的供水来实现灭尘。在滚筒旋转过程中，前筒毂上截齿齿尖所形成的圆柱形包络面直径小于后筒毂上螺旋叶片上的截齿齿尖所形成的圆柱形包络面直径，在滚筒驱动扭矩不变情况下前筒毂上截齿有更强的截割能力。在高应力煤岩截割过程中，前筒毂上的镐型截齿预先在深井高应力煤岩上开一条应力卸载槽，截割下的煤岩通过端盘窗口进入螺旋叶片中，将煤运输出去，在下一刀煤岩截割中，螺旋叶片和端盘上面的镐型截齿在截割过程中的截割阻力明显较少，同时前筒毂上的镐型截齿为下一刀的截割隔开一道应力卸载槽，解决了深井高应力煤岩的机械化开采问题，能够满足井下 高应力煤层的开采需求，提高了井下高应力煤层的开采效率和安全条件。本发明采用后筒毂和前筒毂等外径的方式，可有效的运输前筒毂镐型截齿截割时候截割下来的煤岩。而且筒毂形式简单、易于制造。
附图说明
图1是本发明的深井高应力阶梯形滚筒的结构图左视图；
图2是本发明的深井高应力阶梯形滚筒的结构图主视图；
图3是本发明的深井高应力阶梯形滚筒的端盘视图。
图中：1—后筒毂；1-1—加强筋；1-2—吊耳；1-3—筒毂水道；2—前筒毂；3—螺旋叶片；3-1—螺旋叶片护板；3-2—耐磨块；3-3—螺旋叶片水道；4—端盘；4-1—耐磨条；4-2—端盘护板；4-3—喷嘴输水通道；4-4—筒毂输水通道；4-5—环形输水通道；4-6—端盘叶片输水通道；4-7—端盘窗口；5—喷嘴；6—镐型截齿。
具体实施方式
下面结合附图对本发明的一个实施例作进一步的描述：
如图1所示，本发明的深井高应力煤岩阶梯形滚筒主要由后筒毂1、前筒毂2、螺旋叶片3、端盘4、喷嘴5、镐型截齿6构成。所述的后筒毂1与前筒毂2相连接，后筒毂1和前筒毂2的外径一致、且长度相等，通过焊接连接；所述的后筒毂1和前筒毂2连接处设有一端盘4；所述的后筒毂1上设有与端盘4衔接的螺旋叶片3，螺旋叶片3和端盘4的外缘上间隔布有多个凹槽，凹槽内和两相邻两凹槽间分别固定有镐型截齿6和喷嘴5；所述螺旋叶片3上焊有螺旋叶片护板3-1、耐磨块3-2；所述后筒毂1上面焊接有吊耳1-2和连接螺旋叶片3和后筒毂1的加强筋1-1。
所述前筒毂2上面焊接镐型截齿6；所述前筒毂2上的镐型截齿6呈螺旋状排列，如图1所示。
所述的端盘4前端面上设有端盘护板4-2，端盘护板4-2上间隔设有耐磨条4-1且端盘上开有呈120°间隔分布的端盘窗口4-7；所述端盘4上设有环形输水通道4-5，并设有连通环形输水通道4-5的喷嘴输水通道4-3、轮毂输水通道4-4和端盘叶片输水通道4-6，如图3所示。
工作原理：本发明采用阶梯滚筒对煤矿狭小开采空间预先切割一道卸载槽的方式，可增大采煤机截割高应力煤岩的能力。在滚筒旋转过程中，前筒毂上截齿齿尖所形成的圆柱形包络面直径小于后筒毂上螺旋叶片上的截齿齿尖所形成的圆柱形包络面直径，在滚筒驱动扭 矩不变情况下前筒毂上镐型截齿的截割力更大，因此在深井高应力煤岩的开采时，让前筒毂2上镐型截齿承担预切割的任务开出一条卸载槽，割下的煤通过端盘4上的端盘窗口4-7被运出，在第二刀的切割时，后筒毂1上的截齿便可在开好卸载槽的高应力煤岩上轻松截割，同时前筒毂2上的镐型截齿为下一刀的截割开一条卸载槽。解决了深井高应力煤岩截割的机械化开采问题，能够满足井下高应力煤层的开采需求。
因此在高应力煤岩截割中，前筒毂上镐型截齿在高应力煤岩上截割出一道应力卸载槽，煤岩自由面加大，在第二刀截割时后筒毂上的镐型截齿截割阻力会明显减小，且在第二刀截割过程中，前筒毂上的镐型截齿为下一刀的截割割出应力卸载槽。本发明提出的深井高应力煤岩阶梯形滚筒采用预截割的滚筒预先在煤岩上截开一道卸载槽的方式，明显减小了下一刀端盘和螺旋叶片上镐型截齿的截割阻力，解决了深井高应力煤岩的机械化开采问题，在防爆电机功率未大幅提高情况下提高了深井高应力煤岩截割效率。该结构采用防爆电机驱动，满足井下防爆要求，采煤机滚筒结构简单紧凑。

Claims (3)

  1. 一种深井高应力煤岩阶梯形滚筒，其特征在于：它包括后筒毂(1)、连接在后筒毂(1)上的前筒毂(2)，所述的后筒毂(1)和前筒毂(2)连接处设有一端盘(4)，所述的后筒毂(1)上设有与端盘(4)衔接的螺旋叶片(3)，螺旋叶片(3)和端盘(4)的外缘上间隔布有多个凹槽，凹槽内和两相邻凹槽间分别固定有镐型截齿(6)和喷嘴(5)，所述的前筒毂(2)上固定有呈螺旋状排列的镐型截齿(6)；所述的端盘(4)上开有呈120°分布的端盘窗口(4-7)，端盘(4)上设有环形输水通道(4-5)，并设有连通环形输水通道(4-5)的喷嘴输水通道(4-3)、轮毂输水通道(4-4)和端盘叶片输水通道(4-6)。
  2. 根据权利要求1所述的深井高应力煤岩阶梯形滚筒，其特征在于：所述后筒毂(1)和前筒毂(2)的外径一致且长度相等。
  3. 根据权利要求1所述的深井高应力煤岩阶梯形滚筒，其特征在于：所述的端盘(4)前端面上设有端盘护板(4-2)，端盘护板(4-2)上间隔设有耐磨条(4-1)。
PCT/CN2015/078732 2015-01-09 2015-05-12 深井高应力煤岩阶梯形滚筒 Ceased WO2016110033A1 (zh)

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