WO2020119199A1 - 一种大吨位箕斗抗堵系统 - Google Patents

一种大吨位箕斗抗堵系统 Download PDF

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Publication number
WO2020119199A1
WO2020119199A1 PCT/CN2019/105578 CN2019105578W WO2020119199A1 WO 2020119199 A1 WO2020119199 A1 WO 2020119199A1 CN 2019105578 W CN2019105578 W CN 2019105578W WO 2020119199 A1 WO2020119199 A1 WO 2020119199A1
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WIPO (PCT)
Prior art keywords
skip
hydraulic cylinder
plate
wellbore
sides
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PCT/CN2019/105578
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English (en)
French (fr)
Inventor
朱真才
曹国华
周公博
汤裕
江帆
沈刚
卢昊
彭玉兴
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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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Application filed by China University of Mining and Technology CUMT, China University of Mining and Technology Beijing CUMTB filed Critical China University of Mining and Technology CUMT
Priority to AU2019363538A priority Critical patent/AU2019363538B2/en
Priority to US16/765,876 priority patent/US11059700B2/en
Priority to RU2020115291A priority patent/RU2733197C1/ru
Publication of WO2020119199A1 publication Critical patent/WO2020119199A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B17/00—Hoistway equipment
    • B66B17/14—Applications of loading and unloading equipment
    • B66B17/26—Applications of loading and unloading equipment for loading or unloading mining-hoist skips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B17/00—Hoistway equipment
    • B66B17/14—Applications of loading and unloading equipment
    • B66B17/28—Applications of loading and unloading equipment electrically controlled
    • B66B17/32—Applications of loading and unloading equipment electrically controlled for skips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B17/00—Hoistway equipment
    • B66B17/08—Mining skips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/02—Guideways; Guides
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F13/00—Transport specially adapted to underground conditions

Definitions

  • the invention relates to a mining bucket, in particular to a large-tonnage bucket anti-blocking system, which belongs to the technical field of mine lifting.
  • the safe and reliable operation of the mine hoisting and loading system is very important for the safe and efficient production of the mine, and the mine bucket is the main equipment for the mine hoisting and installation in the system, and the coal is loaded underground through the loading equipment
  • the bucket gate is opened by the gate opening and closing device, and the coal is discharged into the coal bunker.
  • the bucket gate is closed and left the unloading position, and it is lowered to the bottom of the well before loading coal.
  • large-tonnage skips are more and more widely used in mine hoisting systems.
  • the structure of large-tonnage skips is characterized by high height and small cross-sectional area.
  • the continuous fall of the coal body causes the coal at the bottom of the skip box to be compacted under the impact load, resulting in unloading and clogging after the gate is opened; the coal at the upper part of the skip box is due to the large upward friction and the downward impact force is easy to cause
  • the coal is suspended and cannot be unloaded; the height of the skip is high, the hoisting period of the winch is too long, and the loading and unloading part takes a long time, causing the skip to be easily blocked.
  • the current method for removing plugs is that when the skip is unloaded and clogged, the coal miner knocks the coal with a hammer to knock the coal off.
  • the removal of the plug takes a long time, is labor intensive and unsafe.
  • the skip clogging seriously affects the improvement efficiency of the coal mine, it is prone to secondary misoperation, improper handling or even safety accidents, affecting production.
  • the present invention provides a large-tonnage bucket anti-blocking system, which can effectively reduce the problem of bucket blocking, and has a simple structure, which will not affect the normal operation of the bucket and improve the use of mining. The safety and efficiency of the system.
  • the present invention provides a large-tonnage skip anti-blocking system, which includes a skip.
  • Two parallel rows of guide rails are fixed on the upper and lower shaft walls of the shaft on both sides of the skip.
  • the impact plate is installed between the pulleys, the front plate of the impact plate is installed between the upper and lower two sets of pulleys in the front row, the rear plate of the impact plate is installed between the upper and lower two sets of pulleys in the rear row, and the length of the rib plate of the impact plate is longer than the dustpan
  • the width of the bucket, the outer side of the rib plate is installed with a hydraulic cylinder base and a vibration motor, one end of the hydraulic cylinder is connected to the hydraulic cylinder base through a buffer spring, the other end of the hydraulic cylinder is connected to the wellbore wall, and the piston rod of the hydraulic cylinder extends At the time, the inside of the rib plate pushing the impact plate is closely attached to the outer wall of the skip.
  • the hydraulic cylinder pushes the impact plate to move towards the skip.
  • the vibration motor is turned on.
  • the hydraulic cylinder is installed on a fixed base fixed to the lower end wall of the wellbore, and the height of the fixed base is half of the height of the wellbore.
  • the hydraulic cylinders are provided in four groups, which are evenly and symmetrically installed on the left and right sides of the skip, and the horizontal distance between the two hydraulic cylinders on each side is one third of the width of the wellbore.
  • the pulleys are connected to the front and rear plates of the impact plate through H-shaped connecting plates.
  • the invention adopts the combined action of the vibration motor and the hydraulic cylinder to force the material adhering to the inside of the skip to be shaken off.
  • the vibration motor can provide a small high-frequency vibration force
  • the hydraulic cylinder can provide a large low-frequency vibration force. Therefore, different options are selected according to different working conditions
  • the vibration mode of the vibration or the combination of the two is wide, it can realize stepless adjustment, convenient control, high efficiency, and the motor has small volume and weight, and stable rotation; the whole adopts a closed structure, which has strong anti-pollution ability; the hydraulic cylinder can make The device moves left and right, so it stays away from the skip when anti-blocking is not needed, and will not affect the normal operation of the skip.
  • FIG. 1 is a schematic structural diagram of Embodiment 1 of the present invention.
  • Embodiment 2 is a schematic structural view of Embodiment 2 of the present invention.
  • Embodiment 3 is a schematic diagram of Embodiment 3 of the present invention.
  • Figure 4 is a top view of Figure 1;
  • a large-tonnage skip anti-blocking system includes a skip 10, and two parallel rows of guide rails 1 are fixed on the upper and lower walls of the wellbore on both sides of the skip 10, and the guide rails 1 are cooperatively installed
  • There are a number of pulleys 2 an impact plate 4 is installed between the upper and lower pulleys 2
  • a front plate 41 of the impact plate 4 is installed between the upper and lower sets of pulleys 2 in the front row
  • a rear plate 42 of the impact plate 4 is installed on the upper and lower sides of the rear row
  • the hydraulic cylinder base 6 and the vibration motor 5 are installed at the outer side of the rib plate 43
  • one end of the hydraulic cylinder 8 is connected to the hydraulic pressure through the buffer spring 7
  • the other end of the hydraulic cylinder 8 is connected to the shaft wall of the wellbore.
  • the hydraulic cylinder 8 is installed on a fixed base 9 which is fixed on the lower end wall of the wellbore, and the height of the fixed base 9 is half the height of the wellbore .
  • the hydraulic cylinders 8 are provided in four groups, which are evenly and symmetrically installed on the left and right sides of the skip 10, and the horizontal distance between the two hydraulic cylinders 8 on each side is one third of the width of the wellbore.
  • a vibration motor 5 is provided on the outer sides of the impact plates 4 on both sides, and the vibration motor 5 is installed between the two hydraulic cylinders 8.
  • pulleys 2 are connected to the front plate 41 and the rear plate 42 of the impact plate 4 through an H-shaped connecting plate 3.
  • the difference from the first embodiment is that, as shown in FIG. 2, when the humidity of the material is high and the adhesion is strong, two vibration motors 5 are provided on the outer sides of the impact plates 4 on both sides, and the vibration motor 5 is installed On both sides of the two hydraulic cylinders 8.
  • the difference from the first embodiment is that, as shown in FIG. 3, when the height of the wellbore is high, three vibration motors 5 are provided on the outer sides of the impact plates 4 on both sides, and the vibration motor 5 is installed on the two hydraulic cylinders 8 Between two sides and two hydraulic cylinders 8.
  • the hydraulic cylinder 8 pushes the impact plate 4 to move towards the skip.
  • the vibration motor 5 is turned on.
  • the small high-frequency vibration provided by the vibration motor 5 vibrates and drops the material clogged on the inner wall of the skip; when the adhesion force is large, the vibration motor 5 can be turned off, and the impact force of the hydraulic cylinder 8 can be used to cause the skip 10 to generate a large frequency Vibration, so as to solve the blockage caused by the material with greater adhesion; it can also use the cooperation of the hydraulic cylinder 8 to expand and contract with the vibration motor 5 to completely remove the blockage material, so that the adhered material is separated from the inner wall of the skip 10, and is discharged from the material due to gravity
  • the port is unloaded; the buffer spring 7 can reduce the transmission of the force of the vibration motor 5 to the hydraulic cylinder and prevent the damage to the hydraulic cylinder 8 when the vibration motor 5 vibrates.

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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)
  • Fluid-Pressure Circuits (AREA)
  • Actuator (AREA)
  • Vibration Prevention Devices (AREA)
  • Shovels (AREA)

Abstract

一种大吨位箕斗抗堵系统，包括箕斗（10），箕斗（10）两侧的井筒上下井壁上均固定有并行的两排导轨（1），导轨（1）上配合安装有若干滑轮（2），上下滑轮（2）之间安装有冲击板（4），冲击板（4）的肋板（43）长度长于箕斗（10）的宽度，肋板（43）的外侧间隔安装有液压缸底座（6）和振动电机（5），液压缸（8）的一端通过缓冲弹簧（7）连接在液压缸底座（6）上，液压缸（8）的另一端与井筒的井壁相连，液压缸（8）活塞杆伸出时，推动冲击板（4）的肋板（43）内侧紧贴在箕斗（10）的外壁上。该系统有效减小箕斗堵塞问题，结构简单，不影响箕斗正常工作，提高矿用提升系统的安全性和工作效率。

Description

一种大吨位箕斗抗堵系统 技术领域
本发明涉及一种矿用箕斗，具体涉及一种大吨位箕斗抗堵系统，属于矿井提升技术领域。
背景技术
在煤矿生产的诸多环节中，矿井提升装载系统的安全、可靠运行，对矿井的安全高效生产十分重要，而矿用箕斗是矿井提升装在系统的主要设备，煤炭在井下通过装载设备装入箕斗，再提升到井上卸载位置后由闸门开闭装置打开箕斗闸门，将煤卸入受煤仓，卸完后箕斗闸门关闭离开卸载位置，下放到井底再行装煤。
随着煤矿生产向着大型、高产、高效方向发展，大吨位箕斗在矿井提升系统中应用越来越广泛，大吨位箕斗结构特点是高度高，横截面积小，在箕斗装载过程中，煤体不断下落使箕斗箱底部的煤在冲击载荷作用下被压实，从而造成闸门开启后卸载堵塞；箕斗箱上部的煤由于向上的摩擦力大而向下的冲击力小，容易造成煤悬空而不能被卸载；箕斗高度高，绞车提升周期过长，装卸载部分的时间长，造成箕斗容易堵塞。
目前的清堵方法是当箕斗发生卸载堵塞时，通过煤矿工人用铁锤对箕斗敲打将煤震落，其清堵耗时长、劳动强度极大且不安全。由于箕斗堵塞严重影响了煤矿的提升效率，易出现二次误操作，处理不当甚至引发安全事故，影响生产。
发明内容
为了克服现有技术存在的各种不足，本发明提供一种大吨位箕斗抗堵系统，可有效减小箕斗堵塞的问题，且结构简单，不会影响箕斗正常工作，提高矿用提升系统的安全性和工作效率。
为了实现上述发明目的，本发明一种大吨位箕斗抗堵系统，包括箕斗，箕斗两侧的井筒上下井壁上均固定有并行的两排导轨，导轨上配合安装有若干滑轮，上下滑轮之间安装有冲击板，冲击板的前板安装在前排的上下两组滑轮之间，冲击板的后板安装在后排的上下两组滑轮之间，冲击板的肋板长度长于箕斗的宽度，肋板的外侧间隔安装有液压缸底座和振动电机，液压缸的一端通过缓冲弹簧连接在液压缸底座上，液压缸的另一端与井筒的井壁相连，液压缸活塞杆伸出时，推动冲击板的肋板内侧紧贴在箕斗的外壁上。
当箕斗的内壁上粘附物料造成箕斗堵塞时，液压缸推动冲击板朝向箕斗平移，当冲击板的肋板紧贴在箕斗外壁时，打开振动电机，通过振动电机提供的小幅高频振动振落堵塞在箕斗内壁上的物料；当粘附力较大时，可以关闭振动电机，利用液压缸伸缩冲击力使箕斗产生大幅高频振动，从而解决粘附力较大的物料造成的堵塞；还可以利用液压缸伸缩和振动电机配合作用，彻底清除堵塞物料，使粘附物料脱离箕斗内壁，由于重力作用从卸料口卸载；缓冲弹簧能够减小振动电机的力传递到液压缸上，防止振动电机振动时对液压缸的破坏。
为了使液压缸对箕斗的冲击力更为均匀，所述液压缸安装在固定座上，固定座固 定在井筒的下端井壁上，固定座的高度为井筒高度的一半。
优选的，所述液压缸设置四组，均匀对称地安装在箕斗的左右两侧，每侧两个液压缸之间的水平距离为井筒宽度的三分之一。
当井筒高度较小时，两侧的冲击板的外侧分别设有一个振动电机，且振动电机安装在两个液压缸的中间；当物料湿度较大，粘附力较强时，两侧的冲击板的外侧分别设有两个振动电机，且振动电机安装在两个液压缸的两侧；当井筒高度较高时，两侧的冲击板的外侧分别设有三个振动电机，且振动电机安装在两个液压缸的两侧和两个液压缸之间。
进一步的，所述滑轮均通过H型的连接板与冲击板的前板和后板相连。
本发明采用振动电机和液压缸联合作用迫使箕斗内侧黏附的物料被振落，振动电机可以提供小幅高频的振动力，液压缸可以提供大幅低频的振动力，因此，根据不同工况选择不同的振动方式或者二者配合使用；振动电机振动频率范围广，可以实现无极调节，方便控制，效率高，且电机体积重量小，转动平稳；整体采用密闭结构，抗污能力强；液压缸能使装置左右移动，因此在不需要抗堵时远离箕斗，不会影响箕斗的正常工作。
附图说明
图1为本发明实施例一结构示意图；
图2为本发明实施例二结构示意图；
图3是本发明实施例三示意图；
图4是图1俯视图；
图中：1、导轨；2、滑轮；3、连接板；4、冲击板；41、前板；42、后板；43、肋板；5、振动电机；6液压缸底座；7、缓冲弹簧；8、液压缸；9、固定板；10、箕斗。
具体实施方式
下面结合附图和具体实施例对本发明做详细的阐述。
实施例一
如图1和图4所示，一种大吨位箕斗抗堵系统，包括箕斗10，箕斗10两侧的井筒上下井壁上均固定有并行的两排导轨1，导轨1上配合安装有若干滑轮2，上下滑轮2之间安装有冲击板4，冲击板4的前板41安装在前排的上下两组滑轮2之间，冲击板4的后板42安装在后排的上下两组滑轮2之间，冲击板4的肋板43长度长于箕斗10的宽度，肋板43的外侧间隔安装有液压缸底座6和振动电机5，液压缸8的一端通过缓冲弹簧7连接在液压缸底座6上，液压缸8的另一端与井筒的井壁相连，液压缸8活塞杆伸出时，推动冲击板4的肋板43内侧紧贴在箕斗10的外壁上。
为了使液压缸8对箕斗10的冲击力更为均匀，所述液压缸8安装在固定座9上，固定座9固定在井筒的下端井壁上，固定座9的高度为井筒高度的一半。
优选的，所述液压缸8设置四组，均匀对称地安装在箕斗10的左右两侧，每侧两个液压缸8之间的水平距离为井筒宽度的三分之一。
当井筒高度较小时，两侧的冲击板4的外侧分别设有一个振动电机5，且振动电机5安装在两个液压缸8的中间。
进一步的，所述滑轮2均通过H型连接板3与冲击板4的前板41和后板42相连。
实施例二
与实施例一不同之处在于，如图2所示，当物料湿度较大，粘附力较强时，两侧的冲击板4的外侧分别设有两个振动电机5，且振动电机5安装在两个液压缸8的两侧。
实施例三
与实施例一不同之处在于，如图3所示，当井筒高度较高时，两侧的冲击板4的外侧分别设有三个振动电机5，且振动电机5安装在两个液压缸8的两侧和两个液压缸8之间。
当箕斗10的内壁上粘附物料造成箕斗堵塞时，液压缸8推动冲击板4朝向箕斗平移，当冲击板4的肋板43紧贴在箕斗10外壁时，打开振动电机5，通过振动电机5提供的小幅高频振动振落堵塞在箕斗内壁上的物料；当粘附力较大时，可以关闭振动电机5，利用液压缸8伸缩冲击力使箕斗10产生大幅高频振动，从而解决粘附力较大的物料造成的堵塞；还可以利用液压缸8伸缩和振动电机5配合作用，彻底清除堵塞物料，使粘附物料脱离箕斗10内壁，由于重力作用从卸料口卸载；缓冲弹簧7能够减小振动电机5的力传递到液压缸上，防止振动电机5振动时对液压缸8的破坏。

Claims (5)

  1. 一种大吨位箕斗抗堵系统，包括箕斗(10)，其特征在于，箕斗(10)两侧的井筒上下井壁上均固定有并行的两排导轨(1)，导轨(1)上配合安装有若干滑轮(2)，上下滑轮(2)之间安装有冲击板(4)，冲击板(4)的前板(41)安装在前排的上下两组滑轮(2)之间，冲击板(4)的后板(42)安装在后排的上下两组滑轮(2)之间，冲击板(4)的肋板(43)长度长于箕斗(10)的宽度，肋板(43)的外侧间隔安装有液压缸底座(6)和振动电机(5)，液压缸(8)的一端通过缓冲弹簧(7)连接在液压缸底座(6)上，液压缸(8)的另一端与井筒的井壁相连，液压缸(8)活塞杆伸出时，推动冲击板(4)的肋板(43)内侧紧贴在箕斗(10)的外壁上。
  2. 根据权利要求1所述的大吨位箕斗抗堵系统，其特征在于，所述液压缸(8)安装在固定座(9)上，固定座(9)固定在井筒的下端井壁上，固定座(9)的高度为井筒高度的一半。
  3. 根据权利要求2所述的大吨位箕斗抗堵系统，其特征在于，所述液压缸(8)设置四组，均匀对称地安装在箕斗(10)的左右两侧，每侧两个液压缸(8)之间的水平距离为井筒宽度的三分之一。
  4. 根据权利要求1至3任一权利要求所述的大吨位箕斗抗堵系统，其特征在于，当井筒高度较小时，两侧的冲击板(4)的外侧分别设有一个振动电机(5)，且振动电机(5)安装在两个液压缸(8)的中间；当物料湿度较大，粘附力较强时，两侧的冲击板(4)的外侧分别设有两个振动电机(5)，且振动电机(5)安装在两个液压缸(8)的两侧；当井筒高度较高时，两侧的冲击板(4)的外侧分别设有三个振动电机(5)，且振动电机(5)安装在两个液压缸(8)的两侧和两个液压缸(8)之间。
  5. 根据权利要求4所述的大吨位箕斗抗堵系统，其特征在于，所述滑轮(2)均通过H型的连接板(3)与冲击板(4)的前板(41)和后板(42)相连。
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