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WO2017031895A1 - 刮板输送机哑铃销断裂检测系统及方法 - Google Patents

刮板输送机哑铃销断裂检测系统及方法 Download PDF

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Publication number
WO2017031895A1
WO2017031895A1 PCT/CN2015/099323 CN2015099323W WO2017031895A1 WO 2017031895 A1 WO2017031895 A1 WO 2017031895A1 CN 2015099323 W CN2015099323 W CN 2015099323W WO 2017031895 A1 WO2017031895 A1 WO 2017031895A1
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WO
WIPO (PCT)
Prior art keywords
scraper conveyor
dumbbell pin
chute
wireless
range finder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2015/099323
Other languages
English (en)
French (fr)
Inventor
李伟
张行
朱真才
邱明权
任勇
周公博
彭玉兴
曹国华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Mining and Technology Beijing CUMTB
Original Assignee
China University of Mining and Technology Beijing CUMTB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China University of Mining and Technology Beijing CUMTB filed Critical China University of Mining and Technology Beijing CUMTB
Priority to AU2015407087A priority Critical patent/AU2015407087B2/en
Priority to RU2017108643A priority patent/RU2667986C2/ru
Priority to US15/558,768 priority patent/US10273091B2/en
Publication of WO2017031895A1 publication Critical patent/WO2017031895A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
    • B65G43/02—Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating
    • 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
    • E21F13/06—Transport of mined material at or adjacent to the working face
    • E21F13/066—Scraper chain conveyors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/026—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring distance between sensor and object
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G19/00—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
    • B65G19/18—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/04—Bulk
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/02—Control or detection
    • B65G2203/0266—Control or detection relating to the load carrier(s)
    • B65G2203/0275—Damage on the load carrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/04—Detection means
    • B65G2203/042—Sensors
    • B65G2203/044—Optical
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2210/00—Aspects not specifically covered by any group under G01B, e.g. of wheel alignment, caliper-like sensors
    • G01B2210/58—Wireless transmission of information between a sensor or probe and a control or evaluation unit

Definitions

  • the invention relates to a pin break detection system and method, in particular to a scraper conveyor dumbbell pin break detection system and method.
  • the fully mechanized mining face scraper conveyor is connected by the dumbbell pin in the chute.
  • the dumbbell pin is subjected to a huge impact load when pushed and pushed, too large. The pulling force is very likely to cause wear and breakage of the dumbbell pin.
  • the resistance to the shift is increasing, and the stroke of the shift is also increasing. If the crack of the dumbbell pin is broken, it will directly lead to the misalignment or disengagement of the central trough, and cause the chain reaction to affect the normal production of the working face, even As a result, the entire coal mining system is paralyzed, and there are huge potential safety hazards.
  • the present invention provides a dumbbell pin break detection system and method for a scraper conveyor that overcomes the deficiencies of manual detection, is simple and easy to maintain.
  • a scraper conveyor dumbbell pin break detection system including a scraper conveyor, a wireless distance measuring device, a wireless communication device, a bracket controller, and a monitoring center;
  • the scraper conveyor chute and the hydraulic support of the fully mechanized mining face are in one-to-one correspondence, arranged linearly along the working face of the shearer, and the bracket controller is installed on the base of the hydraulic support for controlling the hydraulic support to push and pull, and the hydraulic support
  • the wireless distance measuring device is installed on the slot conveyor of the scraper conveyor, the wireless distance measuring device and the bracket controller communicate through the wireless communication device, and the bracket controller is electrically connected to the monitoring center through the CAN bus to the Ethernet gateway.
  • the wireless communication device is composed of ZigBee wireless data transmission module.
  • the monitoring center includes a signal processing system with ARM, DSP or FPGA as the microprocessor and a digital display unit with MCGS industrial control software as the core.
  • the wireless distance measuring device comprises a guiding device, a supporting mechanism, a fixed base, a laser range finder, a reflective target plate and a fixing bolt, and the guiding device is welded on the slot conveyor of the scraper conveyor chute, and is arranged on the slot
  • the surface together constitutes a guiding groove
  • the supporting mechanism is fixed by fixing bolts and guiding means, and can be moved parallel along the guiding groove
  • the laser range finder is placed in the fixed base, fixed on the supporting mechanism by fixing bolts
  • the reflecting target plate is directly welded On the support mechanism corresponding to the laser projection direction.
  • the ray projection direction of the laser range finder is on the same horizontal line as the center of the reflective target plate, and is the same at any adjacent chute installation position.
  • a method for detecting a dumbbell pin breakage of a scraper conveyor comprising the following steps:
  • the scraper conveyor chute corresponds to the hydraulic support and the bracket controller, and is uniformly numbered;
  • the dumbbell pin When the push-pull is subjected to the greatest resistance, the dumbbell pin is subjected to the maximum tensile force and reaches the maximum deformation, and the dumbbell pin is near the fracture state: the maximum distance between the laser range finder and the reflective target plate is set when any two adjacent chutes are operated in the same direction. For D, when the two adjacent chutes are set to operate in opposite directions, the minimum distance between the laser range finder and the reflective target is C. To eliminate the judgment error, set 0.9C/L and 1.1D/L respectively. The values are two thresholds M 0 % and N 0 %;
  • the laser range finder emits a laser signal
  • the laser signal is emitted to the reflective target plate and reflected back requires a certain time interval, according to which the laser ranging can be determined
  • the distance between the instrument and the reflective target plate, the wireless communication device can convert the measured distance data into an electrical signal form and wirelessly transmit it to the bracket controller, and the bracket controller further transmits the data signal to the monitoring center, thereby completing One measurement of the relative displacement of any two adjacent chutes;
  • the invention has the beneficial effects that the relative displacement between any two adjacent chutes in the process of pushing and squeezing the scraper conveyor is used as a reference basis, and the dumbbell pin can be accurately determined by comparing with the set threshold value, and the dumbbell is quickly determined by the monitoring center.
  • the position of the pin and the feedback information are transmitted to the corresponding bracket controller to control the corresponding chute action, avoiding the blindness of complicated manual work and manual detection, and greatly shortening the detection cycle.
  • FIG. 1 is a schematic flow chart of a dumbbell pin fracture detecting method according to the present invention.
  • FIG. 2 is a schematic view showing the installation of the wireless distance measuring device of the present invention.
  • Figure 2-1 is a structural diagram of a wireless ranging device.
  • 3 is a schematic view showing the mating dimensions of the dumbbell pin seat of the present invention.
  • FIG. 4 is a schematic view showing a critical state of adjacent chutes in the process of fracture detection according to an embodiment of the present invention.
  • scraper conveyor chute 1, scraper conveyor chute, 2, wireless distance measuring device, 21, guiding device, 22, support mechanism, 23, fixed base, 24, reflective target plate, 25, fixing bolts, 26, wiring holes, 3, dumbbell pin.
  • the scraper conveyor dumbbell pin breakage detection system of the present invention includes a scraper conveyor chute, a wireless distance measuring device, a wireless communication device, a rack controller, and a monitoring center.
  • the scraper conveyor chute 1 and the hydraulic support of the fully mechanized mining face are in one-to-one correspondence, arranged linearly along the working face of the shearer, and the bracket controller is installed on the base of the hydraulic support for controlling the hydraulic support to push and slide, and One-to-one correspondence of hydraulic brackets
  • the wireless distance measuring device 2 is installed on the slot conveyor of the scraper conveyor chute, the wireless distance measuring device 2 and the bracket controller communicate through the wireless communication device, and the bracket controller passes the CAN bus to the Ethernet gateway.
  • the wireless communication device is composed of a ZigBee wireless data transmission module.
  • the monitoring center includes a signal processing system with a chip such as ARM, DSP or FPGA as a microprocessor and a digital display unit with MCGS industrial control software as the core.
  • the wireless distance measuring device 2 includes a guiding device 21, a supporting mechanism 22, a fixed base 23, a laser range finder, a reflective target plate 24 and a fixing bolt 25;
  • the guiding device 21 is welded to the squeegee conveyor chute shovel And forming a guiding groove together with the upper surface of the trough, the supporting mechanism 22 is fixed by the fixing bolt 25 and the guiding device 21, and can be moved in parallel along the guiding groove, and the laser range finder is placed in the fixed base 23 through the fixing bolt 25
  • Fixed on the support mechanism 22, the reflective target plate 24 is directly welded to the support mechanism corresponding to the laser projection direction, and the support mechanism 22 is provided with a wiring hole 26 for power supply wiring and wireless communication equipment wiring, laser ranging
  • the ray projection direction is on the same horizontal line as the center of the reflective target plate 24, and is the same at any adjacent chute installation position.
  • the scraper conveyor dumbbell pin break detection system and method of the present invention comprises the following steps:
  • the scraper conveyor chute corresponds to the hydraulic support and the bracket controller, and is uniformly numbered 1, 2...N-1, N;
  • the dumbbell pin is subjected to the maximum tensile force and reaches the maximum deformation, and the dumbbell pin is in a state of fracture: when any two adjacent chutes are set to run in the same direction, between the laser range finder and the reflective target The maximum distance value is D. When the two adjacent chutes are operated in relative reverse direction, the minimum distance between the laser range finder and the reflective target is C. To eliminate the judgment error, set 0.9C/L and 1.1D respectively. The value of /L is two thresholds M 0 % and N 0 %;
  • the laser range finder emits a laser signal
  • the laser signal is emitted to the reflective target plate 24 and reflected back requires a certain time interval, according to which the laser measurement can be determined
  • the distance between the distance meter and the reflective target the wireless communication device can convert the measured distance data into an electrical signal and wirelessly
  • the mode is transmitted to the rack controller, and the rack controller further transmits the data signal to the monitoring center, thereby performing one measurement of the relative displacement of any two adjacent chutes;

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mining & Mineral Resources (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Control Of Conveyors (AREA)

Abstract

一种刮板输送机哑铃销断裂检测系统和方法，该系统包括刮板输送机、无线测距装置（2）、无线通讯设备、支架控制器和监控中心；无线测距装置（2）安装在刮板输送机溜槽（1）铲煤板槽帮上，有激光测距仪和反射靶板（24），检测任意两相邻溜槽的相对位移；无线通讯设备实现无线测距装置（2）和支架控制器的通信，将激光测距仪的位移以无线传输方式传至支架控制器；支架控制器控制刮板输送机溜槽（1）的动作；监控中心与支架控制器电气连接，可将任意相邻溜槽相对位移数据进行存储处理。该方法以相邻溜槽之间的相对位移值为参考，判断哑铃销是否发生断裂故障，能够准确确定断裂哑铃销的位置，并通过支架控制器控制溜槽动作，具有极高的推广和使用价值。

Description

刮板输送机哑铃销断裂检测系统及方法 技术领域
本发明涉及一种销断裂检测系统及方法，特别是一种刮板输送机哑铃销断裂检测系统及方法。
背景技术
综采工作面刮板输送机溜槽间通过哑铃销连接，煤矿开采过程中，综采设备随着采煤工作面的变化而不断推进，推溜时哑铃销承受着巨大的冲击载荷作用，过大的拉力极易造成哑铃销的磨损和断裂。溜槽推移过程中，所受推移阻力不断增大，推移行程也不断增大，若哑铃销出现断裂故障将直接导致中部槽连接错位或脱开，并引起连锁反应影响到工作面的正常生产，甚至导致整个采煤工作系统瘫痪，存在着巨大的安全隐患。
目前，国内大部分矿井仍然沿用传统的人工检查方式对哑铃销的断裂故障进行检测，由于矿井工作环境复杂，且哑铃销数目多检测工作量大，很难及时检测并更换断裂的哑铃销，无法确保矿井开采的安全进行。现有的断裂检测技术，包括如电磁感应技术、光纤传感器检测技术、应变传感器检测技术和牵引回流检测技术等，受到矿井工作环境复杂性的影响，井下布置困难，且容易受到外界干扰，可行性较差。
发明内容
发明目的：本发明提供一种克服了人工检测的不足，简单易行、易于维护的刮板输送机哑铃销断裂检测系统及方法。
为了实现上述目的，本发明采用了如下的技术方案：一种刮板输送机哑铃销断裂检测系统，包括刮板输送机、无线测距装置、无线通讯设备、支架控制器和监控中心；所述刮板输送机溜槽和综采工作面液压支架一一对应，沿采煤机工作面直线布置，支架控制器安装于液压支架底座，用于控制液压支架推溜拉溜动作，并与液压支架一一对应，无线测距装置安装在刮板输送机溜槽铲煤板槽帮上，无线测距装置和支架控制器通过无线通讯设备通信，支架控制器通过CAN总线转以太网网关与监控中心电气连接；无线通讯设备由ZigBee无线数传模块构成，监控中心包括以ARM、DSP或FPGA等芯片为微处理器的信号处理系统和以MCGS工控软件为核心的数显单元。
所述无线测距装置包括导向装置、支护机构、固定底座、激光测距仪、反射靶板和固定螺栓，导向装置焊接于刮板输送机溜槽铲煤板槽帮上，并与槽帮上表面共同构成导向槽，支护机构通过固定螺栓和导向装置固定，并可沿导向槽平行移动，激光测距仪置于固定底座内，通过固定螺栓固定于支护机构上，反射靶板直接焊接于与激光投射方向对应的支护机构上。
所述激光测距仪射线投射方向与反射靶板中心处于同一水平直线上，且在任意相邻溜槽安装位置相同。
一种刮板输送机哑铃销断裂检测方法，包括以下步骤：
a)、保证综采工作面设备直线度和平整度的前提下，刮板输送机溜槽与液压支架、支架控制器一一对应，并统一编号；
b)、设定位移比率阈值：刮板输送机推溜动作前，固定在支护机构上的激光测距仪和反射靶板之间距离为L，C＜L＜D，刮板输送机推溜过程中，由于受到相邻溜槽凹凸头配合长度A以及哑铃销销杆长度B的限制，在任意哑铃销断裂前，对应相邻两溜槽相对平移过程中必有两个相对位移极限位置，此时推溜所受阻力最大，哑铃销受拉力最大并达到最大变形，哑铃销濒临断裂状态：设定任意两相邻溜槽相对同向运行时，激光测距仪和反射靶板之间最大距离值为D,设定任意两相邻溜槽相对反向运行时，激光测距仪和反射靶板之间最小距离值为C,为了消除判定误差，分别设定0.9C/L和1.1D/L的值为两个阈值M0％和N0％；
c)、无线测距：刮板输送机推溜过程中，激光测距仪发射激光信号，激光信号发射至反射靶板并反射回来需要一定的时间间隔，根据这一时间间隔可确定激光测距仪与反射靶板之间的距离，无线通信设备可将测得的距离数据转换为电信号的形式并以无线方式传输给支架控制器，支架控制器将数据信号进一步传送给监控中心，从而完成任意两相邻溜槽相对位移的一次测量；
d)、支架控制器控制动作：监控中心将任意两相邻溜槽相对位移数据E进行处理并按照特定顺序编号，并实时计算得到相对位移比率N％，N％＝E/L，通过对比N％与所设定阈值之间的关系：若每5s内任意时刻数据值满足M0％＜N％＜N0％，则哑铃销正常工作；若每5s内任意时刻出现N％＜M0％或者N％＞N0％则可判定哑铃销断裂，监控中心汇总数据确定断裂哑铃销的位置，并将反馈信息传输至对应的支架控制器控制停止对应溜槽动作，并对刮板输送机停机检查；
e)、重复步骤c)至d)，实时检测刮板输送机哑铃销断裂情况。
有益效果：本发明以刮板输送机推溜过程中任意两相邻溜槽之间的相对位移量为参考依据，通过与设定阈值对比可准确判定哑铃销是否断裂，由监控中心快速确定断裂哑铃销的位置，并将反馈信息传输至对应的支架控制器控制对应溜槽动作，规避了繁复的人工作业和人工检测的盲目性，大大缩短了检测周期。
附图说明
图1为本发明哑铃销断裂检测方法的流程示意图。
图2为本发明无线测距装置的安装示意图。
图2-1为无线测距装置结构图。
图3为本发明哑铃销座的配合尺寸示意图。
图4为本发明实施例断裂检测过程中相邻溜槽的临界状态示意图。
图中：1、刮板输送机溜槽，2、无线测距装置，21、导向装置，22、支护机构，23、固定底座，24、反射靶板，25、固定螺栓，26、接线孔，3、哑铃销。
具体实施方式：
下面结合附图对本发明做更进一步的解释。
如图2所示，本发明的刮板输送机哑铃销断裂检测系统包括刮板输送机溜槽、无线测距装置、无线通讯设备、支架控制器和监控中心。所述刮板输送机溜槽1和综采工作面液压支架一一对应，沿采煤机工作面直线布置，支架控制器安装于液压支架底座，用于控制液压支架推溜拉溜动作，并与液压支架一一对应，无线测距装置2安装在刮板输送机溜槽铲煤板槽帮上，无线测距装置2和支架控制器通过无线通讯设备通信，支架控制器通过CAN总线转以太网网关与监控中心电气连接；无线通讯设备由ZigBee无线数传模块构成，监控中心包括以ARM、DSP或FPGA等芯片为微处理器的信号处理系统和以MCGS工控软件为核心的数显单元。
所述无线测距装置2包括导向装置21、支护机构22、固定底座23、激光测距仪、反射靶板24和固定螺栓25；导向装置21焊接于刮板输送机溜槽铲煤板槽帮上，并与槽帮上表面共同构成导向槽，支护机构22通过固定螺栓25和导向装置21固定，并可沿导向槽平行移动，激光测距仪置于固定底座23内，通过固定螺栓25固定于支护机构22上，反射靶板24直接焊接于与激光投射方向对应的支护机构上，支护机构22上设置有接线孔26，用于供电布线和无线通讯设备接线，激光测距仪射线投射方向与反射靶板24中心处于同一水平直线上，且在任意相邻溜槽安装位置相同。
如图1、3和4所示，本发明的刮板输送机哑铃销断裂检测系统及方法包括以下步骤：
a)、保证综采工作面设备直线度和平整度的前提下，刮板输送机溜槽与液压支架、支架控制器一一对应，并统一编号为1、2……N-1、N；
b)、设定位移比率阈值：刮板输送机推溜动作前，固定在支护机构22上的激光测距仪和反射靶板24之间距离为L，C＜L＜D，刮板输送机推溜过程中，由于受到相邻溜槽凹凸头配合长度A以及哑铃销销杆长度B的限制，在任意哑铃销3断裂前，对应相邻两溜槽相对平移过程中必有两个相对位移极限位置，此时推溜所受阻力最大，哑铃销受拉力最大并达到最大变形，哑铃销濒临断裂状态：设定任意两相邻溜槽相对同向运行时，激光测距仪和反射靶板之间最大距离值为D,设定任意两相邻溜槽相对反向运行时，激光测距仪和反射靶板之间最小距离值为C,为了消除判定误差，分别设定0.9C/L和1.1D/L的值为两个阈值M0％和N0％；
c)、无线测距：刮板输送机推溜过程中，激光测距仪发射激光信号，激光信号发射至反射靶板24并反射回来需要一定的时间间隔，根据这一时间间隔可确定激光测距仪与反射靶板之间的距离，无线通信设备可将测得的距离数据转换为电信号的形式并以无线 方式传输给支架控制器，支架控制器将数据信号进一步传送给监控中心，从而完成任意两相邻溜槽相对位移的一次测量；
d)、支架控制器控制动作：监控中心将任意两相邻溜槽相对位移数据E进行处理并按照特定顺序编号，并实时计算得到相对位移比率N％，N％＝E/L，通过对比N％与所设定阈值之间的关系：若每5s内任意时刻数据值满足M0％＜N％＜N0％，则哑铃销正常工作；若每5s内任意时刻出现N％＜M0％或者N％＞N0％则可判定哑铃销断裂，监控中心汇总数据确定断裂哑铃销的位置，并将反馈信息传输至对应的支架控制器控制停止对应溜槽动作，并对刮板输送机停机检查；
e)、重复步骤c)至d)，实时检测刮板输送机哑铃销断裂情况。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (4)

  1. 一种刮板输送机哑铃销断裂检测系统，其特征在于：该断裂检测系统包括刮板输送机、无线测距装置、无线通讯设备、支架控制器和监控中心；所述刮板输送机溜槽和综采工作面液压支架一一对应，沿采煤机工作面直线布置，支架控制器与液压支架一一对应，无线测距装置安装在刮板输送机溜槽铲煤板槽帮上，无线测距装置和支架控制器通过无线通讯设备通信，支架控制器通过CAN总线转以太网网关与监控中心电气连接。
  2. 根据权利要求1所述的一种刮板输送机哑铃销断裂检测系统，其特征在于：所述无线测距装置包括导向装置、支护机构、固定底座、激光测距仪、反射靶板和固定螺栓，导向装置焊接于刮板输送机溜槽铲煤板槽帮上，并与槽帮上表面共同构成导向槽，支护机构通过固定螺栓和导向装置固定，并可沿导向槽平行移动，激光测距仪置于固定底座内，通过固定螺栓固定于支护机构上，反射靶板直接焊接于与激光投射方向对应的支护机构上。
  3. 根据权利要求2所述的一种刮板输送机哑铃销断裂检测系统，其特征在于：激光测距仪射线投射方向与反射靶板中心处于同一水平直线上，且在任意相邻溜槽安装位置相同。
  4. 权利要求1所述的一种刮板输送机哑铃销断裂检测系统的检测方法，其特征在于，包括以下步骤：
    a)、保证综采工作面设备直线度和平整度的前提下，刮板输送机溜槽与液压支架、支架控制器一一对应，并统一编号；
    b)、设定位移比率阈值：刮板输送机推溜动作前，固定在支护机构上的激光测距仪和反射靶板之间距离为L，C＜L＜D，刮板输送机推溜过程中，由于受到相邻溜槽凹凸头配合长度A以及哑铃销销杆长度B的限制，在任意哑铃销断裂前，对应相邻两溜槽相对平移过程中必有两个相对位移极限位置，此时推溜所受阻力最大，哑铃销受拉力最大并达到最大变形，哑铃销濒临断裂状态：设定任意两相邻溜槽相对同向运行时，激光测距仪和反射靶板之间最大距离值为D,设定任意两相邻溜槽相对反向运行时，激光测距仪和反射靶板之间最小距离值为C,为了消除判定误差，分别设定0.9C/L和1.1D/L的值为两个阈值M0％和N0％；
    c)、无线测距：刮板输送机推溜过程中，激光测距仪发射激光信号，激光信号发射至反射靶板并反射回来需要一定的时间间隔，根据这一时间间隔可确定激光测距仪与反射靶板之间的距离，无线通信设备可将测得的距离数据转换为电信号的形式并以无线方式传输给支架控制器，支架控制器将数据信号进一步传送给监控中心，从而完成任意两相邻溜槽相对位移的一次测量；
    d)、支架控制器控制动作：监控中心将任意两相邻溜槽相对位移数据E进行处理并 按照特定顺序编号，并实时计算得到相对位移比率N％，N％＝E/L，通过对比N％与所设定阈值之间的关系：若每5s内任意时刻数据值满足M0％＜N％＜N0％，则哑铃销正常工作；若每5s内任意时刻出现N％＜M0％或者N％＞N0％则可判定哑铃销断裂，监控中心汇总数据确定断裂哑铃销的位置，并将反馈信息传输至对应的支架控制器控制停止对应溜槽动作，并对刮板输送机停机检查；
    e)、重复步骤c)至d)，实时检测刮板输送机哑铃销断裂情况。
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