WO2020048301A1 - 一种测量提升机制动力矩的方法及装置 - Google Patents

一种测量提升机制动力矩的方法及装置 Download PDF

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WO2020048301A1
WO2020048301A1 PCT/CN2019/100513 CN2019100513W WO2020048301A1 WO 2020048301 A1 WO2020048301 A1 WO 2020048301A1 CN 2019100513 W CN2019100513 W CN 2019100513W WO 2020048301 A1 WO2020048301 A1 WO 2020048301A1
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wire rope
hoist
drum
braking torque
bolt holes
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PCT/CN2019/100513
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English (en)
French (fr)
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张晓光
孙正
徐桂云
翟玉芳
徐文涛
孙佳胜
宋狄
蒋奇
卢纪丽
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枣庄学院
徐州大恒测控技术有限公司
中国矿业大学
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Publication of WO2020048301A1 publication Critical patent/WO2020048301A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/28—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for testing brakes

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  • the invention relates to a method and a device for measuring the braking torque of a hoist, and is particularly suitable for a method and a device for measuring the braking torque of a mine hoist brake, and is also suitable for measuring the braking torque of other disc brakes.
  • Mine hoist is an indispensable transportation tool in coal mines. It transports coal, auxiliary equipment and personnel. Its reliability directly affects the safety of personnel and normal production.
  • the brake is an important protection device to maintain the safety of the hoist.
  • "Coal Safety Regulations” stipulates that the braking torque generated by the brake must be greater than or equal to three times the rotation torque generated by lifting the maximum static load, and technical measurements must be performed regularly. Safety accidents may occur due to insufficient brake torque due to insufficient pressure at the hydraulic station, incorrect use of disc reeds, incorrect adjustment of brake clearance, damage to brake shoes and brake discs, pollution of brake discs by oil and dust, etc., so measure brakes regularly
  • the braking torque is an important guarantee for safe production.
  • Patent No. ZL200710025204.0 discloses a large brake braking torque involute measuring device for measuring braking torque. This method uses a jack to generate driving force, and the force acts on a part of the involute with the outer circle of the drum as the base circle. On the pressure-receiving part, the braking torque is measured by measuring the pressure of the hydraulic circuit.
  • Patent No. ZL201010555300.8 discloses a method for installing a non-contact involute braking torque measurement device, but the basic principle has not changed. The involute surface of the pressure bearing part has poor machining accuracy.
  • Patent No. ZL201410019811.6 discloses a method and device for measuring the braking torque of a hoist. This method is provided with a guide groove, which uses the guide groove to fix the axial movement of the rope. The starting point is better, but the positioning slider and the guide slider , Positioning block and other auxiliary parts have high requirements for machining accuracy, but this method will be self-defeating, resulting in large measurement errors. Therefore, there is an urgent need for a simpler and more accurate method to measure the braking torque of the elevator.
  • the purpose of the present invention is to overcome the shortcomings in the prior art, and to provide a method and device for measuring the braking torque of a hoist with a simple structure, more convenient operation, and high measurement accuracy.
  • a device for measuring the braking torque of a hoisting machine of the present invention includes a hoisting machine drum, a steel wire rope, a d-shaped shackle, a dynamometer, a chain hoist, a wire rope buckle, and a computer, and the length is 22 times that of the hoisting machine drum.
  • a section of the steel wire rope is folded in half, and the two rope ends are respectively penetrated through the two bolt holes in the middle position of the hoist drum, and the distance between the two bolts is two bolt hole positions.
  • the penetrated wire rope is buckled with the wire rope. Tie the knot, and wind the folded steel wire rope multiple times on the drum of the elevator.
  • the diameter of the wire rope is slightly smaller than the diameter of the bolt hole on the drum of the elevator.
  • the number of turns of the multi-turn wire rope wound around the drum of the hoist is 3 turns.
  • a method for measuring the braking torque of a hoist using the above device includes the following steps:
  • the hanging position of the chain hoist, the specific rope length of the wire rope, the winding direction of the rope, the selected bolt hole position and the force measurement location are determined according to the site conditions.
  • the present invention measures the braking torque according to the principles of theoretical mechanics torque balance principle, kinematics principle and the like. With the brake drum of the hoist completely braked, observe the movement of the drum when the force is constantly increasing. According to the principle of operation, the moment of the rotation of the drum, the pulling torque is equal to the braking torque. Due to the measurement error, multiple values can be measured. Use mathematical methods to analyze and get more accurate braking torque.
  • the present invention does not need to add other auxiliary equipment, does not damage the inherent structure and use performance of the hoist drum, and uses the characteristics that the steel wire wound on the hoist drum is always tangent to the drum, and is measured by the principle of torque balance
  • the braking torque of the hoist drum can be measured quickly and easily. It has a simple structure, convenient operation, accurate measurement data, and strong applicability. It can be widely used in various disc brakes including mine hoists. Measurement of brake torque.
  • FIG. 1 is a schematic structural diagram of a braking torque measuring device of the present invention.
  • FIG. 2 is a schematic diagram of a knotting manner of a steel wire rope knot.
  • a device for measuring the braking torque of a hoisting machine of the present invention is mainly composed of a hoisting drum 1, a steel wire rope 6, a d-shaped shackle 8, a dynamometer 9, a chain hoist 12, and a steel wire rope buckle 13 Formed with computer 7, remove the two bolts 4 at the middle position on the upper part of the drum 1.
  • the distance between the two bolts is two bolt holes. Select a wire rope with a length 22 times the diameter of the drum of the elevator, and then fold it in half.
  • the rope ends are respectively penetrated through the two bolt holes 3 of the drum 1 of the elevator, and the penetrated two rope ends are respectively fixed with two wire rope buckles 13 to form a wire rope knot 2;
  • the drum is wound 3 times to form a wire rope loop 5;
  • a d-shaped shackle 8 is connected to one end of the dynamometer 9 at the fold point of the wire rope 6, and the other end of the dynamometer 9 is connected with a d-shaped shackle 8 and a chain hoist.
  • the hooks 10 of 12 are connected, the hoist 12 is hung on a crane, and the dynamometer 9 is connected to the computer 7 through a lead.
  • the diameter of the steel wire rope 6 is slightly smaller than the diameter of the bolt hole 3 on the drum of the elevator.
  • the knotting method of the knot is to fold the wire rope 6 and fasten it with two wire rope buckles 13.
  • the method for measuring the braking torque of the elevator according to the present invention is as follows:

Abstract

一种测量提升机制动力矩的装置，包括提升机滚筒（1）、钢丝绳（6）、d形卸扣（8）、测力计（9）、手拉葫芦（12）、钢丝绳卡扣（13）和计算机（7）；将长度为22倍滚筒直径的一段钢丝绳（6）对折，两绳头分别从提升机滚筒（1）中部环向位置的两个螺栓孔（3）中穿入，两个螺栓间距为两个螺栓孔孔位，将穿入的钢丝绳用钢丝绳卡扣（13）打结，将对折后的钢丝绳（6）在滚筒（1）上缠绕多圈，在钢丝绳（6）的对折点处用d形卸扣（8）与测力计（9）的一端相连，测力计（9）的另一端用d形卸扣（8）与手拉葫芦（12）的钩子（10）相连，手拉葫芦（12）挂在天车上，测力计（9）经引线连接计算机（7）。还提供了一种测量提升机制动力矩的方法。

Description

一种测量提升机制动力矩的方法及装置 技术领域
本发明涉及一种测量提升机制动力矩的方法及装置，尤其适用于矿井提升机制动器制动力矩的测量方法及装置，也适用于其他圆盘形闸的制动器制动力矩的测量。
背景技术
矿井提升机是煤矿中不可或缺的运输工具，运输煤、辅助设备、人员等，其可靠程度直接影响人员与正常生产的安全，制动器是保持提升机安全的一道重要的保护装置。《煤炭安全规程》规定制动器产生的制动力矩要大于等于提升最大静载荷所产生的旋转力矩的3倍且要定期进行技术测定。可能因为液压站供压不够、碟簧片使用错误、闸间隙调整错误、闸瓦及闸盘损伤、油液粉尘污染闸盘等造成制动器制动力矩不足而导致安全事故的发生，故定期测量制动器的制动力矩是安全生产的重要保障。
传统的测量方法是拉动滚筒上的钢丝绳，以提升机滚筒圆盘半径为力臂计算制动力矩的方法测量制动器的制动力矩，方法比较简单，但是很难保证力与力臂垂直，使用工作钢丝绳很不方便，故造成测量不精确，误差较大，难操作等。专利号ZL 200710025204.0公开了大型制动器制动力矩渐开线形测量装置来进行测量制动力矩，该方法采用千斤顶来产生驱动力，力作用于以滚筒外圆盘为基圆的部分渐开线加工成的承压件上，通过测量液压回路压力来测量制动力矩。但由于测量制动力矩方法需要千斤顶、承压件等辅助装置，而渐开线承压件的渐开线面的精确成形十分困难，同时需要在提升机滚筒侧边打孔安装相应的承压件，破坏了提升机滚筒的固有结构和使用性能，故测量精度低，影响提升机滚筒后续使用。专利号为ZL 201010555300.8公开了一种非接触式渐开线形制动力矩测量装置的安装方法对其进行了改进，但其基本原理没有改变，存在承压件的渐开线面加工精度差，还要有液压站进行供液，现场安装麻烦等缺点；该方法从测制动力矩转到测承压件压力到测千斤顶压力到测量油液压力，经过了多次转化造成测量数据不精确。专利号为ZL 201410019811.6公开了一种测量提升机制动力矩的方法及装置，该方法设置了导向槽，利用导向槽来固定绳的轴向移动，出发点比较好，但是对定位滑块、导向滑块、定位块及其他辅助件加工精度有很高要求，这种方法反而会弄巧成拙，导致测量误差很大。因此，急需一种更简单更精确的方法来测量提升机制动力矩。
发明内容
技术问题：本发明的目的是克服现有技术中的不足之处，提供一种结构简单，操作更方便，测量精确度高的测量提升机制动力矩的方法及装置。
技术方案：本发明的一种测量提升机制动力矩的装置，包括提升机滚筒、钢丝绳、d形卸扣、测力计、手拉葫芦、钢丝绳卡扣和计算机，将长度为22倍提升机滚筒直径的一段钢丝绳对折，两绳头分别从所述提升机滚筒中部环向位置的两个螺栓孔中穿入，两个螺栓间距为两个螺栓孔孔位，将穿入的钢丝绳用钢丝绳卡扣打结，将对折后的钢丝绳在提升机滚筒上缠绕多圈，在钢丝绳的对折点处用d形卸扣与测力计的一端相连，测力计的另一端用d形卸扣与手拉葫芦的钩子相连，手拉葫芦挂在天车上，测力计经引线连接计算机。
所述的钢丝绳的直径略小于提升机滚筒上的螺栓孔直径。
所述缠绕提升机滚筒多圈的钢丝绳的圈数为3圈。
使用上述装置的一种测量提升机制动力矩的方法，包括如下步骤：
a.卸掉提升机滚筒中部环向任意位置两个螺栓孔内的螺栓，两个螺栓孔之间间隔两个螺栓孔孔位，将钢丝绳的绳头的两端分别从卸掉螺栓的两个螺栓孔穿入；
b.将穿入螺栓孔的两个钢丝绳绳头分别对折弯曲并用两个钢丝绳卡扣固定形成钢丝绳绳结，并将钢丝绳在提升机滚筒上缠绕3圈；
c.在钢丝绳的对折点处用d形卸扣与测力计的一端相连，测力计的另一端用d形卸扣与手拉葫芦的钩子相连，手拉葫芦挂在天车上；
d.在提升机处于完全制动的情况下，缓缓拉动手拉葫芦的手拉链条，钢丝绳张紧，在提升机滚筒转动的瞬间，与钢丝绳相连的测力计将制动力信号传输给计算机，通过计算机记录钢丝绳上拉力的大小，计算出制动闸在滚筒闸盘施加的制动力矩。
所述的手拉葫芦的悬挂位置，钢丝绳的具体绳长、绳子缠绕的方向、选择的螺栓孔孔位以及测力地点根据现场情况确定。
有益效果：本发明根据理论力学力矩平衡原理、运动学原理等原理测量制动力矩。在提升机滚筒闸盘完全制动下，在力不断增大的时候观察滚筒运动情况，根据运原理在滚筒转动的瞬间，拉力矩等于制动力矩，由于测量具有误差，可以测量多次值，利用数学的方法进行分析得出更准确制动力矩。本发明与现有技术相比，具有不需要添加其他辅助设备、不破坏提升机滚筒的固有结构和使用性能，利用提升机滚筒上缠绕的钢丝绳与滚筒始终相切的特点，通过力矩平衡原理测量出提升机滚筒的制动力矩，能简单快捷实施制动力矩的测量，其结构简单，操作方便，测量数据精确，适用性强，可广泛应用于矿井提升机在内的各类圆盘形闸的制动器制动力矩的测量。
附图说明
图1为本发明的一种测量提升机制动力矩装置的结构示意图。
图2为钢丝绳绳结打结方式示意图。
图中：1-滚筒，2-钢丝绳绳结，3-螺栓孔，4-螺栓，5-钢丝绳绳圈，6-钢丝绳，7-计算机，8-d形卸扣，9-测力计，10-钩子，11-手拉链条，12-手拉葫芦，13-钢丝绳卡扣。
具体实施方式
下面结合附图中的实施例对本发明作进一步的描述：
如附图1所示，本发明的一种测量提升机制动力矩的装置，主要由提升机滚筒1、钢丝绳6、d形卸扣8、测力计9、手拉葫芦12、钢丝绳卡扣13和计算机7构成，卸掉滚筒1上中部环向位置上两颗螺栓4，两颗螺栓的间距为两个螺栓孔孔位；选取长度为22倍提升机滚筒直径的钢丝绳，然后对折，将两绳头分别从所述提升机滚筒1的两个螺栓孔3中穿入，将穿入的两绳头分别用两个钢丝绳卡扣13固定形成钢丝绳绳结2；将对折后的钢丝绳在提升机滚筒上缠绕3圈形成钢丝绳绳圈5；在钢丝绳6的对折点处用d形卸扣8与测力计9的一端相连，测力计9的另一端用d形卸扣8与手拉葫芦12的钩子10相连，手拉葫芦12挂在天车上，测力计9经引线连接计算机7。所述的钢丝绳6的直径略小于提升机滚筒上的螺栓孔3直径。
如附图2所示，绳结的打结方式为将钢丝绳6打折用两个钢丝绳卡扣13卡紧。
本发明的一种测量提升机制动力矩的方法，具体步骤如下：
a.卸掉滚筒1中部环向任意位置两个螺栓孔3内的螺栓4，两个螺栓孔3之间间隔两个螺栓孔3孔位，将钢丝绳6的绳头的两端分别从卸掉螺栓的两个螺栓孔穿入；
b.将穿入螺栓孔的两个钢丝绳6绳头分别对折弯曲并用两个钢丝绳卡扣13固定形成钢丝绳绳结2，并将钢丝绳6在提升机滚筒1上缠绕3圈；
c.在钢丝绳6的对折点处用d形卸扣8与测力计9的一端相连，测力计的另一端用d形卸扣与手拉葫芦12的钩子10相连，手拉葫芦挂在天车上；所述的手拉葫芦12的悬挂位置，钢丝绳6对折后的绳长、绳子缠绕的方向、选择的螺栓孔孔位以及测力地点根据现场情况确定。
d.在提升机处于完全制动的情况下，缓缓拉动手拉葫芦的手拉链条11，钢丝绳6张紧，在提升机滚筒1转动的瞬间，与钢丝绳6相连的测力计9将制动力信号传输给计算机7，通过计算机7记录钢丝绳上拉力的大小，计算出制动闸在滚筒闸盘施加的制动力矩。

Claims (5)

  1. 一种测量提升机制动力矩的装置，包括提升机滚筒(1)、钢丝绳(6)、d形卸扣(8)、测力计(9)、手拉葫芦(12)、钢丝绳卡扣(13)和计算机(7)，其特征在于：将长度为22倍提升机滚筒直径的一段钢丝绳(6)对折，两绳头分别从所述提升机滚筒(1)中部环向位置的两个螺栓孔(3)中穿入，两个螺栓间距为两个螺栓孔孔位，将穿入的钢丝绳用钢丝绳卡扣(13)打结，将对折后的钢丝绳(6)在提升机滚筒(1)上缠绕多圈，在钢丝绳(6)的对折点处用d形卸扣(8)与测力计(9)的一端相连，测力计(9)的另一端用d形卸扣(8)与手拉葫芦(12)的钩子(10)相连，手拉葫芦(12)挂在天车上，测力计(9)经引线连接计算机(7)。
  2. 根据权利要求1所述的一种测量提升机制动力矩的装置，其特征在于：所述的钢丝绳(6)的直径略小于提升机滚筒上的螺栓孔(3)直径。
  3. 根据权利要求1所述的一种测量提升机制动力矩的装置，其特征在于：所述缠绕提升机滚筒(1)多圈的钢丝绳(6)的圈数为3圈。
  4. 使用权利要求1所述装置的一种测量提升机制动力矩的方法，其特征在于，包括如下步骤：
    a.卸掉提升机滚筒(1)中部环向任意位置两个螺栓孔(3)内的螺栓(4)，两个螺栓孔(3)之间间隔两个螺栓孔(3)孔位，将钢丝绳(6)的绳头的两端分别从卸掉螺栓的两个螺栓孔穿入；
    b.将穿入螺栓孔的两个钢丝绳(6)绳头分别对折弯曲并用两个钢丝绳卡扣(13)固定形成钢丝绳绳结(2)，并将钢丝绳(6)在提升机滚筒(1)上缠绕3圈；
    c.在钢丝绳(6)的对折点处用d形卸扣(8)与测力计(9)的一端相连，测力计的另一端用d形卸扣与手拉葫芦(12)的钩子(10)相连，手拉葫芦挂在天车上；
    d.在提升机处于完全制动的情况下，缓缓拉动手拉葫芦的手拉链条(11)，钢丝绳(6)张紧，在提升机滚筒(1)转动的瞬间，与钢丝绳(6)相连的测力计(9)将制动力信号传输给计算机(7)，通过计算机(7)记录钢丝绳上拉力的大小，计算出制动闸在滚筒闸盘施加的制动力矩。
  5. 根据权利要求4所述的一种测量提升机制动力矩的装置，其特征在于：所述的手拉葫芦(12)的悬挂位置，钢丝绳(6)的具体绳长、绳子缠绕的方向、选择的螺栓孔孔位以及测力地点根据现场情况确定。
PCT/CN2019/100513 2018-09-04 2019-08-14 一种测量提升机制动力矩的方法及装置 WO2020048301A1 (zh)

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