MULTIPLE-STATE HEALTH MONITORING APPARATUS AND MONITORING METHOD FOR CRITICAL COMPONENTS IN HOISTING SYSTEM

• US 20200131003A1
• Filed: 12/27/2017
• Published: 04/30/2020
• Est. Priority Date: 10/20/2017
• Status: Active Grant

• Current Assignee: China University of Mining and Technology, Xuzhou Coal Mine Safety Equipment Manufacture Co., Ltd.
• Original Assignee: China University of Mining and Technology
• Inventors: ZHOU, Gongbo, ZHU, Zhencai, LI, Wei, PENG, Yuxing, CAO, Guohua, ZHOU, Ping, SHU, Xin, HAO, Benliang, TANG, Chaoquan, LUO, Lin
• Granted Patent: US 10,815,098 B2
• Time in Patent Office: Days
• CPC Class Codes: B66B 5/0031 for safety reasons
• CPC Class Codes: B66B 5/0037 Performance analysers
• CPC Class Codes: B66B 7/06 Arrangements of ropes or cables
• CPC Class Codes: B66B 7/1238 by optical techniques
• CPC Class Codes: G01N 2021/8883 involving the calculation of gauges, generating models
• CPC Class Codes: G01N 21/8851 Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges G01N21/8806 and G01N21/93 - G01N21/95692 take precedence; optical measurement of dimensions G01B11/00; optical scanning G02B26/10; image transformation G06T3/00; computerised image enhancement G06T5/00; image processing per se for flaw detection G06T7/0002
• CPC Class Codes: G01N 21/952 Inspecting the exterior surface of cylindrical bodies or wires G01N21/956 takes precedence
• CPC Class Codes: G05B 23/0283 Predictive maintenance, e.g. involving the monitoring of a system and, based on the monitoring results, taking decisions on the maintenance schedule of the monitored system; Estimating remaining useful life [RUL] preventive maintenance, i.e. planning maintenance according to the available resources without monitoring the system G06Q10/06
• CPC Class Codes: G06N 3/045 Combinations of networks

Abstract

A multiple-state health monitoring apparatus for critical components in a hoisting system includes a frame. The frame is a square structure formed by welding a plurality of rectangular steels. A steel wire rope is arranged around a periphery of the square structure. A power system, a friction-and-wear apparatus, a brake-and-wear apparatus, and a tensioning apparatus are sequentially mounted from left to right on a bottom layer of the square structure. A bearing signal collection system, a tension sensor, an excitation apparatus, and a steel-wire-rope image collection system are sequentially mounted from left to right on a top layer of the square structure. The steel wire rope sequentially passes through all the apparatuses or systems and is driven by the power system to perform circling. All the apparatuses or systems are used to monitor an operation status of the steel wire rope.

Claims

1. A multiple-state health monitoring apparatus for critical components in a hoisting system, the multiple-state health monitoring apparatus comprising a frame, wherein the frame is a square structure formed by welding a plurality of rectangular steels, a steel wire rope is arranged around a periphery of the square structure, a power system, a friction-and-wear apparatus, a brake-and-wear apparatus, and a tensioning apparatus are sequentially mounted from left to right on a bottom layer of the square structure, a bearing signal collection system, a tension sensor, an excitation apparatus, and a steel-wire-rope image collection system are sequentially mounted from left to right on a top layer of the square structure, the steel wire rope sequentially passes through the power system, the friction-and-wear apparatus, the brake-and-wear apparatus, and the tensioning apparatus, and is driven by the power system to perform circling, and the power system, the friction-and-wear apparatus, the brake-and-wear apparatus, and the tensioning apparatus are used to monitor an operation status of the steel wire rope.

2. The multiple-state health monitoring apparatus for critical components in a hoisting system according to claim 1, wherein the power system comprises a motor, a belt, a small pulley, a large pulley, and a friction guide wheel assembly, the friction guide wheel assembly comprises a friction guide wheel, a cross shaft, and a bearing pedestal, wherein, the motor is mounted at an end portion of a bottom layer of the frame, the bearing pedestal and the motor are adjacently mounted on the frame, the cross shaft is fixed on the bearing pedestal, the large pulley is mounted and fixed at an end of the cross shaft, the friction guide wheel is mounted and fixed at a central position of the cross shaft, the small pulley is mounted on an output shaft of the motor, and the small pulley and the large pulley are connected through the belt;

the friction-and-wear apparatus comprises a hold-down cylinder, an actuating cylinder, an upper gasket, a lower gasket, and a gasket mounting plate, the actuating cylinder is horizontally mounted on the bottom layer of the frame, a rectangular steel perpendicular to the bottom layer of the frame is comprised inside the frame, the hold-down cylinder is horizontally mounted on the rectangular steel, wherein the upper gasket is fixedly mounted on a piston rod of the hold-down cylinder, a movable friction-and-wear slide is further mounted on the frame, the friction-and-wear slide is located below the hold-down cylinder, the gasket mounting plate is mounted on the friction-and-wear slide, and the lower gasket is mounted on the gasket mounting plate;

the brake-and-wear apparatus comprises a brake-and-wear cylinder, a brake-and-wear head, and a support gasket, the brake-and-wear cylinder is horizontally mounted on the rectangular steel perpendicular to the bottom layer of the frame, the brake-and-wear head is movably mounted on a piston rod of the brake-and-wear cylinder, and the support gasket is horizontally fixed on the bottom layer of the frame located right below the brake-and-wear head;

the tensioning apparatus comprises a tension cylinder, a tension-compression sensor, a translation plate, a mounting rack, a linear guide rail, and a tension slide seat, the tension slide seat is slidably mounted on the bottom layer of the frame, the linear guide rail fixed on the bottom layer of the frame is disposed below the tension slide seat at the same time, the mounting rack is fixed on the tension slide seat, the translation plate is mounted on the mounting rack, the tension cylinder and the mounting rack are adjacently and fixedly mounted on the bottom layer of the frame, one end of the tension-compression sensor is connected to a piston rod of the tension cylinder, the other end of the tension-compression sensor is connected to the translation plate, a guide wheel assembly is disposed on a surface of the translation plate, and the steel wire rope passes through the guide wheel assembly and is tensioned or loosened under effect of the tension cylinder;

the steel-wire-rope image collection system comprises a camera mounting rack and a plurality of industrial CCD cameras, the camera mounting rack has a cylindrical structure, an inner hexagonal body is fixedly mounted inside the camera mounting rack, the plurality of industrial CCD cameras are uniformly distributed and mounted inside the inner hexagonal body, and the steel wire rope passes through a center of the cylindrical structure; and

the bearing signal collection system comprises a soundproof cabinet, a noise sensor, an acceleration sensor, and a head sheave, the soundproof cabinet is mounted and fixed at a top layer end of the frame, the head sheave is mounted inside the soundproof cabinet, the noise sensor is mounted inside the soundproof cabinet, a bottom portion of the noise sensor is fixed on the frame, the acceleration sensor is mounted on an outside bearing pedestal on which a faulty bearing is capable of being replaced, and the steel wire rope passes through the soundproof cabinet and is wound around the head sheave.

3. The multiple-state health monitoring apparatus for critical components in a hoisting system according to claim 2, wherein the cross shaft is fixed on the bearing pedestal through a key and a screw, and the friction guide wheel is mounted and fixed at a center of the cross shaft through a key and a screw.

4. The multiple-state health monitoring apparatus for critical components in a hoisting system according to claim 2, wherein a first thermal imager is mounted on a side of the friction guide wheel, and is configured to measure a temperature change from friction and wear between a material on a surface of the friction guide wheel and the steel wire rope when the steel wire rope is in a faulty state.

5. The multiple-state health monitoring apparatus for critical components in a hoisting system according to claim 2 wherein the upper gasket is fixedly mounted on the piston rod of the hold-down cylinder through a threaded hole, and the linear guide rail fixed on the frame is mounted below the friction-and-wear slide to enable the friction-and-wear slide to move on the frame.

6. The multiple-state health monitoring apparatus for critical components in a hoisting system according to claim 4 wherein a second thermal imager is further disposed at the friction-and-wear apparatus, and is configured to monitor a relationship between a friction-and-wear condition and a temperature change in a wear process.

7. The multiple-state health monitoring apparatus for critical components in a hoisting system according to claim 2 wherein the steel-wire-rope image collection system comprises three industrial CCD cameras, and the three industrial CCD cameras are uniformly distributed and mounted inside the inner hexagonal body at 120 degrees therebetween by centering on a center of the inner hexagonal body.

8. The multiple-state health monitoring apparatus for critical components in a hoisting system according to claim 2, wherein the steel wire rope passes through the soundproof cabinet and is wound around the head sheave, a surface of the head sheave comprises a friction material, and a third thermal imager is mounted in the soundproof cabinet of the bearing signal collection system.

9. A method for monitoring a steel wire rope by using a multiple-state health monitoring apparatus for critical components in a hoisting system, the method comprising:

first mounting a steel wire rope containing a corrosion fault;

passing the steel wire rope containing the corrosion fault sequentially through a large pulley, a friction-and-wear apparatus, a brake-and-wear apparatus, a tensioning apparatus, a central position of an inner hexagonal body, an excitation apparatus, a tension sensor, and a head sheave to form a complete loop;

turning on a motor for a first time to enable whole of the health monitoring apparatus to run at a slow and uniform speed and enable a corroded portion of the steel wire rope to run to a position that is not in contact with the friction-and-wear apparatus and the brake-and-wear apparatus;

turning off the motor, turning on the friction-and-wear apparatus and the brake-and-wear apparatus, and creating a wear fault, a dent fault, and a broken wire fault respectively on the steel wire rope, wherein the wear fault, the dent fault, and the broken wire fault are separated at an equal interval;

turning on the motor for a second time to enable whole of the monitoring apparatus to further run at a slow and uniform speed, and turning on a steel-wire-rope image collection system at this time, and using three industrial CCD cameras to extract image data information from a plurality of angles;

the steel-wire-rope image collection system transmits collected images into a host computer, the images are preprocessed and then input into a CNN (Convolutional Neural Network) that has been trained in advance, and the host computer performs parallel computation on data to implement fast recognition and classification of a fault in an image; and

a result is output eventually to obtain a type of the fault of the steel wire rope.

10. A method for monitoring a bearing by using a multiple-state health monitoring apparatus for critical components in a hoisting system, the method comprising:

first mounting a normal or faulty bearing on an outside bearing pedestal of a bearing signal collection system;

passing a healthy steel wire rope sequentially through a large pulley, a friction-and-wear apparatus, a brake-and-wear apparatus, a tensioning apparatus, a central position of an inner hexagonal body, an excitation apparatus, a tension sensor, and a head sheave to form a complete loop, and adjusting a tensioning force of a tension cylinder simultaneously;

turning on a motor to enable whole of the health monitoring apparatus to run at a uniform speed, and using a third thermal imager and an acceleration sensor together to extract noise and temperature data information;

transmitting the collected noise and temperature data information into a host computer, preprocessing noise signals and then inputting into a RNN (Recurrent Neural Network) that has been trained in advance, wherein the host computer performs parallel computation on data to implement fast recognition and classification of a fault feature in a noise signal of the bearing; and

a result is output eventually to obtain a type of the fault of the bearing.