CN107063674B

CN107063674B - Mine head sheave deflection and vibration performance detection device

Info

Publication number: CN107063674B
Application number: CN201710413742.0A
Authority: CN
Inventors: 靳华伟; 夏华明; 张新; 尹玉龙; 邓涛; 张晨旭
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2017-06-05
Filing date: 2017-06-05
Publication date: 2023-03-14
Anticipated expiration: 2037-06-05
Also published as: CN107063674A

Abstract

The invention discloses a mine head sheave deflection and vibration performance detection device. The method is characterized in that: the device comprises a sensor bracket, a transverse radial displacement sensor, a collector and an upper computer. The sensor support is arranged on a head sheave platform right in front of the head sheave in the radial direction, and a transverse radial displacement sensor is arranged on the sensor support. The transverse radial displacement sensor structure comprises a transverse sensing device and a longitudinal sensing device. The signal output end of the transverse radial displacement sensor is connected with the signal input end of the acquisition card through a physical wiring, and the input end of the upper computer is connected with the signal output end of the acquisition device through the Ethernet. The device structure is exquisite, and low cost can realize under the high-risk operating mode, detects the vibration and the beat performance of one or more head pulleys simultaneously, and the gained data is accurate, the good reliability.

Description

Mine head sheave deflection and vibration performance detection device

Technical Field

The invention relates to the field of mine head sheave safety detection, in particular to a mine head sheave deflection and vibration performance detection device.

Background

The head sheave is an important part for guiding and supporting a main hoisting steel wire rope in mine hoist equipment, and the running condition of the head sheave often determines whether the running condition of the whole hoisting system is good or not. When the sheave has large vibration or deflection and the vibration or deflection exceeds the allowable range, the parts of the machine generate large additional dynamic load, so that the operation stability of a lifting system is reduced, the working performance of equipment such as a steel wire rope, the sheave, a lifter and the like is influenced, the service life of the equipment is shortened, and even serious accidents are caused. Therefore, whether the deflection and the vibration condition of the head sheave can be detected in real time or not can be detected, corresponding processing can be timely carried out, and great practical significance is achieved for the whole mine hoisting system.

Therefore, the chinese patent CN105258935A discloses a system and a method for detecting vibration performance of a head sheave of a mine hoist. The device is convenient to install, but has more sensors, and the installation positions of the sensors with complex measurement, acceleration and the like are not the optimal positions of the vibration sources. Chinese patent CN204831194U designs a head sheave deflection detection device based on machine vision, which can utilize machine vision to identify deflection, but the vision identification precision is lower, the measured data is limited, and the cost of the input equipment is relatively higher. In addition, the vibration and deflection detection equipment of the patent only does single deflection or vibration performance detection to head sheave bearing frame or a certain head sheave, and because the equipment cost is higher, the technical equipment is complicated and the like, the vibration and deflection detection can not be realized simultaneously according to the working conditions of a plurality of head sheaves, and the detected result has certain limitation.

Disclosure of Invention

The invention provides a mine head sheave deflection and vibration performance detection device for solving the defects of the prior art, comprehensively considering the optimal position of vibration and deflection detection and combining the excellent characteristics of a capacitance sensor.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a mine head sheave deflection and vibration performance detection device, the device includes sensor support, horizontal radial displacement sensor, collector and host computer. The sensor support is arranged on a head sheave platform right in front of the head sheave in the radial direction, and a transverse radial displacement sensor is arranged on the sensor support. The transverse radial displacement sensor structure comprises a transverse sensing device and a longitudinal sensing device. The signal output end of the transverse radial displacement sensor is connected with the signal input end of the acquisition card through physical wiring, and the input end of the upper computer is connected with the signal output end of the collector through the Ethernet.

Furthermore, a vibration isolation rubber pad is arranged between the sensor support and the head sheave platform.

Furthermore, the sensor support is provided with 1-4 transverse radial displacement sensors corresponding to the number of the head sheaves and the condition of required parameters.

Further, the transverse sensing device comprises a transverse rod, a spring a, a roller and a sensor body. The left end and the right end of the transverse rod are provided with rollers, and springs a coaxial with the transverse rod are arranged between the ends of the two rollers and the upper transverse end of the longitudinal rod. The middle part of the transverse rod is provided with a capacitance sensor, and the transverse rod is transversely moved to drive the effective area of the capacitor to change so as to cause voltage change. The voltage change is transmitted to the sensor body through a physical line and is processed correspondingly.

Further, the longitudinal sensing device comprises a longitudinal rod, a spring b and a sensor body. The upper end and the lower end of the longitudinal rod are respectively connected with the transverse rod and the sensor body, and the spring b is coaxial with the longitudinal rod and has the potential energy of pushing the longitudinal rod to extend. When the longitudinal rod moves longitudinally, the effective area of the capacitance sensor arranged in the sensor body changes, so that voltage changes are caused, and the voltage changes are transmitted to the sensor body for corresponding signal processing.

Furthermore, the upper computer is connected with the signal output end of the collector through the Ethernet and receives the horizontal and vertical data signals. Meanwhile, the upper computer calculates and processes data through LabVIEW software, and finally obtains the properties of the head sheave such as deflection, vibration and the like through display modes such as digital quantity, a curve graph and the like.

Furthermore, the transverse and radial displacement sensor and the collector are connected with a direct-current power supply module.

The invention has the advantages that:

1. the online detection is convenient for mastering the deflection and vibration characteristics of the running of the head sheave at any time, and faults are found and processed in time;

2. the measuring position is better, the acting force borne by the head sheave is acted on the rim of the head sheave by a steel wire rope, so that the rim of the head sheave is a 'pulse door' of the head sheave which generates vibration, deflection and other phenomena, and the detected data is more real and reliable;

3. the device is exquisite in design and low in cost, and can simultaneously measure the transverse deflection and radial vibration performance of a plurality of head sheaves without repeatedly installing other types of sensor equipment for many times;

4. the measured value is a relative error band, the requirement on the installation precision is low, the installation is convenient, the radial vibration and the axial deflection of the head sheave are detected by utilizing the high coaxiality of the head sheave, the coaxiality of a detection surface is high, and the effect is good;

5. and the area type capacitance displacement sensor is adopted, so that the precision and the reliability are high, and the detection effect is good.

Drawings

FIG. 1 is an elevational view of the sensor of the present invention installed;

FIG. 2 is an enlarged view of a portion of FIG. 1 of the present invention;

FIG. 3 is a cross-sectional view taken along line A of FIG. 1 of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 of the present invention;

FIG. 5 is a schematic view of the detecting system of the present invention with the head sheave removed;

fig. 6 is a schematic view of the fastener structure of the present invention.

In the figure: 1. the device comprises a liner 2, a head sheave 3, a head sheave rotating shaft 4, a head sheave derrick 5, a spring b 6, a longitudinal rod 7, a transverse and longitudinal displacement sensor 8, a head sheave platform 9, a sensor support 10, a fixing part 11, a roller 12, a transverse rod 13, a bearing support 14, a spring a 15, a head sheave bearing 16, a collector 17 and an upper computer.

Detailed Description

The invention is further explained below with reference to the drawings.

As shown in fig. 1, the measuring environment of the head sheave of the mine hoist comprises a head sheave derrick 4, a head sheave platform 8, a head sheave rotating shaft 3, a head sheave 2, a bearing support 13 and a bearing 15. The head sheave 2 is arranged on the head sheave rotating shaft 3, the two ends of the head sheave rotating shaft 3 are arranged on the bearing support 13 through the head sheave bearing 15, and the bearing support 13 is positioned on the head sheave derrick 4. A head sheave platform 8 is arranged below the bearing support 13.

The invention discloses a mine hoist head sheave deflection and vibration performance detection device which comprises a sensor bracket 9, a transverse and longitudinal displacement sensor 7, a collector 16 and an upper computer 17. The sensor support 9 is installed on a head sheave platform 8 in the radial direction and in the front of the head sheave 2, and a vibration isolation rubber pad is arranged between the sensor support 9 and the head sheave platform 8. The lateral radial displacement sensor 7 is mounted on a sensor carrier 9 by means of a fixing element 10. According to the number of corresponding head sheaves and the amount of required measurement data, 1-4 transverse radial displacement sensors 7 can be mounted. The structure of the transverse radial displacement sensor 7 comprises a transverse sensing device and a longitudinal sensing device. The transverse sensing device comprises a transverse rod 12, a spring a 14, a roller 11 and a body part of the transverse radial displacement sensor 7. The left end and the right end of the transverse rod 12 are provided with rollers 11, and the transverse rod 12 between the two roller ends and the upper transverse end of the longitudinal rod 6 is provided with a spring a 14 coaxial with the transverse rod. The middle part of the transverse rod 12 is provided with a capacitance sensor, the transverse rod 12 is transversely moved to drive the effective area of the capacitance to change so as to cause voltage change, and an electric signal is transmitted to the inside of the machine body of the transverse radial displacement sensor 7 to be processed. The longitudinal sensing device comprises a longitudinal rod 6, a spring b 5 and a body part of a transverse radial displacement sensor 7. The upper end and the lower end of the longitudinal rod 6 are respectively connected with the transverse rod 12 and the body part of the transverse radial displacement sensor 7, and the spring b 5 is coaxial with the longitudinal rod 6 and has the potential energy of pushing the longitudinal rod 6 to extend. When the longitudinal rod 6 moves longitudinally, the effective capacitance area of a capacitive sensor arranged in the machine body part of the transverse radial displacement sensor 7 changes, voltage changes are caused, and an electric signal is transmitted to the interior of the machine body of the transverse radial displacement sensor 7 for signal processing. The signal output end of the transverse radial displacement sensor 7 is connected with the signal input end of the collector 16 through physical wiring, and the input end of the upper computer 17 is connected with the signal output end of the collector 16 through Ethernet. Meanwhile, the upper computer 17 calculates and processes the received vibration and deflection data signals through LabVIEW software, and finally obtains the running characteristics of the head sheave such as real-time deflection and vibration conditions of the head sheave 2 through display modes such as digital quantity and curve graphs.

When the head sheave runs, the acting force is acted on the head sheave liner 1 by the steel wire rope, and the head sheave liner 1 is arranged on the rim of the head sheave. And because the rim of the head sheave has the characteristics of high coaxiality, low possibility of abrasion in working and the like when the head sheave is machined, the rim of the head sheave is the best detection position for the phenomena of vibration, deflection and the like of the head sheave 2. When the head sheave 2 deflects transversely, the transverse rod 12 moves transversely, and the effective area of the capacitive sensor mounted at the connecting part of the middle and the longitudinal rod 6 changes, which causes the change of voltage. When the head sheave 2 vibrates longitudinally, the longitudinal rod 6 moves longitudinally, the effective area of the capacitance sensor connected with the longitudinal rod changes, and voltage changes are caused. The transverse-radial displacement sensor 7 receives the two voltage signals, transmits the voltage signals of the signal output end to the signal input end of the collector 16, the signal output end of the collector 16 is connected with the upper computer 17 through the Ethernet, the upper computer 17 calls collected data through LabVIEW software, calculates and processes the data, and finally obtains the deflection and vibration time domain signal waveform of the head sheave through display modes such as digital quantity and curve graph, and further displays the real-time deflection and vibration of the head sheave.

Claims

1. The utility model provides a mine head sheave deflection and vibration performance detection device which characterized by: including sensor support, horizontal radial displacement sensor, collector and host computer, sensor support installs on the head sheave platform in head sheave radial dead ahead, and horizontal radial displacement sensor is equipped with on the sensor support, horizontal radial displacement sensor structure includes horizontal sensing device and vertical sensing device, the signal output part of horizontal radial displacement sensor passes through the signal input part that physical wiring connected collection card, and the signal output part of collector is passed through to the input of host computer through ethernet.

2. The mine head sheave deflection and vibration performance detection device of claim 1, wherein: and a vibration isolation rubber pad is arranged between the sensor support and the head sheave platform.

3. The mine head sheave deflection and vibration performance detection device of claim 1, characterized by: the sensor support is provided with 1-4 transverse radial displacement sensors corresponding to the number of the head sheave and the required parameter condition.

4. The mine head sheave deflection and vibration performance detection device of claim 1, wherein: the transverse sensing device comprises a transverse rod, a spring a, rollers and a sensor body, the rollers are mounted at the left end and the right end of the transverse rod, the springs a with the coaxiality of the transverse rod are arranged between the two roller ends and the upper transverse end of the longitudinal rod, a capacitance sensor is mounted in the middle of the transverse rod, the transverse rod is transversely moved to drive the effective area of a capacitor to change so as to cause voltage change, and the voltage change is transmitted to the sensor body through a physical line and is processed by corresponding signals.

5. The mine head sheave deflection and vibration performance detection device of claim 1, characterized by: the longitudinal sensing device comprises a longitudinal rod, a spring b and a sensor body, wherein the upper end and the lower end of the longitudinal rod are respectively connected with the transverse rod and the sensor body, the spring b is coaxial with the longitudinal rod and has potential energy pushing the longitudinal rod to extend, when the longitudinal rod moves longitudinally, a capacitance sensor arranged in the sensor body changes the effective area of capacitance, voltage changes are caused, and the voltage changes are transmitted to the sensor body to be processed correspondingly.

6. The mine head sheave deflection and vibration performance detection device of claim 1, wherein: the upper computer is connected with the signal output end of the collector through the Ethernet and receives the horizontal and longitudinal data signals, meanwhile, the upper computer calculates and processes the data through LabVIEW software, and finally obtains the properties of the head sheave such as deflection and vibration of the head sheave through display modes such as digital quantity and curve graphs.

7. The mine head sheave deflection and vibration performance detection device of claim 1, wherein: the transverse and radial displacement sensor and the collector are connected with a direct-current power supply module.