CN110884978B

CN110884978B - Device and method for testing tension of steel wire rope of mining friction type elevator

Info

Publication number: CN110884978B
Application number: CN201911192533.3A
Authority: CN
Inventors: 石瑞敏; 董磊; 刘岩松; 王宗彦
Original assignee: North University of China
Current assignee: North University of China
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2021-01-19
Anticipated expiration: 2039-11-28
Also published as: CN110884978A

Abstract

The invention discloses a tension testing device and method for a steel wire rope of a mining friction type elevator, wherein a cross beam is arranged on a support in a stretching mode, a telescopic supporting leg is arranged on the support, a slide rail is transversely arranged on the cross beam, a plurality of positioning holes are uniformly distributed on the slide rail along the extending direction of the slide rail, a base is arranged on the slide rail in a sliding mode, a limiting hole is arranged on the base corresponding to the positioning holes, positioning pins are inserted into the positioning holes and the limiting hole, the base is provided with a thrust device which comprises a scissor type telescopic arm and a non-elastic knocking hammer arranged at the end part of the scissor type telescopic arm, a plurality of steel balls are filled in the non-elastic knocking hammer, the thrust device is driven by electromagnetic control, a wireless acceleration sensor is adsorbed on a steel wire rope of the friction type lifter by magnetic force, and the outside is fixed and clamped through a sensor protection clamp, and the wireless acceleration sensor sends data to the data processing system through wireless. The invention can improve the testing efficiency.

Description

Device and method for testing tension of steel wire rope of mining friction type elevator

Technical Field

The invention relates to the technical field of coal mine production, in particular to a device and a method for testing tension of a steel wire rope of a mining friction type hoister.

Background

The friction type hoister is common equipment in coal mine production, is particularly commonly used for hoisting and carrying production personnel and equipment, and once a fault occurs, serious consequences such as economic loss, even casualties and the like can be caused. In various safety accidents, steel wire rope scrap and even rope breakage accidents frequently occur due to the fact that abrasion is increased due to unbalanced tension. In addition, the uneven wear of the rope grooves of the liner can be caused due to the unbalanced tension, and the production efficiency is greatly influenced after the rope grooves are turned frequently until the liner is replaced.

In the prior art, the method for testing the tension of the steel wire rope mainly comprises the following steps: the other method is to arrange a pressure sensor in a balance oil cylinder for rope adjustment to calculate the tension of a steel wire rope, wherein the publication number is CN104502011A and discloses a multi-rope hoist steel wire rope tension monitoring device, and the publication number is CN208631859U and discloses a multi-rope-way skip cage steel wire rope tension detecting device. The method is characterized in that an oil pressure sensor is installed in a rope adjusting oil cylinder, and the tension of a steel wire rope is calculated through signals transmitted back to the well. However, due to machining errors of the lifting device, the displacement of the steel wire rope in each movement is different under continuous movement, and the oil cylinder works at the upper limit and the lower limit to cause measurement errors. The other method is a three-point bending method, for example, the publication No. CN109230937A discloses a steel wire rope tension on-line monitoring device, the application No. 200810185697.9 discloses a rope tension measuring device, and the method has high requirements on installation position, precision and transverse displacement of a middle force application point, so that the measurement precision is difficult to be stably ensured. The steel wire rope tension testing method and the device thereof adopt a mathematical model which takes the dead weight of the steel wire rope into consideration, the measurement precision is improved compared with that of the traditional vibration wave method, but a single steel wire rope is used for testing in the testing process, the working efficiency is lower, and the vertical striking mode and the hardware structure of the device are not described. The method has high requirements on installation precision and reliability, influences on a lifting system, or has low accuracy, and cannot fully meet the requirement of a coal mine enterprise on the tension test of the steel wire rope in the actual routing inspection.

Disclosure of Invention

In order to overcome the defects and shortcomings of the prior art, the tension testing device and method for the steel wire rope of the mining friction type elevator are provided, so that the tension testing device and method for the steel wire rope of the friction type elevator are convenient, effective, easy to implement, safe and reliable, and the purpose of improving the efficiency is achieved.

The invention provides a tension testing device and a method for a steel wire rope of a mining friction type elevator, which are used for realizing the aim of the invention, and comprise a bracket, a wireless acceleration sensor, a sensor protection clamp and a data processing system, wherein a cross beam is arranged on the bracket in a stretching way, the bracket is provided with a telescopic supporting leg, the telescopic supporting leg is provided with position adjusting holes at positions 1.2m, 1.5m and 1.8m away from the bottom end surface, a slide rail is transversely arranged on the cross beam, a plurality of positioning holes are uniformly distributed on the slide rail along the extending direction of the slide rail, a base is arranged on the slide rail in a sliding way, a limiting hole is arranged on the base corresponding to the positioning holes, positioning pins are inserted in the positioning holes and the limiting holes so as to limit the position of the base, a thrust device is arranged on the base, the thrust device comprises a scissor type telescopic arm and a non, the non-elastic knocking hammer is internally filled with a plurality of steel balls, the thrust device is driven by electromagnetic control, the wireless acceleration sensor is adsorbed on a steel wire rope of the friction type hoister by magnetic force, the outside of the wireless acceleration sensor is fixedly clamped by a sensor protection clamp, and the wireless acceleration sensor wirelessly sends data to a data processing system.

As a further improvement of the scheme, the scissor type telescopic arms are provided with two groups, and a plurality of connecting rods are arranged between the hinged points of the two groups of scissor type telescopic arms.

As a further improvement of the scheme, the upper end of the scissor type telescopic arm close to the base is hinged with the base, and the lower end of the scissor type telescopic arm is arranged in the sliding groove of the base in a sliding mode.

As a further improvement of the scheme, the telescopic supporting legs are composed of sleeves with different pipe diameters, and every two adjacent sleeves are clamped with the grooves through balls.

As a further improvement of the scheme, the method comprises the following steps:

the method comprises the following steps: mounting the support to a position, close to a steel wire rope, below a floor of a guide wheel of the friction type elevator, and adjusting the length of the telescopic supporting leg according to field conditions so as to adjust the height of the cross beam; selecting a corresponding number of thrust devices according to the type of the tested machine, fixing the thrust devices on the cross beam through the matching of the positioning holes, the limiting holes and the positioning pins, and adjusting the distance between the thrust devices to enable the center position of the non-elastic knocking hammer to be aligned with the tested steel wire rope;

step two: adsorbing a corresponding number of wireless acceleration sensors on each tested steel wire rope, ensuring that the wireless acceleration sensors are completely wrapped in the sensor protection clamp, and locking the sensor protection clamp;

step three: and starting the switch, pushing out the non-elastic knocking hammer by each pushing device to vertically hit the steel wire rope to be tested so as to generate transverse vibration, wirelessly transmitting vibration waveform parameters to a data processing system by the wireless acceleration sensor, obtaining tension values through calculation, analyzing tension deviation of the steel wire rope to be tested, giving an adjustment suggestion, and completing the tension test of the steel wire rope of the friction type elevator.

The invention has the beneficial effects that:

compared with the prior art, the steel wire rope tension test device has the advantages that the sliding rails are arranged on the cross beam, the base provided with the thrust device slides on the sliding rails to adjust the position, the non-elastic knocking hammer corresponds to the center of the steel wire rope, the thrust device is released by starting the switch, the non-elastic knocking hammer impacts the steel wire rope to generate transverse vibration, the wireless acceleration sensor wirelessly transmits vibration waveform parameters to the data processing system, tension values are obtained through calculation, tension deviation of the steel wire rope tested is analyzed, adjustment suggestions are given, and the steel wire rope tension test of the friction type elevator is completed. The invention provides a device and a method for testing tension of a steel wire rope of a mining friction type elevator, and provides the device and the method for testing the tension of the steel wire rope of the friction type elevator, which are convenient, effective, easy to implement, safe and reliable, so that the aim of improving efficiency is fulfilled. The invention takes the current coal mine field test condition as a starting point, the test device does not need to reform the existing equipment, the lifting system is not influenced, the lifting equipment with different wire rope numbers can be adapted by increasing and decreasing the thrust device and the number of the non-elastic knocking hammers, and the disassembly and the transportation are easy. The testing method provided by the invention has the advantages of simple structure, easy implementation and strong universality, can realize quick and effective tension testing, and can obtain accurate testing results.

Drawings

The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings, in which:

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the thrust unit of the present invention;

fig. 3 is a schematic view of the connection between the sensor protection clamp and the steel wire rope according to the present invention.

Detailed Description

As shown in fig. 1-3, the tension testing device and method for a steel wire rope of a mining friction type elevator provided by the invention comprises a support 1, a wireless acceleration sensor 6, a sensor protection clamp 7 and a data processing system 8, wherein a cross beam 2 is arranged on the support 1 in a cross manner, the support 1 is provided with a telescopic leg, position adjusting holes are respectively arranged at the positions 1.2m, 1.5m and 1.8m away from the bottom end surface of the telescopic leg, a slide rail is transversely arranged on the cross beam 2, a plurality of positioning holes are uniformly distributed on the slide rail along the extending direction of the slide rail, a base 3 is slidably arranged on the slide rail, a limiting hole 31 is arranged on the base 3 corresponding to the positioning holes, a positioning pin is inserted into the positioning hole and the limiting hole 31 to limit the position of the base 3, a thrust device 5 is arranged on the base 3, the thrust device 5 comprises a scissor type telescopic arm 51 and a non-elastic, the non-elastic knocking hammer 4 is filled with a plurality of steel balls, and the non-elastic knocking hammer 4 is used for absorbing rebounding during knocking, has strong knocking force and does not damage the surface of the steel wire rope. The thrust device 5 is driven by electromagnetic control, the wireless acceleration sensor 6 is adsorbed on a steel wire rope of the friction type hoister by magnetic force, the outside is fixedly clamped by a sensor protection clamp 7, and the wireless acceleration sensor 6 wirelessly transmits data to a data processing system 8.

Further improve, it is provided with two sets ofly to cut flexible arm 51 of fork, is provided with a plurality of connecting rods 52 between two sets of flexible arm 51's of the fork pin joint of cutting, increases connecting rod 52 quantity, improves device bearing capacity and structural rigidity.

Further improved, the upper end of the scissor type telescopic arm 51 close to the base 3 is hinged with the base 3, and the lower end is arranged in the sliding groove 53 of the base 3 in a sliding manner.

Further improve, flexible landing leg comprises the sleeve pipe that the pipe diameter is not of uniform size, through ball and recess joint between two liang of sleeve pipes that close on.

The invention is tested by the following steps:

the method comprises the following steps: the support 1 is arranged at a position, close to a steel wire rope, below a floor of a guide wheel of the friction type elevator, and the length of the telescopic supporting leg is adjusted according to field conditions so as to adjust the height of the cross beam 2; selecting a corresponding number of thrust devices 5 according to the tested model, fixing the thrust devices 5 on the cross beam 2 through the matching of the positioning holes, the limiting holes 31 and the positioning pins, and adjusting the distance between the thrust devices 5 to enable the center position of the non-elastic knocking hammer 4 to be aligned with the tested steel wire rope;

step two: adsorbing a corresponding number of wireless acceleration sensors 6 on each tested steel wire rope, ensuring that the wireless acceleration sensors 6 are completely wrapped in a sensor protection clamp 7, and locking the sensor protection clamp 7;

step three: and starting a switch, pushing each non-elastic knocking hammer 4 out by each pushing device 5 to vertically knock on each tested steel wire rope so as to generate transverse vibration, wirelessly transmitting vibration waveform parameters to a data processing system 8 by a wireless acceleration sensor 6, obtaining each tension value through calculation, analyzing tension deviation of each tested steel wire rope, giving an adjustment suggestion, and completing the tension test of the steel wire rope of the friction type elevator.

The above embodiments are not limited to the technical solutions of the embodiments themselves, and the embodiments may be combined with each other into a new embodiment. The above embodiments are only for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement without departing from the spirit and scope of the present invention should be covered within the technical solutions of the present invention.

Claims

1. a mine friction type hoist wire rope tension testing device, is characterized in that: comprise a bracket, a wireless acceleration sensor, a sensor protection fixture and a data processing system, the bracket is provided with a beam across, and the bracket is provided with Telescopic outriggers, the telescopic outriggers are provided with position adjustment holes at 1.2m, 1.5m and 1.8m from the bottom end face, and slide rails are arranged laterally on the beams, and the slide rails are evenly arranged along the extension direction. There are a plurality of positioning holes, a base is slidably arranged on the slide rail, a limit hole is set on the base corresponding to the positioning hole, and a positioning pin is inserted into the positioning hole and the limit hole to limit the base The base is provided with a thrust device, the thrust device includes a scissor-type telescopic arm and a non-elastic percussion hammer arranged at the end of the scissor-type telescopic arm, and the non-elastic percussion hammer is filled with There are a plurality of steel balls, the thrust device is driven by electromagnetic control, the wireless acceleration sensor is magnetically adsorbed on the wire rope of the friction hoist, and the outside is fixed and clamped by the sensor protection fixture, and the wireless acceleration sensor sends data wirelessly to the hoist. data processing system.

2. A mine friction hoist wire rope tension testing device according to claim 1, wherein the scissor-type telescopic boom is provided with two groups, and between the hinge points of the two groups of scissor-type telescopic booms A plurality of connecting rods are provided.

3. A kind of mining friction hoist wire rope tension test device according to claim 1 or 2, characterized in that: the upper end of the scissor-type telescopic arm close to the base is hinged with the base, and the lower end is slidably arranged on the slide of the base. in the slot.

4. A mine friction type hoist wire rope tension test device according to claim 1, wherein the telescopic outriggers are composed of casings with different diameters, and the two adjacent casings pass between the two adjacent casings. The ball is snapped into the groove.

5. the using method of a kind of mine friction type hoist wire rope tension testing device according to claim 1, is characterized in that: comprises the following steps:

Step 1: Install the bracket to the position near the wire rope on the lower floor of the guide wheel of the friction hoist, adjust the length of the telescopic outrigger according to the site conditions to adjust the height of the beam; select the corresponding number of thrust devices according to the tested model, and use the The matching of the positioning hole, the limit hole and the positioning pin, fix it on the beam, adjust the distance between the thrust devices so that the center of the non-elastic percussion hammer is aligned with the wire rope to be tested;

Step 2: Adsorb the corresponding number of wireless accelerometers on the wire ropes to be tested to ensure that the wireless accelerometers are completely wrapped in the sensor protection fixture, and lock the sensor protection fixture tightly;

Step 3: Turn on the switch, each thrust device pushes the non-elastic percussion hammer vertically and strikes the steel wire rope tested, causing it to vibrate laterally. The wireless acceleration sensor wirelessly transmits the vibration waveform parameters to the data processing system, and each tension force is calculated. Numerical value and analysis of the wire rope tension deviation of each test, give adjustment suggestions, and complete the friction hoist wire rope tension test.