WO2016141761A1 - Procédé et appareil de détection complète de frottement de garniture de frottement et de câble en acier pour un treuil - Google Patents

Procédé et appareil de détection complète de frottement de garniture de frottement et de câble en acier pour un treuil Download PDF

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Publication number
WO2016141761A1
WO2016141761A1 PCT/CN2015/099149 CN2015099149W WO2016141761A1 WO 2016141761 A1 WO2016141761 A1 WO 2016141761A1 CN 2015099149 W CN2015099149 W CN 2015099149W WO 2016141761 A1 WO2016141761 A1 WO 2016141761A1
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Prior art keywords
wire rope
friction
pad
creeping
bracket
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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/CN2015/099149
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English (en)
Chinese (zh)
Inventor
彭玉兴
朱真才
常向东
王大刚
曹国华
陈国安
李伟
周公博
沈刚
卢昊
李同清
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China University of Mining and Technology Beijing CUMTB
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China University of Mining and Technology Beijing CUMTB
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Application filed by China University of Mining and Technology Beijing CUMTB filed Critical China University of Mining and Technology Beijing CUMTB
Priority to AU2015385477A priority Critical patent/AU2015385477B2/en
Publication of WO2016141761A1 publication Critical patent/WO2016141761A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G01N19/02—Measuring coefficient of friction between materials

Definitions

  • the invention relates to a comprehensive friction detecting device and method for a wire rope and a friction pad for a hoisting machine.
  • the mining depth of the mine is constantly increasing.
  • the friction type mine hoist has unique advantages in lifting capacity, lifting height and lifting speed. In addition, it has the advantages of high safety factor and small structural size, which makes its application in mine lifting more and more. The more extensive, however, when the lifting depth exceeds 1600m, the friction hoist can no longer meet the required requirements, and the winding hoist needs to be used instead.
  • Lifting wire rope and friction pad are important components to ensure the normal operation of the friction hoist. The friction between the wire rope and the friction pad determines the lifting capacity of the friction hoist. In the winding hoist, the wire rope and the wire rope are not available. Avoiding various contact friction behaviors, the friction and wear of the wire rope also determines the service life of the winding hoist.
  • the friction characteristics between the friction pad and the wire rope, the wire rope and the wire rope determine the safety and reliability of the hoist. Once the slip between the wire rope and the friction pad causes the wire rope or the hoist wire rope to be broken or even broken due to friction and wear, it will cause unimaginable casualties and property damage to the mine. Therefore, mastering the friction and wear characteristics between the wire rope and the friction pad and the wire rope and the wire rope is of great significance to ensure the safe and reliable operation of the hoist.
  • the friction hoist and the winding hoist were tested in the field to obtain the friction characteristics between the friction pad and the wire rope, the wire rope and the wire rope, which could not be realized under the existing working conditions and technical conditions. Therefore, the design and manufacture of a simple lifting device, safe and convenient operation, real and comprehensive simulation of the actual lifting conditions of the hoist, and the test device and method for testing the friction and wear characteristics of the wire rope and the friction pad are particularly necessary.
  • the object of the present invention is to overcome the deficiencies in the prior art, and to provide a comprehensive friction detecting device and method for a wire rope and a friction pad for a hoisting machine, which can simulate different working conditions on a testing machine.
  • the wire rope and the wire rope cross-contact high-speed sliding friction, creeping friction and the high-speed sliding friction of the wire rope and the friction pad in the friction hoist.
  • a comprehensive friction detecting device for a wire rope and a friction pad for a hoisting machine comprising a base frame, a wire rope and a wire rope disposed on the base of the base frame (01), a continuous high-speed sliding friction system, a wire rope and a wire rope cross-contact continuous creep Dynamic friction and wear system and continuous high-speed sliding friction system of wire rope and friction pad;
  • the base frame includes a base (01), four uprights (05) symmetrically welded on the base (01), a load beam (06) welded above the uprights (05), and a circular shape for guiding on the left side of the base (01).
  • a groove (21), a right side of the base (01) is welded with a guide rail (19) for guiding and a cylinder baffle (18) for fixing the hydraulic cylinder (17);
  • the wire rope and the wire rope cross-contact continuous high-speed sliding friction system including the servo speed regulating motor one (02), the active friction wheel (04), the driven friction wheel (14), the upper pressing wire rope (07), the lower pressing wire rope (29) and Jointless wire rope (13) for simulating the cross-contact continuous high-speed sliding friction between the upper compression wire rope (07), the lower compression wire rope (29) and the jointless steel wire rope (13), the servo speed control motor (02)
  • the output shaft is connected to the reducer (03) through the keyway, the active friction wheel (04) and the output shaft of the reducer (03) are connected by a key, and the unconnected wire rope (13) is placed over the active friction wheel (04) and the driven friction wheel (14).
  • the active friction wheel (04) and the driven friction wheel (14) drive the continuous wire rope (13) to continuously move at a high speed
  • the driven friction wheel (14) is supported on the driven wheel bracket (15), the driven wheel bracket (15) and The sliding rail (19) welded on the base (01) is matched.
  • the driven wheel bracket (15) is equivalent to a slider and slides to the left along the sliding rail (19).
  • the tension of the jointless wire rope (13) is tensioned, and the upper pressure wire rope (07) is tensioned on the upper liner (37) and the upper liner clamp (10), under
  • the pressing wire rope (29) is tensioned on the lower pad (36) and the lower pad bracket (20), and the lower pad bracket (20) is fixed to the base (01) by bolts, and the upper part of the lower pad bracket (20) is passed Bolt-fixed pad rail frame (26) for ensuring accurate symmetry of the wire rope contact point.
  • the servo push rod motor (09) is vertically fixed to the load-bearing beam (06) for lowering the wire rope (07) downward Provide different load pressures;
  • Wire rope and wire rope cross-contact continuous creep friction and wear system for simulating cross-contact continuous creep friction wear between upper compression wire rope (07), lower compression wire rope (29) and creep wire rope (27), including servo speed control motor II (22)
  • An eccentric disk (23) fixedly connected to the output shaft of the servo speed regulating motor 2 (22), connecting the eccentric disk (23) and the connecting rod (25) of the creeping wire rope tensioning frame (11), eccentric
  • the disc (23) and the servo speed regulating motor 2 (22) constitute an eccentric motor
  • the connecting rod (25) and the creeping wire rope tensioning frame (11) constitute a crank slider mechanism, and also includes a creeping wire rope ( 27)
  • Continuous high-speed sliding friction system for wire rope and friction pad for simulating continuous high-speed sliding friction wear between the jointless wire rope (13) and the front friction pad (48) and the rear friction pad (50), including servo-regulated motors One (02), reducer (03), active friction wheel (04), driven friction wheel (14), jointless wire rope (13), driven wheel bracket (15), hydraulic cylinder (17), front friction pad ( 48), rear friction pad (50), pad compression box (12), embedded in the pad compression box (12), sleeved front friction pad (48), rear friction pad (50) And ensure the pad linkage clamp (52) that moves synchronously during the pressing process, and the servo pusher motor 2 (47) for providing a pressure load to the friction pad.
  • the top surface of the lower pad bracket (20) is provided with four threaded through holes on the surface contacting the lower pad (36), and the corresponding lower bottom surface is provided with four adjusting bolts (35) for adjusting the lower lining
  • the height of the pad (36) effectively avoids the influence of the dimensional error of the lower pad bracket (20) during the machining process, and ensures that the wire rope can be tightened with the unconnected wire rope (13) while maintaining the level during the test. (07) Close contact with the lower compression wire (29).
  • the bottom roller (30) is arranged at the bottom of the creeping wire rope tensioner (11), so that the reading of the tension pressure sensor (24) is closer to the true friction value.
  • the gasket pressing box (12) is composed of four steel plates connected together to form a box body, the gasket linkage clamp (52), and the servo push rod motor two (47) are arranged in the gasket pressing box ( 12)
  • the pad interlocking clamp (52) comprises two steel plates, and the front friction pad (48) and the rear friction pad (50) are fixed between the two steel plates, and the two steel plates are cross-connected together.
  • Two steel sheets (55) are connected in one piece, and the middle portions of the two steel sheets (55) are hinged.
  • the four free ends of the two steel sheets are respectively hinged at the two ends of the two steel sheets, and the other side of the two steel sheets
  • the same two steel sheets (55) are symmetrically arranged, so that the distance between the two steel sheets can be adjusted, and the synchronous movement of the front friction pad (48) and the rear friction pad (50) during friction wear is realized.
  • a grinding wheel (53) is arranged on the bottom surface of the gasket pressing box (12), so that the gasket pressing box (12) slides back and forth relatively easily, ensuring the jointless wire rope (13) and the front friction pad (48), the rear friction pad (50) is always horizontally not bent during the sliding friction process, which plays an automatic centering role; the servo push rod motor two (47) Pressure is applied to the pad linkage clamp (52) to clamp the front friction pad (48) and the rear friction pad (50) to the connectorless wire rope (13), and the magnitude of the pressure can be measured by the pressure sensor three (46).
  • the acoustic emission sensor one (40) disposed on the lower liner (36) and the acoustic emission sensor two (49) disposed on the rear friction pad (50) can monitor the sliding friction, creep friction and friction of the wire rope in real time.
  • the variation of the crack generation and expansion of the gasket in the sliding friction state; the strain gauge (51) attached to the front friction pad (48) can monitor the surface stress of the front friction pad (48) during the sliding friction motion in real time. Changes.
  • the circular guide rails are arranged in the pad rail frame (26), and the lower pad (36) and the upper pad (37) are provided.
  • the side cutting has two arc-shaped grooves matching the circular arc-shaped convex rails of the pad rail frame (26), ensuring that the upper pad (37) and the lower pad (36) move in the vertical direction.
  • the upper pad (37) and the upper pressing wire rope (07) and the lower pad (36) are in contact with the lower pressing wire rope (29), and are provided with an upper pressing wire rope (07) and pressing down.
  • the lower pressing wire rope (07) is embedded in the semi-circular groove at the bottom of the upper gasket (37), the upper gasket clamp (10) is placed over the upper gasket (37), and the steel wire rope is pressed (07)
  • the above liner clamp (10) housing is over-supported and tensioned on the upper liner clamp (10) by the tensioning rope basket (38), thus pressing the wire rope (07), the upper liner (37) and the upper
  • the pad clamps (10) are bundled together and can be moved up and down along the rails on the pad rail frame (26) to facilitate the positioning of the wire rope (07).
  • two sections of the upper part of the upper liner clamp (10) horizontally extending for supporting the upper steel wire rope (07) are respectively mounted with a small pulley (39), which effectively reduces the upper compression wire rope (07) The frictional resistance that is overcome during the tensioning process.
  • the upper pressing wire rope (29) is embedded in the semi-circular arc groove cut by the upper side of the lower liner (36), and the lower end is tensioned and fixed by the lower tightening rope basket (31) under the lower rope basket (31).
  • the pad support (20) is such that the lower pad (36), the lower pad bracket (20) and the lower pressing wire rope (29) are integrated, and the bottom pad bracket (20) is welded at the bottom of the two supporting legs.
  • the compression wire rope (07) and the lower pressure wire rope (29) rotate together to realize the conversion between the wire rope and the wire rope cross-contact high-speed friction test system and the creep friction test system, and can also realize the cross-contact sliding of the simulated wire rope and the wire rope at different angles. Friction and the state of motion of peristaltic friction.
  • a circular hole (21) for fixing the lower gasket bracket (20) is arranged beside the circular groove (21) processed on the right side of the base frame (01), and the threaded holes (54) appear in pairs, and a plurality of groups are arranged. They are at a certain angle from each other to facilitate the fixing of the lower pad bracket (20) after being rotated by a certain angle.
  • the top surface of the lower pad bracket (20) is provided with four threaded through holes on the surface contacting the lower pad (36), and the corresponding lower bottom surface is provided with four adjusting bolts (35), and the lower pad can be adjusted (
  • the height of 36) effectively avoids the influence of the dimensional error of the lower pad bracket (20) during processing, and ensures the jointless wire rope during the test (13) It can be in close contact with the upper compression wire (07) and the lower compression wire (29) while maintaining the level.
  • the eccentric disc (23) and the tensioning pressure sensor (24) and the connecting rod (25) are connected with the peristaltic wire rope tensioning frame (11) in a hinge manner to ensure that the members can rotate relative to each other in a vertical plane.
  • the normal operation of the crank slider mechanism is achieved.
  • the peristaltic wire rope (27) is fixed on the creeping wire rope tensioning frame (11) by a threaded hook (28), and the bottom of the end of the peristaltic wire rope tensioning frame (11) is connected with the bottom plate by a dovetail groove, and the tensioning motor is 32)
  • the horizontal sliding backwards can realize the tension of the creeping wire rope (27), and the roller (30) is installed at the bottom of the whole creeping wire rope tensioning frame (11), which reduces the creeping wire rope tensioning frame (11)
  • the frictional resistance during the reciprocating motion improves the accuracy of the creeping friction measurement of the wire rope and the wire rope.
  • the pad linkage clamp (52) is divided into two parts, the two parts are connected together by two sets of steel sheets (55) which are cross-connected together, and the front friction pad (48) and the rear are realized. Synchronous movement of the friction pad (50) during friction wear.
  • the gasket pressing box (12) is composed of four steel plates connected together, and a grinding roller (53) is arranged on the bottom surface of the gasket pressing box (12), so that the gasket is pressed against the casing (12)
  • the relatively easy front and rear sliding ensures that the jointless wire rope (13) and the front friction pad (48) and the rear friction pad (50) are always horizontally not bent during the sliding friction process, thereby playing an automatic centering role.
  • a pressure sensor (08) is connected to the output end of the servo push rod motor (09), and the positive pressure between the steel ropes can be measured in real time;
  • the connection between the hydraulic oil cylinder (17) and the driven wheel bracket (15) is Tension sensor (16) for measuring the tension of the jointless wire rope (13); pressure sensor two (33) between the tensioning motor (32) and the baffle on the creeping wire rope tensioner (11)
  • the servo pusher motor 2 (47) provides pressure to the pad interlocking clamp (52) to make the front friction pad (48) and the rear friction pad ( 50) Clamp the jointless wire rope (13), the pressure can be measured by the pressure sensor three (46).
  • the corresponding sliding friction force is measured by three tension sensors (41, 43, 45) disposed at corresponding positions of the jointless wire rope (13), and the wire rope between the tension sensor one (41) and the tension sensor two (43)
  • the sliding friction contact point is in contact with the wire rope
  • the sliding friction contact point between the tension wire sensor (43) and the tension sensor three (45) is between the wire rope and the friction pad, between the tension sensor one (41) and the tension sensor two (43)
  • the difference is the friction between the wire rope and the wire rope.
  • the difference between the tension sensor two (43) and the tension sensor three (45) is the friction between the wire rope and the friction pad.
  • the acoustic emission sensor II (49) can monitor the variation of crack generation and expansion of the wire rope in sliding friction, creep friction and friction pad in the sliding friction state in real time.
  • infrared camera 1 (42) and infrared camera 2 (44) can monitor the temperature change of friction pad in sliding friction and wire rope during sliding and creep friction movement.
  • the strain gauge (51) attached to the front friction pad (48) can monitor the change of the surface stress of the front friction pad (48) during the sliding friction movement in real time.
  • the servo push rod motor outputs different pressure loads
  • water is sprayed on the jointless wire rope (13) or grease is applied
  • the jointless wire rope (13) and the creeping wire rope (27) are applied with different tensions. It can simulate the actual lifting conditions of the mine hoist.
  • the test method for friction detection by using the wire rope and the friction pad integrated friction detecting device of the hoist can respectively simulate the cross-contact continuous high-speed sliding friction condition between the wire rope and the wire rope, and the continuous creeping of the wire rope and the wire rope cross contact. Friction working condition, continuous high-speed sliding friction condition of steel wire rope and friction pad, and detecting relevant friction and wear parameters under various working conditions;
  • the continuous high-speed sliding friction between the simulated wire rope and the wire rope includes the following steps:
  • A1 Mount the jointless wire rope (13) on the active friction wheel (04) and the driven friction wheel (14), and adjust the hydraulic cylinder (17) to pull the driven wheel bracket (16) together with the driven wheel (14) to the right. Tensioning the unconnected wire rope (13) to make it level tight;
  • A2 Fix the lower pad bracket (20), and tighten the upper pressing wire rope 07 and the lower pressing wire rope (29) on the upper pad clamp (10) and the lower pad bracket (20), and the pad rail bracket (26) fixedly connected with the lower pad bracket (20), put the tensioned upper pressing wire rope (07) along the guide rail, and open the servo push rod motor (09) to apply a positive pressure load to the upper pad clamp.
  • the clamping of the unconnected wire rope (13) by the upper and lower wire ropes is completed;
  • A3 Start the servo speed regulating motor (02), and output the large enough torque through the reducer (03) to drive the active friction wheel (04) to rotate.
  • the frictionless transmission makes the jointless wire rope (13) rotate continuously at high speed in one direction;
  • the continuous creeping friction between the wire rope and the wire rope includes the following steps:
  • C1 Place the peristaltic wire rope tensioner (11) on the support table, and fix the peristaltic wire rope (27) to the peristaltic wire rope tensioner (11) with a threaded hook (28) so that the peristaltic wire rope (27) is pressed down. Tightening the wire rope (29), opening the tensioning motor (32) to tension the peristaltic wire rope (27), adjusting the adjusting nut (35) and the lower rope basket (31) to maintain the creeping wire rope (27) and the lower pressing wire rope (29) ) Cross-contact, put the upper pressure wire rope (07), fix the pad rail frame (26), and start the servo push rod motor (09) to press it;
  • the continuous high-speed sliding friction between the simulated steel wire rope and the steel wire rope, the continuous high-speed sliding friction of the steel wire rope and the friction pad can be simultaneously performed; the three working conditions can be converted;
  • the sliding friction between the wire rope and the wire rope and/or between the wire rope and the friction pad can be measured by three tension sensors (41, 43, 45), between the tension sensor one (41) and the tension sensor two (43)
  • For the wire rope and the wire rope cross-contact sliding friction contact point between the tension sensor two (43) and the tension sensor three (45) is the sliding friction contact point between the wire rope and the friction pad, the tension sensor one (41) and the tension sensor two (43)
  • the difference between the two is the friction between the wire rope and the wire rope.
  • the difference between the tension sensor two (43) and the tension sensor three (45) is the sliding friction between the wire rope and the friction pad. Friction
  • the lower pad bracket (20) can be rotated at any angle in the circular groove (21) on the base (01) and then fixed, thereby adjusting the angle of the cross contact between the wires.
  • the eccentric disk (23) on the cam motor is machined with a plurality of threaded holes at different distances from the center of the circle to meet the requirements of different creep amplitudes of the creeping wire rope.
  • the invention functionally breaks the frictional characteristics between the wire ropes in the winding hoist
  • the detection of high-speed sliding friction between the wire rope and the friction pad in the friction hoist can realize the high-speed sliding friction between the wire rope and the wire rope, the cross-contact creep friction wear and the high-speed sliding friction between the wire rope and the friction pad.
  • the simulation of friction behavior, the speed of sliding friction can reach up to 10m / s. It can obtain the variation of friction and friction coefficient, wear rate, temperature rise, strain, crack generation and expansion of friction pad and wire rope under different specific pressure, different sliding speed, different wire rope tension, and different pressure of wire rope and wire rope.
  • Figure 1 is a front elevational view of the structure of the invention
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
  • Figure 3 is an enlarged view of a partial structure of the present invention.
  • Figure 4 is a sliding friction structure diagram
  • Figure 5 is a view showing the internal structure of the gasket pressing box
  • Figure 6 is a plan sectional view taken along line B-B of Figure 4.
  • a wire rope and friction pad integrated friction detecting device for hoisting machine is used to simulate the continuous high-speed sliding friction condition between the wire rope and the wire rope, and the continuous creeping friction condition of the wire rope and the wire rope.
  • the wire rope and the friction pad are continuously subjected to high-speed sliding friction conditions, and the relevant friction and wear parameters under various working conditions are detected.
  • the device comprises a base frame, a steel wire rope disposed on the base frame 01 and a wire rope cross-contact continuous high-speed sliding friction system, Wire rope and wire rope cross-contact continuous creep friction wear system and wire rope and friction pad continuous high-speed sliding friction system.
  • the power source drives the active friction wheel 04 to rotate and drives the jointless wire rope 13 to move at a high speed.
  • the test device can simulate the cross-contact continuous high-speed sliding friction between the wire rope and the wire rope and the continuous high-speed sliding friction state between the wire rope and the friction pad, when the active friction
  • the wheel 04 stops moving, removes the jointless wire rope 13, rotates the lower pad bracket 20 by 90°, and provides a new power source to simulate the creep friction wear condition between the wire rope and the wire rope;
  • the base frame includes a base 01, four uprights 05 symmetrically welded on the base 01, a load beam 06 welded above the uprights 05, a left circular groove 21 for guiding on the left side of the base 01, and a guide on the right side of the base 01 for guiding a slide rail 19 and a cylinder baffle 18 for fixing the hydraulic cylinder 17;
  • the wire rope and the wire rope cross-contact continuous high-speed sliding friction system including the servo speed regulating motor 02, the active friction wheel 04, the driven friction wheel 14, the upper pressing wire rope 07, the lower pressing wire rope 29 and the jointless wire rope 13 for simulating the upper pressure
  • the cross-contact between the tight wire rope 07, the lower pressure wire rope 29 and the jointless wire rope 13 is continuous high-speed sliding friction
  • the servo speed regulating motor 02 output shaft is connected to the speed reducer 03 through the keyway, and the output shaft of the active friction wheel 04 and the speed reducer 03 are passed.
  • the unconnected wire rope 13 is sleeved on the active friction wheel 04 and the driven friction wheel 14, and the active friction wheel 04 and the driven friction wheel 14 drive the continuous wire rope 13 to continuously move at a high speed, and the driven friction wheel 14 is supported on the driven wheel bracket 15.
  • the driven wheel bracket 15 cooperates with the slide rail 19 welded on the base 01. Under the pulling of the hydraulic cylinder 17, the driven wheel bracket 15 acts as a slider and slides leftward along the slide rail 19 to realize the jointless wire rope 13
  • the guiding tension is tensioned
  • the upper pressing wire 07 is tensioned on the upper pad 37 and the upper pad clamp 10
  • the lower pressing wire 29 is tensioned on the lower pad 36 and the lower pad bracket 20.
  • the pad holder 20 is bolted to the base 01, the liner
  • the upper part of the pad bracket 20 is fixed by bolts to the guide rail frame 26 for ensuring accurate symmetry of the wire rope contact point, and the servo push rod motor 09 is vertically fixed on the load beam 06 for providing different loads to the upper pressure wire rope 07 downward. pressure.
  • the threaded through hole is formed on the surface of the lower pad bracket 20 at the top of the lower pad 36, and the corresponding lower bottom surface is provided with four adjusting bolts 35, which can adjust the height of the lower pad 36, effectively avoiding The influence of the dimensional error of the lower pad holder 20 during processing ensures that the unsealed wire rope 13 is in level contact with the upper compression wire 07 and the lower compression wire 29 during the test.
  • the tight rope basket 31 can be used to press down the steel cord 29, and the bottom tight rope basket 31 is connected to the lower pressing wire rope 29 at one end, and the other end is connected to the lower liner bracket 20;
  • the basket 38 is tightly pressed against the wire rope 07, and one end of the tensioning rope basket 38 is connected to the upper wire rope 07, and the other end is attached to the upper liner jig 10.
  • the wire rope and the wire rope are in continuous contact with the peristaltic friction and wear system for simulating the cross-contact continuous creep friction wear between the upper pressing steel wire rope 07, the lower pressing steel wire rope 29 and the creeping steel wire rope 27, including the servo speed regulating motor 22, and the fixed connection in the servo
  • the eccentric disk 23 on the output shaft of the speed regulating motor 22 is connected to the eccentric disk 23 and the connecting rod 25 of the creeping wire rope tensioning frame 11, and the eccentric disk 23 and the servo speed regulating motor 22 constitute an eccentric motor, plus
  • the connecting rod 25 and the creeping wire rope tensioning frame 11 constitute a crank slider mechanism, and further comprise a creeping wire rope 27, and a threaded hook 28 for fixing the creeping wire rope 27 to the creeping wire rope tensioning frame 11 for clamping the creeping wire 27
  • the bottom roller 30 is disposed at the bottom of the creeping wire rope tensioner 11 so that the reading of the tension sensor 24 is closer to the true friction value.
  • Continuous high-speed sliding friction system for wire rope and friction pad for simulating continuous high-speed sliding friction wear between the jointless wire rope 13 and the front friction pad 48 and the rear friction pad 50, including servo speed motor 02, reducer 03 Active friction wheel 04, driven friction wheel 14, jointless wire rope 13, driven wheel bracket 15, hydraulic cylinder 17, front friction pad 48, rear friction pad 50, gasket compression box 12, embedded in gasket pressure A pad linkage clamp 52 for covering the front friction pad 48 and the rear friction pad 50 on the tight case 12 and ensuring its synchronous movement during the pressing process, and a servo push rod motor for providing a pressure load to the friction pad 47; servo speed motor one 02, reducer 03, active friction
  • the wheel 04, the driven friction wheel 14, the jointless wire rope 13, the driven wheel bracket 15, and the hydraulic cylinder 17 are disposed in cross-contact continuous high-speed sliding friction system with the wire rope and the wire rope described above.
  • the pad compression box 12 is composed of four steel plates joined together to form a box body, a pad interlocking jig 52 and a servo push rod motor 2 47 is disposed inside the cushion pressing box 12,
  • the pad interlocking clamp 52 includes two steel plates, and the front friction pad 48 and the rear friction pad 50 are fixed between the two steel plates, and the two steel plates are cross-connected between
  • the two steel sheets 55 together are integrally connected, and the middle portions of the two steel sheets 55 are hinged, and the four free ends of the two steel sheets are respectively hinged at the two ends of the two steel sheets, and the other side of the two steel sheets is also symmetrical.
  • the same two steel sheets 55 are arranged in succession so that the distance between the two steel sheets can be adjusted, and the synchronous movement of the front friction pad 48 and the rear friction pad 50 during the friction wear process is realized;
  • the bottom surface of the 12 is provided with the anti-friction roller 53, so that the cushion pressing box 12 slides back and forth relatively easily, ensuring that the jointless wire rope 13 and the front friction pad 48 and the rear friction pad 50 are always horizontally not bent during the sliding friction process. , played a role in automatic alignment;
  • the servo pusher motor 2 47 supplies pressure to the pad interlocking clamp 52 to clamp the front friction pad 48 and the rear friction pad 50 to the connectorless wire rope 13, and the magnitude of the pressure can be measured by the pressure sensor 36;
  • the acoustic emission sensor 40 disposed on the lower liner 36 and the acoustic emission sensor 249 disposed on the rear friction pad 50 are capable of real-time monitoring of the occurrence of cracks in the sliding friction, peristaltic friction, and frictional pad frictional state of the wire rope.
  • the variation rule of the expansion; the strain gauge 51 attached to the front friction pad 48 can monitor the change of the surface stress of the front friction pad 48 during the sliding friction movement in real time.
  • test procedure is as follows:
  • the simultaneous simulation of the high-speed sliding friction of the wire rope and the wire rope and the high-speed sliding friction of the wire rope and the friction pad may also be separately simulated.
  • Step 1 Install the jointless wire rope 13 on the active friction wheel 04 and the driven friction wheel 14, and adjust the hydraulic cylinder 17 to pull the driven wheel bracket 16 together with the driven wheel 14 to the right, and tension the jointless wire rope 13 to make it horizontally stretched. tight.
  • Step 2 Fixing the lower pad bracket 20, tensioning the upper pressing wire rope 07 and the lower pressing wire rope 29 on the upper pad clamp 10 and the lower pad bracket 20, and the pad rail frame 26 and the lower pad bracket 20 Fixed connection, put the tensioned upper pressing wire rope 07 along the guide rail, open the servo push rod motor-09 and apply a positive pressure load to the upper pad clamp, and complete the clamping of the upper and lower wire ropes to the jointless wire rope 13 ( Do not perform this step when simulating the high-speed sliding friction simulation of the wire rope and the friction pad separately, and jump directly from step 1 to step 3).
  • Step 3 Put the front friction pad 48 and the rear friction pad 50 into the pad interlocking clamp 52, and cause the front friction pad 48 and the rear friction pad 50 to clamp the connectorless wire rope 13 to open the servo push rod motor 2 47, to the front friction pad 48 Apply pressure load (do not perform this step separately when the wire rope and the wire rope cross-contact high-speed sliding friction simulation, jump directly from step 2 to step 4).
  • Step 4 Start the servo speed regulating motor 02, and output a sufficiently large torque through the speed reducer 03 to drive the active friction wheel 04 to rotate, and the unconnected wire rope 13 is continuously rotated in one direction by the friction transmission;
  • the sliding friction between the wire rope and the wire rope and/or between the wire rope and the friction pad can be measured by the three tension sensors 41, 43, 45.
  • the tension between the tension sensor 41 and the tension sensor 23 is the wire rope and the wire rope.
  • Sliding friction contact point, between the tension sensor two 43 and the tension sensor three 45 is a sliding friction contact point between the wire rope and the friction pad, and the difference between the tension sensor 41 and the tension sensor two 43 is the wire and the wire rope cross-contact sliding friction
  • the friction generated, the difference between the tension sensor two 43 and the tension sensor three 45 is the frictional force in the sliding frictional motion state of the wire rope and the friction pad.
  • Figure 2 is a test system for simulating the peristaltic frictional motion of the wire rope and the wire rope (A-A view in Figure 1). If the experiment is changed from the test shown in FIG. 4 to the creeping frictional motion of the wire rope and the wire rope, the tension of the hydraulic cylinder 17 to the jointless wire rope 13 is first removed, and the jointless wire rope 13 is taken from the active friction wheel 04. under. The positive pressure acting on the upper pressing wire 07 is removed, the bolt fixing the lower pad bracket 20 is unscrewed, and the lower pad bracket 20 is rotated by 90° along the circular groove 21 to become the position shown in FIG.
  • the simulation of the frictional force during the creeping friction is measured by a tensile pressure sensor.
  • the infrared thermal imager 42 and the infrared thermal imager 24 can be used to monitor the temperature change of the friction pad during the sliding friction process, and the temperature of the wire rope during the sliding and peristaltic friction movement. Changes.
  • the thrust of the servo push rod motor can be adjusted to meet the simulation of high-speed sliding friction, creep friction and high-speed sliding friction motion of the wire rope and the friction pad under different positive pressure conditions.
  • the speed of the servo speed regulating motor can meet the requirements of different line speeds of the jointless wire rope 13 and different creeping frequencies of the creeping wire rope 27.
  • the surface of the jointless wire rope 13 and the creeping wire rope 27 can be tested by simulating the actual lifting conditions by spraying water or applying grease.
  • the lower pad bracket 20 can be rotated at any angle within the circular groove 21 on the base 01 and then fixed, so that the angle of the cross contact between the wires can be adjusted, and the measured data is more comprehensive.
  • the eccentric disk 23 on the cam motor is machined with a plurality of threaded holes at different distances from the center of the circle to meet the requirements of different creep amplitudes of the creeping wire rope.

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Abstract

L'invention concerne un procédé et un appareil de détection complète de frottement de garniture de frottement et de câble en acier pour un treuil. L'appareil comprend un cadre de base et un système de frottement par glissement à vitesse élevée en continu d'un câble en acier dû à un contact transversal avec le câble en acier, un système d'usure par frottement due au patinage continu du câble en acier et à un contact transversal avec le câble en acier et un système de frottement par glissement à vitesse élevée en continu d'un câble en acier et d'une garniture de frottement, qui sont disposés sur une base (01) du cadre de base. La présente invention permet de réaliser de manière fonctionnelle la détection des caractéristiques des frottements entre des câbles en acier d'un treuil du type à enroulement et des caractéristiques de frottement par glissement à vitesse élevée entre les câbles en acier et les garnitures de frottement dans le treuil du type à frottement, et trois comportements de frottement tels qu'un frottement par glissement à vitesse élevée d'un câble en acier dû à un contact transversal avec le câble en acier, une usure par frottement due au patinage et à un contact transversal et un frottement par glissement à vitesse élevée de la garniture de frottement et du câble en acier, peuvent être simulés.
PCT/CN2015/099149 2015-03-10 2015-12-28 Procédé et appareil de détection complète de frottement de garniture de frottement et de câble en acier pour un treuil Ceased WO2016141761A1 (fr)

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AU2015385477A AU2015385477B2 (en) 2015-03-10 2015-12-28 Comprehensive steel wire rope and friction liner friction detection apparatus and method for hoist

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