CN110736673A - multi-wire spiral contact testing device and method in hoisting steel wire rope - Google Patents

multi-wire spiral contact testing device and method in hoisting steel wire rope Download PDF

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Publication number
CN110736673A
CN110736673A CN201911088165.8A CN201911088165A CN110736673A CN 110736673 A CN110736673 A CN 110736673A CN 201911088165 A CN201911088165 A CN 201911088165A CN 110736673 A CN110736673 A CN 110736673A
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CN
China
Prior art keywords
steel wire
wire rope
steel
disc
sliding
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Pending
Application number
CN201911088165.8A
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Chinese (zh)
Inventor
彭玉兴
黄坤
朱真才
卢昊
曹国华
周公博
沈刚
徐春明
王方方
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Priority to CN201911088165.8A priority Critical patent/CN110736673A/en
Publication of CN110736673A publication Critical patent/CN110736673A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/56Investigating resistance to wear or abrasion
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details
    • G01N3/04Chucks
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/32Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
    • G01N3/38Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by electromagnetic means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0001Type of application of the stress
    • G01N2203/0005Repeated or cyclic
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0026Combination of several types of applied forces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003Generation of the force
    • G01N2203/005Electromagnetic means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/026Specifications of the specimen
    • G01N2203/0262Shape of the specimen
    • G01N2203/0278Thin specimens
    • G01N2203/028One dimensional, e.g. filaments, wires, ropes or cables
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/04Chucks, fixtures, jaws, holders or anvils
    • G01N2203/0423Chucks, fixtures, jaws, holders or anvils using screws
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/06Indicating or recording means; Sensing means
    • G01N2203/067Parameter measured for estimating the property
    • G01N2203/0676Force, weight, load, energy, speed or acceleration
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/06Indicating or recording means; Sensing means
    • G01N2203/067Parameter measured for estimating the property
    • G01N2203/0682Spatial dimension, e.g. length, area, angle

Abstract

The invention discloses a device and a method for testing the internal multi-wire spiral contact of a hoisting steel wire rope, wherein the device comprises a workbench, a steel wire rope internal multi-wire spiral contact mechanism arranged on the workbench, a steel wire rope internal multi-wire loading mechanism and a roller loading mechanism.

Description

multi-wire spiral contact testing device and method in hoisting steel wire rope
Technical Field
The invention relates to a contact testing device and method for a multi-wire spiral in hoisting steel wire ropes.
Background
The steel wire rope is a flexible lifting structure which is twisted into a rope by wires at constant twisting angle and then twisted into a rope by strands and has a three-dimensional spiral space structure, and the flexible lifting structure can transfer long-distance load, has the advantages of large bearing capacity, good flexibility, stable movement, no noise, capability of bearing larger axial load and smaller bending and torsional rigidity, so the flexible lifting structure is widely applied to various practical engineering applications such as cranes, elevators, mine hoists and the like by .
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides types of testing devices for testing the multi-wire spiral contact inside a hoisting steel wire rope, which can realize the working condition of the multi-wire spiral contact inside the steel wire rope on experimental devices and truly simulate two motion behaviors of friction and abrasion between steel wires inside the steel wire rope and between steel layers.
The technical scheme is as follows: in order to achieve the technical purpose, the invention adopts the following technical scheme:
kinds of hoisting steel wire rope internal multi-wire spiral contact testing devices comprise a workbench and a steel wire rope strand to be tested arranged on the upper part of the workbench, wherein the end of the steel wire rope strand to be tested is fixedly connected with a rope clamping device arranged at the end of the workbench in a clamping manner, and the other end is horizontally suspended along the length direction of the workbench;
the central steel wire pulling and twisting mechanism is used for performing torsion and tension tests on the central steel wire in the steel wire rope strands, wherein the end of the central steel wire is connected with the torsion mechanism, and the end of the central steel wire is connected with the central steel wire tension loading mechanism, and the central steel wire pulling and twisting mechanism further comprises:
at least sets of wire spiral contact mechanisms for performing spiral contact test on at least layers of steel wires wound outside the central steel wire, wherein the sets of wire spiral contact mechanisms are sequentially arranged on the workbench along the axial direction of the steel wire strands and have the same structure, and each set of wire spiral contact mechanism comprises:
the twisting block is sleeved outside the steel wire rope strand, and an inner hole of the twisting block has a shape which is suitable for the outer contour of the steel wire rope strand;
the rotating disc is fixedly sleeved with the twisting block and used for driving the twisting block and the outer steel wire of the central steel wire to rotate around the axis direction of the steel wire rope strand;
the dispersion mechanism is arranged on the side surface of the rotating disc and used for dispersing a plurality of layers of steel wires wound outside the center steel wire, and comprises a plurality of pulley supporting units, a plurality of pulley supporting units and a plurality of steel wire rope clamping mechanisms, wherein the pulley supporting units are arranged on the side surface of the rotating disc and are uniformly arranged along the circumferential direction of the disc surface of the rotating disc, pulleys are respectively arranged at the top of each pulley supporting unit, the pulleys are positioned on different rotating planes, layers of steel wire groups on steel wire rope strands are dispersed and then fixedly connected with steel wire rope clamps by respectively bypassing pulleys, and after the rotating disc rotates, layers of steel wires can realize multi-wire spiral contact;
straining device for adjust the tensile force of many steel wires after the dispersion, include:
the end of each lever is fixedly connected with steel wire rope clamps through a pull sensor and a pressure sensor, the other end of each lever extends towards the direction of sliding discs, and through holes are respectively formed in the sliding discs corresponding to each lever;
the polygonal cylindrical frame is provided with a plurality of rectangular surfaces, sliding rods extending along the axial direction of the polygonal cylindrical frame are arranged on each rectangular surface, a lever support is connected on each sliding rod in a sliding manner, the top end of each lever support is connected with the lever support through a hinge point, and the bottom of each lever support is locked and fixed with the corresponding sliding rod through a locking screw;
the push disc is arranged on the other side of the sliding disc in parallel and is connected with the sliding disc through a two-link mechanism, a plurality of sliding grooves which are uniformly distributed along the radial direction of the sliding disc are arranged on the disc surface of the sliding disc corresponding to each lever, and the two-link mechanism can be in transmission connection with the other end of the lever after penetrating through the sliding grooves;
and the second electric cylinder is in driving connection with the push disc and is used for driving the push disc to move in parallel to the direction of the sliding disc, when the second electric cylinder drives the push disc to apply pressure to the sliding disc, a plurality of two-link mechanisms move to the center of the sliding disc at the same speed in a sliding groove of the sliding disc, so that the end parts of a plurality of levers are pushed, force is transmitted to another ends of the levers through the action of lever fulcrums, and finally, the steel wire rope clamps are used for tensioning the steel wires.
The torsion mechanism comprises a second steel wire rope clamp connected with an end of the central steel wire in a clamping manner, a th torsion sensor, a th coupler and a th stepping motor which are connected to the second steel wire rope clamp and are connected in series along the axial direction of the central steel wire, the th stepping motor is a double-output-shaft stepping motor, the end of the double-output-shaft th stepping motor is connected with a rotary encoder through the coupler, the rotary encoder feeds back the rotated angle of the central steel wire, the other end of the double-output-shaft th stepping motor is connected with the torque sensor through the coupler, and the th stepping motor is fixed on an upright post of the workbench;
the central steel wire tension loading mechanism comprises a third steel wire rope clamp, a tension sensor, a pressure sensor and a electric cylinder, wherein the third steel wire rope clamp is connected with the other end of the central steel wire in a clamping manner, and the tension sensor, the pressure sensor and the electric cylinder are connected to the third steel wire rope clamp and are connected in series along the axial direction of the central steel wire.
The rotary driving mechanism comprises a second stepping motor, a driving gear, a driven gear, a coupler, a bearing seat and an L-shaped plate, wherein an output shaft of the second stepping motor is in transmission connection with the driving gear through the coupler and a transmission shaft in sequence, and the driving gear is meshed with the driven gear;
a dovetail groove used for embedding the torsion block and a bearing mounting hole which is positioned at the rear part of the dovetail groove and used for mounting a bearing are arranged at the axis of the driven gear, the outer ring of the bearing is mounted in the bearing mounting hole, the inner ring of the bearing is connected with short shafts through a key, the other end of each short shaft is fixedly connected with the upper end of the L-shaped plate, and a through hole through which a plurality of steel wires pass without hindrance is formed in the middle of each short shaft;
a plurality of pulley supporting units are fixedly connected to the end face of the driven gear at the side of , and pulleys are connected to the tops of the pulley supporting units.
The disc surface of the sliding disc is provided with a rectangular sliding groove, the second section of the two connecting rod mechanisms is inserted into the corresponding rectangular sliding groove and slides in the rectangular sliding groove, the length of the second section of the two connecting rods is longer than that of the rectangular sliding groove, the second section of the two connecting rods is pushed out of the rectangular sliding groove and then contacts with the end of the lever, force is transmitted to the lever part, different loads applied by the steel wires are adjusted by adjusting the fulcrum of each lever, and therefore different loads applied to the steel wires in the steel wire rope strand under actual working conditions are simulated.
The device also comprises a roller loading mechanism for simulating the friction wear generated by winding the steel wire rope strands on the roller in actual production, and the device comprises:
roller body, set up in end of the said work level, the roller body has arc surface contacting with strand of said steel wire to be measured, the left, right both ends of the roller body pass roller semi-axis, and slide block and U-shaped frame slip connection separately, there are vertical concrete chutes for the guide movement of the said slide block on both sides inboard wall of the said U-shaped frame, the bottom of the U-shaped frame connects with the third electronic cylinder fixedly, the third electronic cylinder is used for driving the said roller body to move up and down and back and forth along the vertical concrete chute of the U-shaped frame;
the two brackets are symmetrically arranged on the workbench by taking a measured steel wire rope strand as a center line, the ends at the tops of the two brackets are hinged with the ends of long cantilevers respectively towards the extension direction of the steel wire rope strand, a long bottom plate is connected between the suspended ends of the two long cantilevers, and the rope clamping device is installed and fixed on the long bottom plate;
electric push rods are arranged between the support and the middle part of the long cantilever at the side of of the bottom of each support, and when the electric push rods do telescopic motion, the suspended end of the long cantilever moves along an arc track.
The roller body is hollow, and an arc-shaped rope groove is processed on the arc-shaped surface of the roller body, which is in contact with the steel wire rope strand to be tested.
The outer walls of two sides of the U-shaped frame are respectively fixedly connected with roller half shafts, wherein ends of roller half shafts are connected with the bearing support, and roller half shafts are connected with the steering engine;
and a vertical vibration exciter is arranged at the bottom side of the U-shaped frame, and an output shaft of the vertical vibration exciter is connected with any roller half shaft at the left side and the right side of the roller main body through a dowel bar so as to simulate the micro motion between the roller main body and a steel wire rope strand when the steel wire rope strand is wound on the roller main body under the actual working condition.
The device also comprises a steel wire rope strand radial force loading mechanism for loading the steel wire rope strand with radial force, and the device comprises:
the bidirectional ball screw moving pair is fixed on the upper part of the workbench and comprises a bidirectional ball screw, an th moving pair and a second moving pair which are arranged on the bidirectional ball screw, wherein the th moving pair and the second moving pair move oppositely, a th clamping arm is connected to the th moving pair, a second clamping arm is connected to the second moving pair, and the th clamping arm and the second clamping arm are symmetrically arranged along the center of the steel wire rope strand;
the tail end of the clamping arm and the tail end of the second clamping arm are respectively provided with a semi-arc pressing groove, and the two semi-arc pressing grooves press and clamp the steel wire rope strand.
The th clamping arm and the second clamping arm are identical in structure and respectively comprise a front clamping arm, a rear clamping arm and a pulling and pressure sensor connected between the front clamping arm and the rear clamping arm, wherein the front clamping arm is fixedly connected with the sliding pair, and the tail end of the rear clamping arm is provided with the semi-arc-shaped pressing groove.
The invention further discloses test steps of steel wire rope strands based on the multi-wire spiral contact testing device in the hoisting steel wire rope, wherein the steel wire rope strands comprise three layers, namely a center steel wire, a second layer of 6 steel wire groups coated outside the center steel wire and a third layer of 12 steel wire groups coated outside the second layer of 6 steel wire groups, correspondingly, the steel wire spiral contact mechanisms comprise two groups, namely a spiral contact mechanism of the second layer of steel wire and a spiral contact structure of the third layer of steel wire, and the test steps comprise the following steps:
(1) fixing the end of the central steel wire on a third steel wire rope clamp connected with the electric cylinder, and fixing the end of the central steel wire on a second steel wire rope clamp at the stepping motor end after penetrating through a rope clamping device, a large L-shaped plate II, a twelve-wire twisting block central hole, a dodecagon frame, a L-shaped plate, a six-wire twisting block central hole and a hexagon frame;
(2) step motor works to twist the central steel wire;
(3) the second layer of steel wires and the third layer of steel wires are mutually and closely attached to each other according to the sequence of the inner layer and the outer layer and pass through the central hole of the rope clamping device, and pre-tensioning is carried out, so that the two layers of steel wires are fixed by ends and do not slide;
(4) the six steel wires on the second layer are annularly arranged around the central steel wire, and sequentially pass through the second middle hole of the large L-shaped plate, the central hole of the twelve-wire twisting block, the interior of the dodecagon frame, the middle hole of the L-shaped plate and the central hole of the six-wire twisting block from the rope clamping device, and are finally clamped and fixed by corresponding steel wire clamps;
(5) arranging twelve steel wires on the third layer annularly around the steel wires on the second layer, sequentially passing through the second middle hole of the large L plate and the central hole of the twelve-wire twisting block from the rope clamping device, and finally clamping and fixing by corresponding steel wire clamps;
(6) the second step motor acts to twist the second layer of six steel wires, and then the second electric cylinder acts to press down the push disc so as to tension the second layer of six steel wires;
(7) thirdly, the motor is driven to act, the third layer of steel wires are twisted, and then the second electric cylinder acts to press down the second push disc so as to tension the third layer of steel wires;
so far, the total of nineteen wires are completely loaded in three layers.
Has the advantages that:
the invention can simulate the contact state of the multi-wire spiral inside the steel wire rope and can research the friction behavior inside the steel wire rope on the basis, and the main advantages are that.
, the contact state of multiple threads inside the steel wire rope is truly simulated, and the friction behavior of the multiple threads inside the steel wire rope can be tested and researched.
And secondly, a double-layer or three-layer spiral contact structure in the steel wire rope can be simulated, and the steel wire rope strands are subjected to radial force loading on the basis of the spiral contact structure, so that friction behavior test research is performed.
And thirdly, simulating the state of the steel wire rope strand wound on the roller, and researching the friction behavior of a plurality of layers of steel wires in the steel wire rope in the state.
Fourthly, the structure is simple, and the function is reliable.
Drawings
FIG. 1 is a front view of the inventive structure;
the device comprises a workbench table, a rotary encoder, a stepping motor, a stepping motor, a stepping motor, a stepping motor, stepping motor;
FIG. 2 is a front view of a six-wire spiral contact and loading mechanism;
48, six pulley blocks, 49, a workbench symmetrical upright post, 50, a lever, 66, a vibration exciter, 68 and electric cylinders;
FIG. 3 is a front view of the drum self-transferring and ejecting structure;
wherein, (51, 54), the roller half shaft; 52. a U-shaped frame; 53. a vertical chute; 55. a slider; 56. a steering engine; 57. a third electric cylinder; 58. an electric cylinder push plate; 67. a dowel bar;
FIG. 4 is a schematic view of the rotation of a long cantilever arm in the roller loading mechanism;
59, a bracket; 60. an electric push rod base;
FIG. 5 is a schematic view of a connection structure of a wire strand and a twisting block when the wire strand is a two-layer wire according to the present invention;
wherein, 61, six wire twisting blocks; 62. a second layer of steel wires; 63. a central steel wire;
FIG. 6 is a schematic view of a connection structure of a wire strand and a twisting block when the wire strand is a three-layer wire according to the present invention;
wherein, 64 and twelve twisting blocks; 65. a third layer of steel wires;
FIG. 7 is an isometric view of the lever set configuration;
wherein, 15A, the th plate, 15B, the second plate and 15C, the third plate;
FIG. 8 is a partial block diagram of the torsion mechanism of the present invention attached to the end of a center wire ;
69, a stepping motor outer frame; 7A, a splint; 7B, a concave clamp assembly; 7C, a male clamp assembly;
FIG. 9 is a schematic view of a multi-filament spiral contact structure of the present invention;
wherein, 36A, a twelve pulley block base , 36B, a twelve pulley block base II, 70, a third wire rope clamp;
FIG. 10 is a schematic view of a tensioning mechanism drive configuration;
73, a long connecting rod;
FIG. 11 is a schematic structural view of a roller loading mechanism;
the device comprises a rope clamping device, a first long cantilever, a second long cantilever, a first electric push rod, a second electric push rod, a third electric push rod, a fourth long cantilever, a fifth cantilever, a sixth electric push rod, a fifth electric push rod;
FIG. 12 is a schematic view of a connection structure between a driven gear and a torsion block in the rotary driving mechanism according to the present invention;
FIG. 13 is a schematic structural view of a radial force loading mechanism for a wire strand according to the present invention;
the clamping device comprises a lifting ring 28A, a left shell 28B, a right shell 28C, a handle 28D, a clamping wedge 28E, a stepping motor 25A, a flange plate 25B, a clamping arm 25C1, a clamping arm 25C2, a clamping arm 25D, a bidirectional ball screw 25F1, a clamping arm 25F2 and a clamping arm unit.
Detailed Description
The present invention will be described in detail with reference to specific examples.
Referring to fig. 1 to 8, the device for testing the internal multi-wire spiral contact of the hoisting steel wire rope comprises a workbench, an internal multi-wire spiral contact mechanism of the steel wire rope, an internal multi-wire loading mechanism of the steel wire rope and a roller loading mechanism, wherein the internal multi-wire spiral contact mechanism of the steel wire rope, the internal multi-wire loading mechanism of the steel wire rope and the roller loading mechanism are arranged;
the workbench comprises four section upright posts 47, two cross beams 46 welded between the section upright posts, a workbench table surface 1 supported by the four upright posts, upright posts 48 symmetrically welded on the workbench, two upright posts welded on the side of the workbench , and rectangular holes for preventing interference on the workbench.
In this embodiment, the central steel wire pulling and twisting mechanism is used for performing torsion and tension tests on a central steel wire in a steel wire strand, the end of the central steel wire is connected with the twisting mechanism, and the end of the central steel wire is connected with the central steel wire tension loading mechanism, wherein the twisting mechanism includes a second steel wire rope clamp 7 connected with the end of the central steel wire 63 in a clamping manner, and a torsion sensor 5, a coupler and a stepping motor 3 which are connected to the second steel wire rope clamp 7 and are connected in series along the axial direction of the central steel wire, the stepping motor 3 is a double-output-shaft stepping motor, output ends of the stepping motor of the double-output-shaft are connected with a rotary encoder through couplers, and the rotary encoder feeds back the rotated angle of the central steel wire;
the other output ends of the th stepping motor 3 with double output shafts are connected with a torque sensor 5 through a coupler, and the th stepping motor is fixed on the upright post of the workbench.
The central steel wire tension loading mechanism comprises a third steel wire rope clamp 70 connected with the other end of the central steel wire in a clamping manner, a tension sensor, a pressure sensor and a electric cylinder 29 which are connected to the third steel wire rope clamp 70 and are connected in series along the axial direction of the central steel wire.
In this embodiment, the th electric cylinder 29 is the th electric cylinder, and can simulate the micro-motion load of the steel wire under the actual working condition.
In the embodiment, the wire rope strand comprises three layers, namely a center wire, a second layer 6 of wire groups coated outside the center wire and a third layer 12 of wire groups coated outside the second layer 6 of wire groups, correspondingly, the wire spiral contact mechanism comprises two groups, namely a spiral contact mechanism of the second layer of wire and a spiral contact structure of the third layer of wire, wherein the spiral contact mechanism of the second layer of wire comprises a second stepping motor 44, a driving gear , a driven gear , a second circle of six wires, a second L-shaped plate 41, a small L-shaped plate , a transmission shaft 49, a rolling bearing , a six wire twisting block 61, a rope clamping device 28, a sixth pulley block 51, a sixth pulley base 52, a wire clamp 15, two small rollers and a sliding disc 510, an output shaft of the second stepping motor 44 is connected with the transmission shaft 49 through a coupling, the transmission shaft is connected with the driving gear through a flat key, the driving gear 72 is meshed with the driven gear , the six wire block 61 is connected with the driving gear base 52 through a dovetail groove, the middle gear clamp 15, the middle gear clamp 61, the middle gear clamp is used as a middle gear clamp, the middle gear clamp used for connecting the driving gear clamp 72 with the driving gear clamp 72, the driving gear clamp for connecting the driving gear clamp 72, the driving gear clamp 366L-driven gear clamp 72, the driving gear clamp for connecting the driving gear clamp 366L-shaped plate , the driving gear clamp, the driving gear clamp for driving the driving gear clamp, the driving gear clamp for driving gear clamp, the driving gear clamp for driving the driving gear clamp 72, the driving gear clamp for driving the driving gear clamp for driving the driving gear clamp, the driving wire 72, the driving gear clamp for driving gear clamp, the driving wire 72, the driving wire, the driving wire, the driving wire 72, the driving wire clamp for driving wire, the driving wire clamp for driving wire, the driving wire clamp for.
The loading mechanism in the spiral contact mechanism of the second layer of steel wires comprises a hexagonal frame 13, a lever 50, a lever fulcrum 11, a sliding bottom rod 12, two connecting rods 9, a sliding disc 10, a pushing disc 8, a second electric cylinder 4, an electric cylinder push rod 6 and an electric cylinder bottom plate 66, wherein six pulleys 48 are fixed on a six-pulley chassis 36 through screws, the six-pulley chassis 36 is fixedly connected with a driven gear 16 through screws, the six pulley blocks 48 and the six-pulley chassis 36 serve as dispersing devices of the second layer of steel wires 62, and the six steel wires of the second layer are clamped and fixed through corresponding steel wire clamps after being dispersed;
the third link is characterized in that a fourth link is fixedly connected with ends of levers through screws, the levers 19 are supported by lever fulcrums 11, the lever fulcrums 11 are buckled on sliding bottom rods 12, the lever fulcrums 11 can move along the sliding bottom rods 12 to change the length of an arm of force, the sliding bottom rods 12 are fixed on a hexagonal frame 13 through bolts, locking screws are arranged on the lever fulcrums 11, the lever fulcrums 11 can be locked and stopped at any position of the sliding bottom rods 12, namely six lever groups are erected on the hexagonal frame 13, the hexagonal frame 13 is fixedly connected with a sliding disc 010 through a plurality of screws, the lower end of the sliding disc is supported by two small rollers 36245, two small rollers are fixed on a workbench table surface 1 through studs, the ends of three long links are welded on the end face of a driven gear , the other end is welded on the bottom of the sliding disc to play a role in fixing the functions, the ends, the six link rope strands 9 are fixedly connected with a pushing disc , the pushing disc, the other link 6865 end of the six link is fixedly connected with a pushing disc , the pushing disc, the pushing cylinder platen 95, the sliding disc is pressed by a sliding cylinder platen 35 through a sliding cylinder, the sliding disc 94, the sliding disc 596, the sliding disc is pressed by a sliding cylinder platen 35, the sliding cylinder platen 35, the sliding disc, the sliding bottom plate, the sliding cylinder platen 35, the sliding bottom plate is pressed by the sliding cylinder platen 35, the sliding cylinder platen 35, the sliding platen 35 is pressed by the sliding platen 35, the sliding platen 35, the sliding platen, the sliding.
The spiral contact mechanism of the third layer of steel wires is the same as the spiral contact mechanism of the second layer of steel wires in structure, and the detailed description is omitted.
Preferably, as a step of feeding in the technical solution of the present invention, the present embodiment further includes a drum loading mechanism for simulating frictional wear generated when a steel wire rope is wound on a drum in actual production, the drum loading mechanism includes two electric push rods 27, a bracket 59, a long cantilever 26, a rope clamp 28, a bearing seat 32, a steering engine 56, a drum body 31, two drum half shafts 54, two drum half shafts 51, a U-shaped frame 52, a third electric cylinder 57, two sliders 55, an exciter 66, a second electric cylinder accessory push plate 58, and a long bottom plate 30, the four brackets 59 are fixed on the table top 1 by bolts in pairs and are symmetrically arranged with the measured steel wire rope as a center line, two adjacent brackets 59 are connected and fixed with electric push rod bases 60 at the sides, the bottoms of the two electric push rods 27 are connected with the electric push rod bases 60, the extending ends of the electric push rods 27 are connected with the middle of the long cantilever 26 by a bolt, when the electric push rods 27 do telescopic motion, the top ends of the long cantilever 26 move along an arc trajectory, the rope clamp 28 is fixed on the long bottom plate 30, the long bottom plate 30 is connected with the long cantilever 26, the long bottom plate 30, the drum body can be connected with the drum body by a steel wire rope clamp 52, the drum loading mechanism can be fixed with the drum body 31 by an external side of the drum 52 by a vertical push rod 52 by a sliding chute 52, the pulley 52, the electric cylinder, the pulley 52, the pulley 31 is connected with the drum vertical push rod bases of the drum by two vertical push rod bases of the electric cylinder, the pulley 52 is connected with the pulley 52 by two pulley 52, the pulley 52;
the th stepping motor 3 is installed on the outer frame of the motor, the outer frame of the motor is fixedly connected with the upright post of the worktable 1 through the stud, meanwhile, the encoder 2 is fixedly connected with the top of the motor bed frame, and the end of the th stepping motor 3 is connected with the encoder 2, so as to measure the twisted angle of the center steel wire;
each steel wire is connected with corresponding drawing when being clamped by the clamp, pressure sensor, the drawing of center steel wire, pressure sensor 71 end is connected with third wire rope clamp 70, end is connected with electric cylinder 29 in addition, the drawing of second floor steel wire 61 and third layer steel wire 65, pressure sensor end is connected with lever 50 end, end is connected with the anchor clamps that each steel wire corresponds in addition, nineteen steel wires are all furnished with corresponding drawing, pressure sensor totally, when the steel wire is exerted load, each drawing, pressure sensor can all feed back the pulling force value that each steel wire received in real time, can all can obtain the state of monitoring each steel wire.
The leading-out ends of the second layer of steel wires 61 and the third layer of steel wires 65 are provided with pulleys, each steel wire is conveniently clamped by a steel wire clamp after being led out by the pulleys, and in addition, the load applied to each steel wire can be transmitted downwards almost without loss due to the arrangement of the pulleys;
the end of the center wire 63 is applied with micro load by the electric cylinder 29, the electric cylinder 29 can do reciprocating vibration in millimeter level, and the requirement for the electric cylinder is high because the required vibration frequency is high and the amplitude is small.
The vibration exciter 66 is fixed at the bottom of the inner side of the U-shaped frame 52 through a bolt, an output shaft of the vibration exciter 66 is connected with the roller half shaft 54 through a dowel 67, a steel wire rope strand is surrounded on the roller main body 31, the vibration exciter 66 excites the roller main body 31 so as to simulate the micro motion between a steel wire rope wound on the roller and the steel wire rope under the actual working condition, and therefore the friction and wear states among the wires in the steel wire rope are simulated more truly after the micro motion is generated between the steel wire rope and the roller when the steel wire rope is wound on the roller;
rectangular holes and sliding grooves are formed in the upper surfaces of the sliding disc 10 and the second sliding disc 39, the second section of the two connecting rods 9 is inserted into the corresponding rectangular holes and slides in the sliding grooves, the second section of the two connecting rods is designed to be longer than the rectangular through holes, when the second section of the two connecting rods is pushed out of the rectangular holes, the second section of the two connecting rods is in contact with the end of the lever 50, force is transmitted to the lever 50 part, and due to the fact that the sliding discs 10 and 39 and the connecting rods 9 are symmetrically arranged, the pushing force can be evenly distributed to all steel wires, different loads applied to all the steel wires can be adjusted by adjusting the lever supporting points 11, and therefore different loads applied to all the steel wires in the steel wire rope under the actual working condition can be simulated;
except the second steel wire rope clamp 7, the other clamps for clamping the steel wire are all composed of three plates, wherein the largest plate is an L-shaped plate 15A, a counter bore is processed in the middle, a counter screw is connected with the L-shaped plate 15A and the pull and pressure sensor 14, the second plate 15B plays a role in centering the steel wire, the steel wire is clamped between the second plate 15B and the third plate 15C, the center of the steel wire is aligned to the center of the counter bore, so that data collected by the pull and pressure sensor 14 are more accurate, the three plates are fixed through four bolts, and the steel wire to be measured is clamped between the second plate 15B and the third plate 15C;
as preferred embodiments of the technical scheme of the invention, the second wire rope clamp 7 consists of three parts, including a male clamp assembly 7C, a female clamp assembly 7B and a clamping plate 7C, wherein the end of the male clamp assembly 7C is connected with the torque sensor 5, the other end is connected with the female clamp assembly 7B, the surface of the female clamp assembly 7B is provided with a square groove for embedding the male clamp assembly 7C, the side surfaces of the male clamp assembly 7C and the female clamp assembly 7B are both provided with through holes, after the male clamp assembly 7C is embedded in the female clamp assembly 7B, the male clamp assembly 7C and the female clamp assembly 7B are connected and fastened through bolts, and the clamping plate 7A and the female clamp assembly 7B clamp the central wire 63 and fasten the central wire through bolts.
Two inverted L-shaped upright posts 24 are welded at the front end of the workbench, two ends of the bearing plate are fixedly connected with the two inverted L-shaped upright posts 24 through bolts, a bidirectional ball screw moving pair 25 is fixed on the lower surface of the bearing plate through bolts, two sliders of the bidirectional ball screw moving pair 25 are fixed with a linear sliding table accessory structure through screws, the two sliders of the bidirectional ball screw moving pair 25 move oppositely to enable the two linear sliding table accessory structures to move oppositely, a semi-arc-shaped pressing groove is formed in the inner side of the linear sliding table accessory structure, the diameter of the semi-arc-shaped pressing groove is slightly smaller than that of a measured steel wire rope strand, when the bidirectional ball screw moving pair 25 works, the two linear sliding table accessory structures move relatively, the two semi-arc-shaped pressing grooves compress the steel wire rope strand in the middle, the structure models acting force between the steel wire rope strand and the rope strand, the pressing groove applies load to the steel wire to simulate acting force applied by the rest of the steel wire strand, a pulling sensor and a pressure sensor is connected to the linear sliding table accessory structure, four pressure sensors are arranged, the two sides are arranged, the structure can measure the pressure of the structure to the steel wire strand.
In the invention, the width and the diameter of the roller main body 31 are designed to be smaller, and the roller main body is designed to be semicircular so as to save materials and space, the interior of the roller main body is hollow so as to achieve the purpose of reducing weight, the semicircular surface of the roller main body 31 is provided with an arc-shaped rope groove, and a steel wire rope is surrounded along the rope groove so as to simulate the state that the steel wire rope is clamped in the rope groove when being wound on the roller;
the steel wire rope clamp comprises three plates, namely a th plate, a second plate and a third plate, wherein the th plate is an L-shaped plate, a counter bore is formed in the middle of the L-shaped plate, a countersunk screw is connected with the L-shaped plate, the pull and pressure sensor is connected with the L-shaped plate, the second plate plays a centering role of a steel wire, the steel wire is clamped between the second plate and the third plate, the center of the steel wire is aligned to the center of the counter bore, and the three plates are fixed through bolts.
The second steel wire rope clamp and the third steel wire rope clamp are identical in structure and respectively comprise a convex clamp component, a concave clamp component and a clamping plate, wherein the end of the convex clamp component is connected with the torque sensor, the end of the convex clamp component is connected with the concave clamp component, a square groove used for being embedded into the convex clamp component is formed in the surface of the concave clamp component, through holes are formed in the side faces of the convex clamp component and the concave clamp component, after the convex clamp component is embedded into the concave clamp component, the convex clamp component and the concave clamp component are connected and fastened through bolts, and the center steel wire clamp is clamped between the clamping plate and the concave clamp component.
The test steps of the device for testing the internal multi-filament spiral contact of the hoisting steel wire rope are as follows:
(1) fixing the end of a center steel wire 63 on a third steel wire rope clamp 70 connected with a electric cylinder 29, and fixing the other end of on a second steel wire rope clamp 7 at the end of stepping motor 3 after passing through a rope clamping device 28, a large L plate two 33, a twelve-wire twisting block 64 center hole, a dodecagon frame 19, a L-shaped plate 41, a six-wire twisting block (61) center hole and a hexagon frame (13);
(2) , the stepping motor 3 works to twist the central steel wire 63;
(3) the second layer 61 and the third layer 65 of steel wires are closely attached to each other in the sequence of inner layer and outer layer and pass through the central hole of the rope clamping device 28, and pre-tensioning is carried out, so that the two layers of steel wires are fixed by ends and do not slide;
(4) the six steel wires 61 on the second layer are circularly arranged around the central steel wire 63, sequentially pass through the middle holes of the second large L-shaped plate 33, the central hole of the twelve-wire twisting block 64, the interior of the dodecagon frame 19, the middle hole of the -th L-shaped plate 42 and the central hole of the six-wire twisting block 61 from the rope clamping device 28, and are finally clamped and fixed by corresponding steel wire clamps;
(5) the twelve steel wires 65 on the third layer are circularly arranged around the steel wires 61 on the second layer, sequentially pass through the middle holes of the second large L plate 33 and the central holes of the twelve twisting blocks 64 from the rope clamping device 28, and are finally clamped and fixed by corresponding steel wire clamps;
(6) the second stepping motor 44 is operated to twist the second layer steel wire 61, and then the second electric cylinder 4 is operated to press down the push disc 8, thereby tensioning the second layer steel wire 61;
(7) the third step motor 38 acts to twist the third layer of steel wires 65, and then the second electric cylinder 68 acts to press down the second push disc 18, so that the third layer of steel wires 65 are tensioned;
so far, nineteen wires are completely loaded in three layers, wherein two testing methods comprise a friction wear test in a stretched state A and a friction wear test in a state that a steel wire rope strand is surrounded on a roller, wherein the friction wear test in the stretched state comprises the following substeps:
a1, adjusting each lever fulcrum 11, and changing the tension of each steel wire;
a2 and a electric cylinder 29 act to drive the central steel wire 63 to slightly move;
a3, the bidirectional ball screw moving pair 25 acts to clamp the twisted steel wire rope strands and apply radial force to the twisted steel wire rope strands;
if the test of the wire strand loaded on the roller body 31 is required, the following substeps are passed;
b1, adjusting each lever fulcrum 11, and changing the tension of each steel wire;
b2 and the third electric cylinder 57 act, the roller body 31 slides upwards along the vertical sliding groove 53 and contacts with the steel wire rope strands, and the steel wire rope strands are embedded into the arc-shaped rope groove of the roller body 31;
b3, the steering engine 56 works to rotate the U-shaped frame 52 around the rotating shaft 51 for for a fixed angle;
b4, the two electric push rods 27 act to wrap the horizontally stretched steel wire rope strands along the roller main body 31, and the rotation angle is maximum 90 degrees;
b5 and the electric cylinder 29 act to drive the central steel wire 63 to slightly move;
b6, operating the vibration exciter 66 to generate high-frequency vibration between the roller body 31 and the steel wire strand;
the actual tension of each steel wire can be measured by the tension and pressure sensors at the joints of the steel wires, the rotating angle of the central steel wire 63 can be measured by the encoder 2 at the th stepping motor 3, and the torque of the central steel wire 63 can be measured by the torque sensor 5.
In the invention, the electric cylinder 29 provides adjustable vibration frequency, which meets the requirements of the center steel wire 63 on different vibration frequencies, and the adjustable thrust of the electric cylinder can provide adjustable tension for multiple steel wires in the steel wire rope.
It will be understood that modifications and variations can be resorted to by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the invention as defined by the appended claims.

Claims (10)

  1. The device for testing the multi-wire spiral contact in the hoisting steel wire ropes of 1 and comprises a workbench and steel wire rope strands to be tested, wherein the steel wire rope strands to be tested are arranged on the upper part of the workbench, the ends of the steel wire rope strands to be tested are fixedly connected with a rope clamping device arranged at the end of the workbench in a clamping manner, and the ends of the steel wire rope strands to be tested are horizontally suspended along the length direction of the workbench;
    the central steel wire pulling and twisting mechanism is used for performing torsion and tension tests on a central steel wire in a steel wire rope strand, wherein the end of the central steel wire is connected with the torsion mechanism, and the end of the central steel wire is connected with the central steel wire tension loading mechanism, and the central steel wire pulling and twisting mechanism is characterized by further comprising:
    at least sets of wire spiral contact mechanisms for performing spiral contact test on at least layers of steel wires wound outside the central steel wire, wherein the sets of wire spiral contact mechanisms are sequentially arranged on the workbench along the axial direction of the steel wire strands and have the same structure, and each set of wire spiral contact mechanism comprises:
    the twisting block is sleeved outside the steel wire rope strand, and an inner hole of the twisting block has a shape which is suitable for the outer contour of the steel wire rope strand;
    the rotating disc is fixedly sleeved with the twisting block and used for driving the twisting block and the outer steel wire of the central steel wire to rotate around the axis direction of the steel wire rope strand;
    the dispersion mechanism is arranged on the side surface of the rotating disc and used for dispersing a plurality of layers of steel wires wound outside the center steel wire, and comprises a plurality of pulley supporting units, a plurality of pulley supporting units and a plurality of steel wire rope clamping mechanisms, wherein the pulley supporting units are arranged on the side surface of the rotating disc and are uniformly arranged along the circumferential direction of the disc surface of the rotating disc, pulleys are respectively arranged at the top of each pulley supporting unit, the pulleys are positioned on different rotating planes, layers of steel wire groups on steel wire rope strands are dispersed and then fixedly connected with steel wire rope clamps by respectively bypassing pulleys, and after the rotating disc rotates, layers of steel wires can realize multi-wire spiral contact;
    straining device for adjust the tensile force of many steel wires after the dispersion, include:
    the end of each lever is fixedly connected with steel wire rope clamps through a pull sensor and a pressure sensor, the other end of each lever extends towards the direction of sliding discs, and through holes are respectively formed in the sliding discs corresponding to each lever;
    the polygonal cylindrical frame is provided with a plurality of rectangular surfaces, sliding rods extending along the axial direction of the polygonal cylindrical frame are arranged on each rectangular surface, a lever support is connected on each sliding rod in a sliding manner, the top end of each lever support is connected with the lever support through a hinge point, and the bottom of each lever support is locked and fixed with the corresponding sliding rod through a locking screw;
    the push disc is arranged on the other side of the sliding disc in parallel and is connected with the sliding disc through a two-link mechanism, a plurality of sliding grooves which are uniformly distributed along the radial direction of the sliding disc are arranged on the disc surface of the sliding disc corresponding to each lever, and the two-link mechanism can be in transmission connection with the other end of the lever after penetrating through the sliding grooves;
    and the second electric cylinder is in driving connection with the push disc and is used for driving the push disc to move in parallel to the direction of the sliding disc, when the second electric cylinder drives the push disc to apply pressure to the sliding disc, a plurality of two-link mechanisms move to the center of the sliding disc at the same speed in a sliding groove of the sliding disc, so that the end parts of a plurality of levers are pushed, force is transmitted to another ends of the levers through the action of lever fulcrums, and finally, the steel wire rope clamps are used for tensioning the steel wires.
  2. 2. The device for testing the contact of the multi-wire spiral in the hoisting steel wire rope according to claim 1, wherein the torsion mechanism comprises a second steel wire rope clamp connected with the end of the center steel wire in a clamping manner, a th torsion sensor, a th coupler and a th stepping motor which are connected to the second steel wire rope clamp and axially connected in series along the center steel wire, the th stepping motor is a double-output-shaft stepping motor, the end of the double-output-shaft th stepping motor is connected with a rotary encoder through the coupler, the rotary encoder feeds back the rotated angle of the center steel wire, the other end of the double-output-shaft th stepping motor is connected with the torque sensor through the coupler, and the th stepping motor is fixed on the upright post of the workbench;
    the central steel wire tension loading mechanism comprises a third steel wire rope clamp, a tension sensor, a pressure sensor and a electric cylinder, wherein the third steel wire rope clamp is connected with the other end of the central steel wire in a clamping manner, and the tension sensor, the pressure sensor and the electric cylinder are connected to the third steel wire rope clamp and are connected in series along the axial direction of the central steel wire.
  3. 3. The device for testing the contact of the multi-wire spiral inside the hoisting steel wire rope according to claim 1, further comprising a rotary driving mechanism for driving the rotary disc, wherein the rotary driving mechanism comprises a second stepping motor, a driving gear, a driven gear, a coupler, a bearing seat and an L-shaped plate, wherein an output shaft of the second stepping motor is in transmission connection with the driving gear through the coupler and a transmission shaft in sequence, and the driving gear is meshed with the driven gear;
    a dovetail groove used for embedding the torsion block and a bearing mounting hole which is positioned at the rear part of the dovetail groove and used for mounting a bearing are arranged at the axis of the driven gear, the outer ring of the bearing is mounted in the bearing mounting hole, the inner ring of the bearing is connected with short shafts through a key, the other end of each short shaft is fixedly connected with the upper end of the L-shaped plate, and a through hole through which a plurality of steel wires pass without hindrance is formed in the middle of each short shaft;
    a plurality of pulley supporting units are fixedly connected to the end face of the driven gear at the side of , and pulleys are connected to the tops of the pulley supporting units.
  4. 4. The device for testing the contact of the multi-wire spiral inside the hoisting steel wire rope according to claim 1, wherein the disc surface of the sliding disc is provided with rectangular sliding grooves, the second sections of the two link mechanisms are inserted into the corresponding rectangular sliding grooves and slide in the rectangular sliding grooves, the length of the second sections of the two links is longer than that of the rectangular sliding grooves, the second sections of the two links are pushed out of the rectangular sliding grooves and then contact with the end of the lever, so that force is transmitted to the lever part, and different loads applied to the steel wires are adjusted by adjusting the fulcrum of each lever, so that different loads applied to the steel wires inside the steel wire rope under actual working conditions are simulated.
  5. 5. The apparatus of claim 1, further comprising a drum loading mechanism for simulating frictional wear caused by the wire rope winding on the drum during actual production, comprising:
    roller body, set up in end of the said work level, the roller body has arc surface contacting with strand of said steel wire to be measured, the left, right both ends of the roller body pass roller semi-axis, and slide block and U-shaped frame slip connection separately, there are vertical concrete chutes for the guide movement of the said slide block on both sides inboard wall of the said U-shaped frame, the bottom of the U-shaped frame connects with the third electronic cylinder fixedly, the third electronic cylinder is used for driving the said roller body to move up and down and back and forth along the vertical concrete chute of the U-shaped frame;
    the two brackets are symmetrically arranged on the workbench by taking a measured steel wire rope strand as a center line, the ends at the tops of the two brackets are hinged with the ends of long cantilevers respectively towards the extension direction of the steel wire rope strand, a long bottom plate is connected between the suspended ends of the two long cantilevers, and the rope clamping device is installed and fixed on the long bottom plate;
    electric push rods are arranged between the support and the middle part of the long cantilever at the side of of the bottom of each support, and when the electric push rods do telescopic motion, the suspended end of the long cantilever moves along an arc track.
  6. 6. The apparatus for testing the contact of a multi-wire spiral inside a hoist rope according to claim 5, wherein the drum body has a hollow interior, and an arc-shaped groove is formed on an arc-shaped surface of the drum body, which is in contact with the strand of the wire to be tested.
  7. 7. The device for testing the contact of a multi-filament spiral inside a hoisting steel wire rope according to claim 1, wherein:
    the outer walls of two sides of the U-shaped frame are respectively fixedly connected with roller half shafts, wherein ends of roller half shafts are connected with the bearing support, and roller half shafts are connected with the steering engine;
    and a vertical vibration exciter is arranged at the bottom side of the U-shaped frame, and an output shaft of the vertical vibration exciter is connected with any roller half shaft at the left side and the right side of the roller main body through a dowel bar so as to simulate the micro motion between the roller main body and a steel wire rope strand when the steel wire rope strand is wound on the roller main body under the actual working condition.
  8. 8. The device for testing the contact of a multi-filament spiral inside a hoisting steel wire rope according to claim 1, wherein: the device also comprises a steel wire rope strand radial force loading mechanism for loading the steel wire rope strand with radial force, and the device comprises:
    the bidirectional ball screw moving pair is fixed on the upper part of the workbench and comprises a bidirectional ball screw, an th moving pair and a second moving pair which are arranged on the bidirectional ball screw, wherein the th moving pair and the second moving pair move oppositely, a th clamping arm is connected to the th moving pair, a second clamping arm is connected to the second moving pair, and the th clamping arm and the second clamping arm are symmetrically arranged along the center of the steel wire rope strand;
    the tail end of the clamping arm and the tail end of the second clamping arm are respectively provided with a semi-arc pressing groove, and the two semi-arc pressing grooves press and clamp the steel wire rope strand.
  9. 9. The device for testing the contact of the multi-filament spiral in the hoisting steel wire rope according to claim 8, wherein the th clamping arm and the second clamping arm are identical in structure and respectively comprise a front clamping arm, a rear clamping arm and a pull and pressure sensor connected between the front clamping arm and the rear clamping arm, the front clamping arm is fixedly connected with the moving pair, and the tail end of the rear clamping arm is provided with the semi-arc-shaped pressing groove.
  10. 10, testing steps based on the device for testing the internal multi-wire spiral contact of hoisting steel wire rope according to any of claims 1-9, wherein the steel wire rope strand comprises three layers, namely a center steel wire, a second layer of 6 steel wire groups coated outside the center steel wire and a third layer of 12 steel wire groups coated outside the second layer of 6 steel wire groups, and correspondingly, the steel wire spiral contact mechanisms comprise two groups, namely a spiral contact mechanism of the second layer of steel wire and a spiral contact structure of the third layer of steel wire, and the testing steps comprise the following steps:
    (1) fixing the end of the central steel wire on a third steel wire rope clamp connected with the electric cylinder, and fixing the end of the central steel wire on a second steel wire rope clamp at the stepping motor end after penetrating through a rope clamping device, a large L-shaped plate II, a twelve-wire twisting block central hole, a dodecagon frame, a L-shaped plate, a six-wire twisting block central hole and a hexagon frame;
    (2) step motor works to twist the central steel wire;
    (3) the second layer of steel wires and the third layer of steel wires are mutually and closely attached to each other according to the sequence of the inner layer and the outer layer and pass through the central hole of the rope clamping device, and pre-tensioning is carried out, so that the two layers of steel wires are fixed by ends and do not slide;
    (4) the six steel wires on the second layer are annularly arranged around the central steel wire, and sequentially pass through the second middle hole of the large L-shaped plate, the central hole of the twelve-wire twisting block, the interior of the dodecagon frame, the middle hole of the L-shaped plate and the central hole of the six-wire twisting block from the rope clamping device, and are finally clamped and fixed by corresponding steel wire clamps;
    (5) arranging twelve steel wires on the third layer annularly around the steel wires on the second layer, sequentially passing through the second middle hole of the large L plate and the central hole of the twelve-wire twisting block from the rope clamping device, and finally clamping and fixing by corresponding steel wire clamps;
    (6) the second step motor acts to twist the second layer of six steel wires, and then the second electric cylinder acts to press down the push disc so as to tension the second layer of six steel wires;
    (7) and thirdly, the motor acts to twist the third layer of steel wires, and then the second electric cylinder acts to press down the second push disc so as to tension the third layer of steel wires, so that the nineteen wires are completely loaded in three layers.
CN201911088165.8A 2019-11-08 2019-11-08 multi-wire spiral contact testing device and method in hoisting steel wire rope Pending CN110736673A (en)

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Application Number Priority Date Filing Date Title
CN201911088165.8A CN110736673A (en) 2019-11-08 2019-11-08 multi-wire spiral contact testing device and method in hoisting steel wire rope

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Application Number Priority Date Filing Date Title
CN201911088165.8A CN110736673A (en) 2019-11-08 2019-11-08 multi-wire spiral contact testing device and method in hoisting steel wire rope

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010230543A (en) * 2009-03-27 2010-10-14 Chuo Spring Co Ltd Durability testing method
CN102175548A (en) * 2011-03-21 2011-09-07 武汉理工大学 Test device for abrasion of multilayer winding wire rope-pulley
CN103983457A (en) * 2014-05-26 2014-08-13 华东交通大学 High-speed railway bearing matched loose simulator stand
CN104634686A (en) * 2015-03-10 2015-05-20 中国矿业大学 Twisted-type hoister steel wire rope interlayer friction detection device and method
CN105842154A (en) * 2016-03-22 2016-08-10 中国电力科学研究院 Friction test device for steel wire rope
CN208730358U (en) * 2018-08-23 2019-04-12 宁波杉越新材料有限公司 Planar stretch device
CN109975115A (en) * 2018-11-21 2019-07-05 中国矿业大学 Multifibres helical contact fatigue, abrasion and damage detection apparatus and detection method inside wirerope

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010230543A (en) * 2009-03-27 2010-10-14 Chuo Spring Co Ltd Durability testing method
CN102175548A (en) * 2011-03-21 2011-09-07 武汉理工大学 Test device for abrasion of multilayer winding wire rope-pulley
CN103983457A (en) * 2014-05-26 2014-08-13 华东交通大学 High-speed railway bearing matched loose simulator stand
CN104634686A (en) * 2015-03-10 2015-05-20 中国矿业大学 Twisted-type hoister steel wire rope interlayer friction detection device and method
CN105842154A (en) * 2016-03-22 2016-08-10 中国电力科学研究院 Friction test device for steel wire rope
CN208730358U (en) * 2018-08-23 2019-04-12 宁波杉越新材料有限公司 Planar stretch device
CN109975115A (en) * 2018-11-21 2019-07-05 中国矿业大学 Multifibres helical contact fatigue, abrasion and damage detection apparatus and detection method inside wirerope

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