AU2019357072B2 - Device and method for testing bearing property of mining annular steel wire rope - Google Patents

Device and method for testing bearing property of mining annular steel wire rope Download PDF

Info

Publication number
AU2019357072B2
AU2019357072B2 AU2019357072A AU2019357072A AU2019357072B2 AU 2019357072 B2 AU2019357072 B2 AU 2019357072B2 AU 2019357072 A AU2019357072 A AU 2019357072A AU 2019357072 A AU2019357072 A AU 2019357072A AU 2019357072 B2 AU2019357072 B2 AU 2019357072B2
Authority
AU
Australia
Prior art keywords
motor
driving wheel
positioning
steel wire
roller
Prior art date
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.)
Active
Application number
AU2019357072A
Other versions
AU2019357072A1 (en
Inventor
Pengpeng CHEN
Qiang NIU
Zhongqiu WANG
Shixiong Xia
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Mining and Technology CUMT
Original Assignee
China University of Mining and Technology CUMT
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China University of Mining and Technology CUMT filed Critical China University of Mining and Technology CUMT
Publication of AU2019357072A1 publication Critical patent/AU2019357072A1/en
Application granted granted Critical
Publication of AU2019357072B2 publication Critical patent/AU2019357072B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0017—Tensile
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003—Generation of the force
    • G01N2203/0042—Pneumatic or hydraulic means
    • G01N2203/0048—Hydraulic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058—Kind of property studied
    • G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
    • G01N2203/0073—Fatigue
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0262—Shape of the specimen
    • G01N2203/0278—Thin specimens
    • G01N2203/028—One dimensional, e.g. filaments, wires, ropes or cables

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

A device for testing the bearing property of a mining annular steel wire rope (5), comprising a steel wire rope loading device (1), a motor drive device (2), a detouring wheel positioning device (3), a positioning platform (4), and a drive wheel positioning device (6). The steel wire rope loading device (1) is arranged in the middle of a circular arc-shaped section on the left of the positioning platform (4) in the horizontal direction. The motor drive device (2) and the detouring wheel positioning device (3) are arranged at a circular arc-shaped section on the left of the positioning platform (4) in the radial direction, and are symmetrically arranged at both sides of the steel wire rope loading device (1). The drive wheel positioning device (6) is uniformly arranged at the circular arc-shaped section on the right of the positioning platform (4) in the radial direction. The drive wheel winding process and the detouring wheel rope returning process of the annular steel wire rope (5) in an endless rope transportation process are simulated on the basis that a hydraulic cylinder loads, a double-way hydraulic motor drives the annular steel wire rope (5), and a double-way hydraulic pump provides the load damping, and the tensile property and the fatigue life of the annular steel wire rope (5) are tested so as to accurately estimate the loading property thereof. The reliability is high, the university is high, and important significance in guaranteeing the safety of the annular steel wire rope (5) in the endless rope transportation system is achieved.

Description

Device and Method for Testing Bearing Property of Mining Annular Steel Wire Rope
Technical Field
The present invention relates to a device and a method for testing bearing property, in particular to a device and a method for testing the bearing property of a mining annular steel wire rope suitable for use in coal mines.
Background Art
Annular steel wire ropes, which are also known as closed joint-free steel wire ropes, are usually applied to overhead passenger transport devices in coal mines, which belong to endless rope transportation systems and are the most commonly used equipment for obliquely transporting personnel up and down in mines. As the power traction unit of a transportation system, the annular steel wire rope is key to the smooth and safe operation of the endless rope transportation system. Under the action of a motor or a hydraulic motor, a pre-tensioned annular steel wire rope is continuously wound circularly between a driving wheel and a detour wheel, which may result in failures of the annular steel wire rope, such as broken wires, reduced diameter, and the like. The "Coal Mine Safety Regulations" stipulates that the steel wire rope for any overhead passenger transport device shall be checked at least once a week, and must be discarded and replaced if the ratio of the cross-sectional area of broken wire to the total cross-sectional area of the steel wire ropes in one lay length is greater than 10%, or the diameter of the steel wire rope is reduced by 10% when compared with the nominal diameter of the steel wire rope. Before installing the new wire rope, it should be avoided that the new wire rope reduce the traction performance of the transportation system, causing severe potential safety hazards. In addition, as long-term continuous operating coal mine equipment, the overhead passenger transport device has to be stopped to change the wire rope. Severe economic losses may be resulted if it is found that reparation is necessary after the wire rope is replaced. Therefore, it is necessary to carry out strict bearing property test on the new steel wire rope before replacing with the new wire rope.
Presently, there are numerous annular steel wire rope manufacturers, which employ different manufacturing processes and production standards, but a universal apparatus for bearing property test is unavailable. Owing to the differences in coal mine yield, roadway form, quantity and turnover frequency of miners, there are different requirements for traction force and traction speed, thus overhead passenger transport devices with different winding radii are produced. Consequently, it is difficult to employ a universal apparatus to testing the properties of annular steel wire ropes. However, building up specific testing apparatuses for annular steel wire ropes with different winding radii would result in high construction and operation costs, which does not meet the requirements for economic efficiency. At present, in the pre-delivery inspections and tests of steel wire ropes, the steel wire ropes are mainly tested through linear tension and torsion tests or through tension-breaking, bending and torsion tests. It cannot effectively test the bearing capacity of the steel wire ropes with different winding radii. As a result, the testing results cannot accurately reflect the bearing capacity of the steel wire ropes.
Up to now, the testing and research on annular steel wire ropes mainly focus on the testing of the equipment in service. For example, the Patent with the Patent No. ZL 201410480749 has disclosed an online flaw detection device for steel wire ropes of mining overhead passenger transport devices,
.I .
which detects the failure in an annular steel wire rope by passing the annular steel wire rope through a flaw detection magnetizer and a flaw detection sensor sequentially; the Patent with the Patent No. ZL201520030246 has disclosed a comprehensive quality measurement apparatus for endless steel wire ropes, which determines the quality of a steel wire rope by testing whether the steel wire rope can withstand maximum tensioning force. However, at present, in the above researches, annular steel wire ropes with different winding diameters cannot be tested, the creeping process of the steel wire ropes in the wrap arc cannot be simulated, and the bearing properties of the steel wire ropes, such as tensile strength, fatigue life and the like, cannot be tested accurately. Therefore, it is necessary to develop a testing device, which can test the bearing property of annular steel wire ropes with different winding radii and accurately evaluate the tensile strength and fatigue life of the steel wire ropes, so as to centrally check different types of steel wire ropes produced by different manufacturers before installing the steel wire ropes on site, in order to ensure the safety of the endless rope transportation systems in mines. Such a testing device is unavailable at present.
Contents of the Invention
It would be advantageous if at least preferred embodiments of the present invention were to overcome the drawbacks in the prior art and provide a device and a method for testing the bearing property of a mining annular steel wire rope, which are simple in structure, convenient to operate, safe and reliable, and good in test results.
In a first aspect, the present invention provides a device for testing the bearing property of a mining annular steel wire rope. The device for testing the bearing property of a mining annular steel wire rope in the present invention comprises a steel wire rope loading device, motor driving devices, detour wheel positioning devices, a positioning platform and driving wheel positioning devices, wherein the positioning platform is arranged in the horizontal direction, the steel wire rope loading device is arranged at a middle position of a left-side arc section of the positioning platform in the horizontal direction, the motor driving devices and the detour wheel positioning devices are radially arranged on the left-side arc section of the positioning platform and symmetrically arranged on the both sides of the steel wire rope loading device, and the driving wheel positioning devices are uniformly arranged on a right-side arc section of the positioning platform in the radial direction; the positioning platform is in an oval ring shape, a plurality of positioning holes are distributed on the circumference of the oval ring, and the hole density of the positioning holes along the left-side arc section and the right-side arc section meets a testing requirement that the arc of the circular steel wire rope enclosed by a plurality of driving wheel positioning devices is adapted to wind tested circular steel wire ropes in different diameters, and satisfy that the arc of the circular steel wire rope enclosed by the steel wire rope loading device, the motor driving device and the detour wheel positioning device is equal to the winding diameter of the tested circular steel wire.
The steel wire rope loading device comprises a hydraulic cylinder sleeve, a tension loading slide table, a tension loading lead screw, a tension loading lead screw nut, a loading hydraulic cylinder piston rod, a tension loading roller, a tension loading friction liner, a tension loading support table, a tension loading support base and a tension loading hand wheel; the tension loading support table is arranged on the tension loading support base, the tension loading lead screw, the tension loading lead screw nut and the tension loading hand wheel are coaxially arranged, and the tension loading hand wheel rotates to drive the tension loading lead screw to rotate, thereby pushing the tension loading lead screw nut to move forward and backward; the tension loading slide table is fixed on the tension loading screw nut and can slide on the top surface of the tension loading support table in • 2 • the axial direction; the hydraulic cylinder sleeve is axially arranged on the tension loading slide table, the tension loading roller is provided on the top end of the loading hydraulic cylinder piston rod, the rim of the tension loading roller is provided with a groove, and the tension loading friction liner is mounted in the groove and provided with a wire rope groove.
The motor driving device comprises a motor lead screw nut, a main motor slide table, a motor positioning bolt, a two-way motor, a main motor shaft, a main motor roller, motor clamping bolts, a motor friction liner, an auxiliary motor roller, an auxiliary motor slide table, motor clamping nuts, a motor screw, a motor support base, a motor support table and a motor hand wheel; the motor support table is arranged on the motor support base, the motor lead screw, the motor lead screw nut and the motor hand wheel are coaxially arranged, and the motor hand wheel rotates to drive the motor lead screw to rotate, thereby pushing the motor lead screw nut to move forward and backward; the main motor slide table is fixed to the motor screw nut and can slide on the top surface of the motor support table in the axial direction; the two-way motor and the main motor roller are fixed coaxially on the main motor slide table by the motor positioning bolts, and the two-way motor drives the main motor roller to rotate synchronously; the auxiliary motor slide table is arranged on the top surface of the motor support table, the auxiliary motor roller is provided on the auxiliary motor slide table, and the axises of the main motor roller and the auxiliary motor roller are in the same line; the main motor slide table and the auxiliary motor slide table are respectively provided with collinear through-holes on both sides, the motor clamping bolts penetrate through the through-holes from one end to connect the main motor slide table and the auxiliary motor slide table, and are tightened up at the other end by means of the motor clamping nuts, so that the main motor roller and the auxiliary motor roller can clamp the tested annular steel wire rope under the action of extrusion force; the rims of the main motor roller and the auxiliary motor roller are provided with a groove respectively, and the motor friction liner is arranged in the groove and provided with a wire rope groove;
The detour wheel positioning device comprises a detour wheel support table, a detour wheel lead screw, a detour wheel lead screw nut, a detour wheel slide table, a detour wheel roller, a detour wheel friction liner, a detour wheel support base and a detour wheel hand wheel; the detour wheel support table is arranged on the detour wheel support base, the detour wheel lead screw, the detour wheel lead screw nut and the detour wheel hand wheel are coaxially arranged, and the detour wheel hand wheel rotates to drive the detour wheel lead screw to rotate, thereby pushing the detour wheel lead screw nut to move forward and backward; the detour wheel slide table is fixed on the detour wheel lead screw nut and can slide on the top surface of the detour wheel support table in the axial direction; the detour wheel roller is arranged on the detour wheel slide table, and the axis of the detour wheel roller is orthogonal to the axis of the detour wheel lead screw; the rim of the detour wheel roller is provided with a groove, and the detour wheel friction liner is arranged in the groove and provided with a wire rope groove;
The driving wheel positioning device comprises a driving wheel positioning support table, a two-way hydraulic pump, a driving wheel positioning lead screw, a driving wheel positioning support base, hydraulic pump positioning bolts, a main hydraulic pump shaft, a main driving wheel positioning roller, a main driving wheel positioning slide table, a driving wheel positioning friction liner, driving wheel clamping bolts, an auxiliary driving wheel positioning roller, an auxiliary driving wheel positioning slide table, a driving wheel positioning lead screw nut, driving wheel clamping nuts and a driving wheel positioning hand wheel; the driving wheel positioning support
• 3 • table is arranged on the driving wheel positioning support base, the driving wheel positioning lead screw, the driving wheel positioning lead screw nut and the driving wheel positioning hand wheel are coaxially arranged, and the driving wheel positioning hand wheel rotates to drive the driving wheel positioning lead screw to rotate, thereby pushing the driving wheel positioning lead screw nut to move forward and backward; the main driving wheel positioning slide table is fixed on the driving wheel positioning lead screw nut and can slide on the top surface of the driving wheel positioning support table in the axial direction; the two-way hydraulic pump and the main driving wheel positioning roller are coaxially fixed on the main driving wheel positioning slide table by the hydraulic pump positioning bolts, and the main driving wheel positioning roller drives the main hydraulic pump shaft to rotate synchronously; the auxiliary driving wheel positioning slide table is arranged on the top surface of the driving wheel positioning support table, the auxiliary driving wheel positioning roller is arranged on the auxiliary driving wheel positioning slide table, and the axial centers of the main driving wheel positioning roller and the auxiliary driving wheel positioning roller are in the same line; the main driving wheel positioning slide table and the auxiliary driving wheel positioning slide table are respectively provided with collinear through-holes in both sides, and the driving wheel clamping bolts penetrate through the through-holes from one end to connect the main driving wheel positioning slide table and the auxiliary driving wheel positioning slide table, and are tightened up at the other end by means of the driving wheel clamping nuts, so that the main driving wheel positioning roller and the auxiliary driving wheel positioning roller can clamp the tested annular steel wire rope under the action of extrusion force; the rims of the main driving wheel positioning roller and the auxiliary driving wheel positioning roller are provided with a groove respectively, the driving wheel positioning friction liner is mounted in the groove and provided with a wire rope groove.
The number of the driving wheel positioning devices and the detour wheel positioning devices may depend on the winding radius and testing accuracy of the tested annular steel wire rope.
In a second aspect, the present invention provides a testing method of the above testing device for testing the bearing property of a mining annular steel wire rope, comprising the following steps:
(a) Mounting the tension loading support table on the tension loading support base, mounting the tension loading lead screw, the tension loading lead screw nut and the tension loading hand wheel coaxially, fixing the tension loading slide table on the tension loading lead screw nut, arranging the hydraulic cylinder sleeve on the tension loading slide table in the axial direction, mounting the tension loading friction liner in the groove of the tension loading roller, and mounting the tension loading roller on the top end of the loading hydraulic cylinder piston rod, so as to be assembled into the steel wire rope loading device;
(b) Mounting the motor support table on the motor support base, mounting the motor lead screw, the motor lead screw nut and the motor hand wheel coaxially, mounting the motor friction liner in the rim grooves of the main motor roller and the auxiliary motor roller, fixing the two-way motor and the main motor roller coaxially to the main motor slide table by the motor positioning bolts, mounting the auxiliary motor roller on the auxiliary motor slide table, connecting the main motor slide table and the auxiliary motor slide table together by penetrating the motor clamping bolts through the through-holes from one end of the slide table, and fixing the main motor slide table and the auxiliary motor slide table at the other end of the slide table by the motor clamping nuts, so as to be assembled into the motor driving device;
.4 .
(c) Mounting the detour wheel support table on the detour wheel support base, mounting the detour wheel lead screw, the detour wheel lead screw nut and the detour wheel hand wheel coaxially, fixing the detour wheel slide table to the detour wheel lead screw nut, mounting the detour wheel roller on the detour wheel slide table so that the axis of the detour wheel roller is orthogonal to the axis of the detour wheel lead screw, and mounting the detour wheel friction liner in the rim groove of the detour wheel roller, so as to be assembled into the detour wheel positioning device;
(d) Mounting the driving wheel positioning support table on the driving wheel positioning support base, mounting the driving wheel positioning lead screw, the driving wheel positioning lead screw nut and the driving wheel positioning hand wheel coaxially, fixing the main driving wheel positioning slide table to the driving wheel positioning lead screw nut, mounting the driving wheel positioning friction liner in the rim grooves of the main driving wheel positioning roller and the auxiliary driving wheel positioning roller, fixing the two-way hydraulic pump and the main driving wheel positioning roller coaxially on the main driving wheel positioning slide table by the hydraulic pump positioning bolts, mounting the auxiliary driving wheel positioning roller on the auxiliary driving wheel positioning slide table, connecting the main driving wheel positioning slide table and the auxiliary driving wheel positioning slide table by penetrating the driving wheel clamping bolts through the through-holes from one end of the slide table, and fixing the main driving wheel positioning slide table and the auxiliary driving wheel positioning slide table at the other end of the slide table by the driving wheel clamping nuts, so as to be assembled into the driving wheel positioning device;
(e) Setting the number of positioning holes of the positioning platform on the basis of the winding diameter D and 1800 wrapping angle of the tested annular steel wire rope, mounting a steel wire rope loading device at the middle position of the left-side arc section of the positioning platform in the horizontal direction, mounting a motor driving device on the left-side arc section of the positioning platform at the upper side and the lower side of the steel wire rope loading device in the radial direction respectively, and mounting a plurality of detour wheel positioning devices on the left-side arc section of the positioning platform beside the upper motor driving device and the lower motor driving device in the radial direction respectively; at the same time, mounting a plurality of driving wheel positioning devices on the right-side arc section of the positioning platform in the radial direction;
(f) Rotating the tension loading hand wheel to push the tension loading lead screw nut to move forward and backward, rotating the motor hand wheel to push the motor lead screw nut to move forward and backward, rotating the detour wheel hand wheel to push the detour wheel lead screw nut to move forward and backward, and rotating the driving wheel positioning hand wheel to push the driving wheel positioning lead screw nut to move forward and backward, so that the diameter of the arc enclosed by the rims of the tension loading roller, the main motor roller and the detour wheel roller on the left side of the positioning platform is equal to the winding diameter D and the angle of the arc is equal to the wrapping angle of 180°, and the diameter of the arc enclosed by the rim of the main driving wheel positioning roller on the right side is equal to the winding diameter D and the angle of the arc is equal to the wrapping angle of 180;
(g) Rotating the tension loading hand wheel to push the tension loading lead screw nut to retract, . 5.
embedding the tested annular steel wire rope into the wire rope grooves of the tension loading friction liner, the motor friction liner, the detour wheel friction liner and the driving wheel positioning friction liner, rotating the tension loading hand wheel to push the tension loading lead screw nut to extend until the tension loading roller presses the tested annular steel wire rope for pretensioning, tightening up the motor clamping nuts and the driving wheel clamping nuts so that the motor friction liner and the driving wheel positioning friction liner can tightly clamp the tested annular steel wire rope and cannot slide with respect to the tested annular steel wire rope; (h) Adjusting the oil pressure at the oil outlet of the loading hydraulic cylinder and the oil pressure at the oil inlets of the two two-way motors to simulate the load at the slack wire side FS ack Wre 3 de and the load at the tensioned wire side FTensioned Wre S de at the two sides of the
driving wheel of the tested annular steel wire rope:
FI'ack Wre Sde - FHdraul i c Oyl i nder 2M
F - FHdraul i c Oyl i nder +2M'
2 2cos(fl) r
Where, FHFdraul i c OI i nder is the pressure exerted by the tension loading roller on the tested annular
steel wire rope, M is the output torque of the two-way motor, r is the radius of the main motor roller, and # is the included angle between a line connecting the axial centers of the tension loading
roller and the main motor roller and the horizontal direction, simulating the tangential force distribution of the driving wheel of the tested annular steel wire rope within the range of the wrapping angle of 180°:
L2FS ack Wre S dee"9 O O<R fo = BD (0 aR<_0
Where, 0 is the circumferential coordinate with the separation point between the steel wire rope and the friction wheel at the driving side as the origin and the counter-clockwise direction as the positive direction, B is the width of the actual friction liner of the hoister, p is the friction
coefficient of the actual friction liner, and aR= l (F~ensi oned Wre S de /FS ack Wre S de) is the creeping
arc angle in the enclosed arc under the action of FTensi ned Wre S de and FSack Wre S de'
so the tangential forces f2,f2,f3, 4,fsff7 of the main driving wheel positioning roller of the
tested annular steel wire rope on the right side of the positioning platform are botained, and based
• 6 • on the above, the oil pressure at the oil discharge port of the two-way hydraulic pump is further adjusted, thereby providing additional rotational damping to the main driving wheel positioning roller: k =FTensi owned Wr e S de FS ack Wr e S de fA+f2 + f3+f4 +f 5 +f 6 +f Ml = kf1r, M 2 = kf2 r, M 3 = kf3r, M4 = kf4 r, M 5 = kf5r, M 6 - kf6r, M 7 = kf7r
Where, k is a compensation coefficient, r is the radius of the main driving wheel positioning roller, and FTenksifoedkrfe±kkde2 3 4 5 f 6 kf 7 +FackWreSde when the two-way motor
drives the annular steel wire rope to rotate circularly,
so a winding process of the driving wheel of the actual annular steel wire rope in an endless rope transportation system and a creeping process of the steel wire rope in the enclosed arc in the winding process are simulated.
In some embodimnets, to test the tensile property of the annular steel wire rope, the oil pressure at the oil outlet of the loading hydraulic cylinder, the oil pressure at the oil inlet of the two-way motor and the oil pressure at the oil discharge port of the two-way hydraulic pump are adjusted to simulate the working conditions, such as the overload and wire locking, in the winding process of the tested annular steel wire rope, the loading hydraulic cylinder, the two-way hydraulic pump and the two-way motor are started sequentially, and whether the tested annular steel wire rope meets the tensile property requirement is detected by detecting whether the variation of the diameter of the tested annular steel wire rope is within an allowable threshold;
In some embodimnets, to test the fatigue life of the annular steel wire rope, the oil pressure at the oil outlet of the loading hydraulic cylinder, the oil pressure at the oil inlet of the two-way motor and the oil pressure at the oil discharge port of the two-way hydraulic pump are adjusted to simulate the winding process of the driving wheel of the endless rope transportation system, the tested annular steel wire rope is dragged circularly, and whether the tested annular steel wire rope meets the load-bearing fatigue life requirement is tested by detecting whether the broken wire percentage and the diameter variation of the tested annular steel wire rope are within the allowable thresholds in the circular operation period; besides, since there is no actual restriction on the transportation of the endless rope transportation system, the testing process can be accelerated to a greater extent by adjusting the flow rates of the two-way motor and the two-way hydraulic pump.
The present invention beneficially employs driving wheel and detour wheel positioning devices based on lead screw driving, and is applicable to different winding radii; harsh operating conditions such as overload and wire locking can be simulated by means of loading by hydraulic cylinder and driving by two-way hydraulic motor, and the tensile property of the steel wire rope under extreme operating conditions can be tested. Under a principle that the steel wire rope is loaded by the hydraulic cylinder and driven by the two-way hydraulic motor and load damping is provided by two-way hydraulic pump, a winding process of the driving wheel and a rope return process of the detour wheel of the annular steel wire rope in an endless rope transportation system can be simulated, the tangential force distribution of the annular steel wire rope along the actual driving wheel can be simulated by utilizing the hydraulic pump to provide load damping, and thereby a creeping process of the steel wire rope in the enclosed arc can be further simulated, so as to test the . 7 .
fatigue life of the steel wire rope accurately and achieve the accurate test of the bearing property of the steel wire rope. The device and method provided in the present invention can meet the requirements of testing annular steel wire ropes in different winding radii, test the bearing property of tested annular steel wire ropes in different winding radii, and accurately evaluate the tensile capacity and fatigue life of the steel wire ropes. The device is simple in structure, convenient to operate, with high reliability and high universality, and is of great significance for ensuring the safety of the annular steel wire rope in an endless rope transportation system, and has extensive practicability in the art.
Description of Drawings
Fig. 1 is a schematic structural view of the device according to the present invention;
Fig. 2 is a schematic structural view of the steel wire rope loading device;
Fig. 3 is a schematic structural view of the motor driving device;
Fig. 4 is a schematic structural view of the detour wheel positioning device;
Fig. 5 is a schematic structural view of the driving wheel positioning device;
Fig. 6 is a schematic view illustrating the testing principle of the device according to the present invention.
In the figures: 1 - steel wire rope loading device; 1-a - hydraulic cylinder sleeve; 1-b - tension loading slide table; 1-c - tension loading lead screw; 1-d - tension loading lead screw nut; 1-e loading hydraulic cylinder piston rod; 1-f - tension loading roller; 1-g - tension loading friction liner; 1-h - tension loading support platform; 1-i - tension loading support base; 1-j - tension loading hand wheel; 2 - motor driving device; 2-a - motor lead screw nut; 2-b - main motor slide table; 2-c motor positioning bolt; 2-d - two-way motor; 2-e - main motor shaft; 2-f - main motor roller; 2-g motor clamping bolt; 2-h - motor friction liner; 2-i - auxiliary motor roller; 2-j - auxiliary motor slide table; 2-k - motor clamping nut; 2-1 - motor lead screw; 2-m - motor support base; 2-n - motor support table; 2-o - motor hand wheel; 3 - detour wheel positioning device; 3-a - detour wheel support platform; 3-b - detour wheel lead screw; 3-c- detour wheel lead screw nut; 3-d - detour wheel slide table; 3-e - detour wheel roller; 3-f - detour wheel friction liner; 3-g - detour wheel support base; 3-h - detour wheel hand wheel; 4 - positioning platform; 4-a - positioning hole; 5 tested annular steel wire rope; 6 - driving wheel positioning device; 6-a - driving wheel positioning support table; 6-b - two-way hydraulic pump; 6-c - driving wheel positioning lead screw; 6-d driving wheel positioning support base; 6-e - hydraulic pump positioning bolt; 6-f - main hydraulic pump shaft; 6-g - main driving wheel positioning roller; 6-h - main driving wheel positioning slide table; 6-i - driving wheel positioning friction liner; 6-j - driving wheel clamping bolt; 6-k - auxiliary driving wheel positioning roller; 6-1 - auxiliary driving wheel positioning slide table; 6-m - driving wheel positioning lead screw nut; 6-n - driving wheel clamping nut; 6-o - driving wheel positioning hand wheel.
Embodiments
Hereunder the present invention will be further described with reference to the embodiments in drawings.
As shown in Fig. 1, the device for testing the bearing property of a mining annular steel wire rope in
• 8 • the present invention mainly comprises a steel wire rope loading device 1, two motor driving devices 2, a plurality of detour wheel positioning devices 3, a positioning platform 4 and a plurality of driving wheel positioning devices 6, wherein the positioning platform 4 is arranged in the horizontal direction, and the steel wire rope loading device 1 is arranged at a middle position of a left-side arc section of the positioning platform 4 through a positioning hole 4-a in the horizontal direction, the motor driving devices 2 and the detour wheel positioning devices 3 are radially arranged on the left-side arc section of the positioning platform 4 and symmetrically arranged on the two sides of the steel wire rope loading device 1, and the driving wheel positioning devices 6 are uniformly arranged on a right-side arc section of the positioning platform 4 through the positioning holes 4-a. The number of the driving wheel positioning devices 6 and the detour wheel positioning devices 3 depends on the winding radius and testing accuracy of the tested annular steel wire rope 5; the hole density of the positioning holes 4-a along the left-side arc section and the right-side arc section shall meet a testing requirement that the arc of the steel wire rope enclosed by the plurality of driving wheel positioning devices 6 is adapted to tested annular steel wire ropes 5 in different winding diameters, and satisfy that the arc of the steel wire rope enclosed by the steel wire rope loading device 1, the motor driving devices 2 and the detour wheel positioning devices 3 is equal to the winding diameter of the tested annular steel wire rope 5.
As shown in Fig. 2, the steel wire rope loading device 1 mainly comprises a hydraulic cylinder sleeve 1-a, a tension loading slide table 1-b, a tension loading lead screw 1-c, a tension loading lead screw nut 1-d, a loading hydraulic cylinder piston rod 1-e, a tension loading roller 1-f, a tension loading friction liner 1-g, a tension loading support table 1-h, a tension loading support base 1-i and a tension loading hand wheel 1-j; the tension loading support table 1-h is arranged on the tension loading support base 1-i, the tension loading lead screw 1-c, the tension loading lead screw nut 1-d and the tension loading hand wheel 1-j are coaxially arranged, and the tension loading hand wheel 1-j rotates to drive the tension loading lead screw 1-c to rotate, thereby pushing the tension loading lead screw nut 1-d to move forward and backward; the tension loading slide table 1-b is fixed on the tension loading lead screw nut 1-d and can slide on the top surface of the tension loading support table 1-h in the axial direction; the hydraulic cylinder sleeve 1-a is arranged on the tension loading slide table 1-b in the axial direction, the tension loading roller 1-f is arranged on the top end of the loading hydraulic cylinder piston rod 1-e, the rim of the tension loading roller 1-f is provided with a groove, the tension loading friction liner 1-g is arranged in the groove and provided with a wire rope groove, and the friction liner is made of polyvinyl chloride or polyurethane composite material.
As shown in Fig. 3, the motor driving device 2 mainly comprises a motor lead screw nut 2-a, a main motor slide table 2-b, motor positioning bolts 2-c, a two-way motor 2-d, a main motor shaft 2-e, a main motor roller 2-f, motor clamping bolts 2-g, a motor friction liner 2-h, an auxiliary motor roller 2-i, an auxiliary motor slide table 2-j, motor clamping nuts 2-k, a motor lead screw 2-1, a motor support base 2-m, a motor support table 2-n and a motor hand wheel 2-o; the motor support table 2-n is arranged on the motor support base 2-m, the motor lead screw 2-1, the motor lead screw nut 2-a and the motor hand wheel 2-o are coaxially arranged, and the motor hand wheel 2-o rotates to drive the motor lead screw 2-1 to rotate, thereby pushing the motor lead screw nut 2-a to move forward and backward; the main motor slide table 2-b is fixed to the motor lead screw nut 2-a and can slide on the top surface of the motor support table 2-n in the axial direction; the two-way motor 2-d and the main motor roller 2-f are fixed coaxially on the main motor slide table 2-b by the motor positioning bolts 2-c, and the two-way motor 2-d drives the main motor roller 2-f to rotate .9.
synchronously; the auxiliary motor slide table 2-j is arranged on the top surface of the motor support table 2-n, the auxiliary motor roller 2-i is provided on the auxiliary motor slide table 2-j, and the axial centers of the main motor roller 2-f and the auxiliary motor roller 2-i are in the same line; the main motor slide table 2-b and the auxiliary motor slide table 2-j are respectively provided with collinear through-holes on both sides, the motor clamping bolts 2-g penetrate through the through-holes from one end to connect the main motor slide table 2-b and the auxiliary motor slide table 2-j, and are tightened up at the other end by means of the motor clamping nuts 2-k, so that the main motor roller 2-f and the auxiliary motor roller 2-i can clamp the tested annular steel wire rope under the action of extrusion force; the rims of the main motor roller 2-f and the auxiliary motor roller 2-i are provided with a groove respectively, and the motor friction liner 2-h is arranged in the groove and provided with a rope groove.
As shown in Fig. 4, the detour wheel positioning device 3 mainly comprises a detour wheel support table 3-a, a detour wheel lead screw 3-b, a detour wheel lead screw nut 3-c, a detour wheel slide table 3-d, a detour wheel roller 3-e, a detour wheel friction liner 3-f, a detour wheel support base 3-g and a detour wheel hand wheel 3-h; the detour wheel support table 3-a is arranged on the detour wheel support base 3-g, the detour wheel lead screw 3-b, the detour wheel lead screw nut 3-c and the detour wheel hand wheel 3-h are coaxially arranged, and the detour wheel hand wheel 3-h rotates to drive the detour wheel lead screw 3-b to rotate, thereby pushing the detour wheel lead screw nut 3-c to move forward and backward; the detour wheel slide table 3-d is fixed on the detour wheel lead screw nut 3-c and can slide on the top surface of the detour wheel support table 3-a in the axial direction; the detour wheel roller 3-e is arranged on the detour wheel slide table 3-d, and the axis of the detour wheel roller 3-e is orthogonal to the axis of the detour wheel lead screw 3-b; the rim of the detour wheel roller 3-e is provided with a groove, and the detour wheel friction liner 3-f is arranged in the groove and provided with a rope groove.
As shown in Fig. 5, the driving wheel positioning device 6 mainly comprises a driving wheel positioning support table 6-a, a two-way hydraulic pump 6-b, a driving wheel positioning lead screw 6-c, a driving wheel positioning support base 6-d, hydraulic pump positioning bolts 6-e, a main hydraulic pump shaft 6-f, a main driving wheel positioning roller 6-g, a main driving wheel positioning slide table 6-h, a driving wheel positioning friction liner 6-i, driving wheel clamping bolts 6-j, an auxiliary driving wheel positioning roller 6-k, an auxiliary driving wheel positioning slide table 6-1, a driving wheel positioning lead screw nut 6-m, driving wheel clamping nuts 6-n and a driving wheel positioning hand wheel 6-o; the driving wheel positioning support table 6-a is arranged on the driving wheel positioning support base 6-d, the driving wheel positioning lead screw 6-c, the driving wheel positioning lead screw nut 6-m and the driving wheel positioning hand wheel 6-o are coaxially arranged, and the driving wheel positioning hand wheel 6-o rotates to drive the driving wheel positioning lead screw 6-c to rotate, thereby pushing the driving wheel positioning lead screw nut 6-m to move forward and backward; the main driving wheel positioning slide table 6-h is fixed on the driving wheel positioning lead screw nut 6-m and can slide on the top surface of the driving wheel positioning support table 6-a in the axial direction; the two-way hydraulic pump 6-b and the main driving wheel positioning roller 6-g are coaxially fixed on the main driving wheel positioning slide table 6-h by the hydraulic pump positioning bolts 6-e, and the main driving wheel positioning roller 6-g drives the main hydraulic pump shaft 6-f to rotate synchronously; the auxiliary driving wheel positioning slide table 6-1 is arranged on the top surface of the driving wheel positioning support table 6-a, the auxiliary driving wheel positioning roller 6-k is arranged on the auxiliary driving wheel positioning slide table 6-1, and the axial centers of the • 10 • main driving wheel positioning roller 6-g and the auxiliary driving wheel positioning roller 6-k are in the same line; the main driving wheel positioning slide table 6-h and the auxiliary driving wheel positioning slide table 6-1 are respectively provided with collinear through-holes in both sides, and the driving wheel clamping bolts 6-j penetrate through the through-holes from one end to connect the main driving wheel positioning slide table 6-h and the auxiliary driving wheel positioning slide table 6-1, and are tightened up at the other end by means of the driving wheel clamping nuts 6-n, so that the main driving wheel positioning roller 6-g and the auxiliary driving wheel positioning roller 6-k can clamp the tested annular steel wire rope 5 under the action of certain extrusion force; the rims of the main driving wheel positioning roller 6-g and the auxiliary driving wheel positioning roller 6-k are provided with a groove respectively, the driving wheel positioning friction liner 6-i is mounted in the groove and provided with a rope groove.
The method for testing the bearing property of a mining annular steel wire rope according to the present invention comprises the following specific steps:
(a) Mounting the tension loading support table 1-h on the tension loading support base 1-i, mounting the tension loading lead screw 1-c, the tension loading lead screw nut 1-d and the tension loading hand wheel 1-j coaxially, fixing the tension loading slide table 1-b on the tension loading lead screw nut 1-d, arranging the hydraulic cylinder sleeve 1-a on the tension loading slide table 1-b in the axial direction, mounting the tension loading friction liner 1-g in the groove of the tension loading roller 1-f, and mounting the tension loading roller 1-f on the top end of the loading hydraulic cylinder piston rod 1-e, so as to be assembled into a steel wire rope loading device 1;
(b) Mounting the motor support table 2-n on the motor support base 2-m, mounting the motor lead screw 2-1, the motor lead screw nut 2-a and the motor hand wheel 2-o coaxially, mounting the motor friction liner 2-h in the rim grooves of the main motor roller 2-f and the auxiliary motor roller 2-i, fixing the two-way motor 2-d and the main motor roller 2-f coaxially to the main motor slide table 2-b by the motor positioning bolts 2-c, mounting the auxiliary motor roller 2-i on the auxiliary motor slide table 2-j, connecting the main motor slide table 2-b and the auxiliary motor slide table 2-j together by penetrating the motor clamping bolts 2-g through the through-holes from one end of the slide table, and fixing the main motor slide table 2-b and the auxiliary motor slide table 2-j at the other end of the slide table by the motor clamping nuts 2-k, so as to assemble two motor driving devices 2;
(c) Mounting the detour wheel support table 3-a on the detour wheel support base 3-g, mounting the detour wheel lead screw 3-b, the detour wheel lead screw nut 3-c and the detour wheel hand wheel 3-h coaxially, fixing the detour wheel slide table 3-d to the detour wheel lead screw nut 3-c, mounting the detour wheel roller 3-e on the detour wheel slide table 3-d so that the axis of the detour wheel roller 3-e is orthogonal to the axis of the detour wheel lead screw 3-b, and mounting the detour wheel friction liner 3-f in the rim groove of the detour wheel roller 3-e, so as to assemble four detour wheel positioning devices 3; the number of the detour wheel positioning devices may be increased or decreased according to actual needs; for example, two to six detour wheel positioning devices may be used.
(d) Mounting the driving wheel positioning support table 6-a on the driving wheel positioning support base 6-d, mounting the driving wheel positioning lead screw 6-c, the driving wheel positioning lead screw nut 6-m and the driving wheel positioning hand wheel 6-o coaxially,
• 11 • fixing the main driving wheel positioning slide table 6-h to the driving wheel positioning lead screw nut 6-m, mounting the driving wheel positioning friction liner 6-i in the rim grooves of the main driving wheel positioning roller 6-g and the auxiliary driving wheel positioning roller 6-k, fixing the two-way hydraulic pump 6-b and the main driving wheel positioning roller 6-g coaxially on the main driving wheel positioning slide table 6-h by the hydraulic pump positioning bolts 6-e, mounting the auxiliary driving wheel positioning roller 6-k on the auxiliary driving wheel positioning slide table 6-1, connecting the main driving wheel positioning slide table 6-h and the auxiliary driving wheel positioning slide table 6-1 by penetrating the driving wheel clamping bolts 6-j through the through-holes from one end of the slide table, and fixing the main driving wheel positioning slide table 6-h and the auxiliary driving wheel positioning slide table 6-1 at the other end of the slide table by the driving wheel clamping nuts 6-n, so as to assemble several driving wheel positioning devices 6;
(e) Selecting appropriate positioning holes 4-a on the positioning platform 4 on the basis of the winding diameter D and 1800 wrapping angle of the tested annular steel wire rope 5, mounting the steel wire rope loading device 1 at a middle position of a left-side arc section of the positioning platform 4 in the horizontal direction, mounting the motor driving devices 2 and the detour wheel positioning devices 3 on the left-side arc section of the positioning platform 4 in the radial direction and arranging them symmetrically on the two sides of the steel wire rope loading device 1, mounting the driving wheel positioning devices 6 uniformly on a right-side arc section of the positioning platform 4 in the radial direction through the positioning holes 4-a, rotating the tension loading hand wheel 1-j to push the tension loading lead screw nut 1-d to move forward and backward, rotating the motor hand wheel 2-o to push the motor lead screw nut 2-a to move forward and backward, rotating the detour wheel hand wheel 3-h to push the detour wheel lead screw nut 3-c to move forward and backward, and rotating the driving wheel positioning hand wheel 6-o to push the driving wheel positioning lead screw nut 6-m to move forward and backward, so that the diameter of the arc enclosed by the rims of the tension loading roller 1-f, the main motor roller 2-f and the detour wheel roller 3-e on the left side of the positioning platform 4 is equal to the winding diameter D and the angle of the arc is equal to the wrapping angle of 180°, and diameter of the arc enclosed by the rim of the main driving wheel positioning roller 6-g on the right side is equal to the winding diameter D and the angle of the arc is equal to the wrapping angle of 180°;
(f) Rotating the tension loading hand wheel 1-j to push the tension loading lead screw nut 1-d to retract, embedding the tested annular steel wire rope 5 into the rope grooves of the tension loading friction liner 1-g, the motor friction liner 2-h, the detour wheel friction liner 3-f and the driving wheel positioning friction liner 6-i, rotating the tension loading hand wheel 1-j to push the tension loading lead screw nut 1-d to extend until the tension loading roller 1-f presses the tested annular steel wire rope 5 for pretensioning, tightening up the motor clamping nuts 2-k and the driving wheel clamping nuts 6-n so that the motor friction liner 2-h and the driving wheel positioning friction liner 6-i can tightly clamp the tested annular steel wire rope 5 and cannot slide with respect to the tested annular steel wire rope 5;
(g) Adjusting the oil pressure at the oil outlet of the loading hydraulic cylinder and the oil pressure at the oil inlets of the two two-way motors 2-d to simulate the load at the slack wire rope side
F ack RDpe S de and the load at the tensioned wire rope side FTensi owned Wre 3 de at both sides of the
• 12 • driving wheel of the tested annular steel wire rope 5, as shown in Fig. 6,
F'S ackW r e Sde=- FH/draul i c OI i nder 2M 2 cos0fl) r
Fens oned VV r e S de FHdr aul i c O/I i nder +2M 2 2cos(fi) r
Where, FH/draulic Olinder is the pressure exerted by the tension loading roller 1-f on the tested
annular steel wire rope 5, M is the output torque of the two-way motor 2-d, r is the radius of the
main motor roller 2-f, and # is the included angle between a line connecting the axial centers of
the tension loading roller 1-f and the main motor roller 2-f and the horizontal direction; simulating the tangential force distribution of the driving wheel of the tested annular steel wire rope 5 within the range of the wrapping angle of 180:
2FS ack Wre S dee"9 O R fo = BD (0 aR<_0
Where, 0 is the circumferential coordinate with the separation point between the steel wire rope and the friction wheel at the driving side as the origin and the counter-clockwise direction as the
positive direction, B is the width of the actual friction liner of the hoister, p is the friction
coefficient of the actual friction liner, and aR= l (F~ensi oned Wre S de / FS ack Wre S de) is the creeping
arc angle in the wrapping arc under the action of FTensi oned Wre S de and F k Wre s d o so the
tangential forces f 1f 2 ,f3,'f 4 ',fslf 7 of the main driving wheel positioning roller 6-g of the
tested annular steel wire rope 5 on the right side of the positioning platform 4 are botained, and based on the above, the oil pressure at the oil discharge port of the two-way hydraulic pump 6-b is further adjusted,thereby providingadditionalrotationaldampingtothemaindrivingwheel positioning roller 6-g:
k FTensi oned Wr e - de F + A+ ++ff4 +f 6 +
M = kf r, M 2 = kf2 r, M 3 = kf3r, M4 = kf4r, M 5 = kf5r, M 6 - kf 6r, M 7 = kf7r
Where, k is a compensation coefficient, r is the radius of the main driving wheel positioning roller
6-g, and FTensi oned Wi re 3 de 2 3 4 5 6 7 + FS k Wre 3 de when the two-way
motor 2-d drives the tested annular steel wire rope 5 to rotate circularly, so a winding process of the driving wheel of the actual annular steel wire rope in an endless rope transportation system and a creeping process of the steel wire rope in the wrapped arc in the winding process are simulated; • 13 •
To test the tensile property of the annular steel wire rope, the oil pressure at the oil outlet of the loading hydraulic cylinder, the oil pressure at the oil inlet of the two-way motor 2-d and the oil pressure at the oil discharge port of the two-way hydraulic pump 6-b are adjusted to simulate working conditions, such as the overload and wire rope locking in the winding process of the tested annular steel wire rope 5, the loading hydraulic cylinder, the two-way hydraulic pump 6-b and the two-way motor 2-d are started sequentially, and whether the tested annular steel wire rope 5 meets the tensile property requirement can be detected by detecting whether the variation of the diameter of the tested annular steel wire rope 5 is within an allowable threshold;
To test the fatigue life of the annular steel wire rope, the oil pressure at the oil outlet of the loading hydraulic cylinder, the oil pressure at the oil inlet of the two-way motor 2-d and the oil pressure at the oil discharge port of the two-way hydraulic pump 6-b are adjusted to simulate the winding process of the driving wheel of the endless rope transportation system, the tested annular steel wire rope 5 is towed circularly, and whether the tested annular steel wire rope 5 meets the load-bearing fatigue life requirement can be tested by detecting whether the broken wire percentage and the diameter variation of the tested annular steel wire rope 5 are within allowable thresholds in the circular operation period; besides, since there is no actual restriction on the transportation of the endless rope transportation system, the testing process can be accelerated to a greater extent by adjusting the flow rates of the two-way motor 2-d and the two-way hydraulic pump 6-b.
It is to be understood that any prior art publication referred to herein does not constitute an admission that the publication forms part of the common general knowledge in the art.
In the claims which follow and in the preceding description of the invention, except where the context requires otherwise due to express language or necessary implication, the word "comprise" or variations such as "comprises" or "comprising" is used in an inclusive sense, i.e. to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments of the invention.
•14

Claims (4)

CLAIMS:
1. A device for testing the bearing property of a mining annular steel wire rope, comprising a steel wire rope loading device (1) and motor driving devices (2), characterized in that, the device further comprises detour wheel positioning devices (3), a positioning platform (4) and driving wheel positioning devices (6), wherein the positioning platform (4) is arranged in the horizontal direction; the steel wire rope loading device (1) is arranged at a middle position of a left-side arc section of the positioning platform (4) in the horizontal direction; the motor driving devices (2) and the detour wheel positioning devices (3) are arranged on the left-side arc section of the positioning platform (4) in the radial direction and symmetrically arranged on both sides of the steel wire rope loading device (1); and the driving wheel positioning devices (6) are uniformly arranged on a right-side arc section of the positioning platform (4) in the radial direction; the positioning platform (4) is in an oval ring shape, a plurality of positioning holes (4-a) are distributed on the circumference of the oval ring, and the hole density of the positioning holes (4-a) along the left-side arc section and the right-side arc section meets a testing requirement that the arc of the annular steel wire rope enclosed by a plurality of driving wheel positioning devices (6) is adapted to wind tested annular steel wire ropes (5) in different diameters, and satisfy that the arc of the annular steel wire rope enclosed by the steel wire rope loading device (1), the motor driving devices (2) and the detour wheel positioning devices (3) is equal to the winding diameter of the tested annular steel wire rope (5); the steel wire rope loading device (1) comprises a hydraulic cylinder sleeve (1-a), a tension loading slide table (1-b), a tension loading lead screw (1-c), a tension loading lead screw nut (1-d), a loading hydraulic cylinder piston rod (1-e), a tension loading roller (1-f), a tension loading friction liner (1-g), a tension loading support table (1-h), a tension loading support base (1-i) and a tension loading hand wheel (1-j); the tension loading support table (1-h) is arranged on the tension loading support base (1-i), the tension loading lead screw (1-c), the tension loading lead screw nut (1-d) and the tension loading hand wheel (1-j) are coaxially arranged, and the tension loading hand wheel (1-j) rotates to drive the tension loading lead screw (1-c) to rotate, thereby pushing the tension loading lead screw nut (1-d) to move forward and backward; the tension loading slide table (1-b) is fixed on the tension loading lead screw nut (1-d) and can slide on the top surface of the tension loading support table (1-h) in the axial direction; the hydraulic cylinder sleeve (1-a) is axially arranged on the tension loading slide table (1-b), the tension loading roller (1-f) is provided on the top end of the loading hydraulic cylinder piston rod (1-e), the rim of the tension loading roller (1-f) is provided with a groove, and the tension loading friction liner (1-g) is mounted in the groove and provided with a rope groove;
the motor driving device (2) comprises a motor lead screw nut (2-a), a main motor slide table (2-b), motor positioning bolts (2-c), a two-way motor (2-d), a main motor shaft (2-e), a main motor roller (2-f), motor clamping bolts (2-g), a motor friction liner (2-h), an auxiliary motor roller (2-i), an auxiliary motor slide table (2-j), motor clamping nuts (2-k), a motor lead screw (2-1), a motor support base (2-m), a motor support table (2-n) and a motor hand wheel (2-o); the motor support table (2-n) is arranged on the motor support base (2-m), the motor lead screw (2-1), the motor lead screw nut (2-a) and the motor hand wheel (2-o) are coaxially arranged, and the motor hand wheel (2-o) rotates to drive the motor lead screw (2-1) to rotate, thereby pushing the motor lead screw nut (2-a) to move forward and backward; the main motor slide table (2-b) is fixed to the motor lead screw nut (2-a) and can slide on the top surface of the motor support table (2-n) in the axial direction; the two-way motor (2-d) and the main motor roller (2-f) are coaxially fixed on the main motor slide table (2-b) by the motor positioning bolts (2-c), and the two-way motor (2-d) drives the main motor roller (2-f) to rotate synchronously; the auxiliary motor slide table (2-j) is arranged on the top surface of the motor support table (2-n), the auxiliary motor roller (2-i) is provided on the auxiliary motor slide table (2-j), and the axial centers of the main motor roller (2-f) and the auxiliary motor roller (2-i) are in the same line; the main motor slide table (2-b) and the auxiliary motor slide table (2-j) are respectively provided with collinear through-holes on both sides, the motor clamping bolts (2-g) penetrate through the through-holes from one end to connect the main motor slide table (2-b) and the auxiliary motor slide table (2-j), and are tightened up at the other end by means of the motor clamping nuts (2-k), so that the main motor roller (2-f) and the auxiliary motor roller (2-i) can clamp the annular steel wire rope (5) under the action of extrusion force; the rims of the main motor roller (2-f) and the auxiliary motor roller (2-i) are provided with a groove respectively, and the motor friction liner (2-h) is arranged in the groove and provided with a rope groove; the detour wheel positioning device (3) comprises a detour wheel support table (3-a), a detour wheel lead screw (3-b), a detour wheel lead screw nut (3-c), a detour wheel slide table (3-d), a detour wheel roller (3-e), a detour wheel friction liner (3-f), a detour wheel support base (3-g) and a detour wheel hand wheel (3-h); the detour wheel support table (3-a) is arranged on the detour wheel support base (3-g), the detour wheel lead screw (3-b), the detour wheel lead screw nut (3-c) and the detour wheel hand wheel (3-h) are coaxially arranged, and the detour wheel hand wheel (3-h) rotates to drive the detour wheel lead screw (3-b) to rotate, thereby pushing the detour wheel lead screw nut (3-c) to move forward and backward; the detour wheel slide table (3-d) is fixed on the detour wheel lead screw nut (3-c) and can slide on the top surface of the detour wheel support table (3-a) in the axial direction; the detour wheel roller (3-e) is arranged on the detour wheel slide table (3-d), and the axis of the detour wheel roller (3-e) is orthogonal to the axis of the detour wheel lead screw (3-b); the rim of the detour wheel roller (3-e) is provided with a groove, and the detour wheel friction liner (3-f) is arranged in the groove and provided with a rope groove; the driving wheel positioning device (6) comprises a driving wheel positioning support table (6-a), a two-way hydraulic pump (6-b), a driving wheel positioning lead screw (6-c), a driving wheel positioning support base (6-d), hydraulic pump positioning bolts (6-e), a main hydraulic pump shaft (6-f), a main driving wheel positioning roller (6-g), a main driving wheel positioning slide table (6-h), a driving wheel positioning friction liner (6-i), driving wheel clamping bolts (6-j), an auxiliary driving wheel positioning roller (6-k), an auxiliary driving wheel positioning slide table (6-1), a driving wheel positioning lead screw nut (6-m), driving wheel clamping nuts (6-n) and a driving wheel positioning hand wheel (6-o); the driving wheel positioning support table (6-a) is arranged on the driving wheel positioning support base (6-d), the driving wheel positioning lead screw (6-c), the driving wheel positioning lead screw nut (6-m) and the driving wheel positioning hand wheel (6-o) are coaxially arranged, and the driving wheel positioning hand wheel (6-o) rotates to drive the driving wheel positioning lead screw (6-c) to rotate, thereby pushing the driving wheel positioning lead screw nut (6-m) to move forward and backward; the main driving wheel positioning slide table (6-h) is fixed on the driving wheel positioning lead screw nut (6-m) and can slide on the top surface of the driving wheel positioning support table (6-a) in the axial direction; the two-way hydraulic pump (6-b) and the main driving wheel positioning roller (6-g) are coaxially fixed on the main driving wheel positioning slide table (6-h) by the hydraulic pump positioning bolts (6-e), and the main driving wheel positioning roller (6-g) drives the main hydraulic pump shaft (6-f) to rotate synchronously; the auxiliary driving wheel positioning slide table (6-1) is arranged on the top surface of the driving wheel positioning support table (6-a), the auxiliary driving wheel positioning roller (6-k) is arranged on the auxiliary driving wheel positioning slide table (6-1), and the axises of the main driving wheel positioning roller (6-g) and the auxiliary driving wheel positioning roller (6-k) are in the same line; the main driving wheel positioning slide table (6-h) and the auxiliary driving wheel positioning slide table (6-1) are respectively provided with collinear through-holes in both sides, and the driving wheel clamping bolts (6-j) penetrate through the through-holes from one end to connect the main driving wheel positioning slide table (6-h) and the auxiliary driving wheel positioning slide table (6-1), and are tightened up at the other end by means of the driving wheel clamping nuts (6-n), so that the main driving wheel positioning roller (6-g) and the auxiliary driving wheel positioning roller (6-k) can clamp the tested annular steel wire rope (5) under the action of extrusion force; the rims of the main driving wheel positioning roller (6-g) and the auxiliary driving wheel positioning roller (6-k) are provided with a groove respectively, the driving wheel positioning friction liner (6-i) is mounted in the groove and provided with a rope groove.
2. The device for testing the bearing capacity of a mining annular steel wire rope according to claim 1, characterized in that, the number of the driving wheel positioning devices (6) and the detour wheel positioning devices (3) depends on the winding radius and testing accuracy of the tested annular steel wire rope (5).
3. A testing method of the device for testing the bearing capacity of a mining annular steel wire rope according to claim 1, characterized in that, comprising the following steps:
(a) mounting the tension loading support table (1-h) on the tension loading support base (1-i), mounting the tension loading lead screw (1-c), the tension loading lead screw nut (1-d) and the tension loading hand wheel (1-j) coaxially, fixing the tension loading slide table (1-b) on the tension loading lead screw nut (1-d), arranging the hydraulic cylinder sleeve (1-a) on the tension loading slide table (1-b) in the axial direction, mounting the tension loading friction liner (1-g) in the groove of the tension loading roller (1-f), and mounting the tension loading roller (1-f) on the top end of the loading hydraulic cylinder piston rod (1-e), so as to be assembled as the steel wire rope loading device (1);
(b) mounting the motor support table (2-n) on the motor support base (2-m), mounting the motor lead screw (2-1), the motor lead screw nut (2-a) and the motor hand wheel (2-o) coaxially, mounting the motor friction liner (2-h) in the rim grooves of the main motor roller (2-f) and the auxiliary motor roller (2-i), fixing the two-way motor (2-d) and the main motor roller (2-f) coaxially to the main motor slide table (2-b) by the motor positioning bolts (2-c), mounting the auxiliary motor roller (2-i) on the auxiliary motor slide table (2-j), connecting the main motor slide table (2-b) and the auxiliary motor slide table (2-j) together by penetrating the motor clamping bolts (2-g) through the through-holes from one end of the slide table, and fixing the main motor slide table (2-b) and the auxiliary motor slide table (2-j) at the other end of the slide table by the motor clamping nuts (2-k), so as to be assembled as the motor driving device (2);
(c) mounting the detour wheel support table (3-a) on the detour wheel support base (3-g), mounting the detour wheel lead screw (3-b), the detour wheel lead screw nut (3-c) and the detour wheel hand wheel (3-h) coaxially, fixing the detour wheel slide table (3-d) to the detour wheel lead screw nut (3-c), mounting the detour wheel roller (3-e) on the detour wheel slide table (3-d) so that the axis of the detour wheel roller (3-e) is orthogonal to the axis of the detour wheel lead screw (3-b), and mounting the detour wheel friction liner (3-f) in the rim groove of the detour wheel roller (3-e), so as to be assembled as the detour wheel positioning device (3); (d) mounting the driving wheel positioning support table (6-a) on the driving wheel positioning support base (6-d), mounting the driving wheel positioning lead screw (6-c), the driving wheel positioning lead screw nut (6-m) and the driving wheel positioning hand wheel (6-o) coaxially, fixing the main driving wheel positioning slide table (6-h) to the driving wheel positioning lead screw nut (6-m), mounting the driving wheel positioning friction liner (6-i) in the rim grooves of the main driving wheel positioning roller (6-g) and the auxiliary driving wheel positioning roller (6-k), fixing the two-way hydraulic pump (6-b) and the main driving wheel positioning roller (6-g) coaxially on the main driving wheel positioning slide table (6-h) by the hydraulic pump positioning bolts (6-e), mounting the auxiliary driving wheel positioning roller (6-k) on the auxiliary driving wheel positioning slide table (6-1), connecting the main driving wheel positioning slide table (6-h) and the auxiliary driving wheel positioning slide table (6-1) by penetrating the driving wheel clamping bolts (6-j) through the through-holes from one end of the slide table, and fixing the main driving wheel positioning slide table (6-h) and the auxiliary driving wheel positioning slide table (6-1) at the other end of the slide table by the driving wheel clamping nuts (6-n), so as to be assembled as the driving wheel positioning device (6); (e) setting the number of positioning holes (4-a) of the positioning platform (4) on the basis of the winding diameter D and 1800 wrapping angle of the tested annular steel wire rope (5), mounting a steel wire rope loading device (1) at the middle position of the left-side arc section of the positioning platform (4) in the horizontal direction, mounting a motor driving device (2) on the left-side arc section of the positioning platform (4) at the upper side and lower side of the steel wire rope loading device (1) in the radial direction respectively, and mounting a plurality of detour wheel positioning devices (3) on the left-side arc section of the positioning platform (4) beside the upper and lower motor driving devices (2) in the radial direction respectively; at the same time, mounting a plurality of driving wheel positioning devices (6) on the right-side arc section of the positioning platform (4) in the radial direction; (f) rotating the tension loading hand wheel (1-j) to push the tension loading lead screw nut (1-d) to move forward and backward, rotating the motor hand wheel (2-o) to push the motor lead screw nut (2-a) to move forward and backward, rotating the detour wheel hand wheel (3-h) to push the detour wheel lead screw nut (3-c) to move forward and backward, and rotating the driving wheel positioning hand wheel (6-o) to push the driving wheel positioning lead screw nut (6-m) to move forward and backward, so that the diameter of the arc enclosed by the rims of the tension loading roller (1-f), the main motor roller (2-f) and the detour wheel roller (3-e) on the left side of the positioning platform (4) is equal to the winding diameter D and the angle of the arc is equal to the wrapping angle of 180°, and the diameter of the arc enclosed by the rim of the main driving wheel positioning roller (6-g) on the right side is equal to the winding diameter D and the angle of the arc is equal to the wrapping angle of 180;
(g) rotating the tension loading hand wheel (1-j) to push the tension loading lead screw nut (1-d) to retract, embedding the tested annular steel wire rope (5) into the rope grooves of the tension loading friction liner (1-g), the motor friction liner (2-h), the detour wheel friction liner (3-f) and the driving wheel positioning friction liner (6-i), rotating the tension loading hand wheel (1-j) to push the tension loading lead screw nut (1-d) to extend until the tension loading roller (1-f) presses the tested annular steel wire rope (5) for pretensioning, tightening up the motor clamping nuts (2-k) and the driving wheel clamping nuts (6-n) so that the motor friction liner (2-h) and the driving wheel positioning friction liner (6-i) can tightly clamp the annular steel wire rope (5) and cannot slide with respect to the annular steel wire rope (5);
(h) adjusting the oil pressure at the oil outlet of the loading hydraulic cylinder and the oil pressure at the oil inlets of the two two-way motors (2-d) to simulate the load at the slack
wireropeside FakWres de and the load at the tensioned wire rope side FsionedWreSde
at both sides of the driving wheel of the annular steel wire rope (5):
- FHdraul i c O/I i nder 2M F ack Wre S de 2 cos(8) r
Flensi oned Wr e S de Hydraulic Oylinder +
2 2cos(fl) r
Where, FH/draul i c O/I i under is the pressure exerted by the tension loading roller (1-f) on the
annular steel wire rope (5), M is the output torque of the two-way motor (2-d), r is the
radius of the main motor roller (2-f), and # is the included angle between a line
connecting the axial centers of the tension loading roller (1-f) and the main motor roller (2-f) and the horizontal direction,
simulating the tangential force distribution of the driving wheel of the tested annular steel wire rope (5) within the range of the wrapping angle of 180:
L 2 FS ack Wre S dee O O:aR fe = BD (0 aR O07c
Where, 0 is the circumferential coordinate with the separation point between the steel wire rope and the friction wheel at the driving side as the origin and the counter-clockwise direction as the positive direction, B is the width of the actual friction liner of the hoister,
p is the friction coefficient of the actual friction liner, and
=lnl(FnsoedWese ak W/eF d) aR Tensi owned Wre si de S ack Wre 9 de is the creeping arc angle in the wrapped arc under the action of FTensi oed Wr e9 de and F kWreS de so the tangential forces ff2,13'14',ff7 of the main driving wheel positioning roller
(6-g) of the tested annular steel wire rope (5) on the right side of the positioning platform (4) are botained, and based on the above, the oil pressure at the oil discharge port of the two-way hydraulic pump (6-b) is further adjusted, thereby providing additional rotational damping to the main driving wheel positioning roller (6-g):
rk =FTensi f + oned Wr e 9 de -F f3+ f4+ f5 + f6 + f ack Wre S de
M = kfIr,M 2 = kf2r,M3 = kf3r,M4 = kf4r,M5 = kf5r,M6 - kf6r,M7 = kf7r
Where, M 1 ,M2 ,M3 ,M4 ,M 5 ,M6 ,M 7 are the simulated loading torques at the two-way
hydraulic pumps (6-b), k is a compensation coefficient, and r is the radius of the main driving wheel positioning roller (6-g), and
FTsiondWr eSd=kfkf 2 kf 3 kf 4 5kf kf 6 kf 7 +FackWr eSde when the two-way
motor (2-d) drives the tested annular steel wire rope (5) to rotate circularly,
so a winding process of the driving wheel of the actual annular steel wire rope in an endless rope transportation system and a creeping process of the steel wire rope in the wrapped arc in the winding process are simulated.
4. The method for testing the bearing capacity of a mining annular steel wire rope according to claim 3, characterized in that,
to test the tensile property of the annular steel wire rope, the oil pressure at the oil outlet of the loading hydraulic cylinder, the oil pressure at the oil inlet of the two-way motor (2-d) and the oil pressure at the oil discharge port of the two-way hydraulic pump (6-b) are adjusted to simulate working conditions of overload and wire rope locking in the winding process of the tested annular steel wire rope (5), the loading hydraulic cylinder, the two-way hydraulic pump (6-b) and the two-way motor (2-d) are started sequentially, and whether the tested annular steel wire rope (5) meets the tensile property requirement is detected by detecting whether the variation of the diameter of the tested annular steel wire rope (5) is within an allowable threshold;
to test the fatigue life of the annular steel wire rope, the oil pressure at the oil outlet of the loading hydraulic cylinder, the oil pressure at the oil inlet of the two-way motor (2-d) and the oil pressure at the oil discharge port of the two-way hydraulic pump (6-b) are adjusted to simulate the winding process of the driving wheel of the endless rope transportation system, the tested annular steel wire rope (5) is towed circularly, and whether the tested annular steel wire rope (5) meets the load-bearing fatigue life requirement is tested by detecting whether the broken wire percentage and the diameter variation of the tested annular steel wire rope (5) are within allowable thresholds in the circular operation period; besides, since there is no actual restriction on the transportation of the endless rope transportation system, the testing process can be accelerated to a greater extent by adjusting the flow rates of the two-way motor (2-d) and the two-way hydraulic pump (6-b).
AU2019357072A 2018-10-10 2019-02-22 Device and method for testing bearing property of mining annular steel wire rope Active AU2019357072B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201811177231.4 2018-10-10
CN201811177231.4A CN109115615B (en) 2018-10-10 2018-10-10 Mining annular wire rope load-carrying properties test device and method
PCT/CN2019/075869 WO2020073581A1 (en) 2018-10-10 2019-02-22 Device and method for testing bearing property of mining annular steel wire rope

Publications (2)

Publication Number Publication Date
AU2019357072A1 AU2019357072A1 (en) 2020-05-14
AU2019357072B2 true AU2019357072B2 (en) 2020-10-29

Family

ID=64857610

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2019357072A Active AU2019357072B2 (en) 2018-10-10 2019-02-22 Device and method for testing bearing property of mining annular steel wire rope

Country Status (3)

Country Link
CN (1) CN109115615B (en)
AU (1) AU2019357072B2 (en)
WO (1) WO2020073581A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109115615B (en) * 2018-10-10 2019-12-03 中国矿业大学 Mining annular wire rope load-carrying properties test device and method
CN111442989B (en) * 2020-05-18 2023-01-10 香港理工大学 Three-dimensional dynamic fabric tension and pressure testing device and testing method
CN112304742A (en) * 2020-11-13 2021-02-02 长春工业大学 Flexible parallel mechanism test device based on rope drive
CN113587786B (en) * 2021-08-03 2023-09-05 徐劲梅 Wall, top surface, ground alignment positioning auxiliary device
CN114111694B (en) * 2021-10-13 2024-01-26 四川省公路规划勘察设计研究院有限公司 Anti-slide pile deformation monitoring device and failure early warning system
CN114985501B (en) * 2022-08-01 2022-10-21 天津赛象科技股份有限公司 Multi-specification steel wire ring processing production line
CN115783955A (en) * 2022-12-15 2023-03-14 洛阳宏信重型机械有限公司 Slope top reversing reducing wheel for steel wire rope lifting system
CN115931597B (en) * 2023-03-09 2023-06-09 中国民用航空飞行学院 A quick detection device for aviation cable detects
CN116213608B (en) * 2023-05-05 2023-07-07 衡水市橡胶总厂有限公司 Processing equipment and method for steel wire ropes after looping

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7021510B2 (en) * 2004-02-12 2006-04-04 David Irwin Ellingson Cable traction apparatus and method
CN202330166U (en) * 2011-12-05 2012-07-11 山东瀚邦胶带有限公司 Device for testing carrying capacity of mining conveying belt
CN104007016A (en) * 2014-05-13 2014-08-27 深圳市瑞格尔仪器有限公司 Electro-hydraulic servo horizontal tensile testing machine
CN204101398U (en) * 2014-11-01 2015-01-14 青岛科技大学 A kind of detection steel rope abrasion experimental provision
CN204346837U (en) * 2015-01-16 2015-05-20 济宁市产品质量监督检验所 Continuous rope quality comprehensive measurement mechanism
CN105043885B (en) * 2015-08-28 2019-01-11 中国水利水电夹江水工机械有限公司 A kind of reel stress test device and its method
CN106769422B (en) * 2017-03-15 2023-05-23 上海航空材料结构检测股份有限公司 Circumferential distributed high-flux durable creep testing machine
CN109115615B (en) * 2018-10-10 2019-12-03 中国矿业大学 Mining annular wire rope load-carrying properties test device and method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
AU2019357072A1 (en) 2020-05-14
WO2020073581A1 (en) 2020-04-16
CN109115615B (en) 2019-12-03
CN109115615A (en) 2019-01-01

Similar Documents

Publication Publication Date Title
AU2019357072B2 (en) Device and method for testing bearing property of mining annular steel wire rope
CA3115559C (en) Device and method for testing load-carrying properties of wire rope for friction hoist
AU2019357558B2 (en) Endless-rope-type vertical shaft lifting joint debugging and testing apparatus and method
US10989695B2 (en) Online monitoring system for crack on hoist spindle and operation method thereof
US11279601B2 (en) Hoisting and tensioning bearing saver
EP3679275B1 (en) High reduction belt-driven linear actuator
AU2019356608B2 (en) Pulley block type vertical well hoisting joint-test device and method
CN106644459A (en) Sprocket fatigue test tester and test method
CN103803439A (en) Steel wire rope winding device
WO2020073578A1 (en) Device for testing bearing performance of vertical shaft lifting spindle device
CN111005321B (en) Assembled bridge building butt-joint equipment
CN111559714B (en) Multidirectional rotary guide wheel structure
US20160097246A1 (en) Pipeline wrench
CN213387172U (en) Special electric cable loading and unloading device for geophysical logging
CN113280958A (en) Cable clamping device anti-skid force testing device
CN209721441U (en) A kind of multi-directional rotation Guiding wheel structure
Skarbøvik et al. Experimental investigation of stresses in winch drums subjected to multilayer spooling loads from synthetic fibre ropes
CN215217890U (en) Cable clamping device anti-skid force testing device
CN109264525B (en) Joint debugging testing device and method for derrick type vertical shaft elevator
Cutler et al. Cable bend testing over a variable diameter sheave
Bellamy et al. An Investigation into Flange Forces in Winch Drums
CN217878302U (en) Fatigue test device for crane lifting system
CN106144918A (en) The multistage euphroe that a kind of amplitude variation trolley is special
KR101311439B1 (en) Electric wire exchange method to use this and winding machine for wiring
CN111170192B (en) Pneumatic rescue winch steel cable maintenance device and calibration and working method thereof

Legal Events

Date Code Title Description
FGA Letters patent sealed or granted (standard patent)