CN106404541B - Device for measuring dynamic deflection performance of rope core of steel wire rope - Google Patents
Device for measuring dynamic deflection performance of rope core of steel wire rope Download PDFInfo
- Publication number
- CN106404541B CN106404541B CN201611081010.8A CN201611081010A CN106404541B CN 106404541 B CN106404541 B CN 106404541B CN 201611081010 A CN201611081010 A CN 201611081010A CN 106404541 B CN106404541 B CN 106404541B
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- rope
- steel wire
- hydraulic cylinder
- wire rope
- rope core
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- 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
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- 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
- G01N3/14—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by dead weight, e.g. pendulum; generated by springs tension
-
- 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
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
-
- 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
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
-
- 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
- G01N3/56—Investigating resistance to wear or abrasion
-
- 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
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- 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
- G01N2203/0026—Combination of several types of applied forces
-
- 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
- G01N2203/0075—Strain-stress relations or elastic constants
-
- 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
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- 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)
- Ropes Or Cables (AREA)
Abstract
The invention discloses a device for measuring dynamic flexibility of a rope core of a steel wire rope. The device comprises a frame, a guide wheel arranged at the top of the frame, a hydraulic cylinder arranged on an upright post at one side of the frame in a vertical arrangement mode, and a test wheel arranged below the hydraulic cylinder; the hydraulic cylinder is a constant-speed equal-stroke type double-piston-rod hydraulic cylinder; one end of a rope core of the tested steel wire rope is connected with the lower end of the hydraulic cylinder, the other end of the rope core of the tested steel wire rope is connected with one end of the transmission steel wire rope after passing through a test wheel arranged below the hydraulic cylinder, and the other end of the steel wire rope is fixedly connected with the weight after passing through a guide wheel; an upper travel switch and a lower travel switch are arranged on an upright column at the upper part of the installation position of the hydraulic cylinder, and a counter is arranged between the two travel switches. The invention can realize accurate and rapid measurement of dynamic deflection performance of the rope core, thereby evaluating quality of the rope core, providing basis for design, manufacture, use and detection of the rope core and avoiding fracture and accidents caused by rope core damage in the use process of the steel wire rope.
Description
Technical Field
The invention belongs to the technical field of steel wire rope core detection equipment, and mainly relates to a test device for measuring extrusion resistance, abrasion resistance, bending resistance and tensile resistance of a steel wire rope core under the dynamic deflection condition and evaluating the quality of the steel wire rope core.
Background
The steel wire rope is formed by arranging and combining steel wires, strands and rope cores according to design rules. The rope core mainly supports the pressure of the outer layer strand rope, so that the original shape of the steel wire rope can be maintained when the steel wire rope is subjected to bending and load extrusion in the operation process; secondly, the rope core can store grease, and is used as a source of lubrication of the steel wire rope in the running process of the steel wire rope, so that the steel wire is well lubricated, the contact between the steel wire rope strands and between wires is improved, and the abrasion damage is relieved; meanwhile, as the steel wire rope can receive larger impact and extrusion load in the working process, after repeated impact and extrusion, the rope core has a tendency of becoming broken, and the broken rope core is exposed from the strand gaps to seriously influence the service life of the steel wire rope. Therefore, the quality of the rope core performance has a crucial effect on the use of the steel wire rope, and the performance of the rope core is tested, so that the performance of the rope core has an irreplaceable important effect and significance.
As an important index for detecting the performance of a rope core of a steel wire rope, the dynamic deflection test of the rope core can be used for simulating the extrusion and abrasion of steel wires and strands in the steel wire rope to the rope core when the steel wire rope slides over a pulley, so that the comprehensive performance of the rope core is visually and intuitively explained. However, at present, there is no suitable rope core dynamic flexibility testing device for performing a corresponding test, so a testing device for testing the dynamic flexibility of the rope core is designed and developed, the quality of the rope core is tested and evaluated, the design, manufacturing, use and detection basis is provided for the designer, manufacturer, user and detection mechanism of the rope core, the safety accident and quality accident caused by the damage of the rope core in the use process are avoided, and the creative effect is achieved.
Disclosure of Invention
The invention aims to provide a device for measuring the dynamic flexibility of a steel wire rope core, which aims to overcome the defects in the prior art. The device can be used for accurately, conveniently, rapidly and safely measuring the dynamic deflection performance of the rope core, thereby achieving the purpose of evaluating the quality of the rope core.
The test device provided by the invention is a relative performance comparison test of one material relative to another material or one structure relative to another structure, and can be used for measuring the dynamic flex life of the rope core after repeated cyclic loading until damage. The measuring principle of the invention is as follows: the rope core with proper length is arranged on a specially designed dynamic deflection testing machine, the surface of a rope groove of a test wheel contacted with the rope core is organically processed or welded with a cross vault rib of a reinforcing steel bar, one end of the rope core is added with a certain tension or a weight hung with a certain load, the other end of the rope core is fixed at the end part of a constant-speed equal-stroke double-piston-rod hydraulic cylinder (hereinafter referred to as a hydraulic cylinder), and the rope core repeatedly and circularly operates on a pulley at a certain speed so as to simulate the extrusion and abrasion of steel wires and strands to the rope core when a steel wire rope in practical application passes through the pulley, and the dynamic deflection fatigue life resistance of the rope core is checked.
The technical measures of the invention are as follows:
the device for measuring the dynamic deflection performance of the rope core of the steel wire rope comprises a frame, a guide wheel arranged at the top of the frame, a hydraulic cylinder arranged on an upright post at one side of the frame in a vertical arrangement manner, and a test wheel arranged below the hydraulic cylinder; the hydraulic cylinder is a constant-speed equal-stroke type double-piston-rod hydraulic cylinder; one end of a rope core of the tested steel wire rope is connected with the lower end of the hydraulic cylinder, the other end of the rope core of the tested steel wire rope is connected with one end of the transmission steel wire rope after passing through a test wheel arranged below the hydraulic cylinder, and the other end of the steel wire rope is fixedly connected with a weight after passing through a guide wheel; an upper travel switch and a lower travel switch are arranged on an upright column at the upper part of the installation position of the hydraulic cylinder, and a counter is arranged between the two travel switches.
The surface of the rope groove, which is contacted with the rope core, of the test wheel is provided with the crossed dome rib matched with the steel wire ply structure in the steel wire rope, wherein the crossed dome rib is used for simulating the extrusion and abrasion effects of the steel wire strand on the rope core when the steel wire rope slides through the pulley. The rope groove surface of the guide wheel is of a smooth arc groove structure or the same as the rope groove surface of the test wheel.
The working principle and the beneficial effects of the invention are as follows:
the device uses the hydraulic cylinder as a power source to drive the steel wire rope core to repeatedly and circularly move, the counter is used for automatically recording the number of times of the reciprocating movement of the rope core, the weight is used for simulating the loading load born by the rope core during the repeated circulation, and the surface of the rope groove contacted with the rope core of the test wheel is a crossed dome formed by machining or welding reinforcing steel bars so as to simulate the extrusion and abrasion of steel wires and strands in the steel wire rope to the rope core when the steel wire rope passes through the pulley. The device realizes the measurement of the dynamic deflection performance of the rope core, provides the basis for designing, manufacturing, using and detecting for designers, manufacturers, users and detecting mechanisms of the rope core, and avoids the steel wire rope from breaking and causing safety accidents and quality accidents due to the damage of the rope core in the using process.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the test wheel.
Fig. 3 is a side view of fig. 2.
Fig. 4 is a view in the direction a of fig. 3.
Fig. 5 is a B-B cross-sectional view of fig. 2.
Number in the figure: 1. the device comprises a hydraulic cylinder, 2, a counter, 3, a guide wheel, 4, a frame, 5, a rope core, 6, a test wheel, 7, a transmission steel wire rope, 8, weights, 9 and a travel switch.
Detailed Description
The invention will be further described with reference to the following examples (drawings):
as shown in fig. 1, the device for measuring the dynamic deflection performance of the rope core of the steel wire rope comprises a frame 4, a guide wheel 3 arranged at the top of the frame, a hydraulic cylinder 1 arranged on an upright column at one side of the frame in a vertical manner, and a test wheel 6 arranged below the hydraulic cylinder 1; the hydraulic cylinder 1 is a constant-speed equal-stroke type double-piston-rod hydraulic cylinder; one end of a rope core 5 of the tested steel wire rope is connected with the lower end of the hydraulic cylinder 1, the other end of the rope core is connected with one end of a transmission steel wire rope 7 after passing through a test wheel 6 arranged below the hydraulic cylinder 1, and the other end of the steel wire rope 7 is fixedly connected with a weight 8 after passing through a guide wheel 3; an upper travel switch 9 and a lower travel switch 9 are arranged on a column at the upper part of the installation position of the hydraulic cylinder 1, and a counter 2 is arranged between the two travel switches 9.
As shown in fig. 2, 3, 4 and 5, the test wheel 6 in the present invention is provided with cross domes on the surface of the rope groove contacting the rope core 5, which are matched with the steel wire ply structure in the steel wire rope for simulating the extrusion and abrasion effect of the steel wire strand on the rope core when the steel wire rope slides over the pulley.
The rope groove surface of the guide wheel 3 is of a smooth arc groove structure, and the structure which is the same as the rope groove surface of the test wheel 6 can also be adopted.
The operation and use method of the invention is as follows:
the hydraulic cylinder 1 can reciprocate, and is used for pulling the rope core 5 of the tested steel wire rope to reciprocate and plays a role in fixing the rope core; the counter 2 is used for automatically recording the number of times of the reciprocating motion of the rope core 5, the weight 8 is used for simulating the reciprocating cyclic loading load of the rope core 5, and the test wheel 6 is used for machining or welding crossed dome ribs of steel bars on the surface of the rope groove contacted with the rope core 5 so as to simulate the extrusion and abrasion of the rope core 5 by the steel wire strand when the steel wire rope slides through the pulley. When the invention is used, firstly, a rope core sample is arranged on a dynamic deflection testing machine according to the diagram shown in the figure 1, and a rope core 5 is firmly connected with a transmission steel wire rope 7 by a U-shaped rope clamp; after the height of the weight rack from the ground is adjusted, weights 8 with different masses are arranged, and the starting position of the test wheel 6 is adjusted to be a mark point (namely, the tangential point of the rope core 5 and the test wheel 6); switching on a power supply, setting test frequency, and resetting the counter 2; starting the testing machine, and repeatedly and circularly running the rope core 5 of the tested steel wire rope on the testing wheel 6; the test is continued until the rope core 5 breaks and the number of reciprocal cycles is recorded, or the breaking force is measured after the test is continued until the number of cycles is specified. The cycle times or breaking force are indexes for evaluating the dynamic flexing performance of the rope core.
Further, the diameter of the test wheel 6 in fig. 1 is used for simulating the diameters of steel wire ropes with different diameters, the weight 8 is used for simulating repeated cyclic loading loads of rope cores with different specifications, the crossed fornix ribs of the machined or welded steel bars on the surfaces of the rope grooves in fig. 2, 3, 4 and 5 are used for simulating the extrusion and abrasion modes of the steel wires and the strands in the steel wire ropes on the rope cores 5, and the simulation mode is obtained by combining the steel wires and the strands together. For steel wire ropes with more complex structures, higher strength levels, larger diameters and different surface states, test wheels with different sizes and internal steel bar surface crossed dome structures can be designed, or weights with different qualities can be adopted for simulation tests. Therefore, the accurate, reliable, effective, safe and quick measurement of the dynamic deflection performance of the special rope core is realized, and the current situation that no applicable rope core dynamic deflection performance testing device can be used for carrying out corresponding tests at present is effectively solved.
Claims (1)
1. The utility model provides a device of survey wire rope core dynamic deflection performance which characterized in that: the device comprises a frame (4), a guide wheel (3) arranged at the top of the frame, a hydraulic cylinder (1) arranged on an upright post at one side of the frame in a vertical arrangement manner, and a test wheel (6) arranged below the hydraulic cylinder (1); the hydraulic cylinder (1) is a constant-speed equal-stroke type double-piston-rod hydraulic cylinder; one end of a rope core (5) of the tested steel wire rope is connected with the lower end of the hydraulic cylinder (1), the other end of the rope core is connected with one end of a transmission steel wire rope (7) after passing through a test wheel (6) arranged below the hydraulic cylinder (1), and the other end of the steel wire rope (7) is fixedly connected with a weight (8) after passing through a guide wheel (3); an upper travel switch and a lower travel switch (9) are arranged on an upright column at the upper part of the installation position of the hydraulic cylinder (1), and a counter (2) is arranged between the two travel switches (9);
the rope groove surface of the guide wheel (3) is of a smooth arc groove structure or the same as the rope groove surface of the test wheel (6);
the surface of a rope groove, which is contacted with the rope core (5), of the test wheel (6) is provided with a cross dome rib matched with a steel wire stranding structure in the steel wire rope, wherein the cross dome rib is used for simulating the extrusion and abrasion effects of the steel wire strand on the rope core (5) when the steel wire rope slides through the pulley;
the operation method of the device comprises the following steps: the rope core (5) of the tested steel wire rope repeatedly and circularly runs on the test wheel (6); and continuously testing until the rope core (5) breaks and the reciprocating cycle times are recorded, or continuously testing until the specified cycle times are reached and then measuring the breaking force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611081010.8A CN106404541B (en) | 2016-11-30 | 2016-11-30 | Device for measuring dynamic deflection performance of rope core of steel wire rope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611081010.8A CN106404541B (en) | 2016-11-30 | 2016-11-30 | Device for measuring dynamic deflection performance of rope core of steel wire rope |
Publications (2)
| Publication Number | Publication Date |
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| CN106404541A CN106404541A (en) | 2017-02-15 |
| CN106404541B true CN106404541B (en) | 2023-09-22 |
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| CN201611081010.8A Active CN106404541B (en) | 2016-11-30 | 2016-11-30 | Device for measuring dynamic deflection performance of rope core of steel wire rope |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535117A (en) * | 2018-06-01 | 2018-09-14 | 浙江四兄绳业有限公司 | A kind of hawser abrasion and the combined testing machine that is broken |
| CN111855163A (en) * | 2019-04-19 | 2020-10-30 | 中国石油天然气股份有限公司 | Well testing steel wire fatigue simulation device and method |
| CN110346225A (en) * | 2019-08-14 | 2019-10-18 | 缪协兴 | A kind of anchor cable impact strength test system under supporting state |
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| CN106404541A (en) | 2017-02-15 |
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