The Influence to Mine Hoisting SteelWire Rope Tension and Deformation from Velocity and Acceleration

Wang, Chenming; Wang, Jisheng; Du, Bo; Fang, Litao; Zhang, Shengli

doi:10.12783/dtcse/icmsie2016/6345

Cited by 3 publications

(4 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Changing the value of acceleration and velocity in the lifting process, variation rule of rope tension and deformation in the lifting process, the influence on tension and deformation and vibration frequency from acceleration and velocity are subject to [25,26].…”

Section: Introductionmentioning

confidence: 99%

Experience of the Crane Steel Wire Ropes Non-Destructive Tests

Peterka¹,

Krešák²,

Vojtko³

2018

Adv. Sci. Technol. Res. J.

View full text Add to dashboard Cite

The non-destructive tests (NDT) of the steel wire ropes put on the crane pulley blocks comprise more than a half of our NDT services. The intensive utilization of cranes often leads to critical situations endangering health and safety at work. The operators are forced to provide safety use of the cranes due to new cranes constructions, new construction of the block pulley and put on the new steel wire rope constructions. The NDT tests of the crane steel wire ropes are coordinate by the Standard ISO 4309. We have experienced only the crane steel wire ropes with an individual wire rope core during our NDT tests so far. The visual NDT test usually used is ineffective to the steel wire ropes with this construction. Based on our previous experience it can be confirmed that surface ruptures are produced after the disintegration of wires inside of a rope; it often leads to the rope abruption during its operation. The reduction of the pulley block dimensions often leads to the problem of the multi-axis rope bending. This kind of the rope line in the pulley block causes the increase of the fretting fatigue of the wires and the rope strands. The same type of the stress is created when the dead ends of the rope are badly constructed.

show abstract

Section: Introductionmentioning

confidence: 99%

Experience of the Crane Steel Wire Ropes Non-Destructive Tests

Peterka¹,

Krešák²,

Vojtko³

2018

Adv. Sci. Technol. Res. J.

View full text Add to dashboard Cite

show abstract

“…The change of the value of acceleration and velocity in the lifting process, get variation rule of rope tension and deformation in the lifting process, study the influence to tension and deformation and vibration frequency from acceleration and velocity [23,24].…”

Section: Introductionmentioning

confidence: 99%

The Causes of the Damage to the Bearing Rope – The Failureanalysis

Peterka¹,

Krešák²

2018

Adv. Sci. Technol. Res. J.

View full text Add to dashboard Cite

In our laboratory we quite often experience problems with the operation of steel ropes. There is a range of causes related to lifetime problems of ropes. These problems are related to poor quality of input material used for wire production, mixing of different wire strengths in the rope construction, improper roping of the rope into the hoist system, improper rope operation, improper rope design for a particular type of operation as well as unfair practices of vendors. The subject of the article is the analysis of the rope showing the combination of a large number of the above factors leading to the damage of the rope. During the operation of the cargo cableway, the hauling ropes were damaged in a very short time. The Z wires from the surface layer of the rope started to release from the rope. Subsequently, the wires were unwinding from the layer, they created visible protuberant waves, they were braking and dropping out from the rope. The hauling rope had to be replaced. Than the samples were taken from the rope in order to find out the cause of the rope damage. Mechanical, metallographic and fractographic measurements were performed on the rope. The metallographic and fractographic measurements revealed the material defects of the wires of the rope caused during manufacturing of the Z wires from the surface layer of the hauling rope. The mechanical tests revealed differences in the tensile strength grade the operator required compering to the tensile strength grade the vendor declared. The above mentioned problems unambiguously show that it is appropriate to introduce a mechanical control of the rope properties in advance to its deployment. Checks must be performed by an independent testing laboratory. This procedure overprices inputs needed for the rope replacement. On the other hand, it can reduce the costs when a poor quality rope is deployed. Some of our customers have already adopted this approach. It helped to the increase in the safety of the operation of the mechanisms and it eliminated the problems with exchange and climes on bad quality ropes.

show abstract

“…In articles [1,2] the analytical expressions of maximum loads in rope in different operation conditions were obtained. In many articles numerical simulation was used [3,4]. It has been stated that rope tension is the function of a machine movement regime [4] and machine parameters [5] (some of them may be non-linear [6]).…”

mentioning

confidence: 99%

“…Researchers in the mentioned works used mathematical models which are based on ordinary [3] and partial [1] differential equations.…”

mentioning

confidence: 99%

Regime-parametric optimization of a mine winder deceleration

Ловейкін¹,

Romasevych²

2018

SBNMU

View full text Add to dashboard Cite

Purpose. Improving mine winder operation efficiency during deceleration of the final cargo lowering due regimeparametric optimization and study the obtained results with dynamic and energy indicators. Methodology. In order to carry out the regime-parametric optimization of the mine winder deceleration mode the direct Euler's variational and differential evolution methods have been used. In order to study the approximate solution of the variational problem the mathematical modeling and integration of differential equations methods were used. findings. It was established that in comparison with rational laws of the mine winder deceleration using the optimum torque law reduces unwanted dynamic loads in the rope up to 28.4 %, and in the coupling by 15.4...82.7 %. In this case, the oscillations of the drive and the final cargo at the end of deceleration do not exist. In aggregate, it allows increasing the reliability of the mine winder. The optimal value of the reduced coefficient of coupling stiffness of the mine winder actuator has been established. Originality. The formulation of an optimization problem has been carried out. The complex terminal-integral criterion has been chosen. It was shown that in the formulation of the problem it is necessary to introduce the extra boundary conditions for achieving the absolute minimums of the terminal criteria. In order to find an approximate solution to the mine winder deceleration mode optimization problem, sampling of the problem was carried out. The solution of the problem was found on a set, which is the conjunction of two domains: the dynamic parameters of the mine winder and its modes of motion. Practical value. The calculated optimal deceleration mode of the machine may be implemented with the frequencycontrolled drive, which allows increasing the efficiency of the mine winder operation in terms of dynamic indicators.

show abstract

The Influence to Mine Hoisting SteelWire Rope Tension and Deformation from Velocity and Acceleration

Cited by 3 publications

References 4 publications

Experience of the Crane Steel Wire Ropes Non-Destructive Tests

Experience of the Crane Steel Wire Ropes Non-Destructive Tests

The Causes of the Damage to the Bearing Rope – The Failureanalysis

Regime-parametric optimization of a mine winder deceleration

Contact Info

Product

Resources

About