VERIFICATION OF BRAKING MECHANISM OF HOISTING DEVICE BLIND SHAFT NO.11 OF THE MINING PLANT LONEA
Every extraction machine is endowed with a braking system while ensure the right movement of the hoisting vessels, or allows to stop the machine in a certain position of the vessels (brake tests) and the automatic brake device, independently of the operator will, in one of the following situation...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Academica Brancusi
2018-05-01
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| Series: | Fiabilitate şi Durabilitate |
| Subjects: | |
| Online Access: | http://www.utgjiu.ro/rev_mec/mecanica/pdf/2018-01/17_R%C4%83zvan%20Bogdan%20ITU,%20Vilhelm%20ITU%20-%20VERIFICATION%20OF%20BRAKING%20MECHANISM%20OF%20HOISTING%20DEVICE%20BLIND%20SHAFT%20NO.11%20OF%20THE%20MINING%20PLANT%20LONEA.pdf |
| Summary: | Every extraction machine is endowed with a braking system while ensure the right
movement of the hoisting vessels, or allows to stop the machine in a certain position of the vessels
(brake tests) and the automatic brake device, independently of the operator will, in one of the
following situations, considered to be perturbations or damages: tension absence, pressure drop
of the working fluid in the braking system circuit, the overraising of the extraction vessels,
exceeding the limit speed, overload etc. (safety–braking). Speed decrease made by the brake
system must be between 1,5–5 m/s2 and the delay length of the brake (from the action release till
the effective application) at the most 0,7 s. Constructively, the brake system consists of two
components: the working mechanism and the actuating system. Upon the working system, the
common brakes can be with disk or with shoes, and from the point of view of actuation, can be
with weights and, spring assembly, pneumatics, hydraulics and combined. Braking–mechanism
diagnosis for the mi-ning hoisting machines consists in establishing the real safety factors when
the safety–brake is applied and when operating brake is applied too. The experimental
measurements have been made at the Auxiliary Blind Shaft no.11 at Lonea Mining Plant in order
of examination and regulation the hoisting machine. |
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| ISSN: | 1844-640X 1844-640X |