ndt inspection of wire ropes for elevators
TRANSCRIPT
Experiences in the NdT control of elevator ropes
Eng. Bruno Vusini Eng. Daniel Rossi
AMC Instruments srl is an italian company, specialized in the field of NdT devices andservices, with more than 10 years of experience in this sector
Patented innovative solutions for the magneto inductive test of ropes used in Ropeways, Cranes, Elevators
CHALLENGE
Since 2008 AMC Instruments has performed an intensive work connected to the developmentof NdT devices dedicated to the field of elevators, by transporting its experience coming from other sectors such as the ropeways and industrial ones.
CHALLENGE
Requires coming from the field
More than 1 rope to test
Reduced distancebetween the ropes
Wide range of ropediameters
Reduced spaces and difficulty to access to
the ropes
Wide range of differentplants
Multi channelmeasuring head and acquisition system
Selectivity of the system
Flexibility in terms of diameter range
Very portable device
Easy to install
Kind of elevators Electric(traditional)
HydraulicMRL
Electric
Hydraulic
MRL
More than 1 rope
Low distances betweenropes
Wide range of diameters
Reduced space to perform the test
The detector must be very little in order to work in veryreduced spaces
Plant data:
Speed: 8 m/sN. of ropes: 6Ropes age: 4 yearsRopes diameter: 16 mmDistance between ropes: 40 mm
Example 1
Internal breaks
Example 1: Graph
Example 2
Plant data:
Speed: 0,7 m/sN. of ropes: 4Ropes age:18 yearsRopes diameter: 11 mmDistance between ropes: 20 mm
Example 2: Graph
Example 3: Comparison of tests performed during the year
Rope 1TEST 1 – 13/05/2016 TEST 2 – 22/09/2016
Rope 2TEST 1 – 13/05/2016 TEST 2 – 22/09/2016
Example 3: Comparison of tests performed during the year
Rope 3TEST 1 – 13/05/2016 TEST 2 – 22/09/2016
Example 3: Comparison of tests performed during the year
Example 4: MRL test
Example of installation
Fixing by textile ropes
COATED ROPES AND BELTS
In last years, new suspenction elements have been developed and used. In recent elevators itis possible to find polymeric coated ropes and belts, in which the classic visual control cannotbe performed
SOLUTION: MRT
BELTS
Up to 12 little metallic ropes inside a polymeric structure
AMC Instruments has developed a newsystem validated through hundreds of testsperformed around the world
COATED ROPES
Little diameter ropes (less than 7mm diameter) coated with polymeric material
Also in this case the visual control cannotbe performed. AMC has developed adevice that allows to test the ropes withthe MI method without to damage thecoating
PAST PRESENT and FUTURE