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Full locked spiral ropes / track ropes

Number of slideName: Bruno Longatti 1

Lubrication and Re-lubrication

BonjourBuon giorno

Good morningGuten Morgen

Lubrication and Re-lubrication

The guests are happy and enjoy the excursion

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Have a look behind the curtain of theropeways and their ropes

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We do not feel happy and safe about this view!

Lubrication and Re-lubrication

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We do not feel happy and safe about this view!

Lubrication and Re-lubrication

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It is unsafe and very expensive!

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We do not feel happy and safe about this view!

Lubrication and Re-lubrication

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Topics

Introduction, Differences to stranded ropes

Lubrication (third body, manufacturing)

Re-lubrication

Specific rope areas

Hazards

Lubrication and Re-lubrication

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Differences to stranded ropes

All wires are bright

Locked ropes have z-shaped wires

Ropes don’t move, the cabins run onlyover a section of the hole rope length

Different fatigue over the rope length

Maintenance work only on the outer layer

A repair peace isn’t possible, only substitution ofsingle wires

Introduction

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Targets for lubrication

A steel wire rope needs to be lubricated:

to prolong its useful service life

reducing the coefficient of friction betweenthe wires and the layers

increasing the corrosion protection

reducing the rate of development of thenumbers of broken wires

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Lubrication (Third body)

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Dry friction

Mixed friction

Fluid friction

Contact surface betweentwo bodies (wires)

Manufacturer‘s lubrication

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full fillingof

each wire layer

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HazardsSoiling of the installation and the guests

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Track rope cleaningRemove the lubricant onthe tight rope before theinstallation goes in use!

Why re-lubricate

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the bright wires in the outer layer must be protectedagainst corrosion.

lubricant is consumed in- and outside the rope andmust be supplemented periodically once again!

increased friction and corrosion is to prevent atcontact points between rope and guiding element(saddle profile etc.)!

to build up a protective patina!

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«Ropes shall be discarded if their condition cannot, or can nolonger, be assessed with the current methods of inspection."

(Pkt. 5.2.1 EN 12927-6)

Attention

too much lubricant!

Only clean ropes are to re-lubricate

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With rotating brushes

Partial Complete circumference

AttentionNo mechanical damages on the wire surface.No heat that influence a reduction of the strength

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How to re-lubricateIn the stations

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spraying

brushing

Lubricant with solvent

How to re-lubricate

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On the free rope length

spraying

dropping

Lubricant with solventoroil

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roller

How to re-lubricate

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Spraying toolLubricant is spraying with spray nozzleson the rope surface.

Lubricant with solvent

AttentionNo or only a littlelubricant on thecontact surfacewith the roller

How to re-lubricate

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Drip lubricator

Lubricant with solventor oil

Attentioninfluence on the

roller liner

The subsequent lubricantdripping continuously orpilot-controlled on the rope surface

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0

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Qu

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tity

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ropediametermm

Nachschmiermittelmenge

30 g/m2

20 g/m2

10 g/m2

Principle: lower quantity, but more often!to much lubricant creates soiling!

Example:

50 mm rope diameter

30 g / m2 amount of lubricant

= 4.8 kg without solvent content

Quantity of lubricant

Frequency

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Influencing factorsEnvironment: higher temperature or/and humidity, salty air,

industrial emissions

Rope: surface of the wire, age, condition

Load: quantity / level

Frequency recommendations for track ropesin the first years twice a year (build up a protective layer onthe surface of bright wires)

after the first year, once a year

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How to re-lubricateConditions

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Re-Lubrication should be carried out only on dry ropes and bywarm weather.

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100Q

ua

nti

tyo

fe

va

po

rate

ds

olv

en

t%

Time h

Time for evaporation of solvents

at 20ºC with A3solvent

at 10ºC with A3solvent

at 20ºC with A2solvent

at 10ºC with A2solvent

Attention:If the subsequentlubricant withsolvent isresolved, theoperation may benot immediatelyresumed after arope lubrication!

Safety precautions

Employees, who are carryingout the re-lubrication needs:

safety belts, warm wear,helmet, hard-toed shoes,glasses, gloves, etc.

person who monitored theroute and can stop the cabin atany time!

….

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Lubrication of specific rope areasBollard

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Moisture =collapse the liners+ corrosion

Necessary:

rope maintenance (conservation)

weather protection

accessibility of appropriateinspections

Lubrication of specific rope areas

Reduction ofthe frictionbetween therope and thesaddle profile

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no slip-stick!

Fit support +

No constant moisture!Saddle 1

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Lubrication of specific rope areas

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Ovalisation of therope on the basisof increased shearforce of therollers.

Reverse bending'swith restrictedmovement of theouter wires.

Limited load +periodical adjustment !

Saddle 2

Lubrication of specific rope areas

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No constant moisture!Periodically lubrication +inspection!

Saddle 3

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Lubrication of specific rope areas

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Note: The lubricant must have goodpenetrate properties.

Roller chain

Attention

Permanent lubrication on bending points

Hazards

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Track rope break

• No solid lubricant

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We have different fatigue over the rope length

We need different type of lubricant

If one section of the rope achieve the discard

criteria's, the track rope has to be changed

The most track ropes are changed by corrosion or

local defaults (fatigue)

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Conclusion

Your effort with re-lubrication creates lower costs