Ropeway Systems (Ch.1)

1. 1. The main/central component of a ski lift?

1.1. haul rope

1.2. drive motor/prime mover

2. 2. What supports the haul rope as it moves?

2.1. towers

2.2. sheave and sheave assemblies/line equipment

2.2.1. provide pathway for the rope moving over towers

3. 3. What makes the haul rope move?

3.1. drive bullwheel

3.1.1. provides power to move the haul rope

3.2. return BW

4. Terms

4.1. Long Splice

4.1.1. jopining the two ends together so that the join is hardly visible

4.2. Counterweight/hydralic cylinders

4.2.1. provide constant tension to the haul rope

4.3. Carriage

4.3.1. a frame that moves back to mantain proper tension on the haul rope as the rope experiences permanent stretch

4.4. Access lift

4.4.1. a lift that moves skiers from the base area uphill to the other lifts

4.4.2. Redundancy

4.4.2.1. to turn on AUX drive when PM is down

5. 4. What provides power to the drive bullwheel?

5.1. Drive motor provides force to turn the BW

5.2. Drive motor/Prime mover

5.2.1. electric motor OR diesel engine

6. 5. What happens if the prime mover breaks down? (2)

6.1. Evacuation drive - the back-up PM

6.1.1. cannot operate fully loaded at full speed all day

6.2. Auxiliary/Standby drive

6.2.1. usually, diesel engine - can operate the fully loaded lift at full speed

7. 6. How do I stop and start the motor.... and increase and decrease the speed? (2)

7.1. Drive Controls = electrical circuits

7.2. Normal storp

7.3. Emergency stop

8. 7. What happens if something goes wrong on the line - if the rope falls off a tower, for instance?

8.1. Drive controls are located between Terminals; they sense the problem -> shut down the lift

9. 8. How does the power supplied by the PM reach the BW?

9.1. Transmission system

9.1.1. Gearbox -> decrease speed, increase torque

9.2. HSS - couplings - LSS

10. 9. What stops the lift when a stop button is pushed or the safety circuit is activated?

10.1. PM shuts down and the brakes apply

10.2. Service Brake

10.2.1. HHS (acts on/applies on)

10.3. E-brake

10.3.1. BW

10.4. Anti-rollback brake

10.4.1. BW or haul rope

11. 10. What about the passengers - how are they carried up the mountain?

11.1. Carrier - pull skiers up the mountain

11.2. rope tows (bugel), handle tows, platter lifts, T-bars, chair lifts, gondolas, reversible tramways

11.3. Fixed grip VS detachable grip

12. 11. How do lift operators communicate with each other

12.1. voice or signal comm. system

13. 12. What provides power to the PM?

13.1. If electrical motor - >High Voltage circuit

13.2. If diesel engine -> fuel supply/storage capacity