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Configure the traction machine

Position the traction machine in the shaft or machine room, set its roping course and angle, and choose its performance data.

Written by Sabine Bunese

Prerequisites

  • A DigiPara Liftdesigner project is open, with the car frame, counterweight, and machine room already configured as needed.

Position the traction machine horizontally

Steps

  1. Determine the roping course.
    Changing this parameter influences the rotation of the gear in shaft. There are two options:
    - CWT - Traction Sheave - Car
    - Car - Traction Sheave - CWT

  2. Set gear alignment to a predefined reference plane.
    This aligns the gear base point to different X/Y reference planes:
    - Automatically
    - Rel. to the Shaft Base Point: shaft base point
    - Rel. to the Car Axis: car's center line axis
    - Rel. to the CWT Axis: counterweight's center line axis
    - Rel to the Left Car Guide Rail: base point of the left car guide rail
    - Rel. to the Right Car Guide Rail: base point of the right car guide rail
    - Rel. to the Left CWT Guide Rail: base point of the left counterweight guide rail
    - Rel. to the Right CWT Guide Rail: base point of the right counterweight guide rail

  3. Determine the delta value relative to the chosen plan.
    Set X-Position and Y-Position for additional movement of the gear machine in the x- and y-directions.

  4. Set the gear alignment relative to the traction pulley (optional).
    Setting the Location property within the Traction Machine Above group overwrites the Gear alignment parameter and positions the gear relativ to the traction pulley diameter in three different reference planes_
    - Aligned to car: aligns the gear machine relative to the car center.
    - Centered: aligns the gear machine centered between the car and counterweight axis.
    - Aligned to CWT: aligns the gear machine relative to the counterweight axis.

  5. Change the angle of the traction machine (optional).
    When the Gear alignment parameter isn't set to automatically, the Angle property can be manually set to adjust the gear rotation.

Result: The gear will be positioned according to the reference plane, delta and roping course combination.

Position the traction machine vertically

Steps

  1. Set reference plane.
    Choose the Z-plane base point:
    - Machine room: gear machine relative to the machine room floor.
    - Headroom: gear machine relative to the shaft headroom.
    - Pit: gear machine relative to the shaft pit.
    - Top Floor: gear machine relative to the top floor of the shaft.
    - Top Floor + Opening Height: gear machine relative to the shaft top floor plus the opening height.

  2. Set Reference plane location.
    Additional movement of the gear machine in the Z-direction
    ​

Result: The traction machine and its base will be placed with the displacement relative to the reference plane set.

NOTE: The following values are read-only, for reference: Height of the gear base, Distance between gear beams and gear base, Height of the gear beams, and Height of the machine bed.

Set the gear performance data

  1. Set the Performance to select a different performance data set for the current gear machine.

  2. The following values update automatically according to the performance tab selected: Gear ratio, R.P.M., Speed, and Drive sheave diameter.
    ​

Result: The traction sheave and the gear machine's performance values now match the performance data set you selected.

TIP: to change the traction sheave diameter, it's necessary to choose another gear performance tab first, as the diameter filter is set via this table.

Configure a machine room located beside the shaft

These properties apply only when the machine room is located beside the shaft.

  1. Set the deflection type.
    - Traction sheave inside the shaft: locates the traction sheave inside the shaft. If the selected gearing machine supports this option, the wall opening size, gearing machine position, and gear frame are all adapted automatically.
    - Use two deflection pulleys: standard arrangement. The gear frame with two deflection pulleys, and the traction sheave inside the machine room.

  2. Set the wall opening dimensions.
    Calculate the wall opening between the shaft and the machine room automatically or manually.

  3. Change the distance to wall.
    Set the distance between the deflection or traction sheave to the shaft wall the machine room is located at.

  4. Set Distance to center line — the distance between the pulley beam's center line and the car's center line.
    ​

Result: The traction sheave sits inside the shaft, or on the standard two-deflection-pulley arrangement, as selected — with the wall opening and the distances to the shaft wall and to the car's center line set accordingly.

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