omega - technical documentation manual

8/2/2019 Omega - Technical Documentation Manual

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A 4724 Neukirchen/W, Salling 8 Tel: 07278/3514-15, Fax: 07278/3514-12Email: [email protected] Mobil: 0664/3526190

TECHNICAL DOCUMENTATION

MEGAs t a i r l i f t

ttp://www.salvaescalerasyascensores.es/ http://www.creacionesvilber.com/


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Technical documentation

for stairlift type OMEGAEdition Dec. 2000

page 1 of 18

CONTENTS

1. MAIN FEATURES ........................................................................................................................................ 2

2. DESIGN....................................................................................................................................................... 3

2.1. System of transport .................................................................................................................................................................................. 32.1.1.Principle scheme ................................................................................................................................................................................... 32.1.2 Drive ....................................................................................................................................................................................................... 42.1.3 Wall controls ......................................................................................................................................................................................... 5

2.2 Length of drive ............................................................................................................................................................................................ 62.2.1 Railway tube.......................................................................................................................................................................................... 62.2.2 Horizontal railway................................................................................................................................................................................ 72.2.3 Negative bend........................................................................................................................................................................................ 72.2.4 Fixing the railway ................................................................................................................................................................................. 82.2.5 Stop positions........................................................................................................................................................................................ 9

2.3 Carriage performance ............................................................................................................................................................................112.3.1 Platform for wheelchair ..................................................................................................................................................................... 112.3.2 Carriage with seat performance ....................................................................................................................................................... 13

2.4. Safety features..........................................................................................................................................................................................142.4.1. Overspeed governor.......................................................................................................................................................................... 14

2.4.2. Barriers ................................................................................................................................................................................................ 152.4.3. Bypass switch..................................................................................................................................................................................... 172.4.4. Pressure-sensitive ramps.................................................................................................................................................................. 18



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page 2 of 18

1. MAIN FEATURES

X standard performance

O optional performance- not feasible

feature detail drive type S drive type K

railway bends X X

variation in gradient X X

gradients 0...65 X X

horizontal railway O O

negative bend O O

length up to 15 m X X

length up to 25 m - X

length over 30 m - O

speed from 4,5 cm/sec X X

to 15 cm/sec regulated O O

power 0,37 and 0,55 kW X O

0,75 kW O X

1,0 kW and more - Xvoltage 1 x 230 V O O

3 x 230 V O O

3 x 400 V X X

position of drive on the upper end of railway X X

somewhere far from the railway O X

set up area indoors X X

outdoors O O

carriage model stand-on platform X Xplatform for wheelchairs X X

platform / folding seat X X

platform size standard 800 x 1000 mm X X

optional size O O

load standard 150 kg X X

optional 225 kg O O

surface protection powder coated X X

hot galvanised O Ostainless steel O O



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page 3 of 18

2. Design

2.1. System of transport

2.1.1. Principle scheme

Illustration 1: simplified representation of drive unit

Tension rope: rope of 7 mm or 9 mm in diameterSleeves made of Aluminium are pressed onto the rope every 112mm. These sleeves are coated with synthetic balls which isolatethe rope from the tube as well as serve as the form-fitted power

transmission from the drive wheel.

Support rope: properties see tension rope

When using a 7mm rope, the plastic support parts are lined uploosely onto the rope. If the rope breaks, the plastic supports willform a solid cylinder between the overspeed governor (see page14) and the carriage, causing the carriage to stop. For longrailways (> 20 metres of railway) it is necessary to use a 9 mm(diameter) rope. On these railways, the plastic supports are

separated by aluminium cases (this also forms a solid cylinder).



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page 4 of 18

2.1.2 Drive

Illustration 2:drive type Svoltage: 3 x 400 Vpower: 0,37 0,55 kWThe drive can be mounted invarious positions.Installation area:- up to 15 metres of railway- up to four bends of 90oOptions:- regulated drive for higher speed

in plants with bends (reduction in speedon the bends)- alternate voltages(separate delivery of thecontrol cabinet)

Illustration 3:

drive type Kvoltage: 3 x 400 Vpower: 0,75 kW and moreinstallation area:- over 15 m in length- up to 8 bends of 90oOptions:- higher speed for complete drive area(only for straight railways)

- higher speed, reduced in bends- alternate voltages

Illustration 4:Support construction fordrive type K

Motor

500 300

1000

80

60



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page 5 of 18

2.1.3 Wall controls

Wall controls are normally located at all stop stations.They can be mounted under the plaster or on the surface of the wall.

Illustration 5:Wall control for manual platform- emergency stop, if exists- key switch- UP-Button- DOWN-Button

As soon as the platform is folded down, thewall controls are de-activated (exception:emergency stop)

Illustration 6:Wall control for automatic platform- emergency stop, if exists- key switch

- CLOSE Platform-Button- OPEN Platform-Button- UP-Button- DOWN-Button



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page 6 of 18

2.2 Length of drive

2.2.1 Railway tube

The carriage runs on a railway, existing of two parallel tubes, 50mm in diameter.

Illustration 7:Railway tubes

Illustration 8:

Pitched railway

Bows connecting the tubesare mounted every 500 to 700 mm.With the help of these bowsthe stairlift can be mounted onto thepillars or onto the wall.

Surface protection: powder coatedRAL 7035

Options: - other colours (RAL-Code)

- hot galvanised (for outdoor plants)- stainless performance

Upper

railway tube

Lower

railway tube



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page 7 of 18

2.2.2 Horizontal railway

Railway angles between 0 and 20 demand a horizontal railway. Foradditional stabilisation a special railway for horizontal drive is needed.A third stabilisation point is mounted on the carriage; a third tube onthe railway will take up the third point. The third point of the carriage isa guide-ball, mounted onto the back of the carriage.

Illustration 9: horizontal railway

2.2.3 Negative bend

Negative bends require a special carriage in order to avoid a clashbetween the platform and the wall. Often the rear edges of the platformmust be cut.

Illustration 10:Negative bend

As platform size increases, so doesthe need for additional space.Please note that when usinga smaller platform, thewheelchair could be larger than theplatform and therefore could touchthe wall.



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page 8 of 18

2.2.4 Fixing the railway

The bows connecting the railway tubes (Illustration 7) can be mounted either onpillars or on the wall. Special constructions are also possible.

Illustration 11: Illustration 12:Mounting on the wall. Mounting on pillars.

Pillar screwed onto the side of thestairs.

Illustration 13:Mounting on pillars.Pillar screwed onto the wallof the staircase.

Illustration 14: Illustration. 15:

Mounting on pillars. Mounting on pillars.Pillar screwed onto the steps. Pillars mounted in the well hole.



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page 9 of 18

2.2.5 stop positions

Illustration 16:

Typical position of stopsand drive unit.

Ground plan



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page 10 of 18

Illustration 17:Upper stop position(Illustration 16), stop at thetop step.

Illustration 18:Lower stop position(Illustration 16), stopat the bottom.

Illustration 19:Lower stop positionStop at the bottom with alarger distance to thelower step.

Illustration 20:Intermediate stop position(Illustration 16), stop at a

landing.



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page 11 of 18

2.3 Carriage performance

2.3.1 Platform for wheelchair

platform closed: C = 160 mm

size of platformL B750 700900 800

Illustration 20: standard performance of carriage

1 directional control 7 ramps2 emergency STOP 8 handle for folding the platform3 barriers4 rear wall

5 upper suspension for carriage6 lower suspension for carriage



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page 12 of 18

Illustration 21: standard performancewith folding seat and directional

control on spiral cable

9 armrest10 folding seat11 directional control with

emergency stop button12 spiral cable

Further options:- platform can be locked when folded up- load capacity up to 225 kg

- special colour for carriage painting- protective cover made of plastic for outdoor plants

We reserve the right to modify performance and measures.



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page 13 of 18

2.3.2 Carriage with seat performance

Illustration 22: standard performance of carriage

1 directional control 6 foot rest2 emergency STOP 7 rear wall3 armrest 8 upper suspension of carriage4 seat 9 lower suspension of carriage5 security pressure frame

optional: security pressure frame on the front side of the foot rest

seat and footrest folded up: A = about 165 mm



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page 14 of 18

2.4. Safety features

2.4.1. Overspeed governor

Performance of the overspeed governor:

During normal operation of the lift, the pendulum (catch hook) slides with itsbackside over the plastic support parts. The hook-nose moves to the narrowestpoint of each plastic support. Before reaching the largest diameter of the plasticsupport the hook-nose swings back. The pendulum is held in its position by its

gravity due to the eccentric position of the pivot.

Due to inertia, the pendulum does not have enough time to return to its normalposition when experiencing overspeed and the nose of the hook runs into theplastic supports. This causes both the support rope and the carriage to halt. Theindented pendulum also activates the limit switch; this switch stops the driveimmediately. In order to avoid the pendulum from swinging excessively damagingthe support rope, a block is installed.



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page 15 of 18

2.4.2. Barriers

The connection rod is fixed with the barriers by levers. When opening the barriers,the connection rod moves down and vice versa. The locking hook is mountedswivelling (rod 1) on the connection rod. The connection rod is guided on theplatform slider (rod 2).

Illustration 23: locking device for barriers, positions of the parts



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page 16 of 18

Barrier closed and locked:A spring keeps the locking hook in its position and the locking hookprops itself up on rod 2. As rod 1 is connected with the locking hook, itcannot be moved. If the spring breaks, the locking hook will be kept inposition by gravity and by the spring and the roller of the limit switch. Ifthe barriers are open and the spring breaks, the locking hook will notclose and after leaving the by-pass switch at the latest, the lift will stopimmediately.

Barrier unlocked and opened:Due to the control cams entrance, the levers for unclamping thebarriers will be pressed about 8 cm in front of the stop position. Byusing the unclamping lever and the bearing mounted on the upper endof the locking hook, the locking hook will be moved into positionunclamped. Therefore rod 2 is free and can move down into the slotand the barrier can be opened (parallel to this, the ramp will move intoits parking position).

Illustration 24



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page 17 of 18

2.4.3. Bypass switch

The lever for unclamping the barriers and a limit switch inside the carriage ispressed by the control cam when reaching a stop position. This limit switchserves as an additional safety feature and stops the drive immediately. Toprevent the drive from stopping during normal operation and to guarantee acomplete drive into the stop position, it is necessary to use the by-passswitch, mounted on the lower end of the railway.

Entering the stop position:

The control lever is turned down and keeps the by-pass switch pressed(illustration 25, left). The control lever will be moved up when reachingbar 2. The by-pass switch is now free. Due to the opening contact ofthe by-pass switch, the limit switch for the barrier in the carriage isbridged.

Exiting the stop position:When reaching Bar 1 the control lever is pressed down, therefore thebypass switch is activated again and the switch elements are opened.

The control lever keeps its position due to its gravity and due to thepressure of the spring of the by-pass switch. Should the lever moveinto an incorrect position while travelling, bar 1 corrects the position ofthe control lever before reaching the next stop position.

Illustration 25



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2.4.4. Pressure-sensitive ramps

The ramps of the platform serve as an additional safety feature, as they arepressure-sensitive. The circuit will be interrupted immediately (stopping thecarriage) if the platform runs against an obstacle or if the ramps are pressed downby the user.

omega - technical documentation manual

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