Running clearances

Pages:85-85
 
FREE EXCERPT
B7. Running clearances
B7.1. Clearance between car sill and edge of the serving level
of an open landing door
B7. 1.1. When the car is stationary at a landing the clearance
between the car sill and the edge of the serving level of an open
landing door should not exceed l'/4in. (35mm)
B7.2. Clearance between counterweight and well
B7.2.l (1) When the counterweight is guided by ropes or
steel wires, the clearance between the counterweight and the wall
of the well, measured at the closest point, should not be less than
2in. (5cm).
(2) To meet the above requirement it will be necessary to
provide, at the general layout stage, for a clearance exceeding
2in. by an amount proportionate to the distance between the
brackets.
B7.3. Clearance between moving parts of a single lift1
B7.3.1. When the counterweight is guided by ropes or steel
wires, the clearance between moving parts of a single lift, measured
at the closest point, should not be less than 23/4in. (7cm).
B7.3.2. To meet the above requirement it will be necessary
to provide, at the general layout stage, for a clearance exceeding
23/4in. by an amount proportionate to the distance between the
brackets.
1 For the case of multiple lifts in a single well see B1.6.
85

To continue reading

REQUEST YOUR TRIAL