Installation Example; Description; Functional Description - Greifzug blocstop BSO Série Manuel D'installation

Installation and operating manual
DANGER!
Danger of severe accidents!
– 24-hour operation is prohibited.
– Use in areas where there is a risk of explosion is prohib-
ited.
– Use in a corrosive environment is prohibited.
– Use in close proximity to open fire or in an extremely hot
environment is prohibited.
Corrosion protection in accordance with order specifications
1)

Installation example

See Fig. 2.
1 Safety rope
2 Suspension rope
3 Limit switch actuator
4 "Lifting" limit switch
Structural requirements
The maximum possible nominal load must be multiplied by the
operating coefficient in order to calculate the necessary load
bearing capacity.
The load bearing capacity of the structural equipment for anchor-
ing the product, the rigging and the ropes must be at least the
nominal load bearing capacity multiplied by the operating coeffi-
cients:
Independent secondary brake: Operating coefficient = 5
The suspended assembly for the ropes and products must com-
ply with the Directive 2006/42/EC and the applicable standards
(such as EN 1808).
The design must ensure that the impact factor remains below 3
(see EN 1808, 6.5.3.6) in the case of personnel lifting equipment
and securing to rigid assemblies. This is necessary in order to
ensure that the dynamic loading is adequate in the event of an
emergency stop.
The unit sizes of the different models can be found in Table 2 on
page IV.
Rope, products in contact with the rope and rigging must not be
soiled by heavily soiling building materials such as concrete,
epoxy resin or other adhesive materials. Protect the products
against soiling! Always use brush attachments to clean the wire
rope in an extremely dirty environment.
EN-6
1)
5 tirak™ hoist
6 blocstop™ BSO
7 Tension weight
Nameplate and warning signs / application
restrictions
See Fig. 4.
Item Name
1 blocstop™ BSO nameplate
2 Rope diameter
The necessary information can be obtained from the nameplate.
Directives and standards
Applicable directives and standards: See '10.1 Directives and
standards' on page 8.
Product versions covered in the manual
The product versions described in this manual are listed in
Table 1 on page II.
4

Description

4.1

Functional description

The independent secondary brake monitors the load lifting
equipment's speed. The independent secondary brake will stop
the downward movement of the load lifting equipment if the
speed is too high, using a friction actuated connection (clamps)
on the safety rope.
The independent secondary brake works automatically. The
speed of the safety rope is permanently monitored by a centrifu-
gal force weight.
The centrifugal force balance weight will activate the clamping
jaws if a sudden acceleration occurs. The clamping jaws secure
the load to the safety rope. The clamping jaws are self clamping
jaws: The clamping jaws automatically shut tighter if the load
moves against the lifting direction. The greater the tractive force,
the tighter the clamping effect will be.
See Fig. 12.
When mounting the independent secondary brake the direction in
which the safety rope or the independent secondary brake accel-
erates in the event of the suspension rope snapping, for example,
so that the impulse to clamp the rope is triggered.
The braking direction (B) is the direction in which the independ-
ent secondary brake holds the end of the rope bearing the load.
The rope running direction (A) is the direction in which the rope
runs through the independent secondary brake regardless of
whether:
the independent secondary brake is attached to a load
carrier or to a component and moves up and down a fixed
rope or
G905.5 - 02/2011