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Why does the rope brake close with compressed air and not with spring force? | | |
The use of compressed air makes the rope brake maintenance-free; also, a longer braking path is possible using the same braking force. If spring force were used for closing, the brake .
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Can the test time and the start of the compressor be set at the control unit? | | |
This is possible with the new RBC 14 control unit. This unit will be available in January 2004.
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Is there a type test for the rope brake control? | | |
There is no type test for the C11 and C31 controls, since a type tested safety relay is connected on line side. For the RBC 14, the follow-up model to the C11, a type test will be conducted, which eliminates the need for the safety relay.
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Will there also be a follow-up model to the C31 control unit? | | |
Yes. For the C31 control unit, a follow-up model RBC34 is also being developed, which activates the rope brake in case of overspeed either via the switch on the limiter or via sensors. This control unit will be subjected to a type test.
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What is the maximum weight (rated load) for which rope brakes can be used? | | |
With a suspension of 1:1, rope brakes are available for a capacity of 5000 kg. With other suspensions, e.g. 2:1, the capacity of the individual rope brakes is doubled.
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When does the rope brake close? | | |
The rope brake normally closes only in the event of overspeed. However, it can also close at any stop, e.g. for securing the cage during loading. This does not result in increased wear, since the ropes are not moving in this case.
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Aren’t the carrying ropes damaged by the rope brake? | | |
In extensive tests with the rope brake, no damage occurred to the ropes. In addition, we can fall back on 20 years of experience in this respect.
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When do the brake linings have to be replaced? | | |
Extensive tests were conducted with 350 brakings at various speeds and loads. The brake linings did not have to be replaced afterwards. For this reason, we bond the linings permanently to the base plate. If a system has been braked more than 350 times due to overspeed, it is time to conduct a general overhaul.
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