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The Tensioning device is installed in anchor end for adjusting the clues tension, has the disconnection brake function.
The outer type ratchet tensioning device installation schematic
The inner type ratchet tensioning device installation schematic
The main parts
Ratchet wheel device
To adjust the wire tensile force at the tensioning place of overhead contact system.
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S/N
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Item
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Unit
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Index
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1
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Max. working load
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kN
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1.1 times of connected conductor.
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2
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Transmission ratio
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/
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1:3
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3
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Tensile failure load
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kN
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Not be less than 3 times of max. working load.
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4
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Transmission ratio
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/
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≥97%
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Terminal anchor clamp for messenger wire
Used for the terminal anchor of messenger wire .
Terminal anchor clamp for messenger wire taper type schematic （QAl9-4)
Terminal anchor clamp for messenger wire wedge type schematic （ZG270-500)
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S/N
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Item
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Unit
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Index
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1
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Max horizontal work load
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kN
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1.1 times of connected conductor
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2
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Failure load
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kN
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Not be less than 3 times of max. working load
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3
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Sliding load
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kN
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Within the scope of 95% nominal breaking force of connecting contact wire, the wire should not slip out from the clamp, and also should not wire broken inside the clamp and at the port of the clamp.
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Terminal anchor clamp for contact wire
Used for the terminal anchor of contact wire
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S/N
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Item
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Unit
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Index
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1
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Max horizontal work load
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kN
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1.1 times of connected conductor
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2
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Failure load
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kN
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Not be less than 3 times of max. working load
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3
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Sliding load
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kN
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Within the scope of 95% nominal breaking force of connecting contact wire, the contact wire should not slip out from the clamp, and also should not wire broken inside the clamp and at the port of the clamp.
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Adjusted bolt
It is applied to adjusting tension force at the termination of double branch and parallel connection messenger wire , contact wire or feeder wire .
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S/N
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Item
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Unit
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Index
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1
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Max work load
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kN
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24
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2
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Failure load
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kN
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≥ 72
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