The invention relates to a clamping apparatus capable of rotating and automatically stretching out and drawing back. The clamping apparatus comprises a clamping apparatus shell, a clamping apparatus head and a tapered screw. When the tapered screw rotates, the clamping apparatus head automatically stretches out; when the tapered screw reversely rotates, the clamping apparatus head automatically draws back. With adoption of the function, a weight with a middle hole can be locked and then moved and hoisted.
Clamping apparatus capable of rotating and automatically stretching out and drawing back
23.12.2015
Patent
Elektronische Ressource
Englisch
IPC: | B66C Krane , CRANES |
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