OPERATING METHOD OF BOOM SELF-PROPELLED CRANE AND DEVICE FOR IMPLEMENTATION THEREOF Russian patent published in 2020 - IPC B66C23/82

Abstract RU 2730730 C1

FIELD: lifting devices.

SUBSTANCE: invention relates to jib cranes. Boom lifting device comprises counterweight and A-like frame. Auxiliary counterweight is installed on transport trolley connected to rotary platform by two telescopic crossarms.

EFFECT: increasing and maintaining constant crane lifting capacity at change of boom reach.

2 cl, 9 dwg

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RU 2 730 730 C1

Authors

Melnikov Evgenij Maksimovich

Dates

2020-08-25—Published

2019-08-27—Filed