The invention provides an emergency tower descending device of a tower crane. The emergency tower descending device comprises an emergency oil drainage channel and an emergency valve, wherein one endof the emergency oil drainage channel communicates with a high-pressure volume cavity in a jacking oil cylinder, and the other end of the emergency oil drainage channel communicates with an H port ofa pump station; and the emergency valve is arranged on the emergency oil drainage channel to prevent high-pressure oil in the high-pressure volume cavity in the jacking oil cylinder from flowing intoan oil tank through the emergency oil drainage channel and the H port of the pump station under the non-emergency situation. According to the emergency tower descending device, the emergency oil drainage channel is arranged, and the emergency valve arranged on the emergency oil drainage channel is utilized, so that the oil in the jacking oil cylinder can be drained in emergency circumstances.
本发明提供一种塔式起重机应急降塔装置,包括应急泄油通道和应急阀;所述的应急泄油通道一端与顶升油缸内高压容积腔连通,另一端与泵站H口连通;所述的应急阀设置在应急泄油通道上,防止顶升油缸内高压容积腔中的高压油在非应急情况下通过应急泄油通道经泵站H口流入油箱。本发明中,设置了一条应急泄油通道,利用设置在该应急泄油通道上安装的应急阀,可以在应急情况下对顶升油缸泄油。
Emergency tower descending device of tower crane
一种塔式起重机应急降塔装置
2021-02-26
Patent
Electronic Resource
Chinese
IPC: | B66C Krane , CRANES |
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