How to control demolition excavator boom
Demolition boom take advantage of existed control system to work. comparing with standard setting, demo boom need to install 3groups of distribution valve and pilot control valve, Middle link cylinder 1 controled by distribution valve1; control valve is foot control installed in cabin. Middle Link cylinder 2 controled by original stick cylinder control valve. Shear cylinder controled by original bucket cylinder control valve. There is no change for boom cylinder control valve, new distribution valve 2 used to control hydraulic shear to open and close, it is foot control in operator cabin. New distribution 3 control shear to rotate, it is also foot control in cabin.
Demolition Excavator Boom use existed control system to work, if there is only one set of backup distribution valve and no need install hydraulic shear distribution valve, Middle link 1 and Middle link 2 can share one set distribution and control valve and it is controled by stick cylinder control valve. shear cylinder controled by original bucket cylinder control valve, no change for boom cylinder control valve, the backup distribution control valve used to control shear open and close, foot control installed in cabin.
