The column & boom is composed by column, boom, guider block,
elevator, extend, column rotator, basement, etc.
The column, boom, guider block, basement are all welded and
There is protective lumen inside the column, which can keep the
balancer from locking in it.
The elevation is driven by worm reducer through chain & wheel.
And the motor is with brake, the reducer can be self locked also.
Hence, the boom can be locked at any location. There is anti-drop
to prevent the boom from dropping if chain breaks off.
The boom extension is driven by gear-worm reducer through gear and
rack. By using AC motor and inverter, the speed can be stepless
adjusted in a wide range.
The rectangular guides on the column and boom, is 16Mn material,
which is high strength. And there are grease charge holes on the
wheels which are convenient for maintenance.
There is safe guard on the ladder. And safe covers are provided on
Column rotate is by manual with rotating bearing. There is manual
Electrical control system is composed by cabinet and remote box.
ABB motors and shneider inverter equipped.