Crowd Machinery Components

DECK EXTENSIONS

Right and left side deck extensions are bolted to each side of the revolving frame. They provide a mounting area for the electrical transformers and accessory machinery as well as supporting the machinery house walls.

BALLAST BOX

Deck Extensions and Ballast Box

The ballast box is an all-welded steel fabrication located at the rear of the main revolving frame. A series of vertical plates in the box form compartments for holding ballast.

MACHINERY HOUSE

The machinery house encloses the revolving frame, ballast box and deck extensions. It is constructed of self-supporting steel panels with built-in framing. Removable roof sections are provided over the swing machinery and to the side and rear of the A-frame. The house also provides mounting for the air ventilation and pressurization system. A separate electrical room is located over the ballast box. Platforms and stairs facilitate access to the sides and tops of the house for inspection and maintenance purposes. Boarding stairs and/or ladders permit easy access onto the machine.

BOARDING STAIRS - RIGHT

A set of boarding stairs is attached to the right side machinery house platform. When lowered, the stairs allow entrance to the machinery house from ground level. These stairs must be in their raised and latched position to enable the operator’s controls.

POWER STEP

The Power Step is one of the means for boarding the machine. It is located on the left side of the machinery house, near the center of the lower platform. Use the lock / release handle from ground level to lower the power step for boarding. When the power step is NOT latched in place, the operator’s controls are deactivated.