§ 1910.180 Crawler locomotive and truck cranes.

(a) Definitions applicable to this section. (1) A crawler crane consists of a rotating superstructure with power plant, operating machinery, and boom, mounted on a base, equipped with crawler treads for travel. Its function is to hoist and swing loads at various radii.

(2) A locomotive crane consists of a rotating superstructure with power-plant, operating machinery and boom, mounted on a base or car equipped for travel on railroad track. It may be self-propelled or propelled by an outside source. Its function is to hoist and swing loads at various radii.

(3) A truck crane consists of a rotating superstructure with powerplant, operating machinery and boom, mounted on an automotive truck equipped with a powerplant for travel. Its function is to hoist and swing loads at various radii.

(4) A wheel mounted crane (wagon crane) consists of a rotating superstructure with powerplant, operating machinery and boom, mounted on a base or platform equipped with axles and rubber-tired wheels for travel. The base is usually propelled by the engine in the superstructure, but it may be equipped with a separate engine controlled from the superstructure. Its function is to hoist and swing loads at various radii.

(5) An accessory is a secondary part or assembly of parts which contributes to the overall function and usefulness of a machine.

(6) Appointed means assigned specific responsibilities by the employer or the employer's representative.

(7) ANSI means the American National Standards Institute.

(8) An angle indicator (boom) is an accessory which measures the angle of the boom to the horizontal.

(9) The axis of rotation is the vertical axis around which the crane superstructure rotates.

(10) Axle means the shaft or spindle with which or about which a wheel rotates. On truck- and wheel-mounted cranes it refers to an automotive type of axle assembly including housings, gearing, differential, bearings, and mounting appurtenances.

(11) Axle (bogie) means two or more automotive-type axles mounted in tandem in a frame so as to divide the load between the axles and permit vertical oscillation of the wheels.

(12) The base (mounting) is the traveling base or carrier on which the rotating superstructure is mounted such as a car, truck, crawlers, or wheel platform.

(13) The boom (crane) is a member hinged to the front of the rotating superstructure with the outer end supported by ropes leading to a gantry or A-frame and used for supporting the hoisting tackle.

(14) The boom angle is the angle between the longitudinal centerline of the boom and the horizontal. The boom longitudinal centerline is a straight line between the boom foot pin (heel pin) centerline and boom point sheave pin centerline.

(15) The boom hoist is a hoist drum and rope reeving system used to raise and lower the boom. The rope system may be all live reeving or a combination of live reeving and pendants.

(16) The boom stop is a device used to limit the angle of the boom at the highest position.

(17) A brake is a device used for retarding or stopping motion by friction or power means.

(18) A cab is a housing which covers the rotating superstructure machinery and/or operator's station. On truck-crane trucks a separate cab covers the driver's station.

(19) The clutch is a friction, electromagnetic, hydraulic, pneumatic, or positive mechanical device for engagement or disengagement of power.

(20) The counterweight is a weight used to supplement the weight of the machine in providing stability for lifting working loads.

(21) Designated means selected or assigned by the employer or the employer's representative as being qualified to perform specific duties.

(22) The drum is the cylindrical members around which ropes are wound for raising and lowering the load or boom.

(23) Dynamic (loading) means loads introduced into the machine or its components by forces in motion.

(24) The gantry (A-frame) is a structural frame, extending above the superstructure, to which the boom support ropes are reeved.

(25) A jib is an extension attached to the boom point to provide added boom length for lifting specified loads. The jib may be in line with the boom or offset to various angles.

(26) Load (working) means the external load, in pounds, applied to the crane, including the weight of load-attaching equipment such as load blocks, shackles, and slings.

(27) Load block (upper) means the assembly of hook or shackle, swivel, sheaves, pins, and frame suspended from the boom point.

(28) Load block (lower) means the assembly of hook or shackle, swivel, sheaves, pins, and frame suspended by the hoisting ropes.

(29) A load hoist is a hoist drum and rope reeving system used for hoisting and lowering loads.

(30) Load ratings are crane ratings in pounds established by the manufacturer in accordance with paragraph (c) of this section.

(31) Outriggers are extendable or fixed metal arms, attached to the mounting base, which rest on supports at the outer ends.

(32) Rail clamp means a tong-like metal device, mounted on a locomotive crane car, which can be connected to the track.

(33) Reeving means a rope system in which the rope travels around drums and sheaves.