Altec DRM 12, Руководство пользователя

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Appendix — Glossary
closest to the turntable. 3: the end of an articulating boom that remains
positioned closest to the turntable when the boom is fully unfolded.
basket — see platform.
battery charger — a device used to restore the electrical charge in
a battery.
bearing — a machine part that is installed between two adjacent machine
parts to allow those parts to rotate or slide with respect to each other.
Commonly used to decrease friction or wear on components.
behind cab mount — a pedestal mounting position located immediately
behind the vehicle cab on the longitudinal centerline of the chassis.
below rotation — in reference to a position on or about a unit that is
vertically below the rotation bearing.
below rotation controls — controls that are located on the chassis,
used for operating some or all of the functions of the unit.
bleed-off — to reduce the trapped pressure in a hydraulic system,
line, or component, to a zero state by allowing fluid to escape under
controlled conditions through a valve or outlet.
blocking valve — a two-position, two-way valve that blocks pump flow
to a hydraulic circuit or system when it is not actuated, and opens to
allow fluid when actuated.
body — a structure containing compartments for storage of tools,
materials, and/or other payload which is installed on a vehicle frame
or subbase.
body belt — a component in a personal fall protection system consisting
of a strap which is secured about the waist of a person, with a means
for attaching it to a lanyard. (As of January 1, 1998, the use of a body
belt for personal fall protection is prohibited by OSHA.)
body harness — a component in a personal fall protection system
consisting of an assembly of straps which are secured about the waist,
chest, shoulders, and legs of a person, with a means for attaching the
assembly to a lanyard.
bolt — a cylindrical fastener with external screw threads at one end
and a head configuration such hexagonal, square, or round at the other
end, which conforms to the dimensional and material specifications
published for bolts. (These specifications are different from those for
cap screws.)
boom — a movable, mechanical structure that is used to support a
platform, material handling components and/or other attachments on
a unit.
boom angle indicator — a device which indicates the angle between
the boom centerline and a horizontal plane.
boom flares — steel structures mounted on the boom tip of a digger
derrick which are used to protect the boom tip from loads and support
poles carried on the winch line.
boom functions valve — the control valve on a digger derrick that
directs hydraulic pressure and flow to the boom functions (boom, rota -
tion, intermediate boom, upper boom) hydraulic circuits.
boom limiting system — the system of hydraulic cylinders or a
combination of switches that prevent the platform from moving into a
non-working position.
boom pin — the horizontal pin that connects the lower boom to the
turntable or riser.
boom rest — the structural member attached to the chassis or body
to support the lower boom in the travel or rest position.
boom stow switch — a limit switch which is actuated to shut off the
boom lower function when the boom reaches its stowed position in
the boom rest.
boom stow valve
— a mechanically actuated hydraulic valve that limits
the downward pressure of a boom as it is placed in its rest.
boom tip — the area at the end of an extendible or articulating upper
boom that is farthest from the turntable when the boom assembly is
extended or unfolded. This area includes all components at the end
of the boom above the band of arrows.
boom tip idler sheave — the upper sheave in a digger derrick upper
boom tip containing two sheaves, which carries the winch line as it
travels from the winch to the lower sheave (boom tip sheave).
boom tip pin — a horizontal pin at the upper boom tip. Platform mounting
bracket(s) and material handling devices are fastened to this pin.
boom tip sheave — 1: the sheave in a digger derrick upper boom tip
containing only one sheave, which carries the winch line as it travels
from the winch to the load. 2: the lower sheave in a digger derrick up -
per boom tip containing two sheaves, which carries the winch line as it
travels from the upper sheave (boom tip idler sheave) to the load.
boom tip tools — see upper tool circuit.
boom tip winch — a winch located at the tip of a boom.
bore — the inside diameter of a pipe, tube, cylinder barrel, or cylindrical
hole in any of various other components.
boss — protruding material on a part which adds strength, facilitates
assembly, provides for fastenings, etc.
brake — a device used to slow or stop the rotation or movement of a
component such as a rotation gearbox, winch, gravity leveled platform,
or arbor bar.
brake caliper — mechanical assembly that houses the brake pads
and piston used to apply stopping force on the brake rotor.
brake controller — interface between tow vehicle and electric trailer
brakes. Can be inertia activated or based on time delay from activation
of vehicle brakes. Typically in the tow vehicle’s driving compartment
with electrical line running to the trailer wiring connector. Most require
the user to adjust brake gain to compensate for varying trailer load.
Necessary for the use of electric trailer brakes.
brake rotor — rotating disk attached to a shaft that transfers the force
from the brake caliper to the shaft.
break-away switch — a device which automatically activates the
breaking system of a towed unit when unintentionally separated from
the towing vehicle.
breather — a device that permits air to move in and out of a container
or component to maintain atmospheric pressure.
bridge mount — a unit mounting configuration in which the turntable
is mounted on a pedestal structure which forms a bridge over the
cargo area.
broadband — a high speed telecommunication system utilizing fiber
optic and/or coaxial cable.
bucket — see platform.
buckeye — see forged pin retainer.
bullwheel assembly — an assembly of steel rollers used as a portion
of a cable stringing system.
burst pressure — the minimum internal pressure that will cause a
hose, tube, cylinder, or other hydraulic or pneumatic component to
rupture or split open.
button head — a type of cap screw with a rounded head containing a
socket into which a tool can be inserted to turn the cap screw.
bypass — a secondary passage for fluid flow.
bypass valve — a hydraulic valve that allows for an alternate pas-
sage for fluid flow.
cable — 1: a wire or wire rope by which force is exerted to control or
operate a mechanism. 2: an assembly of two or more electrical conduc-
tors or optical fibers laid up together, usually by being twisted around a
central axis and/or by being enclosed within an outer covering.
cable chute — a device used to guide cable into strand for lashing
the cable to the strand when placing cable. A trolley allows the device
to ride on the strand as cable is fed through the chute.
cable drive system — an upper boom drive mechanism which utilizes
cables to produce upper boom movement.
cable guide — a bracket which is mounted on a boom to guide the
winch line.
cable keeper — 1: a mechanical device attached to a cable that is used
to maintain the position of the cable on a sheave. 2: a component used
to prevent a cable or winch line from coming off a sheave.
cable lasher — a mechanical device which wraps lashing wire in a
spiral configuration around a length of suspension strand and adjacent
communication cable.
cable lug — a mechanical device attached to a cable that is used to
maintain the position of the cable on a sheave.
cable placer — a type of aerial device which contains a cable string-
ing system and associated components for use in erecting overhead
communication cable.
cable slug — the steel end fitting at each end of the drive cable in an
upper boom drive system. One end is attached to the cylinder rod and
the other is secured in a pocket on the elbow sheave.