Counterweight

(redirected from counterweights)
Also found in: Dictionary, Thesaurus, Legal.

counterweight

[′kau̇nt·ər‚wāt]
(mechanical engineering)
A device which counterbalances the original load in elevators and skip and mine hoists, going up when the load goes down, so that the engine must only drive against the unbalanced load and overcome friction.
Any weight placed on a mechanism which is out of balance so as to maintain static equilibrium. Also known as counterbalance; counterpoise.

Counterweight

A heavy component used to counterbalance the weight of a movable element; connected either with a cable over a pulley as in elevators or at one end of a lever as in a bascule bridge.

Counterweight

 

(also, counterbalance, counterpoise), a weight used for the complete or partial balancing of forces and moments in machines or their parts. The installation of counterweights on rotating parts, such as crankshafts, can eliminate the harmful effects of centrifugal forces originating from off-center masses.

In metalcutting machine tools, hoists, deep-well plunger pumps, and similar machines with vertically or obliquely moving parts, counterweights reduce the drive power. In hoisting cranes, counterweights provide stability; the arm and weight of the crane’s counterweight are selected to balance the moment of the weight of the mechanisms and metal frame together with half of the moment of a rated load. Counterweights are usually made in the form of a set of pig-iron or concrete bars or slabs.

counterweight

1. A weight that just balances another weight.
2. In a theater stagehouse, a weight (usually of iron, sand, or shot) used to balance suspended scenery, or the like.
References in periodicals archive ?
It completed its work to replace the antiquated hemp-and-sandbag system with a more modern (though still manual) counterweight system in September.
To study the relationship between the fundamental frequency and pre-stress value of pre-stressed concrete beams, this paper adopted the hammering method to excite concrete beams under different pre-stress values, eccentricities and counterweights based on two kinds of methods including experiments and numerical simulation, processed and analyzed the collected mid-span acceleration of beams to quantitatively analyze the relationship between the fundamental frequency of beams and pre-stress.
Caption: As supplied by AstroPhysics, the 1100GTO includes a counterweight shaft and GTOCP4 control box, as well as 12-volt power cables and a CD containing the user manual, PEMPro, and PulseGuide software.
On average, load charts with maximum counterweight have improved by approximately 5% over its predecessor.
After counterweight rigging was first introduced to the United States in the Chicago Auditorium in 1889, it was adopted by the Chicago scenic studios and installed into masonic theaters as early as 1904.
What surprised me was that J of Repair knew exactly how I had bent the counterweight extension arm without me telling him how
The Boeing official insisted that the counterweights would not emit poisonous clouds of uranium dioxide, unless they were "exposed to a fire of 800 degrees Celsius [1472 [degrees] F] for more than four hours.
Perhaps the most significant feature is a patented interactive counterweight system designed to provide optimum weight placement at all boom angles.
The UK Environment and Transport Minister has assured residents living in the area in which a Korean Air Boeing 747 crashed that they should not be concerned about the affect of the missing uranium counterweights.
A large glass wall, which can be raised on counterweights, looks out over the fourth main space of the house, a large pool which is enclosed by the house itself on three sides, and by a garden wall at the back of the site.
The Vortek([R]) system provides greater safety by eliminating the need for crews to climb ladders and catwalks as well as eliminating the need to handle heavy counterweights above the stage.