Counterweight


Also found in: Dictionary, Thesaurus, Medical, Legal, Acronyms, Wikipedia.

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 ?
Our wings are small and cramped, and we would lose valuable space with a counterweight system.
This paper adopted the hammering method to excite concrete beams with different pre-stress values, eccentricities and counterweights based on two kinds of methods including experiment 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.
Cincinnati shows the heritage of the hemp rigging fly tower, initially adopted by Sosman and Landis Scenic Studios of Chicago for its early counterweight rigging systems.
If you didn't have extra weight to add to the counterweight, you could raise the counterweight to a height of 78 meters to break the record or use a pumpkin with a mass of 1,03 kg.
The word trebuchet, which is used in English to denote a counterweight operated siege machine, originally meant only the largest and most powerful of these machines.
What surprised me was that J of Repair knew exactly how I had bent the counterweight extension arm without me telling him how
For freehand yo-yos, Brown says, it took a lot of experimenting to discover that the best ratio of yo-yo mass to counterweight mass is 7 to 1.
As a partner and counterweight to English Heritage, CABE has earned itself a reputation and the status to assume the responsibility of publishing such a guide and so must be commended.
Her recent show was titled simply "Drawings," suggesting that the relative consistency, even predictability--though never simplicity--of her content has become a counterweight to continuing modifications of form.
A large set piece is flown in from above by the fly man, who operates the theater's counterweight system.