Counterweight

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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 ?
In the mid-80s, Kuehnel switched the company's focus from agricultural counterweights to industrial and material handling weights, and it has remained in that market sector since.
Pink Sheets: SIDG) is the leading independent manufacturer of steel counterweights and structural weldments.
What surprised me was that J of Repair knew exactly how I had bent the counterweight extension arm without me telling him how
With lintels of 7 tons in weight each, the counterweights would need to be 1 ton with a 6.
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.
Crash site investigators have so far recovered 16 of the 20 counterweights, which apparently show that `there has been no airborne dispersal of uranium from the crash site,` according to a letter sent to Lord Beaumont of Whitley, who raised resident`s concerns with the minister.
The counterweights, guide rails (car and counterweight) and the door frames are not exchanged.
The 150P side boom weighs 35,000/37,000 pounds fully loaded with side boom and counterweights.
The reason was the insuperable problems in constructing the colossal counterweights at a height of 100 feet.
The projected 120-employee company will pour counterweights from 1.
located in Barnwell, South Carolina, has received certification as a Federal Aviation Administration approved repair station for depleted uranium aircraft counterweights.
While the counterweights add maximum stability, the attachment's low and compact design guarantees optimum balance and control as well as excellent visibility.