Stanchion (redirected from stanchions)

stanchion

any vertical pole, rod, etc., used as a support

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stanchion [′stan·chən]

(engineering)

A structural steel member, usually larger than a strut, whose main function is to withstand axial compressive stresses.

(naval architecture)

An upright metal post on a ship.

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stanchion

1. A prop, upright bar, or piece of timber giving support to a roof, a window, or the like.

2. An upright bar, beam, or post, as of a window, screen, railing, etc.

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Stanchion 

a device for tying animals at such places in buildings as stalls and milking stalls, and sometimes in pastures and pens. A stanchion prevents the animal from moving too far forward or backward, from putting its feet in the feed trough or manure gutter, and from lying down across its stall.

Figure 1. Individual vertical chain stanchion: (1) long chain, (2) short chain

Stanchions are designed for one or several animals and are either vertical or horizontal in construction. The most common type of individual stanchion is the vertical two-ended chain stanchion (see Figure 1), which consists of two sections of chain 155 and 50 cm long with rings on the ends. The long chain is secured to the floor or front wall of the feed trough and suspended vertically from a hook on the stall frame. The short chain is mounted on the long one and put around the animal’s neck. Another type of individual stanchion is the individual cable stanchion.

Figure 2. Group chain stanchion: (a) open, (b) closed; (1) long chain, (2) short chain, (3) double chain, (4) and (5) cables, (6) drive cylinder. Measurements are in millimeters.

There are two types of group stanchions: chain and yoke stanchions. The most common chain stanchion (see Figure 2) consists of a cylinder and three chains connected to two cables. To tie an animal with such a stanchion, the handle of the cylinder is turned, moving the cables which draw the chain with them. Chain 1 and cable 5 are drawn inside chain 3, forming a collar that moves freely up and down. The stanchion is released by turning the cylinder in the opposite direction, causing the chains to separate and freeing the animal. A group yoke stanchion (see Figure 3) consists of tubular collars secured to slide bars that slide along the horizontal tubing of the stall frame, and of a drive mechanism. When the handle of the drive mechanism is turned, the slide bars move in opposite directions and the

Figure 3. Group yoke stanchion: (1) tubular collar, (2) slide bar, (3) drive mechanism

collars open up, permitting the animals to leave the stall at will. Turning the handle of the drive mechanism in the opposite direction brings the arms of the collar closer together, tying the animals in the stall.