MIL-R-22827 Refuse Container, Hoisting Units

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10

MIL-R-22827E

3.6.6.2 Top. Hardware for top doors shall consist of heavy-duty steel

hinge pins, hinge straps, and counterbalancing coil springs. The spring

arrangements and torsion shall be such that the door, when unlatched will rise

only approximately 4 inches due to the spring action, and will not pop up to

further height and cause possible injury to personnel. The door shall require

manual assistance to raise to the half-open position and then shall be spring

controlled to full open position or higher when tilted in the dumping position

for top discharge containers.

3.6.6.3 End. Hinges for end doors shall be heavy-duty steel plate hinges

with fixed hinge pins.

3.5.7 Boom rests. Containers shall have one boom rest on each end wall,

located adjacent to the bail wall, to support the lifting beams of the

hoist-haul mechanism and secure the container while hauling. Boom rests shall

be fabricated of 1/4-inch steel plate or steel bar with reinforcing gussets,

and when welded to the container shall project approximately 5-1/2 inches out

from the container wall. Types IV and V containers shall have one combination

boom rest-chain guide on each end wall adjacent to the boom rest, except that

the outer extremity shall have a lip projecting upward approximately 3/4 inch

above the apex of the boom rest, to guide the chain during top-discharge

operations.

3.6.8 Lifting pins. All containers shall have lifting pins designed in

accordance 3.3(a) with dimensions which will permit use with the

counterbalanced lifting links supplied the hoist-haul mechanisms specified.

Lifting pins shall be steel castings or steel plate and alloy steel shaft

suitable for intended use. The hub shafting shall be 2 inches in diameter and

approximately 2-1/2 inches long. A horizontal wing shall be welded to the

outer end of the hub, and shall be of such dimensions as to pass through the

slotted hole in the lifting link of the hoist-haul mechanisms. The wing shall

prevent disengagement of the lifting link in all lifting and dumping

positions. The lifting pins shall project approximately 4-1/4 inches out from

the end wall of the container. The mounting base of the lifting pin shall be

proportioned to distribute the design load over a sufficient area of the end

wall to reduce local stresses and distortion. Two lifting pins shall be

supplied on each container.

3.6.9 Bail bars and assemblies.

All containers shall have solid steel

bails designed and positioned in accordance with 3.4(b). Unless otherwise

specified (see 6.1), types IV and V containers shall have bails recessed near

the bottom of the bail walls for use with double hook hoist-haul mechanisms,

and the bail for type IV containers shall be pivoted at the bottom with

torsion spring to return the bail to the normal position. When specified (see

6.1), types IV and V containers shall have recessed bail bar assemblies

suitable for use with old type single hook hoist-haul mechanisms.