Line pans

Details Line pans Line pans

1986-05-01

1987-01-20

Valenza, Joseph E.

Conveyors: power-driven

Conveyor section

Pusher conveyor and separate load support surface

1988603, B65G 1928

Patent

active

046375104

DESCRIPTION:

BRIEF SUMMARY
This invention relates to line pans for Armoured Face Conveyors.
A conventional AFC conveyor comprises a series of line pans jointed end to end to form a pan section for the chain to run in and furnishings are attached by bolts to each sigma-section side of each line pan. Additionally a base plate often covers the bottom of the pan.
Several problems exist with this arrangement: section. severely limited to the bottom chain unless doors are made in the deck plate.
Furnishings have not traditionally been premanently attached to the pan section because: considerable wear and needs replacement. to be detachable to enable the conveyor to be re-handed.
An object of the present invention is to obviate or mitigate the aforementioned problems.
According to the present invention there is provided a line pan for an AFC conveyor, wherein the upper part of each sigma-section side, and the deck plate are removably attached to the lower parts of the sigma-section sides and the base plate.
Preferably, the furnishings are permanently attached to the lower part of the sigma-section sides.
Preferably also, sheer blocks are attached to the lower part of the sides at one end of the pan and are overlain by the upper part of the sides, said blocks extending from one end of the pan for location in complementary recesses in the other end of an adjacent like pan.
Preferably also, adjacent pans are interconnected by pan connector straps which are elongate and have a pair of longitudinally spaced apertures each for engaging a retaining pin in the line pan, means being provided to secure the strap on the pins.
The upper side parts are secured to the lower side parts by any suitable means, such as bolts which locate vertically in aligned holes in flanges extending from the side wall parts, or latches in which blocks are mounted on the lower side parts and locking pins are mounted on the upper side parts to engage the blocks when the upper side parts engage the lower side parts.
An embodiment of the present invention will now be described, by way of example with reference to the accompanying drawings, in which:
FIG. 1 is a sectional end view of an AFC line pan according to the invention, on the lines A--A of FIGS. 2 and 3;
FIGS. 2 and 3 are opposite side views of the junction of two line pans;
FIGS. 4, 5 and 6 are respectively side view, plan view and sectional end elevation on the line VI--VI of FIG. 5; and
FIGS. 7, 8 and 9 are corresponding views of a modification.
Referring firstly to FIG. 1, the line pan comprises a pair of sigma-section sides 10, 10A mounted on a base plate 11 and a deck plate 12 between the sides. Furnishings 13, 14 are attached to each side, a ramp 13 being at the face side and a spill plate 14 at the goaf side.
The line pan is formed in two separate fabrications, namely a bottom fabrication which includes the lower parts 10A of the sides, the base plate 11 and the furnishings 13, 14, which are preferably an integral part of the bottom fabrication, and a top fabrication which includes the upper parts 10 of the sides and the deck plate 12.
The top fabrication is made up in three sections as illustrated in FIG. 5, namely two end sections A, B and a centre section C.
The centre section C consists of a portion of the deck plate 12 and a portion of the face side sigma-section. The width of the deck plate portion narrows towards the goaf side and passes under the goaf side sigma-section which is split into two portions above the deck plate portion. The centre section C is normally secured to the bottom fabrication, as are the other two sections as hereinafter described, but it can be released and slid outwards, like a drawer from the face side of the pan to provide an inspection hatch when e.g. searching for a damaged chain below the deck plate 12. The centre or drawer section C can be slid back into position, or it can be completely removed, and then one or both end sections A, B can be released from the bottom fabrication, by being lifted up and disengaged from the adjacent pan to give a larger area for inspection or

REFERENCES:
patent: 3822011 (1974-07-01), Brava et al.
patent: 4282968 (1981-08-01), Temme
patent: 4359154 (1982-11-01), Temme

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