US 4,199,299 AGranted

Material handling apparatus for use in a mine

AssigneePetitto Mine Equipment Repair, Inc.

InventorsAngelo S. Petitto, Sr., Angelo A. Petitto, James L. Petitto

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Abstract

A self-propelled vehicle maneuverable in an underground mine includes an elongated mobile body having a forward end portion with a boom assembly mounted thereon. The boom assembly includes a pair of sections that are telescopically arranged to effect a change in the length of the boom. The outer end portion of the boom carries a material handling device which is operable to perform lifting, towing, recovery and other material handling operations in the mine. A pivot arrangement supports the boom assembly for lateral swinging movement on the front end of the mobile body. A pair of double-acting piston cylinder assemblies are mounted on the mobile body and are connected to the pivot arrangement for laterally swinging the boom assembly. The boom assembly is also connected to the pivot arrangement for upward and downward pivotal movement independent of the lateral swinging movement by operation of a lift cylinder. With this arrangement the boom assembly is extensible and movable laterally and vertically to move the material handling device to safely and efficiently perform a variety of material handling operations conducted in an underground mine.

A material handling vehicle for use in an underground mine comprising,

a mobile body,
a boom assembly extending from said mobile body,
said boom assembly having a first end portion adjacent said mobile body and a second end portion spaced from said first end portion and extending from said mobile body,
a pivot pin secured to said mobile body and extending upwardly therefrom,
said boom assembly first end portion being pivotally connected to said upwardly extending pivot pin,
first actuating means mounted on said mobile body and connected to said pivot pin for pivoting said boom assembly laterally relative to said mobile body,
first connecting means for securing said boom assembly first end portion to said mobile body to permit upward and downward movement of said boom assembly relative to said mobile body,
second actuating means being connected at one end to said upwardly extending pivot pin and connected at the other end to said boom assembly first end portion for raising and lowering said boom assembly to effect upward and downward movement of said boom assembly independent of the pivotal movement of said boom assembly,
material engaging means connected to the boom assembly second end portion for engaging material to be lifted and moved by said boom assembly,
said material engaging means including a hook member having an elongated shank and a hooked end portion,
a retainer pivotally connected to said boom assembly second end portion for upward and downward pivotal movement about a horizontal axis,
said retainer having a socket for rotatably receiving said hook member shank,
said hook member being supported by said retainer for rotational movement about the elongated axis of said shank,
second connecting means for connecting said retainer to said boom member second end portion,
said second connecting means being secured to said boom member second end portion,
extensible means for extending and retracting said boom assembly second end portion relative to said boom assembly first end portion, and
said extensible means having an end portion secured to said second connecting means.

14 more elements

Abstract

Claims11