Overhead crane and boom
OwnerLee Weddelinventor
Life of this patent
Estimating the term…
Abstract
A crane assembly containing a boom for an overhead crane and trolley contains an arm having a first vertical portion and an outer surface, the arm fixed to the crane for upper and lower movement of the arm, and the arm containing a second portion angularly extending from the vertical portion. An outer sleeve surrounds and is fixed to the vertical portion, wherein the outer sleeve is fixed to the trolley and extends about the arm thereby defining a plenum between the outer sleeve and the inner vertical arm. During operation, the arm is adapted to be vertically moved within said outer sleeve. A support beam is fixed to the trolley, and is hingedly connected to the outer sleeve. A drive assembly is connected to the outer sleeve for rotating the boom about the support beam.
Claims20
A boom for an overhead crane and trolley comprising:
- an arm having a first vertical portion fixed to said crane for upper and lower movement of said arm, said arm containing a second portion angularly extending from said vertical portion;
- a first pair of track bearings comprising—a first track bearing fixed to said arm, and, a second track bearing fixed to said arm, said second track bearing vertically spaced from said first track bearing;
- a second pair of track bearings comprising—a third track bearing fixed to said arm, and, a fourth track bearing fixed to said arm, said fourth track bearing vertically spaced from said third track bearing;
- a third pair of track bearings comprising—a fifth track bearing angularly fixed to said arm, and, a sixth track bearing fixed to said arm, said sixth track bearing vertically spaced from said fifth track bearing;
- a fourth pair of track bearings comprising—a seventh track bearing fixed to said arm, and, an eighth track bearing fixed to said arm, said eighth track bearing vertically spaced from said seventh track bearing;
- an outer sleeve fixed to said trolley and extending about said arm;
- and
- a first linear slot, a second linear slot, a third linear slot, and a fourth linear slot, each slot formed within and spaced about said outer sleeve, said first, second, third, and fourth pairs of track bearings operably tracked within said first, second, third, and fourth slots, respectively,
- wherein during operation, said arm is adapted to be slidably engaged within said outer sleeve.
A boom for an overhead crane and trolley comprising:
- an arm having a first vertical portion fixed to said crane for upper and lower movement of said arm, said arm containing a second portion angularly extending from said vertical portion;
- a first pair of vertically aligned roller track bearings fixed to said arm;
- a second pair of vertically aligned roller track bearings fixed to said arm;
- a third pair of vertically aligned roller track bearings fixed to said arm;
- a fourth pair of vertically aligned roller track bearings fixed to said arm;
- an outer sleeve fixed to said trolley and extending about said arm;
- and
- a first slot, a second slot, a third slot, and a fourth slot, each slot formed within and spaced about said outer sleeve, said first, second, third, and fourth pairs of roller track bearings operably tracked within said first, second, third, and fourth slots, respectively,
- wherein during operation, said arm is adapted to be slidably engaged within said outer sleeve.
A boom for an overhead crane and trolley comprising:
- an arm having a first vertical portion and an outer surface, said arm fixed to said crane for upper and lower movement of said arm, said arm containing a second portion angularly extending from said vertical portion;
- and
- an outer sleeve containing an inner wall, said outer sleeve fixed to said trolley and extending about said arm, wherein the outer surface of said arm is adapted to be at least substantially equidistant from the inner wall of said outer sleeve, thereby forming a substantially uniform plenum or annulus about the arm between the inner wall and the outer surface;
- wherein during operation, said arm is adapted to be slidably engaged within said outer sleeve.
Dependencies are inferred from the claim text.