Excavator-hoist construction vehicle
First Claim
1. An excavator-hoist construction vehicle comprising an undercarriage arranged generally horizontally, said undercarriage having a front edge and an oppositely directed rear edge with side edges extending between said front and rear edges, a superstructure mounted on said undercarriage and rotatable relative thereto about a vertical axis, an elongated boom having a first end and a second end with the first end thereof secured to said superstructure and the second end thereof spaced outwardly from said superstructure, the second end of said boom arranged to support a tool such as for use in excavating, hoisting and the like, a pair of first supporting legs each having a first end and a second end with the first end of each leg being hinged to said front edge of said undercarriage with said hinged connections being spaced apart, and the second ends of said first supporting legs spaced outwardly from said undercarriage, a pair of second support legs each having a first end and a second end with the first end of each being hinged to the rear edge of said undercarriage with the hinged connections being spaced apart and the second ends thereof being spaced outwardly from said undercarriage, said first and second supporting legs being movably adjustable in vertical and horizontal planes, means on the second ends of each of said first and second supporting legs for supporting a wheel, means for steering wheels on at least one pair of said first and second supporting legs, and said steerable wheels being detachably mounted on said supporting legs and being replaceable by holding members depending on the type of work to be performed by the construction vehicle, and means for driving at least one of the wheels on said first and second supporting legs.
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Accused Products
Abstract
An excavator-hoist construction vehicle includes an undercarriage with a superstructure supported on it for rotation about a vertical axis. A boom is hinged to the superstructure and supports a tool for digging, lifting or the like. Two pair of supporting legs are attached to the undercarriage, one pair extending forwardly and the other rearwardly. The supporting legs are adjustably movable in the vertical and horizontal directions. Each of the ends of the supporting legs spaced outwardly from the undercarriage are arranged to support a wheel. The wheels on one pair of the supporting legs can be steered and at least one wheel on the supporting legs can be driven.
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Citations
13 Claims
- 1. An excavator-hoist construction vehicle comprising an undercarriage arranged generally horizontally, said undercarriage having a front edge and an oppositely directed rear edge with side edges extending between said front and rear edges, a superstructure mounted on said undercarriage and rotatable relative thereto about a vertical axis, an elongated boom having a first end and a second end with the first end thereof secured to said superstructure and the second end thereof spaced outwardly from said superstructure, the second end of said boom arranged to support a tool such as for use in excavating, hoisting and the like, a pair of first supporting legs each having a first end and a second end with the first end of each leg being hinged to said front edge of said undercarriage with said hinged connections being spaced apart, and the second ends of said first supporting legs spaced outwardly from said undercarriage, a pair of second support legs each having a first end and a second end with the first end of each being hinged to the rear edge of said undercarriage with the hinged connections being spaced apart and the second ends thereof being spaced outwardly from said undercarriage, said first and second supporting legs being movably adjustable in vertical and horizontal planes, means on the second ends of each of said first and second supporting legs for supporting a wheel, means for steering wheels on at least one pair of said first and second supporting legs, and said steerable wheels being detachably mounted on said supporting legs and being replaceable by holding members depending on the type of work to be performed by the construction vehicle, and means for driving at least one of the wheels on said first and second supporting legs.
Specification