Material or article handling – Self-loading or unloading vehicles – Conveyor
Patent
1994-04-07
1996-03-12
Werner, Frank E.
Material or article handling
Self-loading or unloading vehicles
Conveyor
212231, 198812, 198313, 1983161, 198317, 198318, 414503, 414505, B60P 136
Patent
active
054981190
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a turret deck for materials transport vehicles supporting a handling device and, more particularly, to a conveyor used as a transporting means and further relates to a telescopic type conveyor belt supportably mounted on such turret deck.
2. Description of Background Information
Transportation of materials of the cement mortar type is made on special purpose vehicles, the so-called truck mixers which, most of the time, include mortar conveyor means that convey the mortar directly to site.
Typically, mortar transportation is made by means of a belt conveyor of the endless belt type. This conveyor generally comprises several hinged sections whereby, among others, setting thereof into the transport position shall be performed while remaining within the carrying vehicle template. However, these conveyors extend over the at rear of the transport vehicle and offset from the longitudinal axis. Such arrangement is likely, in the course of time, to cause the chassis of the vehicle to endure twisting strain.
Furthermore, the length of such conveyor requires that handling, telescopic development or transport setting be made most cautiously in order to avoid striking of any of the power lines present around the site.
SUMMARY OF THE INVENTION
The present invention provides a turret deck and belt conveyor so constructed as, on one hand, to remedy the afore said drawbacks and, on the other hand, ensure increased safety on operation. The turret deck enables the conveyor to be suitably mounted on the chassis of the transport vehicle in such a way as to avoid warping of the chassis. Besides, the actuation means of the turret deck and conveyor are intended, upon development of the latter and setting thereof to the transport position, to suppress the usual risks incurred by the presence of power lines.
The turret deck in accordance with the invention comprises: provided, onto the movable part thereof, with a base plate in the form of a supporting yoke that supports the conveyor by means of a horizontal pivotal shaft, comprising, on one hand, a first cylinder which is interposed between the base plate and a second yoke hinged to the tilting shaft of the conveyor and, on the other hand, a second cylinder interposed between the second supporting yoke and the conveyor whereby two types of tilting are achieved: a tilting used to set the conveyor into the transport position and a tilting for positioning the conveyor at materials unloading step.
According to an additional arrangement of the invention, the turret deck comprises means used to retract or maintain the conveyor in a retracted position, particularly on actuation of the control cylinder which controls the tilting of transport setting.
Still according to the invention, the turret deck platform is made integral with the chassis of the vehicle by means of a frame which comprises a sliding rail whereby relative longitudinal motion of said platform with respect to the chassis by the action of an actuator is allowed in order to permit positioning at will of the conveyor under the materials chute.
According to another arrangement of the invention, the turret deck frame is mounted onto a rail which is transversally disposed at the rear of said vehicle by the action of an actuator.
Still according to the invention, the turret deck base plate is pivotally supported with respect to the platform along a vertical shaft by means of a chain sprocket system actuated by means of two cylinders, the rods thereof being integral respectively with the ends of said chain.
The invention also relates to the telescopic belt conveyor supported by the turret deck, which belt is guided between an upstream roller and a downstream roller and cooperates, at the lower belt thereof, with band storage means upon retraction of the conveyor. According to a preferred arrangement of the invention, the telescopic conveyor is comprised of several sections which are guided into each other as actuated by a control cylinder, e
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patent: 4361219 (1982-11-01), Aldridge et al.
patent: 4503803 (1985-03-01), Barnes
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International Search Report and Annex in French.
French Search Report and Annex.
International Preliminary Examination Report in French and English.
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