Conveyors: power-driven – Conveyor section – Endless conveyor
Patent
1988-05-27
1990-02-27
Valenza, Joseph E.
Conveyors: power-driven
Conveyor section
Endless conveyor
198712, B65G 3920
Patent
active
049038230
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to conveyors for receiving printed matter of newspaper type from printing machines and for transferring thereof to devices for further handling, i.e. for stacking, packing thereof, and more particularly to spatial conveyors for carrying newspapers, books and magazines.
2. Description of the Prior Art
Known in the art is a conveyor to transfer newspapers from printing machines to devices for handling thereof, which comprises an endless chain made up of carriages hingedly connected to each other and moved on wheels along a trackway (CH,A, 592,562).
In the known conveyor the trackway is shaped as a C-section channel rectangular in cross-section and having a groove in one of its sides extending along the longitudinal axis of the trackway. Inside this channel there move chain carriages each of which is provided with three wheels. One wheel is introduced into the groove of the C-section trackway and interacts by its rim with edges of the groove. Two other wheels are located insdie the C-section trackway, one on either side of the first wheel, and connected by a common axle perpendicular to the first wheel axle.
The known conveyor provides for spatial movement of newspapers from the printing machines to the devices for handling thereof, but it features high specific metal content as its trackway is made in the form of a C-section and is labour-consuming in manufacture as the spatial bendings of the C-section is a complicated operation.
Also known in the art is a conveyor to transfer newspapers from printing machines to devices for handling thereof in which a trackway has a V-shaped cross section throughout the length thereof whereas a draw member comprising hingedly connected carriages moves along the trackway on spherical supports (DE,C, 1,217,270).
Though it is easier to manufacture the V-section bent in space than that spaced as C-section however, such section also features high specific metal content and is difficult to manufacture.
Moreover, connecting the draw member carriages by means of pivoting bearings complicates the assembly of the draw member as an outer ring of the bearing is pressed in the carriage and makes the repair thereof more difficult if the necessity arises to replace the bearing or the carriage body. This is due to a possible damage to the carriage body when the bearing is pressed out.
SUMMARY OF THE INVENTION
The invention seeks to provide a spatial conveyor having a draw member and a trackway so designed as to reduce amount of metal per structure and to simplify the design and process of manufacture of the conveyor as a whole.
This is achieved by a spatial conveyor comprising a draw member having load-carrying means and moving on spherical supports along a trackway. According to the invention the draw member consists of links each of which comprises interconnected plate cheeks having cavities with spherical surfaces, some of the cavities accommodating elements connecting the adjacent plate cheeks, the others accommodating the spherical bearings moving along the trackway made in the form of a plurality of support elements disposed equidistantly and uniformly with respect to the longitudinal axis of the conveyor over the entire length thereof and forming a closed regular pylygon in a section perpendicular to the axis of the conveyor.
Making the draw member in the form of plate cheeks with cavities having spherical surfaces simplifies the design of the draw member owing to replacement of two wheels and attachment fitting thereof in each carriage by one spherical support, and also simplifies the assembly and disassembly procedures due to replacement of the pivoting bearing in each carriage by a connecting element.
It is expedient that the trackway be made in the form of uniformly disposed support elements forming a closed regular polygon in the cross section which allows the amount of metal consumed for the trackway to be reduced, the manufacturing process to be simplified and maintenance thereof to be made easie
REFERENCES:
patent: 3895707 (1975-07-01), Anikanov et al.
patent: 3934709 (1976-01-01), Anikanov et al.
patent: 4746007 (1988-05-01), Houseman
patent: 4838410 (1989-06-01), Gough
Gutov Sergei K.
Plesser Dmitry A.
Radutsky Grigory A.
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