Conveyors: fluid current – With load braking or retarding means
Patent
1984-02-02
1986-05-13
Nase, Jeffrey V.
Conveyors: fluid current
With load braking or retarding means
B65G 5120
Patent
active
045883300
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to pneumatic conveyers and, more particularly, to devices for starting and braking containers and locking them after they are stopped.
DESCRIPTION OF THE PRIOR ART
Known in the art is a device for starting and braking containers and locking them after they are stopped, mounted in pneumatic conveyers. By the term "container" we understand "a transportation unit" which may consist both of one container or a plurality of containers forming a train.
The device comprises a frame mounting a trough which by its one end portion adjoins the pipe-line of the conveyer. The both edges of the trough have recesses made therein and serving as guides for the support members of the truck. The truck has a drive moving it along the guides and is rigidly connected with a lever clamp having a drive mounted on the truck and used to turn its levers during engagement and disengagement of the clamp with the container bumper. Rigidly secured to the clamp is a cup overlapping the cross-section of the pipe-line. The cup has support members made as wheels resting upon the inner surface of the pipe-line and the trough. (c.f. for example USSR Inventor's Certificate N 757,431 published in Bulletin "Discoveries, Inventions, Industrial Designs and Trade Marks", vol. 31, 1980).
In the known device containers are started, braked and locked after they are stopped by means of the truck moving drive which is essentially a linear electric motor whose inductor is mounted on the truck so that it can move vertically relative thereto, the secondary element being the trough made from a ferromagnetic material. Pivotly secured to the truck are levers whose some end portions are equipped with brake shoes interacting with the trough guides during the braking of the truck (for example, for stopping the container), and the other end portions of the levers are interconnected by means of brace springs and are connected with the aid of ties to the truck moving drive.
In the known device braking is provided mainly by the electric motor due to the electromagnetic forces of interaction of the inductor with the trough.
Therefore, the main forces of braking are received by the truck, which results in its rather fast wear.
Besides, in order to ensure its reliable operation, the known device requires careful maintenance during its adjustment and use, as all the elements of the lever mechanism securing the brake shoes and the linear electric motor are to be set in strictly predetermined positions and any deviations from the latter may result in skewness of the whole truck and, consequently, in inoperatability of the device. Therefore, in order to ensure operatability of the device, it is necessary to have highly skilled servicing personnel.
All this results in higher costs of the device during its use.
DISCLOSURE OF THE INVENTION
The present invention has as its task provision of such a device for starting and braking containers and locking them after they are stopped, in which the truck would be relieved of the main forces of braking and the whole device would be relatively simple in operation.
This task is accomplished by that in a device for starting and braking containers and locking them after they are stopped, for use in pneumatic conveyers, comprising a frame mounting a trough which adjoins the pipe-line of the conveyer and has its edges provided with recesses serving as guides for the truck support members, the truck having a drive moving it along the guides and carrying a lever clamp used for containers and having a cup that is secured thereon and overlaps the cross-section of the pipe-line of the conveyer, kinematically connected with the drive for its interaction with the container, according to the invention, the device is provided with a sleeve which has a diameter corresponding to that of the pipe-line of the conveyer, is positioned between the trough and the pipe-line of the conveyer and has recesses made in the inner wall thereof, disposed at the opposite side and serving as a continuation of
REFERENCES:
patent: 3762665 (1973-10-01), Alexandrov et al.
Alexandrov Adolf M.
Tsernes Vladimir Y.
Volyansky Igor I.
Yashin Jury A.
Nase Jeffrey V.
Williams L. E.
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