Abstract:
A piston pump or compressor having a pump cylinder (2) and a cylinder head (7) with suction valve (8) and exhaust valve (10) is arranged and oriented in such a manner that the pump cylinder (2) has its cylinder 'head' (7) turned downwardly, this head thus forming the bottom of the cylinder (2). The exhaust valve (10) is placed such that it communicates with the lowermost cylinder space portion, whereby any collection of liquid in the cylinder (2) will be forced out already by an initial downstroke of the piston, without any impact on the pump at the end of the downward working stroke. The pump is also well suited for handling pure liquid and gaseous liquid, and on that background a highly simplified suction emptying for LPG gas cylinders is disclosed.
Abstract:
For the successive introduction of gas cylinders onto a filling carrousel in a filling plant is used a swivel arm (18), which rotates about a vertical shaft (16) as mounted sidewise of an inlet station (4), at the lee side thereof relative the movement of the carrousel. The swivel arm (18) rotates in synchronism with the carrousel and pushes the cylinder (12) onto the carrousel with decreasing velocity. The cylinder is accelerated in the moving direction of the carrousel by its friction therewith, whereby the cylinder is held against an end portion (22) of the swivel arm and is thereby guided entirely onto the carrousel during the last part of the pushing-in movement of the swivel arm. Almost optimal introduction conditions with respect to rapidity and positioning accuracy are achievable with the use of an extremely simple mechanism, which will even work correctly independent of variations of the r.p.m. of the carrousel.
Abstract:
In sorter conveyor systems of the type in which articles to be sorted are loaded onto laterally tiltable trays (8) which are moved past a plurality of unloading stations (12), in which the articles are selectively unloaded, the development of an associated automatic control system has gone in the direction of a central control with an increasing number of operation and control functions, including also an electronic conveying of destination codes for loaded trays in synchronism with the motion of these. However, there are considerable problems with respect to computer capacity, synchronization accuracy and wiring, and the present invention provides for a simplified control system exploiting decentral control units (22, 26, 28; 30); the system is based on the use of trays (6, 8) materially carrying respective identification codes (44) that can be detected in the unloading stations and thereby evoke an actuation of the tilting off of articles for just that unloading station (12), which via the control units has been designated to receive the load of a specific tray, the identity of which has been detected by the loading of the tray. It is possible hereby to design the sorter conveyor (2) itself with very coarse tolerances and to arrange for a large number of control functions without capacity problems in the control equipment and with a considerably simplified wiring.
Abstract:
In order to achieve that the transport trays (4) on a sorting conveyer can be tilted laterally for unloading goods to a selected receiving station along the conveyer, traditionally quite complicated and expensive mechanisms are used. The invention provides an extremely simple tilting mechanism, where each transport tray (4) is only supported by a rotation bearing joint (6, 8) having its axis of rotation oriented obliquely upwardly-forwardly or upwardly-rearwardly to the direction of transport. A lateral tilting of the horizontal tray (4) to one or the other side can then take place solely by a rotation actuation of the portion (6) of the bearing joint connected to the tray, and the bearing joint can then in a very simple manner be constituted by a pipe (6) which protrudes obliquely downwardly from the tray and is received on a fixed pivot (8) protruding obliquely upwardly from the conveyer chain.
Abstract:
By an oblique feeding of articles (8) onto vacant areas or trays (4) of a sorting conveyor (2) it is known to use a feeding conveyor (6, 14), on which the articles are successively accelerated up to the required loading speed. This feeding shall be initiated from standstill, when the vacant area (4A, B, C) is located at a certain distance from the place of infeed, and the associated time lapse makes it difficult to arrange for a correct feeding into trays immediately succeeding each other, particularly if the supply of the articles to the feeding conveyor is not fully synchronous. The invention provides for an improvement into different manners, viz. for one thing by a length separation of the feeding conveyor in individually controllable sections (14a-d), whereby one article (8) may be under rapid final loading whilst other articles may be under acceleration at lower speed on the same conveyor, and for another thing by the use of requirement controlled accelerations, which may lead to intermediate velocities higher than the feeding speed. Hereby lately supplied article may catch-up with a vacant tray (4), which could not otherwise be reached with the use of a standard acceleration to the feeding speed.
Abstract:
A sorter conveyor having laterally tiltable transport trays (6) usually comprises a transport chain driven by a driving station, in which a driving wheel or worm cooperates with the chain links, these being advanced along guiding rails arranged with a small mutual spacing and carrying both the transport trays and the tilting mechanisms associated therewith. Such an arrangement causes considerable problems with respect to tolerances for both the longitudinal pitch of the chain links and the mounting of the guiding rails. According to the invention the chain links are substituted by carts (6) that are advanced along mutually widely spaced guiding rails (2), whereby the tolerance demands on the latter are reduced considerably; the carts are advanced by means of stationary linear motors (26), which renders any tolerance demands on the longitudinal pitch of the tray units entirely superfluous. Also the tilting mechanisms may be given a very simple design.
Abstract:
In large airports large amounts of luggage have to be sorted out and transported from check-in areas (14) to various quay fingers that are quite long and are mounted radiating from a central area, which also includes an area (10) for reception and delivery of arriving luggage. Moreover, a large amount of transit luggage should be handled, viz. transferred directly between different quay fingers. The invention provides for a complete transportation system, which is advantageously usable for these purposes and is characterized by a high degree of simplicity and clearness as far as both construction and operative control are concerned. The heart of the system is a central, round-going conveyor system (2), which receives luggage both from the check-in areas (14) and from individual conveyor loops (4) that extend along the single quay fingers, whereby departing luggage as well as transit luggage can easily be sorted out to the correct quay fingers, the conveyor loops of which can also convey luggage to the control delivery area. The transportation along the very long quay fingers is effected by means of carts (26) each having carrier sections (32) for luggage to arbitrary destination; these carts are advanced with high velocity along the long stretches, but with a required low velocity through the areas in which luggage is to be loaded or selectively unloaded.