NO123795B - - Google Patents

Description

Transport chain.

The present invention relates to a transport chain. for transport

of falling goods, consisting of chain links extended in one piece and equipped with carriers, which chain links at one end have a fork-shaped head and at the other end a straight head, arranged to be inserted into the fork-shaped head of the adjacent chain link, as the through the fork-shaped head and the corresponding straight head there is a link bolt for the hinge connection between the chain links.

Transport chains of this type are previously known. They have the disadvantage that the link bolt fuses are outside the chain links and are . formed by means of spring rings that engage in grooves or by means of continuous splints.' The operation of such known chains normally takes place over the split heads. Such an operation, however, has the disadvantage that with a reversal of the direction of movement, the performance capability of the chain drops very strongly and due to the very poor engagement conditions between the chain head and sprocket, there is a significant relative movement at the same time that high surface pressures occur between the two parts, something that leads to severe wear and tear. In known embodiments, there is also the advantage that the movement is not uniform across the drive wheels. Furthermore, they have link bolt fuses, which have been referred to as disadvantages in that there is a lot of wear and tear, poor fuse due to small groove depth, opening of the fuse due to foreign parts getting stuck between the fuse and the chain link and the risk of accidents during revision work because of the splinters that stick out. In addition, the known link bolt fuses are expensive to manufacture as the grooves must be turned and the corresponding surfaces on the chain preferably must. be processed.-

The present invention aims to overcome these disadvantages.

The peculiarity of the chains according to the invention is that rounded drive protrusions are arranged in the area of the link bolts and. the thus hinged heads whose drive protrusions are extended in one with the relevant chain link and. is designed to accommodate fuses for the link bolt.

The invention further focuses on special features of the chain link fuse.

On the attached drawings, two versions are shown.

Fig. 1 shows two chain connections and the adjacent links in a first embodiment, partly in section and partly seen from above.

Fig. 2 shows a drive or turning station on a smaller scale.

Fig. 3 shows a section through a chain connection in another embodiment.

In the first embodiment, which is shown in fig. 1, the lower links have a chain link 1 which at one end has two forked heads 5, 5 and at the other end a straight head 10.

Furthermore, known driver steps 11, 11' are arranged at any place on the chain link 1. Rounded drive projections 15, 15' are attached to the bifurcated heads 5, 5'. These rounded projections 15, 15" are preferably arranged near the bores 17, 17' which accommodate a link bolt 7. The drive projections. 15" 15' serves not only for operation of the chain but also for holding bolt fuses,' e.g.... the so-called tension pins 8, 8' which are shown in the present example, i.e. spring-loaded small rudders which that the link belts 7 are quickly inserted into the bores 17, 171 are struck through the drive protrusions 159 15'. The chain links shown are preferably stopped, which, however, is not a necessary condition.

These chain links allow the following mode of operation for the transport chain and provide the following advantages.

Thanks to the conveyor ladders 11, 111 on chain laskerie 1, goods that are to be transported immediately are carried along quickly. The drive protrusions 15, 15' allow a clean <:>engagement in the drive sprockets 20, so that relative movements, such as occur with known chains, are practically excluded and the operation can be reversed without further ado. This advantage is particularly apparent from fig. 2 where the sprocket 20 which has two tooth rings which sit on the shaft 22 and the drive projections 15,

15' on the heads .5, 5' on the chain link engages in the tooth spaces 25, 25' on the sprocket 20 as a roller chain. For the driver steps there are recesses 26. Furthermore, the drive protrusions 15, 1'5' are designed to accommodate bolt locks, as these serve as side restraints for the link bolts 7. This locking method has proven to be very "advantageous and safe even with very heavy loads..

In fig. 3 shows a chain connection with another embodiment of the bolt safety... In a rounded drive spring 15", instead of a safety pin 8, a stop shoulder 27 is arranged in the bore 17' which is to receive the link bolt 7. In the drive projection 15 which lies directly opposite this, therefore only a transverse bore 18 is shown here for receiving a safety pin 8. This achieves the advantage that the processing is cheaper.

It is also apparent from fig. 3 how the stop shoulders 35 formed by the actual forked heads 5 grip around the rounded drive springs 1-5 and • that the chain link edges 2 are chamfered on all sides. The stop shoulders 35 ensure good side lining at the chain edges 20 in both directions of movement for the transport chain when

and outlet, which is of essential importance for the chain conveyor to work flawlessly at the minimum possible power consumption. The chamfered chain link edges 2 also offer the advantage that practically no material can attach to such links, so that extra loads caused by such material do not occur. Chamfered chain link edges, with the advantages they bring with them, can only be used when the limitations of the driving protrusions 15 are pulled back slightly against the limitations of the heads 5.

The drive protrusions 15 > 15' do not necessarily have to be placed outside the forked heads 5, 5' but can lie inside or on the straight heads 10. It is also possible to use two types of chain lashers, namely one that has forked heads at both ends and one that has straight.heads at both ends. Below this, the fork-split heads are preferably provided with external rounded drive springs. One like that. chain will not. have some relative movements when engaging with the sprocket. Nor are the securing pins absolutely necessary, as it is easy to arrange any other suitable securing elements so that the link bolts do not protrude beyond the forked ends of the transport chain. In the production of the present chain, it is also not absolutely necessary to stop them, whether it has to be made of tempered or spheroidal material, as it is also possible to

drop-forge them in some way.or to weld them. Depending on the carriers to be used, one or another manufacturing method can be adapted.

Claims (3)

1.. Transport chain for the transport of styrteg.ods, consisting of chain links in one piece and equipped with carriers, which chain link at one end has a fork-shaped head and at the other end a straight head, designed to be fed into in the forked head of the adjacent chain link, as through the forked head and the corresponding straight head there is a link bolt for the hinged connection between the chain links, characterized in that rounded drive protrusions 0 5, 15' j 15") are arranged in the area of the link bolts (7) and the thereby attached heads (5, 5', 10) which drive protrusions are extended in one with the relevant chain link (t ).and is designed to accommodate fuses for the link bolt (7). 2. Transport chain as specified in claim 1, characterized in that at least one pin (8) is arranged as a link bolt safety device. 3. Transport chain as stated in claim 1 or 2, characterized in that the link bolt safety device is arranged outside the link bolt (7). h. Transport chain as specified in claim 1, characterized in that a stop surface (35) is arranged at the transition from rounded drive projections (15) to the head (5).