DE8306993U1 - ROLL CHAIN WITH HIGH BOLTS - Google Patents

Description

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17 8 44 f

Applicant: SOCIETA ¹ ITALIANA CATENE CALIBRATE REGINA SpA MILAN, Italy

"Roller chain with hollow pins"

Chains with hollow pins are mainly used
Metal net conveyors, in food machines, in packaging machines, in automatic distribution machines, in industrial ovens and cooling systems, in agricultural equipment, in textile machines, etc. used.

Usually these chains work in pairs, whereby

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the two chains of a chain pair may show only very slight deviations in their mutual position, both in the new condition, as well as in the further operation, so that their extension is not only very small, but above all it should be as constant as possible for both chains of the pair.

The need for the network or the connecting elements arranged between the two chains of a chain pair Keeping the two chains precisely aligned requires the use of a large number of link links between the chains so that the chain pitch must be small.

For these applications, chains according to the ISO standard with a pitch of 1/2 ", 5/8" or 3/4 "and used with hollow bolts, which, in addition to the properties mentioned, have the required strengths have the same breaking load.

The chains of this type that have been used up to now are divided into two genera with very different ones Construction criteria.

The first genus includes chains with small pitches, hollow pins and fixed rollers, which are followed by the following Before and. Have disadvantages. Theirs is very beneficial high tensile strength, while a disadvantage is that the fixed roller wears off a lot because it on the support guides slides and on it the weight of the conveyed parts and the weight of the conveyor (two chains and the fasteners) lascet. Fer-

The small pitch prevents it from inserting a rotatable roller, as there is then the space for the engagement of the tooth of the drive sprocket would be missing. This result could possibly be achieved by that the strength of all round parts is reduced, but then the chain would no longer have the right one for the application necessary mechanical strength.

The broad genus includes chains with small pitches, hollow pins and rotatable rollers, which include the following Have advantages and disadvantages. It is advantageous that the rotatable roller enables correct operation of the chain on the support guides and an appropriate distribution of the load acting on the chains Loads permitted. A disadvantage, however, is that, due to the small work surface, which is during the turn the chain has to absorb the load as it rotates around the chain wheels, causing a rapid expansion. Since it is also a matter of a joint between elements that are in any case heat-treated, the differences in hardness cause on such small areas widely variable signs of wear, which are strong on the two chains are different.

The object of the invention is to create a chain which has the advantages of the two types of chains mentioned, but without their disadvantages.

This is achieved according to the invention by means of a chain which is characterized in that it is between load a perforated connecting pin on the chain links

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seated attached to the flanks of one link and through the side panels of the other link under spacers passes through wear-resistant bushes and carries a rotatable roller.

5 Two pairs of side plates are preferably provided.

The characteristics and advantages of the chain according to the invention are shown below with reference to an exemplary embodiment

with reference to the only figure in the drawing closer to er-10 Lautert, which partially shows two links of the chain I in section.

1 The links 10 of the chain are interconnected by a

I nen hollow bolt 11 connected, which is attached to the plates 12 of the external

for its limb is attached and secured by two pairs of plates

I 15 13 of the inner member passes, being arranged on the through-I occurs provide wear-bushings 14 between which a sufficient work surface for receiving the ι Verschleissbelastungen when turning the chain-

S te deliver.

A rotatable roller 15 is also on the bolt 11 I mounted to distribute the loads.

I The chain thus realized has a small pitch

! the necessary strength for the uses mentioned at the beginning and works correctly with sprockets of the ISO-25 standard.

Claims (2)

Patent Attorneys · ■ "·· '" ·· "' ••" •• bipl.-lng. Curt Wallach European patent representative DIpL-lng. Günther Koch European Patent Attorneys Dipl.-Phys. Dr Tino Kaibaeh Dipl.-Ing. Rainer Feldkamp D-8000 Munich 2 Kaufingerstraße 8 Telephone (089) 2 60 8078 Telex 5 29 513 wakai d Societa "Italiana Catene ^{Detum: 10} ' ^{March 1983} Calibrate Regina SpA Our _{reference: 17 644} - FK / gw Via S. Maria Segreta 6
MILANO / Italy Roller chain with high pins PROTECTION CLAIMS ι 1st chain, characterized in that it is between ϊ the links (10) have a hollow connecting bolt (Ii) having on the planks (12) of the one j link is attached _f by the side plates (13) j of the other link with the interposition of ι wear-resistant sockets (14) is passed ! and carries a rotatable roller (15). 17644 = \ J 5 J 3 1 lit I- Ul YY YY 13 Y Λ 3 » 2. 2. Chain according to claim 1, characterized in that - that said other link has two pairs of side plates (13). • I I «1 Il ■