DE2717790C2 - Conveyor chain - Google Patents

Description

The invention relates to a conveyor chain with welded round steel links large pitch, which in the Area of their limbs each with at least one retaining projection for position adjustment and locking are provided by components that can be fastened to the round steel members.

In such conveyor chains, the holding projections are preferably used to attach flange drivers or roller guide crosses, d. H. of components that keep their position even after prolonged operation of the Not allowed to change the conveyor chain.

In a known conveyor chain, the chain links outside the area of the weld point have, and although on their longitudinal leg, which is free of weld seams, a thickening produced by upsetting the retaining projection forms (DE-GM 19 44 140). Such a solution is not fully satisfactory insofar as it is in the production is comparatively complex and consequently expensive

Another, also known, conveyor chain, whose longitudinal limbs, has proven to be more favorable in terms of production technology be provided with locking recesses by cold embossing prior to the heat treatment (DE-OS 22 09 736). Even with this construction, however, the attachment of the locking recesses requires a special operation.

The invention is based on the object of a conveyor chain to create the type described above, the chain links without increasing the number of to Chain production absolutely necessary operations and without additional upsetting or embossing devices are provided with retaining projections.

According to the invention, this object is achieved in that the retaining projections are separated from the by machining Machining in a defined shape converted weld beads are formed.

With a view to the fact that welded chain links for conveyor chains are anyway made by machining have to be deburred, the conveyor chain according to the invention offers the advantage that its retaining projections can be produced without additional work. Since the manufacture of chains in the The area of mass production falls, the production simplification achieved is particularly difficult.

A very secure and non-rotatable locking of the components to be attached to the conveyor chain is obtained, if the round steel links each consist of two U-shaped brackets and those at the connection points of the Machined weld beads located on the bracket form the retaining projections. In this case it works it also has a positive effect that a possibly existing slight misalignment of the interconnected Leg of the bracket is optically bridged.

In a preferred embodiment, the After machining, welding beads have the shape of a square with two parallel to each other running sides, ö-sren aostand from each other is larger than the diameter of the round steel material.

Particularly simple tools can be used if the machined weld beads are square Have outer contour.

For reasons of strength, the vertices of the retaining projections should be at a distance from the through the Limb legs extending central plane be arranged.

The invention is explained in more detail below with reference to a preferred embodiment shown in the drawing.
It shows

Fig. 1 is a plan view of a chain link of a conveyor chain and

F i g. 2 shows a section along the line Ii-I I in F i g. 1.
In Fig. 1, 1 and 2 are two U-shaped brackets, the ends of which are connected to one another by welding and form the round steel members 3 with a pitch t which is very large, ie about ί = 10 i /. In the area of the connecting parts there are machined weld beads 4 which have a square outer contour (cf. FIG. 2); 2 shows, somewhat larger than the diameter d of the round steel material of the links 3. In particular, the corners of the welding beads 4 form retaining projections 9, the apexes 10 of which are also

the limbs are running Mittelnet, what tension-wise gun- [η Fig.2 is with 11 a clamping shell
that is attached to the conveyor chain

lierzu 1 sheet of drawings

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Claims (8)

Patent claims: 1. Conveyor chain with welded round steel links with a large pitch, which are in the area of their link legs each with at least one retaining projection for position adjustment and locking from on the round steel members attachable components are provided, characterized in that the retaining projections (9) from the by machining Machining in a defined shape converted welding beads (4) are formed. 2. Conveyor chain according to claim 1, characterized in that the round steel links (3) each consist of two U-shaped brackets (I ₁ 2) and the machined weld beads (4) located at the connection points of the brackets form the holding projections (9). 3. Conveyor chain according to claim 1 or 2, characterized in that the machined welding point «(4) has the shape of a square with two paraiiei mutually extending sides (5/6 or 7/8), the distance from each other greater a! s is the diameter (d) of the round steel material. 4. Conveyor chain according to claim 3, characterized in that two sides (7/8} of the cutting machined weld beads (4) arranged parallel to the central plane running through the limbs are. 5. Conveyor chain according to claim 3 or 4, characterized in that the distance between each opposite sides (5 / S or 7/8) of the square are equal to each other 6. Conveyor chain according to claim 5, characterized in that the machined Weld beads (4) have a square outer contour to have. 7. Conveyor chain according to one of claims 1 to 6, characterized in that the vertices (10) of the holding projections (9) arranged at a distance from the central plane extending through the limb of the limbs are. 8. Conveyor chain according to one of claims 2 to 7, characterized in that its pitch (t) is equal to or greater than ten times the value of the diameter (d) of the round steel material of its links (3).