PART OF THE
WIRE LINK BELT - TECHNICAL INFO
OB Wire link Belts are basically constructed from the pre-formed wire links threaded onto the cross bars and reinforced with reinforcing plates usually placed in rows between the eyelets (sections).
The fixation of the wire link in the width direction of the belt can take place in several ways. As can be seen on the images above, the fixation of the wire links in width direction can be done in 6 different ways. The choice of fixation depends on the product and the manufacturing process. The most common methods of fixation are the single or double under welded wire (EO/DO) and the fixation by means of the links themselves (GE). The top welded wires (BB) are used in sieving applications and as carrier rods in slightly ascending transports.
OB-KK Wire link belt with welded edge butts
The drawing above shows the basic construction of a wire link belt with end edges. The pitch of the links (p) indicates the size of the belt. The desired passage of the belt is obtained by placing the links at a certain distance from each other (pitch s). The stitch can be chosen from a number of preferred values. The pitch can be freely selected, depending on the design and construction. Pitch, and other measurements can be found on the basic list.
In connection with the tensile strength of the belt, one or more rows of plates are distributed evenly across the width of the belt. Both sides are usually provided with a double row of plates. It is customary to provide the belt support under these rows of plates. (size pictures: e, h, w)
*The distance between the rows of plates is approx. 150 – 600 mm (size y) (depending on the load and loading of the belt)
** Tolerance on the width (b**) of the belt is: 0 – d. (link diameter).
***Sizes e/h are the dimensions of the plates that can be attached centrically but also eccentrically to the cross bars (extra wear layer underside)
OB – RK: Wire link belt with roller edges
The drawing on the right shows the construction of a wire-link belt with rolled edges. The construction of OB-RK is equal to that of the OB-KK. The belt has the same basic sizes and designs in wire link fixation. The difference is the role between the 2 outermost plates.
OB – HK: Wire link belt with Chains on the edges
The drawing on the right shows the construction of a wire-link belt with chain edges. The construction of OB-HK is equal to that of the OB-KK. The belt has the same basic dimensions and link fixation. The difference is that the outer rows of plates have been replaced by a hollow bolt chain. This makes the pitch (p) of the belt related to the chain pitch.
Link belts with rollers and chain edges are especially used where:
– a reduction in friction is desired.
– an extra guarantee on synchronization is requested.
– in structures with negative kinks.
De various sizes are listed in the basic listing.
Hollow bolt chains are available in roll version (as shown in the picture) and in bus version. Eea depending on stitch and chain type.
Many variants are possible. Commonly used chains are the ASA, ANSI B.29.1 (transport), DIN and ISO chains in the pitches ¾”, 1”, 1.5”, 2”, 50 mm, 3” , 75mm and 100mm.
Chains are available in stainless steel or steel.