ASME B29.22-2001 pdf download
ASME B29.22-2001 pdf download.DROP FORGED RIVETLESSCHAINS, SPROCKET TEETHDRIE CHAIN/DRIVE DOGS.
The drop forged rivctlcss chain has widespread use in many industries on trolleys, scrapcr flights, assembly, and similar conveyors. Because materials do not tend to pack in its open structure, the drop forged rivetless chain is used extensively for flight conveyors. Its design permits both horizontal and vertical operation over irregular routes, making it particularly acceptable for trolley conveyor service.
2 DEFINITIONS
drop forged rivetless chain: chain made from drop forged steel parts that are heat treated and are proportioned for high strength and comparative light weight. Its simple design permits assembly or dismantling by hand and this chain is available in three general types as illustrated and described (see regular drop forged rivetless chain, X-tvpe chain, and modified X-tvpe rnetless chain). Numerous attachments are available to suit a wide variety of applications including trolley conveyor service.
pin. part forged symmetrically with T-heads on both ends that lock into the sidehars (see Fig. 1).
regular dmp frged ri’etless chain: chain used for general applications where minimal side flexing is required (see Fig. 2). Attachments are available for mounting on center links or on extended pins.
sidebar: part made with a center panel that acts as a shield to reduce material falling through the link and provides strength. The center panel is provided with a center drainage hole (sec Fig. 3).
9 CHAIN ASSEMBLY
See Fig. 5 and Tables 2, 3, and 4.
10 SPROCKETS
Two sprocket tooth forms arc included: Forms A and B. The major difference between these two forms is in the method of generating he tooth form. Form A produces a curved tooth face and Form B a straight tooth face. Either form may be used. See Tables 5, 6, and 7, and Figs. 6 and 7.
10.1 Sprocket Tooth Form Data
Root diameter (Dr), pocket radius (R,)). and outside diameter (D0) must not exceed the values obtained by the formulae. Oversize dimensions may cause improper chain and sprocket interaction and excessive chain loads (see Fig. 6).
In some cases the outside diameter (Di.,) may he limited by special attachments mounted on the chain. For this reason, the outside diameter (D0) should he checked to assure that interference does not exist. D0 obtained by the formula should be rounded off to the next smallest 1/8 in. (3 mm).
Chain clearance circle (C() established by the formula is the maximum and will provide clearance under most conditions. However, the value obtained by the formula should be checked to assure that a given hub diameter does not interfere with chain attachments.
