Device for achieving a releasable interference fit between a component with a cylindrical bore and a component inserted into this bore

摘要

A detachable connection comprises a cylindrical part (3) secured in a cylindrical bore (4) in a part (1) by the use of an expander pulling bolt (6) which is introduced into a cylindrical recess (5, 20) in the part (3) to expand the latter. The bolt (6) comprises a pressure region (7) of relatively larger, constant diameter and a guide region (8) of relatively smaller diameter, compared with the diameter of the recess (5, 20) and also a conical expander region (9) joining the pressure and guide regions. The arrangement is used in securing adjacent end members (22, Fig. 6) of a traction chain of an excavating vehicle; securing a threaded axle in a seat; and securing an axle in a train wheel hub. Bolt (6) is inserted in the recess, region 8 first, by a pressing tool, or by hammering. Bolt 6 is pushed out of the recess by a socket tool inserted through a hole (10) in bolt (6) to engage a socket (18) in a screw (15) to displace the screw (15) towards bolt (6) to press on its guide region (8). IMAGE