Device for producing blows in a percussion drilling machine

申请公布号：: DE3505442(A1)
申请号：: DE19853505442
申请日期：: 1985.02.16
申请公布日期：: 1986.08.21
申请人：: LICENTIA PATENT-VERWALTUNGS-GMBH
发明人：: PREIS,ERICH
分类号：: B23B45/16;B25D16/00;(IPC1-7):B28D1/14
主分类号：: B23B45/16
摘要：: The subject-matter of the invention is a device for producing blows in a percussion drilling machine by means of two ratchet discs, of which one is attached to the axially movable drilling spindle, which is under the effect of a restoring spring and carries a gear which meshes with a drive gear. The object of the invention is to develop a device of this type in such a way that, with minimum outlay, it also permits a high number of blows even at low rotational speeds of the drilling spindle. This object is achieved according to the invention in that the second mating ratchet disc (8) interacting with the ratchet disc (17) firmly arranged on the drilling spindle (9) sits in a rotatable manner on the drilling spindle, extended to the rear and mounted here, and is combined with a gear (7) which meshes with a pinion (4) which is integrally formed on the drive shaft (3) and at the same time meshes with a gear (5) for the drive of a layshaft (6) on which the drive gear (15) for the drilling-spindle gear (16) is arranged. <IMAGE>