| 摘要 |
FIELD: machine building. ^ SUBSTANCE: loading bench includes table, loading lever on symmetrical cantilevers of which there installed are weights, steering machine attachment assemblies, one of which is arranged on bracket rigidly fixed on the table, and the other one is fixed on loading lever. Loading bench includes additional detachable weights of variable mass, and on ends of cantilevers of loading lever there arranged are support surfaces the cylindrical generatrixes of which are coaxial to rotation axis of loading lever; besides, additional detachable weight is connected to the corresponding support surface by means of an elastic belt one end of which is equipped with a fastener installed on support surface at distance A from horizontal plane passing through rotation axis of loading lever at middle position of steering machine (SM) stock, which is determined by the following formula: where A - distance from the line of belt fastening by means of fastener on support surface to horizontal plane passing through rotation axis of loading lever at middle position of SM stock; R - radius of cylindrical generatrix of support surface; - turning angle of loading lever, and the other free end of elastic belt is equipped with a scuff plate for removable weight; at that, length of arc of cylindrical generatrix of support surface is determined by the following formula: where B - length of arc of cylindrical generatrix of support surface; R - radius of cylindrical generatrix of support surface; H - SM stock stroke; r - distance from rotation axis of loading lever to SM stock attachment assembly on loading lever. ^ EFFECT: simpler design of loading bench. ^ 3 dwg |
