| 摘要 |
Testbench for study of friction force in slides of trolley of freight car has rails, fixed platform, -like standpipe fixed on basement, organs for vertical and horizontal loading, rotary with respect to vertical axis roll support, control panel, device for registration of results of studies. On fixed basis placed lower that the level of rail heads in vertical axis of testbench organ of vertical loading is mounted, on movable section of that one basis of support roll bearing is rigidly fixed, in its center there is another roll bearing that serves as center of turn of movable part of support bearing that has rod and holders and middle part of axles of wheel pairs of trolley, and cross rod of -like standpipe imitates design of pivot rod of car case with toe, states, upper part of support bearing is arranged with possibility of turn with respect to vertical axis with body of horizontal load with double action fixed on non-rotary part of support bearing, and its rod is hinged to rotary part of support bearing, at that to fixed part support is fixed for contact with boss of movable part of the bearing position of which is determined by angle with top at axis of trolley pivot determined by area of contact between skates and end switch of body of horizontal loading, besides that the testbench is equipped with device for centering and fixation of trolley with respect to vertical axis of testbench and device for trolley pushing out from testbench. |
