6-LEVER SHOCK MECHANISM WITH LARGEST CONNECTOR

摘要

The invention relates to articulated link mechanisms with "special provisions" and can be used as an actuator in vibro-shock machines used in the mining industry, road construction and installation, and other work. The six-link percussion mechanism with the largest connecting rod consists of a driving crank (1) with an axis of rotation at point A, a connecting rod (2), a driven crank (3) with an axis of rotation at point D, a connecting rod (4), a rocker arm (5) with support at a point F and struts (6). All points of support (rotation) of the links are on the same line and the lengths of the links of the mechanism have the following relationships: The rotational movement of the leading crank (1) is transmitted via a connecting rod (2) to the driven crank (3) with a variable gear ratio, the maximum and minimum values of which correspond to " special provision "mechanism, in which all links are built into one line. The rotational movement of the driven crank (3), which is variable in value, is converted by means of the connecting rod (4) into the incomplete rotational (oscillatory) movement of the rocker arm (5) around point F. In this case, in the “special position”, the gear ratio of the angular velocities of the rocker arm (5) and the crank (3) ) is abruptly transformed in magnitude (from maximum to minimum) and direction, which is accompanied by the impact of a massive rocker arm on the instrument. Due to the fact that the movement from the leading link (crank) to the driven link (rocker) is transmitted by a two-stage conversion (two-stage gear ratio), the effect of a massive rocker arm hitting the tool is significantly enhanced without leading to overloads in the hinges of the mechanism.