12.5.1. Principle of work of GUR
Principle of work of GUR
Design and principle of work of GUR
In a case of the steering mechanism there is a steering mechanism assembled, a zolotnik of management and the working cylinder. Via the torsion (2) a steering shaft (1) it is elastic it is connected with the screw (3) and it is rigid - with zolotniks (4 and 5). Zolotniks are built in the distributor case in cross situation concerning a screw axis. Communication between the piston (6) and the screw (3) is carried out through the closed ball chain. At a screw provorachivaniye the circulating tube (7) takes away balls from one end of a chain and moves them by other end. The piston (6) is connected through gear gearing to the shaft (8) having the gear sector. The special profile of tooth of the sector of a shaft does possible elimination of a side play by means of the adjusting screw.
In the neutral provision of zolotniks (4 and 5) the oil given by the pump circulates in the mechanism of steering and through the inlet and final operating edges opened has free access in the cylinder.
The hydraulic drive enters work when zolotniks find a neutral way out. It occurs when the effort from a steering wheel or from a bipod of steering is transferred to the screw through a shaft with the gear sector and the piston. At the same time the torsion (2) acts as a binding element. Its flexible part has ability to be deformed and again to return zolotniks after removal of effort from a steering wheel in neutral situation. At a conclusion of zolotniks from neutral situation oil goes as well to the working cylinder, – it carries out power support in movement of a shaft of steering and counteraction at the blows caused by roughness of the road.
Steering wheel in neutral situation: from the bladed pump oil flows in the distributor case, via inlet channels (9 and 10) – to radial channels (11 and 12). From there it flows further through connecting openings to the right and left cavities of the cylinder, and then via open final channels (13 and 14) back in the tank.
The steering wheel is turned on / counterclockwise: the zolotnik (4/5) moves to the right, and the inlet channel (9/10) opens. The zolotnik (5/4) moves to the left, and the inlet channel (10/9) is closed. Thus oil gets into the right/left cavity of the cylinder, is pushed out from the left/right cavity of the cylinder and comes back to the tank.