SU1495152A1 - Locking mechanism for vehicle differential - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to vehicle engineering and can be used in the multi-wheel drive. The purpose of the invention is to reduce power loss. The drive includes a differential housing 1, the half-axle gears 4 and 9 of which are connected to the coupling half 6 and 7 of the hydraulic clutch. The fluid coupling is filled from the pump 10 through the differential valve 11, which is controlled by sensors 14 and 15 mounted on the output shafts of the differential. The automatic filling (depending on the movement conditions) of the hydraulic clutch allows to reduce power losses and improve the performance of the machine. 2 hp f-ly, 6 ill.

Description

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Claims (3)

SUMMARY OF THE INVENTION 1. Mechanism for locking a vehicle’s differential, comprising a locking device made in the form of a fluid coupling located coaxially to the axle shafts outside the differential housing, characterized in that 5 that, in order to reduce power losses, it is equipped with a differential distributor for filling the fluid coupling and a control system that includes two sensors mounted on the axle shafts, branches, one part of it passes through the hole 34 to the end of the differential 20 inputs of which are connected to the pump, and the outputs of each are connected to the hydrodistributor, and the other through the slot between the end of the liner 28 and the ball 32 to drain. With increasing speed of the shaft 8, the oil pressure in the drilling of the liner 28 does not have time to reach the value at which the ball 32 is displaced, and the total oil flow through the hole 34. increases, which is accompanied by an increase in pressure at the end of the distributor 11. With a further increase in the frequency of rotation of the shaft 8, the total oil flow through the hole 34 due to increased hydraulic losses decreases. Thus, when the sensor is operating in the control circuit of the proposed locking mechanism, at the beginning there is a rise, and then a gradual decrease in pressure. A similar characteristic of the sensor can be obtained if the end of the insert 28 on the side of the ball is muffled, and the cavity in which the piston 30 moves is provided with an opening connected to the drain. The specified hole should be placed so that the piston 3, opens it, coming to its extreme left position. In this case, the ball 32 and the spring 33 can be excluded from the design. The proposed device · allows you to reduce power loss in different accumulator, adjustable throttle and the corresponding control cavity of the valve, while the pressure cavity of the said valve is connected to the pump through a two-position valve. 2. The mechanism according to claim 1, characterized in that each sensor is made of a sleeve rigidly connected to the axle shaft and having on the outer surface at least one scaffold placed inside a stationary case having windows, one of which is intended for communication with the pump, and the other through a throttling hole is connected to a cavity hydraulically connected to a hydraulic accumulator, a pressure reducing valve and through a throttle channel with a control cavity of the differential spool. 3. The mechanism according to claim 1, characterized in that each sensor is made of a sleeve rigidly connected to the axle shaft and having on the outer surface at least one scaffold placed inside a stationary case having windows, one of which designed to communicate with the pump, and the other through a throttle valve. · the hole is connected to a cavity hydraulically connected to a hydraulic accumulator, the cavity of which is connected to the drain when fully charged, and through a throttle channel with a control cavity of the differential spool. ι FIG. 2 Π Π η Ml FIG. 3 / m \ l. TA. Fig y FIG. 6, Compiled by S. Belousko