SU835844A1 - Device for automatic control of locking of vehicle differential gear - Google Patents

Description

DESCRIPTION

Inventions

TO AUTHOR'S CERTIFICATE

Union of Soviet

Socialist

Republics

(835844 (61) Supplementary to the author certificate - (22) Declared 07/27/77 (21) 2513049 / 27-11 with the application attached - (23) Priority - (43) Published on 07/07/81 Bulletin No. 21 (45 ) Date of publication of the description 11.06.81 (51) L.A. Cl. ³ B 60 K 17/20 (53) UDC 629.113 (088.8)

(72) Authors inventions J »- ·’ * ··· - · - ··· V.F. Korol, G.G. Sumtsov, A.T. Scoibeda j; and Π. P. Artemyev ‘ (71) Applicant Belarusian Order of the Red Banner of Labor. ,, Polytechnic Institute |

(54) AUTOMATIC CONTROL DEVICE FOR VEHICLE DIFFERENTIAL LOCKING

The invention relates to ικ vehicles, mainly to wheeled tractors.

A device for automatically controlling the differential lock of a vehicle, comprising a control valve, mechanically connected to a movable steering element and hydraulically connected to a hydraulic pump, a differential lock clutch and through a drain hydraulic line to a hydraulic tank [1].

A disadvantage of the known device is the insufficient durability of the vehicle transmission due to the circulation of power that occurs when the lock is on.

The aim of the invention is to increase the durability of the transmission of the vehicle, a.

This goal is achieved by the fact that the device is equipped with an electro-hydraulic pressure reducing valve and two tachometric sensors mechanically connected to the corresponding drive wheels of the vehicle and electrically connected to each other and with the electromagnet electrohydraulic pressure reducing valve, the latter being installed in the drain hydraulic line.

The drawing shows a diagram of a device for automatic control of differential lock.

It includes two tahometriche ⁵ Sgiach sensor 1 associated with the driving wheels 2, wherein one pair of unipolar leads are connected directly to each other, the other - through the coil electrohydraulic pressure reducing valve 3, PE10 regulates the pressure generated by the hydraulic pump 4 to the power cylinder 5, the control sleeve 6 differential lock, which on differential 7 provides the necessary. Locking moment.

The valve 8 is connected to one of the movable elements 9 of the steering. There is a switch 10 for turning on the automatic lock.

The device operates as follows 20 ZO'M.

With the straight-line movement of the self-propelled machine, the hydrodistributor 8 is in the locked position. If the difference in the revolutions of the drive wheels 2 is small, then the voltage difference between the tachometric sensors 1 is insignificant, and therefore the force developed by the valve 3 electromagnet is small, and therefore the pressure in the system is small. This provides a small 30 moment of blocking the drive wheels 2. If there is a greater (difference in speed (drive wheels 2, the voltage difference of the tachometric sensors 1 is large, and therefore the force developed by the valve 3 electromagnet, and therefore the pressure in the system is large, in connection with this, greater moment of blocking of the driving wheels 2. When the position of the guides is changed, the wheel from the position corresponding to the rectilinear movement, the distributor 10 moves to one of the extreme positions, providing unloading of the hydraulic pump ca, so the torque transmitted by clutch 6 locking differential decreases. Thus follower 15 is provided a locking torque control principle in accordance with the actual slip of the drive wheels.

Claims (1)

Claim A device for automatically controlling the differential lock of a vehicle, containing a hydraulic identifier, mechanically connected to a movable steering element and hydraulically connected to a hydraulic pump, a differential lock-up coupling and, via a drain hydraulic line, to a hydraulic tank, with the fact that, in order to increase the durability of the vehicle’s transmission, it is equipped with an electrohydraulic red, optional | M valve and two tachometric sensors mechanically connected to Compliant .kolesami leading vehicle and electrically interconnected and with the electromagnet elektro.gidravlicheskogo reducing valve, the latter being installed in the drain gidroliiii. Source of information taken into account during the examination: 1. Copyright certificate of the USSR L 612838, cl. In 60 K 17/20, 1976 (prototype).