CS242829B1 - Device for regulating the position of the off-road part of the vehicle - Google Patents

Abstract

The solution concerns a device for maintaining the horizontal position of the cabin and the steering mechanism in agricultural machines. The non-chassis part is connected to the chassis by means of bellows or cylinders with a pressure medium, into the supply of which electrically controlled valves are included, which are controlled by a position switch consisting of a non-conductive chamber, contacts and mercury. When the vehicle tilts, the mercury overflows and connects the current to the contacts. The invention can be used in off-road vehicles.

Description

The invention relates to a device for automatically maintaining the position of the off-chassis part of a vehicle, in particular for stabilizing the horizontal position of the cab and the working device of agricultural machines.

So far in agricultural machines, the cab and the working gear are attached to the chassis by joining either a fixed or rubber block, and when driving on a slope the raimop-chassis is tilted together with the chassis. malfunctions of this mechanism. Complex hydraulic devices for stabilizing the horizontal position of the off-chassis superstructure are known for combine harvesters. These devices are expensive to manufacture and maintenance-intensive due to their complexity.

These problems are overcome by a device according to the invention in which the bogie is connected to the off-chassis by means of bellows or cylinders, filled with a pressure medium, the supply of which comprises electrically operated valves, the electrical current being connected to these valves by means of a position switch. from the non-conducting chamber _{f of} contacts and mercury, it is pivotally connected to the off-chassis part of the vehicle.

The device according to the invention is characterized by simplicity and provides a guarantee of functional reliability. It allows the suspension of the driver's cab against the chassis, thus improving the operator's working environment.

242 829

FIG. 1 is an exemplary embodiment of a device according to the invention; FIG. 2 is an axial section showing an example of connecting a position switch to an off-vehicle part of a vehicle. Bellows or cylinders 2 filled with pressure medium 4, which in the embodiment according to the invention is compressed air supplied from the vehicle air system, are fixed between the vehicle chassis 2 and its off-chassis part 1. In another alternative embodiment, a pressurized liquid could be used. The pressure medium 4 is guided by a supply line 2 provided with electrically operated valves ^and a discharge line 13 provided with electrically operated valves 16. The discharge pipe 11 is further provided with a regulating throttle valve 2 which adjusts the discharge time of the pressure medium 4 so that the device responds only to longer deflections and does not vibrate off the undercarriage part. via a position switch 12,13,14 consisting of a non-conducting kidney-shaped chamber 12, three contacts 13 and a mercury drop 14. The position switch 12,13 · 14 is connected to the off-carriage part 1, pivotally, via a braked shaft 13 provided with a hand lever 16. By rotating the shaft 13 by means of the hand lever 16, the position switch 12,13,14 is set to the controlled position corresponding to the desired position of the off-carriage part 1. In the case of flat driving, the position switch 12,13,14 is horizontal and mercury 14 is in the recess around the middle contact 13 and the electrical connection circuit is not closed current to the electrically operated valves 5, 5 which remain closed. In the case of driving on a slope, the position switch 12, 13, 14, mercury 14 is also inclined with the off-chassis part between the middle and extreme contacts 13 and the circuit in the electrical supply 11 and the corresponding electrically operated valves 3 are closed. 6 will open. By opening the electrically actuated valves 6, 6, the pressure medium 4 flows into the bellows or cylinder on the underside of the heel and is discharged from the bellows or cylinder 11 on the upper heels until the position of the off-carriage portion 11 is aligned to the horizontal position. , 14.

F

The device according to the invention can be used in all off-road vehicles.

Claims (2)

SUBJECT OF THE INVENTION 242 823 An apparatus for regulating the position of an off-chassis part of a vehicle, characterized in that its off-chassis part (1) is connected to the chassis (2) by means of bellows or cylinders (3) filled with pressure medium (4). 6), wherein a position switch (12.1 $, 14 · / ·) is included in their connection to the power supply (11) Device according to claim 1, characterized in that its position switch (12,13,14) consisting of a non-conducting chamber (12) of contacts (13) and mercury (14) is pivotally connected to the off-chassis part (1).