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Hydraulic Controls
Hydraulic Controls


A hydraulic control is described. The hydraulic control proposed herein provides, besides the already existing items, one pilot pressure sequence valve, one pressure vent valve with gauged vent for flux control, and one externally piloted stop valve.

A directional control with a pressure sequence valve and a pressure compensation valve is proposed, to allow the pressure induced in the telescopic hydraulic cylinder by the action of the compacting work to be constant and independent in the course the different stages/areas of the telescopic cylinder. This pressure varies according to the force of compacting and the area of the telescopic cylinder in operation. As a result, a homogeneous compacting of the residue is obtained. However, the "rubber effect" can still occur this way. The hydraulic system, already known in the state of the art, includes: hydraulic pump; hydraulic fluid tank; hydraulic actuating cylinders; and telescopic hydraulic cylinder. The request on privilege of invention described hereon aims at solving the problems present in the state of the art, thus proposing a hydraulic directional control. The hydraulic directional control proposed hereon provides, besides the already existing items, a piloted pressure sequence valve, a pressure compensation valve with a calibrated vent to control the flow and an externally piloted retention valve. The request hereon is about privilege of invention of a hydraulic control used in trucks and refuse compactor.

The refuse collectors and compactors in use in the market show a few problems related to the ability to compact refuse, that is, problems in getting a higher density of refuse per cubic meter of container during the collection operation. Since the means of transmission of force and power used to drive the compacting mechanism is fit within the collection vehicle, a hydraulic system uses the increase of hydraulic pressure in the main work to get a greater hydraulic power and, as a result of it, a greater force in compacting the refuse. As a mechanic resistance limits the container, the truck structure may be damaged in case high forces overcome such resistance. It also occurs that both the uneven distribution of the residue cargo in the container and the application conditions, together with the characteristics of the hydraulic products, such as a telescopic cylinder and the cylinder control directional valve, cause the driver some discomfort. Still, due to this lack of homogeneity, the residue is irregularly compacted and accumulated in a few points of the container, thus making the cargo to be unevenly distributed and causing problems in both the front and rear axles of the vehicle.



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Hydraulic Controls, Indian Manufacturer, Indian Supplier, Indian Exporters