Abstract

The present invention relates to a drive unit for rotating and hydraulically controlling a reciprocating tool, and a method for controlling such a unit, the unit comprising a hydraulic motor (3) for driving the tool, an oil tank (4), a pump (1) for controlling the flow rate and the pressurisation of the oil from the tank in order to drive the hydraulic motor, two valves (2A, 2B) for regulating the flow rate of the oil upstream of the hydraulic motor, a sensor (6) for measuring the speed of rotation Rmot of the hydraulic motor, a sensor (7) for measuring the pressure Pmot upstream of the hydraulic motor, means (8) for displaying the rotation speed Rmot, a first alarm, and a control unit (5). The invention also relates to an agricultural machine including the drive unit and a method for controlling the machine.

IPC Classes  ?

• F16H 61/4017 - Control of high pressure, e.g. avoiding excess pressure by a relief valve
• F16H 61/4148 - Open loop circuits
• F16H 61/47 - Automatic regulation in accordance with output requirements for achieving a target output speed
• F15B 11/00 - Servomotor systems without provision for follow-up action
• F15B 11/02 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member
• F15B 19/00 - Testing fluid-pressure actuator systems or apparatus, so far as not provided for elsewhere

Goods & Services

Couplings for tractors; structural elements of couplings for tractors; vehicles for transporting loads.

Abstract

A device for hitching and lifting an agricultural tool, including a frame fastened to the agricultural machine, a first arm articulated on the frame with a first tool hitch at one end, at least one first jack connected at one end to the frame and at the other to the arm, an extent of the travel of the jack allowing the end of the arm for bearing the hitch to successively pass through a first minimum low position, a second maximum high position, and a third retracted position, where a detection unit that detects a position of the end of the arm can deactivate the supply of the jack when the end reaches the second position, and a bypass controller can bypass the controller of the detection unit to reactivate the supply of the jack.

IPC Classes  ?

• A01B 59/06 - Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors
• A01B 63/108 - Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means characterised by the location of the mounting on the tractor, e.g. on the rear part on the front part
• A01B 59/048 - Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines pulled or pushed by a tractor having pulling or pushing means arranged on the front part of the tractor
• A01B 63/111 - Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements

Goods & Services

Guiding interface between a hydraulic lift for a tractor and a coupled tool (component part of tractors and coupled tools).

Goods & Services

Component parts specially adapted for hydraulic lifts used with tractors, namely, a guiding interface in the nature of an assembly comprising two frames to be positioned between the hydraulic lift and a tractor connected agricultural implement for moving the implement laterally from the tractor, thus compensating for the implement's trailing deviation

Goods & Services

Lifts, namely, mechanical front lifts and hydraulic lifts for tractors Hitches, namely, front 3 point hitches for tractors

Goods & Services

Lifts, particularly front lifts for tractors, hydraulic lifts for tractors; Hitches, particularly hitches for tractors.

Goods & Services

front-end hitches with hydraulic lifting apparatus for tractors

Goods & Services

TRACTOR ACCESSORIES, NAMELY HITCHES, HYDRAULIC THREE POINTS HITCHES, AND AUTOMATIC HITCHES SOLD THEREWITH, AND POWER TAKE-OFF UNITS