Hydraulic system to produce a rectiline alternative motion of a driving element and apparatus to produce impacts activated according to such system. (Machine-translation by Google Translate, not legally binding)

摘要

Hydraulic system for producing an automatic rectilinear reciprocating movement of a driving element, characterized in that it consists of a hydraulic circuit comprising the following main elements: - a main piloting distributor, which governs the reciprocating movement of the driving element during its travel through an operating zone corresponding to the active or descending and non-active or ascent races, with said distributor passing between two different main states, - a secondary piloting distributor, capable of adopting two different main states by the action of the driving element, and which in turn said secondary distributor modifies the state, of the main distributor, - an auxiliary pilot distributor, capable of adopting an open position when the driving element is in a stop zone corresponding to a lower position than the one reaching the end of the active stroke in which area this distributor achieves not there is energy consumption, and a closed position when externally moving the driving element to the operating zone, - a driving element that moves alternately inside a cylinder comprising an upper chamber in which the driving element has a greater thrust section and a lower chamber in which the thrust section is smaller; whose impeller in its alternative movement can travel through an area of operation and one of unemployment, so that when displacing it externally from the zone of unemployment to that of operation, the automatic start-up of the system occurs, and it stops when returning to the zone of unemployment, during its permanence in which there is no consumption of energy although the system is permanently connected to the power source, - a conventional pressure limiting valve, disposed in the return line of said circuit, regulates the speed of the driving element in the non-active stroke and therefore the frequency of its movement; y - a conventional oleohydraulic accumulator, which provides an increase of fluid under pressure in the active stroke and which accumulates it in the non-active stroke, the scheme of said hydraulic circuit being the one that follows - the pressurized fluid supply line is connected: 1) to the upper chamber through the main distributor which is connected in turn to the return line to the supply tank through the pressure limiting valve, 2) a the lower chamber directly, 3) the secondary distributor which communicates with the main distributor, and 4) the auxiliary distributor which is also in communication with said supply line downstream of the main distributor; further said main distributor is connected to the supply line directly connected to the lower chamber, and the secondary distributor is also connected to the return line, and the accumulator is connected to the supply line upstream of the main distributor; The operation of the system being as follows: - the driving element being in the stop zone because the auxiliary distributor communicates the supply line with the return line, when moving it to the operating zone, it will start the ascent or inactive race through the operating zone due to the fact that pressure in the lower chamber and not in the upper chamber because it is communicated to the return line through the main distributor, almost at the end of the ascent stroke the driving element modifies the state of the secondary distributor which in turn modifies the condition of the distributor main, which puts the feeding line in communication with the upper chamber giving it pressure, which results in a resultant of downward forces because the driving element in said upper chamber has a greater thrust section than in the lower chamber, which causes the descent or active race. (Machine-translation by Google Translate, not legally binding)