Abstract:
A hydraulic apparatus (1) for the receiving and returning to pressure circulation of overflow oil of a hydraulic motor comprises: a tank section (26), which comprises an air-tight liquid space (23) that is in connection with at least one connector (21), the volume of which liquid space (23) is restricted by at least one movable wall (19), and a drainage section (25), which has been configured in the first operating stage (I) to accomplish a reduction in the volume of the liquid space (23) by moving the wall (19) and in the second operating stage (II) to release the wall (19) to enable an increase in the volume of the liquid space (23). Moreover, the hydraulic apparatus (1) has been arranged in the first operating stage (I) to return overflow oil to the hydraulic circulation (55) through a non-return valve (45) and in the second operating stage (II) to receive overflow oil from the hydraulic motor (49) through a second non-return valve (46). Also includes a parallel independent claim concerning a work device usable with pressure circulation and equipped with a hydraulic motor.
Abstract:
Hydraulic equipment of the type that can be fixed to a moving arm of an operating machine. The equipment has a support structure connected or connectable to a moving arm of an operating machine, at least one hydraulic motor for the rotation of a working element, a feed pipe connected or connectable to a hydraulic circuit of the supporting operating machine to supply a flow of working fluid to the hydraulic motor, and a drainage unit for the drainage of working fluid from the hydraulic motor. The equipment may optionally include a pressure detector in the drainage unit and a shut-off valve operationally associated with the pressure detector in such a way as to interrupt the flow of working fluid to the hydraulic motor when predetermined pressure conditions are detected.
Abstract:
Die Erfindung betrifft eine Hydraulische Steuerungsvorrichtung (1) für eine Kupplung und/oder für ein Getriebe eines Kraftfahrzeuges, vorzugsweise für ein Doppelkupplungsgetriebe, mit mindestens einem Aktor (2, 3, 4, 5, 6, 7), mit einem Druckspeicher (18) und mit einem Druckabbauventil (20, 21), wobei der im Druckspeicher (18) gespeicherte Druck über das Druckabbauventil (20, 21) abbaubar ist. Eine einfache und kostengünstige Möglichkeit wird geschaffen, einen Druckabbau mit einer hydraulischen Steuervorrichtung (1) insbesondere für ein Doppelkupplungsgetriebe vorzunehmen, nämlich dadurch, dass mindestens zwei hydraulische Teilsysteme (22, 23) vorgesehen sind, wobei jedes Teilsystem (22, 23) mindestens einen Aktor (2, 3, 4; 5, 6, 7) aufweist, wobei das Druckabbauventil (20, 21) mit jedem der Teilsysteme (22, 23) strömungstechnisch verbunden ist und wobei, wenn die Teilsysteme (22, 23) einen Mindestdruck unterschreiten, der im Druckspeicher (18) gespeicherte Druck über das Druckabbauventil (20, 21) abbaubar ist.
Abstract:
In one embodiment, a method is provided for performing a fluid process within a machine having a fluid system including at least two reservoirs of different types of fluids. The method includes the steps of identifying a first reservoir for use in performing a fluid process; (a) adjusting a configuration of a valve system operatively coupled to the fluid system to permit a fluid evacuation process to be performed for the reservoir, (b) subsequently performing the fluid evacuation process for the reservoir, (c) subsequently adjusting the configuration of the valve system to permit a fluid refill process to be performed for the reservoir, (d) subsequently performing the fluid refill process for the reservoir; and, subsequently identifying an additional reservoir and performing at least one of the steps (a), (b), (c) and (d) for the additional reservoir, wherein the first reservoir includes a fluid of a type which is different from a type of a fluid of the additional reservoir. Various system and computer-readable media embodiments are also provided. It is emphasised that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject-matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
Abstract:
[PROBLEMS] To provide a work machine comprising a starter for starting a prime mover from the pressure oil in a hydraulic actuator for driving a front work machine can be drained without providing a special hydraulic apparatus. [MEANS FOR SOLVING PROBLEMS] The work machine comprises a boom cylinder (34) for driving a front work machine (35), a flow control valve (8) for controlling the flow of the pressure oil supplied to the boom cylinder (34), and a pilot valve (11) driven by an engine (1) and outputting a pilot operation signal for switching the flow control valve (8) using the pressure oil delivered from a pilot hydraulic pump (10) as the primary pressure. The work machine is further provided with a fuel stop switch (31) performing supply stop control of fuel for driving the engine (1) and a switch (30) for keeping a starter motor (2) for starting the engine (1) in a drivable state depending on fuel supply stop control of the engine (1) by the fuel stop switch (31).
Abstract:
A fluid transfer system includes elongated conduits connected at one end with couplings to a plurality of fluid reservoirs of a machine or engine and at the other end with a control valve for selective quick evacuation. Evacuation is powered by a pump operably connected to the control valve. Another embodiment includes a first pump for the evacuation of an engine oil reservoir and a second pump for the selective evacuation of transmission and hydraulic fluid reservoirs. The control valve and the pumps may be operated remotely through electrical switches on brackets or on a service panel. Associated methods of removing fluids and replacing fluids from a plurality of reservoirs includes coupling the fluid transfer system to the reservoirs.
Abstract:
The input element comprises a body (2) provided with openings respectively (P) connecting to the pump, (6) the reservoir and (LS) enabling information return to the pump. The body comprises a bore (3) enabling communication between the openings (P) and (T) which are respectively joined to the pump and the reservoir, whereby a piston (8) is mounted therein in order to establish said communication or not, whereby an extremity thereof is subjected to the pressure of the pump and the other extremity is subjected to pressure (LS) for information return and subjected to the pressure of a spring (7). The pressure exerted by the spring (7) is substantially equal to the lift pressure of the pump and the piston and/or body (2) comprise openings (8) for communication of the chambers (4,5) disposed on the pump side (P) and reservoir side (T) when the distributor is in a rest position.
Abstract:
Various fluid system and fluid operation embodiments include a first valve structured to permit fluid flow therethrough in response to application of positive pressure at an inlet of the first valve with an outlet of the first valve in fluid communication with a portion of a fluid system; a second valve has an outlet in fluid communication with the inlet of the first valve, and the second valve is structured to permit fluid flow therethrough in response to application of negative pressure at the outlet of the second valve; and, an inlet/outlet port in fluid communication with the inlet of the first valve and the outlet of the second valve at a common refill/evacuation location. Systems and methods incorporating electronic valves, configurations to multiple check valve assemblies, and modules of valve assemblies are also provided herein. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.