WO2013150985A1 - 油圧回路及びその油圧回路に用いる複合弁 - Google Patents
油圧回路及びその油圧回路に用いる複合弁 Download PDFInfo
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- WO2013150985A1 WO2013150985A1 PCT/JP2013/059661 JP2013059661W WO2013150985A1 WO 2013150985 A1 WO2013150985 A1 WO 2013150985A1 JP 2013059661 W JP2013059661 W JP 2013059661W WO 2013150985 A1 WO2013150985 A1 WO 2013150985A1
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- valve
- passage
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- tank
- stop valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/042—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in"
- F15B11/0423—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in" by controlling pump output or bypass, other than to maintain constant speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
- F15B13/08—Assemblies of units, each for the control of a single servomotor only
- F15B13/0803—Modular units
- F15B13/0832—Modular valves
- F15B13/0839—Stacked plate type valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/005—Filling or draining of fluid systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/3056—Assemblies of multiple valves
- F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
- F15B2211/3058—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve having additional valves for interconnecting the fluid chambers of a double-acting actuator, e.g. for regeneration mode or for floating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40576—Assemblies of multiple valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
- F15B2211/41509—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and a directional control valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
- F15B2211/41527—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a directional control valve
- F15B2211/41536—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a directional control valve being connected to multiple ports of an output member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/61—Secondary circuits
- F15B2211/611—Diverting circuits, e.g. for cooling or filtering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/85—Control during special operating conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/863—Control during or prevention of abnormal conditions the abnormal condition being a hydraulic or pneumatic failure
- F15B2211/8636—Circuit failure, e.g. valve or hose failure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/863—Control during or prevention of abnormal conditions the abnormal condition being a hydraulic or pneumatic failure
- F15B2211/864—Failure of an output member, e.g. actuator or motor failure
Definitions
- the present invention is a circuit in which hydraulic oil does not circulate only by moving through the circuit, such as a reciprocating hydraulic cylinder circuit used in a sluice drive device or factory equipment, or circulated like a hydraulic motor circuit. Enables maintenance of other hydraulic equipment such as valves, hydraulic cylinders, hydraulic motors, etc. connected to the hydraulic circuit, etc. as needed, or performs various functions such as flushing of the hydraulic equipment operating circuit or emergency operation
- the present invention relates to a hydraulic circuit that can be used and a composite valve used in the hydraulic circuit.
- one of the sluices driven by a hydraulic cylinder is a fall gate device installed across a river.
- This overturning gate device is intended for effective use of river water resources by controlling the amount of overturning of the overturning gate installed across the river, to prevent mixing of seawater and fresh water at the estuary, and installed on the coast to prevent tide Used for purposes.
- Factory equipment includes various types of hydraulic equipment used in machining centers.
- a tipping gate device for effective use of water resources is provided with a pier on both sides of a tipping gate installed across a river, a shaft to which the tipping gate is fixed, and a shaft fixed to the shaft.
- a cam that is rotated by a hydraulic cylinder is installed, and the amount of overturn is controlled by a cam shaft that is rotated by a hydraulic cylinder provided in the pier.
- the machining center has a hydraulic clamper for fixing the workpiece.
- the drive circuit of the reciprocating hydraulic cylinder used as the drive source of the overturning gate is divided by the hydraulic cylinder, and the hydraulic oil (volume of the hydraulic cylinder) necessary for moving the hydraulic cylinder is a circuit. Since it reciprocates inside, the hydraulic fluid in the drive circuit and the hydraulic cylinder is stagnant. Therefore, if the operating time is extended, it will be activated by contaminants such as dust burned into the drive circuit and hydraulic cylinder, or burned debris from the diesel explosion that explodes when air that has entered from the seal part of the hydraulic cylinder is adiabatically compressed in the hydraulic cylinder and explodes. Oil is contaminated.
- hydraulic equipment such as factory equipment also has malfunctions in control equipment such as control valves and speed control valves due to contamination of hydraulic oil contaminated with metal powder due to breakage of the seal or friction between the rotating part of the hydraulic motor and the main body.
- control equipment such as control valves and speed control valves due to contamination of hydraulic oil contaminated with metal powder due to breakage of the seal or friction between the rotating part of the hydraulic motor and the main body.
- the control device that has malfunctioned due to the hydraulic oil contaminated with contaminants (contamination) needs to be disassembled and cleaned to eliminate the cause of malfunction and to be able to control the hydraulic cylinder.
- the control device needs to be inspected and serviced before it malfunctions to prevent malfunction.
- hydraulic equipment such as hydraulic cylinders and hydraulic motors need to be repaired so that the malfunction is eliminated and the malfunction is not caused when the malfunction occurs due to the contamination.
- the technology shown in FIG. 9 has been widely known as a circuit for repair, inspection, maintenance, disassembly and cleaning, or periodic inspection of the control device.
- the hydraulic circuit of Non-Patent Document 1 shown in FIG. 9 is a hydraulic cylinder circuit, but may be a hydraulic motor, and therefore, it is described as a hydraulic cylinder on behalf of hydraulic equipment.
- the hydraulic circuit shown in FIG. 9 includes a lower laminated valve 87 constituted by a maintenance valve 81 and a maintenance valve 86, an upper laminated valve 88 constituted by a speed adjusting valve element 83, a load check valve element 84, and an electromagnetic switching valve element 85.
- a hydraulic circuit in which a hydraulic source 10 and a hydraulic cylinder 60 are connected to a pile-up type stacked valve 80 is shown.
- the hydraulic pressure oil discharged from the hydraulic pump 11 of the hydraulic pressure source 10 of the circuit passes through the maintenance valve body 86 of the lower laminated valve 87 from the manifold 89, passes through the stop valves 81a and 81b of the maintenance valve 81, and passes through the maintenance valves 81a and 81b. It passes through the speed adjustment valve body 82 and reaches the electromagnetic switching valve 85a of the electromagnetic switching valve body 85.
- the supply direction of the hydraulic oil is switched to the hydraulic device 60 by the electromagnetic switching valve 85a, and the hydraulic pressure of the hydraulic device 60 passes through the speed adjustment valves 82a and 82b of the speed adjustment valve body 82 and the stop valves 86a and 86b of the maintenance valve body 86. In this configuration, the cylinder 61 is supplied and discharged.
- the hydraulic oil from the hydraulic source 10 is supplied and discharged by moving the rod 65 of the hydraulic cylinder 61 to the left and right by the operation of the electromagnetic switching valve 85a of the electromagnetic switching valve body 85.
- the conventional technology having such a configuration action is used when various valves of the upper laminated valve 88 in which the precision equipment that is a control device for the pile-up type laminated valve 80 is troubled or inspected and maintained. If necessary, the stop valves 81a and 81b of the maintenance valve 81 and the stop valves 86a and 86b of the maintenance valve 86 are closed to close the circuits of the hydraulic power source 10 and the hydraulic equipment 60, and the pile-up type stacked valve 80. The upper laminated valve 88 is removed for repair, inspection and maintenance.
- the hydraulic circuit using the hydraulic cylinder circuit and the pile-up type laminated valve 80 used in the circuit described in Non-Patent Document 1 described above is a maintenance valve for repairing, checking, and servicing the upper laminated valve 88. Since the circuit is closed by 81 and the maintenance valve 86, there is a problem that the hydraulic cylinder 61 cannot be trial run and the circuit flushed during the repair, inspection, and repair period of the upper laminated valve 88. That is, when repairing, checking, or repairing the laminated valve, it is necessary to stop the hydraulic power source.
- the present invention repairs a laminated valve while driving the hydraulic power source even when repairing, checking, or servicing the laminated valve of the hydraulic circuit, or when repairing or inspecting an operating device to which hydraulic oil is supplied or discharged by the circuit.
- the present invention provides a hydraulic circuit capable of simultaneously performing inspection, maintenance, repair, inspection, maintenance and hydraulic flushing of hydraulic equipment.
- the hydraulic circuit according to the present invention includes a hydraulic source configured by a tank that stores hydraulic oil, a hydraulic pump that is connected to the tank and generates hydraulic pressure oil, and hydraulic pressure that is connected to the hydraulic source and is supplied from the hydraulic source. And a first stop valve and a second valve that are provided close to the hydraulic device and open and close the first supply / discharge circuit and the second supply / discharge circuit to the hydraulic device.
- a multi-function valve provided with a bypass circuit having a third stop valve, disposed on the stacked valve side of the first stop valve and the second stop valve, the hydraulic source, the stacked valve, and the multi-function valve;
- a multi-function valve side first passage comprising a multi-function valve side first stop valve that opens and closes between the multi-function valve and the stacked valve;
- a multifunction valve side second passage having a multifunction valve side second stop valve for opening and closing between the function valve and the stacked valve; a hydraulic pump;
- the pump-side passage having a pump-side stop valve that opens and closes with a layer valve, the tank-side passage with a tank-side stop valve that opens and closes between the tank and the stacking valve, and the pump side
- a pump-side bypass circuit having a pump-side bypass stop valve that branches on the pump side of the stop valve and opens and closes between the multi-function valve side first passage; and the multifunction valve that branches off on the tank side of the tank-side stop valve
- the hydraulic circuit of the present invention includes a hydraulic power source configured by a tank for storing hydraulic oil, a hydraulic pump connected to the tank and generating hydraulic pressure oil, and the hydraulic pressure oil connected to the hydraulic pressure source from the hydraulic source.
- a laminated valve having a direction switching valve for controlling supply / discharge of hydraulic equipment, and a first stop valve provided close to the hydraulic equipment for opening / closing a first supply / discharge circuit and a second supply / discharge circuit for the hydraulic equipment;
- a multi-function valve including a second stop valve, a bypass circuit having a third stop valve arranged on the stacked valve side of the first stop valve and the second stop valve, the hydraulic source, the stacked valve, and the multi-function
- a multi-function valve side first passage comprising a multi-function valve side first stop valve configured to open and close between the multi-function valve and the stacked valve;
- a multifunction valve side second passage provided with a multifunction valve side second stop valve for opening and closing between the multifunction valve and the laminated valve; and a hydraulic pump
- a hydraulic source comprising a tank for storing hydraulic oil, a hydraulic pump connected to the tank and generating hydraulic pressure oil, and a direction switching valve connected to the hydraulic source and controlling supply / discharge of the hydraulic pressure oil to hydraulic equipment
- a laminated valve, a first stop valve and a second stop valve which are provided close to the hydraulic device and open and close the first supply / discharge circuit and the second supply / discharge circuit for the hydraulic device, and the first stop valve and the second stop valve.
- a multi-function valve including a bypass circuit disposed on the laminated valve side of the two-stop valve and having a third stop valve, and a composite valve connecting the hydraulic source, the multi-layer valve and the multi-function valve;
- a multi-function valve side first passage provided with a multi-function valve side first stop valve for opening and closing the composite valve between the multi-function valve and the stack valve, and between the multi-function valve and the stack valve
- a multifunction valve-side second passage having a multifunction valve-side second stop valve that opens and closes, and a pump that opens and closes between the hydraulic pump and the stacked valve
- the pump side passage provided with a side stop valve, the tank side passage provided with a tank side stop valve for opening and closing between the tank and the stacking valve, both the pump side passage and the tank side passage,
- a directional switching valve is provided that switches connection between both the multifunction valve side first passage and the multifunction valve side second passage.
- the hydraulic circuit of the present invention includes a hydraulic source, a composite valve, a stacked valve, and a multi-function valve disposed in a hydraulic device, and the composite valve closes between the stacked valve, the hydraulic source, and the multi-function valve, A function of opening / closing between the pump side and tank side of the source and the multifunction valve is provided, and the multifunction valve has a function of opening / closing the supply / discharge circuit of the hydraulic cylinder and bypassing the supply / discharge circuit.
- the composite valve closes the laminated valve, the hydraulic source and the hydraulic cylinder to separate the laminated valve, so that the laminated valve can be repaired and checked regardless of the situation of the hydraulic cylinder and the hydraulic source. Maintenance can be performed.
- the composite valve constitutes a circulation circuit that connects the hydraulic pump and multifunction, and in this circulation circuit, the multifunction valve shuts off the supply / discharge circuit of the hydraulic cylinder and constitutes a bypass circuit, so that the discharge pressure of the hydraulic pump Flushing for circulating oil can be performed.
- the multi-function valve closes its bypass circuit and connects the hydraulic cylinder supply / exhaust circuit to operate the composite valve to connect the hydraulic power source and the hydraulic cylinder so that the hydraulic cylinder can be operated regardless of the stacked valve. I can do it.
- the hydraulic cylinder can be separated from the supply / discharge circuit by operating the multi-function valve to shut off the supply / discharge circuit, and maintenance, repair, inspection and maintenance can be performed.
- a hydraulic circuit composed of a hydraulic source, a composite valve, a laminated valve, and a multi-function valve arranged in the hydraulic equipment separates the laminated valve from other equipment by the composite valve. Intrusion of foreign matter (contamination) from other devices can be reliably prevented.
- various operations such as maintenance and trial operation can be performed on the hydraulic cylinder and its supply / discharge circuit. It is possible to simultaneously perform repair, inspection and maintenance work of the laminated valve and repair, inspection and maintenance work of the hydraulic cylinder and its supply / discharge circuit. Furthermore, it has the effect of preventing foreign matter generated from one work from entering another work during these maintenance work.
- the double rear valve used in the hydraulic circuit of the present invention includes a p port connected to the hydraulic pump, a t port connected to the tank circuit, an a port connected to the first supply / discharge circuit, and a b port connected to the second supply / discharge circuit.
- a composite valve body 30a having a p1 port to which the p port is connected, a t1 port to which the t port is connected, an a1 port to which the a port is connected, and a b1 port to which the b port is connected,
- the composite valve body 30a includes a first left-side passage configuration in which the p-port and the p1 port are connected and a first left-side U-shaped passage is provided, and a pump side stop valve is provided in a lower passage of the first left-side U-shaped passage
- a first right U-shaped passage and a first T-shaped passage connecting the t port and the t1 port, and a lower passage of the first right U-shaped passage is substantially the same as an upper passage of the first left U-shaped passage.
- a first right-side passage configuration having a configuration in which both the first T-shaped passage is disposed on substantially the same axis as the lower passage of the first left U-shaped passage and a tank-side bypass stop valve is disposed;
- a second right side passage structure that connects the a port and the a1 port and includes a second right U-shaped passage, and a second multi-function valve side second stop valve is provided in a lower passage of the second right U shape passage;
- a b port and the b port are connected to each other, and a second left U-shaped path and a second T-shaped path are provided, and a lower path of the second left U-shaped path is substantially the same axis as an upper path of the second right U-shaped path.
- a first multi-function valve-side first stop valve is disposed on the line, the second T-shaped passage is disposed on the same axis as the lower passage of the second right U-shaped passage, and a pump-side bypass stop valve is disposed.
- a second cross-section having two left-side passage configurations, wherein the first cross-section or the second cross-section When the side is rotated 180 degrees in the horizontal direction, the first left passage configuration and the second right passage configuration, and the first right passage configuration and the second left passage configuration are substantially the same, and the first left side of the first cross section
- the lower passage of the passage configuration is connected by the pump side bypass circuit via the pump side bypass stop valve to the second T-passage of the second cross section, and the lower passage of the second right passage configuration of the second cross section is connected to the tank side bypass circuit
- the first T-shaped passage of the first cross section is connected via a tank side bypass stop valve.
- the composite valve with the above configuration is configured such that the circuit integrating the functions is formed on two surfaces, and when one of the surfaces is rotated and overlapped in the longitudinal direction, the circuits integrating the functions are substantially the same. , It is possible to standardize and simplify a circuit that aggregates functions. For this reason, the productivity can be improved.
- FIG. 1 is a hydraulic circuit diagram of a first embodiment of the present invention.
- FIG. 3 is a YY sectional view of FIG. 2. ZZ sectional view of FIG. XX sectional drawing of FIG.
- the hydraulic circuit according to the embodiment of the present invention shown in FIG. 1 includes a hydraulic source 10 including a hydraulic pump 11, a tank 12, and a filter 13, a hydraulic device 60 including a hydraulic cylinder 61, and the hydraulic device 60.
- a multi-function valve 40 provided in the vicinity, and a manifold 50 in which the hydraulic pressure source 10 and the multi-function valve 40 are connected and the composite valve 30 and the laminated valve 20 are provided on the upper part thereof are configured.
- the relationship between the multifunction valve 40 and the hydraulic device 60 is that a hydraulic cylinder 61 constituting the multifunction valve 40 and the hydraulic device 60 is directly attached to the cylinder body 62 as shown in Japanese Patent No. 3696850. Since the multi-function valve 40 has a function of performing a flushing operation of the circuit and a function of enabling the hydraulic device 60 to be removed, it is desirable that the multi-function valve 40 be attached to the main body of the hydraulic device as much as possible.
- the laminated valve 20 mounted on the upper part of the manifold 50 via the composite valve 30 includes a direction switching valve body 21 having a direction switching valve 22 and a load check valve body having two load check valve bodies 23a and 23b. 23 and a speed control valve body 24 composed of speed control valves 24a and 24b for adjusting the operating speed of the hydraulic device 60.
- the direction switching valve 22 of the direction switching valve body 21 of the stacked valve 20 includes a neutral position 22a, a right switching position 22b, and a left switching position 22c.
- the composite valve 30 includes a multi-function valve side first passage 31b including a multi-function valve side first stop valve 31a that opens and closes between the multi-function valve 40 and the multi-layer valve 20, a multi-function valve 40, and the multi-layer valve 20.
- Multi-function valve side second passage 32b having a multi-function valve side second stop valve 32a that opens and closes between the pump and a pump side stop valve 33a that opens and closes between the hydraulic pump 11 and the laminated valve 20
- a pump side bypass circuit 36b having a pump side bypass stop valve 36a that opens and closes between 1b and a pump that branches between the tank side stop valve 34a and the multifunction valve side second passage 32a.
- Tank side bypass with side bypass stop valve 35a A configuration in which a road 35b.
- the multifunction valve side first passage 31b is provided between the b port 37b to which the second supply / discharge circuit 38b is connected and the b1 port 37b1 to which the supply / discharge circuit 24d to the speed control valve 24b is connected. It is the structure opened and closed by the 1st side stop valve 31a.
- the multifunction valve side second passage 32b is provided between the a port 37a to which the first supply / discharge circuit 38a is connected and the a1 port 37a1 to which the supply / discharge circuit 24c to the speed control valve 24a is connected. It is the structure opened and closed by the side 2nd stop valve 32a. Therefore, when the multifunction valve side first stop valve 31a and the multifunction valve side second passage 32b are closed, the multifunction valve 40 and the stacked valve 20 are disconnected.
- the pump side passage 33b is provided between the p port 37p to which the pump circuit 10a is connected and the p1 port 37p1 to which the supply / discharge circuit 39a is connected, and is configured to be opened and closed by the pump side stop valve 33a.
- the tank side passage 34b is provided between the t port 37t connected to the tank circuit 12a and the t1 port 37t1 connected to the supply / discharge circuit 39b, and is configured to be opened and closed by the tank side stop valve 34a. Therefore, when the pump side stop valve 33a and the tank side stop valve 34a are closed, the connection between the stacked valve 20 and the hydraulic source 10 is cut off, and the connection between the stacked valve 20 and the hydraulic source 10 is cut off.
- the pump-side bypass circuit 36b is provided between the pump-side passage 33b and the multifunction valve-side first passage 31b, and is configured to be opened and closed by the pump-side bypass stop valve 36a.
- the tank-side bypass circuit 35b It is provided between the passage 34b and the multifunction valve side first passage 31b, and is configured to be opened and closed by a tank side bypass stop valve 35a.
- the composite valve 70 shown in FIG. 6B has the same structure except for the connection of the pump side bypass circuit 36b and the tank side bypass circuit 35b. That is, the pump-side bypass circuit 36b1 includes the tank-side bypass stop valve 36a1 in a configuration in which the pump-side passage 33b and the multifunction valve-side second passage 32b are connected.
- the tank-side bypass circuit 35b1 is configured to connect the tank-side passage 34b and the multifunction valve-side first passage 31b and includes a pump-side bypass stop valve 35a1.
- each stop valve of the composite valve 30 is substantially the same as that of the structure disclosed in FIG. 2A of Japanese Patent Application Laid-Open No. 2011-231924, omitting the multipurpose port. Since the body is a normal poppet-type on-off valve that opens and closes the passage, its detailed description is omitted.
- the composite valve 30 includes a first cross section 30b shown in FIG. 3 showing a YY cross section of FIG. 2, a second cross section 30c shown in FIG. 4 showing a ZZ cross section, and an XX cross section. 5, which is shown in FIG. 5.
- the first cross section 30 b and the second cross section 30 c are arranged in parallel, and the two cross sections intersect the third cross section 30 d. In this configuration, the design can be easily performed by arranging valves in each cross section.
- the first cross section 30b shown in FIG. 3 includes a p port 37p connected to the pump circuit 10a, a p1 port 37p1 connected to the p port 37p via a pump side stop valve 33a and connected to the supply / discharge circuit 39a.
- the t port 37t is connected to the tank circuit 12a and the t1 port 37t1 is connected to the t port 37t via the tank side stop valve 34a and connected to the supply / discharge circuit 39b.
- the second cross section 30c shown in FIG. 4 communicates with the b port 37b connected to the second supply / discharge circuit 38b connected to the port 62b of the hydraulic cylinder 61 and the b port 37b via the multifunction valve side first stop valve 31a.
- the multi-function valve is connected to the b1 port 37b1 connected to the supply / discharge circuit 24d communicating with the speed control valve 24b, the a port 37a connected to the first supply / discharge circuit 38a connected to the port 62a of the hydraulic cylinder 61, and the a port 37a.
- a port 37a to which a supply / exhaust circuit 24c communicating with the communication speed control valve 24a is connected via the side second stop valve 32a.
- a third cross section 30d shown in FIG. 5 is a plane that intersects the first cross section 30b and the second cross section 30c, and is multifunctional with the pump side bypass stop valve 36a, the pump side stop valve 33a, and the tank side bypass stop valve 35a.
- the valve-side second stop valve 32a, the multifunction valve-side first passage 31b, the multifunction valve-side second passage 32b, and the pump-side bypass circuit 36b and the tank-side bypass circuit 35b are arranged.
- the composite valve 30 improves the ease of workability by adopting a configuration in which the third cross section 30d intersects the two planes of the first cross section 30b and the second cross section 30c.
- the first cross section 30b shown in FIG. 3 includes a pump-side passage 33b that connects a p-port 37p that opens to the lower plane 46a and a p1 port 37p1 that opens to the upper plane 46b, and a t-port 37t that opens to the lower plane 46a.
- a tank-side passage 34b that connects a t1 port 37t1 that opens to 46b is provided.
- the first left-side passage configuration 26 constituted by the pump-side passage 33b includes a first left-side U-shaped passage 26k that is configured by a lower passage 26a1 and an upper passage 26a2 and extends toward the left side surface 46d.
- the upper passage 26a2 is opened and closed by a pump side stop valve 33a provided on the axis of the lower passage 26a1, and a pump side bypass circuit 36b is opened on the p port 37p side of the lower passage 26a1.
- the first right side passage structure 27 constituted by the tank side passage 34b is composed of a lower passage 27a1, a middle passage 27a2, and an upper passage 27a3, and extends to the right side 46c by the upper passage 27a3 and the middle passage 27a2.
- the lower passage 27a1 forms a T-shaped passage 27t branched from the tank side passage 34b.
- the lower passage 27a1 is configured to be opened and closed by a tank-side bypass stop valve 35a, is formed coaxially with the lower passage 26a1 of the first left-side passage configuration 26, and a tank-side bypass circuit 35b is provided in the tank-side bypass stop valve 35a. It is the structure which opens.
- the middle passage 27a2 is formed coaxially with the upper passage 26a2 of the first left passage constitution 26 and is provided with a tank side stop valve 34a.
- the tank side stop valve 34a opens and closes with the upper passage 27a3. .
- the second cross section 30c shown in FIG. 4 includes a multifunction valve-side first stop valve 31a that connects a b port 37b that opens to the lower flat surface 46a and a b1 port 37b1 that opens to the upper flat surface 46b, and a that opens to the lower flat surface 46a.
- a multi-function valve side second stop valve 32a for connecting the port 37a and the a1 port 37a1 opened to the upper flat surface 46b is provided.
- the second right side passage configuration 28 constituted by the multi-function valve side second passage 32b includes a second right U-shaped passage 28k constituted by a lower passage 28a1 and an upper passage 28a2 and extending toward the left side surface 46c.
- the lower passage 28a1 and the upper passage 28a2 are opened and closed by a multifunction valve-side second stop valve 32a provided on the axis of the lower passage 28a1, and a tank-side bypass circuit 35b is opened on the a port 37a side of the lower passage 28a1. ing.
- the second left side passage configuration 29 configured by the multifunction valve side first passage 31b is configured by a lower passage 29a1, a middle passage 29a2, and an upper passage 29a3, and extends upward toward the right side 46c by the upper passage 29a3 and the middle passage 29a2.
- the lower passage 29a1 forms a second T-shaped passage 29t branched from the multifunction valve side first passage 31b.
- the lower passage 29a1 is configured to be opened and closed by a pump-side bypass stop valve 36a, is formed coaxially with the lower passage 28a1 of the second right-side passage configuration 28, and a pump-side bypass circuit 36b is provided in the pump-side bypass stop valve 36a. It is the structure which opens. Also.
- the middle passage 29a2 is formed coaxially with the upper passage 28a2 of the second right passage configuration 28, and is provided with a multifunction valve side first stop valve 31a.
- the multifunction valve side first stop valve 31a is provided as the upper passage 29a3. Open and close between.
- the third cross section 30d shown in FIG. 5 is a horizontal cross section that includes the tank side bypass stop valve 35a of the first cross section 30b and the pump side bypass stop valve 36a of the second cross section 30c and intersects the second cross section 30c and the first cross section 30b. Yes, the tank-side bypass circuit 35b and the pump-side bypass circuit 36b connect the second cross section 30c and the first cross section 30b.
- the various stop valves are arranged on the same axis, and the passage connecting the various stop valves is formed in one plane, and further intersects with this plane. It is easy to construct because it is a simple combination of configurations that are connected by two planes. Further, when the first cross section 30b is rotated 180 degrees in the longitudinal direction as indicated by an arrow C in FIG. 3, the first left passage configuration 26, the second right passage configuration 28, the first right passage configuration 27, and the second right passage The configuration 28 is configured to be substantially the same.
- the multi-function valve 40 is closely attached to the ports 62 a and 62 b of the hydraulic cylinder 61 and opens and closes between the first supply / discharge circuit 38 a connected to the manifold 50 and the port 62 a of the hydraulic cylinder 61.
- the first stop valve 40a, the second stop valve 40b that opens and closes between the port 62b of the hydraulic cylinder 61 and the second supply / discharge circuit 38b connected to the manifold 50, and the multi-function valve 40 are connected to the first supply / discharge circuit.
- the bypass circuit 42b is provided with a third stop valve 40c that opens and closes between the valve 38a and the second supply / discharge circuit 38b.
- the bypass circuit 42b connects the first supply / discharge circuit 38a and the second supply / discharge circuit 38b.
- the function of making the hydraulic cylinder 61 operate normally (for reciprocal operation) when the third stop valve 40c is closed and the first stop valve 40a and the second stop valve 40b are opened.
- the hydraulic cylinder 61 can be removed for maintenance, inspection, and repair.
- the multi-function valve 40 opens and closes a first stop valve 40 a that opens and closes between the port 62 a of the hydraulic cylinder 61 and the first supply / discharge circuit 38 a, and opens and closes between the second supply and discharge circuit 38 b and the port 62 b of the hydraulic cylinder 61.
- a bypass circuit 42b that branches from the stacked valve 20 side of the first stop valve 40a and the second stop valve 40b and is opened and closed by the third stop valve 40c. Since it is almost the same as the multi-function valve described in Japanese Patent No. 3696850, a detailed description is omitted.
- the hydraulic cylinder 61 constituting the hydraulic equipment 60 operates in the pull-in direction when the operating pressure oil is supplied to the rod side hydraulic chamber 63a of the main body 62 via the port 62a, and the head side pressure chamber 63b.
- the rod 65 operates in the pushing direction.
- the hydraulic oil in the head side pressure chamber 63b of the hydraulic cylinder 61 is combined from the multi-function valve 40 through the second supply / discharge circuit 38b composite valve 30 through the speed control valve body 24 and the load check valve body 23 through the right switching position 22b. Since the valve 30 returns to the tank 12, the rod 65 of the hydraulic cylinder 61 operates in the retracting direction.
- the tank side bypass stop valve 35a, the pump side bypass stop valve 36a of the composite valve 30 and the third stop valve 40c of the multi-function valve 40 are closed, and the direction switching valve 22 is moved to the left.
- the switch position 22c is operated, the hydraulic oil is supplied to the head-side pressure chamber 63b and the hydraulic oil in the rod-side hydraulic chamber 63a returns to the tank 12, so that the rod 65 of the hydraulic cylinder 61 operates in the pushing direction.
- the multi-layer valve side first stop valve 31a, the multi-function valve side second stop valve 32a, and the tank side stop valve 34a of the composite valve 30 are repaired, inspected and serviced. And the pump side stop valve 33a is closed.
- the composite valve 30 closes between the laminated valve 20 and the hydraulic cylinder 61 and the hydraulic power source 10, so that the laminated valve 20 can be removed from the composite valve 30 for repair, inspection, maintenance and the like.
- the trial operation of the hydraulic cylinder 61 is performed by opening the pump-side bypass stop valve 35a and the tank-side bypass stop valve 36a during the repair, inspection, and maintenance operations of the laminated valve 20, and the second stop valve 40b and the second stop valve 40 of the multifunction valve 40.
- the stop valve 40b is opened, hydraulic oil from the hydraulic source 10 is supplied to and discharged from the hydraulic cylinder 61, so that the rod 65 operates in the extending direction.
- the pump-side bypass stop valve 35a and the tank-side bypass stop valve 36a are opened and the first stop valve 40a and the second stop valve 40b of the multi-function valve 40 are closed at the time of repair, inspection and maintenance operations of the laminated valve 20 described above.
- the bypass circuit 42b is configured, so that the hydraulic fluid returns from the first supply / discharge circuit 38a to the tank 12 via the bypass circuit 42b and from the second supply / discharge circuit 38b to the composite valve 30. Flushing can be performed.
- the discharge side of the hydraulic pump 11 is the head side pressure of the hydraulic cylinder 61.
- the tank 12 is connected to the chamber 63 b and the tank 12 is connected to the rod side hydraulic chamber 63 a of the hydraulic cylinder 61. For this reason, the trial operation of the hydraulic cylinder 61 is only in the direction of extending the rod 65 of the hydraulic cylinder 61.
- the discharge side of the hydraulic pump 11 is connected to the hydraulic cylinder 61.
- the tank 12 is connected to the head side pressure chamber 63 a and the tank 12 is connected to the rod side hydraulic chamber 63 b of the hydraulic cylinder 61. For this reason, the trial operation of the hydraulic cylinder 61 is only in the direction in which the rod 65 of the hydraulic cylinder 61 is reduced.
- FIG. 8 showing a circuit diagram of the second embodiment
- a direction switching valve 45 By operating this direction switching valve 45, it is possible to perform a trial run in the expansion / contraction direction.
- the direction switching valve 45 has a structure having three positions, that is, a neutral position 45a, a first switching position 45b, and a second switching position 45c.
- the direction switching valve 45 is constituted by only one of the neutral position and the first or second switching position. It may be a two-position direction switching valve.
- the tank side bypass circuit 35b and the pump side bypass circuit 36b are communicated with each other, so that the head side pressure chamber 63b and the hydraulic pump 11 are connected, and the tank 12 and the head side pressure chamber 63b are connected.
- the rod 65 can be operated in the extending direction.
- the tank side bypass circuit 35b connects the tank side passage 34b and the multifunction valve side first passage 31b
- the pump side bypass circuit 36b connects the pump side passage 33b and the multifunction valve side first. Since the two passages 32b communicate with each other, the rod-side hydraulic chamber 63a and the hydraulic pump 11 are connected, and the tank 12 and the rod-side hydraulic chamber 63a are connected, so that the rod 65 can be operated in a contracting direction.
- the third stop valve 40c of the multi-function valve 40 is opened and the other first stop valve 40a and the second stop valve 40b are closed, the supply and discharge of the hydraulic oil to the hydraulic cylinder 61 is also stopped, but the first supply and discharge is stopped. Since the circuit 38a and the second supply / discharge circuit 38b are connected by the bypass circuit 42b of the multi-function valve 40, the first supply / discharge circuit 38a and the second supply / discharge circuit 38b can be flushed.
- the hydraulic cylinder 61 of the hydraulic device 60 can completely separate the hydraulic device 60 from the stacked valve 20 and the hydraulic power source 10 by opening only the third stop valve 40c of the multi-function valve 40. Can be serviced.
- Repair, inspection, and maintenance of the laminated valve 20 and the hydraulic cylinder 61 are performed in a state where the laminated valve 20 and the hydraulic cylinder 61 are securely separated by the composite valve 30 and the multi-function valve 40, so there is no risk of contamination. . Further, it is not necessary to stop the hydraulic power source 10 during repair, inspection, and maintenance, and a flushing circuit can be configured, so that flushing operations can be performed in parallel during repair, inspection, and maintenance. Furthermore, after the repair, inspection, and maintenance of the hydraulic cylinder 61 are completed and attached to the multifunction valve 40 again, the hydraulic cylinder 61 can be trial run and finely operated.
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Abstract
Description
以下、本発明の好適な実施の形態の第1実施形態を図1~図7に基づいて説明する。
複合弁30についてその回路図を図6(a)を参照して説明する。複合弁30は、多機能弁40と積層弁20との間を開閉する多機能弁側第1止弁31aを備えた多機能弁側第1通路31bと、多機能弁40と積層弁20との間を開閉する多機能弁側第2止弁32aを備えた多機能弁側第2通路32bと、油圧ポンプ11と積層弁20との間を開閉するポンプ側止弁33aを備えたポンプ側通路33bと、タンク12と積層弁20との間を開閉するタンク側止弁34aを備えたタンク側通路34bと、ポンプ側止弁33aの油圧ポンプ11側で分岐し多機能弁側第1通路1bとの間を開閉するポンプ側バイパス止弁36aを備えたポンプ側バイパス回路36bと、タンク側止弁34aのタンク側12で分岐し多機能弁側第2通路32aとの間を開閉するポンプ側バイパス止弁35aを備えたタンク側バイパス回路35bとを備えた構成である。
複合弁30の具体的構成について、図2~図5に基づいて説明する。なお、複合弁30の各止弁の具体的構造は、特開2011-231924号の図2(a)に開示された構造の多目的ポートを省いた構造とほぼ同一であり、ハンドルの操作により弁体が通路を開閉する通常のポペット型の開閉弁であるから、その詳細説明を省く。
多機能弁40は、油圧シリンダ61のポート62aとポート62bに密接して取り付けてあり、マニュホールド50に接続する第1給排回路38aと油圧シリンダ61のポート62aの間を開閉する第1止弁40aと、マニュホールド50に接続する第2給排回路38bと油圧シリンダ61のポート62bの間を開閉する第2止弁40bと、この多機能弁40は、第1給排回路38aと第2給排回路38bの間を開閉する第3止弁40cを設けたバイパス回路42bを有する構成である。
油圧機器60を構成する油圧シリンダ61は、本体62のロッド側油圧室63aにポート62aを介して作動圧油が供給されるとそのロッド65が引き込み方向に作動し、ヘッド側圧力室63bに作動圧力油が供給されるとロッド65が押し出し方向に作動する構成である。
図7(a)(b)に基づいて第1実施形態の作用についてのべる。なお、図7(a)(b)は、本発明の作動と関連が薄いので図1のロードチェック弁体23と速度制御弁体24を省いてある。
図7(a)において、方向切換弁体21の方向切換弁22を操作して油圧シリンダ61を通常動作させる場合は、まず、複合弁30のタンク側バイパス回路35bのタンク側バイパス止弁35aとポンプ側バイパス回路36bのポンプ側バイパス止弁36aを閉じその外の止弁を開いた状態にし、多機能弁40の第3止弁40cを閉じその他の止弁を開いておく状態にする。
第2実施形態の回路図を示す図8に示すように、複合弁30のタンク側バイパス止弁35aとポンプ側バイパス止弁36aを、方向切換弁45に置き換えると、油圧シリンダ61は、この方向切換弁45の操作により、伸張、縮小方向への試運転を行なうことができる。なお、方向切換弁45は、中立位置45aと第1切換位置45bと第2切換位置45cの3位置を備えた構造にしたが、中立位置と前記第1または第2切換位置の一方のみで構成する2位置の方向切換弁でもよい。
11 油圧ポンプ
12 タンク
20 積層弁
21 方向切換弁体
22 方向切換弁体
23 ロードチェック弁体
24 速度制御弁体
26 第1左側通路構成
26k 第1左第1左コの字通路
27 第1右側通路構成
27t 第1T字通路
28 第2右側通路構成
28k 第2右コの字通路
29 第2左側通路構成
29k 第2左コの字通路
29t 第2T字通路
30 複合弁
31a 多機能弁側第1止弁
31b 多機能弁側第1通路
32a 多機能弁側第2止弁
33a ポンプ側止弁
33b ポンプ側通路
34a タンク側止弁
34b タンク側通路
35a タンク側バイパス止弁
35 タンク側バイパス回路
36a ポンプ側バイパス止弁
36b ポンプ側バイパス回路
40 多機能弁
45 方向切換弁
60 油圧機器
61 油圧シリンダ
Claims (4)
- 作動油を貯留するタンクとこのタンクに接続し作動圧油を発生する油圧ポンプで構成する油圧源と、
この油圧源に接続し油圧源からの作動圧油を油圧機器に給排制御する方向切換弁を備えた積層弁と
前記油圧機器に近接させて設けてあり油圧機器への第1給排回路と第2給排回路を開閉する第1止弁と第2止弁とこの第1止弁と第2止弁の積層弁側に配置され第3止弁を有したバイパス回路を備えた多機能弁と、
前記油圧源と前記積層弁と前記多機能弁が接続する複合弁と、
より構成され、
前記複合弁が前記多機能弁と前記積層弁との間を開閉する多機能弁側第1止弁を備えた多機能弁側第1通路と、
前記多機能弁と前記積層弁との間を開閉する多機能弁側第2止弁を備えた多機能弁側第2通路と、
油圧ポンプと前記積層弁との間を開閉するポンプ側止弁を備えた前記ポンプ側通路と、
前記タンクと前記積層弁との間を開閉するタンク側止弁を備えた前記タンク側通路と、
前記ポンプ側止弁のポンプ側で分岐し前記多機能弁側第1通路の間を開閉するポンプ側バイパス止弁を備えたポンプ側バイパス回路と、
前記タンク側止弁のタンク側で分岐し前記多機能弁側第2通路の間を開閉するタンク側止弁を備えたタンク側バイパス回路と
を備えたことを特徴とする油圧回路。 - 作動油を貯留するタンクとこのタンクに接続し作動圧油を発生する油圧ポンプで構成する油圧源と、
この油圧源に接続し油圧源からの作動圧油を油圧機器に給排制御する方向切換弁を備えた積層弁と
前記油圧機器に近接させて設けてあり油圧機器への第1給排回路と第2給排回路を開閉する第1止弁と第2止弁とこの第1止弁と第2止弁の積層弁側に配置され第3止弁を有したパイパス回路を備えた多機能弁と、
前記油圧源と前記積層弁と前記多機能弁が接続する複合弁と、
より構成され、
前記複合弁が前記多機能弁と前記積層弁との間を開閉する多機能弁側第1止弁を備えた多機能弁側第1通路と、
前記多機能弁と前記積層弁との間を開閉する多機能弁側第2止弁を備えた多機能弁側第2通路と、
油圧ポンプと前記積層弁との間を開閉するポンプ側止弁を備えた前記ポンプ側通路と、
前記タンクと前記積層弁との間を開閉するタンク側止弁を備えた前記タンク側通路と、
前記ポンプ側止弁のポンプ側で分岐し前記多機能弁側第2通路の間を開閉するポンプ側バイパス止弁を備えたポンプ側バイパス回路と、
前記タンク側止弁のタンク側で分岐し前記多機能弁側第1通路の間を開閉するタンク側止弁を備えたタンク側バイパス回路と、
を備えたことを特徴とする油圧回路。 - 作動油を貯留するタンクとこのタンクに接続し作動圧油を発生する油圧ポンプで構成する油圧源と、
この油圧源に接続し油圧源からの作動圧油を油圧機器に給排制御する方向切換弁を備えた積層弁と
前記油圧機器に近接させて設けてあり油圧機器への第1給排回路と第2給排回路を開閉する第1止弁と第2止弁とこの第1止弁と第2止弁の積層弁側に配置され第3止弁を有したパイパス回路を備えた多機能弁と、
前記油圧源と前記積層弁と前記多機能弁が接続する複合弁と、
より構成され、
前記複合弁が前記多機能弁と前記積層弁との間を開閉する多機能弁側第1止弁を備えた多機能弁側第1通路と、
前記多機能弁と前記積層弁との間を開閉する多機能弁側第2止弁を備えた多機能弁側第2通路と、
油圧ポンプと前記積層弁との間を開閉するポンプ側止弁を備えた前記ポンプ側通路と、
前記タンクと前記積層弁との間を開閉するタンク側止弁を備えた前記タンク側通路と、
前記ポンプ側通路と前記タンク側通路の双方と、多機能弁側第1通路と多機能弁側第2通路の双方の接続を切替える方向切換弁を備えたことを特徴とする油圧回路。 - 油圧ポンプが接続するpポートとタンク回路が接続するtポート及び第1給排回路に接続するaポートと第2給排回路に接続するbポートと、
前記pポートが接続するp1ポートと前記tポートが接続するt1ポート及び前記aポートが接続するa1ポートと前記bポートが接続するb1ポートと、
を備えた複合弁体30aを有し、
この複合弁体30aが、
前記pポートと前記p1ポートを接続し第1左コの字形通路を備えこの第1左コの字通路の下方通路にポンプ側止弁を設けた第1左側通路構成と、
前記tポートと前記t1ポートを接続し第1右コの字通路と第1T字通路を備え前記第1右コの字通路の下方通路を前記第1左コの字形通路の上方通路とほぼ同一軸線上に配置しタンク側止弁を設けると共に前記第1T字通路を前記第1左コの字形通路の下方通路とほぼ同一軸線上に配置しタンク側バイパス止弁を配置した構成の第1右側通路構成と、
を有する第1断面と、
前記aポートと前記a1ポートを接続し第2右コの字形通路を備えこの第2右コの字通路の下方通路に多機能弁側第2止弁を設けた第2右側通路構成と、
前記bポートと前記bポートを接続し第2左コの字通路と第2T字通路を備え前記第2左コの字通路の下方通路を前記第2右コの字形通路の上方通路とほぼ同一軸線上に配置し多機能弁側第1止弁を設けると共に前記第2T字通路を前記第2右コの字形通路の下方通路と同一軸線上に配置しポンプ側バイパス止弁を配置した構成の第2左側通路構成と、
を有する第2断面と、
を備え
前記第1断面または第2断面の一方を水平方向に180度回転すると第1左側通路構成と第2右側通路構成及び第1右側通路構成と第2左側通路構成がほぼ同一になるように構成し、前記第1断面の第1左側通路構成の下方通路をポンプ側バイパス回路によりポンプ側バイパス止弁を介して前記第2断面の第2T字通路に接続すると共に、前記第2断面の第2右側通路構成の下方通路をタンク側バイパス回路によりタンク側バイパス止弁を介して前記第1断面の第1T字通路接続したこと特徴とする複合弁。
Priority Applications (4)
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US14/236,089 US9416798B2 (en) | 2012-04-05 | 2013-03-29 | Hydraulic circuit, and combination valve used in same hydraulic circuit |
CN201380002490.2A CN103717915A (zh) | 2012-04-05 | 2013-03-29 | 液压回路以及该液压回路中所使用的复合阀 |
KR1020147001438A KR20140143735A (ko) | 2012-04-05 | 2013-03-29 | 유압 회로 및 그 유압 회로에 이용되는 복합 밸브 |
EP13772490.2A EP2749777B1 (en) | 2012-04-05 | 2013-03-29 | Hydraulic circuit, and combination valve used in same hydraulic circuit |
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JP2013064386A JP6077901B2 (ja) | 2012-04-05 | 2013-03-26 | 油圧回路及びその油圧回路に用いる複合弁 |
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EP (1) | EP2749777B1 (ja) |
JP (1) | JP6077901B2 (ja) |
KR (1) | KR20140143735A (ja) |
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CN111810477A (zh) * | 2020-05-22 | 2020-10-23 | 武汉船用机械有限责任公司 | 用于插销升降装置的液压系统 |
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DE102014209387B3 (de) * | 2014-05-16 | 2015-09-24 | Rausch & Pausch Gmbh | Hydrauliksystem |
JP2016109210A (ja) * | 2014-12-05 | 2016-06-20 | 株式会社ユーテック | 継手装置 |
FR3044054B1 (fr) * | 2015-11-20 | 2018-08-10 | Db Industries | Dispositif de rincage automatique des verins hydrauliques a double effet |
DE102016000644A1 (de) * | 2016-01-22 | 2017-07-27 | Hydac System Gmbh | Schaltungsanordnung |
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US9416798B2 (en) | 2016-08-16 |
JP6077901B2 (ja) | 2017-02-08 |
JP2013231505A (ja) | 2013-11-14 |
CN103717915A (zh) | 2014-04-09 |
US20140190158A1 (en) | 2014-07-10 |
EP2749777A4 (en) | 2015-07-01 |
EP2749777B1 (en) | 2016-09-14 |
KR20140143735A (ko) | 2014-12-17 |
EP2749777A1 (en) | 2014-07-02 |
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