WO2006011627A1 - 流体シーケンス設備における誤作動防止装置 - Google Patents
流体シーケンス設備における誤作動防止装置 Download PDFInfo
- Publication number
- WO2006011627A1 WO2006011627A1 PCT/JP2005/014132 JP2005014132W WO2006011627A1 WO 2006011627 A1 WO2006011627 A1 WO 2006011627A1 JP 2005014132 W JP2005014132 W JP 2005014132W WO 2006011627 A1 WO2006011627 A1 WO 2006011627A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- working fluid
- actuator
- valve
- control mechanism
- fluid
- Prior art date
Links
Classifications
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/005—Leakage; Spillage; Hose burst
Definitions
- the present invention relates to a malfunction prevention device in a fluid sequence facility, and in particular, an actuator operated by a working fluid, an actuator control mechanism for controlling the operation of the actuator by the working fluid, and an operation to the actuator control mechanism.
- the present invention relates to an operation preparation control mechanism for controlling stoppage of fluid, and a malfunction prevention device provided in a fluid sequence facility equipped with. Background art
- an actuator that is operated in accordance with a preset order by a working fluid such as compressed air or hydraulic pressure is generally used, such as a tool changer.
- a working fluid such as compressed air or hydraulic pressure
- a malfunction prevention device that prohibits the operation of the actuator is provided so that the third party is not accidentally activated by a third party (for example, Patent Document 1).
- Such a malfunction prevention device in the conventional fluid sequence equipment is a pump compressor or the like for supplying a working fluid to the actuator by using a switch that is electrically turned on and off by inserting and removing a safety plug.
- An electric signal path for connecting to the electric drive source is provided separately from the working fluid supply path, and the power supply to these electric drive sources is stopped and only necessary parts are driven.
- Patent Document 1 Japanese Patent Laid-Open No. 6-1 2 6 5 6 2 Disclosure of Invention
- the electric fluid path that electrically connects the switch and the electric drive source is the working fluid supply route.
- the present invention has been made in view of the above-described problems, and provides a malfunction prevention device capable of reliably preventing the operation of an actuator of a fluid sequence facility by removing a safety plug with a simple configuration. With the goal.
- the invention relating to the malfunction prevention device in the fluid sequence equipment includes an actuator operated by the working fluid, and an actuator control mechanism for controlling the operation of the actuator by the working fluid.
- An operation preparation control mechanism for controlling supply / stop of working fluid to the actuator control mechanism, and a fluid plug system equipped with a safety plug, an insertion portion into which the safety plug is inserted, a safety plug A switching valve that applies a pilot pressure by the working fluid to the operation preparation control mechanism when the plug is removed from the insertion portion and prohibits the operation preparation control mechanism from supplying the working fluid to the actuator control mechanism.
- the fluid sequence facility controls the working fluid to be supplied to the actuator from the working fluid supply source via the operation preparation control mechanism and the actuator control mechanism, and to cause the actuator to perform a predetermined operation.
- the safety plug is inserted into the insertion part of the malfunction prevention device. If the operator needs to approach the actuator by stopping the fluid sequence facility, such as when checking the fluid sequence facility, a third party accidentally operates the fluid sequence facility and activates the actuator. The operator should approach the actuator with the safety plug removed from the insert and carried.
- the switching valve applies a pilot pressure by the working fluid to the operation preparation control mechanism so as to prohibit the operation preparation control mechanism from supplying the working fluid to the actuator control mechanism. Therefore, it is possible to reliably prevent the actuator from being erroneously operated and to ensure the safety of the worker.
- the malfunction prevention device includes the safety plug, the insertion portion into which the safety plug is inserted, and the operation preparation control mechanism when the safety brag is removed from the insertion portion.
- a safety plug is pulled out with a simple structure provided with a switching valve that applies a pie-mouth pressure by and prohibits the operation preparation control mechanism from supplying the working fluid to the actuator control mechanism.
- FIG. 1 is a conceptual diagram of an embodiment of a fluid sequence facility provided with a malfunction prevention device of the present invention, showing a state in which the operation of an actuator is prohibited by removing a safety bracket.
- FIG. 2 is a conceptual diagram shown for explaining an embodiment of the malfunction prevention device of the present invention.
- FIG. 3 is a conceptual diagram of an embodiment of a fluid sequence facility provided with the malfunction prevention device of the present invention, showing a state where the actuator is driven forward.
- FIG. 4 is a conceptual diagram of an embodiment of a fluid sequence facility provided with the malfunction prevention device of the present invention, showing a state in which the actuator is driven backward.
- FIG. 5 is a conceptual diagram of an embodiment of a fluid sequence facility provided with the malfunction prevention device of the present invention, showing a state in which the actuator is brought to an emergency stop.
- the fluid sequence equipment to which the present invention is applied generally includes a working fluid supply source 1 that supplies a working fluid, an actuator 2 that is actuated by the working fluid, and an operation of the actuator 2 Actuator that controls the pressure by the pressure of the working fluid A control mechanism 3; an operation preparation control mechanism 4 that controls supply / stop of working fluid to the actuator control mechanism 3; and a malfunction prevention device 5 that prohibits the operation of the actuator 2 when necessary.
- the malfunction prevention device 5 of the present invention includes a safety bracket 50 that can be carried by an operator, an insertion portion 5 1 into which the safety plug 50 is inserted, and a safety bracket 50 from the insertion portion 51.
- An on-off valve that applies a pie-up pressure by the working fluid to the operation preparation control mechanism 4 so as to prohibit the operation preparation control mechanism 4 from supplying the working fluid to the actuator control mechanism 3 when it is removed. 5 2 and.
- the fluid sequence equipment in this embodiment employs air pressure as the working fluid. Therefore, the working fluid supply source 1 is a pressure source such as an air compressor.
- the present invention is not limited to this embodiment, and can also be applied to a case where a gas other than air or hydraulic pressure is used as the working fluid.
- the actuator 2 in this embodiment employs a single-ended double acting cylinder.
- the present invention is not limited to this embodiment, and is also applicable to other reciprocating actuators such as hydraulic cylinders, or rotary or swinging actuators such as pneumatic motors and hydraulic motors. can do.
- a safety fence is provided around the actuator 2 and an open / close door can be provided at the entrance of the safety fence.
- the actuator control mechanism 3 in this embodiment includes a master valve 30 connected to the actuator 2, an operation direction for applying a pie-up pressure to control the operation of the master valve 30, and a control relay valve 3. 1 and the forward operation button 3 2 and the backward operation button 3 3 to apply the pie-up pressure to the operation direction control relay valve 3 1 to control the operation so that the actuator 2 is operated in a predetermined direction.
- the master valve 30 is a 5-port 3-position direction switching valve. The master valve 30 is held at the center in a state where no pilot pressure is applied, and any one of the cylinder chambers 2 a and 2 b of the actuator 2 is not supplied to the cylinder chamber 2 a or 2 b.
- the control valve 31 uses a 5-port 2-position direction switching valve.
- the operating direction control relay valve 3 1 receives the pipe pressure by operating the forward operation button 3 2 or the reverse operation button 3 3 and is connected to a predetermined side of the master valve 30. It is configured to apply pressure.
- valve 3 4 and open / close valve 3 5 are connected to operate each.
- the on / off valves 3 4 and 3 5 are 3 port 2 position switching valves.
- the on / off valves 3 4, 3 Only one of 5 is in a communication state, and in conjunction with this, the other is in a cutoff state, and a pilot pressure is applied to one side of the operation direction control relay valve 3 1.
- the operation preparation control mechanism 4 includes an operation preparation relay valve 4 1 that controls supply / stop of the working fluid from the working fluid supply source 1 to the master valve 30 and the like, and a working fluid supply source 1 Stop the supply of working fluid from the working fluid supply source 1 to the master valve 30, etc., and the operation ready button 4 2 that controls the operation ready relay valve 41 to supply the working fluid to the master valve 30, etc. And an emergency stop button 4 3 for controlling the operation preparation relay valve 4 1 so as to prohibit the operation of the actuator 2 (see FIG. 2). Operation ready button 4 2 and emergency stop button 4 3 are connected to operate on-off valves 4 4 and 4 5 respectively. On-off valve
- the malfunction prevention device 5 includes a safety plug 50, a insertion portion 5 1 into which the safety plug 50 is inserted and held, and a safety plug 50 inserted into the insertion portion 51.
- the operation preparation relay valve 4 1 is not applied to any side of the operation preparation relay valve 4 and the safety plug 50 is pulled out from the insertion part 51.
- an open / close valve 5 2 for applying a pie-mouth pressure to the operation preparation relay valve 4 1 so that the hydraulic fluid is not supplied to the master valve 30 or the like.
- the on-off valve 5 2 in this embodiment is 3 A port 2 position switching valve is used. In the embodiment shown in FIG.
- the opening / closing valve 52 is switched by a lever 53 that is swung by inserting / removing the safety plug 50 into / from the insertion portion 51.
- the insertion portion 51 is shown only in FIG. 2 (a) in order to explain the swinging state of the lever 53.
- the malfunction prevention device 5 configured as described above can have the insertion portion 51 near the entrance / exit of the safety fence around the actuator 2.
- the working fluid supply source 1 and the operation preparation relay valve 4 1 are connected by a working fluid pipe line 60, and the operation preparation relay valve 4 1 and the master valve 30 are connected by a working fluid pipe line 61.
- the master valve 30 and the anti-piston rod side cylinder chamber 2a and the piston port side cylinder chamber 2b of the actuator 2 are connected by working fluid lines 6 2 and 6 3 respectively.
- the working fluid conduit 6 0 between the working fluid supply source 1 and the operation preparation relay valve 4 1 includes an on-off valve 4 4, 4 operated by the operation preparation button 4 2 and the emergency stop button 4 3.
- the working fluid conduit 6 1 between the operation ready relay valve 4 1 and the master valve 30 is connected to the operating direction control relay valve 3 1, forward operation button 3 2 and reverse operation button 3 3 respectively.
- the on-off valves 3 4 and 3 5 are connected in parallel by the pilot pressure line 7 2, and the on-off valves 3 4 and 3 5 are connected to the respective sides of the operation direction control relay valve 3 1.
- the operation direction control relay valve 3 1 is connected to both sides of the master valve 30 via pipe pressure lines 7 6 and 7 7, respectively. ing.
- FIG. 2 (a) When the fluid sequence equipment is in a normal state, that is, when the actuator 2 is operated, as shown in FIG. 2 (a), FIG. 3, and FIG. Is inserted into the insertion section 51, and the operation preparation button 4 2 is pushed down, and the pilot pressure is applied to the operation preparation relay valve 4 1 via the on-off valve 4 4 to supply the working fluid.
- the operation ready relay valve 41 can supply the working fluid supplied from the source 1 to the master valve 30 and the like.
- Tonrod 2 1 extends (advances).
- the safety plug 50 is inserted into the insertion part 51 and the operation preparation button 4 2 is pushed down.
- the reverse operation button 3 3 to switch the open / close valve 3 5 to the communication state.
- the on-off valve 3 4 is in a shut-off state.
- the pilot port pressure is applied to the operation direction control relay valve 31 via the pilot pressure line 7 2, the on-off valve 3 5, and the pilot pressure line 75, and the pilot port
- the pilot fluid is applied to the master valve 30 via the pilot pressure line 7 2, the operating direction control relay valve 3 1, and the pilot pressure line 7 7. From supply 1 to working fluid line 6 0, operation ready control relay valve 4 1, working fluid line 6 1, master valve 3 0, working fluid line 6 3 to piston rod side cylinder chamber 2 b When supplied, the piston rod 2 1 retracts (retreats).
- the emergency stop button 43 is pushed down to bring the on-off valve 45 into a communication state.
- the on-off valve 4 4 connected to the operation preparation button 4 2 is cut off in conjunction with the pressing of the emergency stop button 4 3.
- the working fluid supplied from the working fluid supply source 1 causes the pi port pressure via the on-off valve 4 5, the shuttle valve 8, and the pi port pressure line ⁇ 1. Is applied to the operation preparation relay valve 4 1, and the operation preparation relay valve 4 1 is cut off. Therefore, the working fluid is not supplied to the working fluid pipe 60, the master valve 30 is held at the center position, and the operation of the actuator 2 is stopped.
- the working fluid supplied from the working fluid supply source 1 causes the pilot port pressure to be changed to the operation ready relay via the working fluid line 60, the open / close valve 44, and the pipe port pressure line 70.
- the operation ready relay valve 4 1 is supplied to the valve 4 1 so that the working fluid can be supplied to the master valve 30 and the like.
- an electrical signal path switch or the like is not provided separately from the working fluid supply path as in the prior art, and the working fluid itself supplied by the fluid sequence facility is used, so that the third-party actuator can be used. Since malfunctions can be reliably prevented, equipment costs can be reduced.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Preventing Unauthorised Actuation Of Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-218631 | 2004-07-27 | ||
JP2004218631A JP4243857B2 (ja) | 2004-07-27 | 2004-07-27 | 流体シーケンス設備における誤作動防止装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006011627A1 true WO2006011627A1 (ja) | 2006-02-02 |
Family
ID=35786365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/014132 WO2006011627A1 (ja) | 2004-07-27 | 2005-07-27 | 流体シーケンス設備における誤作動防止装置 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP4243857B2 (ja) |
CN (1) | CN100378348C (ja) |
WO (1) | WO2006011627A1 (ja) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51117331A (en) * | 1975-03-27 | 1976-10-15 | Numatics Inc | Sluice valve |
JPS57103909A (en) * | 1980-12-22 | 1982-06-28 | Honda Motor Co Ltd | Safe operation circuit in work machine using air pressure |
JPS599303A (ja) * | 1982-07-07 | 1984-01-18 | Nissan Motor Co Ltd | 流体圧回路 |
JPH03176396A (ja) * | 1989-12-05 | 1991-07-31 | Niigata Eng Co Ltd | ゲート開閉装置 |
JPH04102703A (ja) * | 1990-08-22 | 1992-04-03 | Daikin Ind Ltd | 流体制御装置 |
US5819783A (en) * | 1996-11-27 | 1998-10-13 | Isi Norgren Inc. | Modular 3-way valve with manual override, lockout, and internal sensors |
JP2000230504A (ja) * | 1999-02-12 | 2000-08-22 | Fukushiro Miura | アクチュエータの往復駆動回路 |
JP2003184810A (ja) * | 2001-12-19 | 2003-07-03 | Shin Caterpillar Mitsubishi Ltd | 作業機械における油圧回路 |
-
2004
- 2004-07-27 JP JP2004218631A patent/JP4243857B2/ja not_active Expired - Fee Related
-
2005
- 2005-07-27 CN CNB2005800005926A patent/CN100378348C/zh not_active Expired - Fee Related
- 2005-07-27 WO PCT/JP2005/014132 patent/WO2006011627A1/ja active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51117331A (en) * | 1975-03-27 | 1976-10-15 | Numatics Inc | Sluice valve |
JPS57103909A (en) * | 1980-12-22 | 1982-06-28 | Honda Motor Co Ltd | Safe operation circuit in work machine using air pressure |
JPS599303A (ja) * | 1982-07-07 | 1984-01-18 | Nissan Motor Co Ltd | 流体圧回路 |
JPH03176396A (ja) * | 1989-12-05 | 1991-07-31 | Niigata Eng Co Ltd | ゲート開閉装置 |
JPH04102703A (ja) * | 1990-08-22 | 1992-04-03 | Daikin Ind Ltd | 流体制御装置 |
US5819783A (en) * | 1996-11-27 | 1998-10-13 | Isi Norgren Inc. | Modular 3-way valve with manual override, lockout, and internal sensors |
JP2000230504A (ja) * | 1999-02-12 | 2000-08-22 | Fukushiro Miura | アクチュエータの往復駆動回路 |
JP2003184810A (ja) * | 2001-12-19 | 2003-07-03 | Shin Caterpillar Mitsubishi Ltd | 作業機械における油圧回路 |
Also Published As
Publication number | Publication date |
---|---|
JP2006038095A (ja) | 2006-02-09 |
CN100378348C (zh) | 2008-04-02 |
CN1820148A (zh) | 2006-08-16 |
JP4243857B2 (ja) | 2009-03-25 |
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