WO2002023049A1 - Circuit de commande de sequence - Google Patents

Circuit de commande de sequence Download PDF

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Publication number
WO2002023049A1
WO2002023049A1 PCT/JP2001/001623 JP0101623W WO0223049A1 WO 2002023049 A1 WO2002023049 A1 WO 2002023049A1 JP 0101623 W JP0101623 W JP 0101623W WO 0223049 A1 WO0223049 A1 WO 0223049A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder
fluid
fluid pressure
pressure cylinder
output port
Prior art date
Application number
PCT/JP2001/001623
Other languages
English (en)
Japanese (ja)
Inventor
Toshikazu Inoue
Katsuharu Gonmori
Original Assignee
Shin Caterpillar Mitsubishi Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shin Caterpillar Mitsubishi Ltd. filed Critical Shin Caterpillar Mitsubishi Ltd.
Publication of WO2002023049A1 publication Critical patent/WO2002023049A1/fr

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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/20—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for
    • E01C2301/14—Extendable screeds
    • E01C2301/16—Laterally slidable screeds

Definitions

  • the present invention relates to a sequence control circuit for controlling a plurality of fluid pressure cylinders by fluid pressure.
  • this fast drive finisher includes a main thread 2 connected to the rear of the pavement machine body 1 and a main thread 2 as shown in FIG.
  • a left and right two-stage expansion and contraction screw device 3 movably attached to the rear of the main screw of the pavement machine.
  • the pavement material received by the horn 4 is conveyed to the rear part by the bar conveyor 5 and dropped onto the pavement to be screwed down. After spreading in the lateral direction in step 6, while paving forward, pave the paving material to the specified width t using the main screw 2 and the two-stage stretching screw device 3. .
  • the left and right two-stage expansion and contraction device 3 is located at the first stage behind the main thread 2 and parallel to the main thread 2.
  • the expansion and contraction threads 3a are arranged, and the first-stage expansion and contraction threads 3a are respectively provided by the first hydraulic cylinder 7. It is moved horizontally to the left and right.
  • the second-stage expansion and contraction threads 3b are parallel to these.
  • These second-stage expansion / contraction threads 3b are horizontally moved left and right by the second hydraulic cylinders 8, respectively.
  • the hydraulic cylinders 78 of the first and second stages of the telescopic scrolls 3a and 3b are operated by their respective pistons. O Retract the thread of the stone to fit both extension and contraction screws 3a and 3b within the width of the main screw 2.
  • the first and second stages of expansion and contraction threads 3a and 3b are spread according to the width of the pavement.
  • the first-stage expansion and contraction thread 3a becomes full. If it is desired to further increase the pavement width, the piston rod of the second hydraulic cylinder 8 should be removed from this state.
  • the second-stage expansion and contraction thread 3b is expanded. In this way, a width that is at least twice the main width is obtained.
  • the two-stage expansion / contraction screw device 3 is provided with the hydraulic cylinders 7 and 8 in both the two stages.
  • the hydraulic cylinders 7 and 8 of the second-stage expansion and contraction threads 3a and 3b do not need to operate simultaneously in the second-stage. Therefore, conventionally, two solenoid-operated directional control valves provided in a series for controlling cylinder hydraulic oil in a direction, and these solenoid-operated switching valves are provided. The operation is controlled by two operation switches for operating the switching valves, respectively.
  • each of the plurality of hydraulic cylinders is individually operated by a plurality of operation switches for controlling the expansion and contraction operations of the respective cylinders.
  • a plurality of operation switches for controlling the expansion and contraction operations of the respective cylinders.
  • the present invention has been made in view of such a point, and the expansion and contraction operations of a plurality of fluid pressure cylinders can be easily controlled by a single switching valve.
  • the purpose is to be able to work. Disclosure of the invention
  • the sequence control circuit of the present invention has one and the other output ports for controlling the working fluid supplied from the fluid pressure pump in the direction. And a plurality of sequentially operated hydraulic cylinders connected in parallel between one output port of the switching valve and the other output port of the switching valve. , Motion Due to the fixed stroke operation of the fluid cylinder at the top of the working order, it depends on the no-mouth signal pressure output from the fluid cylinder. And a plurality of nozzle port operation check valves for supplying working fluid to the fluid pressure cylinder having a lower operation order and being operated in communication with each other.
  • the non-rotating check valve operates in communication by the neurot signal pressure, and the fluid pressure cylinder, which is relatively lower in the operating order, operates.
  • the operation of a plurality of fluid pressure cylinders can be easily sequence-controlled by one switching valve.
  • a plurality of fluid pressure cylinders are provided with one fluid pressure cylinder and another fluid pressure cylinder, and a plurality of the non-rotating check valves are switched.
  • One fluid pressure cylinder is connected in parallel with one fluid pressure cylinder to one output port of the valve, and one fluid pressure cylinder is operated by a constant stroke operation.
  • the communication port is operated by the signal output from the fluid pressure cylinder output from one of the fluid pressure cylinders, and one of the output ports is connected to the other fluid pressure cylinder.
  • One pipe port for supplying the working fluid is connected in parallel with the other fluid pressure cylinder to the other output port of the check valve and the switching valve.
  • the switching valve is an electromagnetic switching valve that can be switched by an electric signal input from the operation switch, and is operated by one operation switch. By simply switching one of the electromagnetic switching valves, a plurality of fluid pressure cylinders can be easily controlled and the operation can be facilitated.
  • the first hydraulic cylinder and the other hydraulic cylinder are the first stage of a two-stage telescopic screw device in a fast-finisher.
  • Hydraulic cylinder that expands and contracts the expansion and contraction screw of the second stage and the expansion and contraction screw of the second stage, respectively, and only operates one switching valve.
  • a two-stage telescopic screen in a fast-finish closure.
  • the expansion and contraction threads of the device can be expanded in the order of the first stage and the second stage, and can be stored in the order of the second stage and the first stage.
  • FIG. 1 is a circuit diagram showing an embodiment of a sequence control circuit according to the present invention.
  • FIG. 2 is a circuit diagram showing a sequence control circuit according to the present invention.
  • FIG. 3 is a circuit diagram showing another embodiment of the control circuit, and
  • FIG. 3 is a plan view showing an asphalt finisher.
  • the hydraulic pump is an hydraulic pump
  • the hydraulic cylinder is a hydraulic cylinder. It is a hydraulic cylinder.
  • FIG. 1 shows an example of a sequence control circuit.
  • the suction port of the fluid pressure pump 12 is connected to the tank 11, and the fluid pressure pump 1 is connected to the tank 11.
  • a discharge passage 13 connected to the discharge port 2 is provided with a relief valve 14 for maintaining a pump discharge pressure at a set pressure.
  • the discharge passage 13 is supplied from the fluid pressure pump 12
  • the switching valve 15 for controlling the working fluid in the direction is provided.
  • the switching valve 15 is connected to the supply port 16 and the tank 11 to which the discharge passage 13 is connected.
  • a three-position, four-port switching valve having a discharge port 18, one output port 19, and the other output port 20 connected via a connection passage 17. .
  • the switching valve 15 is an electromagnetic switch that can be bidirectionally operated by an electric signal input from the operation switch 21 to the solenoids 22 and 23.
  • the electromagnetic switching valve 15 is switched to one of the switching positions a, and the operation switch is also operated.
  • the switch 21 is switched to the B side, the electromagnetic switching valve 15 can be switched to the other switching position b.
  • a passage 24, 25, 26, 27, 28, 29, 30, 31 is provided between one output port 19 of the switching valve 15 and the other output port 20, in order.
  • a plurality of hydraulic cylinders 32 and 33 to be operated next are connected in parallel.
  • the fluid pressure cylinder 32 is connected to the fluid pressure cylinder in the upper operation order, and the fluid pressure cylinder 33 is connected to the fluid pressure cylinder in the lower operation order.
  • the fluid pressure cylinder 33 is the fluid pressure cylinder having the higher operation order, and the fluid pressure cylinder 32 is the fluid pressure cylinder having the lower operation order.
  • One of the output ports 19 of the switching valve 15 is connected to one of the nozzle opening check valves 34 together with one of the fluid pressure cylinders 32 in parallel. Yes.
  • This one pilot operation check The valve 34 is moved from the one hydraulic cylinder 32 to the nozzle passage 35 by the constant stroke operation of the one hydraulic cylinder 32.
  • the working fluid is operated by the output signal signal of the nozzle, and the working fluid is supplied from one output port 19 to the other fluid pressure cylinder 33. It is something.
  • the other output port 20 on the other side of the switching valve 15 is connected in parallel with the other hydraulic operation check valve 36 together with the other fluid pressure cylinder 33. It is connected .
  • the other non-rotating operation check valve 36 is connected to the other hydraulic cylinder 33 by a certain stroke operation of the other hydraulic cylinder 33. 3 3 to no.
  • the communication is performed by the neurot signal pressure output through the pilot passage 37, and one fluid pressure cylinder is connected to the other output port 20 from the other output port 20.
  • one of the fluid pressure cylinders 32 to 32 is connected.
  • the neuron signal pressure is output to the orifice passage 35, and the one or more nil port operation check valve 34 is generated by the norode signal pressure.
  • the other fluid from one output port 19 is The working fluid is supplied to the head side of the pressure cylinder 33, and the other fluid pressure cylinder 33 operates in the extension direction.
  • the other output port 20 outputs another fluid pressure switch.
  • the working fluid is supplied to the rod side of the cylinder 3 3, and the other fluid pressure cylinder 3 3 operates in the reverse direction, that is, in the contraction direction, and the piston 3 rotates. 3a operates a certain stroke indicated by a two-dot chain line.
  • the noise signal pressure is output from the other fluid pressure cylinder 33 to the nozzle port passage 37, and the noise port signal pressure is reduced to the noise port signal pressure.
  • the other nozzle port operation check valve 36 is operated to communicate with the other output port 20, and the working fluid is supplied to the rod side of one fluid pressure cylinder 32 from the other output port 20. Is supplied, and the one hydraulic cylinder 32 operates in the reverse direction, that is, the contraction direction.
  • FIG. 32 One hydraulic cylinder 32 and another hydraulic cylinder 33 in such a sequence control circuit is shown in FIG.
  • the lead 3b is applied to the hydraulic cylinders 7 and 8 which extend and retract, respectively.
  • the first-stage telescopic screw 3a is extended and contracted by one fluid pressure cylinder 32, and the second-stage telescopic screw 3a is operated.
  • the valve 3b is extended and retracted by another fluid pressure cylinder 33.
  • the two-stage expansion and contraction screw device 3 is expanded in the order of the fluid stage cylinder 32 of the first stage and the fluid pressure cylinder 33 of the second stage.
  • the contraction in the order of the first stage fluid pressure cylinder 32, the second stage expansion and contraction thread 3 b, and the first stage expansion and contraction thread Store in the order of 3a.
  • pilot operated check valves 34, 36 and the passages 26, 27 30, 31, 31, 35, 37 for these pilot operated check valves are provided.
  • This is a circuit in which expansion and contraction operations of a plurality of fluid pressure cylinders 32 and 33 are sequence-controlled by a single electromagnetic switching valve 15. Therefore, by simply switching one electromagnetic switching valve 15 with one operating switch 21, the expansion and contraction of the plurality of fluid pressure cylinders 32 and 33 can be easily performed. Control.
  • first-stage expansion / decompression thread 3a and the second-stage expansion / contraction thread 3b of the two-stage expansion / contraction thread device 3 are replaced by 1 It can be easily operated with only one electromagnetic switching valve 15 and operation switch 21, and the operation of these expansion and contraction threads 3 a and 3 b is possible. Lay evening work is easy become .
  • FIG. 2 shows another embodiment.
  • the same parts as those in the embodiment shown in FIG. 1 are denoted by the same reference numerals, and the description thereof will be omitted.
  • a switching valve for controlling the working fluid supplied from a fluid pressure pump (not shown) in one direction and having the other output ports 19 and 20 in the other direction.
  • a plurality of hydraulic cylinders 32, 33, 33 connected in parallel between the output port 19 on one side of the switching valve 15 and the output port 20 on the other side. 41, and by the constant stroke operation of the fluid cylinder with the highest operating order, the noise signal pressure output from the fluid cylinder
  • a plurality of pipe-port operation check valves 34, 36, 42, 43 for supplying working fluid to the fluid pressure cylinders which are in communication with each other and which are lower in the operation order.
  • a non-rotating passage 44 is provided between the fluid pressure cylinder 33 and the non-rotating check valve 42, and the fluid pressure cylinder 41 and the non-rotating cylinder are connected to each other.
  • a neurotte passage 45 is provided between the air inlet and outlet check valve 43.
  • the operation order during the cylinder extension operation is the order of the fluid pressure cylinder 32, the fluid pressure cylinder 33, and the fluid pressure cylinder 41.
  • the operation order during the contraction operation is the order of the fluid pressure cylinder 41, the fluid pressure cylinder 33, and the fluid pressure cylinder 32.
  • the switching valve 15 is switched to one of the switching positions a.
  • the fluid pressure cylinder 32 extends in the extending direction.
  • the hydraulic cylinder 32 and the pilot passage 35 are connected.
  • the pilot signal pressure is output, and the nozzle port operation check valve 34 communicates with the pilot signal pressure to cause one of the output ports to operate.
  • the working fluid is supplied to the fluid cylinder 3 3, which is relatively lower in the operation order from the port 19, and the fluid cylinder 33 operates in the extension direction. .
  • the hydraulic cylinder 33 and the pilot passage 4 extend from the hydraulic cylinder 33 at the same time.
  • a pilot signal pressure is output to 4 and the pilot operation check valve 42 is operatively connected to the pilot signal by the pilot signal pressure.
  • the working fluid is supplied from the output port 19 of the hydraulic cylinder 41 relative to the lower working order relative to the working port, and the hydraulic cylinder 41 extends the working cylinder.
  • the switching valve 15 is switched to the other switching position b, and the operating flow from the other output port 20 to the fluid pressure cylinder 41 is changed.
  • the fluid pressure cylinder 41 operates in the reverse direction, that is, in the contraction direction, and at the same time when a certain stroke operation is performed.
  • This fluid Shea is re-down da 4 1 or et al Roh A B Uz door passage 45 to Roh 1? I opening Tsu door signal pressure is output, Pa Ri by the Roh I opening Tsu door signal pressure of this A B Tsu door Operation
  • the check valve 4 3 is operated to communicate, and the fluid pressure cylinder is connected from the other output port 20.
  • the working fluid is supplied to 33, and the fluid pressure cylinder 33 operates in the reverse direction, that is, in the contraction direction.
  • the hydraulic cylinder 33 and the pilot passage 37 extend from the hydraulic cylinder 33 at the same time.
  • the neurot signal pressure is output to this pin.
  • the pilot operation check valve 36 communicates with the pilot signal pressure according to the pilot signal pressure, and the working fluid is supplied to the fluid pressure cylinder 32 relatively lower in the operation order. This fluid pressure cylinder 32 operates in the contraction direction.
  • the switching valve 15 is an electromagnetic switching valve that can be switched by an electric signal input from the operation switch 21 similarly to the one shown in FIG. By simply switching one electromagnetic switching valve 15 with one operating switch 21, a plurality of hydraulic cylinders 32, 33, and 41 can be operated. The expansion and contraction operation can be sequence controlled.
  • the circuit shown in FIGS. 1 and 2 is a pilot operated non-return valve 34, 36, 36 as an alternative to an electromagnetic switching valve. Since simple hydraulic sequence control using 42, 43 is used, that is, electric control using complex switches, etc., or complicated electronic control Since no static control is required, reliability is guaranteed, and no major design changes are required, making practical application easy.
  • This control circuit can be applied to the pneumatic circuit.
  • the hydraulic pump 12 and the hydraulic cylinders 32, 33, 41 are used for the pneumatic pump and pneumatic circuit.
  • a cylinder may be used.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Road Paving Machines (AREA)

Abstract

Une pluralité de cylindres hydrauliques (32, 33) sont connectés en parallèle entre un orifice de sortie (19) et l'autre orifice de sortie (20) d'une soupape de commutation (15) laquelle commande de façon directionnelle l'alimentation en fluide de travail provenant d'une pompe hydraulique (12). Une soupape pilote de non retour (34), avec le cylindre hydraulique (32), est reliée en parallèle à l'orifice de sortie (19) de la soupape de commutation (15). Une pression de signal pilote délivrée en provenance du cylindre hydraulique (32) par le fonctionnement en extension du cylindre hydraulique (32) actionne la soupape de non retour (34) pour permettre une communication de manière à acheminer du fluide de travail vers le cylindre hydraulique (33). Une soupape pilote de non retour (36) avec le cylindre hydraulique (33), est reliée en parallèle à l'orifice de sortie (20) de la soupape de commutation (15). Une pression de signal pilote délivrée en provenance du cylindre hydraulique (33) par le fonctionnement en contraction du cylindre hydraulique (33) actionne la soupape de non retour (36) pour permettre une communication afin d'acheminer du fluide de travail vers le cylindre hydraulique (32).
PCT/JP2001/001623 2000-09-13 2001-03-02 Circuit de commande de sequence WO2002023049A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000-278437 2000-09-13
JP2000278437A JP3542953B2 (ja) 2000-09-13 2000-09-13 シーケンス制御回路

Publications (1)

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WO2002023049A1 true WO2002023049A1 (fr) 2002-03-21

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102041770A (zh) * 2009-10-20 2011-05-04 约瑟夫福格勒公司 用于路面整修机的刮板
CN102433825A (zh) * 2011-09-29 2012-05-02 三一重工股份有限公司 用于摊铺机找平的自适应控制方法、控制器及摊铺机
WO2012094894A1 (fr) * 2011-01-13 2012-07-19 长沙中联重工科技发展股份有限公司 Appareil de commande séquentielle de mécanisme télescopique à plusieurs niveaux et équipement d'ingénierie comprenant ce dernier
CN103290759A (zh) * 2013-06-10 2013-09-11 中山市拓维电子科技有限公司 摊铺机自动找平控制系统及方法
CN105625145A (zh) * 2016-03-22 2016-06-01 西安依恩驰网络技术有限公司 一种悬挂式摊铺机找平装置及其找平方法
CN105951565A (zh) * 2016-05-23 2016-09-21 安徽海澄德畅电子科技有限公司 混凝土振捣尺的可调式刀片组件

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4912930B2 (ja) * 2007-03-20 2012-04-11 古河産機システムズ株式会社 貨物自動車の荷台傾斜装置
CN105626604A (zh) * 2014-11-05 2016-06-01 陕西中大机械集团有限责任公司 用于摊铺机伸缩熨平防反拱的液压控制回路

Citations (5)

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Publication number Priority date Publication date Assignee Title
JPS4737802Y1 (fr) * 1969-07-26 1972-11-15
JPS5455951A (en) * 1978-09-27 1979-05-04 Unic Corp Cylinder expansion device
JPS60196409A (ja) * 1984-03-16 1985-10-04 Tokyu Car Corp 多段伸縮ブ−ムの伸縮装置
JPH07102521A (ja) * 1993-10-08 1995-04-18 Shin Caterpillar Mitsubishi Ltd 舗装機械等のスクリード装置
US5613418A (en) * 1992-03-25 1997-03-25 Man Gutehoffnungshutte Aktiengesellschaft Multiple-stage hydraulic cylinder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4737802Y1 (fr) * 1969-07-26 1972-11-15
JPS5455951A (en) * 1978-09-27 1979-05-04 Unic Corp Cylinder expansion device
JPS60196409A (ja) * 1984-03-16 1985-10-04 Tokyu Car Corp 多段伸縮ブ−ムの伸縮装置
US5613418A (en) * 1992-03-25 1997-03-25 Man Gutehoffnungshutte Aktiengesellschaft Multiple-stage hydraulic cylinder
JPH07102521A (ja) * 1993-10-08 1995-04-18 Shin Caterpillar Mitsubishi Ltd 舗装機械等のスクリード装置

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102041770A (zh) * 2009-10-20 2011-05-04 约瑟夫福格勒公司 用于路面整修机的刮板
EP2325390A1 (fr) * 2009-10-20 2011-05-25 Joseph Vögele AG Poutre lisseuse et finisseuse de route
US8353642B2 (en) 2009-10-20 2013-01-15 Joseph Vögele Screed for road finishing machine
CN102041770B (zh) * 2009-10-20 2014-11-19 约瑟夫福格勒公司 用于路面整修机的刮板
WO2012094894A1 (fr) * 2011-01-13 2012-07-19 长沙中联重工科技发展股份有限公司 Appareil de commande séquentielle de mécanisme télescopique à plusieurs niveaux et équipement d'ingénierie comprenant ce dernier
CN102433825A (zh) * 2011-09-29 2012-05-02 三一重工股份有限公司 用于摊铺机找平的自适应控制方法、控制器及摊铺机
CN102433825B (zh) * 2011-09-29 2014-04-16 三一重工股份有限公司 用于摊铺机找平的自适应控制方法、控制器及摊铺机
CN103290759A (zh) * 2013-06-10 2013-09-11 中山市拓维电子科技有限公司 摊铺机自动找平控制系统及方法
CN105625145A (zh) * 2016-03-22 2016-06-01 西安依恩驰网络技术有限公司 一种悬挂式摊铺机找平装置及其找平方法
CN105951565A (zh) * 2016-05-23 2016-09-21 安徽海澄德畅电子科技有限公司 混凝土振捣尺的可调式刀片组件

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Publication number Publication date
JP3542953B2 (ja) 2004-07-14
JP2002089514A (ja) 2002-03-27

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