CN109538574A - Open body hopper hydraulic cylinder - Google Patents

Open body hopper hydraulic cylinder Download PDF

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Publication number
CN109538574A
CN109538574A CN201811620988.6A CN201811620988A CN109538574A CN 109538574 A CN109538574 A CN 109538574A CN 201811620988 A CN201811620988 A CN 201811620988A CN 109538574 A CN109538574 A CN 109538574A
Authority
CN
China
Prior art keywords
check valve
pilot
port
hydraulic fluid
fluid port
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201811620988.6A
Other languages
Chinese (zh)
Inventor
叶帮正
邓正刚
叶茂
虞尚均
叶宇昂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LUZHOU LONGMATAN DISTRICT CHANGJIANG HYDRAULIC COMPONENT Co Ltd
Original Assignee
LUZHOU LONGMATAN DISTRICT CHANGJIANG HYDRAULIC COMPONENT Co 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 LUZHOU LONGMATAN DISTRICT CHANGJIANG HYDRAULIC COMPONENT Co Ltd filed Critical LUZHOU LONGMATAN DISTRICT CHANGJIANG HYDRAULIC COMPONENT Co Ltd
Priority to CN201811620988.6A priority Critical patent/CN109538574A/en
Publication of CN109538574A publication Critical patent/CN109538574A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08Characterised by the construction of the motor unit
    • F15B15/14Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423Component parts; Constructional details
    • F15B15/1457Piston rods
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/027Check valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08Characterised by the construction of the motor unit
    • F15B15/14Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423Component parts; Constructional details
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20Other details, e.g. assembly with regulating devices
    • F15B15/22Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke

Landscapes

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

Abstract

The invention discloses one kind to open body hopper hydraulic cylinder, including cylinder barrel, rod chamber hydraulic fluid port, rodless cavity hydraulic fluid port, guide sleeve, piston rod, the piston being coupled on piston rod, sealing ring, oil path block is installed on cylinder barrel, two actuator ports are equipped in oil path block, check valve, pilot operates check valve and pilot closes check valve, one actuator port and rodless cavity hydraulic fluid port, the pilot port of liquid outlet and pilot operation check valve that pilot closes check valve is connected, another actuator port is connected with the pilot port that the inlet of check valve and pilot close check valve, the liquid outlet of check valve is connected with the inlet of inlet and pilot operation check valve that pilot closes check valve, the liquid outlet of pilot operation check valve is connected with rod chamber hydraulic fluid port;The present invention can prevent hull from generating vibration and the mechanical breakdowns such as noise and rod fracture, and increase the stability of hydraulic cylinder works state, also reduce the cost of entire control system.

Description

Open body hopper hydraulic cylinder
Technical field
Body hopper hydraulic cylinder is opened for dredging vessel the present invention relates to a kind of.
Background technique
It opens body hopper hydraulic cylinder and is applied to a kind of large-scale dredging vessel in common sea, which is that will dredge The water-bed mud mixture or solid transportation to appointed place that ship excavates are laid down;Cargo ship two is refuted between body using opening body hopper liquid Cylinder pressure carries out closing and opening operation.
Existing body hopper hydraulic cylinder of opening is only single executing agency, hydraulic cylinder piston rod stretch out or retract unlatching or Body is refuted in closing.And practical application, because of working condition requirement, needs split body hopper cylinder rod chamber to be latched when on ship, prevents Oil cylinder leakage, and refute body open when, rod chamber locking cannot generate hysteresis, be otherwise also easy to produce because open body hopper hydraulic cylinder dash forward The vibration of hull caused by so closing and high-decibel noise, it is serious to will cause other mechanical breakdowns such as hydraulic cylinder piston rod fracture.
To solve above-mentioned condition, conventionally used mode is the setting one on the control system pipeline for opening body hopper hydraulic cylinder Hydraulic control one-way valve controls the opening and closing that the valve is locked to be latched hydraulic cylinder rod chamber, and by related oil circuit;But there are following masters for it Want problem:
1. the oil circuit that hydraulic control one-way valve is opened uses internal control, because weight active force, which acts on, refutes body under unladen state, Accelerate so that hydraulic cylinder piston rod stretches out speed, the repairing of hydraulic cylinder rodless cavity is insufficient, and hydraulic control one-way valve controls oil circuit decompression, hydraulic control Check valve moment close, open body hopper hydraulic cylinder at this time and stop suddenly, cause hull shake and noise, or even can because The mechanical breakdowns such as rod fracture are easily generated under the action of piston rod movement trend and weight.
2. for prevent problem 1 the phenomenon that, hydraulic control one-way valve use external control type, at this time hydraulic system more increase an oil circuit with And reversal valve, integrated oil path is more complex, and leakage is caused to cause the unstable of hydraulic cylinder pressure maintaining, follow-up maintenance increased costs.
3. increased hydraulic control one-way valve, on oil circuit, chaotropic cylinder pressure has a distance, this section is apart from caused hysteresis Increase hydraulic cylinder works state stability hidden danger.
Summary of the invention
The purpose of the present invention is In view of the above shortcomings of the prior art, providing one kind to open body hopper hydraulic cylinder, it is kept away Pilot operated valve device moment caused by having exempted from because of hydraulic cylinder rodless cavity repairing deficiency closes, and can prevent hull from generating vibration and noise and piston The mechanical breakdowns such as bar fracture, and the stability of hydraulic cylinder works state is increased, also reduce the cost of entire control system.
In order to achieve the above objectives, of the invention to open body hopper hydraulic cylinder, including cylinder barrel, rod chamber hydraulic fluid port, rodless cavity hydraulic fluid port, Guide sleeve, piston rod, the piston being coupled on piston rod, sealing ring, it is characterised in that oil path block is installed on cylinder barrel, in oil circuit Be equipped with two actuator ports, a check valve, pilot operation check valve and a pilot in block and close check valve, wherein an actuator port with The pilot port of liquid outlet and pilot operation check valve that rodless cavity hydraulic fluid port, pilot close check valve is connected, another actuator port and list The pilot port for closing inlet from check valve to valve and pilot is connected, the liquid outlet of check valve and pilot close check valve inlet and The inlet that pilot operates check valve is connected, and the liquid outlet of pilot operation check valve is connected with rod chamber hydraulic fluid port.
The present invention is able to achieve piston rod and normally stretches out, withdraws, and stretches out in the rodless cavity oil inlet to cylinder barrel, piston rod When, the oil liquid in rod chamber can continue into rodless cavity, and oil return box, not ensure that the whole oil circuit of hydraulic cylinder rodless cavity will not generate Negative pressure, pilot operated valve device moment caused by avoiding because of hydraulic cylinder rodless cavity repairing deficiency close, and can prevent hull from generating vibration and making an uproar The mechanical breakdowns such as sound and rod fracture;And entire hydraulic control system is integrated on cylinder barrel, the oil liquid in rod chamber enters rodless cavity Repairing in time, without hysteresis, increase the stability of hydraulic cylinder works state, pass through the integrated morphology of oil path block, oil circuit letter Single reliable, No leakage, reduces the cost of entire control system;
As a further improvement of the present invention, the cushion chamber communicated with rod chamber hydraulic fluid port is equipped on the inside of guide sleeve, in piston rod On be installed with cushion collar corresponding with cushion chamber;Buffering effect can be played to the stretching of piston rod, avoid impacting caused vibration And noise;
As a further improvement of the present invention, be equipped in guide sleeve connection cushion chamber and inner cavity of cylinder from oil return circuit, Buffering valve group is equipped with from oil return circuit;The speed of adjustable buffering;
As a further improvement of the present invention, the oil circuit of connection rod chamber hydraulic fluid port and inner chamber of cylinder block, the oil are equipped in guide sleeve Unidirectional valve group is equipped in road;When piston rod is withdrawn, oil pressure active area can be increased, reduce starting pressure when withdrawing, quickly Recycle piston rod;
In conclusion ship can be prevented the invention avoids closing because of pilot operated valve device moment caused by hydraulic cylinder rodless cavity repairing is insufficient Body generates vibration and the mechanical breakdowns such as noise and rod fracture, and increases the stability of hydraulic cylinder works state, also reduces The cost of entire control system.
Detailed description of the invention
Fig. 1 is the main view of the embodiment of the present invention.
Fig. 2 is Fig. 1 top view.
Fig. 3 is the hydraulic schematic diagram of the embodiment of the present invention.
Fig. 4 is enlarged drawing at the I of Fig. 2.
Fig. 5 is enlarged drawing at the II of Fig. 1.
Specific embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
As shown in Figures 1 to 5, which opens body hopper hydraulic cylinder, including being equipped with the cylinder barrel 1 of rodless cavity hydraulic fluid port 3, leading To set 4, rod chamber hydraulic fluid port 2, piston rod 5, the piston 6 being coupled on piston rod 5, sealing ring 7, oil path block is installed in the welding of cylinder 1 8, two actuator port 9(A are equipped in oil path block 8) and 10(B), a check valve 11, a pilot an operation check valve 12 and pilot Check valve 13 is closed, wherein an actuator port 9(A) it is single with rodless cavity hydraulic fluid port 3, the liquid outlet of pilot pass check valve 13 and pilot operation Be connected to the pilot port of valve 12 by the oil circuit inside oil path block 8, another actuator port 10(B) and check valve 11 inlet And the pilot port of pilot pass check valve 13 is connected by the oil circuit inside oil path block 8, the liquid outlet and pilot of check valve 11 close list It is connected to the inlet of the inlet and pilot of valve 13 operation check valve 12 by the oil circuit inside oil path block 8, pilot operation is single It is connected to the liquid outlet of valve 12 with rod chamber hydraulic fluid port 2 by pipeline 14;It is equipped on the inside of guide sleeve 4 and is communicated with rod chamber hydraulic fluid port 2 Cushion chamber 15, cushion collar 16 corresponding with cushion chamber 15 is installed on piston rod 5;Connection buffering is equipped in guide sleeve 4 Chamber 15, from oil return circuit 19, buffering valve group 17 is being equipped with from oil return circuit 19 with inner cavity of cylinder;The company of being equipped in guide sleeve 4 It is connected with the oil circuit of rod cavity hydraulic fluid port 2 Yu inner chamber of cylinder block, unidirectional valve group 18 is equipped in the oil circuit;
The course of work of the present invention is as follows:
When cargo ship two is refuted body and need to be closed, the rod chamber 2 for opening body hopper hydraulic cylinder needs oil inlet, and oil liquid is logical from actuator port 10(B) Enter, oil liquid enters the pilot port that pilot closes check valve 13 with the time-division all the way, closes check valve 13 because of pilot and closes at this time, oil liquid is unidirectional Valve 11 and pilot operate check valve 12, the rod chamber of cylinder barrel 1, and piston rod 5 retracts, and refute body closing;
When cargo ship unloading, two refute body and need to open, and oil liquid is passed through from actuator port 9(A), and oil liquid a part enters the nothing of cylinder barrel 1 Rod cavity enters the pilot port of pilot operation check valve 12 with the time-division all the way, because pilot operation check valve 12 is opened in pilot effect, Rod chamber oil liquid operates check valve 12 by the pilot opened by pilot, and because check valve 11 is closed at this time, oil liquid cannot lead to Cross actuator port 10(B) oil return box, due to the rodless cavity the oil effect area of cylinder body 1 and greater than rod chamber the oil effect area (because presence of piston rod 5), so that operating the oil liquid pressure of check valve 12 more compared with the oil liquid pressure in rodless cavity by pilot Height closes 13 both ends of check valve in pilot and forms pressure difference, and final pilot of opening closes check valve 13, so that rod chamber oil liquid is held Continuous to enter rodless cavity, oil return box, not ensure that the whole oil circuit of rodless cavity will not generate negative pressure, and hydraulic cylinder differential relationship is set up, this A relationship can solve pilot operation check valve 12 pilot port pressure transient caused by suddenly close and rodless cavity Repairing is insufficient, can prevent hull from generating vibration and the mechanical breakdowns such as high-decibel noise or even rod fracture;Due to entire hydraulic control The system integration on cylinder barrel 1, the oil liquid in rod chamber enter rodless cavity repairing in time, without hysteresis, increase hydraulic cylinder work The stability for making state, by the integrated morphology of oil path block 8, oil circuit is simple and reliable, No leakage, reduces entire control system Cost;Cushion collar 16 can play buffering effect to the stretching of piston rod 5, avoid vibration and noise caused by impacting;Pass through adjusting Valve group 17 is buffered, the speed of buffering is adjusted;When piston rod is withdrawn, unidirectional valve group 18 is opened, and can increase oil pressure active area, Starting pressure when withdrawing is reduced, piston rod 5 is quickly recycled.

Claims (4)

1. one kind opens body hopper hydraulic cylinder, including cylinder barrel, rod chamber hydraulic fluid port, rodless cavity hydraulic fluid port, guide sleeve, piston rod, it is coupled to work Piston, sealing ring on stopper rod, it is characterised in that oil path block is installed on cylinder barrel, in oil path block be equipped with two actuator ports, One check valve, pilot operation check valve and a pilot close check valve, wherein an actuator port and rodless cavity hydraulic fluid port, pilot close list It is connected to the pilot port of the liquid outlet and pilot of valve operation check valve, the inlet and pilot of another actuator port and check valve close The pilot port of check valve is connected, and the liquid outlet and pilot of check valve close the inlet of check valve and the feed liquor of pilot operation check valve Mouth is connected, and the liquid outlet of pilot operation check valve is connected with rod chamber hydraulic fluid port.
2. opening body hopper hydraulic cylinder as described in claim 1, it is characterised in that be equipped with and rod chamber hydraulic fluid port on the inside of guide sleeve The cushion chamber communicated is installed with cushion collar corresponding with cushion chamber on the piston rod.
3. opening body hopper hydraulic cylinder as claimed in claim 1 or 2, it is characterised in that be equipped in guide sleeve connection cushion chamber with Inner cavity of cylinder from oil return circuit, buffering valve group is being equipped with from oil return circuit.
4. opening body hopper hydraulic cylinder as claimed in claim 3, it is characterised in that be equipped with connection rod chamber hydraulic fluid port in guide sleeve With the oil circuit of inner chamber of cylinder block, the oil circuit is interior to be equipped with unidirectional valve group.
CN201811620988.6A 2018-12-28 2018-12-28 Open body hopper hydraulic cylinder Pending CN109538574A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811620988.6A CN109538574A (en) 2018-12-28 2018-12-28 Open body hopper hydraulic cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811620988.6A CN109538574A (en) 2018-12-28 2018-12-28 Open body hopper hydraulic cylinder

Publications (1)

Publication Number Publication Date
CN109538574A true CN109538574A (en) 2019-03-29

Family

ID=65857058

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811620988.6A Pending CN109538574A (en) 2018-12-28 2018-12-28 Open body hopper hydraulic cylinder

Country Status (1)

Country Link
CN (1) CN109538574A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202132304U (en) * 2011-07-29 2012-02-01 合肥长源液压股份有限公司 High-pressure oil cylinder with combined buffering device in rodless cavity
CN202597302U (en) * 2012-05-29 2012-12-12 郑州正弘桩工机械制造有限公司 Hydraulic system and long spiral drilling machine with hydraulic system
CN203532390U (en) * 2013-10-31 2014-04-09 长沙中联消防机械有限公司 Hydraulic cylinder quick motion loop and engineering machine
CN204312429U (en) * 2014-11-24 2015-05-06 番禺珠江钢管有限公司 A kind of hydraulic differential circuit system be made up of screw-in cartridge valve
CN204529164U (en) * 2015-03-27 2015-08-05 湖北佳恒科技有限公司 A kind of folding-jib truck-mounted crane telescopic hydraulic cylinder shock absorber
CN205277980U (en) * 2016-01-08 2016-06-01 宁波中天联合机电制造有限公司 Hydraulic lifting platform lifts hydro -cylinder
JP2016118293A (en) * 2014-12-22 2016-06-30 古河ロックドリル株式会社 Hydraulic circuit for hydraulic device
CN207033886U (en) * 2017-06-16 2018-02-23 江苏恒立液压股份有限公司 Split type dump hopper barge drives body oil cylinder cushion
CN209398659U (en) * 2018-12-28 2019-09-17 泸州市龙马潭区长江液压件有限公司 Open body hopper hydraulic cylinder

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202132304U (en) * 2011-07-29 2012-02-01 合肥长源液压股份有限公司 High-pressure oil cylinder with combined buffering device in rodless cavity
CN202597302U (en) * 2012-05-29 2012-12-12 郑州正弘桩工机械制造有限公司 Hydraulic system and long spiral drilling machine with hydraulic system
CN203532390U (en) * 2013-10-31 2014-04-09 长沙中联消防机械有限公司 Hydraulic cylinder quick motion loop and engineering machine
CN204312429U (en) * 2014-11-24 2015-05-06 番禺珠江钢管有限公司 A kind of hydraulic differential circuit system be made up of screw-in cartridge valve
JP2016118293A (en) * 2014-12-22 2016-06-30 古河ロックドリル株式会社 Hydraulic circuit for hydraulic device
CN204529164U (en) * 2015-03-27 2015-08-05 湖北佳恒科技有限公司 A kind of folding-jib truck-mounted crane telescopic hydraulic cylinder shock absorber
CN205277980U (en) * 2016-01-08 2016-06-01 宁波中天联合机电制造有限公司 Hydraulic lifting platform lifts hydro -cylinder
CN207033886U (en) * 2017-06-16 2018-02-23 江苏恒立液压股份有限公司 Split type dump hopper barge drives body oil cylinder cushion
CN209398659U (en) * 2018-12-28 2019-09-17 泸州市龙马潭区长江液压件有限公司 Open body hopper hydraulic cylinder

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