CN100385126C - Valve oil supplement method for series connection cylinders and apparatus therefor - Google Patents

Valve oil supplement method for series connection cylinders and apparatus therefor Download PDF

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Publication number
CN100385126C
CN100385126C CNB200510032309XA CN200510032309A CN100385126C CN 100385126 C CN100385126 C CN 100385126C CN B200510032309X A CNB200510032309X A CN B200510032309XA CN 200510032309 A CN200510032309 A CN 200510032309A CN 100385126 C CN100385126 C CN 100385126C
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Prior art keywords
oil cylinders
oil
serial
controller
valve
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CNB200510032309XA
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CN1763385A (en
Inventor
易小刚
陈林
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Sany Heavy Industry Co Ltd
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Sany Heavy Industry Co Ltd
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Priority to CNB200510032309XA priority Critical patent/CN100385126C/en
Publication of CN1763385A publication Critical patent/CN1763385A/en
Priority to PCT/CN2006/001711 priority patent/WO2007048297A1/en
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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
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • 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
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6336—Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration
    • 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7114—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators
    • F15B2211/7121—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators the chambers being connected in series

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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)
  • Actuator (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

The present invention discloses a valve oil supplement method for series connection oil cylinders. Firstly, the method respectively detects whether two piston rods of the series connection oil cylinders reach normal forward extending position and normal retracting position when in use; then, the detected position signals are transmitted to a controller, and the controller judges and controls an electromagnetic valve which is communicated with communicating cavities of the series connection oil cylinders according to the position signals; the electromagnetic valve is used for supplementing oil or discharging oil for the communicating cavities of the series connection oil cylinders. The device comprises a piston rod position information collecting device, the controller, and the electromagnetic valve used for supplementing oil or discharging oil. The present invention can monitor whether the oil quantity in the communicating cavities in the series connection oil cylinders is normal in time and can effectively adjust the oil quantity. The present invention has the advantages of simple structure, high capability of supplement and high reliability.

Description

The valve oil supplement method and the device thereof that are used for serial oil cylinders
Technical field
The present invention is mainly concerned with a kind of valve oil supplement method and device thereof that is used for serial oil cylinders.
Background technique
In the prior art, in engineering machinery field, through regular meeting with the use that is together in series of two oil cylinders, such as the master cylinder in the concrete pumping machinery.In use and since in the system valve or oil cylinder in let out, can cause the oil mass of oil cylinder communicated cavity to change, if untimely taking measures can make stroke shorten, and, can cause the oil cylinder stroke total loss at last along with the accumulation of time.For example, as shown in Figure 1,, cause that right piston rod 5 stretches out not in place because the oil mass of communicated cavity 3 increases; As shown in Figure 2, because the oil mass of communicated cavity 3 reduces, cause that 2 withdrawals of left piston bar are not in place.Be head it off, present method all is to open repairing hole 6 on cylinder tube, when proper functioning, the left piston bar 2 and the right piston rod 5 of two oil cylinders pass through the repairing hole simultaneously, part oil enters communicated cavity 3 through front end repairing hole 6, with advancing also to have one fen oil to release from communicated cavity 3, make the oil mass of communicated cavity 3 keep balance through repairing hole 6, the rear end of another oil cylinder.When oil cylinder communicated cavity 3 oil masses increase, after the oil cylinder left piston bar 2 that contracts crossed the repairing hole, and the right piston rod 5 of the oil cylinder that protracts no show repairing still hole 6 (referring to Fig. 3), at this moment, have only the oil of communicated cavity 3 to release through repairing hole, rear end 6, and front end repairing hole 6 does not mend to communicated cavity 3, and communicated cavity 3 oil masses are reduced, and recovers normal; Equally, if communicated cavity 3 oil masses reduce, the right piston rod 5 of the oil cylinder that protracts has been crossed repairing hole 6, oil cylinder left piston bar 2 holes of no show repairing still 6 (referring to Fig. 4) of then contracting, therefore have only to communicated cavity 3 repairings and do not have communicated cavity 3 outside drainings, communicated cavity 3 oil masses are increased, recover normal.
Though above-mentioned to adjust the communicated cavity oil mass with repairing hole method simple, owing to will on cylinder tube, opening repairing hole 6, and to pass through repairing hole 6 during the pistons work of oil cylinder, there is following several problem:
1, piston seal is required height, general Sealing can not meet the demands, and has increased sealing difficulty, has reduced functional reliability;
2, the restriction that is sealed, repairing hole can not be done greatly, and repairing is limited in one's ability;
3, strengthened the oil cylinder manufacture difficulty.
Summary of the invention
The technical problem to be solved in the present invention just is: at the technical problem of prior art existence, whether the invention provides a kind of interior communicated cavity oil mass of serial oil cylinders that can in time monitor normally also in time effectively adjusts, and valve oil supplement method that is applied to serial oil cylinders and device thereof simple in structure, that compensation ability is strong, reliability is high are arranged.
In order to solve the problems of the technologies described above, the solution that the present invention proposes is: a kind of valve oil supplement method that is used for serial oil cylinders, it is characterized in that: whether arrive normally protract position and normal withdrawn position during at first respectively to the work of two piston rods of serial oil cylinders and carry out position probing, send detected position signal to controller, the solenoid valve that controller is judged according to position signal and control is communicated with the communicated cavity of serial oil cylinders carries out repairing or draining by solenoid valve to the communicated cavity of serial oil cylinders.
In the deterministic process of described position signal, the piston rod that protracts of judging serial oil cylinders when detection arrives the position of normally protracting, and withdrawal piston rod no show normal withdrawn position, controller can be judged low on fuel in the communicated cavity, and control electromagnetic valve is carried out repairing to the communicated cavity of serial oil cylinders.
In the deterministic process of described position signal, the piston rod no show of protracting of judging serial oil cylinders when the detection position of normally protracting, and the withdrawal piston rod arrives normal withdrawn position, and controller can judge that oil mass is too much in the communicated cavity, and control electromagnetic valve is carried out draining to the communicated cavity of serial oil cylinders.
A kind of valve recharging oil device that is used for serial oil cylinders, it is characterized in that: it comprises controller, solenoid valve and position information collecting device, described controller one end links to each other with solenoid valve, and the other end links to each other with the position information collecting device, and described solenoid valve keeps being communicated with the communicated cavity of serial oil cylinders.
Described position information collecting device adopts position switch or displacement transducer.
Compared with prior art, the invention has the advantages that:
1, valve oil supplement method and the device thereof that is used for serial oil cylinders of the present invention, needn't carry out structure of modification to serial oil cylinders itself, therefore the fabricating cost and the difficulty of processing of oil cylinder have been reduced, and method of the present invention can be monitored with repairing in real time, rush down the oil operation the working state of serial oil cylinders, sensitivity and validity height have improved the reliability of serial oil cylinders work to a certain extent;
2, valve oil supplement method and the device thereof that is used for serial oil cylinders of the present invention, simple in structure, course of working is simple and easy, and the repairing amount is big, and regulating power is strong.
Description of drawings
Fig. 1 is the schematic representation that oil mass increases in the serial oil cylinders communicated cavity in the prior art;
Fig. 2 is the schematic representation that oil mass reduces in the serial oil cylinders communicated cavity in the prior art;
Fig. 3 is that available technology adopting repairing hole method solves the schematic representation that the interior oil mass of communicated cavity increases problem;
Fig. 4 is the schematic representation that available technology adopting repairing hole method solves oil mass minimizing problem in the communicated cavity;
Fig. 5 is that the present invention solves the schematic representation that the interior oil mass of communicated cavity increases problem;
Fig. 6 is the schematic representation that the present invention solves oil mass minimizing problem in the communicated cavity.
Marginal data
1, position information collecting device 2, left piston bar
3, communicated cavity 4, solenoid valve
5, right piston rod 6, repairing hole
7, controller
Embodiment
Below with reference to accompanying drawing the present invention is described in further details.
A kind of valve oil supplement method that is used for serial oil cylinders of the present invention, whether arrive normally protract position and normal withdrawn position when promptly at first respectively two piston rods of serial oil cylinders (left piston bar 2 and right piston rod 5) being worked and carry out position probing, send detected position information to controller 7, the solenoid valve 4 that controller 7 is judged according to position signal and control is communicated with the communicated cavity 3 of serial oil cylinders, the communicated cavity 3 by 4 pairs of serial oil cylinders of solenoid valve carries out repairing or draining.In the signal judgment process of position, the piston rod that protracts of judging serial oil cylinders when detection arrives the position of normally protracting, and withdrawal piston rod no show normal withdrawn position, controller 7 can be judged low on fuel in the communicated cavity 3, and the communicated cavity 3 of 4 pairs of serial oil cylinders of control electromagnetic valve carries out repairing.In the signal judgment process of position, the piston rod no show of protracting of judging serial oil cylinders when the detection position of normally protracting, and the withdrawal piston rod arrives normal withdrawn position, and controller 7 can judge that oil mass is too much in the communicated cavity 3, and the communicated cavity 3 of 4 pairs of serial oil cylinders of control electromagnetic valve carries out draining.
As shown in Figure 5 and Figure 6, the present invention is used for the embodiment of the valve recharging oil device of serial oil cylinders, it comprises position information collecting device 1, controller 7 and solenoid valve 4, these controller 7 one ends link to each other with solenoid valve 4, the other end links to each other with position information collecting device 1, and solenoid valve 4 keeps being communicated with the communicated cavity 3 of serial oil cylinders.This position information collecting device 1 can adopt position switch or displacement transducer.In the present embodiment, position information collecting device 1 comprises SQ1, SQ2, four position switchs of SQ3, SQ4, and wherein SQ1 and SQ3 are used to detect the position information of protracting of left piston bar 2, and SQ2, SQ4 are used for detecting the retracted position information of right piston rod 5.Station acquisition device 1 is sent the signal that collects into controller 7, and controller 7 judges it is needs repairing or draining according to position signal, realizes by control electromagnetic valve 4 then.Working principle: the SQ2 in position information collecting device 1 detects left piston bar 2 and has arrived normal withdrawn position, and when SQ3 detects the no show still of right piston rod 5 and normally protracts the position in the position information collecting device 1 (referring to Fig. 5), the oil mass that can judge in the communicated cavity 3 increases, at this moment the controller 7 electromagnet a that will control repairing solenoid valve 4 gets, make the oil of oil cylinder communicated cavity 3 release a part, make oil cylinder recover normal; When the SQ2 of position information collecting device 1 detects left piston bar 2 no show normal withdrawn position still, and detecting right piston rod 5, the SQ3 of position information collecting device 1 arrived when normally protracting the position (referring to Fig. 6), can judge oil mass minimizing in the communicated cavity 3, at this moment the controller 7 electromagnet b that will control repairing solenoid valve 4 gets, additional part oil to oil cylinder communicated cavity 3 makes oil cylinder recover the normal position.

Claims (5)

1. valve oil supplement method that is used for serial oil cylinders, it is characterized in that: whether arrive normally protract position and normal withdrawn position during at first respectively to the work of two piston rods of serial oil cylinders and carry out position probing, send detected position signal to controller, the solenoid valve that controller is judged according to position signal and control is communicated with the communicated cavity of serial oil cylinders carries out repairing or draining by solenoid valve to the communicated cavity of serial oil cylinders.
2. the valve oil supplement method that is used for serial oil cylinders according to claim 1, it is characterized in that: in the deterministic process of described position signal, the piston rod that protracts of judging serial oil cylinders when detection arrives the position of normally protracting, and withdrawal piston rod no show normal withdrawn position, controller can be judged low on fuel in the communicated cavity, and control electromagnetic valve is carried out repairing to the communicated cavity of serial oil cylinders.
3. the valve oil supplement method that is used for serial oil cylinders according to claim 1, it is characterized in that: in the deterministic process of described position signal, the piston rod no show of protracting of judging serial oil cylinders when the detection position of normally protracting, and the withdrawal piston rod arrives normal withdrawn position, controller can judge that oil mass is too much in the communicated cavity, and control electromagnetic valve is carried out draining to the communicated cavity of serial oil cylinders.
4. valve recharging oil device that is used for serial oil cylinders, it is characterized in that: whether it arrives the position information collecting device that normally protract position and normal withdrawn position are carried out position probing when comprising controller, solenoid valve and being used for respectively to two piston rods work of serial oil cylinders, described controller one end links to each other with solenoid valve, the other end links to each other with the position information collecting device, and described solenoid valve keeps being communicated with the communicated cavity of serial oil cylinders.
5. the valve recharging oil device that is used for serial oil cylinders according to claim 4 is characterized in that: described position information collecting device adopts position switch or displacement transducer.
CNB200510032309XA 2005-10-28 2005-10-28 Valve oil supplement method for series connection cylinders and apparatus therefor Active CN100385126C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CNB200510032309XA CN100385126C (en) 2005-10-28 2005-10-28 Valve oil supplement method for series connection cylinders and apparatus therefor
PCT/CN2006/001711 WO2007048297A1 (en) 2005-10-28 2006-07-17 An oil-supplementing method and apparatus for cylinders which are connected in series

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB200510032309XA CN100385126C (en) 2005-10-28 2005-10-28 Valve oil supplement method for series connection cylinders and apparatus therefor

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CN100385126C true CN100385126C (en) 2008-04-30

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CN101776107B (en) * 2010-03-24 2012-05-30 中联重科股份有限公司 Accurate stroke control method and stroke control device for series oil cylinders
CN101865169A (en) * 2010-06-09 2010-10-20 北京市三一重机有限公司 Synchronous drive control system and engineering machinery
CN102330715B (en) * 2011-07-14 2013-03-27 中联重科股份有限公司 Concrete pumping equipment, series oil cylinders and stroke adaptive tail end compensation method thereof
CN102410821B (en) * 2011-12-10 2013-10-23 中铁隧道装备制造有限公司 Displacement detection method and device for shield over cutter
CN102562712A (en) * 2012-02-17 2012-07-11 三一重工股份有限公司 Engineering machinery, pumping mechanism thereof and pumping hydraulic oil replenishing system
CN102705282B (en) * 2012-06-28 2015-07-15 中联重科股份有限公司 Concrete pumping equipment, and stroke control device and method for series oil cylinders
CN104591011A (en) * 2013-10-31 2015-05-06 北汽福田汽车股份有限公司 Crane jib switching valve, hydraulic control system and engineering machinery
CN104696296A (en) * 2013-12-04 2015-06-10 佛山市恒力泰机械有限公司 Hydraulic synchronization oil channel structure with bi-directional oil replenishing and discharging function
CN105317788B (en) * 2014-07-25 2017-12-05 中联重科股份有限公司 Concrete pumping equipment, and stroke control system, method and device for series oil cylinders
CN104355266B (en) * 2014-10-11 2017-04-26 泰兴市塔力机械制造有限公司 Lifting hydraulic control system
CN104832476B (en) * 2014-12-19 2017-08-04 北汽福田汽车股份有限公司 Hydraulic system of pump
CN104533860A (en) * 2014-12-26 2015-04-22 三一汽车制造有限公司 Pumping mechanism oil supplementing control system and concrete pumping machine
CN105840587B (en) * 2015-01-12 2018-01-02 中联重科股份有限公司 Oil supplementing and draining control equipment, system and method for pumping device and engineering machinery
CN105643969A (en) * 2016-01-08 2016-06-08 文登蓝岛建筑工程有限公司 Machine for oppositely pressing multiple groups of assembled SIPs
CN106704134A (en) * 2017-03-15 2017-05-24 吉孚艾（天津）压缩系统技术有限公司 Hydraulic free piston multi-phase mixed transportation device

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WO2007048297A1 (en) 2007-05-03

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Assignee: Tongyu County Sanyi Wind Power Equipment Technology Co., Ltd.

Assignor: Sanyi Heavy Industry Co., Ltd.

Contract record no.: 2010990000489

Denomination of invention: Valve oil supplement method for series connection cylinders and apparatus therefor

Granted publication date: 20080430

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Assignee: Tongyu County Sanyi Wind Power Equipment Technology Co., Ltd.

Assignor: Sanyi Heavy Industry Co., Ltd.

Contract record no.: 2010990000489

Date of cancellation: 20110402