CN1809698A - Support leg valve - Google Patents

Support leg valve Download PDF

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Publication number
CN1809698A
CN1809698A CNA2004800170115A CN200480017011A CN1809698A CN 1809698 A CN1809698 A CN 1809698A CN A2004800170115 A CNA2004800170115 A CN A2004800170115A CN 200480017011 A CN200480017011 A CN 200480017011A CN 1809698 A CN1809698 A CN 1809698A
Authority
CN
China
Prior art keywords
valve
customer
flow
priority
control valve
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.)
Granted
Application number
CNA2004800170115A
Other languages
Chinese (zh)
Other versions
CN100480517C (en
Inventor
M·马克隆德
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.)
HYDRAUTO VALVES AB
Original Assignee
HYDRAUTO VALVES AB
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 HYDRAUTO VALVES AB filed Critical HYDRAUTO VALVES AB
Publication of CN1809698A publication Critical patent/CN1809698A/en
Application granted granted Critical
Publication of CN100480517C publication Critical patent/CN100480517C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/162—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for giving priority to particular servomotors or users
    • 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
    • F15B13/022—Flow-dividers; Priority valves
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • 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
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • 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
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • 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
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/428—Flow control characterised by the type of actuation actuated by fluid pressure
    • 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
    • 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
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • F15B2211/6054—Load sensing circuits having valve means between output member and the load sensing circuit using shuttle valves
    • 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
    • F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
    • 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
    • F15B2211/78—Control of multiple output members
    • F15B2211/781—Control of multiple output members one or more output members having priority

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Servomotors (AREA)
  • Multiple-Way Valves (AREA)
  • Pens And Brushes (AREA)
  • Forging (AREA)
  • Check Valves (AREA)

Abstract

Means designed as a valve housing (1) for distributing the flow of hydraulic oil generated from a unit (P) to a first (5:1) and a second (5:2a-5:2d) consumer with different priorities, comprising inlet (2) to the first consumer (5:1) and the second consumer (5:2a-5:2d) control valves (6a-d) and an outlet (3) in connection with a hydraulic tank (T). It comprises a housing (1) containing a means of priority (7) arranged between the first consumer (5:1) and the second consumer (5:2a-5:2d) control valve (6a-d), a means (18) in the second consumer (5:2a-5:2d) control valve (6a-d) for delivering a signal flow to the means of priority (7) via a passage (11) arranged in the housing, regulator (8) for regulating the flow to the first consumer (5:1) and the second consumer (5:2a-5:2d) control valve (6a-d) on the basis of the signal flow and a means (14, 16) of attaining a drop in pressure of the signal flow when operating the second consumer (5:2a-5:2d) control valve (6a-d).

Description

Support leg valve
Technical field
The present invention relates to a kind of hydrovalve that has integrated sequence valve, especially relate to the support leg valve on a kind of vapour dress formula timber cranes, preamble as claimed in claim 1 is described.
Background technique
When utilization is installed in timber cranes on the truck and loads timber, to prepare to load by a pair of supporting leg to the ground that is positioned at cargo hold one side of loweing, supporting leg is extending or shrink so that obtain the horizontal position of cargo hold.Supporting leg is used for stablizing chassis portion, and this chassis comprises cargo hold, as truck or its trailer.If unstable, chassis portion may tilt by the load direction in hoist, slackens the control of loading process, causes the operating time lengthening.The in a short time use of valve before manipulating crane of control supporting leg motion.And supporting leg must be stable at its lowered position.Existing hydraulic system becomes to comprise to have the valve of the excessive costliness of complicated hose setting, or comprises the unnecessary motion of supporting leg.It is described below that to be some be equipped with the system that the most general operation supporting leg that uses on the truck of timber cranes is used.
Existing hydraulic system is generally one or two quantitative hydraulic pump or a bigger variable displacement pump.With regard to metering pump, support leg valve usually and cock be connected in series, support leg valve comprises the valve that a meta is opened, support leg valve is in the initial position of cascaded structure.This means the flowing at first of hydraulic oil of the function flow of hoist by support leg valve, so supporting leg pressurized always.
Support leg valve also can be in parallel with cock by an independent sequence valve.In this case, support leg valve is the valve that a kind of meta is closed, and this valve is provided with an external pilot pipeline, and by this pipeline, pilot pressure enters regulates the sequence valve that flows.Another modification is by the external pilot pipeline that support leg valve is in parallel with cock, and this pipeline has the load induction pressure.Pilot line is provided with a safety check, guiding load induction pressure from support leg valve to the diverter valve that is arranged on the cock.In this case, support leg valve also is the valve that a kind of meta is closed.For the purpose of wanting to reach, the flexible pipe setting that these two kinds of connections all comprise relatively costly setting and need relative complex.
Another method that solves the problem that occurs simultaneously with support leg functions is to use variable displacement pump and switch valve these valves in parallel by being controlled by the driver.At this moment, normally a kind of meta of support leg valve load Inductance valve of closing.A shortcoming is, during manipulating crane, the valve of control supporting leg always is under the pressure, because the intrinsic leakage of guiding valve inside, and may cause the unnecessary motion of supporting leg.This problem can solve by independent sequence valve is installed in system, and this system is provided with the delivery outlet of linking support leg valve and the mouth of linking cock.Sequence valve is controlled by the signal from support leg valve, and this sends from support leg valve by pilot line usually and is guided to sequence valve earlier and realizes.With respect to the simple functions of support leg valve, this solution also needs to have relative complex and relatively costly valve.Advantage by independent sequence valve these valves in parallel is that in cock work, supporting leg on every side is not under the pressure.The pressure drop of valve both sides also reduces.Yet, still exist to have the expensive and complicated defective of valve that extra flexible pipe is provided with.In addition, according to the type of the pump that uses, need special connection operation.
Summary of the invention
An object of the present invention is to realize a kind of valve, this valve is mainly used in the supporting leg that operation is installed in the timber cranes on the truck, and with motion simple and inexpensive manner control example such as operator cabin or log vehicle, and do not need complicated flexible pipe setting or additional valve.Another purpose is described setting can be used with volume adjustable hydraulic pump or quantitative hydraulic pump.
These purposes are to realize by such support leg valve, and this support leg valve comprises the control valve that the single-piece unit that is provided with integrated sequence valve and meta are closed, and this control valve is mobile to the pressure signal regulated fluid of sequence valve by the passage in the housing.
Description of drawings
More fully describe the present invention below with reference to accompanying drawing, accompanying drawing has shown an example of selecting among the embodiment, wherein:
Fig. 1 shown according to the cross section of the valve that is connected with metering pump of the present invention and
Fig. 2 has shown the cross section according to the valve that is connected with variable displacement pump of the present invention.
Embodiment
Referring to accompanying drawing, comprise single-piece valve chest 1 according to valve of the present invention, it is provided with: be connected to quantitatively or the import 2 of volume adjustable hydraulic pump (P); Be connected to the outlet 3 of hydraulic oil container (T); Be connected to the outlet 4 of valve 5:1, this valve is used to control the function of customer such as hoist; And the outlet that is connected to four customer 5:2a-5:2d that have four identical control valve 6a-d in the present embodiment, four control valve 6a-d are used to control supporting leg, vehicle and similar functions.In addition, valve is adapted to pass through several control valves that can link together with valve chest 1, and its function is imposed on for example supporting leg and vehicle.Import 2 is connected with sequence valve 7 in being attached to valve chest 1, and a spring-loading slide block 8 is set in the sequence valve 7, is called priority slide (priorityslide).One end of slide block 8 is provided with first chamber 9, is used to set up the hydraulic pressure from import 2.The other end of slide block is provided with second chamber 10.Second chamber 10 is connected in the load induction pressure by the passage 11 from control valve slide block 6a-d.One spring 12 is set in second chamber 10, disc spring for example, the one end leans against the inside of chamber 12, and the other end leans against on the valve chest.By the power of spring 12, promptly slide block 8 is urged to the first end position towards the direction of arrow A to first chamber 9.
Import 2 links to each other with control valve 6a-d via the passage 13 that has first segment head piece (first restriction) 14 by sequence valve 7.Load induction pressure passage 11 is arranged to be connected with fuel tank T by the passage 15 that has second restriction 16.Slide block in the control valve 6a-d is not equipped with first flow groove 17 that size increases, to open the flow path of linking customer 5-2a-5:2d such as supporting leg in succession.The slide block of control valve 6a-d also is equipped with second flow groove 18, and it links to each other with second chamber 10 in the sequence valve 7.
When system pressurizeed, import 2 was communicated with passage 13.When pump P starts and control valve 6a-6d when not being operated, the flowing from pump P of hydraulic oil through first chamber 9 that import 2 arrives the sequence valves 7, the pressure in the chamber 9 rises thus.The pressure from load induction pressure passage 11 that is present in second chamber 10 enters fuel tank through second restriction 16 simultaneously.When the pressure in first chamber 9 becomes elastic force than second chamber, 10 inner springs when big, priority slide 8 moves to the second end position, and import 2 will be closed with being communicated with of passage 13.Import 2 will link to each other with the mouth 4 that is connected to valve 5:1, this valve control crane functions, whole flux and flow direction crane valve 5:1 of pump thus.
As operation control valve 6a-6d, when promptly valve is controlled the function of customer 5:2a-5:2d such as supporting leg, valve will move, and promptly control valve slide block 6a moves towards the direction of arrow A shown in Figure 1.The flow groove 17 that is arranged on the slide block is opened in succession, and the flowing of hydraulic oil that flows to supporting leg thus increases gradually.At this moment, second flow groove 18 is opened in succession to increase the flow of the passage 11 flow to the induction pressure that is used to load gradually.This means that the pressure in second chamber 10 will rise, priority slide 8 will move to neutral position (centreposition) thus, and the pressure in neutral position passage 13 is equivalent to the total pressure of spring 12 and second chamber, 10 internal pressures.Priority slide 8 is when this position, and customer 5:2a-5:2d is supporting leg in this example, can turn round according to desirable mode with the necessary flow with required pressure independent, and simultaneously, remaining flow arrives cocks 5 by outlet 4.
For the pressure in the passage 11 of the induction pressure that prevents to be used to load directly rises to peak, on second restriction 16, do not put a discharge pipe 19 to fuel tank T during little valve event.Discharge pipe 19 transports from the certain flow of controlling second flow groove 18 among the valve slider 6a-6d to fuel tank T, thereby before this, desirable pressure drop arrives second chamber 10.
Control valve slide block 6a-6d is so that close discharge pipe 19 with big valve event at second restriction 16 in design, thereby first segment head piece 14 has maximum effect as the main flow by passage 13.The size of first segment head piece 14 can be fit to be provided for the greatest limit flow of big valve event.This can be used for providing the steady control of customer 5:2a-5:2d, and does not have any unexpected motion.Pressure drop to one fixed value that priority slide 8 is regulated restriction 14 both sides, irrelevant thereby this peak rate of flow becomes and loads, promptly the supporting leg in this example will be maintained fixed speed, and will be irrelevant with load.
The present invention is not limited in top description and the shown content of accompanying drawing, changes or change with different ways in the framework of the invention thought that the present invention can claims below narrates.

Claims (8)

1, a kind of device that is designed to valve chest (1), this device is used for distributing from the flow of the hydraulic oil an of unit (P) generation to priority different first customer (5:1) and second customer (5:2a-5:2d), described device comprises import (2) of linking first customer (5:1) and second customer (5:2a-5:2d) control valve (6a-d) and the outlet (3) that links to each other with a hydraulic oil container (T), it is characterized in that, it comprises: housing (1), this housing (1) comprises priority device (7), and this priority device (7) is arranged between first customer (5:1) and second customer (5:2a-5:2d) control valve (6a-d); Be located at the device (18) in second customer (5:2a-5:2d) control valve (6a-d), this device (18) is used for transmitting a signal flow to priority device (7) by the passage (11) that is arranged in the housing; Regulator (8) is used for regulating the flow that flows to first customer (5:1) and second customer (5:2a-5:2d) control valve (6a-d) according to signal flow; And device (14,16), when operation second customer (5:2a-5:2d) control valve (6a-d), the pressure drop of this device (14,16) picked up signal stream.
2, device as claimed in claim 1, it is characterized in that, regulator (8) comprises the priority slide that moves, and this priority slide is arranged in the priority device (7), and has first chamber (9) of the flow that is used to receive hydraulic oil and be used for second chamber (10) of received signal stream.
3, device as claimed in claim 2 is characterized in that, second chamber (10) comprise a spring (12), and this spring (12) remains on its first end position with priority slide.
As the described device of claim 2-3, it is characterized in that 4, priority slide is moved to the second end position by the pressure that flows from the hydraulic oil in first chamber (9).
5, the described device of arbitrary as described above claim is characterized in that, device (18) comprises flow groove, and this flow groove is used to transmit signal flow.
6, device as claimed in claim 5 is characterized in that, flow groove is opened the flow path that is connected to second chamber (10) by passage (11) to open in succession, thereby priority slide is moved to a neutral position.
7, the described device of arbitrary as described above claim is characterized in that, the device (14,16) that obtains pressure drop comprises that one first area reduces part, and this first area reduces partly to be arranged on flow groove (18) is connected in the passage (19) of fuel tank (T).
8, device as claimed in claim 7 is characterized in that, device (14,16) comprises that a second area reduces part, and this second area reduces part and is located at the passage (13) that is positioned between sequence valve (7) and the control valve (6a-d).
CNB2004800170115A 2003-06-19 2004-06-16 Support leg valve Expired - Fee Related CN100480517C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE03017779 2003-06-19
SE0301777A SE525355C2 (en) 2003-06-19 2003-06-19 Outriggers valve

Publications (2)

Publication Number Publication Date
CN1809698A true CN1809698A (en) 2006-07-26
CN100480517C CN100480517C (en) 2009-04-22

Family

ID=27607343

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2004800170115A Expired - Fee Related CN100480517C (en) 2003-06-19 2004-06-16 Support leg valve

Country Status (5)

Country Link
EP (1) EP1633987B1 (en)
CN (1) CN100480517C (en)
AT (1) ATE548569T1 (en)
SE (1) SE525355C2 (en)
WO (1) WO2004111467A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3861769D1 (en) * 1987-02-19 1991-03-14 Zahnradfabrik Friedrichshafen HYDRAULIC DEVICE WITH AN ADJUSTABLE PUMP.
CN2224944Y (en) * 1994-01-24 1996-04-17 奉化豪发液压气动有限公司 Hydraulic multi-channel switching valve
IT234141Y1 (en) * 1994-10-05 2000-02-23 Velp Scient Srl CONTROLLED STEAM FLOW DISTILLATION EQUIPMENT
GB9425273D0 (en) * 1994-12-14 1995-02-08 Trinova Ltd Hydraulic control system
IT1292919B1 (en) * 1997-05-13 1999-02-11 Mita Oleodinamica Spa DISTRIBUTOR FOR A CONTROLLED POSITION AND EFFORT HYDRAULIC LIFT FOR TRACTORS AND AGRICULTURAL MACHINES.
CN1274810A (en) * 1999-05-21 2000-11-29 株式会社岛津制作所 Multi-valve device
CN2504157Y (en) * 2001-07-02 2002-08-07 温州市液压件厂 Hydraulic multiroute valve of crane truck

Also Published As

Publication number Publication date
EP1633987B1 (en) 2012-03-07
ATE548569T1 (en) 2012-03-15
CN100480517C (en) 2009-04-22
EP1633987A1 (en) 2006-03-15
SE525355C2 (en) 2005-02-08
SE0301777L (en) 2004-12-20
SE0301777D0 (en) 2003-06-19
WO2004111467A1 (en) 2004-12-23

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