EP2411679A1 - Hydraulische ventilvorrichtung - Google Patents
Hydraulische ventilvorrichtungInfo
- Publication number
- EP2411679A1 EP2411679A1 EP10703625A EP10703625A EP2411679A1 EP 2411679 A1 EP2411679 A1 EP 2411679A1 EP 10703625 A EP10703625 A EP 10703625A EP 10703625 A EP10703625 A EP 10703625A EP 2411679 A1 EP2411679 A1 EP 2411679A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connection
- load
- control
- sensing
- valve device
- 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
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
- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0416—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor with means or adapted for load sensing
- F15B13/0417—Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation 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
- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7758—Pilot or servo controlled
- Y10T137/7762—Fluid pressure type
- Y10T137/7764—Choked or throttled pressure type
Definitions
- the invention relates to a hydraulic valve device with a Fluidan- circuit arrangement comprising at least one pressure supply port P, a return port R, a load-sensing connection LS, two control terminals P A 'and PB' and two Nutzan getting A, B and with a movable control device for at least partially controlling of connections of the fluid connection arrangement, wherein the control device is held by two oppositely acting pilot valves controllable and spring-centered in its neutral position.
- EP 1 616 997 AI a hydraulic control arrangement for controlling a hydraulic consumer is known, in particular in the form of a mobile implement, said consumer is connected by means of a continuously adjustable directional control valve arrangement via a flow with a pump and a drain with a tank, wherein a continuously adjustable directional control valve of the directional control valve arrangement opens a circulation channel in a basic position, via which the pump is connected to the tank and in which a circulation pressure balance is arranged.
- a circulation pressure balance is arranged in the control positions of the directional control valve of the circulation channel.
- the directional control valve arrangement has an outlet throttle valve arranged in the outlet, the opening cross section of which is adjustable independently of the activation of the directional control valve, a type of separate drainage groove is formed, which can be controlled independently of the inlet cross section, depending on the present operating conditions ,
- a pressure for biasing the consumer can be set.
- the volume flow can be predetermined via the inlet and then the speed of the consumer can be set by setting the outlet throttle valve.
- a generic hydraulic valve device is known with a pressure sensing device, in which a slider is arranged as a movable control device in a housing bore and movable from a neutral position into two working positions, wherein the slide a central collar portion and two thereof by a respective Slider-annular groove has separate Endbunde and said coils have on the sides facing each other on peripheral portions limited throttle profiles.
- the housing bore has a pressure medium-supplyable pump annular groove, on both sides of each one connectable to a motor line engine annular groove and on both sides outside of each one connectable to the container container annular groove is present.
- the pressure-sensing device has at least one pressure-sensing opening arranged at the circumference of the slider circumference relative to the throttle profiles and connected to a pressure-sensing connection via a connecting channel in the slide, which in the working position of the slide is connected to the pressure-carrying lines to be sensed, but in the neutral position you are separated.
- At least one of the pressure-sensing openings is arranged in the central collar section for determining the inlet pressure in the pump annular groove, wherein a fixed throttle and in the connecting channel within the slide on the outside of the slide between a pressure sensing annular groove and the container annular groove in the housing bore a variable, is provided by the slide position dependent throttle, a smaller dead path of the slider between the neutral position and the working position is possible, resulting in a small-building overall Valve device leads.
- the present invention seeks to provide a hydraulic valve device with which a fine control is possible until it comes to the actual movement of the load, connected at the respective Nutzanschluß comes.
- This object is achieved by a hydraulic valve device having the features of claim 1 in its entirety.
- the control device has, in the form of a control slide, fluid-carrying connection channels which connect the load-sensing and load-signaling connections, which can be assigned to one another in pairs.
- one of the connecting channels is formed as a central channel which is connected to one of the throttle points, wherein the other throttle point opens into an annular channel which is coaxial with the central channel arranged by an inner recess of the spool and an insert sleeve is limited , which is penetrated by the center channel.
- control device is preceded by a pressure compensator, with which the so-called.
- a pressure compensator with which the so-called.
- Mengenabschneidung by a load sensing pressure limitation in the spring chamber of the pressure compensator is possible.
- this function of quantity trimming is not possible or can only be obtained in an expensive manner via corresponding valve add-on constructions.
- the control function of the pressure compensator is improved in that a relatively large discharge cross-section can open into the return connection. In that regard, a so-called. Floating position for the overall arrangement is improved.
- Fig. 1 in the manner of a longitudinal section, a frontal plan view of the essential components of the valve device, but without pilot valves used;
- Fig. 2 in the manner of a longitudinal section a freely sectioned bottom view of the article according to Fig.1;
- Fig. 3 is an enlarged view of the cutting circle X of Figure 2;
- FIG. 1 shows a fluid connection arrangement designated as a whole by 10.
- the dahi next fluid connection assembly 10 has a pressure supply port P, a return port R, a load-sensing connection LS, two control terminals P A 'and P B ' and two Nutzan getting A, B on.
- the aforementioned fluid connections in the direction of the Fig.1 seen from left to right PA ', P, R, PB' and LS and the Nutzan getting A and B are housed in a control housing 12, wherein seen in the direction of the Fig.1 the lower End of the control housing 12 is provided with a per se conventional pressure compensator 14, on the constructive structure so far not discussed in more detail.
- the pressure compensator 14 is connected upstream of the terminals P A ', PB' and controls the control terminals PA ', PB' according to the specification of the applied LS signal in this respect.
- Mengenabschneidung is achieved by a LS-pressure limitation in the so-called spring chamber (not shown) of the pressure balance, with a encouragenabschneidung example, make sense if a steering cylinder connected to the Nutzan say A, B am Stop is and you want to cut off the inflow so far to avoid overloads.
- control device 18 The designated as a whole with 16 control device as such is controlled in a known and therefore not described in more detail manner of conventional pilot valves, the sake of simplicity in the Fig.1 only shown insofar as their respective assignable pilot terminal housing 18,20 addressed are.
- the two pilot valves provide at least for the control device 18 two counteracting control pressures XA and X ß .
- Said control device 16 has a horizontally displaceable in the direction of view of Figure 1 control slide 22, which is shown in Figure 1 in its undeflected middle or neutral position.
- the pertinent neutral position of the spool 22 is supported by two spring memory, which are designed as compression springs 24 and are integrated in a respective assignable spring chamber 26,28 in the assignable pilot port housings 18 and 20 respectively.
- the compression spring 24 has not been shown for the left spring chamber 26.
- the pertinent structure is known in such hydraulic valve devices, so that in this respect will not be discussed here at this point.
- the control device 16 with control slide 22 is provided with load-sensing connections LFA and LFB as well as with load-signaling connections LMA and LMB, which are interconnected in pairs to carry fluid.
- load-sensing terminal LFA connected to the load signaling terminal LMA and the load sensing terminal LFB to the load signaling terminal LMB-
- the said sensing terminals and signaling ports are introduced into the spool 22 in the form of radial transverse bores and, depending on the axial displacement position of the spool 22, the Called Lastfssel- and load message connections in fluid-conducting or blocking connection with the respective assignable terminals of the fluid connection arrangement 10.
- the load sensing and load signaling connections via fluid-carrying connection channels within the spool 22 in a assignable manner in conjunction with each other.
- one of the connecting channels is designed as a central channel 30, which passes through the middle or longitudinal axis of the control spool 22 this completely and opens out at both ends to the outside.
- the pertinent center channel 30 connects in fluid-conveying manner the load-sensing connection LFA with the load-signaling connection LM A.
- an annular channel 32 is provided, the right structural design is particularly apparent from the illustrations of Figures 3 and 4.
- the pertinent annular channel 32 is inserted into an inner recess 34 of the spool 22 in the manner of a radial bore and bounded inwardly by the cylindrical outer periphery of an insert sleeve 36 which forms a part of the central channel 30 as a hollow cylinder. Seen in the direction of FIG. 2, the insert sleeve 36 is supported with its left-hand side on an inserted radial shoulder 38 in the control slide 22.
- a first throttle point dai is introduced in the direction of this on the left side, which engages over the left frontal end of the spool 22 a little way into the central channel 30.
- a second further throttle point dbi is introduced on the opposite side, the embodiment of which is shown in particular in FIGS. 3 and 4.
- the pertinent throttle point dbi is integrated in a screw plug 40, which is screwed via a threaded section 42 in an end-shaped recess of the spool 22.
- the pertinent screw 40 is overlapped by a type of valve disk 44, which under the action of the compression spring 24 as viewed in FIGS. 3 and 4 is seen as such is moved long in the neutral position until the valve plate 44 comes with its outer edge in flush conclusion with the end face of the control housing 12, as shown in Figures 3 and 4.
- Throttle dbi sealed fluid-tight with a stopper 46 In this way, it is ensured that the load-sensing pressure of the load-sensing connection LFA transmitted via the center channel 30 can not reach the second throttle point dbi.
- the throttle point dbi opens via the connecting channel 48 in the form of a cylindrical widening in the spool 22 in the annular channel 32 so that so far a fluid-conducting connection between the load-sensing connection LFB and the load-signaling connection LM ß .
- the control slide 22 moves from its neutral position to a left working position, the load-sensing connection LFA comes into coincidence with the useful connection A and the pressure prevailing there, and can then apply this via the center channel 30 and Load reporting A to the load-sensing terminal LS, also trained in the manner of an annular channel, continue to report, as far as the load-sensing connection LMA enters the LS-ring channel.
- the Lastdimensionallanschluß LFB enters the associated Nutzanschluß B and sensed via the annular channel 32 pressure device via the load signaling connection B in the ring channel with the load-sensing connection LS.
- the pertinent load sensing and signaling chain is then superimposed on the upcoming pilot valve pressure sensor, which is present at the chokes dai or dbi, superimposed.
- Fig.1 shows exclusively, can still see between each inserted pilot valve and the spring chamber 26 and 28 still a third and fourth throttle point da2 or db 2 be introduced.
- throttling point is mentioned in the following, this can be realized via a conventional throttle, but also via a diaphragm.
- the sensor port XA Since in the described state (XB is activated), the sensor port XA is depressurized, the pressurized medium from the load through the LS port in the parallel connected signal line and press from there as a signal flow through the throttles dai and da 2 in the unpressurized Drain connection XA.
- the triggering pressure XB is then counteracted in the spring chamber 26.
- the control slide position is thus determined by the difference between the transmitter pressure XB and the intermediate pressure X ⁇ in the spring chamber 26 in connection XA.
- Loadsensing pressure also acts on the control slide 22 via the above-described signal line and the connected throttles dai and dbi, and the control slide 22 regulates the pressure in the useful connection by means of its position and series connection (pressure divider circuit) of adjustable connection between P and service connection A and of the variable throttle to return connection R.
- the control slide 22 regulates the pressure in the useful connection by means of its position and series connection (pressure divider circuit) of adjustable connection between P and service connection A and of the variable throttle to return connection R.
- the slider 22 is forced out of its fine control range, the throttled pressure rises and the load will move accordingly.
- the variable throttle can be turned off to the return port R, because now the acceleration phase is completed and the constant travel of the load is reached.
- the transmitter pressure XB now specifies how much air flow may be supplied to the consumer, so that the resulting dynamic pressure in A is not exceeded.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Multiple-Way Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200910015384 DE102009015384B3 (de) | 2009-03-27 | 2009-03-27 | Hydraulische Ventilvorrichtung |
| PCT/EP2010/000777 WO2010108570A1 (de) | 2009-03-27 | 2010-02-09 | Hydraulische ventilvorrichtung |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP2411679A1 true EP2411679A1 (de) | 2012-02-01 |
| EP2411679B1 EP2411679B1 (de) | 2013-03-27 |
| EP2411679B8 EP2411679B8 (de) | 2013-05-15 |
Family
ID=42111507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20100703625 Not-in-force EP2411679B8 (de) | 2009-03-27 | 2010-02-09 | Hydraulische ventilvorrichtung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20120006427A1 (de) |
| EP (1) | EP2411679B8 (de) |
| JP (1) | JP2012522188A (de) |
| DE (1) | DE102009015384B3 (de) |
| DK (1) | DK2411679T3 (de) |
| WO (1) | WO2010108570A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016061427A (ja) * | 2014-09-22 | 2016-04-25 | Kyb株式会社 | 切換弁 |
| GB2532152B (en) * | 2016-01-21 | 2017-04-19 | Mooney Katherine | Constructional element |
| US10281934B2 (en) * | 2016-06-16 | 2019-05-07 | Parker-Hannifin Corporation | Hydraulic control valve with controlled flow and valve safety disable |
| CN114439807B (zh) * | 2020-11-04 | 2025-05-23 | 青岛极致创新科技有限公司 | 卸荷阀及组合阀式缓冲油缸 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2050646B (en) * | 1979-06-15 | 1983-04-13 | Sperry Rand Corp | Hydraulic actuator controls |
| US4343152A (en) * | 1980-05-16 | 1982-08-10 | Caterpillar Tractor Co. | Load sensing porting arrangement |
| FR2546576B1 (fr) * | 1983-05-26 | 1987-09-25 | Bennes Marrel | Dispositif limiteur de vitesse, destine a equiper un circuit hydraulique, notamment en equipant le tiroir d'un distributeur hydraulique |
| US4693272A (en) * | 1984-02-13 | 1987-09-15 | Husco International, Inc. | Post pressure compensated unitary hydraulic valve |
| FR2562632B1 (fr) * | 1984-04-18 | 1986-12-12 | Bennes Marrel | Distributeur hydraulique du type proportionnel, avec prise d'informations concernant les plus fortes pressions dans les circuits d'utilisation |
| US4738279A (en) * | 1985-12-17 | 1988-04-19 | Linde Aktiengesellschaft | Multiway valves with load feedback |
| DE3644269A1 (de) * | 1986-12-23 | 1988-07-07 | Rexroth Mannesmann Gmbh | Wegeventil |
| DE8801058U1 (de) * | 1988-01-29 | 1988-03-10 | Danfoss A/S, Nordborg | Hydraulisches Steuerventil mit Druckfühleinrichtung |
| JPH07103882B2 (ja) * | 1989-03-22 | 1995-11-08 | 株式会社小松製作所 | 圧力補償付液圧弁 |
| DE19542371A1 (de) * | 1995-11-14 | 1997-05-15 | Bosch Gmbh Robert | Wegeventilblock |
| US6148856A (en) * | 1998-03-19 | 2000-11-21 | Linde Aktiengesellschaft | Control valve |
| DE102004033891A1 (de) * | 2004-07-13 | 2006-02-16 | Bosch Rexroth Aktiengesellschaft | Hydraulische Steueranordnung |
| EP1619105B1 (de) * | 2004-07-22 | 2007-09-05 | Eaton S.r.l. | Verbrauchsmengesteuerventil für ein hydraulisches System mit Lastmeldung |
-
2009
- 2009-03-27 DE DE200910015384 patent/DE102009015384B3/de not_active Expired - Fee Related
-
2010
- 2010-02-09 DK DK10703625T patent/DK2411679T3/da active
- 2010-02-09 JP JP2012501152A patent/JP2012522188A/ja active Pending
- 2010-02-09 WO PCT/EP2010/000777 patent/WO2010108570A1/de not_active Ceased
- 2010-02-09 US US13/138,593 patent/US20120006427A1/en not_active Abandoned
- 2010-02-09 EP EP20100703625 patent/EP2411679B8/de not_active Not-in-force
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010108570A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2411679B8 (de) | 2013-05-15 |
| WO2010108570A1 (de) | 2010-09-30 |
| US20120006427A1 (en) | 2012-01-12 |
| DK2411679T3 (da) | 2013-04-22 |
| DE102009015384B3 (de) | 2010-09-16 |
| JP2012522188A (ja) | 2012-09-20 |
| EP2411679B1 (de) | 2013-03-27 |
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