WO2016037689A1 - Vorrichtung zur druckentlastung an hydraulikleitungen - Google Patents
Vorrichtung zur druckentlastung an hydraulikleitungen Download PDFInfo
- Publication number
- WO2016037689A1 WO2016037689A1 PCT/EP2015/001738 EP2015001738W WO2016037689A1 WO 2016037689 A1 WO2016037689 A1 WO 2016037689A1 EP 2015001738 W EP2015001738 W EP 2015001738W WO 2016037689 A1 WO2016037689 A1 WO 2016037689A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- actuating
- check valve
- accumulator
- actuating rod
- Prior art date
Links
- 238000010168 coupling process Methods 0.000 claims abstract description 13
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 239000003921 oil Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- RZTAMFZIAATZDJ-UHFFFAOYSA-N felodipine Chemical compound CCOC(=O)C1=C(C)NC(C)=C(C(=O)OC)C1C1=CC=CC(Cl)=C1Cl RZTAMFZIAATZDJ-UHFFFAOYSA-N 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/007—Overload
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/3654—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with energy coupler, e.g. coupler for hydraulic or electric lines, to provide energy to drive(s) mounted on the tool
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2275—Hoses and supports therefor and protection therefor
-
- 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
- F15B13/027—Check 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
- F15B2201/00—Accumulators
- F15B2201/20—Accumulator cushioning means
- F15B2201/21—Accumulator cushioning means using springs
-
- 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
- F15B2201/00—Accumulators
- F15B2201/30—Accumulator separating 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
- F15B2201/00—Accumulators
- F15B2201/30—Accumulator separating means
- F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
-
- 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
- F15B2201/00—Accumulators
- F15B2201/40—Constructional details of accumulators not otherwise provided for
- F15B2201/41—Liquid ports
- F15B2201/411—Liquid ports having valve means
Definitions
- the invention relates to a device for pressure relief to hydraulic lines, especially at coupling points having connecting lines between hydraulically actuated actuators having attachments and these supplying equipment.
- Work implements of various kinds such as those used in construction or in agriculture or forestry, usually have a hydraulic system for supplying different consumers, such as working cylinders, traction drives, steering or braking systems.
- a hydraulic system for supplying different consumers, such as working cylinders, traction drives, steering or braking systems.
- the hydraulic system also attachments with hydraulic energy can be supplied, which can be attached to the relevant work equipment as a working tool for various activities and stored when not in use.
- Such attachments such as digging buckets, grapples or the like, usually have working cylinders as actuators for working movements by supplying pressure medium from the system of the associated working equipment.
- the disposal of the relevant attachment for disuse can be performed easily and safely by disconnecting couplings in depressurized system state. If it comes to a heat effect on the parked attachment, for example, by sunlight At the storage location, the pressure of the hydraulic oil within the system of the parked attachment increases significantly. Temperature increases by a few degrees Kelvin can already lead to an increase in pressure to more than 100 bar. Connecting the usual self-closing couplings for the use of the stored attachment becomes almost impossible at such a pressure level and is associated with a high risk of injury.
- the invention has the object to provide an easy-to-use and compact device available that allows safe pressure relief of a respective hydraulic line.
- the device according to the invention in a control block to which the line to be relieved is connected, a relief valve in the form of a pilot-operated check valve, via which a relief pressure reducing the line pressure can be fed to an accumulator, the check valve by means of a manually movable actuator unlocked is, which is arranged movably on the housing of the pressure accumulator.
- the pressure relief according to the invention not only helps in the pressure relief by temperature increase, but in general, since oil volume must be displaced in the initially completed system when engaging. In addition, the force always acts exactly at the right moment, just when the counterforce occurs through the clutch (not too early and not too late). Characterized in that according to the invention for triggering the pressure relief manually movable actuator on the housing of the pressure accumulator is arranged to be movable and this is part of the actuator, the device can be particularly simple and compact form and produce cost.
- the housing of the memory and the control block can be combined to form a structure in which a direct connection of the fluid space of the pressure accumulator is formed with the discharge outlet of the check valve.
- a minimum of space is required for the device, so that the entire device, including pressure accumulator, without difficulty directly on the attachment mountable or in a running between this and the implement hose assembly can be inserted.
- a pressure accumulator is provided with a housing along a longitudinal axis extending housing, wherein the actuating member is guided in the form of an actuating rod coaxially through the housing to the closing body of the check valve, which is movable by means of the actuating rod against a closing force in the unlocked position ,
- the actuating mechanism is integrated into the pressure accumulator, the device can be realized with a minimum of overall dimensions.
- the actuation direction of the check valve always falls by the corresponding design of the control block with the actuation direction of the clutch together, which allows easy handling, preferably one-handed operation.
- a pressure accumulator is provided in the form of a spring accumulator having an axially movable accumulator piston, which is loaded on its side facing away from the fluid space side by a compression spring and penetrated by the coaxial actuating rod, which extends with its inner end through the fluid inlet of the housing extends to the closing body of the check valve.
- the pressure accumulator can be carried out inexpensively and with small volumes.
- the relief system can also be designed as a gas storage, which may lead to increased requirements regarding the gas tightness.
- an actuating button for manual displacement of the actuating rod can be attached to the outer end of the actuating rod, which projects beyond the outer end of the housing of the memory.
- the structural body formed from the memory block and the storage housing can form a grip part located next to the actuating axis formed by the housing.
- the handle part on the control block can thereby be grasped with one hand and the actuating button can be pressed simultaneously with a finger of the same hand, so that the second hand of the operator is free to carry out the coupling process, for example by inserting a plug-in coupling. perform.
- the gripping part can be arranged between a first connection part having a line connection, which extends in a cantilevered manner next to the storage housing along the actuation axis, and a second line located on the actuation axis.
- Forming connection form a connecting part which extends in a curved shape between the connecting part and the second line connection.
- the spring accumulator whose housing is closed at the end facing away from the fluid space by a closure body on which the storage piston loading compression spring is supported in the form of a coil spring and having an axially extending within the compression spring, tubular extension in which the the closure part by cross-actuating rod is guided axially movable.
- the housing end part thus forms with its extension both the displacement guide for the actuating rod and an inner guide core for the coil spring surrounding the extension.
- Fig. 1 is a perspective oblique view of an embodiment of the inventive device
- Fig. 2 is a symbol view of the hydraulic circuit of the embodiment
- Fig. 3 is a comparison with a practical embodiment in approximately twice the size drawn longitudinal section of the pressure accumulator shown separately embodiment of the embodiment
- Fig. 4 is a perspective view corresponding to Fig. 1 oblique view of a modified embodiment of the device according to the invention.
- the exemplary embodiment of the device according to the invention shown in FIG. 1 has a control block 2 in the form of a cuboid with a rectangular end face 4. At this and at the opposite back there are line connections 6 and 8, which are connected to each other within the control block 2 via a fluid guide 10 (Fig. 2). About the terminals 6 and 8, the device with the hydraulic system of the attachment, not shown, or with the hydraulic system of the supplying, also not shown working equipment connectable.
- the control block 2, which forms a valve block has, in addition to the fluid guide 10, a non-return valve designated by 12 in FIG. This locks with a loaded by a closing spring 14 closing ball 16, the fluid connection between the fluid guide 10 and a discharge outlet 18.
- the spring accumulator 22 has a circular cylindrical storage housing 24, which is closed at the control block 2 associated end 26 to a fluid inlet 20 leading to the fluid inlet 28 which is arranged coaxially to the housing longitudinal axis 46.
- a threaded pin 30 connects, with which the housing 24 is screwed to the end face 4 with the control block 2.
- a direct connection 32 to the discharge outlet 18 of the check valve 12, wherein the discharge outlet 18 passes directly into the inner connection 32 of the threaded pin 30, so that the valve ball 16 for unlocking the check valve 12 via the inner connection 32 for an actuator accessible is.
- the device For triggering a discharge operation by means of a manually movable actuator, the device according to the invention on an actuating rod 38, which is passed to the housing longitudinal axis 40 coaxially, through the storage housing 24, that its actuating end 40 rests against the valve ball 16 of the check valve 12.
- the actuating rod 38 passes through a storage piston 42 adjoining the fluid space 20 and a closure body 44, which closes the storage housing 24 at the end remote from the fluid space 20.
- the closure body 44 has a tubular extension 48 which extends concentrically with the axis 46 in the direction of the opposite end of the housing 26 to approximately 2/3 of the housing length.
- the tubular extension 48 forms the displacement guide for the actuating rod 38, wherein the passage through the closure body 44, a shoulder 50 is formed, which together with a shoulder 52 on which the actuating rod 38 merges into a diameter-tapered end portion 54, an end stop forms, which limits the outward displacement movement of the actuating rod 38 to the position shown in Fig. 3.
- a coil spring 56 surrounding the extension 48 which is supported on the closure body 44 and on the accumulator piston 42, loads it during a working movement in which it receives a relief volume for pressure relief of the system connected to the connections 6, 8 when the check valve 12 is unlocked.
- an operating knob 58 is attached to the outer, over the storage housing 24 projecting end portion 54 of the actuating rod 38 to move the actuating rod 38 such that its operating end 40 the valve ball 16 moves against the force of the closing spring 14 and the Check valve 12 unlocked.
- the actuating rod 38 tapers in its region where it exits the tubular extension 48, stepped.
- the pertinent step-shaped reduction respectively the paragraph thus formed in the actuating rod 38 by a predetermined distance below the lower end of the extension 48, is causing shortly before reaching the mechanical end position of the piston against the mechanical Spring, the actuating pin against the manual force of the operator, due to the said advanced paragraph on the actuating pin, is pushed back, so that the hydraulic working chamber is closed again. Consequently, only the maximum, by the hand force apparent working pressure and not the maximum system pressure can occur in this room. In this way, the maximum design or output pressure of the pressure relief valve can be considerably reduced, which makes operation easier.
- the storage housing 24 is combined on the valve block 2 into a unitary structure, wherein the axis 46 of the storage housing 24 and thus the actuating axis for triggering the pressure relief with the line connection 8 is aligned.
- the building block with the control block 2 forms a grip part 60 on which the connection 6 offset from the actuation axis is located and which can be grasped by the operator for convenient operation of the device.
- a special shaping for the handle part 60 formed by the control block 2 is provided in the modified embodiment shown in FIG. As shown in FIG.
- the connecting part 62 having the connection 6 is formed cantilevered in the direction of the actuation axis next to the actuation axis of the accumulator housing 24, whereby a connecting part 66 is formed between this connection part 62 and the actuation shaft lying on the actuation axis 8 extends in such a curved shape between the connector 62 and pipe connection 8 that the building forms a kind of pistol grip, so that the device can be easily grasped and held by the operator with one hand and pressed with fingers of the same hand, the operation knob 58.
- the spring accumulator 22 has a relatively low, by the
- Coil spring 56 generated bias, so that when unlocked
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Fluid-Pressure Circuits (AREA)
- Check Valves (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Pipe Accessories (AREA)
- Valve Housings (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15757439.3A EP3191717B1 (de) | 2014-09-09 | 2015-08-26 | Vorrichtung zur druckentlastung an hydraulikleitungen |
KR1020177005858A KR102340464B1 (ko) | 2014-09-09 | 2015-08-26 | 유압 라인들에서 압력을 경감시키기 위한 장치 |
JP2017505654A JP6603307B2 (ja) | 2014-09-09 | 2015-08-26 | 油圧配管内の圧力を逃がすための装置 |
US15/329,283 US10458445B2 (en) | 2014-09-09 | 2015-08-26 | Device for relieving pressure in hydraulics lines |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014013495.4A DE102014013495A1 (de) | 2014-09-09 | 2014-09-09 | Vorrichtung zur Druckentlastung an Hydraulikleitungen |
DE102014013495.4 | 2014-09-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016037689A1 true WO2016037689A1 (de) | 2016-03-17 |
Family
ID=54056156
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2015/001738 WO2016037689A1 (de) | 2014-09-09 | 2015-08-26 | Vorrichtung zur druckentlastung an hydraulikleitungen |
Country Status (6)
Country | Link |
---|---|
US (1) | US10458445B2 (de) |
EP (1) | EP3191717B1 (de) |
JP (1) | JP6603307B2 (de) |
KR (1) | KR102340464B1 (de) |
DE (1) | DE102014013495A1 (de) |
WO (1) | WO2016037689A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220402160A1 (en) * | 2021-06-21 | 2022-12-22 | Deere & Company | Saw apparatus with hydraulic tensioning |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050247359A1 (en) * | 2004-05-05 | 2005-11-10 | Hiser Nicholas R | Pressure relieving coupler manifold with internal velocity fuse |
DE202008002686U1 (de) * | 2008-02-26 | 2008-05-08 | Pister Kugelhähne GmbH | Druckausgleichsvorrichtung für geschlossene Hydraulikkreise |
DE102012012843A1 (de) * | 2012-06-20 | 2013-12-24 | Thomas Sauer | Fluidweiche |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE255499C (de) | ||||
US2205632A (en) * | 1936-12-05 | 1940-06-25 | George L Squier Mfg Company | Sugar cane mill |
US2888231A (en) * | 1952-05-27 | 1959-05-26 | Mining Engineering Co Ltd | Roof supports |
US3064687A (en) * | 1958-08-07 | 1962-11-20 | Acf Ind Inc | Combined accumulator-relief valve |
GB1165157A (en) * | 1965-12-16 | 1969-09-24 | Dowty Hydraulic Units Ltd | Hydraulic Apparatus |
US3425574A (en) * | 1967-01-25 | 1969-02-04 | Bucyrus Erie Co | Hydraulic power unit for a doubleacting cylinder |
GB1463296A (en) * | 1973-04-24 | 1977-02-02 | Girling Ltd | Hydraulic flow control valve assemblies |
DD255499A1 (de) * | 1986-10-31 | 1988-04-06 | Werkzeugmasch Forschzent | Ein- oder mehrfachspanneinrichtung mit abgestufter, hydraulischer spannkrafteinstellung |
US4950126A (en) * | 1988-04-05 | 1990-08-21 | Kestrel International, Ltd. | Movie equipment dolly |
DE3928949A1 (de) * | 1989-08-31 | 1991-03-14 | Wagner Gmbh J | Membranpumpe |
US6866059B2 (en) * | 2000-11-29 | 2005-03-15 | William R. Griffin | Reconfigurable clean-in-place air-blow valve |
RU2358175C2 (ru) * | 2004-07-12 | 2009-06-10 | Тифенбах Контрол Системс Гмбх | Отпираемый обратный клапан |
US7448406B1 (en) * | 2005-05-09 | 2008-11-11 | Waite George D | Hydraulic coupler pressure relief tool |
JP4583261B2 (ja) * | 2005-06-30 | 2010-11-17 | 株式会社クボタ | ローダ作業機用アキュームレータ取付構造 |
US8561637B2 (en) * | 2009-09-08 | 2013-10-22 | Girard Equipment, Inc. | Vent valve |
DE102009050833A1 (de) * | 2009-10-19 | 2011-04-21 | Hydac Technology Gmbh | Vorrichtung zum impulsartigen Freigeben einer in einem Speichergehäuse bevorratbaren Fluidmenge |
-
2014
- 2014-09-09 DE DE102014013495.4A patent/DE102014013495A1/de not_active Withdrawn
-
2015
- 2015-08-26 US US15/329,283 patent/US10458445B2/en active Active
- 2015-08-26 JP JP2017505654A patent/JP6603307B2/ja active Active
- 2015-08-26 KR KR1020177005858A patent/KR102340464B1/ko active IP Right Grant
- 2015-08-26 EP EP15757439.3A patent/EP3191717B1/de active Active
- 2015-08-26 WO PCT/EP2015/001738 patent/WO2016037689A1/de active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050247359A1 (en) * | 2004-05-05 | 2005-11-10 | Hiser Nicholas R | Pressure relieving coupler manifold with internal velocity fuse |
DE202008002686U1 (de) * | 2008-02-26 | 2008-05-08 | Pister Kugelhähne GmbH | Druckausgleichsvorrichtung für geschlossene Hydraulikkreise |
DE102012012843A1 (de) * | 2012-06-20 | 2013-12-24 | Thomas Sauer | Fluidweiche |
Also Published As
Publication number | Publication date |
---|---|
JP2017533383A (ja) | 2017-11-09 |
KR20170048384A (ko) | 2017-05-08 |
EP3191717A1 (de) | 2017-07-19 |
EP3191717B1 (de) | 2020-08-12 |
US10458445B2 (en) | 2019-10-29 |
KR102340464B1 (ko) | 2021-12-21 |
US20170227027A1 (en) | 2017-08-10 |
JP6603307B2 (ja) | 2019-11-06 |
DE102014013495A1 (de) | 2016-03-10 |
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