EP1864024A1 - Lockable working cylinder - Google Patents
Lockable working cylinderInfo
- Publication number
- EP1864024A1 EP1864024A1 EP06723716A EP06723716A EP1864024A1 EP 1864024 A1 EP1864024 A1 EP 1864024A1 EP 06723716 A EP06723716 A EP 06723716A EP 06723716 A EP06723716 A EP 06723716A EP 1864024 A1 EP1864024 A1 EP 1864024A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure chamber
- working cylinder
- cylinder according
- spindle
- piston
- 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
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000007704 transition Effects 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
- F15B15/261—Locking mechanisms using positive interengagement, e.g. balls and grooves, for locking in the end positions
Definitions
- the invention relates to a lockable power cylinder having a housing and a movable therein in a main pressure chamber piston from which a piston rod tube leads from the main pressure chamber, wherein in the piston or the piston rod tube rotates a spindle which is associated with a means for stopping the rotational movement.
- Such cylinders are known in a variety of forms and designs and on the market.
- a fluid-operated working cylinder is shown in which engages a rotatable spindle in a piston rod tube. If the corresponding piston, the Assigned to the piston rod tube, the spindle also rotates, so that the piston rod tube can move axially.
- DE 297 20 838 U1 proposes a braking surface which presses against a brake cone, so that the spindle rotation is braked thereby.
- a braking device is not suitable for braking larger loads acting on the working cylinder. Furthermore, as a result, the spindle rotation can not be stopped abruptly.
- a locking unit is also known from DE 202 16 197, which forms a functionally reliable, fine-stepped and reliably lockable component arrangement.
- a rotational movement of the threaded spindle by means of an axially displaceable connecting member and a non-rotatable counter-member braking locking unit is provided, wherein the means of a
- Compression spring held in the connecting position connecting member can be unlocked by a displaceable against the spring action thrust body.
- Threaded spindle axially displaceable locking piston formed on its front side facing the end of the cylinder bottom end face an annular extending and engageable on a bottom-side counter teeth toothing profile is provided. Coaxial with this is the displaceable on the Tragansatzteil locking piston by means of a central
- Object of the present invention is to provide a working cylinder of the type mentioned above, in which when you release the pressure in the main pressure chamber, there is a very rapid and secure locking of the piston or the piston rod tube or the spindle.
- the spindle or one of these mounted rotating sleeve has a radially arranged pressure chamber, in which a radially feasible locking pin engages.
- This radially feasible locking bolt ensures that, as long as it enters the pressure chamber, a secure locking of the spindle takes place. As a result, the piston and the piston rod tube is set. Another rotational movement is only possible when the locking pin is removed from its rest position.
- spindle also includes a mounted on the spindle rotary sleeve, which serves to better mounting and storage of the spindle.
- the pressure chamber is under the pressure of a pressure medium, which presses the locking pin from the pressure chamber.
- the pressure chamber could be associated with the locking bolt, a force storage device, such as a coil spring. If the pressure in the pressure chamber is removed in this case, the locking pin can retract under the pressure of the compression spring in this pressure chamber and lock the spindle.
- a cup-shaped locking pressure chamber is set up around the spindle end, from which then the pressure chamber, which receives the locking pin, branches off. From this cup-shaped locking pressure chamber enters a pressure medium in the pressure chamber, since there the locking pin is performed with play. If the bottom of the room is funnel-shaped, so the pressure medium can pass in front of the locking pin and push it out of the pressure chamber. The funnel-shaped training does not have to be.
- the latter arrangement is desirable when a plurality of pressure chambers are provided radially distributed around the spindle or the spindle end.
- This radial distribution causes the locking pin to have a variety of desired capabilities to retract into the next compression space.
- the unwanted rotation of the spindle which follows, for example, a leak in the system is reduced to a minimum.
- annular collar On the spindle or the above-mentioned rotating sleeve, an annular collar should preferably be provided, which is supported against at least one needle bearing.
- This needle bearing absorbs the forces acting axially, preferably a Spind.elend Formation still maintains a slight distance from a blind hole bottom of a blind hole around them.
- the entire pressure medium system is coupled together. This means above all that the pressure medium supply is coupled to the movement of the actual piston with the pressure medium supply to the above-mentioned locking pressure chamber for the locking pin.
- the pressure medium supply to the locking pressure chamber and the main pressure chamber is controlled, however. It is important that the locking pressure chamber is separated from the main pressure chamber by a corresponding seal.
- the pressure medium supply to the main pressure chamber is designed so that only the pressure medium supply to the locking pressure chamber reaches a predetermined value, for example from 15 to 25 bar, which is sufficient that the locking pin is pushed out of the pressure chamber before the piston is pressurized in the main pressure chamber , This means that the spindle is first released before it is moved axially in the working cylinder.
- the locking pin takes over a second mechanical backup, while the first backup is done hydraulically by at least one load-holding valve.
- This load-holding valve is arranged in the pressure medium system so that it can hold a force acting on the piston rod or the piston force as soon as the pressure medium supply, for example, the hydraulic unit, is turned off.
- the second, mechanical fuse Only when this first backup stops working, for example, in the case of a faulty load-holding valve or leakage in the system, the second, mechanical fuse enters into force, since in this case the spindle rotates and the locking pin under the pressure of him supporting coil spring in the pressure chamber retracts.
- the present working cylinder is intended primarily for heavy load. The scope is extremely diverse. He goes from, for example, double-deck car transporters, in which individual floors are supported against each other, up to hydraulic presses or devices for the position of formwork in construction. These are only a few application examples, the invention is of course not limited thereto.
- Figure 1 is a plan view of an inventive cylinder
- Figure 2 is a front view of the working cylinder according to Figure 1;
- FIG. 3 shows a cross section through the working cylinder according to line III - III in Figure 2.
- a working cylinder P has a housing 1 on which a distributor block 2 for printing media is placed.
- a tab 3 On the right side of the housing 1 is a tab 3 with an eye 4 for
- To the tab 3 includes a lower housing part 8, to which a middle part 9 is pushed. This in turn goes into a cylinder tube 10, in the opening 11, a guide sleeve 12 is inserted.
- the guide sleeve 12 encloses a piston rod tube 13, which is screwed into a piston 14.
- the piston 14 is guided in the interior of the cylinder tube 10 and is supported against this cylinder tube 10 by means of a sealing ring 15.
- a threaded piece 16 is screwed, which in one piece in a further tab 17 with a Connection eye 18 for example, a load or snap hook transitions.
- the piston rod tube 13 is at least for the most part provided with an internal thread not shown in detail, in which a spindle 20 rotates with a corresponding external thread.
- This spindle 20 also passes through the piston 14 and sits with a spindle root 21 in a rotary sleeve 22, which is received by the middle part 9 and the lower housing part 8.
- the lower housing part 8 forms a blind hole 23, in which the rotary sleeve 22 is received at a distance.
- the rotary sleeve 22 holds with an end face 24 of a blind hole bottom 25 a slight distance.
- the rotary sleeve 22 engages with an annular collar 26 in an annular space 27, which is formed between the middle part 9 and the lower housing part 8.
- annular space 27 the annular collar 26 is supported on both sides in each case via a needle bearing 29 or 30 against corresponding shoulder or end surfaces formed by the housing parts.
- At least two pressure chambers 31.1 and 31.2 are formed, which are each provided with a funnel-shaped bottom 32.
- a locking pin 33 In the pressure chamber 31.1 sits a locking pin 33, which is acted upon by a coil spring 34 on the other hand.
- the operation of the inventive working cylinder is the following: Via a pressure line not shown in detail, pressure medium is supplied through the distributor block 2 to the locking pressure chamber 38. Since the locking pin 33 is guided in the pressure chamber 31.1 with play, this pressure medium passes in front of the locking pin 33 in the hopper bottom 23 and pushes the locking pin 33 against the force of the coil spring 34 from the pressure chamber 31.1. Thereby, the rotary sleeve 22 can rotate freely in the blind hole 23, wherein the rotation is supported by the needle bearings 29 and 30.
- Locking pin 33 is pressed out of the pressure chamber 31.1, pressure medium also passes behind the piston 14. This is moved to the left, so a
- Pressure chamber 36 is reduced in front of the piston 14. The volume
- Pressure medium from this pressure chamber 36 passes through a return line 37 back to, for example, a pressure medium reservoir.
- the spindle 20 is selected so that upon displacement of the piston rod tube 13 under the pressure of the piston 14 to the left, the spindle 20 is set in rotary motion.
- the hydraulic system is controlled so that there is always in the locking pressure chamber 38 by 15 to 25 bar higher pressure, as in the main pressure chamber 36. This ensures that the locking pin 33 remains in its pushed-back position ,
- This load-holding valve is the first safety device of the lockable working cylinder according to the invention.
- the second fuse is taken over by the locking pin 33. This is because the locking pressure chamber 38 is depressurized, the circumference of the rotary sleeve 22 at.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Fluid-Damping Devices (AREA)
- Vehicle Body Suspensions (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL06723716T PL1864024T3 (en) | 2005-03-31 | 2006-03-24 | Lockable working cylinder |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005015059A DE102005015059A1 (en) | 2005-03-31 | 2005-03-31 | Lockable working cylinder |
PCT/EP2006/002737 WO2006103031A1 (en) | 2005-03-31 | 2006-03-24 | Lockable working cylinder |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1864024A1 true EP1864024A1 (en) | 2007-12-12 |
EP1864024B1 EP1864024B1 (en) | 2008-10-22 |
Family
ID=36636490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06723716A Active EP1864024B1 (en) | 2005-03-31 | 2006-03-24 | Lockable working cylinder |
Country Status (10)
Country | Link |
---|---|
US (1) | US20080190282A1 (en) |
EP (1) | EP1864024B1 (en) |
JP (1) | JP2008534874A (en) |
CN (1) | CN101151467A (en) |
AT (1) | ATE412121T1 (en) |
DE (2) | DE102005015059A1 (en) |
ES (1) | ES2316057T3 (en) |
PL (1) | PL1864024T3 (en) |
PT (1) | PT1864024E (en) |
WO (1) | WO2006103031A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006046248A1 (en) * | 2006-09-28 | 2008-04-10 | Aros Hydraulik Gmbh | Lockable working cylinder |
CN106194885A (en) * | 2016-08-31 | 2016-12-07 | 徐州徐工挖掘机械有限公司 | A kind of multiaction power multi-speed oil cylinder |
DE102016119251A1 (en) | 2016-10-10 | 2018-04-12 | Fbr Facondrehteile Gmbh | Hydromechanical locking cylinder and hydraulic control system for its operation |
DE102022000062A1 (en) | 2022-01-07 | 2023-07-13 | Hydac Systems & Services Gmbh | locking device |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2804054A (en) * | 1954-09-13 | 1957-08-27 | Gen Motors Corp | Actuator and locking means therefor |
US2815005A (en) * | 1955-12-12 | 1957-12-03 | Gen Motors Corp | Fluid pressure actuator with stroke end locking means |
US3104593A (en) * | 1960-12-28 | 1963-09-24 | Regent Jack Mfg Co Inc | Fluid actuators |
JPS545179A (en) * | 1977-06-15 | 1979-01-16 | Toyo Kohan Co Ltd | Air cylinder providing with brake |
FR2534985A3 (en) * | 1982-10-23 | 1984-04-27 | Messerschmitt Boelkow Blohm | Jack with improved locking |
JPS62174104A (en) * | 1986-01-29 | 1987-07-30 | 旭化成株式会社 | Manufacture of composite board |
DE4141460C2 (en) | 1991-12-12 | 1993-12-02 | Mannesmann Ag | Pressurized cylinder |
DE29720838U1 (en) | 1997-11-25 | 1998-02-26 | Andexser, Lucie, 32584 Löhne | Working cylinder with integrated lifting brake |
AT4094U1 (en) | 1999-12-07 | 2001-01-25 | Weber Hydraulik Gmbh | LINEAR ACTUATOR |
DE20216197U1 (en) | 2002-10-22 | 2004-03-04 | Bümach Engineering International B.V. | Hydraulic working cylinder |
DE20216297U1 (en) * | 2002-10-23 | 2003-01-09 | Rheinzink Gmbh | Heliothermal flat collector module in sandwich construction |
EP1658443A1 (en) * | 2003-08-19 | 2006-05-24 | Supraventures Ag | Actuator |
-
2005
- 2005-03-31 DE DE102005015059A patent/DE102005015059A1/en not_active Withdrawn
-
2006
- 2006-03-24 WO PCT/EP2006/002737 patent/WO2006103031A1/en not_active Application Discontinuation
- 2006-03-24 JP JP2008503412A patent/JP2008534874A/en active Pending
- 2006-03-24 PT PT06723716T patent/PT1864024E/en unknown
- 2006-03-24 US US11/910,275 patent/US20080190282A1/en not_active Abandoned
- 2006-03-24 DE DE502006001896T patent/DE502006001896D1/en active Active
- 2006-03-24 EP EP06723716A patent/EP1864024B1/en active Active
- 2006-03-24 AT AT06723716T patent/ATE412121T1/en active
- 2006-03-24 PL PL06723716T patent/PL1864024T3/en unknown
- 2006-03-24 ES ES06723716T patent/ES2316057T3/en active Active
- 2006-03-24 CN CNA2006800098662A patent/CN101151467A/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO2006103031A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE502006001896D1 (en) | 2008-12-04 |
JP2008534874A (en) | 2008-08-28 |
WO2006103031A1 (en) | 2006-10-05 |
CN101151467A (en) | 2008-03-26 |
DE102005015059A1 (en) | 2006-10-05 |
PL1864024T3 (en) | 2009-04-30 |
US20080190282A1 (en) | 2008-08-14 |
EP1864024B1 (en) | 2008-10-22 |
PT1864024E (en) | 2009-01-02 |
ATE412121T1 (en) | 2008-11-15 |
ES2316057T3 (en) | 2009-04-01 |
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