EP1518818A1 - Druckluftbalancer - Google Patents
Druckluftbalancer Download PDFInfo
- Publication number
- EP1518818A1 EP1518818A1 EP04022377A EP04022377A EP1518818A1 EP 1518818 A1 EP1518818 A1 EP 1518818A1 EP 04022377 A EP04022377 A EP 04022377A EP 04022377 A EP04022377 A EP 04022377A EP 1518818 A1 EP1518818 A1 EP 1518818A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- compressed air
- air balancer
- ball screw
- tube
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/18—Power-operated hoists
Definitions
- the invention relates to a Druckbuchbalancer for lifting, holding and lowering a load.
- a Druck Kunststoffbalancer usually has a rotatable cable drum on, slidably disposed along its axis of rotation is.
- a rope By turning the rope drum, a rope is unrolled or rolled up, to which the load to be held hangs.
- the rope drum is arranged in a housing, preferably a Cylinder shell and two front cover covers covers.
- a gasticianbeaufyerter Housed piston which are axially displaced in the housing can.
- the gas pressure on the piston increases, causing the piston to move axially is moved. This leads to a rotation of the cable drum, so that the rope is rolled up.
- the load should be on one Be held high, the gas pressure on the piston and the gravity of the load in a balance of power. Weight Floats or floats on a gas or air cushion. Due to the compressibility of the gas, the load may be out of their Balance position in a certain range from hand to top or be moved down without the gas pressure on the Piston must be readjusted. This facilitates the work when installing and inserting parts in machines as both Hands are free and a balancing of the part to be installed is simply possible.
- the piston forms a boundary in its one Volume variable chamber into which a pressure medium, preferably Air, can be directed.
- a pressure medium preferably Air
- the hanging on the rope Load be kept at a constant level, for example, must also be the axial position of the piston in the housing and thus Also, the volume in the chamber remain constant.
- a volume constancy over a longer period of time requires a leak-free as possible Sealing the chamber. As critical turns out to be the seal between the piston and its treads.
- a compressed air balancer in a cylindrical piston in a hollow cylinder displaceable is arranged. Between the piston and the hollow cylinder a sealing ring or piston ring is provided. To one is possible to realize seal that is as leak free as possible Sealing ring under tension and presses against the tread of the Piston.
- a smooth running of the piston is important to a so-called To keep breakaway torque as small as possible.
- the piston is moved out of a standstill is due to the difference between sliding friction and static friction an extra moment or extra force necessary to set the piston in motion. Too big a breakaway moment precludes a gentle process of the load from standstill and should therefore be avoided as far as possible.
- the invention is therefore based on the object, a To provide compressed air balancers, on the one hand a well-sealed Compressed gas chamber and with a gentle process the hanging on the rope load is possible.
- the outer tread of the piston is defined by the inner surface of the Tube formed, which fitted as an inner sleeve in the cylinder jacket is.
- the tube for example, as a carbon fiber tube, as Ceramic tube or glass tube is formed, preferably has a particularly smooth surface on, allowing the friction between Piston and outer tread or between sealing ring and outer tread is very low. This applies equally to Stiction and sliding friction, thereby also the Difference between sliding and static friction, which is the size of the Losbrechmoments significantly influenced, significantly reduced becomes.
- the concentricity tolerance is of the pipe is less than 0.005 mm. As particularly appropriate it has been proven that the concentricity tolerance is less than 0.001 mm.
- the gasscherbeaufschlagt from an inner side of the piston ring is between the Tube and piston provided at least one outer piston ring, the gasdruckbeaufschlagt from an inner side of the piston ring is.
- the piston ring by means of gas pressure pressed against the pipe.
- the gas pressure used which rests against the piston.
- the stand Pressure with which the piston ring pressed against the carbon fiber tube is, and the pressure in the chamber, by the piston is limited and is to seal as well as possible, in one certain ratio.
- the greater the pressure in the chamber the greater the contact pressure of the piston ring and so that the seal between the piston and carbon fiber tube.
- the ball screw extends between the both side-mounted end covers.
- the ball screw This makes the two end caps easy brace against each other, eliminating the between the end caps arranged cylinder jacket is fixed.
- the extending between the two end caps ball screw also grips through the piston and the chamber.
- an inner piston ring provided from an inner side the piston ring, as with the outer piston ring is possible, gas Kunststoffbeaufschlagt is.
- the inner and / or outer piston ring may be a substantially Have V-shaped ring cross-section.
- the ring cross section includes two angularly disposed legs, each one open end and have an end, in which the two legs converge.
- the open ends are appropriate on side walls a piston groove, while the two converge Leg at the other end to the carbon fiber tube or rest against the ball screw.
- the ball screw comprises a spiral-shaped ball track, being in one area the ball screw, the inner tread of the piston forms, the ball track is not formed.
- the inner one Tread of the piston thus has a smooth cylindrical Face up, leaving a spindle cover between pistons and ball screw for a good seal not necessary is.
- the surface of the ball screw is ground. As a result, a particularly low surface roughness be achieved. Additionally or alternatively, the surface also be rolled.
- a cable guide housing which has a coaxial with the cable drum arranged guide cylinder and at least having a support ring extending in the radial direction from the guide cylinder to the cylinder jacket of the housing extends.
- the cable guide housing that both the cable drum as also the sphere of ball screw, the inner tread of the piston, not by dust or other particles Pollute by a rope outlet of the Druckmaschiners can penetrate into the housing from the outside.
- FIG. 1 shows a compressed air balancer 1 in longitudinal section.
- the Compressed air balancer 1 comprises a cylinder jacket 2 and laterally mounted end cover 3.
- a rotatable and slidable along its axis of rotation drum 4 arranged.
- a ball screw gear consisting of a ball screw 5 and a ball nut 6 is an axial Movement of the piston 7 in a rotation and axial movement the cable drum 4 converted.
- the piston 7 is limited together with that shown in FIG right end cover 3, a carbon fiber tube 8 and a Part of the ball screw 5, a chamber 9, in which a pressure medium, preferably compressed air, can be passed. Will the Chamber 9 is pressurized with compressed air, the piston 7 is axially postponed. He presses against the cable drum 4 by means of a Axial ball bearing 10, which is a relative rotation between pistons 7 and cable drum 4 permits. Because of the interaction the fixed ball screw 5 and the ball nut 6, the rotatably connected to the cable drum 4, turns through the axial displacement of the cable drum around its own axis.
- a pressure medium preferably compressed air
- the carbon fiber tube 8 lies with an outer surface 11 on the cylinder jacket 2 on.
- An inner surface 12 of the carbon fiber tube forms an outer race of the piston 7.
- piston 7 Both on an outer side 14 and on an inner side 15 the piston 7 has annular grooves 17 for receiving piston rings 18, 19 on.
- the cable drum 4 is covered by a cable guide housing 22, which is arranged coaxially to the cable drum 4.
- the cable guide housing 22 has a guide cylinder 23 and at its End-arranged support rings 24, which for its centering in the cylindrical compressed air balancer 1.
- Figure 2 shows the Druck Kunststoffbalancer 1 of Figure 1, where now the piston 7 rests against the right end cover 3. Corresponding now has the cable drum 4 another axial position on. In Figure 2 it can be seen that in the ball screw a spiral ball track 25 is formed, this extends only over part of the ball screw 5.
- Figure 3 shows the Drucklessnessbalancer along the line III-III the figure 1. It can be seen the circular in cross-section Compressed air balancer 1 and the attached bracket 20. Die Holder 20 has a plurality of passage openings 27 for attachment the Druckluftbalancers on a not shown here Suspension on.
- FIG. 4 shows a part of the piston 7 with the piston rings 18, 19.
- the piston rings 18, 19 have a substantially V-shaped Ring cross section on.
- the ring cross-section has two diverging legs 29 on the side walls 30, 31 of the annular grooves 16, 17 abut.
- At the bases 32, 33 of the annular grooves 16, 17 each opens a channel 34, 35, the the annular grooves 16, 17 connects to the chamber 9.
- the piston rings against the corresponding Treads pushes.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
- Transmission Devices (AREA)
Abstract
Description
- Figur 1
- einen Druckluftbalancer im Längsschnitt;
- Figur 2
- den Druckluftbalancer der Figur 1, wobei ein darin verschiebbarer Kolben eine andere Stellung einnimmt;
- Figur 3
- eine Ansicht entlang der Linie III-III der Figur; und
- Figur 4
- den Kolben mit einem Kolbenring im Detail.
- 1
- Druckluftbalancer
- 2
- Zylindermantel
- 3
- Abschlussdeckel
- 4
- Seiltrommel
- 5
- Kugelrollspindel
- 6
- Kugelmutter
- 7
- Kolben
- 8
- Kohlefaserrohr
- 9
- Kammer
- 10
- Axialkugellager
- 11
- Außenfläche
- 12
- Innenfläche
- 13
- Innere Lauffläche
- 14
- Außenseite
- 15
- Innenseite
- 16
- Kolbenringnut
- 17
- Kolbenringnut
- 18
- Kolbenring
- 19
- Kolbenring
- 20
- Halterung
- 21
- Seilaustrittsöffnung
- 22
- Seilführungsgehäuse
- 23
- Führungszylinder
- 24
- Stützring
- 25
- Kugelrollbahn
- 26
- Seil
- 27
- Nut
- 28
- Durchtrittsöffnung
- 29
- Schenkel
- 30
- Seitenwand
- 31
- Seitenwand
- 32
- Grundseite
- 33
- Grundseite
- 34
- Kanal
- 35
- Kanal
Claims (11)
- Druckluftbalancer (1) zum Heben, Halten und Senken einer Last, mitdadurch gekennzeichnet, dass eine äußere Lauffläche des Kolbens (7) durch eine Innenfläche (12) eines Rohrs (8) gebildet wird, das als Innenhülse in den Zylindermantel (2) eingepasst ist.einer drehbaren und entlang ihrer Drehachse verschiebbaren Seiltrommel (4) zum Auf- und Abrollen eines die Last haltenden Seiles,einem Gehäuse, das vorzugsweise einen Zylindermantel (2) und zwei stirnseitige Abschlussdeckel (3) umfasst,einen gasdruckbeaufschlagten Kolben (7), der im Gehäuse axial verschiebbar ist; undeinem Kugelgewindegetriebe, das eine Kugelrollspindel (5) und eine Kugelmutter (6) umfasst und die eine axiale Bewegung des Kolbens (7) in eine Drehbewegung und axiale Bewegung der Seiltrommel (4) umwandelt,
- Druckluftbalancer (1) nach Anspruch 1, dadurch gekennzeichnet, dass das Rohr (8) vorzugsweise als Kohlefaserrohr (8), Glasrohr oder Keramikrohr ausgebildet ist.
- Druckluftbalancer (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Rohr (8) eine Rundlauftoleranz kleiner als 0,005 mm, vorzugsweise kleiner als 0,001 mm aufweist.
- Druckluftbalancer (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass zwischen Rohr (8) und Kolben (7) wenigstens ein äußerer Kolbenring (18) vorgesehen ist, der von einer Innenseite des Kolbenrings (18) gasdruckbeaufschlagt ist.
- Druckluftbalancer (1) einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass sich die Kugelrollspindel (5) zwischen den beiden Abschlussdeckeln (3) erstreckt.
- Druckluftbalancer (1) nach Anspruch 5, dadurch gekennzeichnet, dass zwischen Kolben (7) und Kugelrollspindel (5) wenigstens ein innerer Kolbenring (19) vorgesehen ist, der von eine Innenseite des Kolbenrings (19) gasdruckbeaufschlagt ist.
- Druckluftbalancer (1) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der innere und/oder äußere Kolbenring (18, 19) einen im Wesentlichen V-förmigen Ringquerschnitt aufweist.
- Druckluftbalancer (1) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Kugelrollspindel (5) eine spiralförmige Kugelrollbahn (25) umfasst, wobei in einem Bereich der Kugelrollspindel, der eine innere Lauffläche (13) des Kolbens (7) bildet, die Kugelrollbahn (25) nicht ausgebildet ist.
- Druckluftbalancer (1) nach Anspruch 8, dadurch gekennzeichnet, dass die Oberfläche der inneren Lauffläche (13) geschliffen ist.
- Druckluftbalancer (1) nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass die Oberfläche der inneren Lauffläche (13) gerollt ist.
- Druckluftbalancer (1) nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass ein Seilführungsgehäuse (22) vorgesehen ist, dass einen koaxial zur Seiltrommel (4) angeordneten Führungszylinder (23) und wenigstens einen Stützring (24) aufweist, der sich in radialer Richtung von dem Führungszylinder (23) bis zum Zylindermantel (2) des Gehäuses erstreckt.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10344245 | 2003-09-23 | ||
| DE10344245A DE10344245B4 (de) | 2003-09-23 | 2003-09-23 | Druckluftbalancer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1518818A1 true EP1518818A1 (de) | 2005-03-30 |
| EP1518818B1 EP1518818B1 (de) | 2011-06-01 |
Family
ID=34177922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04022377A Expired - Lifetime EP1518818B1 (de) | 2003-09-23 | 2004-09-21 | Druckluftbalancer |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7134644B2 (de) |
| EP (1) | EP1518818B1 (de) |
| AT (1) | ATE511492T1 (de) |
| DE (1) | DE10344245B4 (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7798472B2 (en) | 2008-01-28 | 2010-09-21 | Tri-Motion Industries, Inc. | Load balancing hoist |
| US8613683B2 (en) * | 2009-04-15 | 2013-12-24 | Srinivas R. Bidare | Pneumato-mechanical regenerative power source |
| US10059573B2 (en) | 2014-05-05 | 2018-08-28 | Tri-Motion Industries, Inc. | Double movable pulley load balancing hoist |
| US10843910B2 (en) | 2017-09-13 | 2020-11-24 | Ingersoll-Rand Industrial U.S., Inc. | Electric powered pneumatic balancer |
| CN112062036B (zh) * | 2019-06-10 | 2022-05-03 | 杭州海康机器人技术有限公司 | 一种举升装置 |
| CN110980568B (zh) * | 2019-12-12 | 2021-07-30 | 浙江兴岛机械股份有限公司 | 一种气动平衡吊气缸机构 |
| CN112429662B (zh) * | 2020-11-05 | 2022-05-31 | 深圳市高捷力科技有限公司 | 一种智能式气动平衡吊 |
| US20240416506A1 (en) * | 2023-06-16 | 2024-12-19 | Contoro Inc. | Remotely actuated rotary actuator with torque multiplication |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1514445A (fr) * | 1967-02-13 | 1968-02-23 | Birfield Eng Ltd | Equilibreur d'outil pouvant être manipulé à la main |
| FR2101211A1 (de) * | 1970-08-04 | 1972-03-31 | Gardner Denver Co | |
| DE2155273A1 (de) * | 1971-11-06 | 1973-05-10 | Opel Adam Ag | Abdichtung fuer den kolben und die pleuelstangenfuehrung in hydraulischen oder pneumatischen arbeitszylindern |
| US4449446A (en) * | 1979-09-10 | 1984-05-22 | United Technologies Corporation | Ballistically tolerant control system |
| DE9417852U1 (de) * | 1994-11-08 | 1994-12-15 | Kuhnke GmbH, 23714 Malente | Kolben-Zylinder-Einheit |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3286989A (en) * | 1965-10-19 | 1966-11-22 | Ingersoll Rand Co | Balancing hoist |
| US3428298A (en) * | 1966-01-03 | 1969-02-18 | Zimmerman D W Mfg | Tool balancer |
| US3481582A (en) * | 1968-01-22 | 1969-12-02 | Ingersoll Rand Co | Reel assembly |
| US3547155A (en) * | 1968-07-30 | 1970-12-15 | Ingersoll Rand Co | Fluid control mechanism |
| US3933388A (en) * | 1974-07-17 | 1976-01-20 | D. W. Zimmerman Mfg. Inc. | Interlock control system for a fluid-operated hoist |
| DE3811110A1 (de) | 1988-03-31 | 1989-10-12 | Fritz Mueller | Kolbenantrieb |
| US5370367A (en) * | 1993-03-12 | 1994-12-06 | Zaguroli, Jr.; James | Safety device for an air balancing hoist |
| EP0988469A1 (de) * | 1998-04-14 | 2000-03-29 | Cabex AG | Längenverstellbare fluidfeder |
| US6578822B2 (en) | 2000-03-17 | 2003-06-17 | Demag Cranes & Components Gmbh | Device for limiting the upper rotation speed of a balancing hoist |
-
2003
- 2003-09-23 DE DE10344245A patent/DE10344245B4/de not_active Expired - Lifetime
-
2004
- 2004-09-21 EP EP04022377A patent/EP1518818B1/de not_active Expired - Lifetime
- 2004-09-21 AT AT04022377T patent/ATE511492T1/de active
- 2004-09-22 US US10/947,081 patent/US7134644B2/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1514445A (fr) * | 1967-02-13 | 1968-02-23 | Birfield Eng Ltd | Equilibreur d'outil pouvant être manipulé à la main |
| FR2101211A1 (de) * | 1970-08-04 | 1972-03-31 | Gardner Denver Co | |
| DE2155273A1 (de) * | 1971-11-06 | 1973-05-10 | Opel Adam Ag | Abdichtung fuer den kolben und die pleuelstangenfuehrung in hydraulischen oder pneumatischen arbeitszylindern |
| US4449446A (en) * | 1979-09-10 | 1984-05-22 | United Technologies Corporation | Ballistically tolerant control system |
| DE9417852U1 (de) * | 1994-11-08 | 1994-12-15 | Kuhnke GmbH, 23714 Malente | Kolben-Zylinder-Einheit |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10344245B4 (de) | 2006-07-06 |
| DE10344245A1 (de) | 2005-05-04 |
| US20050120713A1 (en) | 2005-06-09 |
| EP1518818B1 (de) | 2011-06-01 |
| ATE511492T1 (de) | 2011-06-15 |
| US7134644B2 (en) | 2006-11-14 |
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