CA2433888C - Arrangement at telescopic lifting beams - Google Patents
Arrangement at telescopic lifting beams Download PDFInfo
- Publication number
- CA2433888C CA2433888C CA2433888A CA2433888A CA2433888C CA 2433888 C CA2433888 C CA 2433888C CA 2433888 A CA2433888 A CA 2433888A CA 2433888 A CA2433888 A CA 2433888A CA 2433888 C CA2433888 C CA 2433888C
- Authority
- CA
- Canada
- Prior art keywords
- lifting beam
- telescopic
- lifting
- telescopic tube
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
- B66F3/26—Adaptations or arrangements of pistons
- B66F3/28—Adaptations or arrangements of pistons telescopic
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
- A61G7/1013—Lifting of patients by
- A61G7/1019—Vertical extending columns or mechanisms
-
- 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
- Y10T403/00—Joints and connections
- Y10T403/32—Articulated members
- Y10T403/32254—Lockable at fixed position
- Y10T403/32467—Telescoping members
-
- 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
- Y10T403/00—Joints and connections
- Y10T403/70—Interfitted members
- Y10T403/7075—Interfitted members including discrete retainer
- Y10T403/7077—Interfitted members including discrete retainer for telescoping members
Abstract
Two telescopic lifting beams are loaded in their protruded position and are driven from a retracted position to a protruded position. In order to improve the bending strength of the lifting beams, the lifting beams are surrounded by two telescopic tubes (4, 5), one (4) of the tubes being fixed to the outer end (6) of the telescopic first lifting beam (1) and is slideable on the second telescopic tube (5), which extends inwardly on the second lifting beam (2).
Description
ARRANGEMENT AT TELESCOPIC LIFTING BEAMS
This invention relates to an arrangement at at least two tele-scopically protrudable lifting beams, which are loaded in their protruded position and which are driven in an optional way from a retracted position to a protruded position.
Lifting beams of this type are used, e.g. within the medical service for lifting means, when a person is being lifted from a sitting position to a standing position or from one place to another. Telescopic lifting beams of this kind are also used for other lifting purposes for patients.
The lifting beams are normally loaded in their longitudinal direction and they are designed to meet such a load. The lift-ing beams can be driven hydraulically via gears or manually using rope-driving means or with the help of a crank means.
It has now shown, e.g. within the medical service, that the lifting beams unintentionally have been loaded by bending when the telescopic beams are in their protruded position in rela-tion to each other, which have lead to that the outer lifting beam has been bent in the area where it protrudes out of the outer end of the first lifting beam. The object of the inven-tion is to increase the strength of the lifting beams when they are in their protruded position and that this is accom-plished by simple means, which are cheap. The reinforcement is easy to apply on existing lifting beams without any compli-cated amendments of their design.
In order to reach this object the invention has been given the characteristics, which are stated in the following claims.
This invention relates to an arrangement at at least two tele-scopically protrudable lifting beams, which are loaded in their protruded position and which are driven in an optional way from a retracted position to a protruded position.
Lifting beams of this type are used, e.g. within the medical service for lifting means, when a person is being lifted from a sitting position to a standing position or from one place to another. Telescopic lifting beams of this kind are also used for other lifting purposes for patients.
The lifting beams are normally loaded in their longitudinal direction and they are designed to meet such a load. The lift-ing beams can be driven hydraulically via gears or manually using rope-driving means or with the help of a crank means.
It has now shown, e.g. within the medical service, that the lifting beams unintentionally have been loaded by bending when the telescopic beams are in their protruded position in rela-tion to each other, which have lead to that the outer lifting beam has been bent in the area where it protrudes out of the outer end of the first lifting beam. The object of the inven-tion is to increase the strength of the lifting beams when they are in their protruded position and that this is accom-plished by simple means, which are cheap. The reinforcement is easy to apply on existing lifting beams without any compli-cated amendments of their design.
In order to reach this object the invention has been given the characteristics, which are stated in the following claims.
An embodiment of the invention will now be described by refe-rence to the drawings.
Fig. 1 is hereby a side view, partly in a longitudinal sec-tion, of two telescopic lifting beams in their protruded posi-tion.
Fig. 2 is partly a longitudinal section of the telescopic beams in their retracted position.
Fig. 3 is a longitudinal section of an area depicted by the arrow A in fig . /'_ .
The arrangement shown in fig. 1 and 2 comprises a lifting beam 1, which is telescoping in a second lifting beam 2, being fixed to a driving means 3 which displaces the first lifting beam 1. The driving means 3 can be any known engine as e.g. a hydraulic engine or a gear motor, which drives the lifting beam 1 telescoping in the lifting beam 2. The lifting beams are loaded when the lifting beam 1 is protruding out of the lifting beam 2 in the position shown in fig. 1. The lifting beams 1 and 2 are surrounded by two telescopic tubes 4 and 5, the first telescopic tube being displaceable over the second telescopic tube 5. Fig. 1 shows that the telescopic tubes 4 and 5 are in their most protruded position while fig. 2 shows that the telescopic tube 4 is retracted on the second tele-sCOplC tube 5 over half of the length of the second telescopic tube 5. The first telescopic tube 4 is fixed to the outer end 6 of the first lifting beam 1 by means of a means of an at-tachment 7. The telescopic tube 4 has a first coupling part 8 at its inner end, see fig. 3. The second telescopic tube 5 has a second coupling part 9 at its outer end, see fig. 3. The two coupling parts 8 and 9 work in such a way that when the tele-scopic tube 4 is moving with the telescoping beam 1, the coup-ling part 8 is hitched by the coupling part 9 so that the se-cond telescopic tube 5 follows the first telescopic tube 4.
When the telescopic tube 4 moves in the opposite direction, the coupling part 8 moves away from the coupling part 9 and the second telescopic tube 5 is pushed inwards on the second lifting beam 2 by that the attachment means 7 will abut the outer end 10 of the second telescopic tube, see fig. 3.
AS can be seen from fig. 3 there is a bearing ring 10 attached to the outer end of the second telescopic tube 5. The inner periphery of this bearing ring contacts the outside of the first lifting beam 1 and slides along the lifting beam 1. By this, the outer end of the second telescopic tube 5 is sup-ported by the lifting beam 1. The lifting beam 2 has a bearing tube 11 at its outer end, the second telescopic tube 5 slides on the bearing tube 11. The second telescopic tube 5 has a bearing ring 12 at its inner end, which bearing ring slides with its inner periphery edge on the lifting beam 2. When the second telescopic tube 5 is in its protruded position accor-ding to fig. 1, the telescopic tube 5 is stopped by a stop-ring 13, which is attached to the lifting beam 2. The stop ring may also serve as a guiding means for the second tele-scopic tube 5.
When the arrangement is in the position shown in fig. 1, the second telescopic tube 5 will act as a support for the lifting beam 1 via three points. The first support point is in the area shown by arrow A, the second support point is in the area of the bearing tube 11 and the third support point is at the area of the second bearing ring 12. By this the lifting beam 1 will be reinforced against bending in the area of the tube 11.
Fig. 1 is hereby a side view, partly in a longitudinal sec-tion, of two telescopic lifting beams in their protruded posi-tion.
Fig. 2 is partly a longitudinal section of the telescopic beams in their retracted position.
Fig. 3 is a longitudinal section of an area depicted by the arrow A in fig . /'_ .
The arrangement shown in fig. 1 and 2 comprises a lifting beam 1, which is telescoping in a second lifting beam 2, being fixed to a driving means 3 which displaces the first lifting beam 1. The driving means 3 can be any known engine as e.g. a hydraulic engine or a gear motor, which drives the lifting beam 1 telescoping in the lifting beam 2. The lifting beams are loaded when the lifting beam 1 is protruding out of the lifting beam 2 in the position shown in fig. 1. The lifting beams 1 and 2 are surrounded by two telescopic tubes 4 and 5, the first telescopic tube being displaceable over the second telescopic tube 5. Fig. 1 shows that the telescopic tubes 4 and 5 are in their most protruded position while fig. 2 shows that the telescopic tube 4 is retracted on the second tele-sCOplC tube 5 over half of the length of the second telescopic tube 5. The first telescopic tube 4 is fixed to the outer end 6 of the first lifting beam 1 by means of a means of an at-tachment 7. The telescopic tube 4 has a first coupling part 8 at its inner end, see fig. 3. The second telescopic tube 5 has a second coupling part 9 at its outer end, see fig. 3. The two coupling parts 8 and 9 work in such a way that when the tele-scopic tube 4 is moving with the telescoping beam 1, the coup-ling part 8 is hitched by the coupling part 9 so that the se-cond telescopic tube 5 follows the first telescopic tube 4.
When the telescopic tube 4 moves in the opposite direction, the coupling part 8 moves away from the coupling part 9 and the second telescopic tube 5 is pushed inwards on the second lifting beam 2 by that the attachment means 7 will abut the outer end 10 of the second telescopic tube, see fig. 3.
AS can be seen from fig. 3 there is a bearing ring 10 attached to the outer end of the second telescopic tube 5. The inner periphery of this bearing ring contacts the outside of the first lifting beam 1 and slides along the lifting beam 1. By this, the outer end of the second telescopic tube 5 is sup-ported by the lifting beam 1. The lifting beam 2 has a bearing tube 11 at its outer end, the second telescopic tube 5 slides on the bearing tube 11. The second telescopic tube 5 has a bearing ring 12 at its inner end, which bearing ring slides with its inner periphery edge on the lifting beam 2. When the second telescopic tube 5 is in its protruded position accor-ding to fig. 1, the telescopic tube 5 is stopped by a stop-ring 13, which is attached to the lifting beam 2. The stop ring may also serve as a guiding means for the second tele-scopic tube 5.
When the arrangement is in the position shown in fig. 1, the second telescopic tube 5 will act as a support for the lifting beam 1 via three points. The first support point is in the area shown by arrow A, the second support point is in the area of the bearing tube 11 and the third support point is at the area of the second bearing ring 12. By this the lifting beam 1 will be reinforced against bending in the area of the tube 11.
The invention has been described above in connection with two telescopic lifting beams but the same reinforcement means can be arranged for e.g. three telescopic lifting beams. Further, there is a possibility to make the telescopic tube 5 sliding on the lifting beam 2 along its complete length, thus without the second bearing ring 12 and the tube 11, which means that according to fig. 1 the telescopic tube slides with half of its length on the lifting beam 2. Fig. 1 also shows that the length of the first telescopic tube is about half the length of the first lifting beam in its protruded position while the second telescopic tube 5 has a length which corresponds to about half of the length of the second lifting beam 2. The length of the telescopic tubes may of course be arranged to what is needed but the important is that the second telescopic tube is of such a length that it supports the outer lifting beam at a point which is far away from the outer end of the inner lifting beam 2.
Claims (4)
1. Arrangement at at least two telescopic lifting beams, which are loaded in their protruded position and which are driven from retracted to protruded positions with any suitable means, characterized by, that the lifting beams (1, 2) are surrounded by at least two telescopic tubes (4, 5), one of which being attached to the outer end (6) of the first lifting beam (1) and being telescoping on the second telescopic tube (5), which extends inwards over the second lifting beam (2), that there is a first coupling means (8) between the tubes (4, 5) at the inner end of the first telescopic tube (4) and a second coupling means (9) at the outer end of the second tele-scopic tube (5), said coupling means (8, 9) preventing the telescopic tubes (4, 5) to be drawn apart in their protruded position but allows the tubes to be retracted over each other, and that the second telescopic tube (5) has a first support point at its outer end in the form of a ring (10) which slides over the first protrudable lifting beam (1) and bear against the second lifting beam (2) at least at the outer end of the lifting beam (2) and also at its inner end.
2. Arrangement according to claim 1, characterized by, that the support between the second telescopic tube and the second lifting beam is formed by fixed rings (11, 12) or tubes on the second lifting beam (2).
3. Arrangement according to claim 2, characterized by, that the fixed ring (12), which forms a bearing at the inner end of the second telescopic tube (5), also forms a part of a coup-ling, which limits the movement of the tube outwards on the second lifting beam.
4, Arrangement according to claim 1, characterized by, that the first bearing point (at A) of the second telescopic tube (5) is placed on the middle of the first lifting beam (1), when the first lifting beam is in its protruded position, whereby the inner end of the second telescopic tube (5) is at about the middle of the second lifting beam (2).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0101099A SE0101099L (en) | 2001-03-28 | 2001-03-28 | Device for telescopic lifting arms |
| SE0101099-0 | 2001-03-28 | ||
| PCT/SE2002/000317 WO2002079655A1 (en) | 2001-03-28 | 2002-02-22 | Arrangement at telescopic lifting beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2433888A1 CA2433888A1 (en) | 2002-10-10 |
| CA2433888C true CA2433888C (en) | 2010-07-13 |
Family
ID=20283569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2433888A Expired - Fee Related CA2433888C (en) | 2001-03-28 | 2002-02-22 | Arrangement at telescopic lifting beams |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US7165908B2 (en) |
| EP (1) | EP1373741B1 (en) |
| JP (1) | JP2004527702A (en) |
| AT (1) | ATE351987T1 (en) |
| CA (1) | CA2433888C (en) |
| DE (1) | DE60217656T2 (en) |
| SE (1) | SE0101099L (en) |
| WO (1) | WO2002079655A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE529707C2 (en) * | 2007-01-19 | 2007-10-30 | Liko Res & Dev Ab | Lifting device, comprises pair of telescopic lifting arms enclosed by sleeve connected to spring |
| US8388033B2 (en) * | 2009-11-24 | 2013-03-05 | Alltec Lifting Systems Llc | Method and apparatus for hoisting objects using a modular lifting beam |
| GB2541654A (en) * | 2015-08-24 | 2017-03-01 | Heald Tech Ltd | Security barrier apparatus |
| CN111102970A (en) * | 2019-12-25 | 2020-05-05 | 中国电建集团中南勘测设计研究院有限公司 | Lifting invisible observation pier |
| CN111006647A (en) * | 2019-12-25 | 2020-04-14 | 中国电建集团中南勘测设计研究院有限公司 | Lifting type invisible observation pier |
Family Cites Families (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US401061A (en) * | 1889-04-09 | Walking-stick | ||
| US1088743A (en) * | 1912-09-11 | 1914-03-03 | John Swinland | Folding umbrella. |
| US1705625A (en) * | 1926-09-17 | 1929-03-19 | Battle Creek Surgical Supply & | Extensible rod |
| US1839309A (en) * | 1929-09-25 | 1932-01-05 | Gundel Franz | Collapsible umbrella |
| FR801573A (en) * | 1935-02-13 | 1936-08-07 | Hydraulic cylinder with telescoping pistons | |
| US2168188A (en) * | 1935-11-23 | 1939-08-01 | Bernhard Hans | Collapsible umbrella |
| US2245899A (en) * | 1939-07-12 | 1941-06-17 | John A Campbell | Guard arm for protection of passengers in motor vehicles |
| US2565730A (en) * | 1949-04-23 | 1951-08-28 | M O Johnston | Cylinder assembly with movable liner |
| US2613060A (en) * | 1950-02-13 | 1952-10-07 | Claudie R Trahan | Rotary table drive connection |
| US3021016A (en) * | 1959-12-15 | 1962-02-13 | Thew Shovel Co | Outriggers for crawler cranes, shovels, hoes and the like |
| US3338426A (en) * | 1965-09-21 | 1967-08-29 | Grove Mfg Co | Heavy duty truck crane |
| BE754696A (en) * | 1969-08-28 | 1971-01-18 | Walterscheid Kg Jean | TRIPARTITE ARTICULATED TELESCOPIC SHAFT WITH ANTI-ACCIDENT SAFETY DEVICE |
| US3622124A (en) * | 1970-05-18 | 1971-11-23 | Kenneth R Sidles | Hydraulic lift jack |
| US3749430A (en) * | 1970-12-21 | 1973-07-31 | Chance Co Ab | Lock assembly for holding extensible outrigger leg in retracted position |
| US3981514A (en) * | 1973-10-15 | 1976-09-21 | Clark Equipment Company | Outrigger |
| DE2603488C3 (en) * | 1976-01-30 | 1979-02-22 | Dornier System Gmbh, 7990 Friedrichshafen | Telescopically variable-length device, in particular boom support arm or the like, e.g. for remote-controlled devices, in particular for space technology |
| US4172913A (en) * | 1977-09-23 | 1979-10-30 | Ballah Clark A | Artificial Christmas tree structure |
| DE2904072C3 (en) * | 1979-02-03 | 1981-09-03 | Mey, Joachim, 8631 Merlach | Working swivel chair for a doctor in charge |
| US4652024A (en) * | 1986-05-12 | 1987-03-24 | Graco Inc. | Telescoping handle and pressure liquid conduit |
| NL8801617A (en) * | 1988-06-24 | 1990-01-16 | Homar Nv | SUITCASE FRAME. |
| US5084936A (en) * | 1989-07-27 | 1992-02-04 | Airline Industrial Machinery, Inc. | Apparatus for raising and lowering a rotatable platform |
| US5553350A (en) * | 1994-10-12 | 1996-09-10 | Chang; Fu-Jung | Telescopic handle with freely adjustable length |
| DE29501855U1 (en) | 1995-02-06 | 1995-11-30 | Magdt Roland | Multi-extendable, pneumatically operated telescopic tube as an auxiliary device for quickly overcoming great heights, e.g. Facade paints and other applications |
| US5660495A (en) * | 1995-11-02 | 1997-08-26 | Japan Skyrobot Co., Ltd | Locking-unlocking mechanism for telescopic device |
| NL1001767C1 (en) | 1995-11-28 | 1997-05-30 | Kiela Metaalfab B V | Adjustment device |
| US6701578B1 (en) * | 2002-12-12 | 2004-03-09 | Jung-Hui Lu | Telescopic handle for a cleaning implement |
-
2001
- 2001-03-28 SE SE0101099A patent/SE0101099L/en not_active IP Right Cessation
-
2002
- 2002-02-22 EP EP02700936A patent/EP1373741B1/en not_active Expired - Lifetime
- 2002-02-22 CA CA2433888A patent/CA2433888C/en not_active Expired - Fee Related
- 2002-02-22 US US10/450,534 patent/US7165908B2/en not_active Expired - Fee Related
- 2002-02-22 AT AT02700936T patent/ATE351987T1/en not_active IP Right Cessation
- 2002-02-22 DE DE60217656T patent/DE60217656T2/en not_active Expired - Lifetime
- 2002-02-22 JP JP2002578035A patent/JP2004527702A/en active Pending
- 2002-02-22 WO PCT/SE2002/000317 patent/WO2002079655A1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004527702A (en) | 2004-09-09 |
| ATE351987T1 (en) | 2007-02-15 |
| SE0101099D0 (en) | 2001-03-28 |
| SE516855C2 (en) | 2002-03-12 |
| WO2002079655A1 (en) | 2002-10-10 |
| US7165908B2 (en) | 2007-01-23 |
| DE60217656D1 (en) | 2007-03-08 |
| SE0101099L (en) | 2002-03-12 |
| DE60217656T2 (en) | 2007-10-25 |
| EP1373741B1 (en) | 2007-01-17 |
| US20040037616A1 (en) | 2004-02-26 |
| EP1373741A1 (en) | 2004-01-02 |
| CA2433888A1 (en) | 2002-10-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20130222 |