WO1996006028A1 - Strut for handling of objects standing on the ground - Google Patents
Strut for handling of objects standing on the ground Download PDFInfo
- Publication number
- WO1996006028A1 WO1996006028A1 PCT/SE1995/000936 SE9500936W WO9606028A1 WO 1996006028 A1 WO1996006028 A1 WO 1996006028A1 SE 9500936 W SE9500936 W SE 9500936W WO 9606028 A1 WO9606028 A1 WO 9606028A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- strut
- cγlinder
- compensation
- container
- piston
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/12—Supports
- B65D90/14—Legs, e.g. detachable
- B65D90/143—Detachable individual legs
Definitions
- the present invention generally relates to an apparatus for handling of objects standing on a support base like on the ground, on a floor, on a transport vehicle platform etc., and the invention is more particularly directed to such an apparatus comprising three, or preferably four, cooperating struts of telescopatable type, b ⁇ means of which said object can be lifted from the ground and put down on a support base located on a higher level, and vice versa, and by means of which the object can also be displaced some distance laterally or longitudinally, or both laterally and longitudinally in connection to lifting or lowering the object.
- Apparatus of the described type are commonly used for handling of containers which are to be loaded onto a transport vehicle, or to be unloaded therefrom, or which are to be lifted for being moved to another place on a ship, in docks etc., but such apparatus preferably also can be used for handling of container flats, for handling of work sheds or for other temporarily set up building bodies or building elements and for many other purposes.
- the invention will, however, in the following be described mainly in connection to handling of containers, for instance for lifting and loading containers onto the platform of a transport vehicle, or lifting of the container from a truck platform and putting same down on the ground after the transport vehicle has been moved off.
- a lifting apparatus of the above mentioned type comprising four cooperating struts of telescopatable type is known for instance from the European patent No 502.833, from the Swedish patent No 369.293, or from the US patent No 4,045,000.
- the cylinder part of each telescopatable strut is fixed connected adjacent the upper and the lower corner boxes of the container.
- the container By expelling the piston parts the container can be lifted from the ground and can thereafter be put down on the platform of a transport vehicle which has been moved into position underneath said container, or it can be lifted from a truck platform and can be lowered and put down on the ground after the truck has been moved off.
- a serious problem in loading of a container onto a truck by means of such apparatus is that the container can normally only be lifted straight up
- SUBSTITUTE SHEET can be lowered straight down, and that the vehicle.
- said vehicle has be backed into an accurate position underneath the lifted container for making it possible to place the container, with the corner boxes thereof, on the locking cones which are provided on the vehicle for this purpose.
- B ⁇ means of such an apparatus there is no possibility of displacing the container laterally, nor longitudinally, so as to adjust the position thereof to fit an obliquely standing vehicle.
- the object of the invention therefore is to solve the problem of providing a strut system for handling of objects standing on a support base and comprising a system of telescopatable struts which carry the object, for instance the container both at the upper and at the lower corner boxes thereof, and in which each strut, at the upper cylinder end thereof, is arranged to be rotatably connected directly in the upper corner box of the container, and in which the lower end of the strut cylinder is arranged to be connected to the lower corner box of the container by means of a link in such a way that said strut automatically adapts itself to the height position of the container, whereby it has been possible to eliminate practically any appearance of bending stresses in the strut when the container is lifted or lowered.
- the apparatus is formed so that the foot of each individual strut can be displaced laterally and/or in the longitudinal direction of the vehicle during the lifting or lowering, respectively, of the load, that is, in the illustrated case, the container.
- the strut cylinder is split in the longitudinal direction and is, adjacent the upper end thereof, formed with a "compensation telescope part" which permits the lower part of the telescopic cylinder together with the link connecting same to the lower corner box of the container to become displaced when the load is lifted, whereby the imaginary line between the strut connection point at the upper corner box and the foot of the strut is maintained substantially straight during any lifting of lowering of the load.
- figure 1 is a perspective view of a system comprising four struts according to the invention, each strut of which is connected to one corner of a load unit, for instance a container.
- Figure 2 diagrammaticall ⁇ illustrates a container strut according the prior art, and the figure illustrates the bending stresses which may appear in the strut when a container is lifted from the position of figure 2a to the position of figure 2b.
- Figure 3 similarly
- SUBSTITUTE SHEET illustrates, diagrammatically, a lifting of a container b ⁇ means of struts according to the invention.
- Figure 4 shows the situation with a maximum lifted load unit.
- Figure 5 shows a detail of the compensation telescopic unit in the situation when the piston rod of the strut is substantially fully withdrawn into the strut cylinder.
- Figure 6 is an analogous view showing the compensation telescopic unit in the situation when the load unit is fully lifted and the piston rod of the strut is almost completely expelled.
- Figure 7 shows the strut with the piston rod completely withdrawn into the cylinder and with the foot removed from the piston, and figure 8 shows a corresponding situation but with the strut fold in to a transport position in relation to the load unit.
- Figure 9 is a sequence showing a method of side displacing a container using the struts according to the invention.
- the apparatus shown in the drawings comprises a strut 1 , which, in a combination of three or preferably four telescopatable struts, is useful for handling of a load unit 2 which can be a container, a container flat, a work shed, a movable house bod ⁇ or an equivalent load unit.
- the struts are intended to lift the load unit from the ground, which position is shown in figure 1 , figure 3a, figure 5 and figure 7 to an elevated position which is shown in figure 3b, figure 4 and figure 6, in which position a vehicle can be moved to a position underneath the elevated load unit and can take over the handling of said load after the load has been lowered b ⁇ means of the struts so that said load unit is standing on the transport vehicle platform.
- Each strut is telescopatable and is formed with a c ⁇ linder part 3 and a piston part 4.
- the telescoping movement which can be made in one direction onl ⁇ , but which is preferabl ⁇ a double acting movement, can be provided mechanically or pneumatically, but it is preferable made hydraulically and is arranged to be made b ⁇ means of an external source of hydraulic pressure.
- each strut can be connected to an available hydraulic system of a transport vehicle.
- connection lug 8 for a rotatabl ⁇ connected link 9 which, with the opposite end thereof, is rotatabl ⁇ connected to the lower corner box 10 of the container.
- the link 9 is of such length and is formed so that the strut, in its mounted condition, extends obliquely downwards-outwards, and
- the c ⁇ linder part 3 is split into two parts in the longitudinal direction, namel ⁇ a lower part which provides a c ⁇ linder chamber part 11 , and an upper part which provides a compensation c ⁇ linder part 12.
- the split place of the two c ⁇ linder parts 11 and 12 is located rather close to the upper end of the c ⁇ linder.
- the compensation c ⁇ linder part 12 is likewise the attachment means for the connection hook 6 which is connected to the upper corner box 7.
- the h ⁇ draulic chamber part 11 acts as a c ⁇ linder for the piston 4 which can be expelled from, or can be retracted into the c ⁇ linder part 11 , respectivel ⁇ , when the pressure piston (not illustrated) is being pressurized b ⁇ the h ⁇ draulic fluid.
- a compensation piston 13 which is mounted thereto, projects upwardi ⁇ , and which piston is housed in the compensation c ⁇ linder part 12.
- the compensation c ⁇ linder part 12 also contains a spring mechanism (not shown), which is connected to said compensation piston 13.
- Said spring mechanism acts with a lifting force on the compensation piston 13 when the piston part 4 has been expelled telescopicall ⁇ some distance out of the h ⁇ draulic chamber 11.
- Said spring mechanism also is connected to a top screw b ⁇ means of which the stroke of the spring can easil ⁇ be adjusted.
- the effective stroke of the spring mechanism is adjusted so that the basic angle ⁇ between the c ⁇ linder and the vertical line through the upper connection point of the c ⁇ linder (see figure 3b) is correctl ⁇ adapted to the height above the ground of the platform of the transport vehicle.
- the h ⁇ draulic actuation of the four struts can be made from an external source of h ⁇ draulic pressure 14 via four conduits 15, each such conduit being connected to one of said struts 1.
- the struts can be pressurized both in common and individuall ⁇ , or two or more in combination. This opens the possibilit ⁇ of displacing the container 2 laterally or longitudinally thereby adapting the position of the container to an eventually obliquely standing transport vehicle, or for putting down an obliquely hanging container on locking cones of an ⁇ optional load plane.
- a stiffly connected cylinder according the prior art t ⁇ pe, can not be lifted without bending stresses appearing in the piston
- the angle between the c ⁇ linder and the vertical line through the upper connection point of the c ⁇ iinder becomes reduced when the container is lifted, in relation to the length of the expelled part of the piston 4.
- said angle for a lifted container is marked the angle ⁇ , which angle is alwa ⁇ s less than the angle ⁇ . It is possible to provide such reduction of the angle ⁇ since the compensation part 12, 13 of the c ⁇ linder 3 is successivel ⁇ being compressed against the action of the inner (not visible) spring mechanism, whereby, concurrentl ⁇ therewith, the lower c ⁇ linder part 1 and thereb ⁇ the outer connection point 8 for the link 9 is elevated. Thereb ⁇ it is possible to eliminate bending stresses in the piston rod 4.
- Figures 1 , 3a, 5, 7 and 8 show the position of the c ⁇ linder 3 with the piston 4 fully retracted into said c ⁇ linder
- figures 3b, 4 and 6 show the position of the c ⁇ linder with fully expelled piston 4. It is evident that the compensation part 12, 13 is substantially fully compressed when the piston 4 is fully expelled.
- All struts 1 are being pressurized at the same time, or stepwise after each other, so that the container 2 is parallel-lifted to a position in which a transport vehicle can be moved to a location underneath the elevated container 2, and the container is put down on the platform of said transport vehicle.
- SUBSTITUTE SHEET struts C-D are lowered the container is rotated down on the load platform about the left corner boxes which are alread ⁇ secured on the load platform, and finally the right corner boxes engage the locking cones of the load platform.
- the container can be placed slightly obliquely, rotated about a longitudinal-horizontal axis by lowering the struts on one side of the container (see figure 9c), whereupon the struts on one side, one strut after the other, can be raised so that the foot 5 is lifted from the ground.
- the struts take the angle ⁇ with the foot 5 a slight distance aside of its original position.
- a further advantage of using the split strut c ⁇ linder 11 , 12 is that the strut can be fold in and be held adjacent the container after the container has been put down on the load platform, whereb ⁇ said struts can follow the container to the place of unloading without the need of removing said struts from the container.
- This is illustrated in figures 7 and 8.
- the foot 5. has been removed.
- the c ⁇ linder part 11 thereb ⁇ can be raised from its position shown in figure 7 and can be rotated past the centre of rotation for the link 9 at the lower corner box 10, whereupon the c ⁇ linder part 11 is let down on the opposite side of said point of rotation, as illustrated in figure 8.
- Figure 9 is a diagrammatical view in a sequence illustrating the method of side displacing a container a slight distance to the left.
- Figures 9a and 9b shows the basic situation from which a side displacement is started. This is made in six successive steps:
- Step 1 Rotate the container 1 about a longitudinal axis b ⁇ lowering the struts A and B in common; see figure 9c;
- Step 2 Raise legs A, B and C a slight distance so that leg D is being unloaded; leg D, which is now "hanging" in the air is expelled down/left depending on its own weight, whereb ⁇ the foot of said leg has been displaced the distance d; see phantom lines of figure 9d:
- Step 3 Raise leg D until said leg D once again supports the container; also raise legs B and C so that leg A is being unloaded; leg A is thereb ⁇ being expelled down/left, like leg D as mentioned under step 2;
- Step 4 Raise leg A until said leg A once again supports the container, displaced the distance d; thereafter raise also legs C and D so that leg B is being unloaded; leg B is thereby contracted by means of the spring mechanism connected to the compensation c ⁇ linder part, whereb ⁇ the foot of leg B is moved up/left; see phantom lines of figure 9e;
- Step 5 Raise leg B until said leg once again supports the container, offset to the left the distance d; also raise legs A and D, whereb ⁇ leg C is being unloaded and is pulled up/left b ⁇ the spring mechanism connected to the compensation c ⁇ linder; Step 6: the entire container now has been side offset the distance d; finally raise legs A and D, as illustrated in figure 9f, so that the container once again takes a vertical/horizontal position.
- connection lug 9 link lower corner box 1 c ⁇ linder chamber part 2 compensation c ⁇ linder part 3 compensation piston source of h ⁇ draulic pressure 5 h ⁇ draulic conduit 6 bending stress (prior art, figure 2) 7 imaginar ⁇ axial line (prior art, figure 2)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR9508679A BR9508679A (en) | 1994-08-25 | 1995-08-22 | Stringer for handling objects parked on the ground |
EP95930076A EP0776304B1 (en) | 1994-08-25 | 1995-08-22 | Strut for handling of objects standing on the ground |
AU33579/95A AU696106B2 (en) | 1994-08-25 | 1995-08-22 | Strut for handling of objects standing on the ground |
DE69524771T DE69524771D1 (en) | 1994-08-25 | 1995-08-22 | SUPPORT FOR HANDLING OBSTACLES |
AT95930076T ATE211107T1 (en) | 1994-08-25 | 1995-08-22 | SUPPORT FOR HANDLING OBJECTS STANDING ON FLOOR |
NO19970506A NO312826B1 (en) | 1994-08-25 | 1997-02-05 | Device for handling objects |
FI970558A FI970558A0 (en) | 1994-08-25 | 1997-02-10 | Aid for the handling of standing objects |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9402852A SE503163C2 (en) | 1994-08-25 | 1994-08-25 | Support for handling objects on the ground |
SE9402852-9 | 1994-08-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996006028A1 true WO1996006028A1 (en) | 1996-02-29 |
Family
ID=20395037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1995/000936 WO1996006028A1 (en) | 1994-08-25 | 1995-08-22 | Strut for handling of objects standing on the ground |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0776304B1 (en) |
CN (1) | CN1058241C (en) |
AT (1) | ATE211107T1 (en) |
AU (1) | AU696106B2 (en) |
BR (1) | BR9508679A (en) |
DE (1) | DE69524771D1 (en) |
FI (1) | FI970558A0 (en) |
NO (1) | NO312826B1 (en) |
SE (1) | SE503163C2 (en) |
WO (1) | WO1996006028A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013034800A2 (en) | 2011-09-06 | 2013-03-14 | Hr-Group Oy | Foot for a container |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105671829B (en) * | 2016-04-06 | 2018-03-30 | 昆山凯洲环保科技有限公司 | Car is padded in dyeing |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1921839A1 (en) * | 1969-04-29 | 1970-11-12 | Gretzschel Dipl Ing Herbert | Support device for containers |
US4045000A (en) * | 1975-09-11 | 1977-08-30 | Firma Josef Haamann, Hebe-Und Transporttechnik | Rack jack |
DE3525259C2 (en) * | 1985-07-16 | 1989-01-19 | Haacon Hebetechnik Gmbh, 6982 Freudenberg, De | |
SE461327B (en) * | 1987-04-10 | 1990-02-05 | Marika Krusell | Transportable lifting equipment for containers |
WO1994018047A1 (en) * | 1993-02-15 | 1994-08-18 | Hans Wilcke | Lifting frame |
-
1994
- 1994-08-25 SE SE9402852A patent/SE503163C2/en not_active IP Right Cessation
-
1995
- 1995-08-22 CN CN95194780.XA patent/CN1058241C/en not_active Expired - Fee Related
- 1995-08-22 AT AT95930076T patent/ATE211107T1/en not_active IP Right Cessation
- 1995-08-22 WO PCT/SE1995/000936 patent/WO1996006028A1/en active IP Right Grant
- 1995-08-22 BR BR9508679A patent/BR9508679A/en not_active IP Right Cessation
- 1995-08-22 DE DE69524771T patent/DE69524771D1/en not_active Expired - Lifetime
- 1995-08-22 AU AU33579/95A patent/AU696106B2/en not_active Ceased
- 1995-08-22 EP EP95930076A patent/EP0776304B1/en not_active Expired - Lifetime
-
1997
- 1997-02-05 NO NO19970506A patent/NO312826B1/en not_active IP Right Cessation
- 1997-02-10 FI FI970558A patent/FI970558A0/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1921839A1 (en) * | 1969-04-29 | 1970-11-12 | Gretzschel Dipl Ing Herbert | Support device for containers |
US4045000A (en) * | 1975-09-11 | 1977-08-30 | Firma Josef Haamann, Hebe-Und Transporttechnik | Rack jack |
DE3525259C2 (en) * | 1985-07-16 | 1989-01-19 | Haacon Hebetechnik Gmbh, 6982 Freudenberg, De | |
SE461327B (en) * | 1987-04-10 | 1990-02-05 | Marika Krusell | Transportable lifting equipment for containers |
WO1994018047A1 (en) * | 1993-02-15 | 1994-08-18 | Hans Wilcke | Lifting frame |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013034800A2 (en) | 2011-09-06 | 2013-03-14 | Hr-Group Oy | Foot for a container |
Also Published As
Publication number | Publication date |
---|---|
SE503163C2 (en) | 1996-04-15 |
NO970506D0 (en) | 1997-02-05 |
SE9402852L (en) | 1996-02-26 |
CN1058241C (en) | 2000-11-08 |
EP0776304B1 (en) | 2001-12-19 |
SE9402852D0 (en) | 1994-08-25 |
AU3357995A (en) | 1996-03-14 |
EP0776304A1 (en) | 1997-06-04 |
FI970558A (en) | 1997-02-10 |
CN1156435A (en) | 1997-08-06 |
FI970558A0 (en) | 1997-02-10 |
DE69524771D1 (en) | 2002-01-31 |
ATE211107T1 (en) | 2002-01-15 |
NO970506L (en) | 1997-02-05 |
NO312826B1 (en) | 2002-07-08 |
BR9508679A (en) | 1997-12-23 |
AU696106B2 (en) | 1998-09-03 |
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