WO2011095672A1 - A device for lifting and lowering - Google Patents

A device for lifting and lowering Download PDF

Info

Publication number
WO2011095672A1
WO2011095672A1 PCT/FI2011/000006 FI2011000006W WO2011095672A1 WO 2011095672 A1 WO2011095672 A1 WO 2011095672A1 FI 2011000006 W FI2011000006 W FI 2011000006W WO 2011095672 A1 WO2011095672 A1 WO 2011095672A1
Authority
WO
WIPO (PCT)
Prior art keywords
lifting
parts
lowering apparatus
pillars
upper frame
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.)
Ceased
Application number
PCT/FI2011/000006
Other languages
French (fr)
Inventor
Veli-Matti Llari Jussila
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN2011800179552A priority Critical patent/CN102869600A/en
Priority to JP2012551653A priority patent/JP2013518785A/en
Priority to US13/577,074 priority patent/US20130014677A1/en
Priority to CA2789182A priority patent/CA2789182A1/en
Priority to EP11739431.2A priority patent/EP2531436A4/en
Publication of WO2011095672A1 publication Critical patent/WO2011095672A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • 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
    • B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
    • B66F3/10—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated with telescopic sleeves

Definitions

  • the invention relates to a lifting/lowering apparatus, such as to a plane that can be lifted, a table or a lifting platform construction, equipped with at least two adjacent lifting mechanism that can be extended telescopically
  • which lifting lowering apparatus comprises a lower frame, further a horizontal upper frame supported by which a plane, such as a working plane is adjusted and comprises a lifting mechanism adjusted between the mentioned lower frame and upper frame with the help of which lifting mechanism the upper frame can be lifted and lowered in relation to the lower frame and that the lifting mechanism comprises adjacent pillars in which case each pillar is formed of cylinder parts that can be moved telescopically in relation to each other which cylinder parts are attached to each other with the help of threads in such a way that the rotation of the parts in relation to each other changes the height of the mentioned pillars.
  • lifting platform constructions are known as lifting lowering apparatuses in which lifting platform constructions a vertical mast is adjusted on top of the base.
  • the lifting platform is being moved supported by the mast at the side of the mast up and down.
  • the mast can additionally be supported at its upper end to the building next to which it is installed.
  • the removal of this kind of lifting platform next to the building to another location is difficult because the supports of the mast must be opened. Often also because of the blocks at the removal line the mast must be dismantled, too.
  • Further lifting platforms, so called articulated platforms attached on top of the base are known which articulated platforms have a lifting apparatus consisting of articulated arms having a articulated form.
  • the disadvantage of these is a fairly high starting height of the platform, or the lowest position that is usually about 2 metres regarding such articulated platforms with which one can reach the height of 8 - 10 metres.
  • the disadvantage of the articulated platforms is also the weight of the articulated mechanism which weight lifts the centre of gravity of the construction fairly high when the platform is being lifted in which case the loading of the platform must be focused mainly only to its centre line.
  • a lifting platform construction according to the above mentioned preamble is known also from a Chinese publication CN 2809309Y.
  • the telescopic parts are made of metal and they are considerably heavy. In order to avoid the excessive increase of the weight, the telescopic parts have diameters that are as small as possible. Due to this the individual pillar or even two parallel pillars consisting of them cannot handle the sideway forces directed to the upper frame at least at their uppermost position.
  • the cylinder parts are made of plastic and in order to improve the receiving of the sideway loadings, the inner diameter of the cylinder part having the smallest diameter is over 200 mm.
  • the advantage of the invention is the fact that the lifting mechanism will need a little space, will be light and will resist the weather. In addition to the lifting mechanism no other constructions conveying power are needed between the lower frame and the upper frame. With the help of the sizing of the cylinder parts belonging to the lifting
  • the lifting mechanism includes only simple parts and the rotating of them. If for example a working platform is being lifted with the lifting mechanism, the platform can easily be made to have a length of several metres, at least over 6 m and to have a width of over 2 m.
  • Figure 1 shows a lifting/lowering apparatus according to the invention as a side view.
  • Figure 2 shows the upper frame of the construction seen from above.
  • Figure 3 shows the construction seen from the end.
  • a lifting platform unit built on top of a towed base 1 equipped with wheels supported by pillars 2, 3, 4 made of plastic material and can be extended telescopically and that are located at a distance L from each other is shown as an example.
  • the upper frame 7 of the lifting platform is supported only by the pillars.
  • the parts 2 - 4 of the pillars are attached to each other with a thread and one implementation form is such that the inner part of each part 2 and 3 is completely full of threads and the outer surface of each part 3 and 4 has threads at least at the lower part.
  • the uppermost rotating part 4 is also a cylinder made of plastic and has an inner diameter that is over 250 mm. With this diameter dimensioning it is ensured that the wall thickness of the cylinder parts 2 - 4 stays moderate, for example under 30 mm and that the cylinder parts 2 - 4 also resist the side forces directed to them.
  • the ratio of the inner diameter d of the cylinder parts 2 - 4 to the height H is most advantageously between 1/2 - 1/4. Lightness can be reached with the help of plastic materials used as base material of the cylinder parts 2 - 4, the density of which plastic materials is 1 ,4 kg/dm3 or under it.
  • the base 1 of the lifting platform is supported by adjustable feet 13 known as such.
  • Parts 3 and 4 are rotated with the help of a rotating motor 9 located at the upper frame 7.
  • a rotating motor 9 located at the upper frame 7.
  • the upper frame 7 rests supported by this flange equipped with bearings in such a way that the part 4 and the flange of its upper part can rotate between the counter-flanges belonging to the upper frame 7.
  • the working platform 5 is advantageously adjusted separately at the both sides of the unit. These platforms 5 can be lifted and lowered in relation to the upper frame 7 with the help of their own lifting motors. It is advantageous for this construction that when the upper frame 7 is lowered to its lowest position, the working platform 5 can be lowered with the help of the lifting apparatuses 16 located at the sides even till the ground surface for loading.
  • the upper frame 7 is shown from above in such a way that the drawing of the rotating motor 9 with the help of belts 11 and 12 moves to both parts 4 through the band pulleys 14.
  • the flanges 10 are the upper, non rotating flanges belonging to the bearing.
  • the rotating is performed only at the uppermost parts 4.
  • the part 3 starts to rotate either with the part 4 or the part 4 rotates by itself.
  • FIG 3 there is a lifting platform construction seen from the end in such a way that the parts 2 and 3 are cut in vertical direction.
  • the part 4 has threads only at the outer surface at its lower part covering the height h.
  • the part 3 has threads at the outer surface only covering the height h.
  • the rotating of the parts 3 and 4 out of the previous part is prevented for example with the finishing of the inner thread part before the edge border of the part.
  • the rotating of the parts 4 can immediately be conveyed to rotate also the parts 3 till the prevention of the rotation for the part 3 occurs or the parts 4 that rotate first, rotate their whole movement distance and then they start to rotate the part 3.
  • Most advantageously all parts 2 - 4 have the same pitch of the thread per the same cycle.
  • the threads are easy to manufacture into parts 2 - 4 when plastic, such as nylon is used as the material of the parts. Trapeze is the most advantageous form of threads.
  • Working platforms that can be moved in vertical direction are arranged downwards from the upper frame 7 at both sides. These platforms are not shown but they are attached to the parts 15 with a some kind of quick attachment method in which case working planes of various lengths and widths can easily be changed to them, if needed. Attaching parts 15 can be moved with the help of the lifting arrangement 16 that comprises motors 18 and conveyor screws 17.
  • the lifting mechanism of the upper frame 7 is a telescopic pillar solution according to the invention, it is possible to easily arrange the described arrangements of the working platforms at the both sides of the pillars.
  • any lifting and lowering platforms or lifting tables can be implemented with the apparatus according to the invention.
  • the plastic material of the parts 2 - 4 is most advantageously polyamide as such or mixed with some known mineral fillers in order to improve the material properties such as in order to reduce friction in the threads or in order to improve weather resistance.
  • the plastic material of the parts can be reinforced with known fibre reinforce- ments, the external surface of the parts can be reinforced with fibres or reinforcement net. Also the surfaces of the threads can be treated or coated with nanotechnology in order to reduce friction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
  • Ladders (AREA)
  • Movable Scaffolding (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

Lifting/lowering apparatus, such as a plane that can be lifted, a table or a lifting platform construction, equipped with at least two adjacent lifting mechanisms that can be extended telescopically which lifting/lowering apparatus comprises a lower frame (1), further a horizontal upper frame (7) supported by which a plane, such as a working plane (5), (6) is adjusted and comprises a lifting mechanism adjusted between the mentioned lower frame and upper frame with the help of which lifting mechanism the upper frame (7) can be lifted and lowered in relation to the lower frame (1) and that the lifting mechanism comprises adjacent pillars (2, 3, 4) in which case each pillar is formed of cylinder parts (2 - 4) that can be moved telescopically in relation to each other which cylinder parts are attached to each other with the help of threads in such a way that the rotation of the parts (2 - 4) in relation to each other changes the height of the mentioned pillars. In order to reduce the construction weight the cylinder parts (2 - 4) are made of plastic and in order to improve the receiving of the sideway loadings the inner diameter of the cylinder part (4) having the smallest diameter is over 200 mm.

Description

A DEVICE FOR LIFTING AND LOWERING
The invention relates to a lifting/lowering apparatus, such as to a plane that can be lifted, a table or a lifting platform construction, equipped with at least two adjacent lifting mechanism that can be extended telescopically which lifting lowering apparatus comprises a lower frame, further a horizontal upper frame supported by which a plane, such as a working plane is adjusted and comprises a lifting mechanism adjusted between the mentioned lower frame and upper frame with the help of which lifting mechanism the upper frame can be lifted and lowered in relation to the lower frame and that the lifting mechanism comprises adjacent pillars in which case each pillar is formed of cylinder parts that can be moved telescopically in relation to each other which cylinder parts are attached to each other with the help of threads in such a way that the rotation of the parts in relation to each other changes the height of the mentioned pillars.
Previously for example lifting platform constructions are known as lifting lowering apparatuses in which lifting platform constructions a vertical mast is adjusted on top of the base. The lifting platform is being moved supported by the mast at the side of the mast up and down. The mast can additionally be supported at its upper end to the building next to which it is installed. The removal of this kind of lifting platform next to the building to another location is difficult because the supports of the mast must be opened. Often also because of the blocks at the removal line the mast must be dismantled, too. Further lifting platforms, so called articulated platforms attached on top of the base are known which articulated platforms have a lifting apparatus consisting of articulated arms having a articulated form. The disadvantage of these is a fairly high starting height of the platform, or the lowest position that is usually about 2 metres regarding such articulated platforms with which one can reach the height of 8 - 10 metres. The disadvantage of the articulated platforms is also the weight of the articulated mechanism which weight lifts the centre of gravity of the construction fairly high when the platform is being lifted in which case the loading of the platform must be focused mainly only to its centre line.
Also working platforms that can be moved supported by the lifting booms are known in which case these working platforms are relatively small lifting cages that can be loaded lightly, for example they are meant only for two persons. The advantage of these compared to the other platforms is the greater moving distance in all sideways, but the disadvantage is the small size of the lifting cage and limited loading capacity and the space required at each time by the lifting booms in sideways and which space is needed in several sideways, too.
Previously a lifting platform construction according to the above mentioned preamble is known also from a Chinese publication CN 2809309Y. In this construction the telescopic parts are made of metal and they are considerably heavy. In order to avoid the excessive increase of the weight, the telescopic parts have diameters that are as small as possible. Due to this the individual pillar or even two parallel pillars consisting of them cannot handle the sideway forces directed to the upper frame at least at their uppermost position.
With the help of a lifting/lowering apparatus according to the invention unexpected improvements can be achieved to the existing prior art and it is characteristic of the invention that in order to reduce the construction weight the cylinder parts are made of plastic and in order to improve the receiving of the sideway loadings, the inner diameter of the cylinder part having the smallest diameter is over 200 mm.
The advantage of the invention is the fact that the lifting mechanism will need a little space, will be light and will resist the weather. In addition to the lifting mechanism no other constructions conveying power are needed between the lower frame and the upper frame. With the help of the sizing of the cylinder parts belonging to the lifting
mechanism, cylinders in question can be made to receive all the vertical and sideway loadings in question. The lifting mechanism includes only simple parts and the rotating of them. If for example a working platform is being lifted with the lifting mechanism, the platform can easily be made to have a length of several metres, at least over 6 m and to have a width of over 2 m.
In the following the invention is described more detailed by referring to the
accompanying drawings in which Figure 1 shows a lifting/lowering apparatus according to the invention as a side view. Figure 2 shows the upper frame of the construction seen from above.
Figure 3 shows the construction seen from the end.
In the figure 1 a lifting platform unit built on top of a towed base 1 equipped with wheels supported by pillars 2, 3, 4 made of plastic material and can be extended telescopically and that are located at a distance L from each other is shown as an example. The upper frame 7 of the lifting platform is supported only by the pillars. The parts 2 - 4 of the pillars are attached to each other with a thread and one implementation form is such that the inner part of each part 2 and 3 is completely full of threads and the outer surface of each part 3 and 4 has threads at least at the lower part. When the lowest parts 2 are attached to the base 1 in a non rotating way, only parts 3 and 4 will be rotated during the lifting and lowering of the upper frame 7. Each thread part has preferably the same pitch per a cycle. The uppermost rotating part 4 is also a cylinder made of plastic and has an inner diameter that is over 250 mm. With this diameter dimensioning it is ensured that the wall thickness of the cylinder parts 2 - 4 stays moderate, for example under 30 mm and that the cylinder parts 2 - 4 also resist the side forces directed to them. The ratio of the inner diameter d of the cylinder parts 2 - 4 to the height H is most advantageously between 1/2 - 1/4. Lightness can be reached with the help of plastic materials used as base material of the cylinder parts 2 - 4, the density of which plastic materials is 1 ,4 kg/dm3 or under it. The base 1 of the lifting platform is supported by adjustable feet 13 known as such. Parts 3 and 4 are rotated with the help of a rotating motor 9 located at the upper frame 7. There is a flange at the upper edge of the parts 4. The upper frame 7 rests supported by this flange equipped with bearings in such a way that the part 4 and the flange of its upper part can rotate between the counter-flanges belonging to the upper frame 7. The working platform 5 is advantageously adjusted separately at the both sides of the unit. These platforms 5 can be lifted and lowered in relation to the upper frame 7 with the help of their own lifting motors. It is advantageous for this construction that when the upper frame 7 is lowered to its lowest position, the working platform 5 can be lowered with the help of the lifting apparatuses 16 located at the sides even till the ground surface for loading. In the figure 2 the upper frame 7 is shown from above in such a way that the drawing of the rotating motor 9 with the help of belts 11 and 12 moves to both parts 4 through the band pulleys 14. The flanges 10 are the upper, non rotating flanges belonging to the bearing. The rotating is performed only at the uppermost parts 4. Also the part 3 starts to rotate either with the part 4 or the part 4 rotates by itself. There are tools 15, 16 at the corners of the upper frame 7 in order to attach the working platform 5 to the sides of the upper frame 7 and in order to move it in vertical direction in relation to the upper frame 7.
In the figure 3 there is a lifting platform construction seen from the end in such a way that the parts 2 and 3 are cut in vertical direction. In the parts 1 and 2 there are threads at the whole inner surface. The part 4 has threads only at the outer surface at its lower part covering the height h. Similarly the part 3 has threads at the outer surface only covering the height h. The rotating of the parts 3 and 4 out of the previous part is prevented for example with the finishing of the inner thread part before the edge border of the part. The rotating of the parts 4 can immediately be conveyed to rotate also the parts 3 till the prevention of the rotation for the part 3 occurs or the parts 4 that rotate first, rotate their whole movement distance and then they start to rotate the part 3. Most advantageously all parts 2 - 4 have the same pitch of the thread per the same cycle. The threads are easy to manufacture into parts 2 - 4 when plastic, such as nylon is used as the material of the parts. Trapeze is the most advantageous form of threads.
Working platforms that can be moved in vertical direction are arranged downwards from the upper frame 7 at both sides. These platforms are not shown but they are attached to the parts 15 with a some kind of quick attachment method in which case working planes of various lengths and widths can easily be changed to them, if needed. Attaching parts 15 can be moved with the help of the lifting arrangement 16 that comprises motors 18 and conveyor screws 17. When the lifting mechanism of the upper frame 7 is a telescopic pillar solution according to the invention, it is possible to easily arrange the described arrangements of the working platforms at the both sides of the pillars.
Although a lifting platform construction realized with the help of two pillars is shown in the figures, it is possible to increase the number of the pillars even to four pieces in which case their diameters can be reduced and in spite of that more stability can be gained. Also the number of the parts 2, 3, 4 is not restricted to three but in the solutions according to the invention there can be more of them.
Although a lifting platform construction functioning with the lifting/lowering apparatus according to the invention is shown in the figures 1 - 3, any lifting and lowering platforms or lifting tables can be implemented with the apparatus according to the invention.
The plastic material of the parts 2 - 4 is most advantageously polyamide as such or mixed with some known mineral fillers in order to improve the material properties such as in order to reduce friction in the threads or in order to improve weather resistance. Further the plastic material of the parts can be reinforced with known fibre reinforce- ments, the external surface of the parts can be reinforced with fibres or reinforcement net. Also the surfaces of the threads can be treated or coated with nanotechnology in order to reduce friction.

Claims

1. Lifting lowering apparatus, such as a plane that can be lifted, a table or a lifting platform construction, equipped with at least two adjacent lifting mechanisms that can be telescopically extended which lifting/lowering apparatus comprises a lower frame (1), further a horizontal upper frame (7) supported by which a plane, such as a working plane (5), (6) is adjusted and comprises a lifting mechanism adjusted between the mentioned lower frame and upper frame with the help of which lifting mechanism the upper frame (7) can be lifted and lowered in relation to the lower frame (1) and that the lifting mechanism comprises adjacent pillars (2, 3, 4) in which case each pillar is formed of cylinder parts (2 - 4) that can be moved telescopically in relation to each other which cylinder parts are attached to each other with the help of threads in such a way that the rotation of the parts (2 - 4) in relation to each other changes the height of the mentioned pillars, characterized in that in order to reduce the construction weight the cylinder parts (2 - 4) are made of plastic and in order to improve the receiving of sideway loadings, the inner diameter (d) of the cylinder part (4) having the smallest diameter is over 200 mm.
2. Lifting/lowering apparatus according to the claim 1, characterized in that the lowermost parts (2) of the pillars are attached to the base (1 ) in a non rotatable way.
3. Lifting/lowering apparatus according to the claim 2, characterized in that the upper frame (7) comprises a rotating motor (9) with the help of which the rotating parts (3, 4) of the pillars can be rotated.
4. Lifting/lowering apparatus according to the claim 1, characterized in that the lower frame (1) comprises a rotating motor (9) with the help of which the lowest, rotating parts (2, 3) of the pillars can be rotated.
5. Lifting lowering apparatus according to the claim 1 , characterized in that wall thicknesses defined on the grounds of allowed loadings are chosen for the parts (2 - 4) of the pillars in which case the parts (2 - 4) of the pillars are meant to receive all allowable vertical and sideway loadings conveyed through the upper frame (7).
6. Lifting/lowering apparatus according to the claim 1, characterized in that the threads of each part (2 - 4) are equipped with a pitch of equal size per a cycle.
7. Lifting/lowering apparatus according to the claim 1, characterized in that the threads of the parts (2 - 4) have a profile equal to trapeze threads.
8. Lifting/lowering apparatus according to the claim 1, characterized in that the parts (2 - 4) are made of polyamide plastic or made of mixed/reinforced polyamide plastic.
9. Lifting/lowering apparatus according to the claim 1, characterized in that the density of the material of the plastic parts (2 - 4) is under 1,4 kg/dm3.
10. Lifting/lowering apparatus according to the claim 1, characterized in that the external surfaces of the parts (2 - 4) are reinforced with fibre or net reinforcements.
PCT/FI2011/000006 2010-02-05 2011-02-04 A device for lifting and lowering Ceased WO2011095672A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN2011800179552A CN102869600A (en) 2010-02-05 2011-02-04 A device for lifting and lowering
JP2012551653A JP2013518785A (en) 2010-02-05 2011-02-04 Lifting device
US13/577,074 US20130014677A1 (en) 2010-02-05 2011-02-04 Device for lifting and lowering
CA2789182A CA2789182A1 (en) 2010-02-05 2011-02-04 A device for lifting and lowering
EP11739431.2A EP2531436A4 (en) 2010-02-05 2011-02-04 LIFTING AND LOWERING DEVICE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20100042A FI20100042L (en) 2010-02-05 2010-02-05 Lifting platform structure
FI20100042 2010-02-05

Publications (1)

Publication Number Publication Date
WO2011095672A1 true WO2011095672A1 (en) 2011-08-11

Family

ID=41727589

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/FI2011/000006 Ceased WO2011095672A1 (en) 2010-02-05 2011-02-04 A device for lifting and lowering
PCT/FI2011/000007 Ceased WO2011095673A2 (en) 2010-02-05 2011-02-04 A telescopically lenghtening/ shortening power unit

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/FI2011/000007 Ceased WO2011095673A2 (en) 2010-02-05 2011-02-04 A telescopically lenghtening/ shortening power unit

Country Status (7)

Country Link
US (2) US20130014677A1 (en)
EP (2) EP2531436A4 (en)
JP (2) JP2013518786A (en)
CN (2) CN102947212A (en)
CA (2) CA2789182A1 (en)
FI (1) FI20100042L (en)
WO (2) WO2011095672A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102659056A (en) * 2012-04-27 2012-09-12 江苏科技大学 Heavy-load high-accuracy lifting device with multiple sections capable of freely extending and retracting
CN102705348A (en) * 2012-05-16 2012-10-03 李莉 Reinforced center shaft of jack
RU2499764C2 (en) * 2011-12-26 2013-11-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования Марийский государственный технический университет Automotive lifting platform
ITTO20130593A1 (en) * 2013-07-15 2015-01-16 Brasola S R L TELESCOPIC SCREW JACKET

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20100042L (en) * 2010-02-05 2011-08-18 Veli-Matti Ilari Jussila Lifting platform structure
CN102390791B (en) * 2011-11-07 2014-04-23 中国重型机械研究院有限公司 Multistage mechanical flexible thruster
KR101223960B1 (en) * 2012-08-06 2013-01-21 주식회사 에이치케이이엔씨 The multistage screw jack
ES2713005T3 (en) * 2013-05-20 2019-05-17 Melchor Gabilondo Sa Hydraulic press
CN104221837A (en) * 2014-09-01 2014-12-24 魏延恕 Horizontal soilless culture system with step motor to drive multi-level barrels to lift
CN104692032A (en) * 2015-01-28 2015-06-10 周正英 Bucket-type elevator device
CN105173796B (en) * 2015-08-07 2018-05-18 苏州美罗升降机械有限公司 Lifting tail gate
CN105460829A (en) * 2016-01-28 2016-04-06 中国科学技术大学 Digital display jack capable of being horizontally moved
WO2017158442A1 (en) * 2016-03-16 2017-09-21 Mohamed Adibur Rahaman SHARIFF Multistage telescopic jack lift assembly
USD902793S1 (en) 2018-04-06 2020-11-24 Rite-Hite Holding Corporation Trailer stand
PL3774409T3 (en) 2018-04-06 2024-05-06 Rite-Hite Holding Corporation Maneuverable ergonomic trailer stands
CN108793028B (en) * 2018-08-31 2019-11-26 温州市南云金属制品有限公司 A kind of finishing uses hoistable platform
CN109823995A (en) * 2019-03-28 2019-05-31 辽宁石油化工大学 A lift suitable for slope ground
CN109921170B (en) * 2019-04-24 2020-04-07 燕山大学 Lifting device adopting real-time movable rigid connecting mechanism
CN209999145U (en) * 2019-05-17 2020-01-31 江井精密工业股份有限公司 Lifting device
CN111170203A (en) * 2019-10-31 2020-05-19 共享智能铸造产业创新中心有限公司 Be applied to 3D printer lifting mechanism and work box connecting device
CN110844824A (en) * 2019-11-15 2020-02-28 合肥森印科技有限公司 N-stage electric telescopic device with large telescopic ratio and application thereof
CN110902617B (en) * 2019-12-12 2021-02-26 苏州中创铝业有限公司 Safe ladder of ascending a height convenient to remove
US11338777B2 (en) 2020-05-26 2022-05-24 Sos Solutions, Inc. Two speed trailer jack
IT202000014344A1 (en) * 2020-06-16 2021-12-16 Coiro Srl FORKLIFT
US11439229B2 (en) * 2020-09-16 2022-09-13 Bridgewater Strategies, LLC Adjustable height workstation
CN114314419B (en) * 2020-10-10 2023-07-18 广东博智林机器人有限公司 Lifting rotary platform
CN112573453B (en) * 2021-02-24 2021-05-28 国网山东省电力公司龙口市供电公司 A lift-type electrical equipment maintenance device
CN115849258A (en) * 2022-11-15 2023-03-28 中铁宝工有限责任公司 Platform equipment for single-rail straddle type operation vehicle and operation vehicle thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5172442A (en) * 1992-01-03 1992-12-22 Stryker Corporation Litter support having telescoping threaded rod arrangement
DE19818821A1 (en) * 1998-04-27 1999-11-04 Dieter Gobbers Lifting device for lifting a load, in particular for lifting a wheelchair
DE19910545C1 (en) 1999-03-09 2000-07-06 Klaus Duchmann Lifting device for raising and lowering load has outer, rotatably located tube with at least three guide and support components distributed on periphery of inside of outer tube and displaced height wise in relation to one another
CN2809309Y (en) 2005-02-22 2006-08-23 朱均琦 Spiral telescopic pole and spiral telescopic device composed thereby

Family Cites Families (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2069012A (en) * 1935-08-06 1937-01-26 Lynes Edwin Ralph Vehicle jack
US2091858A (en) * 1936-09-01 1937-08-31 Logan Gear Company Screw jack
GB673664A (en) 1949-04-16 1952-06-11 Leslie Arthur James Gardner Improvements in laminated tiles for covering floors, walls and similar surfaces
US2739788A (en) * 1954-11-30 1956-03-27 Henry S Weaver Jack
GB970879A (en) 1961-05-02 1964-09-23 Focke Wulf Gmbh Improvements in or relating to telescopic masts for supporting working platforms
GB1077596A (en) * 1965-04-12 1967-08-02 H E Adamsson Ab Hospital bed
US3851854A (en) 1973-07-05 1974-12-03 F Roybal Construction robot
FR2366213A1 (en) 1974-06-20 1978-04-28 Carlino Armando Jointed universal telescopic lifting device - has several telescopically coupled internally and externally threaded tubes operated by bevel gears
DE3305074A1 (en) 1983-02-14 1984-08-23 Dwiputra, Tun, Surabaya Lifting platform which can be raised and lowered by means of a mechanical height adjustment device
DE8504480U1 (en) 1985-02-16 1985-05-30 Pott, Richard, 4937 Lage Construction element in support core construction in the form of a flat plate or a shell component for use as a hood, cover or the like.
US4831291A (en) * 1987-10-28 1989-05-16 Kaman Instrumentation Corporation Differentially wound electromagnetic actuator
JPH053640Y2 (en) * 1987-12-23 1993-01-28
JP3153508B2 (en) 1994-02-18 2001-04-09 光洋機械工業株式会社 Magnetic screw
JP2887363B2 (en) * 1994-03-21 1999-04-26 シーケーディ株式会社 Rodless cylinder
FR2720732B1 (en) 1994-06-06 1996-09-20 Rocco Compagnone Lifting device.
US5588264A (en) * 1995-02-17 1996-12-31 Buzon; Claude Method and apparatus for supporting a building surface
JPH09202594A (en) 1996-01-30 1997-08-05 Takahiro Ishibashi Screw jack
US5953802A (en) * 1998-02-17 1999-09-21 Radzio; Matthew D. Windshield removal jack
EP0956847A3 (en) * 1998-04-27 2000-04-12 Dieter Gobbers Seat device for shower or bathtub
ES2158759B1 (en) 1998-10-05 2002-05-01 Univ Cantabria CERAMIC ELEMENT OF TABIQUERIA AND CLOSURE, IN PARTICULAR ELEMENT OF ACOUSTIC AND / OR THERMAL INSULATION.
JP3072511B2 (en) * 1998-10-12 2000-07-31 株式会社をくだ屋技研 Lift truck
JP3087066B1 (en) * 1999-04-16 2000-09-11 株式会社をくだ屋技研 Lift truck
JP2002005113A (en) * 2000-06-27 2002-01-09 Hitachi Constr Mach Co Ltd Cylinder device
US6427718B1 (en) * 2000-12-06 2002-08-06 The United States Of America As Represented By The Secretary Of The Interior Automated farm turnout
US6502667B1 (en) 2001-03-08 2003-01-07 Joycedayton Corporation Ergonomic platform lift
JP2002327824A (en) 2001-05-08 2002-11-15 Taiyo Ltd Actuator
JP2004182352A (en) * 2002-11-29 2004-07-02 Kazuo Saegusa Lifter for portable wheelchair
JP2004277134A (en) * 2003-03-18 2004-10-07 Kazuo Saegusa Lifter for folding wheelchair
CN2642760Y (en) * 2003-08-04 2004-09-22 许国智 Improved screw-type support executing device
EP1510157A1 (en) * 2003-09-01 2005-03-02 Goppion S.r.l. Display showcase with improved opening device
JP2005206319A (en) * 2004-01-22 2005-08-04 Kawasaki Kogyo Kk Screw jack
JP4200154B2 (en) 2005-08-04 2008-12-24 徹道 恩田 Rotating telescopic jack
JP3122036U (en) 2006-03-16 2006-06-01 株式会社ツバキエマソン lift device
CN101077763B (en) * 2006-05-22 2012-05-09 上海东锐风电技术有限公司 Manned lift truck
US8291532B2 (en) * 2006-06-21 2012-10-23 Hill-Rom Services, Inc. Canister lift for a patient support apparatus
ES1063797Y (en) 2006-09-26 2007-03-01 Amerinnova S L LARGE FORMAT THERMO-ACOUSTIC STRATIFIED Slab
CN101314459A (en) * 2007-05-31 2008-12-03 力帆实业(集团)股份有限公司 A pneumatic lifting device
CN201187564Y (en) * 2008-05-13 2009-01-28 刘新广 Magnetic screw mechanism
FI20100042L (en) * 2010-02-05 2011-08-18 Veli-Matti Ilari Jussila Lifting platform structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5172442A (en) * 1992-01-03 1992-12-22 Stryker Corporation Litter support having telescoping threaded rod arrangement
DE19818821A1 (en) * 1998-04-27 1999-11-04 Dieter Gobbers Lifting device for lifting a load, in particular for lifting a wheelchair
DE19910545C1 (en) 1999-03-09 2000-07-06 Klaus Duchmann Lifting device for raising and lowering load has outer, rotatably located tube with at least three guide and support components distributed on periphery of inside of outer tube and displaced height wise in relation to one another
CN2809309Y (en) 2005-02-22 2006-08-23 朱均琦 Spiral telescopic pole and spiral telescopic device composed thereby

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2531436A4

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2499764C2 (en) * 2011-12-26 2013-11-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования Марийский государственный технический университет Automotive lifting platform
CN102659056A (en) * 2012-04-27 2012-09-12 江苏科技大学 Heavy-load high-accuracy lifting device with multiple sections capable of freely extending and retracting
CN102705348A (en) * 2012-05-16 2012-10-03 李莉 Reinforced center shaft of jack
ITTO20130593A1 (en) * 2013-07-15 2015-01-16 Brasola S R L TELESCOPIC SCREW JACKET

Also Published As

Publication number Publication date
EP2531438B1 (en) 2015-04-01
JP2013518785A (en) 2013-05-23
CA2789081A1 (en) 2011-08-11
EP2531436A1 (en) 2012-12-12
CA2789182A1 (en) 2011-08-11
JP2013518786A (en) 2013-05-23
CA2789081C (en) 2018-03-13
US20130043445A1 (en) 2013-02-21
WO2011095673A2 (en) 2011-08-11
EP2531438A2 (en) 2012-12-12
US20130014677A1 (en) 2013-01-17
FI20100042A7 (en) 2011-08-18
CN102869600A (en) 2013-01-09
EP2531438A4 (en) 2013-10-09
EP2531436A4 (en) 2013-10-09
WO2011095673A3 (en) 2011-09-29
CN102947212A (en) 2013-02-27
FI20100042L (en) 2011-08-18
US9469516B2 (en) 2016-10-18
FI20100042A0 (en) 2010-02-05

Similar Documents

Publication Publication Date Title
US20130014677A1 (en) Device for lifting and lowering
US10934727B2 (en) Deck hoist and basket for use in construction
US9790696B2 (en) Deck with a slidable platform
US10106995B2 (en) Deck for use in construction
CN214003430U (en) Movable ship loader
CN118744902B (en) A kind of building waterproofing coil stacking device
CN112537728A (en) Adjustable counter weight device of tower machine
CN209306480U (en) Full-automatic telescopic material loading platform
CN212246065U (en) Building engineering material lifting machine
CN106553968A (en) It is a kind of can on-load luffing lifting arm elevator apparatus
CN210105344U (en) Over-and-under type construction platform of unloading
CN113216667B (en) Movable architectural decoration protection network installation component
CN2410277Y (en) All slewing crane with lifting cradle
CN210710627U (en) Elevator of adjustable wallboard
CN113653303A (en) Construction platform for building construction engineering construction
CN218931526U (en) Net height cantilever crane
CN110593910B (en) Telescopic sliding platform and trolley comprising same
CN209259612U (en) A kind of feeding device for construction
CN211447725U (en) Variable hanging basket for housing construction
CN113653302A (en) House building engineering's construction platform
KR101662476B1 (en) Up-and-Down Type Runaway Approach Lamp Post
CN222771834U (en) A temporary construction frame for building construction
CN110577088A (en) Well lid hoisting device and hoisting method thereof
CN214611375U (en) Safety maintenance frame for elevator maintenance
KR101150314B1 (en) tower cranes going up and down pulley

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 201180017955.2

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11739431

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2789182

Country of ref document: CA

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2012551653

Country of ref document: JP

REEP Request for entry into the european phase

Ref document number: 2011739431

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2011739431

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 13577074

Country of ref document: US