DE686615C - Scissor lifting device - Google Patents
Scissor lifting deviceInfo
- Publication number
- DE686615C DE686615C DE1937H0151123 DEH0151123D DE686615C DE 686615 C DE686615 C DE 686615C DE 1937H0151123 DE1937H0151123 DE 1937H0151123 DE H0151123 D DEH0151123 D DE H0151123D DE 686615 C DE686615 C DE 686615C
- Authority
- DE
- Germany
- Prior art keywords
- lifting device
- scissor
- tabs
- scissor lifting
- handlebars
- 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
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
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/065—Scissor linkages, i.e. X-configuration
-
- 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
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/0625—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement with wheels for moving around the floor
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Handcart (AREA)
Description
Scherenhel?echtung Die Erfindung bezieht sich auf eine Scherenhebevorrichtung und besteht darin, daß auf die Scherenlenker Laschen aufgesetzt sind, die den gemeinsamen Drehpunkt der Schere so weit außerhalb des Kreuzungspunktes der Lenker führen, daß das der Schere eigene veränderliche Weg-Hub--Verhältnis mit ungünstig hohem Anzugsmoment in ein vorteilhafteres Verhältnis mit leichterem Anzugsmoment entsprechend der Länge der Laschen umgewandelt wird und die gegebenenfalls erforderliche Veränderung der Stützgrundfläche erfindungsgemäß durch Längsverschiebung der Laschen an den Lenkern bewirkt wird.Scissor lifting device The invention relates to a scissor lifting device and consists in the fact that tabs are placed on the scissor link that share the common Move the pivot point of the scissors so far outside the point of intersection of the handlebars that the variable travel-stroke ratio inherent to the scissors with an unfavorably high tightening torque in a more advantageous ratio with a lighter tightening torque according to the length of the tabs is converted and any necessary changes to the Support base according to the invention by longitudinally shifting the tabs on the links is effected.
In der Zeichnung ist der Gegenstand der Erfindung dargestellt.In the drawing, the subject matter of the invention is shown.
Die Scherenhebevorrichtung besteht aus einem unteren Rahmen, einem oberen Rahmen, zwei Scherenlenkerpaaren, die mittels Rollen und Gelenkbolzen im oberen und unteren Rahmen geführt bzw. gehalten werden, und aus .einer Antriebsvorrichtung, mittels welcher die unteren Enden der Lenker beim Heben zusammengezogen werden.The scissor lifting device consists of a lower frame, a upper frame, two pairs of scissor links, which are fixed by means of rollers and hinge pins in the upper and lower frame are guided or held, and from .einer drive device, by means of which the lower ends of the handlebars are pulled together when lifting.
Die beiden Scherenlenkerpaare i; 2 tragen senkrecht zu der Längsachse der Lenker stehende Laschen oder Stützen 22, die an ihrem Endpunkt das Lager für den gemeinsamen Drehpunkt der Gelenkachse 3. bilden. Die Enden des Scherenlenkers i werden in dem: Tragrahmen 5 und in dem Grundrahmen 6 mittels der Rollen 4 geführt; *die Enden des Scherenlenkers 2 sind entweder drehbar mittels Bolzen am Tragrahmen 5 und Grundrahmen 6 angelenkt oder werden unten gemeinsam mit Scherenlenker i durch eine Antriebsspule zusammengezogen. Im Grundrahmen 6 ist die Antriebswelle io gelagert, iuf welcher die Spulen g für die Antriebsketten 8 befestigt sind und welche die beiden Hauptlaufräder 12 aufnimmt.The two pairs of scissor links i; 2 bear perpendicular to the longitudinal axis the handlebars standing brackets or supports 22, which at their end point, the bearing for form the common fulcrum of the joint axis 3. The ends of the scissor arm i are guided in the: support frame 5 and in the base frame 6 by means of rollers 4; * The ends of the arm 2 can either be rotated by means of bolts on the support frame 5 and base frame 6 are hinged or are down together with scissors handlebar i through a drive coil pulled together. The drive shaft is mounted in the base frame 6, iuf which the reels g for the drive chains 8 are attached and which the two main wheels 12 receives.
Die Lenker i, 2 besitzen Bohrungen 2o, die mit Bohrungen der Laschen 22 übereinstimmen und in ihrer Anzahl ein Verschieben und Befestigen der Laschen 22 in Längsrichtung der Lenker z, 2 zulassen. Hierdurch wird .eine Veränderung des Kraft-Lastarm-Verhältnisses sowie Veränderung des Verhältnisses der oberen zur unteren Stützgrundfläche herbeigeführt, was not-,vendig wird, wenn eine sehr große Hubhöhe die untere Stützgrundfläche zu klein werden läßt.The handlebars i, 2 have holes 2o with holes in the tabs 22 match and in their number a shifting and fastening of the tabs 22 in the longitudinal direction of the handlebars z, 2 allow. This will cause a change in the Force-load arm ratio as well as changing the ratio of the upper to the lower Support base brought about what is necessary, vendig if a very large lifting height makes the lower support base area too small.
Die Wirkungsweise ist folgende: Beim Heben wird durch Drehen der Antriebswelle io im Uhrzeigersinne ein. Aufspulen der Kette 8 und damit ein Zusammenziehen der unteren Scherenlenkerenden i bewirkt. Der erforderliche Kraftbedarf richtet sich, außer nach der Größe der Last noch nach der Länge der Laschen 22, die auf die Lenker i, 2 aufgesetzt sind und die gemeinsame Gelenkachse 3 aufnehmen, und zwar wird das Anzugsmoment um so geringer sein, desto länger das Lot vom Gelenkpunkt 3 auf die Scheren-Lenker i, 2 ist. 'Die Höhe der Laschen 22 ist also bestimmend. Das Senken erfolgt durch entgegengesetzte Drehung der Triebwelle io.The mode of operation is as follows: When lifting, the drive shaft is turned io clockwise one. Winding up the chain 8 and thus a contraction of the lower arm ends i causes. The required force is based on except for the size of the load nor for the length of the tabs 22 on the handlebars i, 2 are attached and take up the common joint axis 3, that is The lower the tightening torque, the longer the perpendicular from the pivot point 3 to the Scissor handlebar i, 2 is. 'The height of the tabs 22 is therefore decisive. The lowering takes place by turning the drive shaft in the opposite direction.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1937H0151123 DE686615C (en) | 1937-03-23 | 1937-03-23 | Scissor lifting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1937H0151123 DE686615C (en) | 1937-03-23 | 1937-03-23 | Scissor lifting device |
Publications (1)
Publication Number | Publication Date |
---|---|
DE686615C true DE686615C (en) | 1940-01-12 |
Family
ID=7181090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1937H0151123 Expired DE686615C (en) | 1937-03-23 | 1937-03-23 | Scissor lifting device |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE686615C (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE920390C (en) * | 1940-09-04 | 1956-01-12 | Wilhelm Dr-Ing Ludowici | Scissor lifting device |
DE910115C (en) * | 1938-07-14 | 1956-01-19 | Wilhelm Ludowici Dr Ing | Lifting scissors |
DE1127563B (en) * | 1957-11-04 | 1962-04-12 | Steinbock G M B H | Stage with a platform that can be raised using Nuremberg scissors |
US3085586A (en) * | 1960-07-05 | 1963-04-16 | Elon D Mcdonough | Foldable tent structure |
US3447635A (en) * | 1967-10-12 | 1969-06-03 | Leonard Rapaport | Elevating platform |
DE3717247A1 (en) * | 1987-02-11 | 1988-08-25 | Paul Markreiter | Scissors platform lift |
-
1937
- 1937-03-23 DE DE1937H0151123 patent/DE686615C/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE910115C (en) * | 1938-07-14 | 1956-01-19 | Wilhelm Ludowici Dr Ing | Lifting scissors |
DE920390C (en) * | 1940-09-04 | 1956-01-12 | Wilhelm Dr-Ing Ludowici | Scissor lifting device |
DE1127563B (en) * | 1957-11-04 | 1962-04-12 | Steinbock G M B H | Stage with a platform that can be raised using Nuremberg scissors |
US3085586A (en) * | 1960-07-05 | 1963-04-16 | Elon D Mcdonough | Foldable tent structure |
US3447635A (en) * | 1967-10-12 | 1969-06-03 | Leonard Rapaport | Elevating platform |
DE3717247A1 (en) * | 1987-02-11 | 1988-08-25 | Paul Markreiter | Scissors platform lift |
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