DD268459A1

DD268459A1 - Scissor

Info

Publication number: DD268459A1
Application number: DD31258988A
Authority: DD
Inventors: Hans Buessow; Peter Haase; Alexander Schulze; Dieter Schlegel
Original assignee: Ifa Ingenieur Betrieb Veb
Priority date: 1988-02-01
Filing date: 1988-02-01
Publication date: 1989-05-31

Abstract

Die Erfindung betrifft einen Scherenhubtisch mit zwei innerhalb einer Grundplatte und einer Tischplatte angeordneten Scherenpaare, von denen einerseits des Hubtisches zwei Scherenhebelhaelften an der Tischplatte und an der Grundplatte schwenkbar gelagert sind und andererseits jeweils zwei Scherenhebelhaelften an der Tischplatte und an der Grundplatte anlenkbar sind, wobei zwei parallel verlaufende Scherenhebel an mindestens einer Scherenhebelhaelfte mittels einer Traverse verbunden sind und dass jedes Scherenpaar von einem an der Grundplatte verschwenkbaren Arbeitszylinder hoehenverstellbar ist. Waehrend Ziel der Erfindung ist, einen Scherenhubtisch zu schaffen, der mit geringstmoeglichen und optimal dimensionierten Bauelementen einen hohen Wirkungsgrad erreicht, besteht die Aufgabe darin, einen Antrieb zu schaffen, der ein Heben einer Maximallast aus der Grundstellung ueber den gesamten Hubbereich mit annaehernd gleicher Kraftverteilung ermoeglicht. Erfindungsgemaess wird dies erreicht, dass auf der Grundplatte (1) andererseits der gelagerten Scherenhebelhaelften (3; 4) und innerhalb der Scherenpaare vorzugsweise zwei schwenkbar gelagerte Zusatzhebel (9) vorgesehen sind, dass die Zusatzhebel (9) bis zu teilweise ausgefahrenen Arbeitszylinder (7) mit ihren freien Enden im zentrischen Bereich der Tischplatte (2) anlegbar sind und dass die Zusatzhebel (9) mit je einem Zusatzarbeitszylinder (10) verbunden sind. Fig. 1The invention relates to a Scherenhubtisch with two arranged within a base plate and a table top pairs of scissors, of which on the one hand the lifting table two Scherenhebelhaelften on the table top and the base plate are pivotally mounted and on the other hand two Scherenhebelhaelften to the table top and the base plate are articulated, two parallel scissor levers are connected to at least one Scherenhebelhaelfte means of a crossbar and that each pair of scissors is height adjustable by a pivotable on the base plate working cylinder. While the object of the invention is to provide a scissor lift, which achieves a high efficiency with the lowest possible and optimally dimensioned components, the object is to provide a drive that allows lifting a maximum load from the basic position over the entire stroke range with almost equal force distribution , According to the invention, this is achieved by providing on the base plate (1), on the other hand, the mounted scissor lever halves (3; 4) and preferably two pivotally mounted additional levers (9) within the pair of scissors, that the additional levers (9) extend to partly extended working cylinders (7). with their free ends in the central region of the table top (2) can be applied and that the additional lever (9) are each connected to an additional working cylinder (10). Fig. 1

Description

Erfindungsgomäß the object is achieved in that on the base of the other hand mounted Scherenhebeihälften

und innerhalb der Scherenpaare vorzugsweise zwei schwenkbar gelagerte Zusatzhebel vorgesehen sind, daß die Zu3atzhebelbis zu teilweise ausgefahrenen Arbeitszylinder mit ihren freien Enden an der Tischplatte anlegbar sind und daß die Zusatzhebelmit je einem Zusatzarbeitszylinder verbunden sind. Die Zusatzhebel sind mit mindestens einor Traverse veibunden. Dieand preferably two pivotally mounted additional levers are provided within the pair of scissors, that the Zu3atzhebel to partially extended cylinder with their free ends can be applied to the table top and that the Zusatzhebelmit are each connected to an additional working cylinder. The additional levers are with at least one traverse veibunden. The

Additional levers are articulated in the region of their free ends by means of Zusatiarbeitszylinder. The additional working cylinder are arranged almost perpendicular to the base plate and pivotally mounted. The solution ensures that lifting a maximum load from the basic position over the entire stroke range with

annähernd gleicher Kraftverteilung sowie geringstmöglichen und optimal dimensionierten Bauolemunten ermöglicht wird.Almost the same power distribution and the lowest possible and optimally dimensioned Bauolemunten is possible.

embodiment

Die Erfindung soll nachstehend an einem Ausführungsbeispiel näher erläutert werden. Die zugehörige Zeichnung; eigt:The invention will be explained in more detail below using an exemplary embodiment. The accompanying drawing; isplays:

Fig. 1: den Querschnitt einns schematisch dargestellten Scherenhubtisches in Grundstellung Fig.2: don Querschnitt einos Scherenhubtisches nach Fig. 1 in EndstellungFig. 1: the cross section einns schematically illustrated Scherenhubtisches in basic position Fig.2: don cross section einos scissor lift according to Fig. 1 in the end position

Nach Fig. 1 und 2 besteht dor Scherenhubtisch aus zwei innerhalb der Grundplatte 1 und einer Tischplatte 2 angeordneten Scherenpaaren, ν on denen jeweils einerseits des Hubtische; zwei Scherenhebeihälften 3 an der Tischplatte 2 und zwei Scherenhebelhäl ten 4 an der Grundplatte 1 schwenkbar gelagert sind. Andererseits des Hubtisches sind jeweils zwei Scherenhebelhäl ton 5 an der Tischplatte 2 und zwei Scherenhobelhälften 6 an der Grundplatte 1 anlenkbar angeordnet. Die an der Tischplatte 2 {schwenkbar gelagerten Scherenhebelhälfton 3 sind in vorteilhafter Weise mit je einem mit den Lagerstellen der Scherenhebeihälften 4 schwenkbar angeordneten Arbeitszylinder 7 für die Höhenverstellung der Scherenpaare verbunden. Für die Stabilisierung der Schorenpaare sind die Scherenhebeihälften 3 und 6 mit einer Traverse 8 verbunden. Auf der Grundplatte 1 sind andererseits der gelagerten Scherenhebeihälften 3 und 4 und innerhalb der Scherenpaare zwei schwenkbar gelagerte Zusatzhebel 9 vorgesehen, die bis zu teilweise ausgefahrenen Arbeitszylindern 7 mit ihren freien Enden an der Tischplatte 2 von je einem Zusatzarbeitszylinder 10 nnlenkbar sind. Die Zusatzhebel 9 sind mit einer Traverse 11 verbunden und im Bereich ihrer freien Enden mit den Zusatzarbeitszylindern 10 verbunden. Die Zusatzarbeitszylinder 10 rJnd nahezu senkrecht angeordnet und an der Bodenplatte 1 schwenkbar gelagert.According to Fig. 1 and 2 dor scissor lift consists of two arranged within the base plate 1 and a table top 2 pairs of scissors, on each of which on the one hand of the lifting tables; two Scherenhebeihälften 3 on the table top 2 and two Scherenhebelhäl th 4 are pivotally mounted on the base plate 1. On the other hand, the lifting table are each two Scherenhebelhäl sound 5 on the table top 2 and two scissor planer halves 6 articulated to the base plate 1. The on the table top 2 {pivotally mounted Scherenhebelhälfton 3 are connected in an advantageous manner, each with a pivotally arranged with the bearing points of Scherenhebeihälften 4 working cylinder 7 for the height adjustment of the pairs of scissors. To stabilize the pairs of shears, the scissors-lifting halves 3 and 6 are connected to a traverse 8. On the base plate 1, on the other hand, the stored Scherenhebeihälften 3 and 4 and provided within the pair of scissors two pivotally mounted additional lever 9, which are nnlenkbar up to partially extended working cylinders 7 with their free ends on the table top 2 by a respective additional working cylinder 10. The additional lever 9 are connected to a cross member 11 and connected in the region of their free ends with the additional working cylinders 10. The additional working cylinder 10 rJnd arranged almost vertically and pivotally mounted on the bottom plate 1.

Claims

1. scissor lift with two arranged within a base plate and a table top Scherenpaaio, of which on the one hand the lifting table two scissor lever halves are pivotally mounted on the table top and on the base plate and on the other hand two scissor lever halves are hinged to the table top and the base plate, wherein two parallel Scissor levers are connected to at least one scissor lever half by means of a crossbar and that each pair of scissors is height adjustable by a pivotable on the base cylinder working cylinder, characterized in that on the base plate (1) on the other hand, the stored scissor lever halves (3; 4) and within the pair of scissors preferably two pivotable mounted additional lever (9) are provided, that the additional lever (9) up to partially extended working cylinders (7) with their free ends in the central region of the table top (2) can be applied and that the additional lever (9), each with a Zusatza Working cylinder (10) are connected.

2. scissor lift according to item 1, characterized in that the additional lever (9) with at least one cross member (11) are connected.

3. scissor lift nacli point 1 and 2, characterized in that the additional lever (9) in the region of their free ends by means of additional working cylinder (10) are articulated.

4. scissor lift according to item 1 to 3, characterized in that the additional working cylinder (10) on the base plate (1) are arranged almost vertically and pivotally mounted.

For this 2 pages drawings

Field of application ddr invention

The invention relates to a Sr.herenhubtisc. ¹ with two arranged within a base plate and a table top pairs of scissors, of which each two of the hob two scissor lever halves are pivotally mounted on the table top and on the base plate and on the other hand two scissor lever halves on the table top and the base plate are articulated, with two parallel scissor arms at least one scissor lever half are connected by means of a traverse and that each pair of scissors is height-adjustable by a pivotable on the base plate working cylinder.

Characteristic of the known technical solution

Known is a scissor lift table according to DE-OS 2,635,197, in which between a lower and a platform covered with a top frame each pair of scissors forming outer and inner levers at their ends iitrr "i> -" ersen connected and in each case two articulated for the lower and upper frame truss axles on the lower and upper rails or are slidably mounted in guides of the lower and upper frame and which is height adjustable by a drive unit, which is provided as a drive unit at least one anteibbares by a drive motor Kettenradgetriobe. The disadvantage is that the drive line of the motor must be considerably oversized due to the asymmetrical geometry of the scissors in the starting position.

Furthermore, a lifting table to DE-OS 3442940 is known, with a scissors levers held by a scissors linkage table top and arranged below the table top in the base frame scissor drive, which consists of a spindle drive, the spindle nut is connected to the scissor arms and a gear coupling, in the Totpunktbereich of the scissors linkage has a free lift and that is provided for the initial lifting of the fully lowered table top to the determined by the free lift measure a separate lifting member. The disadvantage is that'ein high material complexity by the application of the spindle drive is required that the spindle drive must be strongly dimensioned and its elements are subject to wear.

Object of the invention

The aim of the invention is to provide a scissor lift, which allows a high efficiency with the lowest possible and optimally dimensioned components.

Essence of the invention

The invention has the object zugiunde to provide a Scherenhubtisch mentioned above with a drive that allows lifting a maximum load from the basic position over the entire stroke range with approximately the same power distribution.