DE102006002184B4 - Method for motor-driven lifting of a scissors pedestal and scissors pedestal - Google Patents

Abstract

Method for lifting a scissor platform (1) or a plurality of scissor platforms (1) for the construction of a stage or a podium, wherein a scissor platform (1) has a fixed base (2) on the bottom and a platform (3) on the top, which can be operated by means of a Scissor drives (4) are adjustable in height, characterized in that in order to set up a desired platform, the scissor platforms (1) are each adjusted to such an extent that the platforms (3) are located immediately above a desired latched height position and then individually or in relation to a group of Pedestals a lowering of each scissor platform (1) or the group of scissor platforms (1) is carried out, a locking bolt (33) being in a secured unlocking position, but being pretensioned into the locking position or being in a safe unlocking position in the starting position and hydraulic, pneumatic or elect risch on the locking bolt (33) can be acted upon, the locking is carried out automatically in the desired height position in the course of the lowering movement or the platforms (3) immediately ...

Description

The invention relates firstly to a method for the motorized lifting of a scissors pedestal or of a plurality of scissor pedestals according to the features of the preamble of claim 1.

A scissor landing is for example from the DE 41 20 711 C1 known. This is adjustable in height by means of a motor drive fixed to the undercarriage, wherein a motor with self-locking gear is provided which drives spindles via a chain drive.

Next is the state of the art on the EP 345 421 A1 to refer. In the scissor landing known from this one of manual adjustment and locking is required in each case. The same is from the DE 31 00 163 C2 known.

On the basis of the cited prior art, the object of the invention is first of all to provide a method for the motorized lifting of a scissor landing, which permits an advantageous construction of a stage or a podium, and a scissor podium suitable for this purpose.

This object is procedurally achieved by the subject matter of claim 1, wherein it is pointed out that for setting up a desired stage, the scissor pedestals are each höhenverstellt so far that the platform are located directly above a respective desired latched height position and then individually or concerning a group a lowering of each scissor platform or the group of scissor pedestals is carried out by podiums, wherein a locking pin is in a secure unlocked position, but biased into the locking position or is in traversing home position in a secure unlocked position and hydraulically, automatically or electrically, on the locking pin can be acted upon, wherein further in the course of the lowering movement, the locking in the desired height position is performed automatically or the platform is immediately below a respective desired locked Höhenstellun g and then individually or in relation to a group of scissor pods lifting each scissor pedestal or the group of scissor podests, wherein in the course of the lifting movement, the locking in the desired height position is performed automatically.

According to the device, the object is achieved by the subject matter of claim 12, which is based on that is acted upon by a motor-driven spindle of the spindle drive directly on the travel shoe, wherein the latching between the travel shoe and the platform takes place and that in traversing starting position a locking pin is in a secure unlocked position, but is biased into the locking position or that the locking pin is in traversing home position in a secure unlocked position and hydraulically, pneumatically or electrically acting on the locking pin.

The detent fixing has the advantage that the drive for the shear drive must not be designed to hold the platform in the desired altitude. Rather, a relief of the drive is achieved via the locking determination. The locking is not achieved by manual intervention as known from the prior art, reached or prepared. Rather, the corresponding catch member finds the associated locking receptacle in the pedestal counterpart automatically, which is spent by a corresponding movement of the platform of the locking bolt initially from an inactive to an active position automatically. Thus, for example, a locking bolt or the like after the automatic activation spring-loaded against a, the associated detent opening having cheek, wherein further in the course of movement of the platform from a lower position to an upper position or vice versa, due to the spring action, the locking pin on this Along the cheek, until the bolt automatically falls into the next detent opening. According to different, predetermined height adjustments of the platform a plurality of detent openings are provided in the cheek. If the automatic activation of the catch member in the course of a lowering, so by means of the proposed method, a scissor landing can be spent without active engagement on the locking member by the user in the desired, secured height position, especially if from a basic position, the pedestal is to be raised and this basic position is not rest assured. However, it may prove to be advantageous that the basic position in which the platform is supported on the undercarriage, is rastersicherbar. In this case, a manual intervention to cancel the catch is required before the onset of lifting. However, the desired height position is then rest assured without further manual intervention. Alternatively, the automatic locking can also take place in the course of the lifting movement.

It is envisaged that the height adjustment is performed by means of a spindle drive and that is acted upon by means of the spindle of the spindle drive directly on the travel shoe. Accordingly, the locking is carried out in the immediate vicinity of the point of action of the spindle drive. The spindle drive is preferably completely relieved in the latching setting position of the platform. It also proves advantageous if in the non-activated state, the locking by means of a Spring bias is acted upon in a latching position on a locking pin of the locking device. The locking pin can grind under this spring preload with its free, intended for the locking end along an associated, the detent openings having cheek in the course of the platform movement. This, for example, both in the course of an upward and in the course of a downward movement of the platform. Alternatively, this state, ie, the spring-loaded sliding contact with the cheeks having the detent openings can be achieved only by a deliberate activation, while in the non-activated state, the locking pin is still urged spring loaded in the direction of the detent position, but this prevents an establishment to be activated. It can be further secured, for example in the course of lifting the platform of the locking bolt to be activated only when lowering the platform after exceeding the desired height position, after which the locking pin is released to obtain the Rastfestlegungsstellung. Also, the reverse arrangement is grateful, in which in the course of the upward movement of the platform of the locking pin in the activated position and accordingly automatically incident in the next detent opening, while in the lowering movement of the platform of the locking pin is secured in the retracted, although spring-loaded non-activation position.

In a further development of the subject invention, it is provided that for lifting the platform first a scissor arm of the shear drive is under attack and staked from the base and that is then acted immediately by means of a spindle drive on a scissor arm in the installation direction. According to this method according to the invention, an effective support of the shearing drive during start-up, in particular from the folded-up basic position of the scissor landing is achieved. Especially in this folded basic position relatively high forces are needed to make the shallow lying in this position scissor arms. Depending on the chosen shear solution, the scissor arms stretched between the base frame and the platform can be aligned in the basic position to a horizontal position. The method according to the invention first causes the scissor arm to be grasped under and removed from the underframe in order to move this scissor arm into an angular position that is favorable for the further motor deployment. Due to the advanced stemming of the scissor arm from the undercarriage, the necessary power for lifting the platform, in particular from the basic position of the scissor pest, is substantially reduced compared with a motor drive without the stiffening according to the invention. The stemming and the spindle adjustment acting on the scissor arm immediately afterwards can not be carried out successively. Rather, these lifting movements can also be superimposed. According to the invention, the action of the spindle drive on a scissor arm takes place directly, whereby this action does not necessarily have to take place directly on the scissor arm. Rather, directly in the context of the invention also means an action on a fixed or pivotally connected to the scissor arm component, such as, for example, a force acting on the scissor arm travel shoe or the like.

It can further be provided that both the removal of the scissor arm from the underframe and the direct action on the scissor arm in the installation direction are carried out with the same spindle drive. For this purpose, the motor drive sets a spindle in rotary motion, by means of which the scissor arm is initially staked out of the underframe in support of lifting out of a folding position. By acting directly on the scissor arm, by means of this spindle, the setting up of the scissor arm and thus the vertical spacing of the platform from the underframe are brought about at the same time or subsequently, after reaching a maximum jacking height achieved by reaching under. For this purpose, in a preferred embodiment, the spindle drive on a spindle nut, which moves to brace the spindle arm against a lower frame mounted on the lower lever. This sub-grip lever can be mounted rotatably or linearly movable. The spindle nut is linearly displaced in a known manner upon insertion of the spindle drive by the rotational movement of the spindle. In the course of this linear displacement, the spindle nut acts on the lower gripper lever mounted on the undercarriage in such a manner that, when the bearing is rotatable, raising or swiveling of the lower gripper lever is achieved. By means of the swiveling lower gripping lever, the removal of the scissor arm from the undercarriage is achievable. Here, the lower gripping lever is mounted about an axis of rotation, which extends transversely to the direction of extension of the spindle axis, wherein more preferably the spindle axis extends in the longitudinal extent of the scissor platform or the platform. In an arrangement of a linearly displaceable lower gripping lever, this example, with a wedge surface supportive acting on the scissor arm.

It is also preferably assigned to each longitudinal side of the scissor landing on each side of the platform a spindle is provided, which each act on hinged in this area scissor arms. Correspondingly, two associated lower gripping levers are also provided on the underside, which are initially displaced by the spindles in the Abstemmrichtung. In the course of the further spindle-operated upward displacement of the platform, the spindles or the spindle nuts leave the platform Influence on the lower grip lever, which latter can swing back to a position of origin or linear return. However, the lower gripping levers are preferably spring-loaded in the staking direction. In a further alternative embodiment, it is also possible to provide a central spindle extending in the longitudinal extent of the scissor landing which acts via lateral arms on the scissor arms arranged in the edge region. Accordingly, in this case can be acted upon in the lower frame over this lateral spindle boom and the lower gripping levers.

It is further preferred that after reaching a first intended height of the platform auxiliary supports are extended, which support the platform in addition to the scissor arms on the undercarriage. This proves to be particularly advantageous at such low platform heights in which the scissor arms lifting the platform still include a relatively small, correspondingly relatively acute angle to the horizontal. Due to the resulting unfavorable lever resulting stability problems of extended by this measure scissor podium. The proposed additional support means of the extendable auxiliary supports accordingly provides a higher stability of the scissors pedestal. In this case, the auxiliary supports are preferably arranged on the opposite narrow sides of the scissors pedestal, while the scissor arms are articulated in the region of the longitudinal sides of the scissor pedestal.

The platform can be moved in any case after reaching the direct action of the spindle drive on a scissor arm in predetermined height positions. These predetermined height positions can be defined by corresponding detents. Preferably, these height positions are reached only after reaching the direct action of the spindle drive on a scissor arm, wherein further the lowest height position is also the position in which the platform is supported on the subframe on the auxiliary supports. It is preferably provided that two scissor arms lying opposite each other with respect to the width of the platform are acted upon. It is also proposed that two scissor arms lying one behind the other in the longitudinal direction of the platform are acted upon. Accordingly, a scissor arm pair is associated with one longitudinal side of the platform, the scissor arms of which are acted upon directly by the same spindle. Further preferred is a combination in that acting on two with respect to the width of the platform opposite Scherenarmpaare.

The invention also relates to a method for motor lifting a plurality of scissor pedestals for building a stage or a podium, wherein the scissor pods on the bottom side have a fixed base frame and a platform on the top, which are height adjustable by means of a scissors drive.

In order to further simplify the construction of a stage consisting of a plurality of scissor podiums or a corresponding podium, it is proposed that each scissor landing can be individually controlled by a remote control, for example wireless remote control, and that the scissor podests each extend so far to set up a desired stage be adjusted in height that the platforms are located directly above a respective desired latched height position and then individual lowering of each scissor pedestal takes place, in the course of lowering the latching in the desired height position is performed automatically, or that the platforms are locked immediately below a respective desired Height position and then individually lifting each scissors pedestal takes place, wherein in the course of the lifting movement, the locking in the desired height position is performed automatically. According to this proposed method, the height alignment of not only a scissors pedestal, but also a plurality of such scissor pedestals is substantially simplified. If the scissor pods are correctly positioned in their lowered basic position, the subsequent raising of the individual scissor platforms to the desired height can be carried out directly on the scissor landing without any further manual intervention. This is especially true when the pedestals are not locked in the basic position and the platforms are supported here on the bases. Any necessary locking the basic position is first manually cancel before the onset of lifting. The scissor pods can each be controlled individually and successively spent by means of the proposed remote control, which can also be designed to be wired wired as an alternative to the radio remote control, in the respective altitude. It is also possible to address groups of scissor pods at the same time via the remote control, thus, for example, in the case of a desired arrangement in which groups of scissor podests are intended to be aligned in a staircase to one another. The remote control preferably acts only on the traversing or scissors drive. The activation of the locking in the desired platform altitude is more preferably achieved by the change in direction from lifting in the lowering of the platform. Thus, it is preferred to initially shift the scissor pods slightly above the desired height position, while the upward shift is disabled. After reaching such an excessive position is carried out by changing the direction of travel - change in the Downward displacement - the activation of the locking means, which thereafter either enter directly into the associated detent openings or retract in the course of the downward displacement of the platform in the next possible detent opening. The latched position is detected. The recorded result is used to switch off the drive. In the simplest way, the increase of the motor current in the detent position can be used to switch off the motor. Alternatively, starting from an uppermost position of the platform, for example, it may also be lowered to such an extent that it initially remains below the desired height position, after which the platform is brought into the secured vertical position by lifting and thereby activated latching.

Forces acting on the platform are fed directly into the lower frame via the latch and scissors drive. The drive of the spindle drive is used accordingly only for moving the platform in the course of raising or lowering.

It is further provided that the spindle is arranged independently of a height position of the platform at the same height as the travel shoe. Accordingly, the spindle is raised or lowered together with the platform, further preferably extends in a plane parallel to the platform.

It is further proposed that a lower grip lever is provided, which initially raises it by grasping a scissor arm to a first height. According to this embodiment, a safe lifting of the scissors pedestal from a folded-in basic position can be reached out. The lifting out of this basic position is also feasible by the inventive intervention of a lower grip lever with comparatively low forces. Thus, a scissor arm extends in the retracted basic position almost in the horizontal direction, from which out due to the kinematics given here, only by spindle drive setting up for upward displacement of the platform or only under relatively high effort is feasible. The lower gripping lever causes a lifting of the associated scissor arm from the folded-in basic position out into a position in which a geometry is reached, which allows the further lifting only by the spindle drive. Accordingly, the lower reach lever the scissor arm in a position to the base, in which the scissor arm occupies approximately an angle of 5 ° to 30 °. At least the scissor arm is clearly raised from the horizontal out in the direction of erection before the spindle drive takes over the rest of the setup process.

In addition, it is proposed that the same spindle drive acts both on the lower grip lever and directly on the scissor arm, wherein the term immediately in the sense of the invention also means acting upon the scissor arm with the interposition of a component fastened thereto or hinged thereto. Preferably, the lower grip lever is rotatably mounted on the base frame. This is initially applied in the course of the lifting process from the retracted basic position out so that it causes an increase in the scissor arm under pivoting. For this purpose, the lower gripping lever is preferably mounted about an axis of rotation which extends transversely to the direction of extension of the spindle axis. Alternatively, the lower grip lever can also be mounted linearly displaceable on the base frame, for acting on the scissor arm, for example, by means of a wedge surface.

The spindle drive has a spindle nut, which passes through a driver of the scissor arm and comes to the driver to the stop when the required increase in the scissor arm has taken place. Accordingly, the combination spindle nut-scissor-arm-driver is provided with a freewheel, which initially allows that on the spindle nut an actuation of the lower gripping lever is reached, the same for pivotal displacement. This leads to the increase of the associated scissor arm. With the end of the freewheel a sufficient increase in the scissor arm is achieved, which can be moved due to the stop on the driver of the scissor arm on the spindle further to increase the platform.

In order to achieve a sufficient stability of the scissor landing even at low vertical height of the platform, it is provided in an advantageous development of the subject invention that the sub-side of the platform auxiliary supports are articulated, which pivot when lifting the platform from a Einklappstellung in a support / vertical position. The auxiliary supports may in this case be articulated on the platform and pivot in the course of lifting the platform depending on gravity, possibly still spring assisted, down to its vertical position. Alternatively, the auxiliary supports can also be arranged to be pivotable on the undercarriage, in which case they are spring-biased in the direction of the support / vertical position, so that an automatic pivoting into this position is achieved with vertical lifting of the platform. The auxiliary supports provide additional support against the undercarriage at a selected height of the platform. This selected height depends on the selected length of the auxiliary supports. It is further preferred that the auxiliary supports on the opposite narrow sides of the rest in the floor plan are preferably elongated rectangular scissors pedestal are arranged, while the scissor arms are assigned to the vertical displacement of the platform the longitudinal edge edges of the scissor pedestal. In order to lift the support of the platform against the undercarriage on the auxiliary supports, it is provided that an auxiliary support cooperates when shutting down the platform with a mounted on the base stirrer, which pivots the auxiliary support so far that it then moves automatically when shutting down the platform in the Einklappstellung , This releaser preferably only comes into effect when a renewed, albeit only by a small amount lifting the platform is carried out from the support position out first and only then the lowering of the platform is carried out in the Einklappstellung. The releaser urges the auxiliary support out of the possibly spring-assisted vertical position out into a pivoted position. In a preferred articulation of the auxiliary support on the platform runs after this disengagement, the free end of the auxiliary support when shutting down the platform in the Einklappstellung along a pivoted position of the auxiliary support further holding frame part of the undercarriage.

It is further preferred that the end of a scissor arm is articulated to a travel shoe, which moves parallel to the platform. The cooperating with the spindle nut driver can be formed in this case on the travel shoe, according to which the spindle drive acts on the travel shoe on the scissor arm, this by linear displacement of the travel shoe parallel to a longitudinal edge of the platform, which leads due to the scissor geometry for vertical height change of the platform. The travel shoe has latching openings which coincide in selected positions with latching openings of the frame carrying the frame, for latching a selected height position by locking bolts. These to be secured by locking height positions are preferably reached only after an immediate action of the spindle drive is achieved on a scissor arm. Thus, it is further provided that a locking bolt extends transversely aligned to the spindle axis when reaching a selected height position sideways out of the travel shoe and engages in the latching opening of the platform frame. The locking bolt can be spring-loaded in this locking position. The return displacement of the locking pin to release the vertical adjustment can, for example, be done electromechanically. In particular, in an embodiment in which the locking bolt is spring preloaded in the direction of the detent position, by turning off the retraction mechanism of the locking bolt this can slide with its free end along the facing surface of the platform frame in the course of Verfahrschuhverlagerung until the next detent opening is reached. In this then enters the locking pin automatically. This position is further detectable, so that thereafter automatically a possible electric motor drive for the spindle drive is turned off.

In a preferred arrangement of two with respect to the width of the platform opposite scissor arms each scissor arm is associated with a spindle, each acting on a hinged scissor arm traveling shoe. Also, each scissor arm is associated with a lower grip lever on the subframe. In addition, it is preferred that in the longitudinal direction of the platform on each longitudinal side one behind the other scissor arms are provided for forming with respect to the width of the platform opposite Scherenarmpaaren, wherein further each a pair of scissor arms is acted upon by a, opposite threaded portions having spindle.

It also proves to be advantageous if, in the travel starting position, a latching bolt is in a secured unlocking position, but is spring-biased into the locking position. The locking pin is correspondingly in the traversing starting position, but possibly also beyond an activation of the locking bolt in a standby position, which is selectively triggered, after which the locking pin moves according to the spring bias in the direction of the locking position. This does not necessarily mean that upon activation, ie, after a release of the locking bolt, this is incident directly into an associated detent opening. Rather, the locking bolt can also first against a cheek or the like, which has these locking openings, stop limit and grind in the course of further movement of the scissor landing along this cheek to the next detent opening. The spring preload can be achieved by means of a conventional coil spring or the like. Also conceivable are solutions in which leaf springs or the like act on the locking bolts. A hydraulic or pneumatic or electrical action on the locking bolt is alternatively possible. To unlock the unlocked position preferably acts from the drive movement for height adjustment derived moved release part on the locking bolt-a fuse. This release part can act directly on the locking pin or on the fuse. In this case, an embodiment in which the release part is mounted on a chain drive proves particularly advantageous. As an alternative to such a chain drive, for example, a belt drive can also be provided. The linear displacement of the chain support bearing the release part is derived from the lifting or lowering movement of the platform. Accordingly, the positioning of the arming part in direct dependence on the platform height achieved. To the scissor landing or the platform secured in different height positions by means of the locking bolt to hold, a plurality of release parts is provided, the provided in chain running direction next release member acts in a lift on the locking pin backup. Thus, it is further proposed in this regard that the number of de-energizing parts corresponds to the number of possible detent positions. The release parts are arranged on the chain drive according to each other spaced apart. In a preferred embodiment of the subject invention, it is provided that a release part - or several to all release parts - overflows the locking pin backup when booting the platform. Consequently, the locking pin remains in the course of the booting of the platform in its secured, although spring-loaded position. The locking bolt lock is triggered in a preferred embodiment when shutting down the platform by a release part and that by the shutting down on the chain drive next to the locking bolt fuse supplied release part. Alternatively, it can also be provided that a release part or several or all release parts override the latch bolt securing device when the platform is lowered, the securing being triggered by the next release part in the course of lifting the platform. Also, in the arrangement of several release parts on the chain drive can be spent, for example, by manual intervention before a first startup of the platform or before shutting down the platform to obtain the desired height, the corresponding arming element in an activation position. Also, in an arrangement of several Entsicherungselemente after a release of the locking bolt backup in the course of shutdown of the platform eg. By manual intervention the locking bolt fuse can be reactivated, which fuse is then repealed by possibly subsequent next release part turn. The chain drive is driven by the horizontal movement of the travel shoe. In a preferred double scissor arrangement per longitudinal side and hereby further provided two Verfahrschuhen the chain drive is formed as an open chain, the two free ends are each connected to a travel shoe. The deflection of the chain drive takes place on a leg, preferably a transverse leg, which is associated with the platform.

The invention with reference to the accompanying drawings, which illustrates only two embodiments, explained in more detail. It shows:

1 in a schematic perspective view of an inventive scissor landing in an intermediate installation, concerning a first embodiment;

2 a longitudinal section through the scissor landing in Einklappstellung;

3 a front view against the scissor podium with a view of a narrow side;

4 an enlargement of the area IV in 2 ;

5 a plan view of a Spindeltriebmitnahme according to the arrow V in 4 with the omission of a platform;

6 one of the 4 corresponding representation, but after a first lifting a scissor arm;

7 one of the 5 corresponding representation, but the Scherenarmstellung according to 6 concerning;

8th a perspective view of a sub-gripping lever in a staggered the associated scissor arm position according to the position in 6 ;

9 a detailed perspective view of the associated scissor arm articulated Verfahrschuhs;

10 a schematic sectional view along the line XX in 9 representing a detent situation for establishing a selected altitude position;

11 one of the 2 corresponding longitudinal section, but concerning the erected position of the scissor podium;

12 a detailed representation of the side view according to 2 with regard to two auxiliary supports held in the folded position;

13 one of the 12 corresponding representation, but concerning the support position of the auxiliary supports;

14 one of the 13 corresponding representation, but after out of the support position out lifting the auxiliary supports;

15 a following presentation of the 14 , wherein the auxiliary supports are lowered again after lifting from the support position in the vertical direction and pivoted by releaser in the direction of the Einklappstellung;

16 the situation according to 15 but in perspective view;

17 a schematic sectional view in plan view according to the arrow XVII in 3 ;

18 a detail in plan view, omitting the cover plate of the platform, concerning a second embodiment;

19 a perspective view according to the arrow XIX in 18 :

20 the enlargement of the area XX in 18 , concerning the basic position of a locking bolt securing;

21 one of the 20 corresponding presentation, but with regard to the secured position;

22 the section according to the line XXII-XXII in 19 , an intermediate position in the wake of the platform launch;

23 one of the 22 corresponding representation, however, in the course of a shutdown of the platform;

24 a following presentation of the 23 when triggering the locking bolt fuse;

25 in a schematic representation of the arrangement of a plurality of pedestals, which are controlled by a remote control.

Shown and described is first with reference to 1 a scissor podium 1 to build a stage or a podium. By compilation with other similar scissor podests 1 are correspondingly larger-scale stages or podiums to create.

The scissor pedestal 1 has first in the usual way a bottom side fixed, a frame aufziehendes base 2 and a platform on the top 3 on. The latter is by means of a shearer 4 height adjustable, taking on the shearer 4 for height adjustment by means of a spindle drive 5 is acted upon.

The undercarriage 2 is formed by an elongated in plan ground rectangular frame with two opposing, parallel frame longitudinal legs 6 and two connecting them, also oppositely parallel frame transverse legs 7 ,

Each corner of the base 2 assigned is a scissor arm 8th hinged, which has a long arm 8th' and a short arm 8th'' having. Every scissor arm 8th thus has substantially a V-shape, based on the extended state as shown in FIG 1 or in 11 , The short scissor arm 8th'' is at a corner of the platform 3 carrying upper frame 9 hinged. The other end of the short scissor arm 8th'' is in rotary connection with the long scissor arm 8th' , This training in the joint about the middle of the longitudinal extent of the long scissor arm 8th' ,

The upper frame 9 associated end of the long scissor arm 8th' is in the course of adjusting the scissor podium 1 along a peripheral edge of the upper frame 9 traversable.

The on the upper frame 9 arranged platform 3 can be, for example, a parquet or the like. The undercarriage 2 and the upper frame 9 as well as the scissor arms 8th are made in a preferred embodiment of aluminum.

The upper frame 9 associated end of the long scissor arm 8th' is by means of a scissor arm 8th' articulated traversing shoe 10 along the frame's longitudinal leg of the upper frame 9 traversable. This travel shoe 10 is in 9 shown. As from the further sectional view in 10 to recognize, includes the travel shoe 10 with a sliding section 11 one from the upper longitudinal leg 12 inward facing horizontal collar 13 , About the travel shoes 10 In addition, the support of the upper frame also takes place 9 and according to the platform 3 on the scissor arms 8th ,

The height adjustment takes place via the spindle drive 5 , which is first assigned to each upper longitudinal leg 12 a spindle 14 having. These extend parallel to the associated longitudinal leg 12 at a distance from this in the inner area of the upper frame 9 stretched surface.

Both spindles 14 be by an electric motor drive 15 acted upon which drive 15 underneath the platform 3 at this or at the associated upper frame 9 is fixed. In the width direction of the scissor podium 11 considered is the drive 15 centered, approximately assigned to a narrow edge area. About not shown belt drives are the two sides of the drive 15 positioned spindles 14 together, driven in rotation.

The spindles 14 act with spindle nuts 16 together. Every travel shoe 10 and thus each of the upper frame 9 associated end of a long scissor arm 8th' is such a spindle nut 16 assigned, the spindle nuts 16 a longitudinal side, ie associated with an upper longitudinal leg 12 adapted to the respective spindle portion have opposite threads. The spindle nuts 16 are, as in particular from the representations in the 5 and 7 to recognize, tubular with an end stop 17 in the form of a to the pipe section 18 attached, radially projecting disc.

The spindle nut 16 interspersed with their pipe section 18 one on the associated travel shoe 10 fastened, perpendicular to this inwardly extending driver 19 , which on the abutment end of the spindle nut 16 opposite side a guide sleeve 20 for the penetrating spindle nut 16 or their pipe section 18 wearing.

On the guide sleeve 20 opposite side of the driver 19 are management staffs 21 attached. These extend parallel to the spindle axis x in diametrical opposite position and enforce the leadership stabilization of the spindle nut 16 their stop 17 in the radially projecting area. Accordingly, the spindle nut 16 with her stop 17 along the guide bars 21 relative to the travel shoe 10 along the spindle axis x displaced, this path is limited between the driver 19 of the travel shoe 10 and end of the guide rods 21 provided stop sections 22 , That's the spindle nut 16 opposite the traversing shoe to be towed 10 provided with a freewheel.

That the stop 17 opposite end of the spindle nut 16 has the spindle on both sides 14 flanking outriggers 23 on, on which transverse to the spindle axis x about a rotational axis y rotatably mounted driving rollers 24 are arranged. This with respect to the spindle 14 outwardly facing carrier rollers 24 serve to act on the underframe 2 rotatably mounted lower gripping lever 25 , Each spindle nut 16 and thus every travel shoe 10 and the associated scissor arm 8th is such a lower grip lever 25 assigned to the frame side.

The lower grip lever 25 is on the base 2 around a parallel to the axis of rotation y of the drive rollers 24 and thus axis of rotation z extending transversely to the spindle axis x, wherein the lower sub-lever is further supported 25 consists essentially of two spaced apart in the axial direction L-limb sections, which on the one hand by the physical axis of rotation in the L-section and the other by a connecting rod 26 in the area of the free ends of an L-leg 27 connected to each other. This L-thigh 27 lingers in a basic position of the scissor podium 1 , ie in the Einklappstellung as shown in FIG 2 essentially in a horizontal orientation. The adjoining L-thighs 28 extend perpendicular to the L-legs 27 ; have accordingly in the basic position substantially vertically upward.

While the L-thighs 27 As surface components are formed, the L-legs 28 formed in the illustrated embodiment of square tube sections.

The lower grip lever 25 are in the base frame 2 in the Einklappstellung the scissor podium 1 adjacent to the associated scissor arm 8th' placed further, with the two extending across the width of the scissors podium 1 opposite lower grip lever 25 via a facing lower L-leg 27 connecting driving rod 29 are connected, which proves to be particularly advantageous in terms of a desired synchronization.

The two L-thighs 27 of the lower grip lever 25 stabilizing connecting rod 26 is single ended over the associated L-leg 27 extended, for forming a cylindrical support portion 30 with respect to the connecting rod 26 enlarged diameter. This support section 30 is in overlap with the associated scissor arm 8th' assigned its bottom positioned.

Starting from a basic position as shown in 2 , Which of the fully lowered position of the scissors pedestal 1 corresponds, there is a lifting of the platform 3 as follows:
If the pedestal displacement takes place from an intermediate position, an unlocking of a pedestal latching and securing locking bolts in the unlocked position is first required. Is also the basic position of the podium 1 in which, if necessary, the platform 3 on the base 2 supported, rest assured, so here is a corresponding manual intervention before lifting necessary.

By commissioning the drive 15 be the two spindles 14 set in rotation about their spindle axes x, which by the partially opposite thread formation to a respective outward in the direction of the narrow sides directed linear motion of the associated spindle nuts 16 leads. Due to the described initial freewheel of each spindle nut 16 This linear displacement initially does not act directly on the associated scissor arm 8th' , Rather, by the onset of linear displacement of the spindle nut 16 about their driving roles 24 the associated lower grip lever 25 pivoted about the axis z, which in turn on the support section 30 a first lifting of the associated scissor arm 8th' causes. The associated spindle acts accordingly 14 or the spindle drive 5 initially only indirectly on the scissor arm 8th' one.

The scissor arm aligned in the folded-in position approximately on a horizontal 8th' is due to this first lifting over the associated lower grip lever 25 clearly raised from the horizontal, including an angle alpha of about 10 ° to the horizontal. Only with exhaustion of the existing freewheel, after which the spindle nut side stop 17 against the driver 19 blocking occurs, the direct entrainment of the travel shoe takes place 10 via the spindle nut which continues to move along the spindle axis x 16 , what to further hiring the associated scissor arm 8th' up to a maximum vertical position of the platform 3 leads.

The lower grip lever 25 are by means of the base 2 anchored tension springs 31 burdened in the Aufschwenkstellung. As a result, the lower grip levers remain 25 in the course of the erection movement after leaving the lower grip lever 25 Spindle nuts placed in this position 16 in this position, to resume the driving rollers 24 carrying sections in the course of a lowering of the platform 3 , Here are the lower grip lever on the drive rollers 24 the spindle nuts 16 by applying the L-leg 27 against the force of the tension springs 31 back to its starting position with approximately horizontally oriented L-legs 27 relocated.

The selected height position of the platform 3 is definable. For this purpose, first have the upper longitudinal leg 12 on the inner, the traversing shoes 10 facing sides detent openings 32 in which a transverse to the direction of extension of the longitudinal leg 12 sliding displaceable locking bolt 33 enters for determination. In every travel shoe 10 is such a locking bolt 33 slidably supported. For passage is in the area of the shoe-side sliding portion 11 another detent opening 34 provided, which for finding the detent position in accordance with the frame-side detent openings 32 to bring is.

Each locking bolt 33 can in the outward direction, ie in the direction of the associated longitudinal leg 12 are under spring tension. The retraction position of the locking bolt 33 is, for example, electromechanically accessible.

This embodiment allows the advantageous possibility, from a certain altitude of the platform 3 the spring-loaded locking bolt 33 in the course of the linear displacement of the travel shoe 10 to drag along along the facing frame top such that upon reaching the next frame-side detent opening 32 the locking bolt 33 automatically dives into this and determines the altitude now found.

For controlling the spindle drive 15 Platform is a tool access opening 35 intended. Through this can be a tool 36 For example, in the form of a hex wrench in a rotatable about a vertical switching cam 37 be introduced. Depending on the direction of rotation is via the switching cam 37 one of two switches 38 activates what either the command to raise or the command to lower the platform 3 entails. Also can via these switches 38 with intended lowering of the platform 3 the locking bolt 33 of every travel shoe 10 be held in the retraction position, so that when lowering no automatic locking can be done.

Alternatively, with a tool 36 or the like also under the platform 3 provided switching cam are moved vertically to achieve this different switching / pressure levels.

To the stability of the scissor podium 1 even with a low vertical orientation of the platform 3 to ensure are on the narrow edge sides of the scissor podium 1 auxiliary supports 39 intended. These are spaced apart the corner areas on the upper narrow frame 40 hinged. The relevant axes of rotation v extend parallel to the spindle axes x.

The associated ends of the auxiliary supports 39 passing axle body 41 are held in on from the upper narrow frame 40 suspended tabs 42 ,

In the area of the free end is any auxiliary support 39 near the outer rounded corner area with a rotatably arranged on the inside roller 43 Mistake. By means of this, the respective auxiliary support is supported 39 in the Einklappstellung as shown in 12 on one on the lower frame cross leg 7 applied running section 44 from.

In the Einklappstellung are the auxiliary supports 39 a narrow edge side of the scissor podium 1 facing each other pivoted about the axes v in the direction of an approximately engaging horizontal.

From this Einklappstellung according 12 Out in the course of upward shift of the platform 3 the auxiliary supports 39 on the one hand by its own weight, on the other hand by attack from the upper narrow frame 40 anchored tension springs 35 , which on the auxiliary supports 39 attack, pivoted in the direction of your vertical orientation under sliding of the associated roles 43 on the running sections 44 , Is the vertical orientation of the auxiliary supports 39 reached, hit the rollers 43 stop limiting against an axis-near edge of a underframe arranged releaser 46 at. The platform 3 Based on this, the auxiliary supports 39 in addition to the scissors on the base 2 from. This support position is preferably a height position of the platform 3 , in which the Abstemmstellung the scissor arms 8th through the lower grip lever 25 already left. The height of this support position depends on the selected length of the auxiliary supports used 39 ,

To the latter in turn from your vertical position for lowering the platform 3 to pivot back to the basic position, it is necessary first, the platform 3 so far raise that under overflowing the swivel on the undercarriage 2 fastened releaser 46 the roles 43 the associated auxiliary supports 39 in an area above the release button 46 arrive (cf. 14 ). Every releaser 46 has a pan-like depression on the top side 47 on. This is where the role comes from 43 the auxiliary support 39 during the subsequent lowering of the platform 3 a, what a rotational drive of the releaser 46 against the power of the releaser 46 against the undercarriage 2 preloading tension spring 48 causes. Following this dragging the release 46 becomes the auxiliary support 39 vorverschwenkt toward the Einklappstellung such that the associated role 43 again to the sliding support on the running section 44 of the undercarriage 2 occurs. The further lowering of the platform 3 causes an increasing collapse of the auxiliary supports 39 releasing the associated release button 46 , which latter afterwards again into their starting position according to the representation in 13 Swing back.

The 18 to 24 show a second embodiment of a pedestal 1 , which is essentially a pedestal 1 The first embodiment has corresponding structure. So is this one with a base 2 and a platform 3 provided which platform 3 about a shearer shoot 4 can be raised and lowered.

Bottom of the platform 3 is in accordance with the embodiment described above each associated with a scissor drive 4 a travel shoe 10 arranged by means of a spindle 14 , which are also underneath the platform 3 arranged in a plane parallel thereto, is driven. Again, in every travel shoe 10 a locking bolt 33 arranged to form a locking bolt, which locking bolt 33 outwards, ie in the direction of the associated upper longitudinal frame 12 spring loaded. The spring providing this load is preferably a cylindrical spring, which is not shown in the drawings.

In the traversing shoes 10 facing cheek of the upper longitudinal frame 12 are according to the desired height positions a plurality of detent openings 32 intended.

The locking bolts 33 are backward with Bowden cables 51 connected. These are anderendig with a locking pin fuse 52 in connection.

The two an upper longitudinal frame 12 assigned travel shoes 10 carry over inwardly pointing outriggers 53 the ends of an open chain 54 , This is in the direction of an upper narrow frame 40 pulled and there in the immediate vicinity of this narrow frame 40 for vertical deflection about a rotatably mounted gear 55 guided.

The chain drive thus created 56 accordingly forms an upper strand 57 and a lower strand 58 , where the free end of the lower strand 58 with the boom 53 of which the deflection gear 55 carrying narrow frame 40 closer travel shoe 10 assigned.

The orbital plane of the chain drive 56 is vertically aligned, so perpendicular to the orientation of the platform 3 ,

The gear providing the deflection 55 is about a boom 59 at the one upper narrow frame 40 set and rotatable about an axis oriented transversely to the spindle axis.

On the chain 54 are several release parts 60 attached. These are hook-like in the illustrated embodiment laterally over the chain 54 shaped above.

These release parts 60 are unevenly spaced from each other on the chain 54 set, with the distances of the release parts 60 to each other the distances of the detent openings 32 in the upper longitudinal frame 12 correspond.

The locking bolt safety 52 is at the same upper narrow frame 40 underneath the platform 3 arranged as well as the gear 55 of the chain drive 56 , Here is a first on the narrow frame 40 fixed mounting part 61 intended. This initially offers a support wall 62 for the Bowden cable cases 63 ,

On the support part 61 is a swing boom on the underside 64 appropriate. The perpendicular to the plane of the platform 3 aligned pivot axis is denoted by s in the illustrations.

On the swing boom 64 is rotatably a bracket 65 attached. This takes the free ends of the bowden cable selenium 66 on.

Concentric with the pivot axis s is in the mounting part 61 a Werkzeugdurchgreiföffnung 35 provided by which by means of a corresponding tool 37 on the bracket 65 and about this on the swing boom 64 can be acted upon by the swing boom 64 and the bracket 65 to relocate to a secured pivot position.

This secured pivot position is, for example, in the 18 to 20 shown. In this runs in the illustrated embodiment of the swing boom 64 in space parallel alignment to the support part 61 , wherein the Bowden cable selenium 66 are curious. As a result, the locking bolts 33 in the travel shoes 10 withdrawn; remain correspondingly secured in a spring-loaded, to be activated triggering position.

The securing of the swivel arm 64 takes place in the area of his, the chain drive 56 facing free end. For this purpose, the swing boom 64 with a grid lift 67 Mistake. This works with a frame-side counter-locking 68 together. This is over an arm 69 pivotable on the facing narrow frame 40 mounted, with a pivot axis which is parallel to the space extending to the gear axis. A thigh spring 70 burdened the counter-lock 68 in the example in 22 shown locking protection position.

At the counter stop 68 is still a trigger arm 71 swiveling stored. Also, this pivot axis is parallel to the axis of the gear 55 ,

The trigger arm 71 carries in the area of his narrow frame 40 opposite free end on the chain drive 56 facing broadside a trigger 72 with a forward facing first ramp 73 and a rear ramp 74 , which are aligned approximately parallel to each other and an acute angle to a longitudinal edge of the release arm 71 lock in.

Approximately in the axis area grows perpendicular to the longitudinal extent of the release arm 71 from this a release boom 75 out, with a to the chain drive 56 facing away, but the associated counter-latching arm 69 facing projecting tripping pin 76 ,

The basic position of the triggering arm 71 is achieved by gravity.

Lifting the platform 3 takes place according to the first embodiment described above via the spindle drive 5 , where the driven spindles 14 each with one in the associated travel shoe 10 arranged spindle nut 16 cooperate, according to which from a lowered position out the first centrally located in side-by-side travel over the spindles 14 linear outwards towards the narrow frame 40 be relocated. About the associated scissor arms takes place from this linear displacement of the travel shoes 10 a putting up of the platform 3 ,

At the same time is about the travel shoes 10 the the release parts 60 having a chain 54 shifted so that the with the locking bolt-fuse 52 remotely located travel shoe 10 cooperating upper strand 57 extended and according to the with the the locking bolt-fuse 52 carrying narrow frame 40 facing travel shoe 10 cooperating lower strand 58 shortened, this by deflection over the gear 55 ,

The Untertertrumseitig provided release parts 60 in the course of chain shifting, pass through the area of the release arm-side release lug 72 ; occur here against the front ramp 73 , This is designed so that an admission by means of a Abschsicherungsteils 60 in the installation direction according to the arrow r a pivotal displacement of the release arm 71 counteracts a driving pivoting causes. Related to the 22 to 24 becomes this release arm 71 pivoted in the clockwise direction. The underside release lock 75 with the trigger pin 76 runs free, unaffected the Gegenrast 68 , Accordingly, the formed latch bolt fuse 52 in the course of the lifting movement of the platform 3 from the release part 60 or of several successively arranged Abschsicherungsteilen 60 run over. The in the travel shoes 10 spring-loaded via the Bowden cables 51 held stop bolts 33 remain in the retracted ready position.

Is the desired altitude of the platform 3 run over, ie is an altitude of the platform 3 achieved, which is preferably slightly above the desired altitude, so is the drive for the spindles 14 vice versa. Accordingly, a lowering of the platform 3 initiated, which in turn the return displacement of the travel shoes 10 causes each other. The chain will be the same 54 shifted back against the direction of the arrow r, namely in the direction of arrow r '.

In the course of this relocation of the chain 54 the next release part occurs 60 against the rear ramp 74 of the trigger 72 What the pivoting of the trigger arm 71 in - with reference to the illustration in 24 - Counterclockwise direction. The one on the release boom 75 arranged tripping pin 76 engages the counter-ratchet 68 having arm 69 , which in the course of the further, by applying the Entsichersteils 60 caused pivotal displacement of the release arm 71 a putting up of the arm 69 and concomitantly raising the counter-lock 68 opposite the grid elevation 67 of the pivoting boom 64 causes. As shown in 24 takes place due to the application of a release part 60 a knee lever-like arrangement of the trigger arm counter-latching combination against the action of the leg spring 70 ,

The now released swivel arm 64 pivots supported by a spring, not shown, which under Drehitnahme the Halterungsböckchens 65 a relaxation of the bowden cable selenium 66 causes (cf. 21 ).

Through the relieved bowden cable selenium 66 become the traverse shoe-side locking bolts 33 released for spring-assisted displacement thereof in the direction of the associated longitudinal frame 12 ,

The locking bolts 33 then enter either directly into the overlapped frame-side detent openings 32 or against the facing cheek of the longitudinal frame 12 in order to further lower the platform 3 in the next detent openings 32 retract.

The locking determination in the desired platform height position takes place automatically according to this embodiment, merely by changing the direction of travel of the platform from the lifting direction in a lowering direction. About the tool opening 35 can by means of an appropriate tool 37 on the bracket 65 and here on the swing boom 64 be acted, in particular for the provision of the pivot boom 64 in the locked basic position according to 18 According to which the platform 3 can be further lowered until the next rest secured height position.

By changing eg. The angle of the ramps 73 and 74 of the trigger 72 The arrangement can also be chosen so that when lifting the platform 3 a release of the locking bolt fuse 52 over the next release part 60 he follows; while lowering the platform 3 this backup is overrun.

According to the proposed automatic Verrastungsmöglichkeit can also a plurality of pedestals 1 as shown in 25 be raised in the simplest way. Especially via a remote control 77 ; here a radio remote control. About this remote control 77 Each pedestal can be individually controlled, including the remote control 77 in the illustrated embodiment, each one associated with a pedestal function key 78 having.

Also a groupwise control of pedestals 1 is possible by means of such a remote control.

As shown in 25 is a group of nine podium riders 1 to three groups of three podium rams each 1 set up in stages. First, a first group G ₁ of Podestböcken 1 selected via the corresponding function keys 78 and thereafter by means of another function key 79 raised until the platforms 3 these podium rams 1 above a desired height position. Thereafter, as described above, a lowering of the platforms 3 , triggered via the function key 80 the remote control 77 , As described here are the locking bolts 33 triggered, for entering the next detent openings 32 in the longitudinal frame 12 ,

With the groups G ₂ and G ₃ is the same procedure, ie in each case a raising in an elevated height position and subsequent lowering with automatic locking in the desired altitude.

The structure, for example, a stage or a podium, consisting of several such pedestal stands 1 is in particular by the possibility of control via a remote control 77 facilitated.

Alternatively to the illustrated embodiments, a retrofit kit may be present, which is provided for retrofitting a conventional scissors pedestal and at least one or more lower grip lever 25 , a drive motor 15 with spindle drive 5 and spindle nuts 16 , as well as drivers 19 for the scissor arms 8th the shearer 4 having.

Claims (31)

Method for motor-driven lifting of a scissor pedestal ( 1 ) or a plurality of scissor podests ( 1 ) for building a stage or a podium, wherein a scissor pedestal ( 1 ) on the bottom side a fixed base ( 2 ) and on the top side a platform ( 3 ), which by means of a shear drive ( 4 ) are height-adjustable, characterized in that for setting up a desired stage, the scissor platforms ( 1 ) are height-adjusted so far that the platforms ( 3 ) are located directly above a respectively desired latched height position and then individually or in relation to a group of pedestals a lowering of each scissor pedestal ( 1 ) or the group of scissor platforms ( 1 ) is made, wherein a locking bolt ( 33 ) is in a secured unlocking position, but is biased into the locking position or is in traversing starting position in a secure unlocked position and hydraulically, pneumatically or electrically on the locking bolt ( 33 ) can be acted upon, wherein further in the course of the lowering movement, the locking in the desired height position is carried out automatically or the platforms ( 3 ) are located immediately below a respective desired latched height position and then individually or with respect to a group of scissor podiums ( 1 ) a lifting of each scissors podium ( 1 ) or the group of scissor platforms ( 1 ), wherein in the course of the lifting movement, the locking in the desired height position is carried out automatically. A method according to claim 1, characterized in that the height adjustment by means of a spindle drive ( 5 ) and that by means of a spindle ( 14 ) of the spindle drive ( 5 ) directly on a travel shoe ( 10 ) is acted upon. Method according to one of the preceding claims, characterized in that in the non-activated state of the latching means of a spring tension in a Verrastungsstellung on a locking bolt ( 33 ) of the locking device is acted upon. Method according to one of claims 2 or 3, characterized in that for lifting the platform ( 3 ) first a scissor arm ( 8th ) of the shearer ( 4 ) and from the underframe ( 2 ) and then immediately thereafter by means of the spindle drive ( 5 ) on a scissor arm ( 8th ) is acted in the erection direction. Method according to claim 4, characterized in that with the same spindle drive ( 5 ) both the removal of the scissor arm ( 8th ) from the subframe ( 2 ) as well as the direct action on the scissor arm ( 8th ) is performed in the installation direction. Method according to one of claims 4 or 5, characterized in that the spindle drive ( 5 ) a spindle nut ( 16 ), which serve to pry off the scissor arm ( 8th ) against one on the underframe ( 2 ) rotatably mounted lower grip lever ( 25 ) moves. A method according to claim 6, characterized in that the lower grip lever ( 25 ) is mounted about an axis of rotation (z) which extends transversely to the direction of extension of the spindle axis (x). Method according to one of the preceding claims, characterized in that after reaching a first intended height of the platform ( 3 ) Auxiliary supports ( 39 ), which the platform ( 3 ) in addition to the scissor arms ( 8th ) on the subframe ( 2 ) is supported. Method according to one of claims 4 to 8, characterized in that the platform ( 3 ) in any case after reaching the direct action of the spindle drive ( 5 ) on a scissor arm ( 8th ) can be moved to predetermined height positions. Method according to one of the preceding claims, characterized in that two widths of the platform ( 3 ) opposite scissor arms ( 8th ) is acted upon. Method according to one of the preceding claims, characterized in that on two longitudinally of the platform ( 3 ) one behind the other scissor arms ( 8th ) is acted upon. Scissor pedestal ( 1 ) to build a stage or a podium by assembling with other similar scissor platforms ( 1 ), wherein on the bottom side a fixed base ( 2 ) and on the top side a platform ( 3 ) provided by means of a shearing drive ( 4 ) is height-adjustable and latchable, wherein the shearer ( 4 ) by means of a spindle drive ( 5 ) is acted upon for height adjustment, wherein further the shearer shoot ( 4 ) has a travel shoe, characterized in that by means of a motor-driven spindle ( 14 ) of the spindle drive ( 5 ) directly on the travel shoe ( 10 ), wherein the locking between the travel shoe ( 10 ) and the platform ( 3 ), and that in traversing starting position a locking bolt ( 33 ) is in a secured unlocking position, but is biased into the locking position or that the locking bolt ( 33 ) is in the traversing starting position in a secured unlocking position, and hydraulically, pneumatically or electrically on the locking bolt ( 33 ) is acted upon. Scissor platform according to claim 12, characterized in that the spindle ( 14 ) regardless of a platform elevation ( 3 ) at the same height as the travel shoe ( 10 ) is arranged. Scissor landing according to one of claims 12 or 13, characterized in that the spindle ( 14 ) together with the platform ( 3 ). Scissor platform according to one of claims 12 to 14, characterized in that a lower grip lever ( 25 ) is provided, which by grasping a scissor arm ( 8th ) first raises it to a first height. Scissor platform according to claim 15, characterized in that the same spindle drive ( 5 ) either the lower grip lever ( 25 ) as well as the scissor arm ( 8th ). Scissor landing according to one of claims 15 or 16, characterized in that the lower grip lever ( 25 ) rotatably on the subframe ( 2 ) is stored. Scissor platform according to one of claims 15 to 17, characterized in that the lower grip lever ( 25 ) is mounted about an axis of rotation (z) which extends transversely to the direction of extension of a spindle axis (x). Scissor platform according to one of claims 12 to 18, characterized in that the spindle drive ( 5 ) a spindle nut ( 16 ) having a driver ( 19 ) of the scissor arm ( 8th ) and to the driver ( 19 ) comes to a stop when the required raising of the scissors arm ( 8th ) is done. Scissor landing according to one of claims 12 to 19, characterized in that the underside of the platform ( 3 ) Auxiliary supports ( 39 ) are hinged when lifting the platform ( 3 ) pivot from a Einklappstellung in a support / vertical position. Scissor landing according to claim 20, characterized in that the auxiliary supports ( 39 ) at a selected height of the platform ( 3 ) an additional support against the underframe ( 2 ). Scissor landing according to one of claims 20 or 21, characterized in that an auxiliary support ( 39 ) when shutting down the platform ( 3 ) with one on the underframe ( 2 ) attached release ( 46 ) cooperating with the auxiliary support ( 39 ) pivoted so far that they then automatically when shutting down the platform ( 3 ) moves into the Einklappstellung. Scissor platform according to one of claims 12 to 22, characterized in that the end of a scissor arm ( 8th ) parallel to the platform ( 3 ) traversing travel shoe ( 10 ) is articulated. Scissor landing according to claim 23, characterized in that the travel shoe ( 10 ) Detent openings ( 34 ), which in selected positions with detent openings ( 32 ) of the platform ( 3 ) supporting frame ( 9 ), for locking a selected height position by locking pins ( 33 ). Scissor landing according to one of claims 12 to 24, characterized in that for unlocking the unlocking position, a derived from the drive movement for height adjustment moved release part ( 60 ) on the locking pin safety ( 52 ) acts. Scissor platform according to claim 25, characterized in that the release part ( 60 ) on a chain drive ( 56 ) is attached. Scissor platform according to one of claims 25 or 26, characterized in that a plurality of securing parts ( 60 ) is provided. Scissor platform according to claim 27, characterized in that the number of locking parts ( 60 ) corresponds to the number of possible detent positions. Scissor landing according to one of claims 25 to 28, characterized in that the release part ( 60 ) when booting or shutting down the platform ( 3 ) the locking bolt safety device ( 52 ) overflows. Scissor landing according to one of claims 25 to 29, characterized in that a release part ( 60 ) when shutting down or booting up the platform ( 3 ) the locking bolt safety device ( 52 ) triggers. Scissor platform according to one or more of claims 26 to 30, characterized in that by the horizontal movement of the travel shoe ( 10 ) a chain drive ( 56 ) is driven.

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