EP1285878B1 - Lifting platform, particularly mobile lifting platform - Google Patents

Description

The invention relates to a lift, in particular mobile lift according to the preamble of claim 1.

In lifting technology, in particular for commercial vehicles, for example according to document WO 98 30488 A, which discloses the preamble of claim 1, uses individual lifting platforms, to lift the commercial vehicles for repair and maintenance purposes. The lifts have load-receiving means, which, for example be attached to the wheels. In a three-axle Vehicle, for example, six lifts to the respective Wheels positioned. Following that, the individual mobile Lifting platforms connected by at least one supply line. These supply lines include power and / or control lines. In some cases, the supply lines can also be called Hydraulic or pneumatic hoses be formed. The supply lines be from a central supply station to a first Relocated lift. From there, a supply line with the second Lift connected. The supply lines are thus of Car lift led to lift until each lift with a supply line connected is. For maintenance and repair of vehicles is required that a workshop trolley or gearbox jack or the like in the work space or work area under the vehicle is positioned. By lying on the ground supply line is the accessibility is difficult or it exists when crossing the supply line the danger of damage. In addition there is there is a risk of tripping due to the supply lines lying on the ground for the workforce.

To avoid these dangers, it has been proposed so far, the supply lines to be mounted on a hall ceiling. The cable ends hang down from the ceiling and are at the individual lifts connected. This embodiment, however, has the disadvantage that the working area for the positioning of the lift by the of Ceiling drooping supply lines is determined. About that In addition, the installation of the supply lines on the ceiling is expensive and costly. When using the lifts, lie outdoors the supply lines back to the ground.

From US 3 289 868 A a lift system for containers has become known in which a platform is provided for receiving containers is, which receives in itself supply lines for the hydraulic fluid, to move the lifting columns up and down. These engage in appropriate Recesses in the continuous platform. This device is especially for vehicles for repair and maintenance purposes unsuitable because the closed platform formed by the Accessibility to the vehicle is not given.

The invention is therefore based on the object to a device create, through which the at least one supply line between two lifts in the work area is removed from the ground, leaving a unhindered and safe working under a lifted load or a vehicle is possible.

This object is achieved by the features of the claim 1 solved.

By the device according to the invention, which on the lift is attachable, during an upward movement of the lifting device the at least one supply line lifted off the ground, so that in an upper stroke position of the lifting device of the Workspace is freely accessible without being hampered by the at least one supply line is given. An additional drive not necessary. By connecting the device with the Lifting device or the lifting column of the lift can the device Advantageously operated or moved synchronously to the lifting movement become.

Due to the advantageous attachment of the device to the load handling device can be given a simple positioning, by which the supply line can also be arranged outside the lifting area.

According to an advantageous embodiment of the invention is provided that the device is rod-shaped and at an upper End has a cable guide.

As a result, the at least one supply line positioned elevated relative to the load receiving means, whereby the working space is freely accessible. The lifts are also in one large distance to each other can be arranged, whereby, for example, a length of ten meters through the at least one supply line between the two Lifting platforms is to bridge. By the opposite to the load handling device increased cable management of the at least one supply line through the device Ensures that even with a slight sagging of the supply line in the middle area between the two lifts a sufficient Passage height created under the raised supply line becomes. By preferably rod-shaped configuration of the device can be given a simple and effective design. The device can also have other geometric shapes that allow the at least one cable guide can be positioned relative to the load receiving means is.

It can be advantageously provided that the device has a connection point to the load-carrying means and a branch for several cable guides comprises or for receiving further components or components, such as light, container for tools or the like formed is.

The arranged at the upper end of the preferably rod-shaped device Cable guide is preferably designed as a clamping device. Thereby can two functions are combined into one device, which in turn creates one Simplification and cost-effective design is given.

The cable guide is designed for example as a V-shaped fork, whereby the Supply line by its own weight independently in the V-shaped fork is fixed. This clamping device allows easy insertion of at least a supply line and thus a fast connection and coupling with the other lifts. In addition, this embodiment the advantage that a clamping without damaging the outer shell of the Supply line is enabled. Furthermore, this advantageous embodiment for receiving different diameters of the supply lines suitable without requiring any specific adaptation. Also is allows this V-shaped fork to clamp the supply line under low tension between two spaced apart devices allowing, causing sagging of the supply line in particular is reduced when bridging larger distances.

According to a further advantageous embodiment of the invention is provided that at least one further cable guide for the at least one supply line on the load-handling device or on the device below the connection point, is preferably provided in the region of the lifting device. The supply line is during the up and down movement of the lifting device additionally guided so that the supply line outside the range of motion of the lifting device is held. Furthermore, it prevents that in the positioning of the lifting device in a lower Position the at least one supply line out of the preferably as V-shaped Fork trained cable guide triggers. The between the lifts arranged portion of the supply line is substantially horizontal extending provided and is in the clamping connection, for example, 90 ° diverted. As a result, the clamping effect can be additionally supported. It will The lower cable guide also ensures that an inadmissible tensile stress does not occur and acts on the junction. When connecting the Supply line to the control unit is already from the upper cable guide via the lower cable guide to the connection point a minimum distance between the clamping device of the device and the connection point, which is larger than the required free length at maximum stroke. simultaneously the supply line can be additionally guided during the lifting movement.

Alternatively it can be provided that the at least one further cable guide also for fixing the cable or the supply lines, for example by clamping, are formed. In this case, the at least one first or upper cable guide on the device only for guiding or deflection be formed of the cable or the. In addition, clamping or Fixing properties can be provided.

Furthermore, it may alternatively be provided that in the use of a cable guide on the load-handling device or on the device below the connection point, which a clamping function and preferably a deflection and / or guide function has a further cable management can be omitted.

The device is advantageously provided releasably in the load receiving means. As a result, the device according to the invention can optionally be provided be, or by other adapted for special applications devices be replaced. Alternatively, it can also be provided that the Device attachable to a fastening device of the lifting device is.

The supply line is connected to a control unit at a connection point. The connection point is advantageously in an ergonomic good accessible area for the workforce. The height of the junction Seen from the bottom corresponds advantageously half the maximum stroke. This may allow the free route the supply line from the junction to a lower position of the Lifting means formed substantially equal to an upper position is. As a result, simple geometric conditions are given which of the enable further safe operation.

The device advantageously has a minimum height, which at least corresponds to the ground clearance of vehicles. This allows that the ground clearance is not affected by the raised supply lines is.

Furthermore, it may be advantageously provided that the device at least is slightly deflected. This can ensure that the Length of the at least one supply line by the amount of deflection can be extended at short notice, whereby the supply line with a certain amount of travel is yielding due to a load. At the same time, when connecting the supply line from one to the other Lift a bias voltage can be generated between the two devices whereby the amount of sagging over the distance to be bridged reduced becomes.

Further advantageous embodiments of the invention are in further claims specified.

Figur 1

eine perspektivische Ansicht einer mobilen Hebebühne mit einer erfindungsgemäßen Vorrichtung an einem Lastaufnahmemittel in einer unteren Position,

Figur 2

eine perspektivische Ansicht der Hebebühne gemäß Figur 1 in einer Arbeitsposition des Lastaufnahmemittels,

Figur 3

eine schematische Seitenansicht von zwei Hebebühnen vor einer Hubbewegung in eine Arbeitshöhe,

Figur 4

eine schematischen Seitenansicht von zwei Hebebühnen in einer der Arbeitsposition,

Figur 5

eine schematische Darstellung für eine Positionierung von Hebebühnen und deren Verbindung durch Versorgungsleitungen,

Figur 6

eine schematische Darstellung für eine Positionierung von Hebebühnen mit einer alternativen Verbindung durch Versorgungsleitungen und

Figur 7

eine schematische Darstellung für eine Positionierung von Hebebühnen mit einer weiteren alternativen Verbindung durch Versorgungsleitungen.

In the following description and the drawings, a preferred embodiment of the invention is described in detail. It shows:

FIG. 1

a perspective view of a mobile lift with a device according to the invention on a load-receiving means in a lower position,

FIG. 2

3 is a perspective view of the lifting platform according to FIG. 1 in a working position of the lifting device;

FIG. 3

a schematic side view of two lifts before a lifting movement in a working height,

FIG. 4

a schematic side view of two lifts in one of the working position,

FIG. 5

a schematic representation of a positioning of lifts and their connection by supply lines,

FIG. 6

a schematic representation of a positioning of lifts with an alternative connection through supply lines and

FIG. 7

a schematic representation of a positioning of lifts with another alternative connection through supply lines.

In Figure 1, a lift 11 is shown, which is suitable for mobile use is. The lift 11 has a base frame 12, preferably with a Steering chassis on. On the base frame 12, a lifting unit 13 is provided, which comprises a lifting column 14, in which a drive unit is provided is. The drive unit can be electro-hydraulic, hydraulic or mechanical, For example, be provided by a spindle drive or the like. Through this Drive is a load-receiving means 16 from a rest position 17 in a Work position 18 converted according to Figure 2. At the lifting column 14 is a control unit 19 is provided, which has a connection point 21 laterally.

The load-receiving means 16 is formed for example as a wheel gripping element. This allows the mobile lift directly to a vehicle to be lifted be positioned, wherein the Radgreifelement on the or the tire the vehicle attacks.

In a two-axle vehicle 22, as for example in FIGS. 3 and 4 is shown, two lifting platforms 11 are arranged on each axis. To the positioning of the lifts 11 to the vehicle 22 are the lifts 11 interconnected by supply lines 23. The supply line 23 serves for example for power supply and has control lines on.

In FIG. 5, for example, a first possible arrangement and installation of Lifting platforms 11a to 11f shown. In this arrangement, for example, the Lifting platform 11a provided as a main lift, which has a Zentratsteuerkasten 20 has. This can be provided there firmly, for example at the Lifting column or be attached removably. The basic power supply takes place from an external connection to the central control box 20. This central control box 20 is in turn connected to the controller 19 of the lift 11a.

In Figure 5, an open ring connection is shown, in which the lift 11a is connected via a supply line 23a with the lift 11b. From There from another leads a control line 23 b to the lift 11 c, etc. to the Control line 23e is connected to the lift 11f. The control lines are preferably identical in their length. There may also be two, three or more different in length supply lines 23 used to provide the appropriate length for the spaced lifts. In Figure 5, the lifts 11a to 11f for receiving a three-axis Vehicle shown. It is understood that this arrangement for two, four or any multiple number of lifts applies.

FIG. 6 shows an alternative arrangement to FIG. 5. In this arrangement In addition, the supply line 23f is provided, which is a closed Ring connection forms. Depending on the tax systems, the one or other connection according to Figure 5 or 6 are used.

FIG. 7 shows a further alternative activation and supply of the lifting platforms 11a to 11d provided. For example, four lifts 11a to 11d provided for lifting a two-axle vehicle. The central control 20 is arranged separately from the lifting platforms 11a to 11d. From the central control 20 leads a control line 23a to the lift 11a, to the lift 11a carries a control line 23b, etc. Advantageously, in such Supply lines 23a to 23d, also referred to as stub lines be provided that the device 24 when lifting the Lifting means 16, the supply lines 23a and 23b lifts. Both Supply lines 23c and 23d is provided on the one hand Devices 24, which are arranged on the lifting platforms 11a and 11b, as also raised by devices 24 on the lifts 11c and 11d so that in turn the entire workspace is freely accessible with Exception of the area between the lift 11a and 11b for Connection of the control lines to the central controller 20 is provided.

After each lift 11 connected to at least one supply line 23 is, by actuation of the elevators 11, the vehicle 22 from the Rest position 17 are raised to a working position 18. The working position 18 allows a person to stand or walk under a vehicle 22 can. This entire area as well as between the lifts 11 formed areas form the working space.

On the load receiving means 16, the device 24 according to the invention is provided. The device 24 is rod-shaped and runs parallel to Lifting column 14. The device 24 may include a certain length or in the length, for example, by a telescopic training different be adjustable in length. The device 24 is preferably spaced from the Lifting column 14 is provided at an outer edge region of the load-receiving means 16. This can prevent that the supply line 23 in Area between the load-receiving means 16 and the lifting column 14 jammed.

The device 24 is detachable by a connector 26 at one of the Load receiving means arranged attachment 27 is provided. This allows the Device 24 can be used optionally. Alternatively it can be provided that the device 24 has a quick-fastening unit, so that existing and already delivered lifts by the device according to the invention 24 can be retrofitted.

The device 24 has, for example, a height which in the region of Connection point 21 of the control unit or slightly lower. This is one given ergonomic working height, as seen for example in FIG is to the supply lines 23 to a cable guide 28, which at the top End of the device 24 is provided to install. The cable guide 28 is V-shaped configured, for example, a round steel, which with and without Coating may be formed. This cable guide 28 is rotatable in the Device 24 was added. Alternatively, the cable guide 28 can be fixed to the device 24 and these rotatably mounted in the attachment 27. This is allows the cable guide 28 in any angular position of the lift 11 may be aligned with the next following lift 11. The cable management 28 is due to the configuration of a V-shaped fork simultaneously designed as a clamping device. Alternatively it can be provided that, for example a cable guide 28 formed by a sliding surface or a roller is and additionally has a clamping element or a clip connection or the like, whereby the supply line 23 after a Tightening or tightening between two devices 24 in easier and faster Way is fixed. It can thereby be achieved that the at least one Supply line 23 is not or only slightly sags, as for example is shown in Figures 3 and 4.

In one embodiment of a V-shaped fork as a cable guide and clamping element is further advantageously below the junction 21 a further cable guide 29 is provided. This can be on the device 24, at the Attachment 27 or attached to the load-receiving means 16. This cable guide 29 holds the clamping in the embodiment shown in Figure 1 a clamping device upright, provided that the connection point 21 is higher than the cable guide 28 is positioned. In addition, the cable guide 29 has the Advantage on that during the lifting movement, the free distance of the supply line 23 is guided between the connection point 21 and the cable guide 28.

The device 24 may advantageously be variably adjustable in height. As a result, for example, the upper cable guide 28 straight in the position be set that this is at least equal to or higher than the ground clearance of the Vehicle is positioned. As a result, even with slightly sagging supply line 23, the passage area be free, as shown in Figure 4 is.

The device 24 may alternatively be in the lower region above the attachment 27 have an adjustable tilting joint. This can, for example, at a unintentional deflection in the supply line 23 a deflection be given to the device 24, whereby the distance to the height of the Device 24 extended. Instead of a tilting joint can also another Unit be provided on the device 24, which on the one hand after positioning the lifts and then the supply line 23 a tensile stress on the supply line 23 so that it does not sag and in the case of an unintentional deflection, a corresponding length of the Supply line 23 releases as a strain relief. Furthermore, alternatively be provided that the upper cable guide 28 detachable device 24th is provided so that these interchangeable with other cable guides or also in case of emergency, a further distance to supply line releases.

The supply line 23 is at the connection point 21 by a plug connection or fastened by a screw connection.

Depending on the design of the lift 11 may also be provided that several supply lines laid from lift 11 to lift 11 become. The device 24 is accordingly adapted and / or it is several devices 24 are provided for receiving the lines. In particular Cases, the supply line can also be used as hydraulic or pneumatic hose be designed to operate the individual lifts 11.

Alternatively it can be provided that on the load-receiving means 16 a kind Linkage is provided, which at least one horizontal connecting rod between the left and right device 24. At this linkage can each near the devices 24, a connection point for between two to be connected elevators 11 can be arranged supply lines 23rd be provided, these connection points, each with a permanently installed Line section are connected to the control unit 19. Thereby becomes the required distance for the stroke of fixed cable sections adapted to each stroke of the lift. To connect the Mobile lift, the required hand movements are further reduced. The Supply line 23 is at least slightly tensioned and at the two terminals the respective device 24 connected.

Alternatively, it may also be provided that on the load-receiving means 16 instead of two devices 24 only one device with one or more Cable guide is provided for two or more supply lines.

Alternatively, the device 24 can also be moved up and down along the lifting column 14 be provided. Advantageously, the device 24 via a on the load-receiving element provided actuator or a slider moved up and down in accordance with the lifting movement of the lifting device. The arrangement of the device 24 may be such that only the Upward movement is driven and the downward movement of the device by gravity itself or driven both directions of movement are. The device arranged on the lifting column can be slidable into one another Telescopic rod be formed and the slider actuates the telescopic rod. Alternatively, a guide can also be provided on the lifting column, in which at least the cable guide 28 is moved up and down.

It can also be provided that on the hub itself a device 24 is provided to receive the supply line according to the invention. The device 24 may for example be provided horizontally be so that the cable guide 28 advantageously close to a left and right outer end and above to the respective corner region of the lifting device are provided in alignment.

Furthermore, alternatively, in the transition region between the Hubstempel and the wheel gripper, the device 24 may be provided, which is perpendicular may extend upward to a cable guide 28 for a two-sided connection to allow, such as the lifts 11a to 11f as shown in FIG 6. Furthermore, it can be provided that from this one attachment point in the transition area in each case at least two cable guides left and right in or near the corner areas of the lifting gear and opposite These corner areas are arranged elevated to at least above the ground clearance the vehicles to be arranged.

The inventive arrangement of at least one supply line 23 on a mounted on the load receiving means 16 device 24 is a good accessibility in the work area of several lifts 11 given as is apparent from Figure 4, for example.

Claims (19)

1. A lifting platform for lifting loads, vehicles, or the like, in particular a mobile lifting platform, comprising a base frame (12), a lifting unit (13) which moves a load receiver (16) up and down, and at least one supply line (23), which is provided between at least two lifting platforms (11), wherein at least one device (24) receiving the at least one supply line (23) is installed on the load receiver (16), which lifts the at least one supply line (23) which runs between two lifting platforms (11) by lifting the load receivers so that in an upper lifting position of the load receiver (16) a working region between the lifting platform (11) is freely accessible.
2. The lifting platform according to claim 1, characterized in that the device (24) is constituted in a rod shape and comprises a cable guide (28) at an upper end.
3. The lifting platform according to claim 2, characterized in that the cable guide (28) arranged at an upper end of the device (14) is constituted as a clamping device.
4. The lifting platform according to claim 3, characterized in that a releasable plug connection is provided in the upper region of the device (24) for receiving the cable guide (28).
5. The lifting platform according to claim 3 or 4, characterized in that the cable guide (28) is constituted for receiving the at least one supply line (23).
6. The lifting platform according to one of the claims 3 to 5, wherein the cable guide (28) is constituted as a V-shaped fork and the supply line (23) is fixed automatically by its own weight in the cable guide (28) constituted as a clamping device.
7. The lifting platform according to one of the proceeding claims, characterized in that one further cable guide (29) is provided on the load receiver (16) or on the device (24) below a junction point (21), preferably in the region of the load receiver (16).
8. The lifting platform according to claim 7, characterized in that the distance between the junction point (21) and the further cable guide (29) in an inoperative position (17) of the load receiver (16) is equal to or greater than the distance between the junction point (21) and the lower cable guide (29) in a working position (18) of the load receiver (16).
9. The lifting platform according to one of the proceeding claims, characterized in that the distance between the cable guide (28) and the load receiver (16) is at least equal to or greater than a ground clearance of a vehicle.
10. The lifting platform according to one of the proceeding claims, characterized in that the cable guide (28) is arranged to be rotatable with respect to the device (24) or the device (24) is arranged to be rotatable with respect to the load receiver (16).
11. The lifting platform according to one of the proceeding claims, characterized in that at least one junction point (21) for at least one supply line (23) is arranged substantially at half the height of a maximum lifting path.
12. The lifting platform according to one of the proceeding claims, characterized in that the at least one device (24) is variable in height and is preferably constituted in telescopic form.
13. The lifting platform according to one of the proceeding claims, characterized in that the device (24) is at least slightly deflectable and receives the at least one supply line (23) between two lifting platforms (11) under at least slight tension.
14. The lifting platform according to one of the proceeding claims, characterized in that the at least one device (24) is releasably fastened to a load receiver (16).
15. The lifting platform according to claim 1, wherein the device (24) has a pivot joint in a lower region near a fastening unit of the load receiver (16).
16. The lifting platform according to one of the proceeding claims, characterized in that an appliance is provided on the device (24) and is constituted for strain relief and for tightening of the at least one supply line (23).
17. The lifting platform according to one of the proceeding claims, characterized in that the load receiver (16) is constituted as a wheel gripper for motor vehicles.
18. The lifting platform according to one of the proceeding claims, characterized in that the base frame (12) has a traveller, in particular a steerable traveller.
19. The lifting platform according to one of the proceeding claims, characterized in that the lifting unit (13) has an electrohydraulic, hydraulic, or mechanical drive.

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