DE102006062867B4 - Liftgate - Google Patents

Abstract

In the case of a tail lift, in particular for a vehicle, having a platform (27) which is connected via at least one support element (26.1, 26.2) to a lifting / lowering device (1), the platform (27) being connected to the support element (26.1, 26.2) an axis of rotation (B) and the support element (26.1, 26.2) with the lifting / lowering device (1) forms a pivot axis (A) and the rotation axis (B) and / or pivot axis (A) a motor (13, 13.1) and at least one transmission (12.1 to 12.4) is assigned to the motor (13, 13.1) and / or the transmission (12.1 to 12.4) to be assigned a receptacle for a torque over which the weight of a load is determined.

Description

The invention relates to a tail lift, in particular for a vehicle, with a platform, which is connected via at least one support member with a lifting / lowering device, wherein the platform with the support element forms a pivot axis and the support member with the lifting / lowering device a pivot axis and the axis of rotation and / or pivot axis, an engine and at least one gear are assigned

State of the art

Tail lifts are known in a variety of forms and designs and on the market. Their drive is usually hydraulic, the hydraulics of the tail lift is usually connected to the hydraulic system of the vehicle. This hydraulics had several disadvantages, as in the DE 10 2006 000 994 A1 is described. That's why this one beats DE 10 2006 000 994 A1 in that the rotary axes and / or the pivot axis are associated with a motor and corresponding gear.

Out DE 10 2006 000 994 A1 It is further proposed to deduce from the motor current interrogated by the motor the weight load which has been lifted by the lifting platforms disclosed therein. However, this motor current can only be used to a limited extent for the determination of the load to be determined, since more power can be interrogated by the motor during high-speed lifts, so that this leads to a distortion of the weight of the load to be lifted. This may also result in the controller assuming overloading of the lift and then stopping the lift operation, even though there would be no risk of increased load on the lift.

tasks

Object of the present invention is to make the handling of the liftgate safer and to increase the functionality.

Solution of the tasks

To solve the tasks leads that the engine and / or the transmission is associated with a transducer for a torque over which the weight of a load is determined.

For example, it is thought to associate a torque transducer with the transmissions, in which case the transmissions are connected via a signal line to a corresponding electronic device.

The electronic device is designed according to a preferred embodiment for translating the torque values into weight values, so that in this simple manner the weight of a load standing on the tail lift can be determined. This is a very significant advantage of the present invention. Above all, it is also possible to determine an overload of the tail lift and in this case interrupt another operation of the tail lift or lock.

Furthermore, it is thought to not only determine the weight of goods, but also hold charge cycles, read or even pass, for example, over the Internet to a central office. In this case, the central office can determine how long, for example, a discharge will still take and when the availability of the vehicle can be expected again. These are only a few advantages of the present invention, many more are conceivable and will be shown in practice.

Above all, it is also thought that elements for personal protection are located on the tail lift according to the invention. This may include, for example, a motion detector that detects when a person is below the platform. Such a motion detector can work with ultrasound or infrared.

list of figures

• 1 eine Draufsicht auf Teile einer geöffneten Hub-/Senkeinrichtung einer erfindungsgemässen Ladebordwand;
• 2 eine Seitenansicht der Hub-/Senkeinrichtung gemäss 1 ohne seitliche Tragelemente;
• 3 eine Draufsicht auf ein geöffnetes Teil der erfindungsgemäßen Ladebordwand im Bereich der Plattform;
• 4 eine Seitenansicht des Bereichs der Plattform gemäss 3 zusammen mit einem Teil der Plattform;
• 5 eine Draufsicht auf ein Profil zur Halterung eines Notantriebs.

Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawing; this shows in

• 1 a plan view of parts of an open lifting / lowering device of a tail lift according to the invention;
• 2 a side view of the lifting / lowering device according 1 without lateral support elements;
• 3 a plan view of an open part of the liftgate according to the invention in the region of the platform;
• 4 a side view of the area of the platform according to 3 together with part of the platform;
• 5 a plan view of a profile for holding an emergency drive.

According to the 1 and 2 has a lifting / lowering device 1 a pipe 2 on which about holder 3.1 and 3.2 is connected to a chassis bottom not shown in detail of a vehicle. This pipe 2 consists of two pipe shell profiles 4 and 5 which are interconnected. For releasable connection forms the pipe shell profile 5 a longitudinal groove 33 out, into which a beaded piping 6 of the other pipe shell profile 4 intervenes. Compared to this connection form both pipe shell profiles 4 and 5 one stop edge each 7.1 respectively. 7.2 from, which can be screwed against each other by appropriate screw.

Into the inner wall of the pipe 2 or the pipe shell profiles 4 respectively. 5 are internal gears 8th formed. These work with external teeth 9 together, which in a coat 10 a transmission housing 11 are formed. The gearbox 11 is thus rotatable with the tube 2 or the pipe shell profiles 4 and 5 connected.

In 1 it can be seen that in the pipe 2 two gears 12.1 and 12.2 are located. Between both gears 12.1 and 12.2 is an engine 13 arranged, which via corresponding rotary shafts, which are not further identified, with the gears 12.1 and 12.2 connected is.

In 2 is a chamber 14 recognizable, the part of the pipe shell profile 5 is. In this chamber 14 sits an emergency drive 15 that allows the gears 12.1 and 12.2 to operate manually provided the engine 13 fails. For this purpose is on a rotary shaft, which is also part of a pivot axis A is a gear 16 put on, which of a toothed belt 17 is entwined. Opposite the gear 16 the timing belt wraps around 17 another gear 18 which is on a torsion bar 19 seated. This torsion bar 19 is in a sleeve 20 taken part of a profile 21 is that in 5 is displayed enlarged. To the sleeve 20 on the one hand is a fork 22 molded, on the other hand, two clip strips 23.1 and 23.2 , In position of use takes the fork 22 a longitudinal strip 24 on while the clip strips 23.1 and 23.2 between two guide strips 25.1 and 25.2 are used.

From the outside beat on both sides of the tube 2 supporting elements 26.1 and 26.2 to the gearbox 12.1 and 12.2 on, wherein the support elements 26.1 and 26.2 through the engine 13 over the gears 12.1 and 12.2 around the pivot axis A to be moved. With them becomes a platform 27 as they are in the 3 and 4 is shown, raised or lowered. These are the support elements 26.1 and 26.2 each with a gearbox 12.3 respectively. 12.4 connected, between which a motor 13.1 is arranged. Between the engine 13.1 and the transmission 12.3 is an above-mentioned rotating shaft 28 recognizable on the one gear 16.1 a second emergency drive 15.1 seated. With this emergency drive 15.1 can the platform 27 manually around a rotation axis B to be turned around.

Otherwise, the two gears sit 12.3 and 12.4 also in a tube 2.1 which of the platform 27 assigned and optionally in one piece with the platform 27 connected is. This tube is preferably made of two pipe shell profiles 29 and 30 that are interconnected. The connection takes place on the one hand at a weld 31 on the other hand on a screw connection 32 , The emergency drive 15.1 is in a chamber 14.1 that are part of the pipe shell profile 30 is.

The operation of the present invention is as follows:

First, the lifting / lowering device 1 assembled and mounted on a chassis floor of a vehicle. For this purpose, the two pipe sections profiles 4 and 5 joined together by the beaded piping 6 in the longitudinal groove 33 is used. The production of the pipe 2 is done by screwing together the stop edges 7.1 and 7.2 , Before or after screwing together, the engine can 13 and the gears 12.1 and 12.2 from the side into the pipe 2 be inserted, the external teeth 9 on the coat 10 of the gearbox 11 in the internal toothing in the inner wall of the tube 2 intervenes.

At an appropriate time during assembly will also be the profile 21 of the emergency drive 15 in the chamber 14 used, with the fork 22 along the longitudinal strip 24 and the clip strips 23.1 and 23.2 between the guide strips 25.1 and 25.2 be inserted. The torsion bar 19 gets into the sleeve 20 used and on the torsion bar 19 the gear 18 , Finally, the timing belt 19 over the gears 16 and 18 placed.

The pipe shell profile 4 forms a loop 34 from, in which preferably cable od. Like. Can be performed.

Subsequently, the two support elements 26.1 and 26.2 to the gearbox 12.1 and 12.2 stated. These support elements 26.1 and 26.2 then with the gears 12: 3 and 12.4 in the tube 2.1 at the platform 27 connected, previously the emergency drive 15.1 , the motor 13.1 and the gears 12.3 and 12.4 in a similar way as above for the lifting / lowering device 1 described in the pipe 2.1 at the platform 27 have been used.

Claims (9)

Tail lift, in particular for a vehicle, having a platform (27) which is connected via at least one support element (26.1, 26.2) to a lifting / lowering device (1), the platform (27) being connected to the support element (26.1, 26.2) a rotation axis (B) and the support element (26.1, 26.2) with the lifting / lowering device (1) forms a pivot axis (A) and the axis of rotation (B) and / or pivot axis (A) Engine (13, 13.1) and at least one gear (12.1 to 12.4) is assigned, characterized in that the motor (13, 13.1) and / or the transmission (12.1 to 12.4) is assigned a transducer for a torque over which the Weight of a cargo is determined. Tail lift to Claim 1 , characterized in that the transmission (12.1 to 12.4), the motor (13, 13.1) and / or the transducer is provided with a signal line. Tail lift to Claim 2 , characterized in that the signal line is connected to an electronic device. Tail lift to Claim 3 , characterized in that the electronic device translates the torque values into weight values. Method for monitoring a tail lift according to one of Claims 1 to 4 , characterized in that over a sensor for determining a torque overload of the tail lift can be determined by the torque acting on the tail lift is determined by the torque. Method according to Claim 5 , characterized in that held on the torque weight and charging cycles and read out. Method according to Claim 5 or 6 , characterized in that the data are transmitted to a central office. Method according to Claim 7 , characterized in that the data are forwarded via the Internet to the control center. Method according to Claim 7 or 8th , characterized in that it is determined by the center, how long the unloading will take and when to expect the availability of the vehicle.

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