초록 ▼

A method is provided for controlling a vehicle lifting device, having at least two, preferably moveable, lifting columns (1-4), which are controlled wirelessly. When a switch is activated for raising or lowering the lifting device, a corresponding signal is transmitted wirelessly to the lifting colu

A method is provided for controlling a vehicle lifting device, having at least two, preferably moveable, lifting columns (1-4), which are controlled wirelessly. When a switch is activated for raising or lowering the lifting device, a corresponding signal is transmitted wirelessly to the lifting columns (1-4) and additional signals, which are representative of the individual lifting movements, are transmitted to a control device (5). In the case of unacceptably high movement differences between individual lifting columns, the normal operation is stopped. Here, it is essential that for monitoring the wireless signal transmission, the control device (5) exchanges control signals with the lifting columns (1-4) continuously, and the reception of these control signals is monitored at least in one direction.

대표청구항 ▼

We claim: 1. A method for controlling a vehicle lifting device having at least two, preferably moveable, lifting columns (1-4), which are controlled wirelessly, and a control device (5) for wirelessly monitoring signal transmissions, the method comprising activating a switch to cause raising and/or

We claim: 1. A method for controlling a vehicle lifting device having at least two, preferably moveable, lifting columns (1-4), which are controlled wirelessly, and a control device (5) for wirelessly monitoring signal transmissions, the method comprising activating a switch to cause raising and/or lowering movements of the lifting device, wirelessly transmitting to each of the lifting column(s) (1-4) a signal corresponding to the switch activation to cause corresponding raising or lowering movements of the individual lifting column(s), transmitting to the control device (5) additional signals, which are representative of the individual raising or lowering movements of each column, wherein the control device (5) continuously exchanges control signals with the lifting columns (1-4) and monitors reception of the control signals at least at one of the control device (5) and the lifting columns (1-4), and stopping normal operation of the raising or lowering movements for unacceptably high movement differences among the individual lifting columns, wherein the lifting movement in each lifting column (1-4) is transmitted via a rotating threaded spindle (21) and the threaded spindle (21) engages with a grip nut (22), which is set in rotation during raising and lowering movements, is led into active connection with a braking element (29), and is braked when a certain lowering speed of the threaded spindle is exceeded. 2. The method according to claim 1, wherein the exchange of control signals is performed at a frequency of at least 1 Hz. 3. The method according to claim 2, wherein the exchange of control signals is performed at a frequency of at least 3 Hz. 4. The method according to claim 2, wherein the exchange of control signals is performed at a frequency of at least 6 Hz. 5. The method according to claim 1, wherein the control device (5) stops the operation of the raising or lowering movements for an interfering signal exchange. 6. The method especially according to claim 1, wherein the control device (5) is arranged separate from the lifting columns (1-4). 7. The method according to claim 1, wherein the lifting device is activated by switches, attached to the lifting columns (1-4), and when activated, the switches generate signals that are transmitted wirelessly to the control device (5) and from the control device wirelessly to all of the lifting columns. 8. The method according to claim 1, wherein the lifting columns (1-4) are equipped with measurement elements for determining an individual lifting position of the lifting columns, respectively, the individual lifting positions of the lifting columns are transmitted continuously and wirelessly to the control device (5), and, if necessary, the control device transmits control signals to the respective lifting columns to synchronize and/or stop the operation of the lifting columns for unacceptably large lifting differences. 9. The method according to claim 1, wherein the lifting columns (1-4) are equipped with measurement elements for determining an individual lifting position of the lifting columns, respectively, the individual lifting positions of the lifting columns are transmitted continuously and wirelessly to regulating devices arranged on the respective lifting column (1-4), setting a desired value by one of the regulating devices, and, if necessary, the one regulating device acts on its lifting column and/or on the other lifting columns to achieve the desired value. 10. The method according to claim 1, wherein each lifting column (1-4) is combined with an anti-drop device. 11. The method according to claim 1, wherein the grip nut (22) is in active connection with an incremental path measurement system (30) on its periphery. 12. The method according to claim 1, wherein each lifting column (1-4) is equipped with a separate energy accumulator, in particular a rechargeable battery (1a), and a motor (1b) for generating a raising or lowering movement. 13. The method according to claim 1, wherein each lifting column (1-4) is equipped with a wheel fork (14) for engaging a vehicle wheel from below.