FI62743C - SLAEPKABELANORDNING FOER FOERFLYTTBARA ANORDNINGAR - Google Patents

Description

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Federal Republic of Germany-Förbundsrepubliken Tyskiand (DE) P 255197 ^ .8 (71) Siemens Aktiengesellschaft, Berlin / Munchen, DE; Wittelsbacherplatz 2, D-8000 Munchen 2, Federal Republic of Germany-Förbundsrepubliken TJyskland (DE) (72) Dieter Lenzkes, Erlangen, Federal Republic of Germany-Förbundsrepubliken ly ski and (DE) (7¾) Oy Kolster Ab (5¾) Släpkabelanordning för förflyttbara anordningar

The invention relates to a device for supplying energy and transmitting signals from or to displaceable devices, in particular lifting devices, via lines arranged in a vine on line carriages with a controlled or regulated single-electromotive drive device.

The single drive of the trolleys reduces traction and buckling stresses and saves mechanics. Both rotary motors, e.g. with a friction drive, and linear motors can be used as the drive device.

Correspondingly, the position of the lead is taken by the lead car at a separate speed and a corresponding acceleration and deceleration.

When using line carriages with linear motors, the thrust forces of the linear motors can be controlled in a simple manner by means of voltage and the necessary acceleration and deceleration forces can be produced, as well as the forces to overcome the running resistances. However, this alone does not produce satisfactory driving conditions.

2 62743

The invention is based on the task of creating a sliding cable device with optimal driving conditions. In order to solve this problem, it is proposed according to the invention that a signal derived from the speed and acceleration of the device, taking into account the direction of travel, is applied to the control or regulation device of the control carriage drives to take into account the force components between the carriages. According to a further development of the idea of the invention, additional control signals are formed from the signal during the movement of the rope in order to take into account different force components depending on the relative movement of the guide carriages with respect to each other.

The invention will now be explained in more detail with reference to the drawing.

Figure 1 shows a trolley 1 of a lifting device running on a rail 2. The traction motor 3 of the trolley is connected to the power supply network by means of a movable line 5, one end of which is fixedly fixed in place, e.g. The line is suspended at equal distances a by line carriages 11 to 14, which are, for example, on a rail 4 parallel to rail 2. Each line carriage is preferably provided with a drive device 16 to 19 which is formed as a linear motor.

As the rope lengthens, the cable sections between the line carriages rise. In this case, lifting work must be carried out, which will be free again by the time the vine is sized. The lifting work is taken into account in connection with the control of the drive devices by means of an auxiliary force component.

If the guide carriage is pushed from the middle position towards both adjacent guide carriages, for example the guide carriage 12 in Fig. 2, then in this case different guide loops result in a directional force F which retracts the guide carriages to the middle position, i.e. has a stabilizing effect. The forces acting from the cable to the trolley in the direction of travel are marked with the reference markings F 12.11 and F 12.13. The resultant of these forces, i.e. the directional force, is equal to zero in the middle position marked with dashed lines. The increase in deflection force, depending on the magnitude of the unwinding, is greater in the case of a widely pulled out vine than in the case of a less pulled out vine. These relationships are

Claims (3)

3 62743 in Fig. 3, in which the abscissa represents the discharge s and the ordinate the orientation force F. The dashed line shows the orientation force when the vine is assembled and the full line the orientation force when the vine is unfolded. The system thus presents a different dynamic condition, depending on how far the vine has been pulled out. This dynamic condition is taken into account by the auxiliary force component when controlling linear motors. In order to take into account both of the above-mentioned force components, the speed of the displaceable device as well as its acceleration in terms of quantity and direction must be known. These quantities are connected to each other via a logic circuit so that the output of the logic circuit has a control signal corresponding to the required force components. The values for speed and acceleration can be obtained, for example, from the actual value of the device speed, but in the case of actuators controlled via a tachometer, it is also a reference value. An arrangement for supplying energy and transmitting a signal from and to displaceable devices, in particular lifting devices, by means of wires (5) arranged in a vine on line carriages (11 .., 14) with a controlled or adjusted single-drive electric motor (16 ... 19). ), characterized in that a signal derived from the speed and acceleration of the device, taking into account the direction of travel, is fed to the control or regulating device of the actuators (16.,. 19) of the guide carriages (11 ... 14), taking into account the direction of travel. , .. 14) to take into account the force components present between. Device according to Claim 1, characterized in that additional signals are generated from the signal in connection with the movement of the rope in order to take into account different force components which depend on the relative positions of the guide carriages relative to one another. Device according to Claim 2, characterized in that the signal in the controlled drive is derived from the actual travel speed of the device and in the controlled drive from the setpoint and / or the actual travel speed.