OUTSIDE CONCRETE VIBRATOR HAVING AN OPERATION DISPLAY
The invention relates to an outside concrete vibrator for mounting to a concrete formwork, comprising an oscillation exciter that can be driven by an electric motor, a carrier that supports the oscillation exciter and that can be mounted on the concrete formwork, and at least one electric supply line having a power supply leading to the electric motor. A detection device inductively detects a power state in the power supply. The detected power state can be displayed via an optical signal via a display device.
1 . An external vibrator for fastening to a concrete formwork comprising:
a vibration exciter that can be driven by an electric motor;
a bearer that bears the vibration exciter and that is fastened to the concrete formwork; and
an electrical supply cable, having at least one power supply line, connected to the electric motor;
a detection device that intuitively acquires a power state in the power supply line; and
a display device that displays an optical signal corresponding to the acquired power state.
2 . The external vibrator as recited in claim 1 , wherein the power state is a parameter selected from the group consisting of:
presence of an electrical current;
current strength;
current frequency; and
current phase.
3 . The external vibrator as recited in claim 1 , wherein the detection device has an evaluation device that evaluates the acquired power state and that controls the display device corresponding to the acquired power state.
4 . The external vibrator as recited in claim 3 , wherein:
the supply cable has a plurality of power supply lines;
the detection device inductively acquires the power states in a plurality of the power supply lines; and
the respective power states are evaluated by the evaluation device and are displayed by the display device in the form of a unified optical signal.
5 . The external vibrator as recited in claim 3 , wherein the evaluation device recognizes at least one of:
the relative position of current phases of different power supply lines; and
the presence of electrical current in all the power supply lines required for the operation of the electric motor.
6 . The external vibrator as recited in claim 3 , wherein, in the evaluation device, a rule is reproduced according to which given a particular power state in an individual power supply line and/or given particular power states in a plurality of power supply lines, and wherein an optical signal corresponding to the rule is displayed via the display device.
7 . An external vibrator as recited in claim 1 , wherein:
the electrical supply line is routed through a terminal box; and wherein
the detection device is situated in the terminal box.
8 . The external vibrator as recited in claim 7 , wherein the terminal box is fastened to the bearer.
9 . The external vibrator as recited in claim 1 , wherein:
the electrical cable has a connecting plug, and wherein
the detection device is situated in the connecting plug.
10 . The external vibrator as recited in claim 1 , wherein the detection device is situated completely in the electrical cable.
11 . The external vibrator as recited in claim 1 , wherein the detection device, the evaluation device, and the display device are supplied inductively by a current that flows through the power supply line that is monitored by the detection device.
12 . The external vibrator as recited in claim 1 wherein the display device is provided on the bearer.
13 . The external vibrator as recited in claim 1 wherein the detection device additionally acquires a voltage state in at least one of the power supply line and the electrical supply cable.
14 . The external vibrator as recited in claim 13 , wherein the evaluation device additionally evaluates the acquired voltage state and controls the display device corresponding to the acquired voltage state.