Multi-parallel mechanical limit type tubular motor

Abstract

The invention discloses a multi-parallel mechanical limit type tubular motor, comprising a plurality of tubular motors in parallel, wherein the plurality of tubular motors are provided with a limit switch respectively and connected to the same control terminal. The multi-parallel mechanical limit type tubular motor is characterized in that crosstalk-resistant devices are arranged in front or at back of the limit switches and each crosstalk-resistant device comprises a relay controlled by a control module. Therefore, the plurality of tubular motors can be stopped simultaneously, and the effective parallel connection of the plurality of tubular motors can be ensured.

Description

technical field [0001] The invention relates to a plurality of parallel-connected mechanical limit-type tubular motors, in particular to a parallel-connected tubular motor with an anti-crosstalk device. Background technique [0002] For mechanical limit type tubular motors, when multiple tubular motors are connected in parallel and share one control terminal for control, the tubular motors usually use such as figure 1 The circuit shown is connected to the control terminal. [0003] Such as figure 1 As shown, multiple tubular motors are connected in parallel, and two are shown in the figure. S1, S2, S3, and S4 are respectively the limit switches of the motors M1 and M2, which are normally closed during normal operation. L1 and L2 are the two switch contacts of the control terminal. When the switch switches to the contact L1, the first lead terminals 1 of the motors M1 and M2 are energized, and the motor rotates forward. For example, when the motor M1 reaches the limit point...

AI Technical Summary

Problems solved by technology

L1 and L2 are the two switch contacts of the control terminal. When the switch switches to the contact L1, the first lead terminals 1 of the motors M1 and M2 are energized, and the motor rotates forward. For example, when the motor M1 reaches the limit point first, the limit When the position switch S1 is turned off, the motor should stop, but because the motor M2 is connected in parallel, the voltage of its first lead terminal 1' is sent to the second lead terminal 2 of the motor M1 through the starting capacitor C, limit switches S4, S2, so that The motor M1 reverses, so that the motor M1 does not stop at the current limit point

[0004] It can be seen from this that when multiple tubular motors are connected in parallel and share one control terminal, when a certain tubular motor reaches the limit point, although the tubular motor has cut off the power supply, due to the circuit formed by the windings and capacitors between the motors, the tubular motor reaches the limit point. The limit point did not stop immediately, which caused the problem that the limit points of multiple tubular motors stopped inconsistently, and in severe cases, the motor may be damaged

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