Speed measurement control device for motor

Abstract

The invention discloses a speed measurement control device for a motor. The speed measurement control device comprises a motor main shaft inserted in a stator iron core and a rotor iron core, wherein the motor main shaft is fixed in an upper end cover and a lower end cover of the motor through an upper bearing device and a lower bearing device respectively; the upper bearing device comprises an upper end cover bearing fixed on the main shaft; the upper end cover bearing is arranged in a concave platform of the upper end cover of the motor; an upper bearing elastic component is radially arranged on the upper end cover bearing in the concave platform; an upper sealing cover plate is axially arranged on the upper bearing elastic component; the lower bearing device comprises a lower end cover bearing fixed on the main shaft; the lower end cover bearing is arranged in an inner concave platform of the lower end cover of the motor; a lower bearing elastic component is radially arranged on the lower end cover bearing in the inner concave platform; a lower sealing cover plate is arranged in an outer concave platform of the lower end cover of the motor; and signal converters are arranged in cavities of the lower sealing cover plate and the outer concave platform. The scheme provided by the invention overcomes the defect that the motor application is limited because the conventional motor is not provided with the speed measurement control device and the like; besides, the speed measurement control device is suitable for various control motors.

Description

Technical field [0001] The invention relates to a speed measurement control device for a motor. Background technique [0002] Existing control motors used in centrifuge refrigeration studios work at a high speed of 25,000 rpm, but there is no speed measurement device, which limits the application of the motor. In order to increase the speed measurement control function, users can only install it under the motor. A speed control device. After installing the speed measurement control device, and the tail end of the motor spindle protrudes out of the lower end cover of the motor, the overall length of the motor is increased, which increases the space required for the installation of this motor product. The product placement, packaging and transportation also need to increase the product holder, etc. More parts and longer products also increase the use and installation difficulty of the motor and the original supporting user equipment. For example, different user equipment has diffe...

AI Technical Summary

Problems solved by technology

[0002] The existing control motor used in the centrifuge refrigeration studio has a working condition of 25,000 rpm and high speed, but there is no speed measuring device, which limits the application of the motor. In order to increase the speed measuring control function, the user can only install it under the motor. A speed control device

After the speed measurement control device is installed, and the tail end of the motor shaft protrudes outside the lower end cover of the motor, the overall length of the motor increases, resulting in an increase in the space required for the installation of the motor product, and additional product stands are required for product placement, packaging and transportation. More parts and lengthening of the product increase the use and installation difficulty of the motor and the original matching user equipment. For example, different user equipment has different installation size requirements, which often cause installation difficulties or insufficient installation space, which increases the User usage and maintenance costs

In addition, the bearing device for the motor is easy to be squeezed and damaged at the junction of the motor shaft and the motor end cover due to high-speed operation, heat generation, parking, cooling, deformation, etc., resulting in increased motor operating noise, increased vibration, and reduced product qualification rate , the waste of raw materials is large, and the supporting equipment cannot work normally and safely

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