Frequently, customers ask how the variable speed motor should be properly maintained and maintained. This article is a small series on this topic for everyone to give a detailed description. In fact, the maintenance of the variable speed motor is very simple, as long as the regular replacement of the lubricant, regular replacement of the wearing parts inside the reducer, you can ensure the normal operation of the reducer. Specifically divided into the following aspects.1 regular replacement of lubricating oilA. Use the worm for the first time or replace it, and change the oil after 150-400 hours of operation. The oil change interval is less than or equal to 4000 hours.B. Regularly check the amount and quality of the oil, keep enough lubricating oil, and replace the oil mixed with impurities or deterioration in time.C. The amount of oil to be injected shall be in accordance with the requirements of the table. Oils of different grades are forbidden to be mixed. Oils with the same grade and different viscosity are allowed to be mixed.D, the working environment temperature of the variable speed motor is -40 ~ +40 °C. When the ambient temperature is below 0 °C, the lubricant must be heated above 0 °C or a low freezing point lubricant before starting.Oil level checkTurn off the power to prevent electric shock! Wait for the reducer to cool!Remove the oil level plug to check if the oil is full.Install the oil level plug.Oil inspectionOpen the oil drain plug and take the oil sample.Check the viscosity index of the oil:- If the oil is turbid, it is recommended to replace it as soon as possible.For gearboxes with oil level plugs:- check the oil level and pass the test- Install the oil level plug.

What are the primary causes of common faults in the regulation system? The large body caused by the speed control motor itself can be summarized as the hydraulic identity due to the pressure fluctuation or vibration of the water flow of the water diversion system leading to the rotational speed of the turbine. However, for a process purpose, it can be realized through a horizontally different process system, and within the scale of a single process, it is possible to formulate various divergent process plans. The vector variable frequency speed control ac vector inverter enables the AC frequency converter to control the AC motor according to the control mode of the DC motor through the complicated calculation of the DC motor to achieve the characteristics of accurate speed control, torque control and output torque.

The insulating sleeve of the motor parts is completely free from cracks and looseness. The lead connections should be strong and the insulation resistance should not be less than 0.5 MΩ at an operating temperature of 75 °C. In the brush device, the lower edge of the brush box is required to be 2~4mm away from the surface of the motor fitting. If the distance is too large, the brush will jump in the brush box. If it is a hard brush, it is likely to be broken. The brush should be slidably flexible in the brush box, and the inner surface of the brush box is smooth. The radial dimension tolerance of the inner hole of the brush box is H10, and the axial dimension tolerance is H8. Brush width and thickness dimension tolerance d11. The gap between the brush and the brush box should be 0.1~0.2mm, the gap is too large, the brush will produce tangential oscillation in the brush box, affecting the normal operation of the motor parts; the gap is too small, so that the brush is stuck in the brush box, causing similar The arc of the electric arc burns the surface of the copper ring.During the overhaul, the motor parts should be carefully inspected: whether the motor parts work surface is smooth, with or without burn marks, streaks and other defects. The working surface is required to be smooth and there should be no rust and grease. The outer parts of the motor parts are to be properly bundled and sealed. If it is not handled well, it can be bundled with a non-woven glass ribbon impregnated with synthetic resin to prevent the outer leakage of mica flakes during motor operation. The fitting of the motor parts and the shaft and the matching of the rings and the insulating sleeve should be firm. Use a small hammer to tap the copper ring and the copper joint, and there should be metal sound.

The variable speed motor is composed of three parts: a common squirrel cage asynchronous motor, an electromagnetic slip clutch and an electric control device. The variable speed motor is used as a prime mover, and when it rotates, the armature of the clutch is rotated together, and the electric control device is a device that provides the excitation current of the slip coil excitation coil. Here we mainly introduce the electromagnetic slip clutch, which includes three parts: armature, magnetic pole and excitation coil. The armature is a cylindrical structure made of cast steel, which is connected with the rotating shaft of the squirrel cage asynchronous motor, commonly known as the active part; the magnetic pole is formed into a claw-shaped structure and is mounted on the load shaft, commonly called the driven part.The active part and the driven part have no mechanical connection. When the exciting coil passes a current, a magnetic field is generated, and the claw-shaped structure forms a plurality of pairs of magnetic poles. At this time, if the armature is dragged and rotated by the squirrel cage asynchronous motor, it cuts the magnetic field interaction and generates torque, so that the magnetic pole of the driven portion rotates together with the active portion armature, and the former rotates lower than the latter. Because the armature can cut the magnetic lines of force only when there is relative movement between the armature and the magnetic field. The pole rotates with the armature.The principle is not fundamentally different from the principle of the rotating magnetic field of the common asynchronous motor rotor following the stator winding. The difference is that the rotating magnetic field of the variable speed motor is generated by the three-phase alternating current in the stator winding, and the magnetic field of the electromagnetic slip clutch is composed of the exciting coil. The DC current is generated and acts as a rotating magnetic field due to the rotation of the armature.

Modularly designed products are generally formed into series, modules are used for mass production, and a variety of products are composed of fewer varieties of modules. High efficiency, high transmission mostly relies on the modular design of geared motor. In the market of reducer, the various types of reducers are complete. When purchasing, most customers will choose gears or Modular design, although the price is much higher than the average reducer, but this series has significant advantages, please contact DC motor manufacturer Dong Shunda to understand the specific gear reduction motor modular design :1. Correctly select the model and parameters of the geared motor2, the design of the module. How to divide the module is a key issue in the modular design of the reducer. There are many types of modules, high degree of generalization, and large processing batches, which is beneficial to reducing costs.3. Combination of modules. When designing the structure of the reducer module, the design of the joint parts should be considered. Combined reducer, reducer and motor with brake function developed in China. It is the prototype of the modular combination of reducer in China.The modular design is a set of specific modules that, within a certain range, constitute a variety of different functions or product designs with different functions and functions. The modular design of the gear reduction motor is to change the company's products in a series, mass production and cost reduction with far-reaching value.