What Are The Kinds And Check Methods Of Starter Motors

Construction machinery is an important piece of equipment in the field of modern architecture and engineering. Its reliability and efficiency are critical to the smooth running of the project. As one of the important components in construction machinery, the starter motor is directly related to the start and operation of the entire mechanical equipment whether its performance is stable or not. In this article, MyMROmarts will explore what kind of motor a starter motor is and what to use to check a starter motor. Provide valuable guidance to ensure the normal operation of construction machinery.

What Kind Of Motor Is A Starter Motor

In construction machinery, starter motors can be mainly divided into two kinds: DC motors and AC motors. They each have their advantages and applicable scenarios.

DC Motors In The Starter Motor Kinds

DC motor is one of the more common starter motors in construction machinery. It is characterized by large starting torque and a wide range of speed regulation. And the response is sensitive, which is suitable for scenes with high requirements for starting and frequent speed changes. It ensures that the starter motor of the mechanical equipment can work normally. Thereby driving other diesel engine parts to work. In the DC motor, it can be divided into two types: series-excited DC motor and shunt-excited DC motor.

a. Series excited DC motor means that its excitation coil is connected in series in the circuit of the motor. The excitation current is provided by an external power supply. This kind of motor has a large starting torque, but its speed regulation performance is relatively poor, and it is suitable for some scenarios with small load fluctuations.

b. A shunt-excited DC motor means that its excitation coil is separated from the circuit of the motor and powered by an independent power supply. This kind of motor not only has a large starting torque but also has a wide range of speed regulation, which is suitable for scenarios with large load fluctuations or precise control of speed.

AC Motors In The Starter Motor Kinds

AC motors are also widely used in construction machinery. Compared with DC motors, AC motors have a simpler structure, lower maintenance costs, and are more cost-effective in high-power applications. According to its structural form, AC motors can be divided into two types: asynchronous motors and synchronous motors.

a. Asynchronous motor, also known as induction motor, is the most widely used AC motor at present. It is characterized by a simple structure, strong load capacity, and relatively low price. In construction machinery, asynchronous motors are mainly used for relatively high-power drives.

b. Synchronous motors are rarely used in construction machinery. The engine starter is characterized by high efficiency and high power factor. Applicable to scenarios that require high power utilization efficiency.

What Is Used For Checking Starter Motors

a. A multimeter is a portable instrument used to measure electrical parameters such as current, voltage, and resistance. It can be used to check the electrical parameters of the motor, such as voltage, current, insulation resistance, etc.

b. A magnetometer can be used to detect the magnetic field of a DC motor. To ensure the normal operation of the excitation system of the motor.

c. Check the bearing temperature of the starter motor with a bearing thermometer. This prevents damage to the bearing due to overheating.

d. Measure the speed of the starter motor with a tachometer to ensure that the speed of the starter motor is within the normal range. Thereby, it can drive the electric alternator and other mechanical equipment to work normally.

e. Use a thermal imaging camera to detect the heat distribution of the starter motor or windings. In order to determine whether there is an overheating problem.

f. Use an insulation resistance tester to test the insulation performance of the starter motor. This ensures that the insulation of the starter motor is intact.

g. Use a vibration tester to detect the vibration level of the motor to determine whether there is any abnormal vibration.

To sum up, there are various kinds of starter motors in construction machinery. Each kind has its applicable scenarios. In order to ensure the normal operation of the starter motor, we can carry out regular maintenance and testing through equipment such as multimeters, magnetometers, bearing thermometers, tachometers, and thermal imaging cameras. Only by ensuring the stable and reliable performance of the starter motor can we ensure the efficient operation of construction machinery at work.