Electric hoist The working principle is that the main control valve controls the motor. Lifting equipment requires power when lifting heavy objects, so the motor of the hoist is the main driving force, and its function drives the operation of the electric hoist. Therefore, the motor is a very important component for the smooth lifting of the hoist, which can ensure safety and achieve smooth lifting.

　　The working principle of the electric hoist is that the sprocket can make the lifting smooth, and it is important to know that lifting is inseparable from the chain. For example, the motor is our heart, and the chain is the arm. The former can play the role of power, the latter is the role of contacts, and neither can be missing. The chain has many advantages, such as being light and durable, and is a key component for lifting. The lifting sprocket can effectively control the lifting chain, and can play a stable and effective role, and it will be very safe and stable during operation. The third point of the working principle of the electric hoist is the effective braking of the braking system. During or at the end of the lifting process, the braking system will automatically work, which will solve many problems and also play a braking role. It is generally completed by the braking system, which can play a good braking role. Moreover, the use of various disc braking systems can make the braking system run more safely and orderly.

    Electric hoist According to the arrangement of several main components such as the motor, brake, and drum, it can be divided into TV type electric hoist, CD type electric hoist, DH type electric hoist, and MD type electric hoist. According to the use, it can be divided into general-purpose electric hoists and special-purpose electric hoists. Two types of reeds. General-purpose electric hoists can be used in the temperature range of -20~35, and are not suitable for explosive and flammable places with serious acid, alkali, and dust. Special-purpose electric hoists have explosion-proof, corrosion-proof, and moisture-proof functions. Suitable for harsh environments. Currently, there are two types of electric hoists produced in China: high-speed and low-speed. Slow speed is generally used in precision installation occasions, and high-speed electric hoists are generally used when there are no special requirements for hoisting and operation. CD type is single-speed lifting, and MD type is constant-speed lifting and slow-speed lifting. CD type electric hoists have the advantages of light weight, small size, and simple structure. The CD type is a single-speed electric hoist with a conical rotor motor.

　　The electric hoist first starts the lifting motor to lift the heavy object to the appropriate height, then starts the running motor to transport the heavy object to the designated position, and the running trolley travels on the lower edge of the I-beam. When walking, it is driven by a motor. Rotate the wheels on both sides of the car. Because the walking speed is low, the walking trolley generally does not have a braking mechanism. When the trolley is running, in order to prevent the heavy object from falling, an electromagnetic brake is installed on the lifting mechanism. Braking depends on the pressure of the spring. The principle of pressing the inner and outer plates is similar to that of a friction clutch. When released, the outer plate is held by an electromagnet, and the inner and outer plates are released. The circuit of the electromagnetic brake is connected in parallel with the circuit of the lifting motor, so when the lifting motor starts, the electromagnetic brake is released.