Analysis Of Core Technology And Key Parameters Of Building Motor

At the moment of the mechanization and intelligent upgrading of construction engineering, as the "heart" of construction equipment, the technical iteration and performance of construction motor are directly related to construction efficiency, operation safety and equipment durability, and are also the core support to promote the high-quality development of the construction industry. From small construction equipment to large engineering equipment, the core technology system and key performance parameters of construction motor not only determine the comprehensive competitiveness of equipment, but also become an important basis for enterprise selection and technology upgrading.

Core Technology System

1. transmission technology

It is divided into two directions: hydraulic transmission and electric transmission. The hydraulic transmission realizes power transmission through the hydraulic pump and valve group, and has the functions of stepless speed regulation and overload protection. It is suitable for excavator boom control and other scenes, but the cleanliness of the hydraulic oil needs to be maintained regularly; The electric drive relies on the frequency converter and servo motor to achieve accurate control and fast response. It is mostly used for automatic construction equipment, such as the automatic leveling system of paver, which can reduce the operation error by more than 20%.

2. intelligent control technology

Integrating can bus, touch screen and AI diagnosis module, it can monitor motor speed, temperature, load and other parameters in real time, and realize remote control, fault warning and energy optimization distribution. Japanese enterprises such as Hitachi construction machinery and Komatsu have implemented ICT integration technology to reduce the risk of operation in high-risk scenes through remote control of motors.

3. protection and durability Technology

High strength alloy shell, sealed bearing and anti-corrosion coating are used to improve the service life of the motor in high temperature, high humidity and dusty environment. For example, the motor of tower crane usually adopts class F insulation, and the protection grade reaches IP55, which can adapt to the extreme temperature range of -20 ℃ to 60 ℃.

Key Performance Parameters

1. power and torque

The power determines the motor output capacity. The motor power of small construction equipment is mostly 5-18kw, and the motor power of large mining machinery can reach hundreds of kW; The torque directly affects the load capacity of the equipment and needs to be accurately matched with the operation requirements of the construction machinery.

2. speed and braking performance

The speed determines the operation efficiency. For example, the rated speed of the construction elevator motor is usually 1400r/min, and the lifting speed can reach 96m/min; The braking performance shall meet the requirements of fast emergency stop response, stable braking torque and avoiding load sliding.

3. protection grade and insulation grade

The degree of protection (IP) reflects the dust-proof and water-proof ability, and IP54 or above is generally required for building motors; The insulation grade determines the high temperature resistance. Class F insulation can withstand 155 ℃ high temperature and is suitable for long-time full load operation.

The core technology iteration of building motor focuses on efficient transmission, intelligent control and durable protection, and the key performance parameters are accurately matched around the operation requirements. With the transformation of the construction industry to intelligent and green, the motor technology will be further upgraded to energy-saving, integrated and remote. In the future, it will continue to upgrade the construction equipment, help improve the quality and efficiency of construction projects, be safe and controllable, and inject lasting power into the high-quality development of the industry.