High-frequency vibrators are widely used in the infrastructure construction of high-speed railways and highways. Its main function is to make building materials denser before they solidify.
2. Working principle
Its working principle is to rely on the eccentric flat square shafts at both ends of the motor to transmit power to the rolling elements set with the bearing sleeves through the bearing sleeves that are floatingly connected with the motor. The rolling elements make planetary rolling in the polygonal raceway set with the end cover to generate vibration , And transmit the vibration to the end cover and even the casing through the raceway, so that the building materials on the equipment vibrate together.
Three, performance characteristics
The performance of the traditional attached vibrator has been greatly improved under the transformation of the easy-drive inverter. The main performance characteristics after the transformation are as follows: High excitation frequency (150HZ/s), large excitation force (11KN-15KN), The amplitude is small (<1.3mm), the radiation range is large (1.5-2.0m), the fluidity and plasticity of the concrete are increased, the compactness of the components is improved, and the forming is fast.
High vibration efficiency. Due to the high vibration frequency and small amplitude, less energy is consumed on the deformation of the steel template, which prolongs the service life of the template.
Small size and light weight (only 21KG/unit). It adopts quick assembly and unloading structure, only one screw is needed to fix on the template. It only takes 30 seconds to load and unload one unit, which saves 75% of the auxiliary time for vibrator installation and 75% of manpower compared to using ordinary external vibrators.
The dosage is small. Due to the use of the quick assembly structure, only 20-40 units can be used to produce large-scale concrete with a 50-meter T-beam. Compared with the use of ordinary vibrators, it saves a lot of cables and at the same time can be safe and civilized construction.
The service life is more than 4 times that of ordinary vibrators. Due to the high efficiency of high-frequency vibrators, each vibration time only needs 25-60 seconds. Therefore, the service life of the vibrator is greatly improved, maintenance is reduced, and the cost is reduced.
Fourth, advantage analysis
① Advantage analysis
he high-frequency vibrator not only has a long service life, high efficiency, large amplitude, strong excitation force, no vibration loss, but also has a compact structure, convenient use, few wearing parts, and easy maintenance. The usual working efficiency of the high-frequency attached vibrator is 8 times that of the traditional attached vibrator. Because the high-frequency attached vibrator adopts the technical transformation of the easy-to-drive frequency converter, the vulnerability and heat generation coefficient of the high-frequency attached vibrator are reduced, thereby greatly improving the motor performance. Service life. Not only that, after the traditional attached vibrator is modified with an easy-to-drive inverter, it has a high degree of automation, easy operation and control, and can also achieve protection functions such as overvoltage, undervoltage, overload, overheating, overcurrent, and external faults to achieve better The effect of protecting the motor.
Through the test and analysis after the actual operation of the system, the high-frequency vibrator has high efficiency, large amplitude, strong excitation force, no vibration loss, easy to use, few wearing parts, and easy maintenance after using the easy-drive inverter. Can effectively improve production efficiency and speed up project progress. It can also provide timely protection for the motor overcurrent, overvoltage, overheating, undervoltage, and vibrator overload and disconnection. It is foreseeable that with the development of science and technology, the requirements for automation are getting higher and higher, and frequency conversion speed regulation will be widely used.