Track bolts innovative design and excellent performance
Publish Time: 2024-09-12
The innovative design and excellent performance of track bolts are mainly reflected in the following aspects:
1. Innovative design
Material and grade improvement:
Track bolts are made of high-strength materials, such as low-carbon alloy steel or medium-carbon steel, and are heat treated (such as quenching and tempering) to improve their performance. Common performance grades include 8.8, 10.9 and even higher. These bolts have higher tensile strength and yield strength and can withstand greater loads and impact forces.
For example, the nominal tensile strength of 10.9-grade high-strength bolts can reach 1000MPa, the yield strength ratio is 0.9, and the nominal yield strength is 900MPa. This performance improvement makes track bolts more reliable in complex and harsh track environments.
Structural design optimization:
The head and thread design of track bolts are optimized to improve their connection performance and tightening effect. For example, the use of special thread shapes and angles can increase the friction between the bolt and the nut, and improve the stability and reliability of the connection.
At the same time, the head design of the bolt also takes into account the convenience of installation and disassembly, making the rail bolts easier to operate during maintenance and replacement.
Intelligence and automation:
With the development of science and technology, the tightening process of rail bolts has also achieved intelligence and automation. Modern tightening control technology takes the control of torque and angle as the core, combines sensing technology, automatic control technology and network technology, and realizes real-time monitoring of the tightening process and automatic judgment of tightening quality.
For example, some advanced tightening equipment can achieve multi-axis tightening at the same time, and control the tightening sequence and tightening speed of the bolts through the program to improve the tightening efficiency and consistency.
2. Excellent performance
High strength and reliability:
The high-strength design of the rail bolt enables it to withstand the huge load and impact force during the operation of the train, ensuring the stable operation of the train under extreme conditions such as high speed and heavy load.
At the same time, its reliable connection performance also reduces the risk of safety accidents caused by loose or broken bolts.
Wear resistance and corrosion resistance:
Rail bolts need to have good wear resistance and corrosion resistance for long-term operation in outdoor environments. By adopting special materials and surface treatment technologies (such as hot-dip galvanizing, Dacromet, etc.), the corrosion resistance and wear resistance of bolts can be effectively improved, and their service life can be extended.
Safety:
The design and production of rail bolts strictly follow relevant safety standards to ensure that they will not fall off or break in an emergency, thereby ensuring the safety of trains and passengers.
At the same time, its reliable connection performance also reduces the risk of safety accidents caused by connection failure.
Easy maintenance:
The design of rail bolts takes into account the needs of easy installation and disassembly, so that maintenance and replacement can be carried out quickly and conveniently. This reduces maintenance costs and time, and improves the utilization rate and operating efficiency of trains.
The innovative design and excellent performance of rail bolts provide a strong guarantee for the safe, stable and efficient operation of rail transit. With the continuous advancement of science and technology and the continuous development of the rail transit industry, the performance and design of rail bolts will continue to be optimized and improved.
