W14HH Rail Fastening System

Description of W14HH Rail Fastening System

The W14HH Rail Fastening System is quite similar to the W14 Rail Fastening System. But the W14HH fastener is applied to heavy-haul railway lines. The following is a detailed introduction to its components, working principle, functional features, and application scenarios:

Components of W14HH Rail Fastening System

• Rail clip（SKL14R）: It is a key component of the W14HH Rail Fastening System, usually made of spring steel. It generates a clamping force through its own elastic deformation and fastens the rail tightly on the sleeper.
• Insulated gauge block（wfp14k700R-12）: It is used to maintain the gauge of the rail and also serves as an insulating function to prevent the current from being transmitted from the rail to the sleeper and avoid short circuits in the track circuit.
• Rail pad（ZW 148*185*6/ZW /ZW 148*165*6, etc.）: Placed between the rail and the sleeper, it has good elastic and shock-absorbing properties. It can absorb the vibrations and impacts generated during the operation of the train, reducing the damage to the sleeper and the roadbed.
• Screw spike(SS35/DHS35/SS25/DHS25)with Uls7 flat washer: They are used to fix all components of W14HH Rail Fastening System on the sleeper to ensure the stability and reliability of the fastener.
• Dowel(Sdu9/Sdu25): It is pre-embedded in the sleeper and cooperates with the SS35/DHS35/SS25/DHS25 Screw spike to form a reliable anchorage, which can bear the running load of the train and prevent the fastener from loosening.

Working Principle

• The W14HH rail fastening system uses the elastic deformation of SKL14R rail clips to secure the rails. It’s designed for locomotives with a maximum 35-ton axle load, suitable for curves with a minimum 150-meter radius, meeting EN13481-2 Class E standards.
• During installation, SKL14R clips on both rail sides deform elastically when screw spikes are tightened, creating a clamping force that prevents rail movement and maintains gauge stability. Meanwhile, the elastic rail pad absorbs train-induced vibrations and impacts, reducing track damage and cutting down on noise.

Functional Features

• Good elasticity: Components such as the SKL14R rail clip and Rail pad have good elasticity, which can adapt to various forces generated during the train operation and ensure the smoothness and stability of the track.
• Reliable clamping force: The clamping force provided by the SKL14R rail clip can ensure a tight connection between the rail and the sleeper, furthermore effectively preventing the rail from creeping and the rail gauge from expanding.
• Good insulation performance: Components such as the wfp14k700R-12 insulated gauge block and rail pad have good insulation performance, which can meet the requirements of the track circuit and ensure the accuracy and reliability of signal transmission.
• Shock absorption and noise reduction: Components such as the rail pad can effectively absorb the vibrations and noises generated during the train operation and reduce the impact on the surrounding environment.
• Convenient installation and maintenance: The W14HH Rail Fastening System features a relatively simple structure. Firstly, this simplicity makes it highly convenient for installation and disassembly. Consequently, it streamlines the daily maintenance and inspection work, allowing railway workers to carry out these tasks with ease. In other words, the straightforward design not only reduces the time and effort required for installation and removal but also significantly enhances the efficiency of routine upkeep operations.

Application Scenarios

• The W14HH Rail Fastening System, after undergoing appropriate improvement and reinforcement, can also be applied to such railway lines. In fact, it is specifically engineered to withstand the enormous pressure and impact forces exerted by heavy-haul trains. By doing so, it effectively ensures the stability and reliability of the track structure, thereby playing a crucial role in maintaining the safe and smooth operation of heavy-haul railway transportation.

Technical Specifications of W14HH Rail Fastening System

Advantages

How to Find a Qualified Rail Fastener Manufacturer?

Please choose LTRF.

Why Choose LTRF?

• Strong Technical Expertise

LTRF boasts a dedicated R&D center. Moreover, it maintains long-term collaborations with major industry players such as China Railway, CRCC, and the Academy of Railway Sciences. In addition, it also partners with leading railway universities. As a result, LTRF has been able to develop various innovative fastening systems for both domestic and international markets. Notably, all these systems possess independent intellectual property rights. Indeed, to date, LTRF holds over 30 invention and utility model patents.

• Professional Manufacturing

LTRF always aims for the best. We carefully choose the materials we use and make sure every part is made with great care and skill. And we believe in doing things perfectly, so we keep coming up with new ideas and check the quality of our products very carefully to make sure they’re good.​

We work fast to make sure you get your order on time. And we offer good service before and after you buy something. At LTRF, we also focus on what our customers need. We’re committed to making good products and providing great service in everything we do.

• Competitive Pricing + Superior Quality

LTRF control the cost of each process, and the finance department updates the cost calculation regularly. 
Furthermore, LTRF’s advanced testing equipment endows the company with comprehensive quality inspection capabilities for the entire fastener system. This meticulous quality-control measure is crucial for ensuring product reliability. Importantly, LTRF holds ISO and CRCC certification for railway products. These certifications not only demonstrate the company’s compliance with international and industry-specific standards but also enhance its credibility in the market.