Entries by TB垫

What are the methods to control the quality of tunnel lining?

Tunnel lining plays a critical role in ensuring the structural stability, safety, and durability of underground construction projects. As the permanent support structure, the lining must withstand ground pressure, water ingress, and long-term environmental influences while maintaining serviceability throughout the tunnel’s lifespan. To achieve these objectives, stringent quality control measures are essential during design, material selection,manufacturing,and […]

2025-09-28 by

What are the differences between primary and secondary lining of tunnels?

Tunnel linings are critical components in excavation projects, providing structural support and ensuring long-term stability. They are typically categorized into primary and secondary linings, each serving distinct purposes during and after construction. The primary lining is the initial support system installed immediately after excavation. Its main function is to stabilize the newly excavated ground, prevent immediate […]

2025-09-28 by

How to maintain inverted bridge formwork

Maintaining inverted bridge formwork is crucial for safety and for ensuring the quality of the concrete structure. This involves a systematic approach that includes regular inspection, proper cleaning, and correct storage and handling. Inverted Bridge Formwork Maintenance 1. Design and Planning: Detailed Drawings: Before starting, have detailed drawings that show the formwork’s dimensions, materials, support system, and […]

2025-09-28 by

Detailed explanation of the working principle of the tunnel lining trolley

A tunnel lining trolley, also known as a formwork trolley or a segment erector, is a crucial piece of equipment used in the construction of tunnels, particularly for the installation of the final lining. Its working principle can be broken down into several key stages and components. Tunnel Lining Trolley Working Principle 1. Purpose of the […]

2025-09-28 by

How to customize trailer turntable bearing size

Trailer turntable bearings play a critical role in ensuring smooth rotation and reliable load distribution in trailers, particularly in heavy-duty applications such as construction, agriculture, and transport. Selecting the correct bearing size is essential to match the specific weight, load conditions, and rotational requirements of a trailer. Customizing trailer turntable bearing size allows manufacturers and users […]

2025-09-28 by

What are the key points for purchasing agricultural trailer turntable bearings?

Agricultural trailers are indispensable tools on farms, used for transporting a wide variety of loads, from harvested crops and feed to machinery and implements. At the heart of a well-functioning agricultural trailer is its steering system, and a critical component of that system is the turntable bearing. This bearing allows the front axle to pivot […]

2025-09-28 by

What is the load capacity of trailer turntable bearings?

The load capacity of trailer turntable bearings can vary significantly based on the specific type, size, and design of the bearing, as well as the application’s operating conditions. Manufacturers typically provide a range of load capacities, often expressed as an axial load in kN (kilonewtons) or tons. For example, some models of turntable bearings are designed for […]

2025-09-28 by

What are the common problems of trailer turntable bearings and how to solve them

Trailer turntable bearings are crucial for the smooth and safe operation of trailers, especially those with steerable axles. When these bearings encounter issues, they can lead to significant problems. Common Trailer Turntable Bearing Problems and Solutions 1. Excessive Play or Looseness Problem: This is often the most noticeable issue. You might hear clunking noises, feel excessive […]

2025-09-28 by

Steel Structure Factory Price Guide: Cost per Square Meter Explained

When planning an industrial, commercial, or agricultural construction project, understanding the steel structure factory price is one of the most important steps. Steel structures have become the preferred choice for modern buildings due to their durability, cost-effectiveness, fast installation, and design flexibility.However, the price of a steel structure factory can vary widely depending on several factors such […]

2025-09-28 by

How to Build a Steel Structure Cold Storage Warehouse

Steel structure cold storage warehouses have become the industry standard for food, pharmaceuticals, and other temperature-sensitive goods. They combine strength, durability, and flexibility, making them ideal for both small and large-scale storage solutions. How to Build a Steel Structure Cold Storage Warehouse Why Choose Steel Structure for Cold Storage? 1.High Strength-to-Weight Ratio: Steel provides robust support […]

2025-09-28 by