For Permanent Tunnel Formwork System

Working Principle of Tunnel Lining Trolley

First of all you should know the structure of the trolley
Hydraulic and mechanical can be selected. After analysis and comparison, the hydraulic type has low requirements for rigidity of the trolley frame, sensitive structure, light weight, low processing requirements and low elevation requirements of the laying track during construction, and is convenient to use, but Tunnel Trolley has high requirements for the self-locking of the hydraulic cylinder. The hydraulic cylinder in the lining does not Allow retraction.
The mechanical type is the opposite. Because one motor needs to drive several screw drives, the coaxiality of each drive shaft is required to be high, and the trolley frame must have greater rigidity, and the structure and size must be accurate. Due to the heavy structure and high processing requirements, And because the lead screw is synchronized action (unlike hydraulic transmission, each hydraulic cylinder can be synchronized or independently), when the track elevation error (each point is not at the same elevation) is large, it will directly affect the template orientation and then affect the lining quality .
After analysis and comparison, the hydraulic transmission plan is selected, and measures such as hydraulic lock and balance valve are adopted for the hydraulic cylinder to make the hydraulic cylinder self-locking; together, the screw organization is selected for mechanical determination, and the support of the template is strengthened to ensure that the template does not return during lining. Shrink without deformation. Practice has proved that it is reasonable to choose hydraulic type for lining trolley, which is the development direction.

product feature:

* It is widely be used in concrete construction of all kinds of special-shaped structures.
* The product is easy to use and flexible to disassemble.
* More times turnover, low cost amortization.
* The appearance of concrete is well quality.
* Save labor cost and reduce project cost.

Advantage:

● light weight; 
● simple, strong and stable structure; 
● moved, mounted and stripped easily; 
● strong reusability; 
● small deformation under force; 
● adequate space under traveler and providing a big space for bars and formwork construction operation.

Lijian Formwork is a professional manufacturing enterprise specializing in construction formwork, steel structure and mechanical equipment. It can provide construction enterprises with a series of high-quality services such as formwork and steel structure engineering technical consultation, scheme design, processing and production, sales, leasing and on-site technical guidance and installation.
The company is affiliated to Beijing Lijian Engineering Technology Co., Ltd., Shandong Lijian Formwork Co., Ltd., and Anshan Lijian Engineering Co., Ltd. The company's processing bases are located in Tai'an City, Shandong Province and Anshan City, Liaoning Province. Relying on advanced technology and strong processing strength, the company's business has developed rapidly. Since its establishment, the company has participated in hundreds of major domestic projects. The company's product system is widely used in infrastructure construction fields such as high-speed railways, subways, water conservancy, expressways, underground pipe corridors, and municipal engineering. It has the characteristics of reasonable structure, convenient operation, reliable quality and high cost performance. It has established a good cooperative relationship with China Railway, China Railway Construction, China State Construction, China Hydropower, China Communications Construction, China Power Construction and other construction companies.

The company's business has expanded to 15 provinces, cities and autonomous regions across the country, and exported to the United States, the United Arab Emirates, Cambodia and other countries. At the beginning of its establishment, the company took quality and technology as the foundation of the company, and took the lead in obtaining quality certification and applying for a number of national patents. Product quality stability and technological advancement are at the forefront of the industry.
The company takes "credibility first, users first" as its corporate purpose, "quality for survival, innovation for development" as its business philosophy, and wins the trust of construction units with innovative technology and high-quality services to create good economic and social benefits for them.

Value-added services:
Provide construction plan for civil engineering and cooperate with Bidding for Party A.
Provide early product design and the most cost-effective scheme.
After sales service and technical support during construction.
Free product improvement scheme.