Haite Hydraulic has been deeply involved in the tunneling equipment industry for more than ten years, making every effort to be a comprehensive hydraulic transmission and control system supplier in the industry. Through continuous development of energy-saving and efficient tunnel boring machine hydraulic systems, Haite has become a leading enterprise in R&D and manufacturing for a full range of hydraulic cylinders for tunnel boring machinery with a global market share of over 60%.
Tunnel boring machinery is working continuously underground and will meet harsh conditions of severe vibration large lateral loads, complex gravel environments poor heat dissipation conditions and difficult maintenance conditions.Once the tunnel boring machine fails, it will bring huge losses to the construction company.All these raise high requirements for structural fatigue resistance, coating impact and corrosion resistance,and the seal structure anti-contamination performance.
During the past years, Haite is doing intensive research based on the above requirement and achieved great results: Nickel-chromium coating with strong impact and corrosion resistance, copper alloy overlay guiding bush can bear high lateral force. In order to ensure the reliability of the hydraulic cylinder structure, Finite Element Method (FEM) is adopted check and verify structure parts static load and fatigue strength, improving the safety factor and fatigue strength of critical parts.
Tunneling boring machinery equipped with Haite hydraulic cylinders has successfully completed various projects around the world and Haite brand has won market trust and recognition with excellent quality. Haite is on the way to become a world-known leading enterprise in R&D and production of tunnel boring machinery hydraulic cylinders.
Quality Control
1. We use Solidworks to design cylinders and do force analysis.
2. Inspection process: incoming inspection, sampling inspection, process inspection and pre-shipment inspection.
3. Before the production, we will do chemical composition tests. The uninspected materials are stored in special positions and all inspected materials are able to be traced by size, supplier and date.
4. During the production, the process cards are placed around to make sure that the workers understand every step clearly. The products are marked for tracking.
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