T/CI 046-2023 Active

Scope: This document specifies the basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation, and storage of hydraulic cylinders for rail-guided vehicles (hereinafter referred to as "hydraulic cylinders"). This document applies to hydraulic cylinders used on trailers in logistics and warehousing applications. Main technical content: 5. Technical requirements - The type and dimensions of the threaded connection oil ports on the hydraulic cylinder shall comply with the provisions of GB/T 2878.1. - The appearance quality shall clearly indicate the function of the oil port near all connection oil ports on the hydraulic cylinder. - The coating on the exposed non-processed surfaces of the hydraulic cylinder shall be uniform and consistent in color. The pre-treatment of the surface shall not be coated with grease. The surface shall not have scratches or cracks. - Internal cleanliness: The internal cleanliness of the hydraulic cylinder shall comply with the provisions of JB/T 7858. Performance requirements: 5.4.1 Minimum start-up pressure: The minimum start-up pressure of the hydraulic cylinder shall not exceed 0.3 MPa. 5.4.2 Load valve adjustment performance: When the hydraulic cylinder is pressurized to the set pressure of the load valve, the load valve shall open normally, and the oil shall flow from one chamber of the hydraulic cylinder to the other. 5.4.3 Internal leakage: Within 10 minutes, the piston movement caused by internal leakage of the hydraulic cylinder shall not exceed 1 mm. 5.4.4 Sealing performance: Under rated working conditions, there shall be no leakage at the static sealing point of the hydraulic cylinder, and no dripping at the dynamic sealing point. 5.4.5 High-temperature resistance: After the 80℃ heating test, all components of the hydraulic cylinder shall function normally. 5.4.6 Pressure resistance: When the hydraulic cylinder is subjected to a pressure of 1.25 times