Oct. 01, 2023
For PCB board of the subrack insertion and extraction, Provides assistance when pulled out.Composed of four parts: handle, scutcheon, printed board bracket, and shaft. Handle material: PC+GF20%, Fire retardant standard: UL94V1, printed board bracket material: die-cast zinc alloy surface nickel plating. scutcheon material: 6063T5, Shaft material: brass.
Lightweight is a point that engineers cannot avoid when making products. Lightweight refers to reducing weight, reducing energy consumption, leaving space for more functions, and increasing user experience while ensuring use.
The two common ways to achieve lightweight are to change the basic material and change the structural method, which can be carried out alone or in combination.
For example, most aircraft bodies use carbon fiber materials, rockets use ceramic materials, and cars use lightweight aluminum materials.
If achieving lightweight not only does not reduce product performance, but also makes the product safer, more secure, and improves product quality, then what reason do we refuse lightweight?
Based on the market demand for lightweight and high assembly accuracy of subrack, our technical team has continuously invested in this direction in recent years and achieved certain results. Our core product subrack has significantly reduced weight through structural redesign, while also providing higher strength and firmer performance. We call it EK+ subrack.
Characteristics of EK+ subrack:
Modular, lightweight, miniaturized, higher assembly accuracy, high reliability (anti vibration, impact, EMC design, heat dissipation design, IP protection design).
EK+ subrack cross-sectional view
Referenced technical standards:
(1) GB/T 25119-2010 Electronic Devices for Rail Transit Rolling Stock
(2) GB/T 19520/IEC60297 Mechanical Structures of Electronic Equipment 482.6 mm (19 in) Series
(3) GB/T24338.4-2018 Electromagnetic Compatibility for Rail Transit Rolling Stock Equipment
(4) ISO 9001 Quality System - Quality Assurance Module includes design, development, production, installation, and after-sales stages
(5) EN61373 Railway Applications - Rolling Stock Equipment Impact and Vibration Testing
(6) EN50126 1 Railway Applications - Explanation and Demonstration of Reliability, Availability, Maintainability, and Safety (RAMS) (7) GB/T 1804-m General Tolerances, Undeclared Tolerances for Linear Dimensions
(8) EN45545-2013 Standard for Fire Testing of Railway Vehicles
(9) GB T 3138-2015 Surface Treatment of Metal and Other Inorganic Coatings
Verification requirements:
(1) Environmental temperature: -40 ℃~+70 ℃; Relative humidity (monthly average minimum temperature of 25 ℃) ≤ 95%; Altitude ≤ 3600m; Seismic intensity: The highest peak acceleration is 0.3g.
(2) Low temperature test reaches -40 ℃ without fracture.
(3) High temperature test without deformation or softening.
(4) Low temperature storage test without fracture, aging, or discoloration.
(5) The vibration and impact test reaches Class 1, Level B.
(6) Ensure that the protection level meets at least IP20 level (after assembling the entire machine)
(7) Electromagnetic compatibility, alternating humidity and heat test, fire performance requirements, material heat release rate test, and combustion heat test requirements meet national standard requirements.
Oct. 01, 2023
For PCB board of the subrack insertion and extraction, Provides assistance when pulled out.Composed of four parts: handle, scutcheon, printed board bracket, and shaft. Handle material: PC+GF20%, Fire retardant standard: UL94V1, printed board bracket material: die-cast zinc alloy surface nickel plating.
Oct. 08, 2023
The subrack does not have a series of profiles, and after receiving an order, it is usually customized and processed according to the drawings. Products from different customers and products of different specifications from the same customer all need to be redesigned and processed, resulting in higher costs;