GB21011-2007
Mine manriding cars with narrow gauge - Safety requirements
矿用人车 安全要求
GB 21011-2007 is a current mandatory Chinese national standard for Mine manriding cars with narrow gauge - Safety requirements. It appears in the Electronics compliance cluster with a product safety focus and has an implementation date of Jan 1, 2008.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard specifies the safety requirements for mine manriding cars with narrow gauge, including both flat roadway manriding cars and inclined shaft manriding cars. It is mandatory for all manufacturers producing narrow-gauge human transport vehicles for Chinese mines. The standard addresses hazards arising during the entire lifespan of the equipment, referencing general mechanical safety principles from GB/T 15706.1 and GB/T 15706.2.
Technical requirements
The standard outlines comprehensive safety measures focusing on ergonomic design to prevent operator fatigue and injuries. It mandates that car bodies must be free of sharp edges and protruding parts. The underframe must withstand specific static load tests without permanent deformation or weld cracks. For critical components, the standard sets stringent strength criteria. Traction rods, connecting devices, and pins must undergo tensile testing to ensure they do not break under extreme loads. Furthermore, key parts like holding claws and wedge boxes must pass non-destructive testing according to JB/T 4730.3 and GB/T 15822. The standard also details requirements for buffering and damping devices. Buffer resistance values must be calibrated, and components must not deform or fail under specified test loads. Buffer wood and steel wires must meet specific material and structural criteria to ensure reliable shock absorption. Braking system performance is heavily regulated, especially for inclined shaft manriding cars. The standard specifies requirements for braking empty stroke time, average braking deceleration, and the functionality of manual braking devices. Inclined shaft cars must be equipped with reliable flat-track locking devices to prevent accidental braking.
Testing methods
- Static Load Testing: Evaluates the permanent deformation and weld integrity of the car underframe and holding claws under multiplied maximum static loads. - Tensile Testing: Assesses the breaking strength of main traction rods and connecting devices. - Non-Destructive Testing (NDT): Utilizes ultrasonic and magnetic particle methods to detect internal and surface flaws in critical metal components. - Buffer Calibration: Measures and records resistance values of buffer devices to ensure consistent shock absorption performance. - Zero-Speed Uncoupling Test: Conducted on a test bench to verify the braking system's engagement, deceleration rates, and the synchronization of holding claws or inserting claws.
FAQs
What products are regulated under GB 21011-2007?
GB 21011-2007 applies to mine manriding cars with narrow gauge, specifically categorized into flat roadway manriding cars and inclined shaft manriding cars used in mining operations.
Is GB 21011-2007 a mandatory standard?
Yes, all technical content within GB 21011-2007 is mandatory for manufacturers supplying these vehicles to the Chinese mining industry.
What are the key safety focuses of this standard?
The standard primarily focuses on structural integrity, braking system reliability, buffering device performance, and the tensile strength of traction and connecting mechanisms to prevent derailments and operational failures.
The summary above provides a high-level overview of GB 21011-2007. To ensure complete compliance for your mine manriding cars entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 21011-2007 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Safety
- CCS
- D93
- ICS
- 73.100.40
- Competent department
- Ministry of Industry and Information Technology
- Technical committee
- Ministry of Industry and Information Technology