GB5144-2006
Safety code for tower cranes
塔式起重机安全规程
GB 5144-2006 is a current mandatory Chinese national standard for Safety code for tower cranes. It appears in the Electronics compliance cluster with a product safety focus and has an implementation date of Oct 1, 2007.
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 technical requirements for the design, manufacturing, installation, operation, maintenance, and inspection of tower cranes. It is applicable to various construction tower cranes, while other types of tower cranes may refer to it for execution. It does not apply to truck-mounted, tire-mounted, or crawler-mounted tower cranes. Engineers involved in the export of construction machinery to China must verify if their equipment falls under this specific category.
Technical requirements
This standard comprehensively regulates the structural integrity, mechanical components, and safety devices of tower cranes. For structures, it specifies material requirements, welding and bolting connections, and detailed dimensions for ladders, platforms, and guardrails. Manufacturers must ensure structural scrap criteria and working life limits are strictly calculated and documented. For mechanisms and components, it outlines the requirements for wire ropes, hooks, drums, pulleys, brakes, and wheels, including specific end-of-life discard parameters. The standard mandates the installation of critical safety devices, such as load moment limiters, weight limiters, travel limit switches, and rope anti-detachment guards. These safety devices must automatically cut off power to hazardous movements when limits are exceeded. Additionally, it sets forth requirements for the control systems, mandating ergonomic layouts and specific operating forces for handles and pedals. Electrical systems must feature reliable grounding, short-circuit protection, and emergency power-off switches. The standard also specifies safety distances from overhead power lines and minimum spacing between multiple cranes operating on the same site. Compliance with these spatial safety distances is mandatory for site setup approval. Finally, it outlines requirements for the hydraulic system, concrete and crushed stone foundations, and track laying tolerances.
Testing methods
Testing and evaluation procedures primarily reference GB/T 9462 for general technical conditions, including type testing, factory inspection, and routine inspection. The standard requires specific tests for structural load-bearing capacity, such as applying a 2000N force via a 125mm disc on platform surfaces. Electrical insulation resistance must be tested (minimum 0.5MΩ for main circuits), and collector rings must undergo withstand voltage tests. Manufacturers must conduct specialized tests for newly designed mechanisms and safety devices before installation.
FAQs
What products are regulated under GB 5144-2006?
GB 5144-2006 applies to various construction tower cranes. It does not apply to truck-mounted, tire-mounted, or crawler-mounted tower cranes.
Are there any updates from the previous version of GB 5144?
The 2006 version incorporates relevant content from international standards such as ISO 7752-3:1993 and ISO 11660-3:1999. It also adds requirements for self-erecting tower crane section adding, frequent disassembly connections, and traceable permanent marking of structural parts.
Is compliance with GB 5144-2006 mandatory?
The standard contains both mandatory and recommended provisions. While it references some international ISO standards for control layout and access, it includes specific Chinese national requirements for structural scrap criteria, foundation stability, and mandatory safety devices that must be strictly followed.
The summary above provides a high-level overview of GB 5144-2006. To ensure complete compliance for your tower cranes entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 5144-2006 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Safety
- CCS
- J80
- ICS
- 53.020.20
- Competent department
- Ministry of Industry and Information Technology
- Technical committee
- Ministry of Industry and Information Technology
Relationships
Replaces:GB 5144-1994