GB/T 31258-2024
General technical conditions for zip lines (English Version)
- Standard No.
- GB/T 31258-2024
- Language
- Chinese, Available in English version
- Release Date
- 2024
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China CN / GB
- Latest
- GB/T 31258-2024
- Replace
- GB/T 31258-2014
- Introduction
In-depth interpretation of the National Standard of the People's Republic of China GB/T 31258—2024 General Technical Requirements for Zip Ropes
1. Background and significance of the standard update
GB/T 31258 was revised in 2024 for the first time since its release in 2014. This revision mainly targets the technological progress and safety needs of the zip line industry, and introduces stricter safety regulations and advanced design concepts. The new standard focuses on strengthening the technical requirements for wire ropes, sliding equipment and braking devices to ensure the safety of the operation of amusement facilities.
Clause content 2014 version requirements 2024 version update Minimum diameter of wire rope Load-bearing rope shall not be less than 8mm, traction rope shall not be less than 4mm Load-bearing rope shall not be less than 12mm, traction rope shall not be less than 6mm Pulley brake requirements Single set of brake device At least two independent brake devices Safety distance specifications When the local speed is ≤1m/s, the safety distance shall not be less than 300mm Generally required to be ≥1.5 meters, in special cases it can be appropriately reduced but not less than 300mm 2. Interpretation of key technical points of the standard
2.1 Specifications for the use of wire ropes
The load-bearing rope must be a line contact or surface contact wire rope with a diameter of not less than 12mm. The inclination angle of the load-bearing rope of the unpowered traction cable should not exceed 15 degrees to ensure the safety of the equipment operation.
Keyword explanation: The load-bearing rope is a key component that supports the weight of the pulley and passengers, and its safety directly affects the reliability of the entire cable system. Using high-specification wire ropes and strictly controlling the ratio of the bending diameter to the wire rope diameter during installation (not less than 30) can effectively avoid damage.2.2 Requirements for Sliding Equipment
The passenger restraint device must be a full-body design that cannot be opened by itself to prevent accidental escape. The depth of the rope groove of the pulley should not be less than 1/3 of the nominal diameter D of the wire rope, and the side plate should not rub against the wire rope to ensure smooth operation of the wire rope.
Practical application: During the design and installation process, the appropriate pulley size should be selected and the wear of the pulley should be checked regularly. The use of secondary protection measures such as anti-slip groove devices can significantly reduce safety hazards.2.3 Braking and Buffer System
Each zipline arrival station must be equipped with no less than two independent automatic braking devices to ensure smooth deceleration of passengers. The buffer pad size requirements are height × width ≥2m×2m, thickness ≥400mm.
Keyword explanation: The design of the braking system must take into account both rapid response and gentle braking in emergency situations to avoid impact on passengers. Soft sponges should be selected as cushion materials to absorb impact energy to the greatest extent.2.4 Installation and inspection requirements
The site selection of the zipline route must avoid dangerous areas such as military restricted areas and power line protection areas. The basic engineering design must comply with the provisions of GB 50010 and GB 50007 to ensure structural stability.
Implementation suggestions: During the construction process, geological exploration and foundation treatment should be carried out in strict accordance with standard requirements. Select a professional team to be responsible for the installation work to avoid safety hazards caused by improper operation.3. Implementation Suggestions
3.1 Equipment Selection and Procurement
Give priority to steel wire ropes that meet the GB/T 8918 and GB/T 26722 standards to ensure that their mechanical properties meet the requirements of cableway operation. It is recommended to purchase equipment through formal channels and request relevant quality certification documents.
3.2 Daily Maintenance and Inspection
- Carry out a surface inspection of steel wire ropes at least once a month, and replace steel wire ropes that reach scrap standards in a timely manner.
- Perform functional tests on pulleys, brakes and buffer pads regularly to ensure that they are in good condition.
- Check the effectiveness of passenger restraints to prevent failure due to wear or aging.
3.3 Emergency Plan Development
Establish a sound emergency management system and equip it with necessary rescue equipment. Organize employees to conduct emergency drills regularly to improve their ability to deal with emergencies.
4. Conclusion
The release and implementation of GB/T 31258—2024 marks that the zipline industry has entered a new era of safety. By strictly implementing the various technical requirements and specifications in the new standard, the safety of equipment can be effectively improved and the safety of life and property of tourists can be protected.
Related companies and institutions should attach great importance to standard updates, adjust production and inspection processes in a timely manner, and ensure that products and services meet the latest requirements. In the future, with the continuous advancement of technology and changes in industry needs, the zipline standards will be further improved to provide more powerful technical support for the development of the industry.
GB/T 31258-2024 Referenced Document
- GB 50007 Code for design of building foundation
- GB 50009 Load code for the design of building structures
- GB 50010 Code for design of concrete structures
- GB 50017 Steel Structure Design Standards
- GB 50135 Design Standards for Towering Structures
- GB/T 13384 General specifications for packing of mechanical and electrical product
- GB/T 20050-2020 Inspection and testing specifications of large-scale amusement device—General principles
- GB/T 20306-2017 Amusement devices terminology
- GB/T 26722 Steel wire ropes for ropeway
- GB/T 34370.9 Nondestructive testing of amusement equipments—Part 9: Magnetic flux leakage testing
GB/T 31258-2024 history
- 2024 GB/T 31258-2024 General technical conditions for zip lines
- 2014 GB/T 31258-2014 Specifications of strop
