GB25526-2010
Shaft boring machines - Safety requirements
矿用钻井机 安全要求
GB 25526-2010 is a current mandatory Chinese national standard for Shaft boring machines - Safety requirements. It appears in the Electronics compliance cluster with a product safety focus and has an implementation date of Oct 1, 2011.
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 is mandatory for the design, manufacturing, and operation of shaft boring machines used in mining applications. It specifically applies to raise boring machines, rotary table shaft drilling machines, and power head shaft drilling machines. It does not cover general hazards associated with standard mechanical, electrical, hydraulic, or pneumatic equipment unless specifically related to the boring machine's operation.
Technical requirements
The standard outlines comprehensive safety requirements across multiple operational domains. It mandates ergonomic design principles to minimize operator fatigue and requires protective measures against physical hazards such as crushing, high-pressure fluid injection, and falls from the drill rig. Manufacturers must ensure that all accessible hot or cold surfaces are equipped with guards to prevent thermal contact injuries. For control systems, the standard specifies that the main drive must only start via manual activation and requires the implementation of emergency stop devices at all operating positions. The control system must be designed to prevent unintended movements upon power restoration or hydraulic pressure drops. Interlocking systems are required to ensure operations can only be initiated from a single, clearly activated control point. The standard also details stringent requirements for operator cabins, including specific limits for internal temperature, noise levels, and vibration. Cabins must be equipped with air purification systems to maintain dust concentrations below specified thresholds and must utilize fire-retardant materials. Additionally, lifting devices must adhere to strict safety factors, with the maximum lifting force required to be no less than 1.3 times the rated lifting force, and braking systems must meet specific torque and response time criteria. Regarding environmental hazards, the standard mandates dust collection systems and spark prevention mechanisms for exhaust systems in potentially explosive atmospheres. For remote-controlled machines, additional safety layers are required, including independent controllers, comprehensive diagnostic systems, and automatic fire suppression systems for underground operations.
Testing methods
Compliance verification involves several key testing methodologies. Noise measurement at the operator's position must be conducted according to GB/T 13325. Vibration testing of the operator's seat is evaluated using methods referenced in GB/T 8419. Dust concentration levels around the machine and within the operator's cabin are measured following the procedures outlined in GB/T 5748.
FAQs
What types of drilling machines are covered under GB 25526-2010?
The standard specifically applies to shaft boring machines, including raise boring machines, rotary table shaft drilling machines, and power head shaft drilling machines used in mining operations.
Does GB 25526-2010 include requirements for remote-controlled drilling machines?
Yes, the standard includes a dedicated section for remote-controlled machines. It requires additional controllers, diagnostic systems, automatic fire suppression for underground use, and specific control system designs to ensure safety during remote operations.
What are the key safety requirements for the operator cabin?
Operator cabins must maintain specific temperature ranges, limit noise to 85dB(A), control vibration levels, and keep dust concentrations below 2mg/m3. They must also be constructed with fire-retardant materials and equipped with emergency escape routes and fire extinguishing devices.
The summary above provides a high-level overview of GB 25526-2010. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 25526-2010 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Safety
- CCS
- D91
- ICS
- 73.100
- Competent department
- Ministry of Industry and Information Technology
- Technical committee
- Ministry of Industry and Information Technology