GB/T 24503-2024 in English
VALIDDrive sprocket for chains (round link) for mining
- Issued on:2024-09-29
- Implemented on:2025-04-01
- File Format:PDF
- Delivery:Via email within 8 business days
$621.00
| Standard No: | GB/T 24503-2024 |
| Document status: | VALID |
| Title in English: | Drive sprocket for chains (round link) for mining |
| Title in Chinese: | 矿用圆环链驱动链轮 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 8 business days |
| Issued on: | 2024-09-29 |
| Implemented on: | 2025-04-01 |
| Superseding: |
GB/T 24503-2009 Mining-drive sprocket for chains(round link)
|
| ICS Classification: | 73.100.40-Haulage and hoisting equipment |
| Chinese Classification: | D93-Promotion, storage and transportation equipment |
| Professional Classification: | GB-National Standard |
| Related Keywords: | drive sprocket
compact chain drive round link chain/compact chain compact chain drive sprockets sprocket teeth |
| Related Topics: | ring diameter
round link chain sprocket sprocket rings within rings GB/T 24503-2009 ring sprocket Ring chain sprocket Ring chain sprocket |
《GB/T 24503-2024矿用圆环链驱动链轮》由603（中国煤炭工业协会）归口，主管部门为中国煤炭工业协会。
Introduction
Analysis of the key points of the standard revision
| Revision items | 2009 version | 2024 version | Technical impact |
|---|---|---|---|
| Sprocket type | Type 2 | New compact chain drive sprocket | Expanded to 42×146~60×181/197 specifications |
| Heat treatment requirements | HB250-290 | HB280-320 | Improve wear resistance |
| Inspection equipment | Traditional measuring tools | Add laser 3D scanner | Measurement accuracy reaches 0.02mm |
Key parameter specifications
Mechanical performance requirements
| Chain specifications | Tensile strength (MPa) | Impact value (J) | Hardened layer depth (mm) |
|---|---|---|---|
| ≤18×64 | ≥610 | ≥50 | ≥3 |
| 52×170 | ≥1200 | ≥100 | ≥16 |
Implementation and application suggestions
Sprocket selection process
- Determine the chain type (round link chain/compact chain)
- Select the number of sprocket teeth (5-10 teeth) according to the power of scraper conveyor
- Calculate the pitch circle diameter according to the formula in Table 3:
D₀ = p / sin(90°/N) + d / cos(90°/N)
Common problem handling
- Early wear of chain nests: Check whether the quenching hardness reaches HRC50-60
- Abnormal meshing noise: Measure the deviation of the chord length of adjacent chain nests (see Table B.1)
Technical evolution analysis
This standard introduces the technical requirements of compact chain drive sprockets for the first time, reflecting the trend of mining equipment towards high power and high load. The newly added laser scanning detection method increases the efficiency of traditional gauge detection by 40%, laying the foundation for intelligent quality inspection.
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