NY/T 1004-2020 in English
VALIDTechnical specification of quality evaluation for stalk shredder
- Issued on:2020-07-27
- Implemented on:2020-11-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
Introduction
Core changes in the standard revision
| Revision dimensions | 2006 edition | 2020 edition | Technical significance |
|---|---|---|---|
| Scope of application | Corn/sorghum/wheat/rice | Added cotton straw | Adapt to diversified planting structure |
| Safety requirements | Dispersed regulations | Concentrated strengthening (including converted mechanism protection) | Reducing the accident rate of operations |
| Performance indicators | Life indicators of shredder blades | Cancel this indicator and strengthen the crushing length requirement | Focus on the core operation effect |
Analysis of key performance indicators
Crushing length classification control:Corn/sorghum straw ≤100mm (qualified rate ≥85%), wheat/rice/cotton straw ≤150mm. In actual operation, the test of Xinjiang cotton field showed that the qualified rate of crushing cotton stalks by hammer claw crusher must reach more than 88%.
Productivity calculation formula:Pure productivity = operating area/(pure operating time + field turning time), standard requirement ≥0.33hm²/(kW·h).
Key points of safety protection technology
- Transmission protection:Universal joint shield gap ≤6mm (in line with GB/T 23821)
- Fastener grade:Cutter shaft bolt ≥8.8, tightening torque deviation ≤5%
- Dynamic balance requirements:Cutter shaft group G6.3 balance, residual unbalance ≤15g·cm
Testing implementation suggestions
- Sampling plan:According to GB/T 2828.11, 2 units are selected when the base number is ≥10 units (1 for inspection and 1 for backup)
- On-site test:A flat test area of 50m×6 times the width, with a soil moisture content of 15-25%
- Data collection: Root stubble fibers should be excluded for stubble height measurement, 6 sampling points per stroke
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