GB/T 2778-2007 in English
VALIDPower take-off pulley for agricultural tractors—Peripheral speed and width
- Issued on:2007-07-30
- Implemented on:2007-11-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$59.00
《GB/T 2778-2007农业拖拉机动力输出皮带轮 圆周速度和宽度》由TC140（全国拖拉机标准化技术委员会）归口，主管部门为中国机械工业联合会。
本标准规定了农业拖拉机动力输出皮带轮的圆周速度、传递功率和轮缘宽度。 本标准适用于农业轮式和履带拖拉机。
Introduction
Interpretation of the standard for power output pulleys for agricultural tractors
Background and significance of the standard
GB/T2778-2007 "Circumferential speed and width of power output pulleys for agricultural tractors" is a major revision of the 1992 version, aiming to meet the development needs of modern agricultural machinery. The new standard eliminates the reliance on reference standards and replaces it with a scientific calculation method based on the engine speed corresponding to the standard speed of the power output shaft, while clarifying the technical requirements for the rim width.
Analysis of technical specifications
Determination of circumferential speed
According to the standard, when the engine speed corresponds to the standard speed of the power output shaft, the circumferential speed of the pulley is 16 m/s ±1 m/s. This parameter directly affects the power transmission efficiency and the stability of equipment operation. 25
Analysis of Practical Application and Technological Evolution
In modern agricultural machinery, the performance of the power output pulley directly affects the working efficiency and service life of the tractor. By optimizing the circumferential speed and rim width design, the power transmission efficiency can be effectively improved and energy consumption can be reduced.
Implementation Suggestions
- Select the pulley model strictly in accordance with the standard to ensure that it matches the tractor engine speed;
- Check the wear of the pulley regularly and replace it in time to avoid excessive wear;
- When designing new models, refer to this standard and make optimization adjustments based on actual working conditions.
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