―70 gear oil; 150150 gear oil=4 double arc gear; 105-m=6 double arc gear Table 1 is the noise value of 104 double arc gear and 105 double arc gear before opening. It can be seen from Table 1 that for 14 double arc gears, the noise value when using 150 gear oil as the lubricant is smaller than when using 70 gear oil as the lubricant (for example, when the load is l%m and the rotation speed is 1489r/min). When using 150 gear oil as the lubricant, the noise value is 98.5dB(A); with 70 gear oil as the lubricant, the noise value is 102.7dB(A). The difference between the two is 4dB); for 105 double arc There is no significant difference between gears, 150 gear oil as lubricant and 70 gear oil as lubricant.
It is the noise comparison curve before and after the opening of the 104 double arc gear when the load is 196Nm; it is the noise contrast curve before and after the opening of the 150 double arc gear when the load is 588Nm; it is the 104 double arc gear When the load is 392N.m, the comparison curve of the vibration before and after the opening is made; the vibration contrast curve of the 105 double-arc gear before and after the opening is 392Nm.
From the noise comparison curve, it can be seen that for the 105-cavity double-arc gear, it is better to use 70 gear oil as the lubricant than to use the 150 gear oil as the lubricant (for example, when the speed is 960r/min, both With a difference of about 6dB), especially at high speed (more than 000r/min), if 150 gear oil is used as the lubricant, the noise reduction of the 105-hole double-arc gear not only disappears completely, but the noise is more than the ordinary double-arc gear. The height is l~2dB. That is to say, different lubricants have different effects on the noise and vibration of the double arc gear of the hole.
It can be seen from the above that 70 gear oil is not ideal as a lubricant for ordinary double-circle gears, but it has good vibration and noise reduction for the double-point gears of the fork hole. For example, when the load is 196 Nm and the speed is 1480 r/min, 70 gear oil is used as the lubricant. The noise value of the 104 double-circle gear is 102.5 dB(A), and the noise value of the 104-fork double-lens gear is 96 dB ( A); Under the same working condition, the 15040 gear oil is used as the lubricant, the noise value of the 14 double-circle gears is 98.2dB(A), and the noise value of the 104-pitch double-round gears is 97.5dB(A). Therefore, the same lubricant has different effects on the dynamic characteristics of the same double-round gears before and after opening.
From the overall test, it is ideal to use 70 gear oil as the lubricant for the hole double round gear. Of course it would be better to use other lubricants in certain situations.
The solid line is before the opening; the broken line is the opening before the solid line is the opening; the dotted line is the opening of the double circular arc gear before and after the opening of the double circular arc gear. Curve 4 concludes that the lubricant has a great influence on the dynamic characteristics of the double-circle orphan gear of the fork hole and the hole. The effect of different lubricants on vibration and noise reduction is also different. If the lubricant is not well selected, the vibration and noise reduction effects of the double-circle gears of the fork hole and the hole not only disappear completely, but also the noise of the ordinary double-circle gear is higher under the high-speed heavy load.
The same kind of lubricant has different effects on the dynamic characteristics of ordinary double-circular gears and the dynamic characteristics of forks and holes. Therefore, the experience of selecting a conventional double-circle gear lubricant cannot be used to determine the lubricant for the fork and the hole double-round gear.
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