Some wire mesh gear transmission is a kind of brand-new 1driving form in September 1999 were classified as a national the ninth five-year plan ", major s&t promotion projects. Point, line and meshing gears is the involute tooth dry, the circular gear appeared again after a new gear - DQJD series point, line, DQJ meshing gear reducer. Is my company will point, line and meshing gears transmission technology is applied to hard-toothed surface crane reduction in the field. T10468-2004 according to JB/successfully developed developed on the scale of grade, high technology. The value of standard series product. Its basic characteristics are

1) international advanced technology level,

2) outstanding qualities.

3) the high ratio of performance to price,

4) long service life, high reliability.

Second, performance characteristics

Some wire mesh exist simultaneously involute gear meshing line and the involute tooth profile and transition curve protruding sunken tooth profile contact point meshing. Thus the involute gear reducer concurrently with circular arc gear two reducer advantages.

1) high bearing capacity than the same. Involute gear reducer to improve 1-2 times. Pass the same power. Specifications may be small pot 2. Weight can reduce nearly half.

2) due to the existence of involute gear meshing line and concave tooth profile is generated by generative. Therefore gear is divisible, agree. The center distance error and teeth depth does not affect the transmission error and intensity. This feature than circular gear.

3) high strength. In general the manufacturing precision under easy to achieve 100% inch-wide teeth gear to contact load distribution is evener, gear won't produce difficuh Angle broken, destructive testing showed cog in the broken type in 30 ℃ tangent place along the entire inch-wide teeth fracture. This performance than the involute gear and circular gear.

4) low noise, because of gear teeth mesh exist at the end of coincidence degree and coincidence degree, so total axial coincidence degree. Contact with high accuracy, smooth operation, the noise is comparable with the precision of the involute gear reducer low 5-10dB (A) {comparable level 6 precision grinding gears of involute gear reducer is low still). And has the load is taller, the lower noise characteristics of light load [loaded with comparable again low 2-3dB (A)]}. Some wire mesh low noise reasons except the total coincidence degree big outside, still have a mesh stiffness is low, the meshing Angle small factors,

5) to decelerate transmission easily when forming oil film. Work condition friction wear small. Long service life.

6) of high transmission efficiency. Single stage reached 98%, secondary 97% above.

DQJ (DQJD) series reducer installation dimensions and the appearance of the same QJD) series (QJ, from conservative point considered by carrying capacity of spy selection, relay also improve power, weight can reduce 30%. Meanwhile, in order to choose convenient. Nominal transmission ratio by original R10 series expansion for the R20 series.

Crane hoisting mechanism of car b into and gear reducer output shaft client in the same side. Respectively with the motor and drum ingrafting. Reducer centre distance shoulds not be too small. When using hard-toothed surface reducer. Often causes bearing capacity and equivalent to waste (structure does not allow small),

When using DQJ series point, line and meshing gear reducer can satisfy the intensity, life and reliability requirements, but also can reduce cost is regarded as the best choice.

Three, application scope

1) gear circumference speed < dedicated 16m/s:

2) high speed shaft speed < 1500r/min,

3) working environment temperature of 40 to 50 ℃; ℃ -

4) can be both the positive and negative to operate.

Suitable for lifting transportation. The metallurgy, chemical industry and light industry etc all kinds of mechanical equipment in the event agencies.