Product introduction: I. Overview Point-line meshing gear transmission is a brand-new transmission type. It was listed as the key technology promotion project of the National·Ninth Five-Year Plan in September 1999. The point-line meshing gear is followed by the involute gear and the arc. Another new gear that appears in the future of gears - DQJ, DQJD series point line meshing gear reducer
I. Overview
Dot-line meshing gear transmission is a brand-new transmission type. It was listed as the key technology promotion project of the National·Ninth Five-Year Plan in September 1999. The point-line meshing gear is another one after the involute gear and the circular gear. A new type of gear-DQJ, DQJD series point-and-line gear reducer. It is our company's point-to-line gear transmission technology applied to the medium-hard tooth surface crane reducer. Successfully developed according to JB/T10468-2004 The standard series of high-grade and high-tech added value.
Its basic features are:
1) International advanced technology level;
2) Outstanding advantages.
3) high performance price ratio;
4) Long service life and high reliability.
Second, the performance characteristics
The point line meshing gear has the involute line meshing and the point meshing of the involute convex tooth profile and the transition curve concave tooth profile contact. Therefore, the reducer has the advantages of both the involute gear and the arc gear.
1) High carrying capacity. It is 1-2 times better than the same involute gear reducer. Pass the same power. Specifications can be small 2 files. The weight can be reduced by nearly half.
2) Due to the involute line meshing of the teeth and the concave tooth profile are also generated by the formation. Therefore, the gear has a separable, 睦. The center distance error and the cutting depth error do not affect the transmission and strength. This feature is superior to arc gears.
3) High strength. Under normal manufacturing precision, it is easy to achieve 100% tooth width. The contact tooth distribution is relatively uniform, and the gear teeth will not break. The destructive test shows that the gear tooth break type breaks along the entire tooth width at the 30°C tangent. . This performance is superior to involute gears and arc gears.
4) The noise is low. Because the gear teeth mesh with the end face coincidence degree and the axial coincidence degree, the total coincidence degree is large. High contact accuracy, smooth operation, noise can be 5-10dB lower than the inaccurate gear reducer of the same precision (A) {comparable to the involute gear reducer with 6-precision grinding teeth). And the higher the load, the lower the noise [full load can be 2-3dB (A) lower than the light load]}. The reason for the low noise of the point line meshing gear is that in addition to the large total coincidence degree, there are factors such as low meshing rigidity and small meshing angle.
5) It is easy to form oil film when used for reduction drive. Friction and wear under working conditions. long lasting.
6) High transmission efficiency. The single level can reach more than 98%, and the second level can reach more than 97%.
The shape of the DQJ (DQJD) series reducer is the same as that of the QJ (QJD) series. From the conservative point of view, the load capacity can be increased by one gear, and the same power can be transmitted, and the weight can be reduced by about 30%. At the same time, for the convenience of selection. The nominal transmission ratio has been extended from the original R10 series to the R20 series.
The b input and output shaft ends of the crane hoist mechanism reducer are on the same side. Connected to the motor and the reel respectively. The center distance of the reducer should not be too small. When using a hardened gear reducer. Often it will result in carrying capacity and equivalent waste (the structure is not allowed to be small),
At this time, the DQJ series point-line gear reducer can meet the requirements of strength, life and reliability, and the cost can be reduced.
Third, the scope of application
1) Gear peripheral speed <16m/s:
2) High speed shaft speed <1500r/min;
3) Working environment temperature is -40 ° C - + 50 ° C;
4) It can be operated in both forward and reverse directions.
Suitable for lifting and transportation. In the activities of various mechanical equipment such as metallurgy, chemical industry and light industry.
