【正文】 this new stable motion speed reducer gear and domestic and foreign had the speed reducer gear pares, has the following characteristic: (1) velocity ratio scope is big, gets up from I=10, may reach most greatly several manufactures the great velocity ratio the reduction gear, then demonstrates this reduction gear the merit.(2) transmission power scope is big: And may connect a body manufacture with the electric motor. (3) structure simple, the volume small, the weight is about 1/3 pared to the existing speed reducer gear.(4) mechanical efficiency is (5) this reduction gear input axis and the output shaft are on the identical spool reduction gear see Table 1 with other reduction gear performance parison. Because lacks the data, various reduction gears power/load ratio which in the table arranges in order is most superior.? Table 1? Each kind of reduction gear parison model power (kw) reduction gear ratio quality (kg) QI450? 93 1820 ZSY250? 95 540 NGW92 577 SEW (Germany)? 90 1300 NP100? 100 30 400 Note: NP100 is in the stable motion speed reducer gear, the SEW reduction gear quality contains the electrical . this project key technologies? May know by Figure 2, in “stable motion speed reducer gear is by annular gear Z2, external gear Z1 and the parallelogram anization bination transmission principle is: The electrical machinery input rotary motion, the external tooth crop rotation parallel migration, its center of circle path is a circle, makes the dead axle rotation with it meshing annular gear. Because external tooth crop rotation parallel migration, therefore name stable motion gear gear parallel migration needs to have the auxiliary body help realization, may use (6~12) to sell the axis, the roller takes the hypothesized auxiliary stable motion anization, also may use the eccentric shaft to take the entity auxiliary stable motion the stable motion speed reducer gear key technologies and the essential craft are the position parallelogram ponent size putation and the request processing precision, the gear teeth main parameter choice. These factors will all affect the transmission ability and the transmission speaking, the group cost reduction gear various spare parts all request to have the high precision, they will be deciding the reduction gear overall transmis3. this project survey this project has obtained the Chinese practical new patent, the patent number: ? .? This project trial produced the first prototype from 1995 (power , after velocity ratio I=32), with some factory and mine cooperation, has one after another designed following several kind of different powers, the different velocity ratio reduction gear.(1) electrically operated on rollers gate uses the reduction gear, power 550W, velocity ratio I=26, is united as one body with the electrical quality. (2) mixer uses the reduction gear, power 370W, velocity ratio I=17.(3) some military goods use two kind of reduction gears, one kind of power 370W, velocity ratio I=。 Below I introduce our country reduction gear the development present situation First, the domestic reduction gear many by the gear drive, the worm drive primarily, but has the power and the load ratio generally is small, or velocity ratio great and mechanical efficiency excessively low , in the material quality and the technological level also has many weakness, the largescale reduction gear question is specially more prominent, the service life is not domestic use largescale reduction gear (above 500kw), many from overseas (for example Denmark, Germany and so on) imports The 6039。 5. Test reducer subdivision surface, the contact surface and seal, oil spills are not allowed. SplitTu allowed to paint or water glass seal and allow the use of any filler。 3. Use