Since the 1960s, my country has successively formulated standards for a number of general-purpose gear reducers . In addition to the self-made matching use by the OEM, a number of professional gear reducer manufacturers have also been formed. . At present, there are hundreds of enterprises producing reducers in the country, with an annual output of about 250,000 general-purpose reducers, which have contributed to the development of my country's mechanical products.
Most of the reducers in the 1960s were made with reference to the technology of the Soviet Union in the 1940s and 50s. Although they have developed later, they are limited to the design, technological level and equipment conditions at that time, and their overall level is far from the international level. .
Since the reform and opening up, my country has introduced a number of advanced processing equipment, and gradually mastered the design and manufacturing technology of various high-speed and low-speed heavy-duty gear devices through the introduction, digestion and absorption of foreign advanced technology and scientific research. Material and heat treatment quality and gear processing accuracy have been greatly improved. The manufacturing accuracy of general cylindrical gears can be increased, and the manufacturing accuracy of high-speed gears can be stabilized at 4-5 level. After some reducers adopt hard tooth surfaces, the volume and mass are obviously reduced, and the carrying capacity, service life, and transmission efficiency have been greatly improved, which plays a great role in energy saving and improving the overall level of the host.
The power of the high-speed gear reducer (increaser) designed and manufactured by our country has reached 42000kW, and the gear circumferential speed has reached more than 150m/s. However, the technical level of most reducers in my country is not high, and old products cannot be replaced immediately. The coexistence of new and old products will take a long time.
There are many types of machinery, and there are endless styles. What is the role of a gear reducer? How does it work? Briefly, the reducer is a relatively precise machine. The purpose of using it is to reduce the speed and increase the torque. It has a wide variety of different models, and different types have different usage classifications:
1. Reduce the speed and increase the output torque at the same time. The torque output ratio is the motor output multiplied by the reduction ratio, but it should be noted that the rated torque of the reducer cannot be exceeded.
2. Deceleration reduces the inertia of the load at the same time, and the reduction in inertia is the square of the reduction ratio. You can see that a general motor has an inertia value.
The working principle of gear reducer
The reducer is generally used for low-speed and high-torque transmission equipment. The power of the electric motor, internal combustion engine or other high-speed running is achieved by the gear with a small number of teeth on the input shaft of the reducer and the large gear on the output shaft to achieve the purpose of deceleration. The reducer will also have several pairs of gears with the same principle to achieve the desired deceleration effect. The ratio of the number of teeth of the large and small gears is the transmission ratio.
