1. Why should the gear reducer be classified? It is a reasonable distribution of transmission ratio.If the distribution of the transmission ratio is unreasonable, it may cause the structure to be too large, the ratio to be unbalanced, and the wear of the high-speed wheel to increase.The general transmission ratio distribution is (straight teeth): Single level: I <= 5; Second level: I=8-30; Third level: I = 35-300 (reference) 2. What are primary and secondary gear reducers? Draw a picture to answer this question, please refer to it!There are too many words to describe.The three-stage transmission only needs to add a gear shaft on the two-stage transmission. 3. Is there a gear reducer with more than three stages? There are few commonly used and special individual designs.If the transmission ratio is large, 'worm gear reducer' can be considered, but it is characterized by low efficiency, and 'planetary reducer' can also be used First, the performance characteristics of the gear reducer The gear reducer is a combination of a geared motor and a large reducer.No need for couplings and adapters, compact structure.The load is distributed on the planetary gears, so the load capacity is higher than that of general helical gear reducers.Meet the needs of small space and high torque output. gear reducer Widely used in large mines, steel, chemical industry, ports, environmental protection and other fields.Combined use with K, R series can get a larger speed ratio. 1. Reliable industrial gear transmission components; 2. Reliable structure, multi-input combination, meeting special application requirements; 3. The transmission capacity is large, the structure is compact, and the gear structure is determined according to the modulus design principle; 4. It is easy to use and maintain, and materials can be configured and selected according to technical and engineering conditions; 5. Torque range from 360000nm to 1200000nm Second, the classification of gear reducer When selecting a reducer, you should compare the Dimensions, transmission efficiency, carrying capacity, quality and price of different types and varieties of reducers according to the selection conditions of the working machine, the technical parameters, performance and economy of the power machine. The load state of the working machine connected to the reducer is relatively complicated, which has a great impact on the reducer.It is an important factor in reducer Selection and calculation.The load state of the reducer, that is, the load state of the working machine (driven machine), is usually divided into three categories: ①—evenly distributed load, ②—medium impact load, ③—strong impact load. 3. Precautions for gear reducer Reasons for gear reducer leakage 1. The fuel tank pressure rises In an enclosed reducer, each pair of gears generates heat when meshing and rubbing.According to Boyle-Malot's law, as the running time prolongs, the temperature inside the reduction box will gradually increase, while the volume inside the reduction box remains unchanged, so the pressure inside the box will increase, and the lubricating oil in the box will increase. Splash on the inner wall of the gear box.Due to the strong permeability of the oil, under the action of the pressure in the box, the oil will seep out of the place where the seal is not tight. 2. Oil leakage caused by unreasonable structural design of the reducer If the designed reducer does not have a ventilation cover, the reducer cannot achieve pressure equalization, resulting in higher and higher pressure in the box and oil leakage. 3. Over fueling During the operation of the reducer, the oil pool is violently stirred, and the lubricating oil splashes around in the reducer.If the amount of oil is too much, a large amount of lubricating oil will accumulate on the shaft seal, joint surface, etc., causing leakage. 4. Improper maintenance process In the process of equipment maintenance, due to incomplete removal of dirt on the joint surface, improper selection of sealant, reverse installation of seals, untimely replacement of seals, etc., oil leakage will also occur. 4 Processing plan editing Gear reducer oil leakage The oil leakage of the reducer is repaired with polymer composite materials.Polymer composite materials are made of polymers, metal or ceramic ultrafine powders and fibers under the action of curing agents and curing accelerators.Various materials learn from each other in terms of performance and produce synergistic effects, so that the comprehensive performance of composite materials is better than that of raw materials.With strong adhesion, mechanical properties, chemical corrosion resistance and other properties, it is widely used in the repair of mechanical wear, scratches, pits, cracks, leakage and casting sand holes of metal equipment, as well as chemical anti-corrosion.Protection and maintenance of various chemical storage tanks, reaction tanks and pipelines.
