Cylindrical gear transmission assembly

Cylindrical gear transmission assembly 2020 - 11 - 22 Wang Zhanguang ( Jiaozuo strong cement) Gear with big transmission power, transmission precision, higher efficiency and widely used in industry. The types of gear straight gear, helical gear, bevel gear, chat gear assembly today. A, cylindrical gear assembly cylindrical gear transmission device, said a pair of gears meshing axis parallel to each other. With cylindrical spur gear according to bus Angle is different, can be divided into straight gears, helical gears, herringbone gear, etc. In the cement industry transmission according to the way of airtight closed transmission and half closed, half open. Closed transmission gear pair in the precision machining of gear box, dust proof and good lubrication condition, the stability of center distance, by general whole factory transportation to the installation site, large reducer parts sent scene, the overall delivery of reducer need to check the adjustment of installation personnel. Half exposed drive gear pair is equipped with protective cover, generally by oil immersion or spray lubrication, poor conditions. Such general big modulus gear, large diameter, large transmission center distance, and adopts two composite processing, fission, transport to site installation personnel need assembly adjustment according to mark, such as large rotary kiln and the edge of tube mill transmission gears. 1, adjustment of meshing clearance of gear meshing, the normal tip clearance and must have certain backlash, otherwise useless. Standard spur gear tooth tip clearance is 0. 25米,( Short tooth is 0. 2米) M as the modulus, backlash can refer to the following test data. Backlash can use a feeler direct measurement, detection combined with surface against first, and then testing back clearance is the backlash, in order to guarantee good meshing, along the axial the backlash should to and so on. If the gear mesh surface is not against free state, the test on both sides of the gap is the sum of backlash. No feeler or feeler is not convenient to measure, you can press the lead test. 2, check the position of the gear meshing and contact of gear contact area is large size, is an important index of evaluation of gear manufacturing, and installation precision. Reducer gear mesh precision have been inspection in manufacturer also after the commissioning, so you just need to re-examine validation when installation, generally there is no problem, if the mesh is jammed, partial load should be readjusted. For kiln half open gear grinding, it must be strict inspection was carried out on the installation or assembly precision. Validation according to the following steps. Will first gear points several divisions, and the second is on the near a few teeth, etc are evenly on a thin layer of red lead oil, then plate machine for several weeks, according to the observation of indentation, and make judgment to the contact spot. Correct indentation section should be in the garden, and stretch up and down, but the end does not contact or contact with lighter. And ask the contact height not less than 40% of the depth of tooth contact width is not less than 60% of tooth width. Contact precision inspection, if found that spot near the root, that lack of center distance; Spot near the addendum, center distance is larger; Spot on the one side, shows that the two gear is not parallel, should be properly adjusted. More than just mesh of cylindrical gear assembly of general requirements and test methods and standards, kiln grinding big gear ring installation note there are many, such as shut the clearance requirement, grinding gear ring and kiln concentricity requirement, face runout requirement, and the method of alignment, etc. , will be in after the paper. Also because my level is limited, the wrong, please comment! （ Source: wisdom cement)