Gearbox of co-rotating twin-screw extruder

Abstract

The invention provides a gearbox of a co-rotating twin-screw extruder. The gearbox comprises a tested gearbox body, a long output shaft, a short output shaft and a torque loading device. The torque loading device comprises a loading device box body and two lengthening shafts arranged in the loading device box body in parallel, wherein the two lengthening shafts are connected with the short output shaft and the long output shaft through couplers so that torque transmission can be carried out, output shafts are arranged below the two lengthening shafts and are provided with two transmission gears, and the two transmission gears are meshed with gears of the two lengthening shafts respectively. The two output ends of the tested gearbox can be loaded in a test, and thus the test under the action of a preloaded load can better reflect the bearing performance of the tested gearbox.

Description

technical field [0001] The invention belongs to the field of mechanical equipment, and relates to a gear box for a co-rotating twin-screw extruder, in particular to a gear box for a twin-screw extruder with a loading device. Background technique [0002] Co-rotating twin-screw extruder gearbox is a very important part of the co-rotating twin-screw extruder, and its structural design directly affects the normal operation of the entire machine. Since the gear box of the co-rotating twin-screw extruder works by transmitting large torque and bearing large axial thrust through the output shaft, the center distance of the twin-screw is relatively small, and the output structure requires high rotation accuracy, so the design and processing and It is difficult to test such products. [0003] In the general single output shaft gearbox test, the tested gearbox is connected in series in the closed transmission chain of the test bench, and a certain power is applied to the input end of...

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Problems solved by technology

[0004] However, the two output shafts of the co-rotating twin-screw extruder gearbox (the tested gearbox) are limited by the center distance, and the distance is very close, so it is impossible to load the two output shafts of the tested gearbox at the same time. The gear box under test can only be operated under no load (load) after the assembly is completed. Check its gear meshing and whether there is any abnormal sound during operation. In this case, the gear box under test cannot form a closed transmission chain and cannot work well Reflect the load-bearing performance of the tested gearbox

However, the load-bearing operation of the tested gearbox can only be completed on the user's site. Once a problem occurs with the gearbox, it is difficult to repair due to the limitation of the site conditions.

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