Torque and axial thrust integrated loading device of gear case of double screw extruder

Abstract

The invention discloses a torque and axial thrust integrated loading device of a gear case of a double screw extruder. The integrated loading device comprises a loading device casing and first and second extended shafts arranged in parallel in the casing; the first and second extended shafts are connected with short and long output shafts of the tested casing via shaft couplings respectively, andthe torque is transmitted; the left end of each extended shaft is provided with a thrust bearing, a thrust bearing sleeve, a butterfly-shaped spring and a push rod; the first and second extended shafts can apply the axial thrusts simultaneously in the rotation process; a third output is arranged under the first and second extended shafts; and a first transmission gear on the third output shaft isengaged with a first extended shaft gear on the first extended shaft, and a second transmission gear is engaged with a second extended shaft gear on the second extended shaft. Thus, a test condition can approach the practical condition of the gear case of the double screw extruder more, and performance of the gear case can be evaluated correctly.

Description

technical field [0001] The invention relates to a twin-screw extruder, in particular to a gear box torque and axial thrust comprehensive loading device for the twin-screw extruder. 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 more difficult to test such products. [0003] During the gearbox test with a single output shaft, 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 the tested gearbox, in which the ma...

AI Technical Summary

Problems solved by technology

[0004] However, the two output shafts of the tested gearbox of the co-rotating twin-screw extruder 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. After the assembly is completed, only no-load operation can be carried out to check the meshing of the gears and whether there is any abnormal sound during operation. In this case, the tested gearbox cannot form a closed transmission chain, which cannot well reflect the load of the tested gearbox. performance

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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