Passenger vehicle gearbox impact test device and test method thereof

Abstract

The invention relates to a passenger vehicle gearbox impact test device and a test method thereof. The passenger vehicle gearbox impact test device comprises a supporting device for fixing a passengervehicle gearbox to be detected, a driving mechanism directly connected with one input end of the passenger vehicle gearbox to be detected, a brake mechanism connected with two output ends of the passenger vehicle gearbox to be detected, and a hydraulic loading device connected with the brake mechanism. The driving mechanism comprises a driving motor, an electromagnetic clutch, an inertia flywheelbox and an input transmission shaft which are connected in sequence. An input end torque rotating speed sensor is installed on an output shaft of the inertia flywheel box. The brake mechanism comprises an output transmission shaft, an output end torque rotating speed sensor, a middle support and a brake device which are connected in sequence. According to the invention, the instantaneous impact condition of the gearbox under the working condition of the whole vehicle can be scientifically simulated, an impact test process can be completed in a very short time, and the impact torque, the impact simulation inertia and the impact test rotating speed are adjustable.

Description

Technical field[0001]The invention relates to a passenger car gearbox impact test device and a test method thereof, which are mainly used for simulating the shock working conditions encountered under the actual vehicle working conditions of the passenger car gearbox to perform the gearbox impact test.Background technique[0002]Under the driving conditions of the whole vehicle, when changing from a low adhesion coefficient road to a high adhesion coefficient road and emergency braking, due to the rapid braking at the wheel end, and the transmission input end has part of the inertia or the input end power has not yet been cut off in the future, The internal gears and shafting of the gearbox will have a large instantaneous impact, which will cause severe gear breakage and shafting fracture; the conventional test bench cannot scientifically simulate the instantaneous impact of the gearbox under the whole vehicle condition. However, the test method requires that the test impact be complet...

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Problems solved by technology

[0002] Under the driving conditions of the whole vehicle, when changing from a road with a low adhesion coefficient to a road with a high adhesion coefficient or during emergency braking, due to the rapid braking at the wheel end, the input end of the gearbox itself has some inertia or the power at the input end has not yet been cut off, resulting in The internal gears and shafting of the gearbox will produce a large instantaneous impact, which will seriously cause the gear of the gearbox to break and the shafting to break; the conventional test bench cannot scientifically simulate the instantaneous impact of the gearbox under the condition of the whole vehicle. Moreover, the test method requires that the test impact be completed in a very short time (generally, the impact process is completed within (0.1-0.2) s), and the impact torque, impact simulation inertia and impact test speed are adjustable, so the test is difficult. There is currently no relevant test bench in China

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