CN-122016345-A - Torsion fatigue test equipment for automobile transmission shaft assembly

CN122016345ACN 122016345 ACN122016345 ACN 122016345ACN-122016345-A

Abstract

The invention belongs to the field of shaft testing, in particular to torsion fatigue testing equipment for an automobile transmission shaft assembly, which comprises a testing seat, wherein a driving table for controlling a shaft to be tested to rotate is arranged in the middle of the testing seat, a mobile table connected with the shaft to be tested is arranged on the top surface of the testing seat, the mobile table can change the resistance between the mobile table and the testing seat, a center seat is arranged in the middle of the testing seat, an adjusting column is fixedly connected to the top of the center seat, and a plurality of monitoring modules for monitoring fatigue data of the shaft to be tested are arranged in the testing seat.

Inventors

MA DONG
Bian Yiguang
LI JIA
YANG YONGKANG
XU FENG

Assignees

重庆市捷佳泰机械制造有限公司

Dates

Publication Date: 20260512
Application Date: 20260416

Claims (7)

1. The utility model provides a torsion fatigue test equipment of automobile transmission shaft assembly, includes test seat (4), the middle part of test seat (4) is provided with drive table (12) that are used for controlling to wait to test axle (16) and rotate, be provided with on the top surface of test seat (4) with wait to test axle (16) mobile station (14), mobile station (14) can change the resistance of self with test seat (4), the middle part of test seat (4) is provided with center seat (13), the top rigid coupling of center seat (13) has adjusting post (24), mobile station (14) are connected with adjusting post (24) rotation, be provided with multiple monitoring module that is used for monitoring to wait to test axle (16) fatigue data in test seat (4), the outside of mobile station (14) still is provided with locking plate (11) that are used for locking mobile station (14); The outer side of the adjusting column (24) is sleeved with a lifting sleeve (25), the lifting sleeve (25) is connected with the driving table (12), and a plurality of lifting pieces capable of adjusting the height and used for supporting the lifting sleeve (25) are arranged on the outer side of the adjusting column (24); A plurality of annular partition plates (17) are fixedly connected to the top surface of the test seat (4), annular moving rails (18) are formed between the adjacent partition plates (17), the width of the moving table (14) is the same as that of the moving rails (18), permanent magnet modules are arranged in the moving table (14), and a plurality of permanent magnet modules are arranged in the moving rails (18); the monitoring module comprises a sound receiving module (15), a plurality of sound receiving modules (15) are distributed on the top surface of the edge of the test seat (4) in an annular equidistant mode, and the sound receiving end faces the center seat (13).
2. The torsion fatigue testing device for the automobile transmission shaft assembly according to claim 1, wherein a servo motor (26) for providing power is arranged at one end, close to a lifting sleeve (25), of the driving table (12), a universal coupling (27) is arranged at the other end of the driving table (12), a connecting disc (28) is arranged at the end of the universal coupling (27), an outer ring rail (23) is fixedly connected to the outer side of the center seat (13), and a supporting arm (34) connected with the outer ring rail (23) is arranged at the bottom of the driving table (12).
3. The torsion fatigue testing device for the automobile transmission shaft assembly according to claim 2, wherein a connecting disc (28) is also arranged at one end of the moving table (14) close to the driving table (12), a clamping table (30) connected with the locking plate (11) is fixedly connected at the other end of the moving table (14), and a hydraulic telescopic cylinder (10) for controlling the locking plate (11) to move is arranged at the outer side of the locking plate (11).
4. The torsion fatigue testing device for the automobile transmission shaft assembly according to claim 3, wherein a plurality of butt joint grooves (19) are formed in the surface of the movable rail (18), the plurality of butt joint grooves (19) are distributed in an annular equidistant mode, the monitoring module further comprises a plurality of pressure sensors (20), and the pressure sensors (20) are arranged in the butt joint grooves (19).
5. The torsional fatigue testing device for the automobile transmission shaft assembly according to claim 4, wherein the monitoring module further comprises an acceleration detection module (29) arranged on the outer side of the shaft (16) to be tested, the acceleration detection module (29) comprises two end blocks (31), replaceable replacement discs (32) are arranged on opposite sides of the two end blocks (31), a monitoring chip (33) is fixedly connected inside the end blocks (31), and the two end blocks (31) are fixedly connected through bolts.
6. The automobile transmission shaft assembly torsion fatigue test equipment according to claim 5, wherein an outer protection frame (1) is arranged on the outer side of the test seat (4), a sealing door (2) is further connected to the outer side of the outer protection frame (1) in a sliding clamping mode, a top shaft (3) connected with the sealing door (2) is arranged on the top of the outer protection frame (1), a sliding groove (6) is formed in the outer side of the outer protection frame (1), baffle columns (5) are fixedly connected to two ends of the sliding groove (6), a sliding table (9) is fixedly connected to the outer side of the outer protection frame (1), and a hydraulic telescopic cylinder (10) is connected to the sliding table (9) in a sliding clamping mode.
7. The torsion fatigue testing device for the automobile transmission shaft assembly according to claim 6, wherein the monitoring module further comprises an optical module (7), the optical module (7) is fixedly connected to the top edge of the outer protection frame (1), an electric sliding rail (8) is fixedly connected to the inner top of the outer protection frame (1), a hanging rod (21) is fixedly connected to the moving end of the electric sliding rail (8), and a spray gun (22) is fixedly connected to the bottom of the hanging rod (21).

Description

Torsion fatigue test equipment for automobile transmission shaft assembly Technical Field The invention belongs to the field of shaft testing, and particularly relates to torsion fatigue testing equipment for an automobile transmission shaft assembly. Background The automobile transmission shaft assembly is a key component for connecting the gearbox and the drive axle and is responsible for transmitting torque and rotary motion generated by the engine to wheels so that the automobile generates driving force, the automobile transmission shaft is used as a core safety component for power transmission, and the batch test of the torque performance is a key link for guaranteeing the reliability of the whole automobile and preventing batch quality accidents. The transmission shaft bears alternating torque and impact load, once failure directly leads to vehicle runaway, batch test can ensure that each batch of products meets international standards, early fracture risks caused by material defects or process fluctuation are avoided, a fixed torque measuring method is often used, a sensor is arranged on a fixed support of a motor or load, and the numerical value of a shaft body is measured by utilizing the principle of acting force and reaction force. Traditional axle torsion test equipment function is comparatively single, often only fixes the both ends of axle, and the torsional force is constantly applyed to the axle again, through torsional force and the torsion angle that measurement axle actually bore, just the test result of drawing forth of grass, but this test flow is totally different with the environment and the use mode that the in-process of the axletree in-service use was located, is difficult to measure true torsion fatigue test data, and measurement mode is too single yet, is difficult to simulate the various situations that reality axletree met for the test data that obtains lacks the authenticity more. Therefore, the invention provides torsion fatigue testing equipment for an automobile transmission shaft assembly. Disclosure of Invention In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved. The technical scheme includes that the torsion fatigue testing equipment for the automobile transmission shaft assembly comprises a testing seat, wherein a driving table for controlling a shaft to be tested to rotate is arranged in the middle of the testing seat, a mobile table connected with the shaft to be tested is arranged on the top surface of the testing seat, the mobile table can change the resistance between the mobile table and the testing seat, a center seat is arranged in the middle of the testing seat, an adjusting column is fixedly connected to the top of the center seat, the mobile table is rotationally connected with the adjusting column, a plurality of monitoring modules for monitoring fatigue data of the shaft to be tested are arranged in the testing seat, and a locking plate for locking and stopping the mobile table is further arranged on the outer side of the mobile table; by the arrangement, the real working condition is effectively restored, the shaft bears torque, and meanwhile, the revolution brings real bending moment and radial force, and the real stress state of the rolling wheels is more similar, so that the authenticity of detection data is improved, meanwhile, due to scene simulation during detection, a plurality of detection data indexes are added, such as a sudden increase process of resistance under high-speed running, an output direction of rapid conversion force and an emergency stop test under high-speed centrifugation can be simulated, more detection data can be obtained, and more accurate measurement results can be obtained through the data. Preferably, the monitoring module comprises a sound receiving module, wherein a plurality of sound receiving modules are annularly and equidistantly distributed on the top surface of the edge of the test seat, sound receiving ends face the center seat, the plurality of sound receiving modules are annularly and equidistantly distributed, sound generated when the mobile station moves and vibration sound of a shaft to be tested can be effectively recorded, when microcracks or microscopic damages are generated in the material, high-frequency stress waves which cannot be heard by human ears are released, the high-sensitivity microphone array can capture the abnormal voiceprints, an alarm is sent earlier than obvious change of a torque curve, different faults send out different sounds, and through analysis of a spectrogram, whether crack expansion, bearing abrasion or universal joint looseness can be distinguished, and quick positioning of a problem root is facilitated, so that real and detailed test data are obtained. Preferably, the outside of adjusting the post has cup jointed the cover that goes up and down, the cover that goes up and down is connected with the dri