Shaft deformation detection apparatus of third-fourth gear declutch shift shaft

Abstract

The invention discloses a shaft deformation detection apparatus of a third-fourth gear declutch shift shaft. The apparatus comprises a detection platform, the detection platform is provided with a rotation driving mechanism which includes a support fixed on the detection platform, and a driving wheel and a driven wheel which are pivoted to the support and are in transmitting fit with each other, the pivot of the driving wheel is connected with a rocking bar, and the driven wheel is provided with a fixation structure for fixing one end of the third-fourth gear declutch shift shaft and enabling the shaft center line of the third-fourth gear declutch shift shaft to be superposed with the center line of the driven wheel. The detection platform is also provided with a detection mechanism in contact with the other end of the third-fourth gear declutch shift shaft for detecting a shaft deformation condition. The apparatus provided by the invention has the following advantages: shaking of the rocking bar enables the driving wheel to drive the driven wheel to rotate so as to drive the third-fourth gear declutch shift shaft to enable the shaft center line of the third-fourth gear declutch shift shaft to rotate, and whether the shaft is deformed after electric welding can be detected through a pressure value change condition obtained by a pressure sensor, such that the operation is simple and convenient.

Description

technical field [0001] The invention relates to the field of auto parts, in particular to a shaft deformation detection device for a shift fork shaft of third and fourth gears. Background technique [0002] The third and fourth gear shift fork shafts of automobile gearboxes are shift fork shafts used to switch between third and fourth gears. The existing third and fourth gear shift fork shafts have shift guide blocks and shafts that are integrally cast. This structure On the one hand, the structure of the mold is complex, and the thickness of the connection between the shift guide block and the shaft of the shift fork shaft is relatively thick, and the cooling time is later than other parts, resulting in an unstable connection, and it is easy to break after long-term fatigue, posing a safety hazard; or A collar is set at the tail of the shift guide block, and the collar is set on the shaft and fixed with the shaft by screws. This structure can simplify the mold, but on the o...

AI Technical Summary

Problems solved by technology

[0002] The third and fourth gear shift fork shafts of automobile gearboxes are shift fork shafts used to switch between third and fourth gears. The existing third and fourth gear shift fork shafts have shift guide blocks and shafts that are integrally cast. This structure On the one hand, the structure of the mold is complex, and the thickness of the connection between the shift guide block and the shaft of the shift fork shaft is relatively thick, and the cooling time is later than other parts, resulting in an unstable connection, and it is easy to break after long-term fatigue, posing a safety hazard; or A collar is set at the tail of the shift guide block, and the collar is set on the shaft and fixed with the shaft by screws. This structure can simplify the mold, but on the one hand, there are more consumables, and on the other hand, the long-term vibration of the car running It may cause the screw to loosen, and the shift guide block will be separated from the shaft, resulting in failure to engage the gear

In view of the above situation, the designer comprehensively improves the production process, manufactures the shift guide block and the shaft separately, and then welds the shift guide block to the shaft by electric welding, which can avoid the above shortcomings at the same time, but in the welding process, due to local Overheating, the shaft may be deformed, so it needs to be tested after electric welding, and there is an urgent need for a detection device that can detect whether the shaft is deformed after electric welding

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