Shaft structure with torque shaft positioning

Abstract

The application discloses a shaft structure with torque shaft positioning, which comprises a torque shaft and a half shaft. The end of a spline shaft is inserted into the recess inside the half shaft. The inside of the spline shaft is provided with a stepped hole. A supporting sleeve is arranged in the stepped hole of the spline shaft and coaxially arranged with the stepped hole. The inside of the supporting sleeve is provided with a second stepped hole. The inside of the spline shaft is further provided with an inner spline. The inner spline is connected with the torque shaft. The end of the torque shaft abuts against the end face of the second stepped hole. A pin penetrates the half shaft, the spline shaft and abuts against the outer surface of the supporting sleeve, so that the half shaft, the spline shaft and the supporting sleeve are fixedly connected together. The application has the advantages that the coaxiality of the half shaft and the torque shaft is improved, the stability of the connection between the half shaft and the torque shaft is increased, the positioning is more accurate, and the service life is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of motor manufacturing, in particular to a shaft structure with torque shaft front end positioning. BACKGROUND

[0002] For a motor outputting torque through a torque shaft, the motor shaft needs to be designed in an inner spline form, and the torque shaft needs to be designed in an outer spline form, the two are connected through the splines to output the motor torque. The outer spline of the torque shaft needs to be inserted into the inner spline of the motor, and the coaxiality is prone to being poor only through spline positioning, which causes the torque shaft to be twisted off or the spline teeth of the inner spline of the motor shaft to be damaged during the operation of the motor, and the service life of the motor is affected. SUMMARY

[0003] To solve the above problems, the application discloses a shaft structure with torque shaft positioning.

[0004] The specific technical scheme is as follows:

[0005] A shaft structure with torque shaft positioning, comprising a torque shaft and a half shaft, the end of the spline shaft is inserted into the recess inside the half shaft, the inside of the spline shaft is provided with a stepped hole, a support sleeve is arranged in the stepped hole of the spline shaft and is coaxially arranged with the stepped hole, the inside of the support sleeve is provided with a second stepped hole, the inside of the spline shaft is further provided with an inner spline, the inner spline is connected with the torque shaft, the end of the torque shaft abuts against the end face of the second stepped hole, a pin penetrates through the half shaft, the spline shaft and abuts against the outer surface of the support sleeve, so that the half shaft, the spline shaft and the support sleeve are fixedly connected together, and the pin is uniformly distributed on the two ends of the half shaft.

[0006] The outer diameter size of the support sleeve is greater than the maximum size of the inner spline.

[0007] The second stepped hole of the support sleeve is chamfered.

[0008] The application has the advantages that the coaxiality of the half shaft and the torque shaft is improved, the stability of the connection between the half shaft and the torque shaft is increased, the positioning is more accurate, and the service life is improved. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 The application is a structural schematic view.

[0010] Figure 2 The application is a structural schematic view of the A-A direction. Figure 1 The application is a structural schematic view of the A-A direction.

[0011] Figure 3 The application is a structural schematic view of the spline shaft.

[0012] Figure 4 The application is a structural schematic view of the support sleeve. DETAILED DESCRIPTION

[0013] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0014] The shaft structure with torque shaft positioning comprises a torque shaft 5 and a half shaft 1, an end of a spline shaft 2 is inserted into a groove inside the half shaft 1, a stepped hole 21 is arranged inside the spline shaft 2, a supporting sleeve 4 is arranged in the stepped hole of the spline shaft 2 and is coaxially arranged with the stepped hole 21, a second stepped hole 41 is arranged inside the supporting sleeve 4, an inner spline 22 is further arranged inside the spline shaft 2, the inner spline 22 is connected with the torque shaft 5, an end of the torque shaft 5 abuts against an end face of the second stepped hole 41, a pin 3 penetrates the half shaft 1, the spline shaft 2 and abuts against an outer surface of the supporting sleeve 4, so as to fix the half shaft 1, the spline shaft 2 and the supporting sleeve 4 together, and the pin 3 is symmetrically arranged at both ends of the half shaft 1.

[0015] The outer diameter size of the supporting sleeve 4 is greater than the maximum size of the inner spline.

[0016] The second stepped hole 41 of the supporting sleeve 4 is chamfered.

[0017] The installation process of the present application is as follows: firstly, the supporting sleeve 4 is put into the spline shaft 2, then the spline shaft with the supporting sleeve 4 is put into the groove inside the half shaft, and then the torque shaft is connected with the spline shaft through the spline, and the installation is completed. The purpose of arranging the stepped hole is to ensure that the supporting sleeve does not displace in the axial direction, the purpose of arranging the second stepped hole is to limit the displacement of the torque shaft, so that the whole structure is more compact, and the spline shaft is arranged with the stepped hole, the inner diameter coaxial with the half shaft can be machined first, and the outer circle of the supporting sleeve and the spline part of the spline shaft are machined again with the inner diameter of the half shaft as the machining reference, so as to highly ensure the coaxiality of the half shaft and the torque shaft, and the second stepped hole can further ensure that the torque shaft is easier to be centered during being put into the spline shaft, solves the problem that the torque shaft sinks on one side during installation and is difficult to install, and the two cylindrical pins symmetrically arranged at the upper and lower ends of the half shaft can ensure that the centers of the torque shaft and the half shaft are still on the axial center lines of the two during rotation, so as to avoid excessive vibration caused by the shaft deviation.

Claims

1. A shaft arrangement with torque shaft positioning comprising a torque shaft and a half shaft, characterized in that: The end of the spline shaft is inserted into the recess inside the half shaft, the inside of the spline shaft is provided with a stepped hole, the support sleeve is arranged in the stepped hole of the spline shaft and coaxially arranged with the stepped hole, the inside of the support sleeve is provided with a second stepped hole, the inside of the spline shaft is further provided with an inner spline, the inner spline is connected with the torque shaft, the end of the torque shaft abuts against the end face of the second stepped hole, the pin penetrates the half shaft, the spline shaft and abuts against the outer surface of the support sleeve, so as to fix the half shaft, the spline shaft and the support sleeve together, and the pin is uniformly distributed on both ends of the half shaft.

2. The shaft arrangement with torque shaft positioning of claim 1, wherein: The outer diameter size of the support sleeve is greater than the maximum size of the inner spline.

3. The shaft arrangement with torque shaft positioning of claim 1, wherein: The second stepped hole of the support sleeve is chamfered.

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