Assembly method of spline sleeve and rotating shaft and motor
An assembly method and a technology of spline sleeves, which are applied in the field of mining machinery, can solve the problems of reducing the size of the journal, excessive interference, and difficult control of the interference of heat-fitting, etc., and achieve the effect of assembly and rapid assembly
Active Publication Date: 2022-04-05
DATONG ELECTRIC LOCOMOTIVE OF NCR
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Problems solved by technology
The heat-fitting method is to heat the spline sleeve to make it thermally expand to increase the aperture size, and then naturally fit the spline sleeve on the rotating shaft to achieve an interference fit. The installation interference is not easy to control, and it is easy to cause excessive interference or insufficient interference
The cold assembly method is to place the rotating shaft in liquid nitrogen to shrink the rotating shaft to reduce the size of the journal, and then fit the spline sleeve on the rotating shaft to achieve interference fit, but the cold assembly method needs to hang the motor , the operation is inconvenient, at the same time it takes a long time for cold shrinkage, the control of the temperature of the rotating shaft and the amount of cold installation interference are not easy to control
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[0047] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.
[0048] In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of example different exemplary structures in which aspects of the invention may be implemented. systems and procedures. It is to be understood that other specific arrangements of components, structures, exemplary means, systems and steps ma...
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The invention discloses an assembly method of a spline sleeve and a rotating shaft and a motor. The method is used to insert the rotating shaft into the tapered hole of the spline sleeve through the interference fit. The assembly method includes: Step S200: Calculate the first The amount of interference compensation in the direction is c, c=a-b; where, a is in the non-interference fit state, the spline sleeve is sleeved behind the rotating shaft, the end face of the free end of the rotating shaft and the second end of the spline sleeve The distance between the inner end faces of the part, a≥0; b is the preset value of the interference between the rotating shaft and the spline sleeve, 0≤b≤a; step S400: when c>0, select the gasket, the gasket The thickness of the sheet is c, and the gasket is installed on the inner end surface of the second end of the spline sleeve; when c=0, directly proceed to step S600; step S600: thermally assemble the rotating shaft and the spline sleeve. The method for assembling the spline sleeve and the rotating shaft of the present invention realizes precise control of the interference amount of the interference fit between the two, and can realize rapid assembly.
Description
technical field [0001] The invention relates to the technical field of mining machinery, in particular to an assembly method of a spline sleeve and a rotating shaft and a motor. Background technique [0002] In the product development of non-highway mining dump trucks, the torque transmission of the drive wheel usually uses the interference fit of the spline sleeve with a tapered hole and the motor with a tapered shaft. The interference fit between the spline sleeve and the rotating shaft can transmit a large Torque, at the same time, it is easy to install and disassemble, and can reduce the damage to the mating surface of the spline sleeve and the rotating shaft during interference installation, so as to realize repeated use. [0003] In the prior art, the interference fit assembly process of the spline sleeve and the rotating shaft can adopt the cold pressing method, the hot fitting method and the cold fitting method. The cold pressing method mostly uses a press machine. ...
Claims
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IPC IPC(8): H02K15/00B25B27/14H02K7/00
CPCH02K15/00B25B27/14H02K7/003H02K2213/03
Inventor 朱小龙赵东波孙志宏
Owner DATONG ELECTRIC LOCOMOTIVE OF NCR