CN212250816U

CN212250816U - High-speed rotor connection structure

Info

Publication number: CN212250816U
Application number: CN202020478828.9U
Authority: CN
Inventors: 左晃
Original assignee: Hunan Hanglitianchuan Intelligent Equipment Co ltd
Current assignee: Hunan Hanglitianchuan Intelligent Equipment Co ltd
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2020-12-29
Anticipated expiration: 2030-04-03

Abstract

The utility model provides a high-speed rotor connecting structure, which comprises a central shaft and a rotor part, wherein the rotor part comprises a rotor part I and a rotor part II; a plurality of flat key grooves are uniformly distributed on the two end surfaces of the rotor part, flat keys are arranged in the flat key grooves and matched with the flat key grooves, and the flat keys are fixed on a second rotor part through fastening screws; the rotor element I is tightly matched with the flat key, a certain gap is reserved in the radial direction, and a jackscrew hole structure is arranged; and a locking nut is arranged on the outer side of the rotor piece for locking. The utility model provides a high-speed rotor connection structure evenly arranges parallel key and threaded connection structure at the terminal surface of rotor spare, can satisfy functions such as geometry symmetry, transmission load, axial positioning, accurate centering, can avoid producing additional load again, improves the reliability of connecting.

Description

High-speed rotor connection structure

Technical Field

The utility model relates to a mechanical transmission technical field, concretely relates to high-speed rotor connection structure.

Background

The high speed rotating rotor requires the rotor to be divided into several parts and then assembled together for reasons of use, machining, strength, and structure. The traditional connection modes comprise flat key connection, spline connection, interference connection, bolt connection, pin connection and the like. The common flat key and the spline are in clearance fit, so that shaking eccentricity can be caused during rotation, and the common flat key and the spline are not suitable for connection between high-speed rotating parts; the interference connection can only be generally used in the occasions with limited non-detachable interference magnitude and can not be used for connecting parts which need to be frequently replaced or disassembled, when the high-speed centrifugal loosening amount is overlarge, the requirements on the required heating temperature and the required freezing temperature are higher, and when the torque load needing to be transmitted is larger, the requirements on assembly and use can not be met; the bolt connection positioning precision is not high, and the bolts bear larger forced displacement due to the difference of radial centrifugal displacement of different parts, so that the generated bending stress is superposed with the pretightening force of the bolts, the actual effect of the bolts is easily caused, and accidents are caused; the pin joint does not have the function in the axial direction, is often used in cooperation with the bolt joint, and also has the defect of the bolt joint.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned problem that prior art exists, the utility model provides a fix a position accurate, connect reliable high-speed rotor connection structure.

The utility model adopts the following technical scheme:

a high-speed rotor connecting structure comprises a central shaft and a rotor part, and is characterized in that the rotor part comprises a first rotor part and a second rotor part; a plurality of flat key grooves are uniformly distributed on the two end surfaces of the rotor part, flat keys are arranged in the flat key grooves and matched with the flat key grooves, and the flat keys are fixed on a second rotor part through fastening screws; the rotor element I is tightly matched with the flat key, a certain gap is reserved in the radial direction, and a jackscrew hole structure is arranged; and a locking nut is arranged on the outer side of the rotor piece for locking.

Furthermore, the second rotor part and the central shaft are of an integral structure.

Furthermore, the second rotor part and the central shaft are of a split structure.

Furthermore, the number of the flat key grooves on the two end surfaces of the rotor piece is three or more.

Further, the flat key grooves are arranged on the two end faces of the rotor part in a centrosymmetric mode.

Further, the number of the jackscrew holes is the same as that of the flat keyways.

The utility model provides a high-speed rotor connection structure evenly arranges parallel key and threaded connection structure at the terminal surface of rotor spare, can satisfy functions such as geometry symmetry, transmission load, axial positioning, accurate centering, can avoid producing additional load again, improves the reliability of connecting.

Drawings

FIG. 1 is a schematic view of the connection structure of the high-speed rotor of the present invention;

FIG. 2 is a partial view of a rotor connection;

FIG. 3 is a schematic view showing the arrangement of flat bonds in example 1.

Detailed Description

The present invention will be further explained with reference to the drawings and examples. In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.

Example 1

As shown in fig. 1, the utility model provides a high-speed rotor connection structure, which comprises a central shaft 1, a lock nut 2, a rotor member I3, a set screw I4, a flat key 5, a set screw II 6, a rotor member II 7 and the central shaft 1 which are of an integral structure; the flat key 5 is matched with a flat key groove on the second rotor part 7 and is fixed on the second rotor part 2 through the first set screw 4 and the second set screw 6, so that the flat key 5 can be ensured not to move in high-speed rotation. According to the requirements of transmission torque, positioning accuracy and the like, 3 or more than 3 flat key grooves which are uniformly distributed can be designed on the second rotor part 7, as shown in fig. 3, 4 flat key grooves and flat keys are arranged in the embodiment, and the flat key grooves are arranged on the two end surfaces of the rotor part in a central symmetry mode, wherein the

flat keys

51 and 53 realize the positioning of the first rotor part 3 in the horizontal direction, and the

flat keys

52 and 54 realize the positioning of the second rotor part 7 in the vertical direction, so that the rotor part can be ensured to keep good centering performance in a working state; and on the outer side of the rotor piece I3, the rotor piece I3 is axially locked by arranging the locking nut 2, so that the axial positioning of the rotor piece is realized, and axial thrust can be provided in the assembling process. As shown in fig. 2, the first rotor member 3 is tightly fitted with the flat key 5, and a certain gap is left in the radial direction, so that the internal stress generated by the radial deformation inconsistency of the first rotor member 3 and the second rotor member 7 under the action of high-speed centrifugal force can be prevented; and the terminal surface of the rotor member 3 is provided with a jackscrew hole structure 31, namely a common bolt hole, the corresponding rotor member two 7 is not provided with a hole, the jackscrew holes 31 are not provided with bolts during normal work, when the rotor member 3 needs to be disassembled, the locking nut 2 is unscrewed, the bolts are evenly screwed on the bolt holes of the rotor member one 3, and the rotor member one 3 is separated from the rotor member two 7 and the central shaft 1 through the axial force of the bolts, so that the installation and the disassembly are convenient.

Example 2

The difference between this embodiment and embodiment 1 is that in this embodiment, the second rotor member 7 and the central shaft 1 are of a split structure, so that the lock nut 2 is also arranged on the outer side of the second rotor member 7 for axial positioning.

It should be understood that the above examples are only for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A high-speed rotor connecting structure comprises a central shaft and a rotor part, and is characterized in that the rotor part comprises a first rotor part and a second rotor part; a plurality of flat key grooves are uniformly distributed on the two end surfaces of the rotor part, flat keys are arranged in the flat key grooves and matched with the flat key grooves, and the flat keys are fixed on a second rotor part through fastening screws; the rotor element I is tightly matched with the flat key, a certain gap is reserved in the radial direction, and a jackscrew hole structure is arranged; and a locking nut is arranged on the outer side of the rotor piece for locking.

2. The high speed rotor coupling structure of claim 1 wherein the second rotor member is of unitary construction with the central shaft.

3. The high-speed rotor connection structure of claim 1, wherein the second rotor member is a split structure with the central shaft.

4. The high-speed rotor connection structure according to claim 1, wherein the number of the flat key grooves on the end faces of the rotor member is three or more.

5. The high-speed rotor connection structure according to claim 4, wherein the flat key grooves are arranged on the end faces of the rotor members in a centrosymmetric manner.

6. The high-speed rotor connection structure according to claim 1, wherein the number of the jackscrew holes is the same as the number of the flat key grooves.