Combined motor rotor shaft

Abstract

The utility model discloses a combined motor rotor shaft, which comprises a rotor shaft, anti-wear components and an output sleeve, the output sleeve is nested at one end of the rotor shaft and is fixedly connected with the rotor shaft through an inner hexagonal screw, and the two anti-wear components are nested at two ends of the rotor shaft; according to the combined motor rotor shaft, the part, where the bearing is installed, of the rotor shaft is wrapped with the anti-abrasion assembly, so that the rotor shaft is prevented from being in direct contact with the bearing, abrasion exists between the anti-abrasion assembly and the bearing when hands are used for a long time, the anti-abrasion assembly can be replaced independently, the rotor shaft does not have a large abrasion phenomenon, and the service life of the rotor shaft is prolonged. Meanwhile, the output end of the rotor shaft is provided with the output sleeve, the output sleeve and the rotor shaft are connected through the inner hexagonal screw, the strength of the inner hexagonal screw is lower than that of the rotor shaft and the output sleeve, the inner hexagonal screw can be damaged when overload occurs, the rotor shaft is prevented from being damaged, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of rotor shafts, in particular to a combined motor rotor shaft. Background Art

[0002] The rotor shaft is a rotating mechanical part used to rotate or drive other mechanical parts. It is usually made of metal materials such as steel, copper, aluminum alloy, etc., with high strength and rigidity to withstand torsion and force. The rotor shaft is usually cylindrical in shape and has interfaces for mounting components at both ends for connecting other mechanical parts. One end is usually connected to an energy source, such as a car engine or electric motor, and the other end is connected to the component that needs to be rotated or driven, such as a wheel, fan, pump, etc.

[0003] The rotor shaft is an important rotating machinery part, widely used in various mechanical equipment and industrial fields, but it still has some problems: 1) When the rotor shaft is working, the bearing installation part will produce friction and vibration with the bearing. After a certain period of use, there is a phenomenon of displacement due to wear, which leads to increased vibration, thus affecting the dynamic balance. The only way is to replace the entire rotor shaft, and the subsequent maintenance cost is high; 2) The output end of the rotor shaft may bend or break due to overload, violent collision or other external factors, which will cause the traction motor to fail to work normally and need to be repaired or replaced; Therefore, in view of the above situation, it is urgent to develop a combined motor rotor shaft to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content

[0004] The purpose of the utility model is to provide a combined motor rotor shaft to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The combined motor rotor shaft comprises a rotor shaft, an anti-wear component and an output sleeve, wherein the output sleeve is nested at one end of the rotor shaft and fixedly connected to the rotor shaft by a hexagon socket screw, and two sets of anti-wear components are nested at both ends of the rotor shaft;

[0007] An integrally formed inner shaft is provided at one end of the rotor shaft, and a slot is provided on the side of the rotor shaft; the anti-wear component includes a sleeve and a locking block, the two sleeves are relatively distributed and close to each other, the locking block is embedded in the side wall of the sleeve and fixedly connected to the sleeve by screws; a screw hole B is provided on the top of the output sleeve.

[0008] As a further solution of the utility model: a screw hole A is opened in the middle of the inner shaft, the inner diameter of the screw hole A is consistent with the inner diameter of the screw hole B, and the screw hole A and the screw hole B can be connected by using a hexagon socket screw after being aligned.

[0009] As a further solution of the utility model: there are two groups of card slots, and each group of card slots is composed of a plurality of independent card slots distributed equidistantly in a ring shape.

[0010] As a further solution of the utility model: an outer groove is provided on the outer surface of the sleeve, an inner groove is provided on the inner wall of the sleeve, and a locking groove is provided on the edge of the side wall of the sleeve. The inner groove can improve the connection strength between the sleeve and the rotor shaft.

[0011] As a further solution of the utility model: when the locking grooves of the two sheaths are fitted to each other, they match the locking block, and when they are aligned with each other, the locking block is embedded and matched with the screws to achieve locking.

[0012] As a further solution of the utility model: the inner clamping groove matches the clamping groove, so that the sleeve can be stably connected to the rotor shaft.

[0013] Beneficial effects: The rotor shaft of this combined motor is wrapped with an anti-wear component at the position where the rotor shaft is installed with the bearing, so as to prevent the rotor shaft from directly contacting the bearing. After long-term use, there will be wear between the anti-wear component and the bearing. The anti-wear component can be replaced separately, and there will be no significant wear on the rotor shaft. Therefore, the maintenance cost can be effectively reduced. At the same time, an output sleeve is installed at the output end of the rotor shaft, and the two are connected with an hexagon socket screw. The strength of the hexagon socket screw is lower than that of the rotor shaft and the output sleeve. When overloaded, the hexagon socket screw will be damaged, thereby avoiding damage to the rotor shaft and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front structural schematic diagram of the utility model.

[0015] Figure 2 This is a schematic diagram of the rotor shaft structure of the utility model.

[0016] Figure 3 This is a schematic diagram of the output sleeve structure of the utility model.

[0017] Figure 4 This is a schematic diagram of the sheath structure of the utility model.

[0018] Figure 5 This is a schematic diagram of the locking block structure of the utility model.

[0019] In the figure: 1, rotor shaft; 11, inner shaft; 111, screw hole A; 12, slot; 2, anti-wear component; 21, sleeve; 211, outer groove; 212, inner slot; 213, locking groove; 22, locking block; 3, output sleeve; 31, screw hole B. DETAILED DESCRIPTION Example

[0020] See also Figures 1 to 5In the embodiment of the utility model, the combined motor rotor shaft includes a rotor shaft 1, an anti-wear component 2 and an output sleeve 3. The output sleeve 3 is nested at one end of the rotor shaft 1 and fixedly connected to the rotor shaft 1 by a hexagon socket screw. Two sets of anti-wear components 2 are nested at both ends of the rotor shaft 1.

[0021] An integrally formed inner shaft 11 is provided at one end of the rotor shaft 1, and a slot 12 is provided on the side of the rotor shaft 1; the anti-wear component 2 includes a sleeve 21 and a locking block 22, the two sleeves 21 are relatively distributed and close to each other, the locking block 22 is embedded in the side wall of the sleeve 21, and is fixedly connected to the sleeve 21 by screws; a screw hole B31 is provided at the top of the output sleeve 3.

[0022] As a further solution of the utility model: a screw hole A111 is opened in the middle of the inner shaft 11, the inner diameter of the screw hole A111 is consistent with the inner diameter of the screw hole B31, and the screw hole A111 and the screw hole B31 can be connected by using a hexagon socket screw after being aligned.

[0023] As a further solution of the utility model: there are two groups of card slots 12, and each group of card slots 12 is composed of a plurality of independent card slots 12 distributed equidistantly in a ring shape.

[0024] As a further solution of the utility model: an outer groove 211 is provided on the outer surface of the sleeve 21, an inner groove 212 is provided on the inner wall of the sleeve 21, and a locking groove 213 is provided on the edge of the side wall of the sleeve 21. The inner groove 212 can improve the connection strength between the sleeve 21 and the rotor shaft 1.

[0025] As a further solution of the utility model: when the locking grooves 213 of the two sheaths 21 are fitted to each other, they match the locking block 22 , and when they are aligned to each other, the locking block 22 is embedded and matched with the screws to achieve locking.

[0026] As a further solution of the utility model: the inner slot 212 matches the slot 12 , so that the sleeve 21 can be stably connected to the rotor shaft 1 .

[0027] The working principle of the utility model is as follows: when the combined motor rotor shaft is in use, the sleeve 21 is nested outside the slot 12 of the rotor shaft 1, and after the two sleeves 21 are butted, the locking block 22 is embedded in the locking slot 213 and fixed with screws. During subsequent assembly, the bearing is installed in the outer slot 211 of the sleeve 21, which can avoid wear of the rotor shaft 1 and the bearing. When the rotor shaft 1 is overloaded during operation, the torque will break the hexagon socket screw fixed between the output sleeve 3 and the rotor shaft 1, thereby avoiding damage to the rotor shaft 1.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Combined motor rotor shaft, characterized in that: It comprises a rotor shaft (1), an anti-wear component (2) and an output sleeve (3), wherein the output sleeve (3) is nested at one end of the rotor shaft (1) and fixedly connected to the rotor shaft (1) via a hexagon socket screw, and two sets of the anti-wear components (2) are nested at both ends of the rotor shaft (1); An integrally formed inner shaft (11) is provided at one end of the rotor shaft (1), and a slot (12) is provided on a side surface of the rotor shaft (1); the anti-wear component (2) comprises a sleeve (21) and a locking block (22), the two sleeves (21) are arranged opposite to each other and are closely attached to each other, the locking block (22) is embedded in a side wall of the sleeve (21) and is fixedly connected to the sleeve (21) by means of screws; a screw hole B (31) is provided on the top of the output sleeve (3).

2. The combined motor rotor shaft according to claim 1, characterized in that: A screw hole A (111) is provided in the middle of the inner shaft (11), and the inner diameter of the screw hole A (111) is consistent with that of the screw hole B (31).

3. The combined motor rotor shaft according to claim 1, characterized in that: The card slots (12) are provided in two groups in total, and a single group of the card slots (12) is composed of a plurality of independent card slots (12) distributed equidistantly in a ring shape.

4. The combined motor rotor shaft according to claim 1, characterized in that: An outer groove (211) is provided on the outer surface of the protective sleeve (21), an inner locking groove (212) is provided on the inner wall of the protective sleeve (21), and a locking groove (213) is provided on the edge of the side wall of the protective sleeve (21).

5. The combined motor rotor shaft according to claim 4, characterized in that: The locking grooves (213) of the two protective sleeves (21) match the locking block (22) when they fit together.

6. The combined motor rotor shaft according to claim 4, characterized in that: The inner card slot (212) matches the card slot (12).

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