Cast-aluminum rotor embedded with copper bars

Abstract

The utility model discloses a cast-aluminum rotor embedded with copper bars, which comprises a rotating shaft, the outer surface of the rotating shaft is fixedly connected with an aluminum block, the upper surface of the aluminum block is provided with a mounting hole, the copper bars are inserted into the mounting hole, the bottom ends of the copper bars are inserted into a lower positioning seat, and the lower positioning seat is provided with an upper positioning seat. The lower positioning seat is fixedly installed on the upper surface of the lower positioning disc, the lower positioning disc is connected to the outer surface of the rotating shaft in a sleeving mode, and the lower positioning disc is connected with the rotating shaft through a positioning handle. According to the cast-aluminum rotor embedded with the copper bar, the copper bar is inserted into the aluminum block and is clamped and fixed through the upper positioning seat and the lower positioning seat, the positioning handle can fix the lower positioning disc for the first time, and the wedge-shaped block can limit, stop and fix the lower positioning disc for the second time, so that the copper bar can be installed more stably; and the copper bar can be disassembled only by releasing the position limitation of the wedge-shaped block and the positioning handle on the lower positioning disc, so that the disassembly and assembly are more convenient and labor-saving, and the rotor is convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of rotors, in particular to a cast aluminum rotor embedded with copper bars. Background Art

[0002] Currently, a large portion of the power loss in large motors is caused by rotor losses. To reduce rotor losses, motor rotors are made of metals with low resistivity. Existing motor rotors are mostly made of cast copper and cast aluminum. Cast aluminum rotors are widely used due to their lower material and production costs. However, since aluminum has a higher resistivity than copper, it results in higher power loss and lower motor efficiency compared to cast copper rotors. While cast copper rotors have lower power loss than cast aluminum rotors, copper is a precious metal with a higher melting point, which requires more sophisticated molds for its production, increasing rotor manufacturing costs. Therefore, cast aluminum rotors with copper bars are now available.

[0003] However, the existing copper bars are generally welded to the cast aluminum rotor. When the rotor is damaged and needs to be repaired, the copper bars are inconvenient to disassemble and assemble. Therefore, we propose a cast aluminum rotor with embedded copper bars. Utility Model Content

[0004] The main purpose of the utility model is to provide a cast aluminum rotor embedded with copper bars, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A cast aluminum rotor embedded with copper bars comprises a rotating shaft, an aluminum block fixedly connected to the outer surface of the rotating shaft, a mounting hole formed on the upper surface of the aluminum block, a copper bar inserted into the interior of the mounting hole, the bottom end of the copper bar inserted into the interior of a lower positioning seat, the lower positioning seat fixedly mounted on the upper surface of a lower positioning plate, the lower positioning plate sleeved on the outer surface of the rotating shaft, and the lower positioning plate and the rotating shaft connected via a positioning handle.

[0007] In order to facilitate the fixation of the top end of the copper bar, the utility model provides a cast aluminum rotor embedded with a copper bar. The top end of the copper bar is inserted into the interior of the upper positioning seat. The upper positioning seat is fixedly mounted on the lower surface of the upper positioning plate. The upper positioning plate is fixedly mounted on the outer surface of the rotating shaft.

[0008] In order to make the wedge block movable, the utility model is a cast aluminum rotor embedded with copper bars, and a receiving groove is provided on the outer surface of the rotating shaft. The inner bottom wall of the receiving groove is fixedly connected to a support spring, and the end of the support spring away from the rotating shaft is fixedly connected to the wedge block.

[0009] In order to prevent the positioning handle from being easily separated from the rotating shaft, the utility model provides a cast aluminum rotor embedded with a copper bar, and the outer surface of the positioning handle is provided with an external thread, and the outer surface of the positioning handle is threadedly connected to a locking nut.

[0010] In order to facilitate the installation of the copper bars, in the cast aluminum rotor embedded with the copper bars of the present invention, the shape of the installation hole is rectangular, and the number of the copper bars is multiple.

[0011] In order to shield the lower positioning plate, as a cast aluminum rotor embedded with copper bars in the utility model, the number of the supporting springs and the number of the wedge blocks are both two.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The cast aluminum rotor embedded with the copper bar is provided with a rotating shaft, an aluminum block, a mounting hole, a copper bar, a lower positioning seat, a positioning handle, an upper positioning seat, an upper positioning plate and a wedge block. The copper bar is inserted into the aluminum block and is clamped and fixed by the upper positioning seat and the lower positioning seat. The positioning handle can fix the lower positioning plate once, and the wedge block can fix the lower positioning plate twice, so that the copper bar can be installed more firmly. The copper bar can be disassembled by simply releasing the position restriction of the wedge block and the positioning handle on the lower positioning plate. The disassembly and assembly is more convenient and labor-saving, and the rotor is easy to repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the axonometric structure of a cast aluminum rotor embedded with copper bars in Example 1 of the present utility model;

[0015] Figure 2 This is a schematic diagram of the axonometric structure of a cast aluminum rotor embedded with copper bars in Example 1 of the present utility model;

[0016] Figure 3 This is a schematic diagram of the axonometric structure of a cast aluminum rotor embedded with copper bars in Example 1 of the present utility model;

[0017] Figure 4 This is one of the partially enlarged structural diagrams of a cast aluminum rotor embedded with copper bars in Example 1 of the present utility model;

[0018] Figure 5 This is a second partially enlarged structural diagram of a cast aluminum rotor embedded with copper bars in Example 1 of the present utility model;

[0019] Figure 6 This is the third partially enlarged structural diagram of a cast aluminum rotor embedded with copper bars in Example 1 of the present utility model.

[0020] In the figure: 1. Rotating shaft; 2. Aluminum block; 3. Mounting hole; 4. Copper bar; 5. Lower positioning seat; 6. Lower positioning plate; 7. Positioning handle; 8. Upper positioning seat; 9. Upper positioning plate; 10. Storage slot; 11. Support spring; 12. Wedge block; 13. Locking nut. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1

[0023] like Figure 1-6 As shown, a cast aluminum rotor embedded with copper bars includes a rotating shaft 1, an aluminum block 2 is fixedly connected to the outer surface of the rotating shaft 1, a mounting hole 3 is opened on the upper surface of the aluminum block 2, a copper bar 4 is inserted into the interior of the mounting hole 3, and the bottom end of the copper bar 4 is inserted into the interior of the lower positioning seat 5. The lower positioning seat 5 is fixedly mounted on the upper surface of the lower positioning plate 6, and the lower positioning plate 6 is sleeved on the outer surface of the rotating shaft 1. The lower positioning plate 6 and the rotating shaft 1 are connected through a positioning handle 7.

[0024] During specific use, the copper bar 4 is inserted into the aluminum block 2 through the coordination between the rotating shaft 1, aluminum block 2, mounting hole 3, copper bar 4, lower positioning seat 5, positioning handle 7, upper positioning seat 8, upper positioning disk 9 and wedge block 12, and is clamped and fixed by the upper positioning seat 8 and the lower positioning seat 5. The positioning handle 7 can fix the lower positioning disk 6 once, and the wedge block 12 can perform a secondary limit blocking and fixation on the lower positioning disk 6, which can make the installation of the copper bar 4 more stable, and the copper bar 4 can be disassembled by simply releasing the position limit of the wedge block 12 and the positioning handle 7 on the lower positioning disk 6. The disassembly and assembly is more convenient and labor-saving, and it is easy to repair the rotor.

[0025] In this embodiment, the top end of the copper bar 4 is inserted into the interior of the upper positioning seat 8 , the upper positioning seat 8 is fixedly mounted on the lower surface of the upper positioning plate 9 , and the upper positioning plate 9 is fixedly mounted on the outer surface of the rotating shaft 1 .

[0026] During specific use, the top end of the copper bar 4 can be fixed by arranging the upper positioning plate 9 and the upper positioning seat 8 .

[0027] In this embodiment, a receiving groove 10 is formed on the outer surface of the rotating shaft 1 , a support spring 11 is fixedly connected to the inner bottom wall of the receiving groove 10 , and a wedge block 12 is fixedly connected to the end of the support spring 11 away from the rotating shaft 1 .

[0028] During specific use, through the arrangement of the receiving groove 10 , the supporting spring 11 and the wedge block 12 , the wedge block 12 can shield the lower positioning plate 6 .

[0029] In this embodiment, an outer surface of the positioning handle 7 is provided with an external thread, and a locking nut 13 is threadedly connected to the outer surface of the positioning handle 7 .

[0030] During specific use, the locking nut 13 is provided to prevent the positioning handle 7 from being easily removed from the interior of the rotating shaft 1 .

[0031] In this embodiment, the shape of the mounting hole 3 is rectangular, and the number of the copper bars 4 is multiple.

[0032] During specific use, the arrangement of the mounting holes 3 facilitates the installation of the copper bars 4 .

[0033] In this embodiment, the number of the supporting springs 11 and the number of the wedge blocks 12 are both two.

[0034] During specific use, the arrangement of the two wedge-shaped blocks 12 can provide a better blocking effect on the lower positioning plate 6 .

[0035] Working principle: When the copper bar 4 needs to be installed, the staff can first insert the copper bar 4 into the installation hole 3, and then insert the top end of the copper bar 4 into the upper positioning seat 8. The staff then puts the lower positioning plate 6 on the rotating shaft 1, inserts the bottom end of the copper bar 4 into the lower positioning seat 5, and pushes the lower positioning plate 6 to move. The wedge block 12 can be squeezed to make the wedge block 12 retract into the storage groove 10. After the lower positioning plate 6 moves to the desired position, the wedge block 12 is reset under the action of the support spring 11 to cover the lower positioning plate 6. The staff can use the positioning handle 7 to fix the lower positioning plate 6 to ensure that the copper bar 4 is installed more firmly.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A cast aluminum rotor embedded with copper bars, comprising a rotating shaft (1), characterized in that: The outer surface of the rotating shaft (1) is fixedly connected to an aluminum block (2), the upper surface of the aluminum block (2) is provided with a mounting hole (3), the interior of the mounting hole (3) is plugged with a copper bar (4), the bottom end of the copper bar (4) is plugged into the interior of a lower positioning seat (5), the lower positioning seat (5) is fixedly mounted on the upper surface of a lower positioning plate (6), the lower positioning plate (6) is sleeved on the outer surface of the rotating shaft (1), and the lower positioning plate (6) is connected to the rotating shaft (1) via a positioning handle (7).

2. The cast aluminum rotor embedded with copper bars according to claim 1, characterized in that: The top end of the copper bar (4) is inserted into the interior of the upper positioning seat (8), the upper positioning seat (8) is fixedly mounted on the lower surface of the upper positioning plate (9), and the upper positioning plate (9) is fixedly mounted on the outer surface of the rotating shaft (1).

3. The cast aluminum rotor embedded with copper bars according to claim 1, characterized in that: The outer surface of the rotating shaft (1) is provided with a receiving groove (10), the inner bottom wall of the receiving groove (10) is fixedly connected to a support spring (11), and the end of the support spring (11) away from the rotating shaft (1) is fixedly connected to a wedge block (12).

4. The cast aluminum rotor embedded with copper bars according to claim 1, characterized in that: The outer surface of the positioning handle (7) is provided with an external thread, and the outer surface of the positioning handle (7) is threadedly connected to a locking nut (13).

5. The cast aluminum rotor embedded with copper bars according to claim 1, characterized in that: The shape of the mounting hole (3) is rectangular, and the number of the copper bars (4) is multiple.

6. The cast aluminum rotor embedded with copper bars according to claim 3, characterized in that: The number of the supporting springs (11) and the number of the wedge blocks (12) are both two.

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