Rotor forge piece of driving motor of electric automobile

Abstract

The utility model provides a rotor forging of a driving motor of an electric automobile. The electric automobile driving motor rotor forging comprises a rotating shaft, the rotating shaft is movably sleeved with a stamping piece, the rotating shaft is sleeved with an extrusion plate in a threaded mode, the rotating shaft is fixedly sleeved with a baffle, and the baffle is fixedly connected with a protective pad. According to the driving motor rotor forge piece of the electric automobile, the positioning rod is arranged, when a plurality of stamping sheets are installed and fixed, the stamping sheets are sleeved outside the rotating shaft, at the moment, the positioning rod is sleeved inside the stamping sheets, and the nut is rotated; according to the punching piece fixing device, the positioning rods are arranged, so that the nuts can extrude and fix the multiple punching pieces through the positioning rods, the effect of positioning and fixing the multiple punching pieces is achieved, the problem that the fixing effect is poor when the punching pieces are extruded through the motor shell extrusion pieces is solved, and the fastening effect after the punching pieces are fixed is improved; and therefore, the problem of looseness of the stamping sheet due to long-time vibration is avoided.

Description

Technical Field

[0001] The utility model relates to the field of rotor forgings, in particular to a rotor forging of an electric vehicle drive motor. Background Art

[0002] A permanent magnet generator refers to a power generation device that converts mechanical energy converted from thermal energy into electrical energy. The permanent magnet generator eliminates the excitation winding, carbon brush, and slip ring structure of the excitation generator. The whole machine has a simple structure, avoiding faults such as easy burning and breaking of the excitation winding of the excitation generator, and easy wear of the carbon brush and slip ring, with high reliability. A forging refers to a workpiece or blank obtained by forging deformation of a metal billet. By applying pressure to the metal billet to cause plastic deformation, its mechanical properties can be changed. Forgings can be divided into cold forging, warm forging, and hot forging according to the temperature of the billet during processing. Cold forging is generally processed at room temperature, and hot forging is processed at a temperature higher than the recrystallization temperature of the metal billet. Through forging, the looseness and holes of the metal can be eliminated, and the mechanical properties of the forging can be improved.

[0003] In the existing technology, such as the "rotor punching sheet forging of a permanent magnet generator" with the Chinese authorization publication number: CN208285090U, which includes a tube body, a connecting rod, a sector plate, and a receiving groove. The tube body is fixedly connected to the sector plate through the connecting rod. The receiving groove is located between the sector plate and the tube body. The surface of the sector plate is provided with a second groove, and both sides of the second groove are conductively connected to a third groove. A first groove is provided between the second groove and the connecting rod. The surface of the tube body is fixedly connected with a chromium plating layer. A through hole is provided in the middle position at the top of the tube body. The through hole includes a first cavity and a second cavity. A boss is provided at the bottom end of the first cavity. A positioning groove is provided on the inner wall of the tube body. The utility model has novel design, simple structure, convenient operation and good use effect, is convenient for production and manufacturing with low cost, accelerates heat dissipation, avoids heat accumulation, improves the safety of use, enhances hardness at the same time, reduces losses caused by friction, has excellent corrosion resistance, is convenient for installing plugins, has good stability, and prolongs the life of the rotor.

[0004] In the existing technology, when fixing the punching sheet, since the punching sheet needs to be fixed by extrusion of the motor housing, when the motor housing is loose, it is easy to cause looseness inside several punching sheets, thereby greatly affecting the motor power.

[0005] Therefore, it is necessary to provide a rotor forging of an electric vehicle drive motor to solve the above technical problems. Summary of the Utility Model

[0006] The utility model provides a rotor forging of an electric vehicle drive motor, which solves the problem that when the punching sheet needs to be fixed by extrusion of the motor housing, when the motor housing is loose, it is easy to cause looseness inside several punching sheets, thereby greatly affecting the motor power.

[0007] To solve the above technical problems, a forging of an electric vehicle drive motor rotor provided by the utility model includes a rotating shaft. An impact sheet is movably sleeved outside the rotating shaft. An extrusion plate is threadedly sleeved outside the rotating shaft. A baffle is fixedly sleeved outside the rotating shaft. A protective pad is fixedly connected to the outside of the baffle. A limiting groove is formed inside the extrusion plate. A positioning rod is movably sleeved inside the limiting groove. A nut is threadedly sleeved at one end of the positioning rod. A receiving groove is formed inside the impact sheet. A permanent magnet is movably sleeved inside the receiving groove. A positioning column is fixedly connected to the outside of the rotating shaft. Heat dissipation holes are formed inside the impact sheet.

[0008] Preferably, the positioning rod is movably sleeved inside the impact sheet, and the number of the positioning rods is three.

[0009] Preferably, the extrusion plate is perpendicular to the rotating shaft, and the extrusion plate is parallel to the baffle.

[0010] Preferably, the number of the limiting grooves is three, and the three limiting grooves are evenly distributed around the rotating shaft.

[0011] Preferably, the material of the protective pad is silicon steel material, and the protective pad is in close contact with the impact sheet.

[0012] Preferably, the permanent magnet is adapted to the receiving groove, and the number of the permanent magnets is several.

[0013] Preferably, the positioning column is movably sleeved inside the impact sheet, and the number of the positioning columns is three.

[0014] Preferably, the number of the heat dissipation holes is eight, and the eight heat dissipation holes are evenly distributed inside the impact sheet.

[0015] Compared with the related art, a forging of an electric vehicle drive motor rotor provided by the utility model has the following beneficial effects:

[0016] The utility model provides a forging of an electric vehicle drive motor rotor. By setting the positioning rod, when installing and fixing several impact sheets, the impact sheets are sleeved outside the rotating shaft. At this time, the positioning rods are sleeved inside the impact sheets and the nuts are rotated, so that the nuts can squeeze and fix several impact sheets through the positioning rods, thereby achieving the positioning and fixing effect of several impact sheets, avoiding the problem of poor fixing effect when the impact sheets are squeezed by the motor housing extrusion sheet, improving the fastening effect after the impact sheets are fixed, and further avoiding the problem of loosening when the impact sheets vibrate for a long time;

[0017] By setting the positioning posts, when installing and fixing the stamping sheet, the stamping sheet is sleeved outside the positioning posts, enabling the positioning posts to limit the position of the stamping sheet, thus avoiding the problem of the stamping sheet rotating outside the rotating shaft when the rotating shaft rotates, and improving the stability of the position of the stamping sheet during rotation, that is, improving the stability of the rotor during rotation. Description of the Drawings

[0018] Figure 1 Schematic structural diagram of a preferred embodiment of a rotor forging of an electric vehicle drive motor provided by the present utility model;

[0019] Figure 2 is Figure 1 Front view of the rotating shaft in a rotor forging of an electric vehicle drive motor shown;

[0020] Figure 3 is Figure 1 Front view of the stamping sheet in a rotor forging of an electric vehicle drive motor shown;

[0021] Figure 4 is Figure 1 Front view of the positioning rod in a rotor forging of an electric vehicle drive motor shown.

[0022] Reference numerals in the figure: 1, rotating shaft; 2, stamping sheet; 3, extrusion plate; 4, baffle; 5, protective pad; 6, limiting groove; 7, positioning rod; 8, nut; 9, accommodating groove; 10, permanent magnet; 11, positioning post; 12, heat dissipation hole. Detailed Embodiment

[0023] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0024] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , wherein, Figure 1 Schematic structural diagram of a preferred embodiment of a rotor forging of an electric vehicle drive motor provided by the present utility model; Figure 2 is Figure 1 Front view of the rotating shaft in a rotor forging of an electric vehicle drive motor shown; Figure 3 is Figure 1 Front view of the stamping sheet in a rotor forging of an electric vehicle drive motor shown; Figure 4 is Figure 1The front view of the positioning rod in the rotor forging of an electric vehicle drive motor. An electric vehicle drive motor rotor forging includes a rotating shaft 1. A stamping sheet 2 is movably sleeved outside the rotating shaft 1. An extrusion plate 3 is threadedly sleeved outside the rotating shaft 1. A baffle 4 is fixedly sleeved outside the rotating shaft 1. A protective pad 5 is fixedly connected to the outside of the baffle 4. A limiting groove 6 is provided inside the extrusion plate 3. A positioning rod 7 is movably sleeved inside the limiting groove 6. A nut 8 is threadedly sleeved at one end of the positioning rod 7. A receiving groove 9 is provided inside the stamping sheet 2. A permanent magnet 10 is movably sleeved inside the receiving groove 9. A positioning column 11 is fixedly connected to the outside of the rotating shaft 1. Heat dissipation holes 12 are provided inside the stamping sheet 2.

[0025] The positioning rod 7 is movably sleeved inside the stamping sheet 2, and the number of the positioning rods 7 is three. By setting the positioning rod 7, when installing and fixing several stamping sheets 2, the stamping sheets 2 are sleeved outside the rotating shaft 1. At this time, the positioning rod 7 is sleeved inside the stamping sheet 2 and the nut 8 is rotated, so that the nut 8 can squeeze and fix several stamping sheets 2 through the positioning rod 7, thereby achieving the positioning and fixing effect of several stamping sheets 2, avoiding the problem of poor fixing effect when the stamping sheet 2 is squeezed by the motor housing extrusion sheet, improving the fastening effect after the stamping sheet 2 is fixed, and further avoiding the problem of loosening when the stamping sheet 2 vibrates for a long time.

[0026] The extrusion plate 3 is perpendicular to the rotating shaft 1, and the extrusion plate 3 is parallel to the baffle 4. By setting the extrusion plate 3, when fixing several stamping sheets 2, several stamping sheets 2 are sleeved outside the rotating shaft 1. At this time, the extrusion plate 3 is rotated, so that the extrusion plate 3 can drive the stamping sheet 2 to be tightly squeezed outside the baffle 4, so that the extrusion plate 3 and the baffle 4 can squeeze and fix several stamping sheets 2 outside the rotating shaft 1, thereby improving the convenience when installing and fixing the stamping sheet 2.

[0027] The number of the limiting grooves 6 is three, and the three limiting grooves 6 are evenly distributed around the rotating shaft 1. By setting the limiting groove 6, when fixing the positioning rod 7, the limiting groove 6 can limit the positioning rod 7, avoiding the problem of position deviation when the positioning rod 7 is installed and fixed, and improving the stability of the position of the positioning rod 7.

[0028] The material of the protective pad 5 is silicon steel material, and the protective pad 5 is in close contact with the stamping sheet 2. By setting the protective pad 5, when squeezing and fixing the stamping sheet 2, the protective pad 5 can protect the stamping sheet 2, thereby improving the flatness of the surface of the baffle 4, avoiding the problem of bending when the stamping sheet 2 is strongly squeezed, and improving the protection effect when installing the stamping sheet 2.

[0029] The permanent magnet 10 is adapted to the receiving groove 9, and the number of the permanent magnets 10 is several. By providing the permanent magnets 10, when assembling and fixing the rotor, the permanent magnets 10 are sleeved inside the receiving groove 9, so that the receiving groove 9 can limit the permanent magnets 10, and several permanent magnets 10 can be evenly distributed inside the stamping sheet 2, thus achieving the limiting effect of the permanent magnets 10, that is, improving the convenience of the motor rotor assembly.

[0030] The positioning posts 11 are movably sleeved inside the stamping sheet 2, and the number of the positioning posts 11 is three. By providing the positioning posts 11, when installing and fixing the stamping sheet 2, the stamping sheet 2 is sleeved outside the positioning posts 11, so that the positioning posts 11 can limit the position of the stamping sheet 2, avoiding the problem that the stamping sheet 2 rotates outside the rotating shaft 1 when the rotating shaft 1 rotates, thereby improving the stability of the position of the stamping sheet 2 when rotating, that is, improving the stability of the rotor when rotating.

[0031] The number of the heat dissipation holes 12 is eight, and the eight limiting grooves 6 are evenly distributed inside the stamping sheet 2. By providing the heat dissipation holes 12, when the temperature of the motor rises during long-term rotation, the air inside the stamping sheet 2 can be guided to the inside of the limiting groove 6 through the heat dissipation holes 12, and then discharged to the outside of the rotor, thereby improving the heat dissipation speed of the rotor, and thus improving the heat dissipation effect of the rotor during long-term rotation.

[0032] The working principle of a forging of an electric vehicle drive motor rotor provided by the present utility model is as follows:

[0033] Step 1: First, when installing and fixing several stamping sheets 2, the stamping sheets 2 are sleeved outside the rotating shaft 1. At this time, the positioning rod 7 is sleeved inside the stamping sheet 2 and the nut 8 is rotated, so that the nut 8 can squeeze and fix several stamping sheets 2 through the positioning rod 7, thereby achieving the positioning and fixing effect of several stamping sheets 2, avoiding the problem of poor fixing effect when the stamping sheet 2 is squeezed by the motor housing extrusion sheet, thus improving the fastening effect after the stamping sheet 2 is fixed, and further avoiding the problem of loosening when the stamping sheet 2 vibrates for a long time. When fixing several stamping sheets 2, several stamping sheets 2 are sleeved outside the rotating shaft 1. At this time, the extrusion plate 3 is rotated, so that the extrusion plate 3 can drive the stamping sheet 2 to be tightly squeezed outside the baffle 4, so that the extrusion plate 3 and the baffle 4 can squeeze and fix several stamping sheets 2 outside the rotating shaft 1, thereby improving the convenience of installing and fixing the stamping sheet 2. When fixing the positioning rod 7, the limit groove 6 can limit the positioning rod 7, avoiding the problem of position deviation when the positioning rod 7 is installed and fixed, thus improving the stability of the position of the positioning rod 7. When squeezing and fixing the stamping sheet 2, the protective pad 5 can protect the stamping sheet 2, thus improving the flatness of the surface of the baffle 4, avoiding the problem of bending of the stamping sheet 2 when it is strongly squeezed, and thus improving the protection effect during the installation of the stamping sheet 2;

[0034] Step 2: When assembling and fixing the rotor, the permanent magnet 10 is sleeved inside the receiving groove 9, so that the receiving groove 9 can limit the permanent magnet 10, and several permanent magnets 10 can be evenly distributed inside the stamping sheet 2, thereby achieving the limiting effect of the permanent magnet 10, that is, improving the convenience of assembling the motor rotor. When installing and fixing the stamping sheet 2, the stamping sheet 2 is sleeved outside the positioning column 11, so that the positioning column 11 can limit the position of the stamping sheet 2, avoiding the problem that the stamping sheet 2 rotates outside the rotating shaft 1 when the rotating shaft 1 rotates, thus improving the stability of the position of the stamping sheet 2 when it rotates, that is, improving the stability of the rotor when it rotates. When the temperature of the motor rises during long-term rotation, the air inside the stamping sheet 2 can be guided to the inside of the limit groove 6 through the heat dissipation holes 12 and then discharged to the outside of the rotor, thereby improving the heat dissipation speed of the rotor and thus improving the heat dissipation effect during long-term rotation of the rotor.

[0035] Compared with the related technology, an electric vehicle drive motor rotor forging provided by the present utility model has the following beneficial effects:

[0036] By setting the positioning rod 7, when installing and fixing a plurality of stamping sheets 2, the stamping sheet 2 is sleeved outside the rotating shaft 1. At this time, the positioning rod 7 is sleeved inside the stamping sheet 2 and the nut 8 is rotated, so that the nut 8 can squeeze and fix a plurality of stamping sheets 2 through the positioning rod 7, thereby achieving the positioning and fixing effect of a plurality of stamping sheets 2, avoiding the problem of poor fixing effect when the stamping sheet 2 is squeezed by the motor housing extrusion sheet, thus improving the fastening effect after the stamping sheet 2 is fixed, and further avoiding the problem of loosening when the stamping sheet 2 vibrates for a long time.

[0037] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A rotor forging for an electric vehicle drive motor, comprising a rotating shaft (1), characterized in that: The outer part of the rotating shaft (1) is movably sleeved with a punching sheet (2), the outer part of the rotating shaft (1) is threadedly sleeved with an extrusion plate (3), the outer part of the rotating shaft (1) is fixedly sleeved with a baffle plate (4), the outer part of the baffle plate (4) is fixedly connected with a protective pad (5), the inner part of the extrusion plate (3) is provided with a limiting groove (6), the inner part of the limiting groove (6) is movably sleeved with a positioning rod (7), one end of the positioning rod (7) is threadedly sleeved with a nut (8), the inner part of the punching sheet (2) is provided with a receiving groove (9), the inner part of the receiving groove (9) is movably sleeved with a permanent magnet (10), the outer part of the rotating shaft (1) is fixedly connected with a positioning column (11), and the inner part of the punching sheet (2) is provided with a heat dissipation hole (12).

2. The electric vehicle drive motor rotor forging according to claim 1, characterized in that: The positioning rods (7) are movably sleeved inside the punching sheet (2), and there are three positioning rods (7).

3. The electric vehicle drive motor rotor forging according to claim 1, characterized in that: The extrusion plate (3) and the rotating shaft (1) are perpendicular to each other, and the extrusion plate (3) and the baffle plate (4) are parallel to each other.

4. The electric vehicle drive motor rotor forging according to claim 1, characterized in that: The number of the limiting grooves (6) is three, and the three limiting grooves (6) are evenly distributed around the rotating shaft (1).

5. The electric vehicle drive motor rotor forging according to claim 1, characterized in that: The material of the protective pad (5) is silicon steel material, and the protective pad (5) is in close contact with the stamping sheet (2).

6. The electric vehicle drive motor rotor forging according to claim 1, characterized in that: The permanent magnet (10) is adapted to the accommodating groove (9), and there are a plurality of permanent magnets (10).

7. The electric vehicle drive motor rotor forging according to claim 1, characterized in that: The positioning posts (11) are movably sleeved inside the punching sheet (2), and there are three positioning posts (11).

8. The electric vehicle drive motor rotor forging according to claim 1, characterized in that: The number of the heat dissipation holes (12) is eight, and the eight limiting grooves (6) are evenly distributed inside the stamping sheet (2).

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