Crankshaft electro-corrosion protection device and motor

Abstract

The utility model relates to a crankshaft electrocorrosion protection device and a motor, comprising a substrate and a plurality of fiber tubes, the substrate is provided with a plurality of fixed discs, one fixed disc on a single substrate corresponds to one fiber tube, the fiber tubes are fixed on the fixed discs, conductive fiber bundles are fixed in the fiber tubes, and one end of each conductive fiber bundle is exposed out of the fiber tubes. The crankshaft electro-corrosion protection device is simple in structure and convenient to install, production links are split, production efficiency can be improved, production cost can be reduced, and an automation scheme is friendly and easy to implement.

Description

Technical Field

[0001] The utility model relates to the field of motor protection devices, in particular to a machine shaft electrical corrosion protection device and a motor. Background Art

[0002] At present, the power density of automotive servo motors is relatively high, which further increases the voltage and frequency of existing servo motors. Moreover, in the case of inevitable magnetic leakage, the induced voltage generated by the motor rotor is getting higher and higher. When the oil film in the bearing cannot achieve effective insulation performance, the energy accumulated by the rotor will form an electric arc when breaking through the insulating oil film, damaging the bearing balls and raceways. The injured balls and raceways will become the weak points of the entire bearing oil film, thereby increasing the frequency of the bearing being damaged by the electric arc and accelerating the damage speed. Therefore, during the use of the motor, a bearing protection device is usually used to protect the bearing of the motor. The bearing protection device can effectively control the shaft voltage and bearing current. The existing bearing protection scheme is to establish a shaft voltage venting channel outside the bearing to protect the bearing from electrical corrosion by dredging and reducing the voltage, thereby extending the service life of the bearing.

[0003] The prior art (CN 217643069 U) discloses a fiber holder, a bearing electrical corrosion protection conductive ring and a motor. The fiber holder is installed by a bracket and a cover plate is fixed on the outside. However, the structure is relatively complex, the installation process is cumbersome, and the manufacturing cost is high. Utility Model Content

[0004] In order to solve the technical problems existing in the prior art, the utility model provides a machine shaft electrical corrosion protection device.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A machine shaft electrical corrosion protection device comprises a substrate and a plurality of fiber tubes. The substrate is provided with a plurality of fixed disks. One fixed disk on a single substrate corresponds to one fiber tube. The fiber tube is fixed on the fixed disk. A conductive fiber bundle is fixed in the fiber tube and one end of the conductive fiber bundle is exposed from the fiber tube.

[0007] As a preferred technical solution, the fiber tube is welded to the fixing plate, and the welding methods include: tin paste welding, high frequency welding, laser welding, and ultrasonic welding.

[0008] As a preferred technical solution, the substrate is one or more substrates. When there are multiple substrates, between every two adjacent substrates, two sides of the fiber tube are fixedly connected to the fixing plates of the two substrates respectively.

[0009] As a preferred technical solution, the single substrate is an integrally formed structure or a multi-module combination structure.

[0010] As a preferred technical solution, it is characterized in that a hanging platform is provided at the end of the fiber tube that is exposed away from the conductive fiber bundle.

[0011] As a preferred technical solution, a notch matching the hanging platform is provided on the base plate.

[0012] As a preferred technical solution, the shape of the substrate includes rectangle, sector or ring.

[0013] As a preferred technical solution, the cross-sectional shape of the fiber tube includes circular, elliptical, rectangular, oblate, hexagonal, and octagonal.

[0014] As a preferred technical solution, a protective shell is further provided outside the substrate and the fiber tube, and the protective shell covers or partially covers the substrate and the fiber tube.

[0015] As a preferred technical solution, the protective shell is connected to the base plate, and the connection methods include snap-fitting, welding, riveting, and screwing.

[0016] As a preferred technical solution, a motor includes a shaft electrical corrosion protection device, wherein a substrate of the device is connected to a housing of the motor, and an exposed end of a conductive fiber bundle is in contact with the shaft of the motor.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The machine shaft electrical corrosion protection device of the utility model has a simple structure, is easy to install, splits the production links, can improve production efficiency and reduce production costs. The production efficiency is improved by at least 15%, and the production cost is reduced by 10%-20% compared with the original plan. In addition, the automation plan is more friendly and easier to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the disassembled state of the embodiment 1 of the machine shaft electrical corrosion protection device of the utility model;

[0020] Figure 2 It is a top view of Embodiment 1 of the electric corrosion protection device for the crankshaft of the utility model;

[0021] Figure 3 It is a schematic diagram of the disassembled state of the embodiment 2 of the machine shaft electrical corrosion protection device of the utility model;

[0022] Figure 4 It is a rear view of Embodiment 2 of the electric corrosion protection device for the crankshaft of the utility model;

[0023] Figure 5 It is a schematic diagram of the disassembled state of the embodiment 3 of the electric corrosion protection device for the machine shaft of the utility model;

[0024] Figure 6It is a rear view of Embodiment 3 of the electric corrosion protection device for the crankshaft of the utility model;

[0025] Figure 7 It is a schematic diagram of the disassembled state of the embodiment 4 of the machine shaft electrical corrosion protection device of the utility model;

[0026] Figure 8 This is a schematic diagram of the assembly state of Embodiment 4 of the electric corrosion protection device for the machine shaft of the utility model;

[0027] Fig. 9 It is a schematic diagram of the disassembled state of Embodiment 5 of the electric corrosion protection device for the crankshaft of the utility model;

[0028] Fig.10 It is a side view of Embodiment 5 of the electric corrosion protection device for the crankshaft of the utility model;

[0029] Fig.11 It is a schematic diagram of the disassembled state of Embodiment 6 of the electric corrosion protection device for the machine shaft of the utility model;

[0030] Fig.12 It is a side view of Example 6 of the machine shaft electrical corrosion protection device of the present utility model.

[0031] In the figure: 1. base plate; 11. fixing plate; 12. lead-out portion; 2. fiber tube; 3. protective shell; 31. cover shell; 32. annular cover plate. DETAILED DESCRIPTION

[0032] The technical solution of the utility model is further described below in conjunction with specific implementation methods:

[0033] Example 1

[0034] like Figure 1 As shown, a shaft electrical corrosion protection device comprises a substrate 1 and a plurality of fiber tubes 2. The substrate 1 is provided with a plurality of fixed disks 11, and each fixed disk 11 on the substrate 1 corresponds to one fiber tube 2. Figure 2 As shown, the fiber tube 2 is welded to the fixed plate 11 by tin paste, and the fiber tube 2 can also be welded to the fixed plate 11 by high-frequency welding, laser welding, ultrasonic welding, etc. High-frequency welding and laser welding will generate high temperature during operation, which may damage the conductive fiber bundle in the fiber tube 2. Therefore, the tin paste welding method is preferably used, which has relatively low temperature requirements.

[0035] The substrate 1 is connected to the housing of the motor, a conductive fiber bundle is fixed in the fiber tube 2, and one end of the conductive fiber bundle is exposed from the fiber tube 2, and the exposed conductive fiber bundle is in contact with the shaft of the motor. A hanging platform is provided at the end of the fiber tube 2 away from the exposed conductive fiber bundle. A notch matching the hanging platform is provided at the outer edge of the substrate 1.

[0036] In this embodiment, the substrate 1 is rectangular in shape and is an integrally formed structure. In practice, the substrate 1 can also be designed as a multi-module combination structure.

[0037] The cross-sectional shape of the fiber tube 2 can be circular, elliptical, rectangular, oblate, hexagonal, octagonal, etc. In this embodiment, it is circular.

[0038] Example 2

[0039] like Figure 3 As shown, a shaft electrical corrosion protection device comprises a substrate 1 and a plurality of fiber tubes 2. The substrate 1 is provided with a plurality of fixed disks 11. Each fixed disk 11 on the substrate 1 corresponds to one fiber tube 2. Figure 4 As shown, the fiber tube 2 is welded on the fixing plate 11, and the welding methods include tin paste welding, high frequency welding, laser welding, and ultrasonic welding. Preferably, tin paste welding is adopted.

[0040] The substrate 1 is connected to the housing of the motor, a conductive fiber bundle is fixed in the fiber tube 2 and one end of the conductive fiber bundle is exposed out of the fiber tube 2, and the exposed conductive fiber bundle is in contact with the shaft of the motor.

[0041] A hanging platform is provided at one end of the fiber tube 2 which is away from the conductive fiber bundle and exposed. A notch matching the hanging platform is provided at the outer edge of the base plate 1.

[0042] In this embodiment, the substrate 1 is fan-shaped, and the cross-sectional shape of the fiber tube 2 is circular.

[0043] Example 3

[0044] like Figure 5 As shown, a shaft electrical corrosion protection device includes a substrate 1 and a plurality of fiber tubes 2. The substrate 1 is connected to the housing of the motor. A plurality of fixing plates 11 are arranged on the substrate 1. One fixing plate 11 on the substrate 1 corresponds to one fiber tube 2. Figure 6 As shown, the fiber tube 2 is welded on the fixed plate 11, and the welding methods include tin paste welding, high frequency welding, laser welding, and ultrasonic welding. Preferably, tin paste welding is adopted. A conductive fiber bundle is fixed in the fiber tube 2, and one end of the conductive fiber bundle is exposed from the fiber tube 2, and the exposed conductive fiber bundle is in contact with the shaft of the motor. A hanging platform is provided at the end of the fiber tube 2 away from the exposed conductive fiber bundle. A notch matching the hanging platform is provided at the outer edge of the substrate 1.

[0045] In this embodiment, the substrate 1 is annular in shape. In order to facilitate taking and installation, a lead-out portion 12 may be designed on the annular substrate 1 .

[0046] In this embodiment, the cross-sectional shape of the fiber tube 2 is circular.

[0047] Example 4

[0048] like Figure 7As shown, a shaft electrical corrosion protection device includes a substrate 1, a protective shell 3 and a plurality of fiber tubes 2. The substrate 1 is connected to the housing of the motor. A plurality of fixed disks 11 are arranged on the substrate 1. One fixed disk 11 on the substrate 1 corresponds to one fiber tube 2. Figure 6 As shown, the fiber tube 2 is welded on the fixed plate 11, and the welding methods include tin paste welding, high frequency welding, laser welding, and ultrasonic welding. Preferably, tin paste welding is adopted. A conductive fiber bundle is fixed in the fiber tube 2, and one end of the conductive fiber bundle is exposed from the fiber tube 2, and the exposed conductive fiber bundle is in contact with the shaft of the motor. A hanging platform is provided at the end of the fiber tube 2 away from the exposed conductive fiber bundle. The substrate 1 is provided with notches distributed circumferentially and matching with the hanging platform.

[0049] In this embodiment, the substrate 1 is ring-shaped.

[0050] like Figure 8 As shown, the protective shell 3 partially covers the substrate 1 and the fiber tube 2. The protective shell 3 is connected to the substrate 1, and the connection methods include buckling, welding, riveting, and screwing. In this embodiment, the protective shell 3 and the substrate 1 are connected by buckling and riveting. Specifically, a buckling connection structure that matches each other is set at the edges of the protective shell 3 and the substrate 1, and riveting holes are set on the protective shell 3 and the substrate 1, and then connected with rivets. In this embodiment, a circumferentially arranged partition is also fixed inside the protective shell 3, which divides the annular space inside the protective shell 3 into small spaces for accommodating the fiber tube 2. The protective shell 3 can make the structure of the device more solid, and play a role in preventing bumps, supporting fixation, and dust protection.

[0051] In this embodiment, the cross-sectional shape of the fiber tube 2 is circular.

[0052] Example 5

[0053] like Fig. 9 As shown, a shaft electrical corrosion protection device comprises four substrates 1 and a plurality of fiber tubes 2. A plurality of fixed disks 11 are arranged on the substrates 1. One fixed disk 11 on a single substrate 1 corresponds to one fiber tube 2. A layer of dry fiber tubes 2 is arranged between each two adjacent substrates 1. Fig.10 As shown, the upper and lower sides of a layer of fiber tube 2 are respectively welded to the fixing plates 11 of the upper and lower substrates 1, the substrate 1 is connected to the housing of the motor, a conductive fiber bundle is fixed in the fiber tube 2 and one end of the conductive fiber bundle is exposed from the fiber tube 2, and the exposed conductive fiber bundle is in contact with the shaft of the motor. A hanging platform is provided at the end of the fiber tube 2 away from the exposed conductive fiber bundle. A notch matching the hanging platform is provided at the outer edge of the substrate 1.

[0054] In this embodiment, the substrate 1 is annular in shape, and the cross-sectional shape of the fiber tube 2 is circular.

[0055] Example 6

[0056] like Fig.11 and Fig.12 As shown, based on Example 5, this embodiment adds a protective shell 3 outside the substrate 1 and the fiber tube 2, and the protective shell 3 wraps the portion other than the exposed end of the conductive fiber bundle in the device, and the protective shell 3 is fixedly connected to the housing of the motor.

[0057] In this embodiment, the protective shell 3 includes a cylindrical cover shell 31 and an annular cover plate 32. The cover shell 31 and the annular cover plate 32 are both annular, so that the device can be mounted on the shaft of the motor. The substrate 1 and the fiber tube 2 are fixed in the cover shell 31 and then covered with the annular cover plate 32. This can make the structure of the device more solid and play a role in preventing bumps, supporting fixation, and dust protection.

[0058] This embodiment is only a further explanation of the present invention, not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it will be protected by the patent law.

Claims

1. A machine shaft electrical corrosion protection device, characterized in that: It comprises a base plate and a plurality of fiber tubes. The base plate is provided with a plurality of fixed disks. One fixed disk on a single base plate corresponds to one fiber tube. The fiber tube is fixed on the fixed disk. A conductive fiber bundle is fixed in the fiber tube and one end of the conductive fiber bundle is exposed from the fiber tube.

2. The electric corrosion protection device for the crankshaft according to claim 1, characterized in that: The fiber tube is welded on the fixing plate, and the welding methods include: tin paste welding, high frequency welding, laser welding, and ultrasonic welding.

3. The electric corrosion protection device for the crankshaft according to claim 1, characterized in that: The base plate may be one or more base plates. When there are multiple base plates, the two sides of the fiber tube between each two adjacent base plates are respectively fixedly connected to the fixing plates of the two base plates.

4. The electric corrosion protection device for the crankshaft according to claim 1, characterized in that: The single base plate is an integrally formed structure or a multi-module combined structure.

5. The electric corrosion protection device for the crankshaft according to claim 1, characterized in that: A hanging platform is provided at one end of the fiber tube that is exposed away from the conductive fiber bundle.

6. The machine shaft electrical corrosion protection device according to claim 5, characterized in that: The base plate is provided with a notch matching the hanging platform.

7. The electric corrosion protection device for the crankshaft according to claim 1, characterized in that: The shape of the substrate includes a rectangle, a sector or a ring.

8. The electric corrosion protection device for the crankshaft according to claim 1, characterized in that: The cross-sectional shapes of the fiber tube include circular, elliptical, rectangular, oblate, hexagonal, and octagonal.

9. The electric corrosion protection device for the crankshaft according to claim 1, characterized in that: A protective shell is also provided outside the substrate and the fiber tube, and the protective shell covers or partially covers the substrate and the fiber tube.

10. The electric corrosion protection device for the crankshaft according to claim 9, characterized in that: The protective shell is connected to the base plate by means of buckling, welding, riveting and screwing.

11. A motor, comprising the shaft electrical corrosion protection device according to any one of claims 1 to 10, characterized in that: The substrate of the device is connected to the shell of the motor, and the exposed end of the conductive fiber bundle is in contact with the shaft of the motor.

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