Device for preventing electric corrosion of motor bearing and motor

Abstract

The utility model relates to the bearing protection ring technology field, and discloses a motor bearing electrocorrosion prevention device and a motor, the motor bearing electrocorrosion prevention device comprises a plurality of fixed shafts and a plurality of conductive fibers, each fixed shaft comprises a middle shaft and two anti-drop covers, the middle shaft and the two anti-drop covers are formed in one step, and the conductive fibers are arranged on the middle shaft and the two anti-drop covers. And the two anti-falling covers are respectively arranged at the top and the bottom of the intermediate shaft. According to the utility model, the conductive fiber is wound around the middle shaft by a half circle, the fixing sheet is arranged to clamp the conductive fiber, and welding is carried out at the welding positions at the two ends of the fixing sheet, so that the two sides of the fixing sheet are combined, and a tubular channel is formed in the middle to fix the conductive fiber and form a conduction assembly; according to the utility model, the conductive fibers can be firmly installed, the conductive fibers can be prevented from flying off in the using process, the conductive fibers are supported and pressed to achieve better conductive performance, and the poor contact is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing protection rings, and more specifically, to a device for preventing electric corrosion of motor bearings and a motor. Background Art

[0002] At present, during the use of the motor, a bearing protection device is used to protect the motor bearing to avoid serious electrical corrosion of the motor bearing and to ensure the service life of the motor; however, the existing bearing protection device adopts interference fit, which may deform in some areas during use, resulting in poor contact between the conductive fiber and the bearing, and poor conduction effect; there are also methods of sealing with screws at the rear end, which not only has a complicated process, but also the conductive fiber is prone to falling off due to loose fixation. Therefore, we propose a device for preventing electrical corrosion of motor bearings to solve the above-mentioned problems. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a device for preventing electric corrosion of motor bearings, which has the advantage of high conduction.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a device for preventing electric corrosion of motor bearings, comprising:

[0005] A metal bracket, the metal bracket is in an annular shape as a whole, and is provided with at least one mounting groove, wherein the opening direction of the mounting groove is toward the center of the metal bracket;

[0006] A conducting component, the conducting component is composed of a fixed shaft and a fixed sheet;

[0007] The conductive fiber is fixed in a conductive component, and the conductive component is accommodated in the mounting groove and extends out from the center of the metal bracket.

[0008] As a preferred technical solution of the utility model, the fixed shaft includes an intermediate shaft and two anti-detachment covers, the intermediate shaft and the two anti-detachment covers are formed at one time, the two anti-detachment covers are respectively arranged at the top and bottom of the intermediate shaft, the conductive fiber is wound around the intermediate shaft, and the fixed sheet is clamped and arranged on the outside of the conductive fiber.

[0009] As a preferred technical solution of the present utility model, the metal bracket is made of conductive material.

[0010] As a preferred technical solution of the utility model, welding positions are provided on both sides of the fixing plate for welding, so that the two sides of the fixing plate are combined, and a tubular channel is formed in the middle for clamping and fixing the conductive fiber.

[0011] As a preferred technical solution of the utility model, the inner ends of both sides of the fixing plate are opened outwards to form a V-shape.

[0012] A motor, comprising a motor housing and a motor rotating part, wherein the motor rotating part is used to conduct electricity out of the ground, and is characterized in that it also includes a device for preventing motor bearing electrical corrosion as described in any of the above items, wherein the device for preventing motor bearing electrical corrosion is located in the motor housing and is sleeved outside the motor rotating part, and the device for preventing motor bearing electrical corrosion is used to electrically connect the motor rotating part and the motor housing.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model has the conductive fiber wrap around the middle shaft for one circle, and the fixing sheet is loaded to clamp the conductive fiber, and welding is performed at the welding positions at both ends of the fixing sheet to combine the two sides of the fixing sheet, and a tubular channel is formed in the middle to fix the conductive fiber, forming a conductive component, and then the fixing sheet is pressed into the inside of the installation groove to complete the assembly work, and the whole assembly process is relatively simple; the conductive fiber can be restricted by the set fixing sheet, so that it is firmly installed, and the conductive fiber can be prevented from scattering during use, so as to support and press the conductive fiber to achieve better conductive performance and avoid poor contact; the application is applied to the motor, overcomes the problem of electrical corrosion of the bearing, and achieves the effect of extending the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a top view schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the assembly of the conductive component of the utility model;

[0018] Figure 4 It is a schematic diagram of each structure of the conductive component of the utility model;

[0019] Figure 5 It is a top view schematic diagram of the conductive component of the utility model;

[0020] Figure 6 It is a schematic diagram of the cross-sectional structure of the conductive component of the utility model.

[0021] In the figure: 1, fixed shaft; 101, intermediate shaft; 102, anti-drop cover; 2, fixed plate; 201, welding position; 3, conductive fiber; 4, metal bracket; 5, mounting groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1 to 6 As shown, the utility model provides a device for preventing electric corrosion of motor bearings, comprising:

[0024] A plurality of fixed shafts 1 and a plurality of conductive fibers 3, each fixed shaft 1 comprising an intermediate shaft 101 and two anti-detachment covers 102, the intermediate shaft 101 and the two anti-detachment covers 102 are formed in one step, the two anti-detachment covers 102 are respectively arranged at the top and the bottom of the intermediate shaft 101, the conductive fiber 3 is wound around the intermediate shaft 101, and a fixing sheet 2 is arranged outside the conductive fiber 3 to form a conductive component;

[0025] The metal bracket 4 is annular in shape and has at least one mounting groove 5 formed thereon. The opening direction of the mounting groove 5 faces the center of the metal bracket 4.

[0026] The conducting component is pressed into the installation groove 5, and the anti-drop covers 102 at the upper and lower ends are in interference contact with the installation groove 5;

[0027] The conductive fiber 3 is wound around the middle shaft 101, and the fixing sheet 2 is loaded to clamp the conductive fiber 3, and welding is performed at the welding positions 201 at both ends of the fixing sheet 2 to combine the two sides of the fixing sheet 2, and a tubular channel is formed in the middle to fix the conductive fiber 3 to form a conductive component, and the anti-detachment cover 102 at the top and bottom has a limiting effect, and then it is pressed into the installation groove 5 to complete the assembly work. The whole assembly process is relatively simple. The fixing sheet 2 can limit the conductive fiber 3, so that it is firmly installed, and can prevent the conductive fiber 3 from scattering during use, and play a role in supporting and pressing the conductive fiber 3 to achieve better conductive performance and avoid poor contact.

[0028] The installation position of the entire device is between the motor shaft and the housing. Similar to the bearing method, it can be installed by interference press fitting and screw fixation. The main installation position is the side of the motor bearing or the front and rear ends of the shaft.

[0029] When the motor is at a low speed, the present application uses the fixing plate 2 and the conductive fiber 3 as a medium to release the shaft voltage;

[0030] In the medium and high speed stages, the conductive fiber 3 becomes the main conductive medium, and the fixing plate 2 plays a supporting role, pressing the fiber to achieve better conductivity and provide better release performance for the shaft voltage;

[0031] After long-term use, the fixed plate 2 will be worn and shortened by the motor shaft, and still maintains good conductivity in the low-speed stage; in the medium and high speed stages, the conductivity decreases, but the supporting effect on the conductive fiber 3 is more obvious, and the conductivity of the conductive fiber 3 will not decrease, and it can also support the conductive fiber 3 well in the medium and high speed stages.

[0032] Wherein, the metal bracket 4 is made of conductive material;

[0033] By using the metal bracket 4 made of conductive material, the conduction performance of the entire device can be improved.

[0034] Wherein, welding positions 201 are provided on both sides of the fixing plate 2 for welding, so that the two sides of the fixing plate 2 are combined, and a tubular channel is formed in the middle for clamping and fixing the conductive fiber 3, and the top and bottom of the fixing plate 2 are both against the anti-drop cover 102;

[0035] By welding at the welding positions 201 at both ends of the fixing plate 2 to combine the two sides of the fixing plate 2, the conductive fiber 3 can be clamped and fixed, which has a limiting effect and makes it firmly installed;

[0036] By welding at the welding positions 201 at both ends of the fixing plate 2, the two sides of the fixing plate 2 are combined to form a tubular channel in the middle for fixing the conductive fiber 3. The conductive fiber 3 can be restricted and installed firmly to ensure that the conductive fiber 3 can continue to have good conductive performance, and the fixing plate 2 can be tightened and restricted by the anti-detachment covers 102 at the upper and lower ends.

[0037] The inner ends of the two sides of the fixing plate 2 are opened outwards to form a V shape;

[0038] The conductive fiber 3 in the middle is closely attached to one side of the fixing plate 2, and there is a certain gap between the interference fit part at the bottom and the fixing plate 2. After endurance, when the V-shaped area at the lower end of the fixing plate 2 is shorter due to wear, it can still limit the excessive scattering of the conductive fiber 3, thereby ensuring normal conduction capability, and providing a certain deformation space for the contact end of the conductive fiber 3 and the motor shaft, thereby avoiding excessive wear during use and extending the service life.

[0039] Wherein, the conductive fiber 3 is in interference contact with the motor shaft surface;

[0040] The conductive fiber 3 is in interference contact with the motor shaft surface, which can ensure that it can always be in contact with the motor shaft surface during operation to achieve continuous conduction performance and avoid poor contact. The fixed plate 2 is in contact with the motor shaft surface, so that the fixed plate 2 and the conductive fiber 3 can simultaneously serve as the medium for conducting the motor shaft and the housing, which can be used to better release the shaft voltage.

[0041] The motor comprises a motor housing and a motor rotating part, wherein the motor rotating part is used to conduct electricity out of the ground. The motor is characterized in that it also comprises a device for preventing electric corrosion of the motor bearings as described in any of the above items, wherein the device for preventing electric corrosion of the motor bearings is located in the motor housing and is sleeved outside the motor rotating part, and the device for preventing electric corrosion of the motor bearings is used to electrically connect the motor rotating part and the motor housing.

[0042] When the present application is applied to a water-cooled motor, at low, medium and high speeds, the fixing plate 2 and the conductive fiber 3 are both the medium for conducting electricity between the motor shaft and the housing; and the fixing plate 2 supports the conductive fiber 3 to ensure the conductive ability of the conductive fiber 3 at low, medium and high speeds; after endurance, the fixing plate 2 becomes shorter due to wear, and the medium for conductive ability is mainly the conductive fiber 3, and the fixing plate 2 serves to limit the scattering of the conductive fiber 3.

[0043] When the present application is applied to an oil-cooled motor, at low speed, the stator 2 and the conductive fiber 3 become the main conductive medium at the same time; at medium and high speeds, the stator 2 will be held up by the oil film on the main shaft, and the conductive medium will gradually change from the stator 2 and the conductive fiber 3 to the conductive fiber 3, and the stator 2 plays a supporting role, pressing the conductive fiber 3 to achieve better conductive performance; after durability, at low speed, the stator 2 will still have a certain amount of contact and conduction ability, and can still work normally at low speed. At high speed, the conductive performance is equivalent to that before durability, and the main conductive medium is still the conductive fiber 3. The function of the stator 2 is to support the conductive fiber 3 so that the conductive fiber 3 has a better working state.

[0044] The working principle and use process of this utility model:

[0045] During assembly, the conductive fiber 3 can be wound around the intermediate shaft 101 for half a circle, and the fixing plate 2 is inserted to clamp the conductive fiber 3, and welding is performed at the welding positions 201 at both ends of the fixing plate 2 to combine the two sides of the fixing plate 2, and a tubular channel is formed in the middle to fix the conductive fiber 3, thereby forming a conductive component;

[0046] Then press the conductive component into the installation groove 5 to complete the assembly work. The entire assembly process is relatively simple. The conductive fiber 3 can be restricted by the set fixing plate 2 so that it can be firmly installed and prevented from flying during use. It supports and presses the conductive fiber 3 to achieve better conductive performance and avoid poor contact.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] 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. Device to prevent electrical corrosion of motor bearings, Features ,include: A metal bracket, the metal bracket is in an annular shape as a whole, and is provided with at least one mounting groove, wherein the opening direction of the mounting groove is toward the center of the metal bracket; A conducting component, the conducting component is composed of a fixed shaft and a fixed sheet; Conductive fibers are fixed in a conductive component, and the conductive component is accommodated in the mounting groove and extends from the center of the metal bracket.

2. The device for preventing electric corrosion of motor bearings according to claim 1, Features: The fixed shaft includes an intermediate shaft and two anti-detachment covers, the intermediate shaft and the two anti-detachment covers are formed at one time, the two anti-detachment covers are respectively arranged at the top and bottom of the intermediate shaft, the conductive fiber wraps around the intermediate shaft, and the fixed sheet is clamped and arranged outside the conductive fiber.

3. The device for preventing electric corrosion of motor bearings according to claim 1, Features: The metal bracket is made of conductive material.

4. The device for preventing electric corrosion of motor bearings according to claim 1, Features: Both sides of the fixing plate are provided with welding positions for welding, so that the two sides of the fixing plate are combined, and a tubular channel is formed in the middle for clamping and fixing the conductive fiber.

5. The device for preventing electric corrosion of motor bearings according to claim 1, Features: The inner ends of the two sides of the fixing plate are opened outwards to form a V shape.

6. A motor, comprising a motor housing and a motor rotating part, wherein the motor rotating part is used to conduct electricity to ground, It is characterized in that It also includes a device for preventing electric corrosion of motor bearings as described in any one of claims 1 to 5, wherein the device for preventing electric corrosion of motor bearings is located in the motor housing and is sleeved outside the motor rotating part, and the device for preventing electric corrosion of motor bearings is used to electrically connect the motor rotating part and the motor housing.

Images