A traction motor bearing lubrication device

Abstract

The present invention discloses an oil lubrication device for a traction motor bearing, which solves the technical problems in the prior art that the lubricating oil is easily splashed and lost in the gearbox and also pollutes the surrounding environment. The present invention includes an oil collecting box provided on the bearing cover for collecting the lubricating oil splashed out with the gears. An oil inlet hole communicating the bearing and the oil collecting box is opened on the bearing cover, and the lubricating oil in the oil collecting box is injected into the bearing through the oil inlet hole. The structure of the present invention is simple, scientifically reasonable in design, convenient to use, easy to manufacture, and low in cost. It is welded by austenitic stainless steel plates. It can not only collect the lubricating oil, but also effectively filter impurities such as sludge and iron filings in the lubricating oil, and finally play a role in lubricating the bearing. It can not only ensure the reliable operation of the motor bearing, but also effectively collect the splashed lubricating oil for repeated use to reduce the operation cost of the traction motor.

Description

Technical Field

[0001] The present invention belongs to the technical field of bearing lubrication, and particularly relates to a lubricating device for a traction motor bearing. Background Art

[0002] A traction motor refers to an electric motor that generates the traction power of a locomotive or a motor car. There are various types of traction motors, but they all have a characteristic corresponding to the relationship between the traction force and speed of the locomotive and the motor car, that is, the basic traction characteristic. They can not only represent the performance of the locomotive or the motor car, but also be converted into the relationship between the torque and speed of the traction motor through the relationship between the dynamic wheel diameter of the vehicle and the transmission ratio.

[0003] A traction motor is the main motor that drives the axle of the vehicle's driving wheels and is used for the acceleration and braking of the vehicle.

[0004] When the stator winding of the traction motor is connected to three-phase alternating current, a rotating magnetic field will be generated in the stator space. An induced electromotive force and an induced current will be generated in the rotor winding in the rotating magnetic field, so that the rotor will be acted on by an electromagnetic force and rotate.

[0005] There are many types of traction motors, such as DC traction motors, pulsating current traction motors, single-phase commutator traction motors, AC rotating induction (asynchronous) traction motors, AC synchronous traction motors, and linear traction motors.

[0006] A traction motor is one of the important components of an electric locomotive. It is installed on the bogie under the car body. Through the gears at the rotor shaft end of the traction motor meshing with the gears on the axle of the wheel set, when the electric locomotive is in the traction state, the traction motor converts electrical energy into mechanical energy, making the wheel set rotate and driving the locomotive to run.

[0007] A traction motor mainly consists of two parts: a stator and a rotor.

[0008] The stator further includes a stator core, a stator winding, and a frame. The stator core is laminated by silicon steel sheets and is used to place the stator winding to form the magnetic circuit of the motor; the stator winding is wound by copper wires to form the electrical circuit of the motor; the frame is generally made of cast iron or cast steel and is the support of the motor.

[0009] The rotor further includes a core and a rotating shaft. The rotor core is similar to the stator core and is also laminated by silicon steel sheets as part of the middle magnetic circuit of the motor. Slots are opened on the core for placing or casting windings, and it is installed on the rotating shaft and rotates with the rotating shaft during operation. The windings are divided into two types: cage type and wound type. The cage type rotor winding is composed of cast aluminum bars or copper bars, and the ends are short-circuited by short-circuit rings. The wound type rotor winding is similar to the stator winding. The rotating shaft is made of medium carbon steel and is supported by bearings at both ends to output torque.

[0010] To ensure the normal operation of the traction motor, there is an air gap between the stator and the rotor. The size of the air gap has a great impact on the performance of the motor. If the air gap is large, the magnetic resistance is large, the exciting current provided by the power supply is large, and the power factor of the motor operation is low. However, if the air gap is too small, it will make the assembly difficult and easily cause the stator and rotor cores to collide during operation.

[0011] The lubrication methods of the traction motor bearings are mainly divided into two types, one is grease lubrication and the other is oil lubrication. When the traditional oil lubrication method is used to lubricate the traction motor bearings, the lubricating oil is easily splashed and lost in the gearbox, and it also pollutes the surrounding environment.

[0012] Therefore, designing an oil lubrication device for the traction motor bearings to ensure the reliable operation of the motor bearings and at the same time collect the splashed lubricating oil for reuse to reduce the operation cost of the traction motor has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0013] The technical problem to be solved by the present invention is to provide an oil lubrication device for the traction motor bearings, which can not only ensure the reliable operation of the motor bearings, but also effectively collect the splashed lubricating oil for reuse to reduce the operation cost of the traction motor.

[0014] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0015] An oil lubrication device for the traction motor bearings includes an oil receiving box provided on the bearing cover for collecting the lubricating oil splashed out with the gears. An oil inlet hole communicating the bearing and the oil receiving box is provided on the bearing cover, and the lubricating oil in the oil receiving box is injected into the bearing through the oil inlet hole.

[0016] Further, the oil receiving box includes an arc-shaped top plate, a side plate connected to the top plate, and a bottom plate connected to the side plate. The top plate, the side plate, the bottom plate and the corresponding bearing cover jointly enclose an oil receiving box with an open top.

[0017] Further, the top plate, the side plate and the bottom plate are integrally formed structures and are respectively welded and fixed to the bearing cover.

[0018] Further, the top plate, the side plate and the bottom plate are all made of thin steel plates, and the thickness of the thin steel plates is 1-3 mm.

[0019] Further, the top plate, the side plate and the bottom plate are all made of austenitic stainless steel.

[0020] Further, an oil collecting port is formed between the top plate and the side plate, and the splashed lubricating oil enters the oil receiving box through the oil collecting port.

[0021] Further, a partition is provided on the bottom surface of the top plate, and the oil collecting port and the oil inlet hole are arranged on both sides of the partition.

[0022] Furthermore, an oil passage circulation gap is formed between the bottom of the partition plate and the top surface of the bottom plate, and the height of this gap is not less than half of the height of the partition plate.

[0023] Furthermore, the distance between the oil inlet hole and the top surface of the bottom plate is greater than the distance between the bottom of the partition plate and the top surface of the bottom plate, and the diameter of the oil inlet hole is 8 mm.

[0024] Furthermore, the distance between the partition plate and the side plate is greater than three times the distance between the partition plate and the bearing cover.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The structure of the present invention is simple, scientifically reasonable in design, convenient to use, easy to manufacture, low in cost, and is welded by austenitic stainless steel plates.

[0027] The present invention can not only collect lubricating oil, but also effectively filter impurities such as sludge and iron filings in the lubricating oil, and finally play the role of lubricating the bearing. It can not only ensure the reliable operation of the motor bearing, but also effectively collect the splashing lubricating oil for reuse to reduce the operation cost of the traction motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of the present invention.

[0029] Figure 2 is another structural diagram of the present invention.

[0030] Among them, the names corresponding to the reference numerals are:

[0031] 1 - oil receiving box, 2 - bearing cover, 3 - bearing, 4 - oil inlet hole, 5 - impurities such as iron filings and sludge, 11 - top plate, 12 - side plate, 13 - bottom plate, 14 - oil collecting port, 15 - partition plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1, as Figure 1 and 2As shown in the figure, a traction motor bearing oil lubrication device provided by this embodiment has a simple structure, is scientifically and reasonably designed, is convenient to use, easy to manufacture, has a low cost, and is welded from austenitic stainless steel plates. A traction motor bearing oil lubrication device provided by this embodiment includes an oil collecting box 1 provided on a bearing cover 2 for collecting lubricating oil splashed out by a gear. An oil inlet hole 4 communicating the bearing 3 and the oil collecting box 1 is opened on the bearing cover 2, and the lubricating oil in the oil collecting box 1 is injected into the bearing 3 through the oil inlet hole 4.

[0034] The traction motor bearing oil lubrication device of the present invention is mainly applicable to the splash oil lubrication system of the locomotive traction motor gearbox. The lubricating oil in the gearbox is splashed onto the upper part of the oil collecting box by the rotating gear, and then flows into the inner bottom through the middle gap of the oil collecting box. Impurities such as iron filings and sludge that enter the oil collecting box together with the lubricating oil have a higher specific gravity than the lubricating oil, and will sink to the bottom of the oil collecting box after splashing into the oil collecting box, so that the impurities in the lubricating oil can be effectively filtered out. As the lubricating oil gradually increases and rises to a certain height, the clean lubricating oil flows into the bearing through the oil inlet hole 4 with a diameter of 8 mm on the bearing cover 2 to lubricate the bearing.

[0035] The present invention can not only collect the lubricating oil, but also effectively filter impurities such as sludge and iron filings in the lubricating oil, and finally play a role in lubricating the bearing. It can not only ensure the reliable operation of the motor bearing, but also effectively collect the splashed lubricating oil for reuse to reduce the operation cost of the traction motor.

[0036] Example 2, as Figure 1 and 2 As shown in the figure, a traction motor bearing oil lubrication device provided by this embodiment includes an oil collecting box 1 provided on a bearing cover 2 for collecting lubricating oil splashed out by a gear. An oil inlet hole 4 communicating the bearing 3 and the oil collecting box 1 is opened on the bearing cover 2, and the lubricating oil in the oil collecting box 1 is injected into the bearing 3 through the oil inlet hole 4. The oil collecting box 1 includes an arc-shaped top plate 11, a side plate 12 connected to the top plate 11, and a bottom plate 13 connected to the side plate 12. The top plate 11, the side plate 12, the bottom plate 13 and the corresponding bearing cover 2 jointly enclose an oil collecting box 1 with an open top.

[0037] On the basis of Example 1, this Example 2 gives a preferred structure of the oil collecting box 1. The oil collecting box 1 includes an arc-shaped top plate 11, a side plate 12 connected to the top plate 11, and a bottom plate 13 connected to the side plate 12. The top plate 11, the side plate 12, the bottom plate 13 and the corresponding bearing cover 2 jointly enclose an oil collecting box 1 with an open top. Designed in this way, the oil collecting box 1 has a simple structure, is easy to manufacture, has a low production cost, and has strong practicability.

[0038] Example 3, as Figure 1 and 2As shown in the figure, an oil lubrication device for a traction motor bearing provided in this embodiment includes an oil collecting box 1 provided on a bearing cover 2 for collecting the lubricating oil splashed out by the gear. An oil inlet hole 4 communicating the bearing 3 and the oil collecting box 1 is opened on the bearing cover 2, and the lubricating oil in the oil collecting box 1 is injected into the bearing 3 through the oil inlet hole 4. The oil collecting box 1 includes an arc-shaped top plate 11, a side plate 12 connected to the top plate 11, and a bottom plate 13 connected to the side plate 12. The top plate 11, the side plate 12, the bottom plate 13 and the corresponding bearing cover 2 jointly enclose an oil collecting box 1 with an open top. The top plate 11, the side plate 12 and the bottom plate 13 are of an integrally formed structure and are respectively welded and fixed to the bearing cover 2.

[0039] On the basis of Embodiment 2, Embodiment 3 gives the preferred structures of the top plate 11, the side plate 12 and the bottom plate 13. The top plate 11, the side plate 12 and the bottom plate 13 are of an integrally formed structure and are respectively welded and fixed to the bearing cover 2. With such a design, the oil collecting box 1 has a simple structure, is easy to manufacture, has a low production cost, is firm and durable, and has strong practicability.

[0040] Embodiment 4, as Figure 1 and 2 As shown in the figure, an oil lubrication device for a traction motor bearing provided in this embodiment includes an oil collecting box 1 provided on a bearing cover 2 for collecting the lubricating oil splashed out by the gear. An oil inlet hole 4 communicating the bearing 3 and the oil collecting box 1 is opened on the bearing cover 2, and the lubricating oil in the oil collecting box 1 is injected into the bearing 3 through the oil inlet hole 4. The oil collecting box 1 includes an arc-shaped top plate 11, a side plate 12 connected to the top plate 11, and a bottom plate 13 connected to the side plate 12. The top plate 11, the side plate 12, the bottom plate 13 and the corresponding bearing cover 2 jointly enclose an oil collecting box 1 with an open top. The top plate 11, the side plate 12 and the bottom plate 13 are all made of thin steel plates, and the thickness of the thin steel plates is 1 - 3 mm.

[0041] On the basis of Embodiment 2, Embodiment 4 gives the preferred structures and materials of the top plate 11, the side plate 12 and the bottom plate 13. The top plate 11, the side plate 12 and the bottom plate 13 are all made of thin steel plates, and the thickness of the thin steel plates is 1 - 3 mm. With such a design, the oil collecting box 1 has a simple structure, is easy to manufacture, has a low production cost, is firm and durable, and has strong practicability.

[0042] Embodiment 5, as Figure 1 and 2As shown in the figure, an oil lubrication device for a traction motor bearing provided in this embodiment includes an oil collecting box 1 provided on a bearing cover 2 for collecting the lubricating oil splashed out by the gear. An oil inlet hole 4 communicating the bearing 3 and the oil collecting box 1 is provided on the bearing cover 2, and the lubricating oil in the oil collecting box 1 is injected into the bearing 3 through the oil inlet hole 4. The oil collecting box 1 includes an arc-shaped top plate 11, a side plate 12 connected to the top plate 11, and a bottom plate 13 connected to the side plate 12. The top plate 11, the side plate 12, the bottom plate 13 and the corresponding bearing cover 2 jointly enclose an oil collecting box 1 with an open top. The top plate 11, the side plate 12 and the bottom plate 13 are all made of austenitic stainless steel.

[0043] On the basis of Embodiment 2, Embodiment 5 gives the preferred structures and materials of the top plate 11, the side plate 12 and the bottom plate 13. The top plate 11, the side plate 12 and the bottom plate 13 are all made of austenitic stainless steel. With such a design, the oil collecting box 1 has a simple structure, is easy to manufacture, has a low production cost, is solid and durable, and has strong practicability. The top plate 11, the side plate 12 and the bottom plate 13 are all made of austenitic stainless steel, which has no magnetism itself and will not affect the operation of the traction motor.

[0044] Embodiment 6, as Figure 1 and 2 As shown in the figure, an oil lubrication device for a traction motor bearing provided in this embodiment includes an oil collecting box 1 provided on a bearing cover 2 for collecting the lubricating oil splashed out by the gear. An oil inlet hole 4 communicating the bearing 3 and the oil collecting box 1 is provided on the bearing cover 2, and the lubricating oil in the oil collecting box 1 is injected into the bearing 3 through the oil inlet hole 4. The oil collecting box 1 includes an arc-shaped top plate 11, a side plate 12 connected to the top plate 11, and a bottom plate 13 connected to the side plate 12. The top plate 11, the side plate 12, the bottom plate 13 and the corresponding bearing cover 2 jointly enclose an oil collecting box 1 with an open top. An oil collecting port 14 is formed between the top plate 11 and the side plate 12, and the splashed lubricating oil enters the oil collecting box 1 through the oil collecting port 14.

[0045] On the basis of Embodiment 2, Embodiment 6 gives the preferred structure between the top plate 11 and the side plate 12. An oil collecting port 14 is formed between the bottom of the top plate 11 and the top of the side plate 12, and the splashed lubricating oil enters the oil collecting box 1 through the oil collecting port 14. With such a design, the oil collecting box 1 has a simple structure, is easy to manufacture, has a low production cost, is solid and durable, and has strong practicability. By collecting oil through the oil collecting port 14, the oil collecting port 14 has a retracted opening. On the one hand, it can increase the oil collecting area, and on the other hand, it can ensure that the lubricating oil splashed into the oil collecting box 1 will not splash out, which is simple and practical.

[0046] Embodiment 7, as Figure 1 and 2As shown in the figure, an oil lubrication device for a traction motor bearing provided in this embodiment includes an oil collecting box 1 provided on a bearing cover 2 for collecting the lubricating oil splashed out by the gear. An oil inlet hole 4 communicating the bearing 3 and the oil collecting box 1 is provided on the bearing cover 2, and the lubricating oil in the oil collecting box 1 is injected into the bearing 3 through the oil inlet hole 4. The oil collecting box 1 includes an arc-shaped top plate 11, a side plate 12 connected to the top plate 11, and a bottom plate 13 connected to the side plate 12. The top plate 11, the side plate 12, the bottom plate 13 and the corresponding bearing cover 2 jointly enclose an oil collecting box 1 with an open top. An oil collecting port 14 is formed between the top plate 11 and the side plate 12, and the splashed lubricating oil enters the oil collecting box 1 through the oil collecting port 14. A partition plate 15 is provided on the bottom surface of the top plate 11, and the oil collecting port 14 and the oil inlet hole 4 are arranged on both sides of the partition plate 15.

[0047] On the basis of Embodiment 6, Embodiment 7 gives the preferred structure of the top plate 11. A partition plate 15 is provided on the bottom surface of the top plate 11, and the oil collecting port 14 and the oil inlet hole 4 are arranged on both sides of the partition plate 15. Designed in this way, it can effectively prevent the lubricating oil containing impurities collected from the oil collecting port 14 from directly flowing into the oil inlet hole, but after sinking to the bottom and then entering the bearing 3 through the oil inlet hole 4. In this way, sufficient time is given for impurities 5 such as iron filings and sludge in the lubricating oil to sink to the bottom, which can effectively ensure the precipitation and filtration of iron filings and sludge and other impurities 5 in the lubricating oil, and ensure the reliable lubrication operation of the motor bearing.

[0048] Embodiment 8, as Figure 1 and 2 As shown in the figure, an oil lubrication device for a traction motor bearing provided in this embodiment includes an oil collecting box 1 provided on a bearing cover 2 for collecting the lubricating oil splashed out by the gear. An oil inlet hole 4 communicating the bearing 3 and the oil collecting box 1 is provided on the bearing cover 2, and the lubricating oil in the oil collecting box 1 is injected into the bearing 3 through the oil inlet hole 4. The oil collecting box 1 includes an arc-shaped top plate 11, a side plate 12 connected to the top plate 11, and a bottom plate 13 connected to the side plate 12. The top plate 11, the side plate 12, the bottom plate 13 and the corresponding bearing cover 2 jointly enclose an oil collecting box 1 with an open top. An oil collecting port 14 is formed between the top plate 11 and the side plate 12, and the splashed lubricating oil enters the oil collecting box 1 through the oil collecting port 14. A partition plate 15 is provided on the bottom surface of the top plate 11, and the oil collecting port 14 and the oil inlet hole 4 are arranged on both sides of the partition plate 15. An oil flow-through gap is formed between the bottom of the partition plate 15 and the top surface of the bottom plate 13, and the height of this gap is not less than half of the height of the partition plate 15.

[0049] On the basis of Embodiment 7, Embodiment 8 gives the preferred structure of the partition plate 15. An oil passage circulation gap is formed between the bottom of the partition plate 15 and the top surface of the bottom plate 13, and the height of this gap is not less than half of the height of the partition plate 15. With such a design, it is ensured that impurities 5 such as iron filings and sludge in the lubricating oil have sufficient time to precipitate and sink to the bottom. At the same time, it can also ensure that the lubricating oil in the oil receiving box 1 can smoothly flow through the bottom of the partition plate 15 and enter the bearing 3 through the oil inlet hole 4. It can effectively prevent the lubricating oil containing impurities from directly flowing into the oil inlet hole and prevent excessive accumulation of impurities 5 such as iron filings and sludge from entering the bearing.

[0050] Embodiment 9, as Figure 1 and 2 shown, a traction motor bearing oil lubrication device provided in this embodiment includes an oil receiving box 1 provided on the bearing cover 2 for collecting the lubricating oil splashed out by the gear. An oil inlet hole 4 communicating the bearing 3 and the oil receiving box 1 is opened on the bearing cover 2, and the lubricating oil in the oil receiving box 1 is injected into the bearing 3 through the oil inlet hole 4. The oil receiving box 1 includes an arc-shaped top plate 11, a side plate 12 connected to the top plate 11, and a bottom plate 13 connected to the side plate 12. The top plate 11, the side plate 12, the bottom plate 13 and the corresponding bearing cover 2 jointly enclose an oil receiving box 1 with an open top. An oil collecting port 14 is formed between the top plate 11 and the side plate 12, and the splashed lubricating oil enters the oil receiving box 1 through the oil collecting port 14. A partition plate 15 is provided on the bottom surface of the top plate 11, and the oil collecting port 14 and the oil inlet hole 4 are arranged on both sides of the partition plate 15. The distance between the oil inlet hole 4 and the top surface of the bottom plate 13 is greater than the distance between the bottom of the partition plate 15 and the top surface of the bottom plate 13, and the diameter of the oil inlet hole 4 is 8 mm.

[0051] On the basis of Embodiment 7, Embodiment 9 gives the preferred structure between the oil inlet hole 4 and the bottom plate 13. The distance between the oil inlet hole 4 and the top surface of the bottom plate 13 is greater than the distance between the bottom of the partition plate 15 and the top surface of the bottom plate 13, and the diameter of the oil inlet hole 4 is 8 mm. With such a design, the oil inlet hole 4 is higher than the bottom of the partition plate 15, which can effectively prevent the lubricating oil containing impurities from directly flowing into the oil inlet hole and prevent excessive accumulation of impurities 5 such as iron filings and sludge from entering the bearing.

[0052] Embodiment 10, as Figure 1 and 2As shown in the figure, an oil lubrication device for a traction motor bearing provided in this embodiment includes an oil receiving box 1 provided on a bearing cover 2 for collecting the lubricating oil splashed out by the gear. An oil inlet hole 4 communicating the bearing 3 and the oil receiving box 1 is opened on the bearing cover 2, and the lubricating oil in the oil receiving box 1 is injected into the bearing 3 through the oil inlet hole 4. The oil receiving box 1 includes an arc-shaped top plate 11, a side plate 12 connected to the top plate 11, and a bottom plate 13 connected to the side plate 12. The top plate 11, the side plate 12, the bottom plate 13 and the corresponding bearing cover 2 jointly enclose an oil receiving box 1 with an open top. An oil collecting port 14 is formed between the top plate 11 and the side plate 12, and the splashed lubricating oil enters the oil receiving box 1 through the oil collecting port 14. The distance between the partition plate 15 and the side plate 12 is greater than three times the distance between the partition plate 15 and the bearing cover 2.

[0053] Based on Embodiment 6, this Embodiment 10 gives the preferred structures between the partition plate 15 and the side plate 12 and the bearing cover 2 respectively. The distance between the partition plate 15 and the side plate 12 is greater than three times the distance between the partition plate 15 and the bearing cover 2. With such a design, it can not only ensure that the impurities in the lubricating oil can be fully precipitated, but also ensure that the lubricating oil after sedimentation and impurity removal can quickly and smoothly enter the bearing 3 through the oil inlet hole 4.

[0054] In the present invention, the traction motor uses the oil lubrication method for the bearing. Through the device of the present invention, the lubricating oil can be collected and filtered, and the lubricating oil can flow into the bearing chamber, so as to achieve the purpose of lubricating the motor bearing. The present invention can not only collect the lubricating oil, but also effectively filter impurities such as sludge and iron filings in the lubricating oil 5, and finally play a role in lubricating the bearing to ensure the reliable operation of the bearing.

[0055] The structure of the present invention is simple, easy to manufacture, and has a low cost. It is welded by thin steel plates.

[0056] The main components of the present invention include an oil receiving box and a bearing cover. Among them, the oil receiving box is enclosed by a top plate, a partition plate, a side plate and a bearing cover.

[0057] The present invention is mainly applicable to the splash oil lubrication system of the locomotive traction motor gearbox. The lubricating oil in the gearbox is splashed onto the top and side of the top plate of the oil receiving box 1 by the rotating gear, and then flows into the bottom through the gap of the intermediate oil collecting port 14. Since impurities such as iron filings and sludge have a large specific gravity, they will sink to the bottom of the oil receiving box, which can effectively play a role in filtering impurities. As the lubricating oil gradually increases and rises to a certain height, it then flows into the bearing through the oil inlet hole with a diameter of 8 mm on the bearing cover 2. The function of the partition plate in the oil receiving box 1 is to prevent the lubricating oil containing impurities from directly flowing into the oil inlet hole. The oil inlet hole on the bearing cover 2 is designed at a suitable position, which is not lower than the bottom of the partition plate, which can effectively prevent excessive accumulation of iron filings, sludge and other impurities from entering the bearing.

[0058] Finally, it should be noted that the above embodiments are only preferred embodiments of the present invention to illustrate the technical solutions of the present invention, rather than limiting it, and certainly not limiting the patent scope of the present invention; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention; that is to say, any meaningless changes or polishings made in the main design concept and spirit of the present invention, as long as the technical problems solved are still consistent with the present invention, should be included in the protection scope of the present invention; in addition, directly or indirectly applying the technical solutions of the present invention to other related technical fields shall similarly be included in the patent protection scope of the present invention.

Claims

1. An oil lubrication device for a traction motor bearing, characterized in that, It includes an oil receiving box (1) provided on a bearing cover (2) for collecting the lubricating oil splashed out by the gear. An oil inlet hole (4) communicating the bearing (3) and the oil receiving box (1) is formed on the bearing cover (2). The lubricating oil in the oil receiving box (1) is injected into the bearing (3) through the oil inlet hole (4). The oil receiving box (1) includes an arc-shaped top plate (11), a side plate (12) connected to the top plate (11), and a bottom plate (13) connected to the side plate (12). The top plate (11), the side plate (12), the bottom plate (13) and the corresponding bearing cover (2) jointly enclose an oil receiving box (1) with an open top. An oil collecting port (14) is formed between the top plate (11) and the side plate (12). The splashed lubricating oil enters the oil receiving box (1) through the oil collecting port (14). A partition plate (15) is provided on the bottom surface of the top plate (11). The oil collecting port (14) and the oil inlet hole (4) are arranged on both sides of the partition plate (15). An oil passage flow gap is formed between the bottom of the partition plate (15) and the top surface of the bottom plate (13), and the height of this gap is not less than half of the height of the partition plate (15). The distance between the oil inlet hole (4) and the top surface of the bottom plate (13) is greater than the distance between the bottom of the partition plate (15) and the top surface of the bottom plate (13). The distance between the partition plate (15) and the side plate (12) is greater than three times the distance between the partition plate (15) and the bearing cover (2).

2. The oil lubrication device for a traction motor bearing according to claim 1, wherein The top plate (11), the side plate (12) and the bottom plate (13) are of an integrally formed structure and are respectively welded and fixed to the bearing cover (2).

3. The oil lubrication device for a traction motor bearing according to claim 1, characterized in that The top plate (11), the side plate (12) and the bottom plate (13) are all made of thin steel plates, and the thickness of the thin steel plates is 1 - 3 mm.

4. The oil lubrication device for a traction motor bearing according to claim 1, characterized in that, The top plate (11), the side plate (12) and the bottom plate (13) are all made of austenitic stainless steel.

5. A bearing oil lubrication device for a traction motor according to claim 1, characterized in that, The diameter of the oil inlet hole (4) is 8 mm.

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