Self-lubricating low-friction explosion-proof motor bearing structure

Abstract

The utility model relates to motor bearing structure technical field especially is a kind of self-lubricating low-friction explosion-proof motor bearing structure, including output shaft subassembly and motor end shell subassembly, oil feeding subassembly is fixedly connected in motor end shell subassembly inside, motor end shell subassembly is rotatably connected in the inside of output shaft subassembly, output shaft subassembly includes output shaft body, double-slope plate is fixedly connected with the outside of output shaft body, oil baffle is fixedly connected with the outside of output shaft body, bearing body is fixedly connected with the outside between output shaft body close double-slope plate, motor end shell subassembly includes motor end cover, annular installation slot is arranged in the inside of motor end cover, oil guide is arranged in the inside of motor end cover close oil feeding subassembly, in the utility model, device can realize the sustained lubrication of non-sealed bearing between the front end cover of motor and the output shaft of motor, effectively solve the problem that lubricating oil flows out from bearing and needs to be frequently replenished.

Description

Technical Field

[0001] This utility model relates to the technical field of electric motor bearing structure, specifically a self-lubricating, low-friction, explosion-proof electric motor bearing structure. Background Technology

[0002] Electric motor bearings are key components that support the motor spindle and ensure its smooth rotation. In the structure of an electric motor, bearings are usually installed inside the front and rear covers. The main function of these bearings is to bear the radial load and part of the axial load generated during the operation of the electric motor. The installation accuracy of the front bearing has a crucial impact on the smooth operation and overall lifespan of the electric motor. The bearing inside the front cover of the electric motor needs to be filled with lubricating oil. The lubricating oil forms an oil film between the rolling elements and raceways of the bearing, avoiding direct metal-to-metal contact, thereby reducing friction and wear. This oil film can effectively distribute the load, delay fatigue damage on the material surface, and extend the service life of the bearing. For the bearing installed between the front cover of the motor and the output shaft of the motor, sealed bearings cannot be used due to special reasons. Because of their sealing structure, sealed bearings have relatively poor heat dissipation performance, which can easily lead to overheating and affect the service life and performance of the bearing. Therefore, when lubricating the bearing, the lubricating oil will flow out of the bearing, which requires continuous replenishment of lubricating oil inside the bearing. Since the lubricating oil will flow out of the bearing, it is necessary to replenish the lubricating oil regularly, which increases the frequency and cost of maintenance. Therefore, a self-lubricating, low-friction, explosion-proof motor bearing structure is proposed to address the above problems. Utility Model Content

[0003] The purpose of this utility model is to provide a self-lubricating, low-friction, explosion-proof motor bearing structure to solve the problem that for bearings installed between the front cover of the motor and the output shaft of the motor, lubricating oil will flow out of the bearing, requiring regular replenishment of lubricating oil, which increases the frequency of maintenance and cost.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A self-lubricating, low-friction, explosion-proof motor bearing structure includes an output shaft assembly and a motor end housing assembly. An oil supply assembly is fixedly connected to the inner side of the motor end housing assembly, which is rotatably connected to the inner side of the output shaft assembly. The output shaft assembly includes an output shaft body, with a double-slope plate fixedly connected to its outer side and an oil baffle plate fixedly connected thereto. A bearing body is fixedly connected to the outer side of the output shaft body near the double-slope plate. The motor end housing assembly includes a motor end cover, with an annular mounting groove on its inner side and an oil guide channel on its inner side near the oil supply assembly. An annular tube is fixedly connected to the inner side of the annular mounting groove on the motor end cover. The system includes an oil spray mounting plate with a zigzag channel on its inner side near the annular mounting groove. A first spring-loaded one-way valve is fixedly connected to the inner side of the zigzag channel. The oil delivery assembly includes a door panel with a guide post slidably connected to its inner side. A triangular plate is fixedly connected to the side of the guide post near the output shaft body. An inner hollow plate is fixedly connected to the end of the guide post away from the triangular plate. A rubber ring is fixedly connected to the outer side of the inner hollow plate. A second spring-loaded one-way valve is fixedly connected to the inner side of the inner hollow plate. A linear spring is fixedly connected to the top of the inner hollow plate. The bottom end of the door panel is fixedly connected to the inner side of the motor end cover. The upper end of the triangular plate is fitted against the outer side of the double-slope plate. The outer side of the bearing body is fixedly connected to the inner side of the front end of the motor end cover.

[0005] As a further optimization of this utility model, the output shaft body is embedded and installed inside the motor end cover, the double slope plate is in the shape of an equilateral triangle, the number of double slope plates is two sets, and the number of double slope plates in each set is multiple.

[0006] As a further optimization of this utility model, the top of the linear spring is fixedly connected to the side of the door panel near the upper end, a straight hole is opened on the inner side of the door panel near the guide post, two guide posts are installed on the inner side of the door panel, and the triangular plate is in the shape of an equilateral triangle.

[0007] As a further optimization of this utility model, the oil baffle is in the shape of a hollow cylinder, there are two oil baffles, the oil baffles are located at the front end and rear end of the bearing body, the two oil baffles are located between two oil spray mounting plates, and there is a gap between the oil baffles and the oil spray mounting plates.

[0008] As a further optimization of this utility model, the inner side of the oil injection mounting plate is hollow, a gap is provided between the groove of the oil injection mounting plate and the outer side of the output shaft body, the diameter of the groove of the oil injection mounting plate is smaller than the diameter of the oil baffle plate, and the number of oil delivery components is two, with the two oil delivery components located between the two oil baffle plates.

[0009] As a further optimization of this utility model, the following features are provided: the annular mounting groove is circular in shape and is connected to the oil guide channel; a through hole is provided on the inner side of the annular tube near the folded channel; the inner side of the annular tube is hollow; the inner side of the annular tube, the oil guide channel, and the folded channel are connected; the folded channel passes through the rear end of the oil injection mounting plate; and the center of the first spring-type one-way valve is aligned with the front and rear balls of the bearing body.

[0010] As a further optimization of this utility model, the oil guide channel penetrates the inner side of the motor end cover, the upper end of the oil guide channel is cylindrical, the inner hollow plate is hollow cylindrical, the inner hollow plate is embedded in the inner side of the upper end of the oil guide channel, and the outer side of the rubber ring is in contact with the inner side of the oil guide channel opened in the motor end cover.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, by setting up an output shaft assembly, a motor end housing assembly, and an oil supply assembly, the device can achieve continuous lubrication of the non-sealed bearing installed between the front end cover of the motor and the output shaft of the motor. This effectively solves the problem of frequent lubrication replenishment caused by lubricating oil flowing out of the bearing, thereby greatly reducing maintenance frequency and cost. It avoids the inconvenience and extra expenses caused by frequent lubricating oil leakage and the need for constant replenishment, improves the operating efficiency and reliability of the motor, and extends the overall service life of the motor. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the motor end cover of this utility model; Figure 3 This is a cross-sectional structural diagram of the output shaft body of this utility model; Figure 4 This utility model Figure 3 A schematic diagram of the structure at point A; Figure 5 This utility model Figure 3 A schematic diagram of the structure at point B; Figure 6 This is a cross-sectional structural diagram of the bearing body of this utility model; Figure 7 This utility model Figure 6 A schematic diagram of the structure at point C; Figure 8 This is a schematic diagram of the annular mounting groove structure of this utility model; Figure 9 This utility model Figure 8 A schematic diagram of the structure at point D.

[0013] In the diagram: 1. Output shaft assembly; 11. Output shaft body; 12. Double-slope plate; 13. Oil baffle plate; 14. Bearing body; 2. Motor end housing assembly; 21. Motor end cover; 22. Annular mounting groove; 23. Oil guide channel; 24. Annular pipe; 25. Oil injection mounting plate; 26. Bending channel; 27. First spring-loaded check valve; 3. Oil delivery assembly; 31. Door panel; 32. Guide column; 33. Triangular plate; 34. Linear spring; 35. Inner hollow plate; 36. Rubber ring; 37. Second spring-loaded check valve. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0016] Please see Figure 1-9 This utility model provides a technical solution: The self-lubricating, low-friction, explosion-proof motor bearing structure includes an output shaft assembly 1 and a motor end housing assembly 2. An oil supply assembly 3 is fixedly connected to the inner side of the motor end housing assembly 2. The motor end housing assembly 2 is rotatably connected to the inner side of the output shaft assembly 1. The output shaft assembly 1 includes an output shaft body 11, a double-slope plate 12 fixedly connected to the outer side of the output shaft body 11, an oil baffle plate 13 fixedly connected to the outer side of the output shaft body 11, and a bearing body 14 fixedly connected to the outer side of the output shaft body 11 near the double-slope plate 12. The motor end housing assembly 2 includes a motor end cover 21, an annular mounting groove 22 on the inner side of the motor end cover 21, an oil guide channel 23 on the inner side of the motor end cover 21 near the oil supply assembly 3, an annular pipe 24 fixedly connected to the inner side of the annular mounting groove 22 of the motor end cover 21, and an oil spraying assembly fixedly connected to the inner side of the motor end cover 21. Plate 25, the oil injection mounting plate 25 has a folded channel 26 on the inner side near the annular mounting groove 22. A first spring-type one-way valve 27 is fixedly connected to the inner side of the folded channel 26 on the oil injection mounting plate 25. The oil supply assembly 3 includes a door plate 31. A guide post 32 is slidably connected to the inner side of the door plate 31. A triangular plate 33 is fixedly connected to the side of the guide post 32 near the output shaft body 11. An inner hollow plate 35 is fixedly connected to the end of the guide post 32 away from the triangular plate 33. A rubber ring 36 is fixedly connected to the outer side of the inner hollow plate 35. A second spring-type one-way valve 37 is fixedly connected to the inner side of the inner hollow plate 35. A linear spring 34 is fixedly connected to the top of the inner hollow plate 35. The bottom end of the door plate 31 is fixedly connected to the inner side of the motor end cover 21. The upper end of the triangular plate 33 is attached to the outer side of the double slope plate 12. The outer side of the bearing body 14 is fixedly connected to the inner side of the front end of the motor end cover 21.

[0017] As a further implementation of this solution, the output shaft body 11 is embedded in the inner side of the motor end cover 21. The double slope plate 12 is equilateral triangular in shape. There are two sets of double slope plates 12, and each set of double slope plates 12 contains multiple plates. The top of the linear spring 34 is fixedly connected to the side of the door panel 31 near the upper end. A straight hole is opened on the inner side of the door panel 31 near the guide post 32. Two guide posts 32 are installed on the inner side of the door panel 31. The triangular plate 33 is equilateral triangular in shape. With the above settings, when the output shaft body 11 drives the double slope plate 12 to rotate, it will continuously squeeze the triangular plate 33. At the same time, under the action of the elastic force of the linear spring 34, the inner hollow plate 35 can be moved up and down repeatedly. As a further implementation of this solution, the oil baffle 13 is a hollow cylinder, and there are two oil baffles 13. The oil baffles 13 are located at the front and rear ends of the bearing body 14, and the two oil baffles 13 are located between the two oil spray mounting plates 25. There is a gap between the oil baffles 13 and the oil spray mounting plates 25. The inner side of the oil spray mounting plates 25 is hollow, and there is a gap between the groove of the oil spray mounting plates 25 and the outer side of the output shaft body 11. The diameter of the groove of the oil spray mounting plates 25 is smaller than the diameter of the oil baffles 13. There are two oil delivery components 3, and the two oil delivery components 3 are located between the two oil baffles 13. With the above arrangement, the outflowing lubricating oil can easily flow back to the two oil spray mounting plates 25. At the same time, the two oil baffles 13 and the two oil spray mounting plates 25 block the lubricating oil and prevent the lubricating oil from overflowing, thereby achieving the effect of lubricating oil recovery. As a further implementation of this solution, the annular mounting groove 22 is circular in shape and communicates with the oil guide channel 23. A through hole is provided on the inner side of the annular pipe 24 near the inner side of the folded channel 26. The inner side of the annular pipe 24 is hollow. The inner side of the annular pipe 24, the oil guide channel 23, and the folded channel 26 are connected. The folded channel 26 passes through the rear end of the fuel injection mounting plate 25. The center of the first spring-loaded check valve 27 is aligned with the bearing. The balls of body 14 are aligned front and back, and the oil guide channel 23 passes through the inner side of the motor end cover 21. The upper part of the oil guide channel 23 is cylindrical, and the inner hollow plate 35 is hollow cylindrical. The inner hollow plate 35 is embedded in the inner side of the upper part of the oil guide channel 23. The outer side of the rubber ring 36 is in contact with the inner side of the oil guide channel 23 opened in the motor end cover 21. Through the above arrangement, the lubricating oil can be continuously circulated and utilized, which greatly reduces the frequency of filling the device with lubricating oil and reduces maintenance costs.

[0018] Workflow: To achieve continuous lubrication of the bearing body 14 and reduce maintenance frequency and cost, during use, the foot of the motor end cover 21 faces downwards, and lubricating oil is filled into the two oil spray mounting plates 25, making the amount of lubricating oil level with the top of the door panel 31. When the motor is working, the output shaft body 11 rotates. The output shaft body 11 is rotatably connected to the inside of the motor end cover 21 through the bearing body 14. When the bearing body 14 rotates, lubricating oil flows out from inside the bearing body 14 and flows back between the two oil spray mounting plates 25. The two oil baffles 13 and the two oil spray mounting plates 25 fixed on the outside of the output shaft body 11 act as a barrier to block the lubricating oil. The fit between the outer diameter of the 3rd ring and the inner groove diameter of the oil spray mounting plate 25 prevents lubricating oil from flowing out between the oil spray mounting plate 25 and the oil baffle plate 13 due to splashing. Simultaneously, when the output shaft body 11 rotates, it drives the double-slope plate 12 to rotate. Based on the shapes of the double-slope plate 12 and the triangular plate 33, the rotation of the double-slope plate 12 presses the triangular plate 33 downwards. The triangular plate 33 drives the guide post 32 and the inner hollow plate 35 to move downwards. There are two guide posts 32 inside the door panel 31. These two guide posts 32 limit the movement of the triangular plate 33 and prevent it from twisting. When the inner hollow plate 35 moves downwards, it causes the linear spring 34 to deform. Ring 36 serves to seal the oil guide channel 23 between the inner hollow plate 35 and the motor end cover 21. When the inner hollow plate 35 moves the second spring-loaded check valve 37 downward, the second spring-loaded check valve 37 is closed under pressure. Through the inner hollow plate 35 and the second spring-loaded check valve 37, the lubricating oil inside the oil guide channel 23 can be pushed into the annular pipe 24, and then enters the zigzag channel 26 from the oil spray mounting plate 25. Under pressure, the first spring-loaded check valve 27 is opened, and the lubricating oil is sprayed from the zigzag channel 26 onto the balls of the bearing body 14, achieving the effect of lubricating the inside of the bearing body 14. When the double slope plate 12 moves away from the triangle After plate 33, under the elastic tension of linear spring 34, hollow plate 35 moves upward. Under the pressure inside oil guide channel 23, the second spring-type check valve 37 is in the open state, while the first spring-type check valve 27 is in the closed state. Since one end of the annular pipe 24 is a sealed structure, the lubricating oil inside the annular pipe 24 flows into the oil guide channel 23 very slowly, while the lubricating oil between the oil spray mounting plates 25 quickly soaks into the oil guide channel 23, circulating in sequence to achieve continuous lubrication of the bearing body 14. At the same time, this setting can achieve continuous circulation and utilization of lubricating oil, greatly reducing the frequency of filling the device with lubricating oil and reducing maintenance costs.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-lubricating low-friction explosion-proof motor bearing structure comprising an output shaft assembly (1) and a motor end shell assembly (2), characterized in that: An oil supply assembly (3) is fixedly connected to the inner side of the motor end housing assembly (2), and the motor end housing assembly (2) is rotatably connected to the inner side of the output shaft assembly (1). The output shaft assembly (1) includes an output shaft body (11), a double-slope plate (12) fixedly connected to the outside of the output shaft body (11), an oil baffle plate (13) fixedly connected to the outside of the output shaft body (11), and a bearing body (14) fixedly connected to the outside of the output shaft body (11) near the double-slope plate (12). The motor end housing assembly (2) includes a motor end cover (21), an annular mounting groove (22) is provided on the inner side of the motor end cover (21), an oil guide channel (23) is provided on the inner side of the motor end cover (21) near the oil supply assembly (3), an annular pipe (24) is fixedly connected to the inner side of the annular mounting groove (22) of the motor end cover (21), and an oil spray mounting plate (25) is fixedly connected to the inner side of the motor end cover (21). The mounting plate (25) has a zigzag channel (26) on the inner side near the annular mounting groove (22). A first spring-type check valve (27) is fixedly connected to the inner side of the zigzag channel (26) of the oil injection mounting plate (25). The oil delivery assembly (3) includes a door plate (31). A guide post (32) is slidably connected to the inner side of the door plate (31). A triangular plate (33) is fixedly connected to the side of the guide post (32) near the output shaft body (11). An inner hollow plate (35) is fixedly connected to the end of the guide post (32) away from the triangular plate (33). A rubber ring (36) is fixedly connected to the outer side of the inner hollow plate (35). A second spring-type check valve (37) is fixedly connected to the inner side of the inner hollow plate (35). A linear spring (34) is fixedly connected to the top of the inner hollow plate (35). The bottom end of the door panel (31) is fixedly connected to the inner side of the motor end cover (21), the upper end of the triangular plate (33) is attached to the outer side of the double slope plate (12), and the outer side of the bearing body (14) is fixedly connected to the inner side of the front end of the motor end cover (21).

2. The self-lubricating low-friction explosion-proof motor bearing structure according to claim 1, characterized in that: The output shaft body (11) is embedded in the inner side of the motor end cover (21). The double slope plate (12) is in the shape of an equilateral triangle. There are two sets of double slope plates (12), and each set of double slope plates (12) contains multiple plates.

3. The self-lubricating low friction explosion-proof motor bearing construction of claim 1, wherein: The top of the linear spring (34) is fixedly connected to the side of the door panel (31) near the upper end. The door panel (31) has a straight hole on the inner side near the guide post (32). Two guide posts (32) are installed on the inner side of the door panel (31). The triangular plate (33) is in the shape of an equilateral triangle.

4. The self-lubricating low friction explosion-proof motor bearing construction of claim 1, wherein: The oil baffle (13) is a hollow cylinder. There are two oil baffles (13). The oil baffles (13) are located at the front end and rear end of the bearing body (14). The two oil baffles (13) are located between two oil spray mounting plates (25). There is a gap between the oil baffles (13) and the oil spray mounting plates (25).

5. The self-lubricating low friction explosion-proof motor bearing construction of claim 1, wherein: The inner side of the oil injection mounting plate (25) is hollow. There is a gap between the groove of the oil injection mounting plate (25) and the outer side of the output shaft body (11). The diameter of the groove of the oil injection mounting plate (25) is smaller than the diameter of the oil baffle plate (13). There are two oil delivery components (3), and the two oil delivery components (3) are located between the two oil baffle plates (13).

6. The self-lubricating low friction explosion-proof motor bearing construction of claim 1, wherein: The annular mounting groove (22) is in the shape of a ring and is connected to the oil guide channel (23). The annular tube (24) has a through hole on the inner side near the folded channel (26). The annular tube (24) has a through hole on the inner side near the oil guide channel (23). The inner side of the annular tube (24) is hollow. The inner side of the annular tube (24), the oil guide channel (23) and the folded channel (26) are connected. The folded channel (26) passes through the rear end of the oil injection mounting plate (25). The center of the first spring-type one-way valve (27) is aligned with the front and rear of the ball bearing body (14).

7. The self-lubricating low friction explosion-proof motor bearing construction of claim 1, wherein: The oil guide channel (23) penetrates the inner side of the motor end cover (21). The upper part of the oil guide channel (23) is cylindrical. The inner hollow plate (35) is hollow cylindrical. The inner hollow plate (35) is embedded in the inner side of the upper part of the oil guide channel (23). The outer side of the rubber ring (36) is in contact with the inner side of the oil guide channel (23) opened in the motor end cover (21).

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