High efficiency rotor shaft with cavity structure

Abstract

The utility model belongs to rotor shaft technical field, concretely relates to a high -efficient rotor shaft with cavity structure, this high -efficient rotor shaft with cavity structure, including the axle body, the inside of axle body is provided with the grease storage hole, the inner wall of grease storage hole is fixedly connected with annular partition, the inner wall of annular partition is fixedly connected with the ring, the inner wall of ring is fixedly connected with the cross pipe, the surface of cross pipe is fixedly connected with the elastic sealing element, the left and right sides of cross pipe and the inner wall of grease storage hole are all fixedly connected with the sealing plate. This high -efficient rotor shaft with cavity structure sets up the grease storage hole in the axle body, makes this rotor shaft have the function of storage of the grease, simultaneously, when this rotor shaft rotates, through centrifugal force can make the grease in the grease storage hole can automatically enter the bearing through the grease outlet groove, further realizes the function of oil storage and automatic lubrication, reduces the arrangement of external lubrication pipeline, reduces the equipment internal space occupation.

Description

Technical Field

[0001] This utility model belongs to the field of rotor shaft technology, specifically relating to a high-efficiency rotor shaft with a cavity structure. Background Technology

[0002] The rotor shaft is a core component in transmission equipment (such as motors and reducers). Its main function is to transmit torque and support rotating parts such as bearings and impellers. During the long-term operation of the rotor shaft, the bearings, as easily worn parts, require continuous lubrication to reduce friction loss and extend their service life.

[0003] Traditional lubrication methods involve delivering grease or oil to the bearing via external lubrication lines, which then lubricates the bearing. However, external lubrication lines require separate installation, occupying internal space and have numerous connection points with the rotor shaft and bearings, making them prone to leakage or blockage due to vibration and aging. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency rotor shaft with a cavity structure. By optimizing the internal structure of the rotor shaft, it can achieve the functions of oil storage and automatic lubrication, reduce the layout of external lubrication pipelines, and reduce the internal space occupied by the equipment.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] A high-efficiency rotor shaft with a cavity structure includes a shaft body. The shaft body has a grease reservoir hole inside. An annular partition plate is fixedly connected to the inner wall of the grease reservoir hole. A circular ring is fixedly connected to the inner wall of the annular partition plate. A horizontal tube is fixedly connected to the inner wall of the circular ring. An elastic seal is fixedly connected to the surface of the horizontal tube. Sealing plates are fixedly connected to the left and right sides of the horizontal tube and the inner wall of the grease reservoir hole. A tapered cylinder is fixedly connected to the left and right sides of the annular partition plate and the inner wall of the grease reservoir hole. A bearing is provided on the surface of the shaft body. An annular baffle is fitted to the left and right sides of the bearing. A grease outlet groove is provided on the side of the annular baffle. A grease outlet hole is provided on the surface of the shaft body. First through holes are provided on the upper and lower sides of the shaft body. Second through holes are provided on the upper and lower sides of the horizontal tube. Internally threaded tubes are fixedly connected to the inner walls of the first and second through holes. A sealing plug is threaded onto the inner wall of the internally threaded tube. A first grease inlet hole is provided on the left side of the internally threaded tube. A second grease inlet hole is provided on the surface of the horizontal tube.

[0007] The present invention is further configured such that the elastic sealing element includes a connecting ring, a spring, a cylinder, and a grease inlet groove. The left and right ends of the spring are fixedly connected to the side of the connecting ring and the side of the cylinder, respectively. The inner wall of the connecting ring is fixedly connected to the surface of the horizontal tube. The inner wall of the cylinder is slidably connected to the surface of the horizontal tube. The surface of the cylinder is slidably connected to the inner wall of the annular partition plate. The grease inlet groove is provided on the side of the cylinder and is aligned with the second grease inlet hole.

[0008] The present invention is further configured such that the axis of the horizontal tube coincides with the axis of the shaft, and the first grease inlet is located inside the horizontal tube.

[0009] The present invention is further configured such that the grease outlet is located inside the bearing and the grease outlet is aligned with the grease groove.

[0010] The present invention is further configured such that a partition ring is fitted to the inner wall of the internally threaded tube, a cylindrical filter screen is fixedly connected to the inner wall of the partition ring, and threaded rings are fitted to both the upper and lower sides of the cylindrical filter screen, with the surface of the threaded rings threadedly connected to the inner wall of the internally threaded tube.

[0011] The present invention is further configured such that a horizontal column is fixedly connected to the inner wall of the threaded ring, and the center of the horizontal column coincides with the center of the threaded ring.

[0012] The technical effects achieved by this utility model are as follows:

[0013] The high-efficiency rotor shaft with a cavity structure of this utility model has a grease storage hole in the shaft body, which enables the rotor shaft to store grease. At the same time, when the rotor shaft rotates, the centrifugal force can cause the grease in the grease storage hole to automatically enter the bearing through the grease outlet groove, thereby realizing the functions of oil storage and automatic lubrication, reducing the layout of external lubrication pipelines and reducing the internal space occupation of the equipment.

[0014] The high-efficiency rotor shaft with a cavity structure of this utility model can fix a cylindrical filter screen inside the internal threaded tube through the cooperation of the internal threaded tube and the threaded ring. At the same time, after the cylindrical filter screen is fixed inside the internal threaded tube, the grease entering the grease reservoir can be filtered through the cylindrical filter screen, thereby preventing impurities in the grease from entering the bearing and causing accelerated bearing wear. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 yes Figure 1 Enlarged view at point B in the middle;

[0018] Figure 4 This is a top view of the central axis of this utility model;

[0019] Figure 5 This is a front view of the central axis of this utility model;

[0020] Figure 6 This is a side view of the central axis of this utility model;

[0021] Figure 7 This is a front view of the annular partition plate and the conical cylinder in this utility model;

[0022] Figure 8 This is a side view of the annular partition plate, the circular ring, and the conical cylinder in this utility model;

[0023] Figure 9 This is a top view of the horizontal tube in this utility model;

[0024] Figure 10 This is a front view of the horizontal tube in this utility model;

[0025] Figure 11 This is a front view of the elastic seal in this utility model;

[0026] Figure 12 This is a side view of the cylinder in this utility model;

[0027] Figure 13 This is a side view of the annular baffle in this utility model;

[0028] Figure 14 This is a left view of the internally threaded tube in this utility model;

[0029] Figure 15 yes Figure 14 Sectional view at CC;

[0030] Figure 16 This is a front view of the cylindrical filter screen in this utility model;

[0031] Figure 17 This is a top view of the threaded ring in this utility model.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Shaft; 2. Grease reservoir; 3. Annular partition plate; 4. Ring; 5. Horizontal tube; 6. Elastic seal; 61. Connecting ring; 62. Spring; 63. Cylinder; 64. Grease inlet groove; 7. Sealing plate; 8. Conical cylinder; 9. Bearing; 10. Annular baffle; 11. Grease outlet groove; 12. Grease outlet hole; 13. First through hole; 14. Second through hole; 15. Internally threaded tube; 16. Sealing plug; 17. First grease inlet hole; 18. Second grease inlet hole; 19. Partition ring; 20. Cylindrical filter screen; 21. Threaded ring; 22. Horizontal column. Detailed Implementation

[0034] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] like Figures 1 to 13 As shown, a high-efficiency rotor shaft with a cavity structure includes a shaft body 1. A grease reservoir 2 is provided inside the shaft body 1. An annular partition plate 3 is fixedly connected to the inner wall of the grease reservoir 2. A circular ring 4 is fixedly connected to the inner wall of the annular partition plate 3. A horizontal tube 5 is fixedly connected to the inner wall of the circular ring 4. An elastic seal 6 is fixedly connected to the surface of the horizontal tube 5. Sealing plates 7 are fixedly connected to the left and right sides of the horizontal tube 5 and the inner wall of the grease reservoir 2. A tapered cylinder 8 is fixedly connected to the left and right sides of the annular partition plate 3 and the inner wall of the grease reservoir 2. A bearing 9 is provided on the surface of the shaft body 1. 9 has annular baffles 10 attached to both sides. The sides of the annular baffles 10 have grease grooves 11. The surface of the shaft 1 has grease holes 12. The upper and lower sides of the shaft 1 have first through holes 13. The upper and lower sides of the horizontal tube 5 have second through holes 14. The inner walls of the first through holes 13 and the inner walls of the second through holes 14 are fixedly connected to internal threaded tubes 15. The inner walls of the internal threaded tubes 15 are threaded with sealing plugs 16. The left side of the internal threaded tubes 15 has a first grease inlet hole 17. The surface of the horizontal tube 5 has a second grease inlet hole 18.

[0037] The elastic seal 6 includes a connecting ring 61, a spring 62, a cylinder 63, and a grease inlet groove 64. The left and right ends of the spring 62 are fixedly connected to the side of the connecting ring 61 and the side of the cylinder 63, respectively. The inner wall of the connecting ring 61 is fixedly connected to the surface of the horizontal tube 5. The inner wall of the cylinder 63 is slidably connected to the surface of the horizontal tube 5. The surface of the cylinder 63 is slidably connected to the inner wall of the annular partition plate 3. The grease inlet groove 64 is opened on the side of the cylinder 63 and is aligned with the second grease inlet hole 18.

[0038] The axis of the horizontal tube 5 coincides with the axis of the shaft 1. The first grease inlet 17 is located inside the horizontal tube 5, and the grease outlet 12 is located inside the bearing 9. The grease outlet 12 is aligned with the grease outlet groove 11.

[0039] It should be noted that the grease storage hole 2 is divided into left and right parts by the annular partition plate 3, and the two ends of the horizontal tube 5 are sealed by the sealing plate 7. When the rotor shaft rotates, the grease in the grease storage hole 2 is allowed to enter the bearing 9 through the grease outlet hole 12 and grease outlet groove 11 under the action of centrifugal force through the inclined inner wall of the conical cylinder 8. After the grease enters the bearing 9, it can lubricate the bearing 9.

[0040] The internally threaded tube 15 can be sealed by the sealing plug 16. When the sealing plug 16 is separated from the internally threaded tube 15, the grease can enter the horizontal tube 5 through the internally threaded tube 15 and the first grease inlet hole 17 in sequence. When the horizontal tube 5 is full of grease and the thrust of the grease on the grease inlet groove 64 is greater than the elastic force of the spring 62, the grease inlet groove 64 can automatically separate from the annular partition plate 3, and the grease can enter the grease reservoir 2 through the second grease inlet hole 18 and the grease inlet groove 64 in sequence. When the injection of lubricant into the horizontal tube 5 stops, the grease inlet groove 64 can be moved into the annular partition plate 3 by the thrust of the spring 62 on the cylinder 63. At this time, the grease in the grease reservoir 2 can not flow back into the horizontal tube 5.

[0041] like Figures 1 to 17 As shown, a partition ring 19 is fitted to the inner wall of the internally threaded tube 15, and a cylindrical filter screen 20 is fixedly connected to the inner wall of the partition ring 19. Threaded rings 21 are fitted to both the upper and lower sides of the cylindrical filter screen 20, and the surface of the threaded rings 21 is threadedly connected to the inner wall of the internally threaded tube 15.

[0042] Among them, a horizontal column 22 is fixedly connected to the inner wall of the threaded ring 21, and the center of the horizontal column 22 coincides with the center of the threaded ring 21.

[0043] It should be noted that the cylindrical filter screen 20 can be fixed inside the internal threaded tube 15 by the cooperation of the internal threaded tube 15 and the threaded ring 21. After the cylindrical filter screen 20 is fixed inside the internal threaded tube 15, a certain gap is made between the cylindrical filter screen 20 and the internal threaded tube 15 by the partition ring 19. At this time, the grease entering the grease reservoir 2 can be filtered by the cylindrical filter screen 20, thereby preventing impurities in the grease from entering the bearing 9 and causing the bearing 9 to wear more rapidly. The cylindrical filter screen 20 is a stainless steel filter screen with a mesh size of 100. The horizontal post 22 inside the threaded ring 21 makes it more convenient for the user to rotate the threaded ring 21.

[0044] The working principle of this utility model is as follows: First, the sealing plug 16 is unscrewed from the internal threaded tube 15. Then, grease is injected into the horizontal tube 5 through the internal threaded tube 15. At this time, the grease entering the horizontal tube 5 is filtered through the cylindrical filter screen 20. The filtered grease enters the horizontal tube 5 through the first grease inlet hole 17. When the horizontal tube 5 is full of grease and the thrust of the grease on the grease inlet groove 64 is greater than the elastic force of the spring 62, the grease inlet groove 64 can automatically separate from the annular partition plate 3. The grease is then introduced into the grease reservoir 2 through the second grease inlet 18 and the grease inlet groove 64. When the grease in the grease reservoir 2 reaches the specified amount, the injection of grease into the horizontal tube 5 is stopped. At this time, the grease inlet groove 64 can be moved into the annular partition plate 3 by the pushing force of the spring 62 on the cylinder 63, and the grease in the grease reservoir 2 cannot flow back into the horizontal tube 5. Then, the sealing plug 16 is screwed into the internal threaded tube 15. At this time, the internal threaded tube 15 is sealed by the sealing plug 16.

[0045] When the rotor shaft rotates, the grease in the grease reservoir 2 is driven by the centrifugal force through the inclined inner wall of the conical cylinder 8 and enters the bearing 9 through the grease outlet 12 and the grease outlet groove 11. Once the grease enters the bearing 9, it can lubricate the bearing 9.

[0046] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A high-efficiency rotor shaft with a cavity structure, characterized in that: The device includes a shaft (1), which has a grease reservoir (2) inside. An annular partition plate (3) is fixedly connected to the inner wall of the grease reservoir (2). A circular ring (4) is fixedly connected to the inner wall of the annular partition plate (3). A horizontal tube (5) is fixedly connected to the inner wall of the circular ring (4). An elastic seal (6) is fixedly connected to the surface of the horizontal tube (5). Sealing plates (7) are fixedly connected to the left and right sides of the horizontal tube (5) and the inner wall of the grease reservoir (2). A conical cylinder (8) is fixedly connected to the left and right sides of the annular partition plate (3) and the inner wall of the grease reservoir (2). A bearing (9) is provided on the surface of the shaft (1). The bearing (9) has a bearing on its left and right sides. An annular baffle (10) is fitted on both sides. A grease outlet groove (11) is opened on the side of the annular baffle (10). A grease outlet hole (12) is opened on the surface of the shaft (1). A first through hole (13) is opened on both the upper and lower sides of the shaft (1). A second through hole (14) is opened on both the upper and lower sides of the horizontal tube (5). An internal threaded tube (15) is fixedly connected to the inner wall of the first through hole (13) and the inner wall of the second through hole (14). A sealing plug (16) is threadedly connected to the inner wall of the internal threaded tube (15). A first grease inlet hole (17) is opened on the left side of the internal threaded tube (15). A second grease inlet hole (18) is opened on the surface of the horizontal tube (5).

2. The high-efficiency rotor shaft with a cavity structure according to claim 1, characterized in that: The elastic seal (6) includes a connecting ring (61), a spring (62), a cylinder (63), and a grease inlet groove (64). The left and right ends of the spring (62) are fixedly connected to the side of the connecting ring (61) and the side of the cylinder (63), respectively. The inner wall of the connecting ring (61) is fixedly connected to the surface of the horizontal tube (5). The inner wall of the cylinder (63) is slidably connected to the surface of the horizontal tube (5). The surface of the cylinder (63) is slidably connected to the inner wall of the annular partition plate (3). The grease inlet groove (64) is opened on the side of the cylinder (63) and is aligned with the second grease inlet hole (18).

3. The high-efficiency rotor shaft with a cavity structure according to claim 1, characterized in that: The axis of the horizontal tube (5) coincides with the axis of the shaft (1), and the first grease inlet (17) is located inside the horizontal tube (5).

4. The high-efficiency rotor shaft with a cavity structure according to claim 1, characterized in that: The grease outlet (12) is located inside the bearing (9), and the grease outlet (12) is aligned with the grease groove (11).

5. The high-efficiency rotor shaft with a cavity structure according to claim 1, characterized in that: The inner wall of the internally threaded tube (15) is fitted with a partition ring (19), and a cylindrical filter screen (20) is fixedly connected to the inner wall of the partition ring (19). Threaded rings (21) are fitted on both the upper and lower sides of the cylindrical filter screen (20), and the surface of the threaded rings (21) is threadedly connected to the inner wall of the internally threaded tube (15).

6. The high-efficiency rotor shaft with a cavity structure according to claim 5, characterized in that: A horizontal column (22) is fixedly connected to the inner wall of the threaded ring (21), and the center of the horizontal column (22) coincides with the center of the threaded ring (21).

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