Improved motor bearing sealing structure

Abstract

The utility model relates to the technical field of motors, and discloses an improved motor bearing sealing structure which comprises a shaft, a sealing mechanism is arranged on the surface of the shaft, and an oil injection mechanism is arranged on the left side of the sealing mechanism. The sealing ring is placed between the front bearing shell and the rear bearing shell, the front bearing shell and the rear bearing shell are fixed through the bolt, and the bearing is located between the front bearing shell and the rear bearing shell, so that the bearing can be sealed and protected through the operation, the oil leakage condition is reduced, the connecting column is pulled, the rubber plug is driven away from the oil injection hole, and then the connecting column is moved upwards; oil is injected between the inner ring and the outer ring of the bearing through oil injection, the connecting column is loosened after oil injection is completed, the first connecting plate can drive the connecting column to move downwards due to the elastic force of the first spring until the rubber plug is aligned with the oil injection hole, the rubber plug blocks the oil injection hole through the elastic force of the second spring, and oil leakage is prevented. According to the operation, the front bearing shell and the rear bearing shell do not need to be detached, time can be saved, and operation is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of electric motors, in particular to an improved electric motor bearing sealing structure. Background Art

[0002] The electric motor is a device that converts electrical energy into mechanical energy. The traditional motor bearing structure is mainly composed of a sealing ring, a bearing outer cover, a retaining ring, an oil slinger, an oil retaining ring, a bearing sleeve, a bearing, and a bearing inner cover.

[0003] According to patent CN 209282989 U, an improved motor bearing sealing structure is disclosed. The traditional bearing sealing structure is improved, the oil retaining ring is cancelled, and the structure of the oil flinging ring is improved. The structure includes an inner ring plate, an outer ring plate, a partition plate and belt teeth. The inner ring plate is fixedly sleeved on the motor shaft, located between the bearing and the retaining ring and arranged axially along the motor shaft. A partition plate is fixed on the inner ring plate near one end of the retaining ring. The partition plate is arranged radially along the motor shaft. The outer edge of the partition plate is provided with belt teeth. An outer ring plate is provided on the partition plate opposite to the inner ring plate, and the outer ring plate is arranged axially along the motor shaft.

[0004] Due to space limitations, the length of the curved path between the oil retaining ring and the oil throwing ring in the patented motor bearing structure is generally short, and the sealing function cannot be achieved normally. The motor often leaks oil, and when oiling the bearing, the bearing shell needs to be disassembled and the oil needs to be injected into the bearing. This process requires a lot of time and is complicated to operate. Utility Model Content

[0005] The purpose of the utility model is to provide an improved motor bearing sealing structure to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: an improved motor bearing sealing structure, comprising a shaft, a sealing mechanism is provided on the surface of the shaft, and an oil injection mechanism is provided on the left side of the sealing mechanism;

[0007] The oil injection mechanism comprises a moving component and a leak-proof component. The moving component is arranged on the left side of the sealing mechanism, and the leak-proof component is arranged inside the moving component.

[0008] Preferably, the sealing mechanism includes a front bearing shell and a rear bearing shell, the front bearing shell is sleeved on the shaft surface, the rear bearing shell is sleeved on the shaft surface, the shaft surface is sleeved with a bearing, a connecting hole is opened on the left side of the front bearing shell near the edge, a threaded hole is opened on the left side of the rear bearing shell near the edge corresponding to the connecting hole, a bolt is rotatably connected in the threaded hole, a sealing ring is arranged between the front bearing shell and the rear bearing shell, and an oil filling hole is opened on the left side of the front bearing shell.

[0009] Preferably, the oil filling hole penetrates to the right side of the front bearing shell, and the connecting hole penetrates to the right side of the front bearing shell. The front bearing shell and the rear bearing shell are tightly connected by bolts, and the bearing is further sealed by a sealing ring.

[0010] Preferably, the moving assembly includes an L-block, which is symmetrically fixedly connected to the left side of the front bearing shell, a third connecting plate is fixedly connected to the bottom end of the back side of the L-block, a sliding groove is provided on the front side of the L-block, a second connecting plate is slidably connected in the sliding groove, a first sliding hole is provided on the top of the second connecting plate, a guide rod is slidably connected in the first sliding hole, a limiting block is fixedly connected to the top end of the guide rod, a first spring is sleeved between the limiting block on the surface of the guide rod and the second connecting plate, and the second connecting plate is fixedly connected to the first connecting plate on the side away from the guide rod.

[0011] Preferably, the bottom end of the guide rod is fixedly connected to the top of the second connecting plate, the top end of the first spring is fixedly connected to the bottom of the limit block, and the bottom end of the first spring is fixedly connected to the top of the second connecting plate.

[0012] Preferably, the anti-leakage component includes a second sliding hole and a connecting column, the second sliding hole is opened on the front side of the first connecting plate, a fixing plate is fixedly connected in the second sliding hole, a rectangular groove is opened on the surface of the connecting column, a rubber plug is fixedly connected to the rear right end of the connecting column, and a second spring is fixedly connected to the right side of the fixing plate.

[0013] Preferably, the connecting column is slidably connected to the surface of the fixed plate through a rectangular groove, the right end of the second spring is fixedly connected to the right side of the rectangular groove, and the rubber plug blocks the oil filling hole through the elastic force of the second spring to prevent the injected oil from leaking.

[0014] Compared with the prior art, the utility model provides an improved motor bearing sealing structure, which has the following beneficial effects:

[0015] 1. The improved motor bearing sealing structure places a sealing ring between the front bearing shell and the rear bearing shell, fixes the front bearing shell and the rear bearing shell with bolts, and the bearing is located between the front bearing shell and the rear bearing shell. This operation can seal and protect the bearing to reduce oil leakage.

[0016] 2. The improved motor bearing sealing structure pulls the connecting column to move the rubber plug away from the oil filling hole, and then moves the connecting column upward to inject oil between the inner ring and the outer ring of the bearing. After the oil filling is completed, the connecting column is released, and the first connecting plate will drive the connecting column to move downward due to the elastic force of the first spring until the rubber plug is aligned with the oil filling hole. The rubber plug then blocks the oil filling hole through the elastic force of the second spring to prevent oil leakage. This operation does not require disassembly of the front bearing shell and the rear bearing shell, which can save time and is simple to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0018] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a three-dimensional planing schematic diagram of the structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the mobile component of the structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the mobile component of the structure of the utility model;

[0022] Figure 5 It is the intention of the structural leak-proof component of the utility model;

[0023] Figure 6 It is a plan view schematic diagram of the leak-proof component of the utility model structure.

[0024] In the figure: 1. shaft; 2. sealing mechanism; 21. front bearing shell; 22. connecting hole; 23. rear bearing shell; 24. sealing ring; 25. threaded hole; 26. bearing; 27. oil filling hole; 28. bolt; 3. oil filling mechanism; 31. moving component; 311. L block; 312. slide groove; 313. third connecting plate; 314. first connecting plate; 315. second connecting plate; 316. first sliding hole; 317. guide rod; 318. limit block; 319. first spring; 32. anti-leakage component; 321. second sliding hole; 322. connecting column; 323. rubber plug; 324. rectangular groove; 325. fixing plate; 326. second spring. DETAILED DESCRIPTION

[0025] 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.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The utility model provides the following technical solutions: Example

[0028] See also Figure 1-2 , an improved motor bearing sealing structure, comprising a shaft 1, a sealing mechanism 2 is arranged on the surface of the shaft 1, and an oil injection mechanism 3 is arranged on the left side of the sealing mechanism 2;

[0029] The oil filling mechanism 3 includes a moving component 31 and a leak-proof component 32 . The moving component 31 is arranged on the left side of the sealing mechanism 2 , and the leak-proof component 32 is arranged inside the moving component 31 .

[0030] The sealing mechanism 2 includes a front bearing shell 21 and a rear bearing shell 23. The front bearing shell 21 is sleeved on the surface of the shaft 1, and the rear bearing shell 23 is sleeved on the surface of the shaft 1. A bearing 26 is sleeved on the surface of the shaft 1. A connecting hole 22 is opened on the left side of the front bearing shell 21 near the edge, and a threaded hole 25 is opened on the left side of the rear bearing shell 23 near the edge corresponding to the connecting hole 22. A bolt 28 is rotatably connected in the threaded hole 25. A sealing ring 24 is arranged between the front bearing shell 21 and the rear bearing shell 23, and an oil filling hole 27 is opened on the left side of the front bearing shell 21.

[0031] The oil filling hole 27 penetrates to the right side of the front bearing shell 21 , and the connecting hole 22 penetrates to the right side of the front bearing shell 21 . The front bearing shell 21 and the rear bearing shell 23 are tightly connected by bolts 28 , and the bearing 26 is further sealed by a sealing ring 24 . Example

[0032] See also Figure 3-6 On the basis of the first embodiment, the oil filling mechanism 3 further comprises a moving component 31 and a leak-proof component 32 , the moving component 31 is arranged on the left side of the sealing mechanism 2 , and the leak-proof component 32 is arranged inside the moving component 31 .

[0033] The moving assembly 31 includes an L block 311, which is symmetrically fixedly connected to the left side of the front bearing shell 21. The third connecting plate 313 is fixedly connected to the bottom end of the back side of the L block 311. A sliding groove 312 is provided on the front side of the L block 311. A second connecting plate 315 is slidably connected in the sliding groove 312. A first sliding hole 316 is provided on the top of the second connecting plate 315. A guide rod 317 is slidably connected in the first sliding hole 316. A limit block 318 is fixedly connected to the top of the guide rod 317. A first spring 319 is sleeved between the limit block 318 and the second connecting plate 315 on the surface of the guide rod 317. The first connecting plate 314 is fixedly connected to the side of the second connecting plate 315 away from the guide rod 317.

[0034] The bottom end of the guide rod 317 is fixedly connected to the top of the second connecting plate 315 , the top end of the first spring 319 is fixedly connected to the bottom of the limit block 318 , and the bottom end of the first spring 319 is fixedly connected to the top of the second connecting plate 315 .

[0035] The anti-leakage component 32 includes a second sliding hole 321 and a connecting column 322. The second sliding hole 321 is opened on the front side of the first connecting plate 314. A fixing plate 325 is fixedly connected in the second sliding hole 321. A rectangular groove 324 is opened on the surface of the connecting column 322. A rubber plug 323 is fixedly connected to the right end of the connecting column 322. A second spring 326 is fixedly connected to the right side of the fixing plate 325.

[0036] The connecting column 322 is slidably connected to the surface of the fixing plate 325 through the rectangular groove 324, and the right end of the second spring 326 is fixedly connected to the right side of the rectangular groove 324. The rubber plug 323 blocks the oil filling hole 27 through the elastic force of the second spring 326 to prevent the injected oil from leaking.

[0037] The rubber plug 323 is then blocked by the elastic force of the second spring 326 to prevent oil leakage. This operation does not require the front bearing shell 21 and the rear bearing shell 23 to be disassembled, which can save time and is simple to operate.

[0038] 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. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. An improved motor bearing sealing structure, comprising a shaft (1), characterized in that: A sealing mechanism (2) is provided on the surface of the shaft (1), and an oil injection mechanism (3) is provided on the left side of the sealing mechanism (2); The oil injection mechanism (3) comprises a moving component (31) and a leak-proof component (32); the moving component (31) is arranged on the left side of the sealing mechanism (2), and the leak-proof component (32) is arranged inside the moving component (31).

2. An improved motor bearing sealing structure according to claim 1, characterized in that: The sealing mechanism (2) comprises a front bearing shell (21) and a rear bearing shell (23); the front bearing shell (21) is sleeved on the surface of the shaft (1); the rear bearing shell (23) is sleeved on the surface of the shaft (1); a bearing (26) is sleeved on the surface of the shaft (1); a connection hole (22) is provided on the left side of the front bearing shell (21) near the edge; a threaded hole (25) is provided on the left side of the rear bearing shell (23) near the edge corresponding to the connection hole (22); a bolt (28) is rotatably connected in the threaded hole (25); a sealing ring (24) is provided between the front bearing shell (21) and the rear bearing shell (23); and an oil filling hole (27) is provided on the left side of the front bearing shell (21).

3. An improved motor bearing sealing structure according to claim 2, characterized in that: The oil filling hole (27) penetrates to the right side of the front bearing shell (21), and the connecting hole (22) penetrates to the right side of the front bearing shell (21).

4. An improved motor bearing sealing structure according to claim 1, characterized in that: The moving assembly (31) comprises an L block (311), wherein the L block (311) is symmetrically fixedly connected to the left side of the front bearing shell (21), a third connecting plate (313) is fixedly connected to the bottom end of the back side of the L block (311), a sliding groove (312) is provided on the front side of the L block (311), a second connecting plate (315) is slidably connected in the sliding groove (312), a first sliding hole (316) is provided on the top of the second connecting plate (315), a guide rod (317) is slidably connected in the first sliding hole (316), a limit block (318) is fixedly connected to the top of the guide rod (317), a first spring (319) is sleeved between the limit block (318) and the second connecting plate (315) on the surface of the guide rod (317), and the first connecting plate (314) is fixedly connected to the side of the second connecting plate (315) away from the guide rod (317).

5. An improved motor bearing sealing structure according to claim 4, characterized in that: The bottom end of the guide rod (317) is fixedly connected to the top of the third connecting plate (313), the top end of the first spring (319) is fixedly connected to the bottom of the limit block (318), and the bottom end of the first spring (319) is fixedly connected to the top of the second connecting plate (315).

6. An improved motor bearing sealing structure according to claim 1, characterized in that: The anti-leakage component (32) comprises a second sliding hole (321) and a connecting column (322); the second sliding hole (321) is formed on the front surface of the first connecting plate (314); a fixing plate (325) is fixedly connected in the second sliding hole (321); a rectangular groove (324) is formed on the surface of the connecting column (322); a rubber plug (323) is fixedly connected to the right end of the connecting column (322); and a second spring (326) is fixedly connected to the right side of the fixing plate (325).

7. An improved motor bearing sealing structure according to claim 6, characterized in that: The connecting column (322) is slidably connected to the surface of the fixing plate (325) via the rectangular groove (324), and the right end of the second spring (326) is fixedly connected to the right side of the rectangular groove (324).

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