Motor shaft sealing structure

Abstract

The utility model belongs to the technical field of motors, and particularly relates to a motor shaft sealing structure, which comprises a sealing structure arranged on a rotating shaft of a motor shell, the sealing structure comprises a second annular plate, the second annular plate is composed of two groups of semicircular clamping frames, the inner wall of each clamping frame is provided with a first annular groove, and the second annular plate is provided with a second annular groove. An annular connecting block is fixedly installed on the outer wall of the rotating shaft, and the outer wall of the annular connecting block is in sliding connection with the inner wall of the annular groove I. A sealing bearing is installed on the inner wall of the annular groove II of the rotating shaft, and two sets of clamping frames are clamped from the two sides of the rotating shaft. The inner wall of a first annular groove formed in the inner side of the clamping frame is slidably connected with the outer wall of an annular connecting block fixed to the outer wall of the rotating shaft. And meanwhile, an annular convex block on the inner side of an annular sleeve I fixedly connected with the top end of the clamping frame is driven to abut against, the probability that dust permeates from a connecting gap between the rotating shaft and the motor shell is reduced, the structure is simple, and installation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and particularly relates to a motor shaft sealing structure. Background Art

[0002] A motor generally includes a rotor, a stator and a shaft. When the motor is running, the shaft needs to rotate, but at the same time, it needs to be sealed to prevent external substances from entering the interior of the motor. Therefore, the motor shaft sealing structure is an important part of the motor design.

[0003] In the prior art, the motor shaft sealing structure generally includes a shaft seal and a gasket. The shaft seal is usually composed of a shaft sleeve, a sealing ring and a spring, and is used to prevent liquids and gases from entering the interior of the motor from both sides of the shaft. The gasket is usually made of rubber or other elastic materials and is used to fill the gap between the shaft and the shaft hole to prevent liquids and gases from entering the interior of the motor from the shaft hole. In the existing device, the installation of the sealing structure is also relatively troublesome, which affects the use.

[0004] Therefore, we invented a motor shaft sealing structure. Summary of the Invention

[0005] In view of the above and / or existing problems in a motor shaft sealing structure, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide a motor shaft sealing structure that can solve the above-mentioned problems in the prior art.

[0007] To solve the above technical problems, according to one aspect of the present utility model, the following technical solutions are provided:

[0008] A motor shaft sealing structure, which includes: a sealing structure installed on the rotating shaft of the motor housing, and the sealing structure includes:

[0009] A second annular plate, which is composed of two groups of semi-circular clamping frames. An annular groove one is provided on the inner wall of the clamping frame. An annular connecting block is fixedly installed on the outer wall of the rotating shaft, and the outer wall of the annular connecting block is slidably connected to the inner wall of the annular groove one.

[0010] As a preferred scheme of a motor shaft sealing structure according to the present utility model, wherein: connection grooves are provided on both sides of the top end of the motor housing. A fixing block is slidably connected to the inner wall of the connection groove. Positioning holes are provided on the fixing block and the inner wall of the connection groove, and they are fixed by bolts passing through the two groups of positioning holes.

[0011] As a preferred scheme of a motor shaft sealing structure according to the present utility model, wherein: annular sleeves one are fixedly installed at the top and bottom ends of the clamping frame, and the inner wall of the annular sleeve one is slidably connected to the outer wall of the rotating shaft.

[0012] As a preferred embodiment of a motor shaft sealing structure according to the present utility model, wherein: an annular groove II is formed on the outer wall of the rotating shaft, and a sealing bearing is installed on the inner wall of the annular groove II.

[0013] As a preferred embodiment of a motor shaft sealing structure according to the present utility model, wherein: an annular protrusion is fixedly installed on the inner side of the first annular sleeve, and one end of the annular protrusion away from the first annular sleeve abuts against the outer wall of the sealing bearing.

[0014] As a preferred embodiment of a motor shaft sealing structure according to the present utility model, wherein: a groove is formed at the top end of the motor housing, and an annular plate is fixedly installed at the bottom end of the inner wall of the groove.

[0015] As a preferred embodiment of a motor shaft sealing structure according to the present utility model, wherein: an annular groove is formed at the bottom end of the first annular sleeve located at the bottom end of the card frame, and the inner wall of the annular groove is slidably connected to the outer wall of the annular plate.

[0016] As a preferred embodiment of a motor shaft sealing structure according to the present utility model, wherein: a sealing rubber pad is fixedly installed on the outer wall of the annular plate.

[0017] Compared with the prior art:

[0018] A sealing bearing is installed on the inner wall of the annular groove II of the rotating shaft. Two card frames are clamped on both sides of the rotating shaft, so that the inner wall of the annular groove I formed on the inner side of the card frame is slidably connected to the outer wall of the annular connection block fixed on the outer wall of the rotating shaft; at the same time, the annular protrusion on the inner side of the first annular sleeve fixedly connected to the top end of the card frame is driven to abut, and at the same time, the fixing block installed at the bottom end of the first annular sleeve is driven to be inserted into the connection grooves formed on both sides of the top end of the motor housing, reducing the probability of dust infiltrating from the connection gap between the rotating shaft and the motor housing, and at the same time, the structure is simple and convenient for installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the front view of the present utility model;

[0020] Figure 2 is the front view of the motor housing of the present utility model;

[0021] Figure 3 is the front view of the clamping plate of the second annular plate of the present utility model;

[0022] Figure 4 is the side front view of the second annular plate of the present utility model.

[0023] In the figure: motor housing 1, rotating shaft 2, groove 3, annular plate 4, sealing structure, second annular plate 5, first annular groove 6, annular connecting block 7, second annular groove 8, sealed bearing 9, first annular sleeve 10, annular protrusion 11, annular groove 12, sealing rubber pad 13, fixing block 14, connecting groove 15. Detailed implementation mode

[0024] To make the objectives, technical solutions and advantages of the present utility model clearer, the following will further describe in detail the implementation modes of the present utility model in conjunction with the accompanying drawings. Embodiment 1:

[0025] The present utility model provides a motor shaft sealing structure, which has the advantages of convenient use and improved efficiency. Please refer to Figures 1-4 , including a sealing structure installed on the rotating shaft 2 of the motor housing 1. The sealing structure includes:

[0026] The second annular plate 5 is composed of two groups of semi-circular clamping frames. The inner wall of the clamping frame is provided with a first annular groove 6. The outer wall of the rotating shaft 2 is fixedly installed with an annular connecting block 7. The outer wall of the annular connecting block 7 is slidably connected with the inner wall of the first annular groove 6;

[0027] On both sides of the top end of the motor housing 1, there are connecting grooves 15. The inner wall of the connecting groove 15 is slidably connected with a fixing block 14. Positioning holes are provided on the fixing block 14 and the inner wall of the connecting groove 15, and they are fixed by bolts passing through the two groups of positioning holes;

[0028] The top end of the clamping frame is fixedly installed with a first annular sleeve 10. The inner wall of the first annular sleeve 10 is slidably connected with the outer wall of the rotating shaft 2;

[0029] The outer wall of the rotating shaft 2 is provided with a second annular groove 8. The inner wall of the second annular groove 8 is provided with a sealed bearing 9;

[0030] An annular protrusion 11 is fixedly installed on the inner side of the first annular sleeve 10. One end of the annular protrusion 11 away from the first annular sleeve 10 abuts against the outer wall of the sealed bearing 9. By the inner side of the annular protrusion 11 abutting against the outer wall of the sealed bearing 9, while not affecting the rotation of the rotating shaft 2, the gap is reduced.

[0031] In specific use, those skilled in the art will fixedly install an annular connecting block 7 on the outer wall of the rotating shaft 2. Annular grooves II 8 are opened on the outer wall of the rotating shaft 2 on both sides of the annular connecting block 7. A sealing bearing 9 is installed on the inner wall of the annular groove II 8. Two sets of clamping frames are clamped onto the rotating shaft 2 from both sides, such that the inner wall of the annular groove I 6 opened on the inner side of the clamping frame is slidably connected to the outer wall of the annular connecting block 7 fixedly arranged on the outer wall of the rotating shaft 2; meanwhile, the annular convex block 11 inside the annular sleeve I 10 fixedly connected to the top end of the clamping frame is driven to abut, and meanwhile, the fixing block 14 installed at the bottom end of the annular sleeve I 10 is driven to be inserted into the connecting grooves 15 opened on both sides of the top end of the motor housing 1 and fixed by bolts. Meanwhile, the positioning plates fixed on both sides of the two sets of clamping frames are fixed by bolts. Embodiment 2:

[0032] The present utility model provides a motor shaft sealing structure. Please refer to Figures 1-4 , annular sleeves I 10 are fixedly installed at both the top end and the bottom end of the clamping frame. A groove 3 is opened at the top end of the motor housing 1, and an annular plate 4 is fixedly installed at the bottom end of the inner wall of the groove 3;

[0033] An annular groove 12 is opened at the bottom end of the annular sleeve I 10 located at the bottom end of the clamping frame, and the outer wall of the annular plate 4 is slidably connected to the inner wall of the annular groove 12.

[0034] In specific use, those skilled in the art will fixedly install an annular connecting block 7 on the outer wall of the rotating shaft 2. Annular grooves II 8 are opened on the outer wall of the rotating shaft 2 on both sides of the annular connecting block 7. A sealing bearing 9 is installed on the inner wall of the annular groove II 8. The annular sleeves I 10 at the bottom ends of the two sets of clamping frames are inserted into the groove 3 opened at the top end of the motor housing 1. Meanwhile, the annular groove 12 opened on the annular sleeve I 10 at the bottom end of the clamping frame is inserted into the annular plate 4 fixedly installed in the groove 3;

[0035] Then, the two sets of clamping frames are pushed and clamped onto the rotating shaft 2 from both sides, and the annular groove 12 is pushed to move inwards, such that the outer wall of the annular plate 4 abuts against the outer side of the inner wall of the annular groove 12;

[0036] Meanwhile, the inner wall of the annular groove I 6 opened on the inner side of the clamping frame is slidably connected to the outer wall of the annular connecting block 7 fixedly arranged on the outer wall of the rotating shaft 2; meanwhile, the annular convex blocks 11 inside the annular sleeves I 10 fixedly connected to the top end and the bottom end of the clamping frame are driven to abut, and meanwhile, the fixing block 14 installed at the bottom end of the annular sleeve I 10 is driven to be inserted into the connecting grooves 15 opened on both sides of the top end of the motor housing 1 and fixed by bolts. Meanwhile, the positioning plates fixed on both sides of the two sets of clamping frames are fixed by bolts. Embodiment 3:

[0037] The present utility model provides a motor shaft sealing structure. Please refer to Figures 1-4 , a sealing rubber pad 13 is fixedly installed on the outer wall of the annular plate 4.

[0038] In specific use, those skilled in the art will fixedly install an annular connecting block 7 on the outer wall of the rotating shaft 2. Annular grooves II 8 are formed on the outer wall of the rotating shaft 2 on both sides of the annular connecting block 7. Sealing bearings 9 are installed on the inner wall of the annular grooves II 8. The annular sleeves I 10 at the bottom ends of the two sets of card frames are inserted into the grooves 3 formed at the top end of the motor housing 1. At the same time, the annular grooves 12 formed on the annular sleeves I 10 at the bottom ends of the card frames are inserted into the annular plates 4 fixedly installed in the grooves 3.

[0039] Then, push the two sets of card frames to be clamped from both sides of the rotating shaft 2, and push the annular grooves 12 to move inward, so that the outer wall of the annular plate 4 abuts against the outer side of the inner wall of the annular groove 12, and the sealing rubber pad 13 outside the annular plate 4 is squeezed to improve the sealing performance.

[0040] At the same time, the inner wall of the annular groove I 6 formed on the inner side of the card frame is slidably connected to the outer wall of the annular connecting block 7 fixed to the outer wall of the rotating shaft 2; at the same time, the annular protrusions 11 inside the annular sleeves I 10 fixedly connected to the top and bottom ends of the card frame are driven to abut against each other, and at the same time, the fixing blocks 14 installed at the bottom ends of the annular sleeves I 10 are driven to be inserted into the connecting grooves 15 formed on both sides of the top end of the motor housing 1 and fixed by bolts. At the same time, the positioning plates fixed on both sides of the two sets of card frames are fixed by bolts.

[0041] Although the present invention has been described above with reference to the embodiments, various improvements can be made to it and its components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention can be combined with each other in any way. The exhaustive description of these combinations is not given in this specification only for the sake of saving space and resources. Therefore, the present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A motor shaft sealing structure, comprising a sealing structure mounted on a rotating shaft (2) of a motor housing (1), characterized in that: The sealing structure includes: A second annular plate (5), which is composed of two groups of semi-circular clamping frames. An annular groove one (6) is provided on the inner wall of the clamping frame. An annular connecting block (7) is fixedly installed on the outer wall of the rotating shaft (2), and the outer wall of the annular connecting block (7) is slidably connected with the inner wall of the annular groove one (6).

2. The motor shaft sealing structure according to claim 1, wherein On both sides of the top end of the motor housing (1), connecting grooves (15) are provided. A fixing block (14) is slidably connected to the inner wall of the connecting groove (15). Positioning holes are provided on the fixing block (14) and the inner wall of the connecting groove (15), and they are fixed by bolts passing through the two groups of positioning holes.

3. The motor shaft sealing structure according to claim 2, characterized in that, At the top and bottom ends of the clamping frame, annular sleeves one (10) are fixedly installed, and the inner wall of the annular sleeve one (10) is slidably connected with the outer wall of the rotating shaft (2).

4. A motor shaft sealing structure according to claim 3, characterized in that, An annular groove two (8) is provided on the outer wall of the rotating shaft (2), and a sealing bearing (9) is installed on the inner wall of the annular groove two (8).

5. The motor shaft sealing structure according to claim 4, characterized in that, An annular convex block (11) is fixedly installed inside the annular sleeve one (10), and one end of the annular convex block (11) away from the annular sleeve one (10) abuts against the outer wall of the sealing bearing (9).

6. The motor shaft sealing structure according to claim 5, characterized in that, A groove (3) is provided at the top end of the motor housing (1), and an annular plate (4) is fixedly installed at the bottom end of the inner wall of the groove (3).

7. The motor shaft sealing structure according to claim 6, characterized in that, An annular groove (12) is provided at the bottom end of the annular sleeve one (10) located at the bottom end of the clamping frame, and the inner wall of the annular groove (12) is slidably connected with the outer wall of the annular plate (4).

8. The motor shaft sealing structure according to claim 7, characterized in that, A sealing rubber pad (13) is fixedly installed on the outer wall of the annular plate (4).

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