Gearbox input shaft with grease leakage prevention structure

Abstract

The utility model relates to the technical field of gearboxes, and discloses a gearbox input shaft with a grease leakage prevention structure, which comprises an input rotating shaft, a high-speed bearing is fixedly connected to the outer wall of the input rotating shaft, a bearing sealing ring is slidably connected to the inner wall of the high-speed bearing, an insertion hole is formed in the bearing sealing ring, and a grease leakage prevention structure is arranged in the insertion hole. A sealing groove is formed in the inner wall of the high-speed bearing, fixing plates are rotationally connected to the two sides of the outer wall of the input rotating shaft, a first concave hole is formed in each fixing plate, a second concave hole is formed in each fixing plate, an electric push rod is fixedly connected to one side of the outer wall of each fixing plate, and a leakage-proof sealing block is fixedly connected to the output end of each electric push rod. According to the utility model, through the mutual cooperation of the electric push rod, the leakage-proof sealing block and the adjusting assembly, the problems that the service life is short and grease leakage is easy to occur due to the fact that the sealing element is easy to be too tight at a high rotating speed are solved, and the effects of adjusting the tightness of the sealing element, prolonging the service life of the bearing and effectively preventing grease leakage are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, in particular to a gearbox input shaft with a grease leakage prevention structure. Background Art

[0002] An automatic transmission is a car transmission that can automatically change the gear ratio while the vehicle is moving, so that the driver does not have to shift gears manually. It is also used in large equipment railway locomotives. Usually, the automatic transmission uses the input end as power, and then uses the transmission input shaft.

[0003] A high-speed bearing generally needs to be installed on the input shaft of the gearbox. The high-speed bearing works with the bearing seal to transfer the power generated by the engine to the transmission to achieve gear shifting, thereby achieving gear shifting adjustment of the vehicle so that the vehicle can be used normally for daily travel.

[0004] However, when the traditional gearbox input shaft is running at high speed, grease leakage is prone to occur, posing a safety hazard. At the same time, at high speeds, the seals are prone to over-tightening, causing heat and, in turn, a shorter service life. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a gearbox input shaft with an anti-grease leakage structure, aiming to improve the problem in the prior art that the gearbox input shaft is prone to grease leakage during high-speed operation, causing safety hazards. At the same time, under high speed conditions, the seal is prone to over-tightening, causing heat, and then resulting in a short service life.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gearbox input shaft with a grease leakage prevention structure, comprising an input rotating shaft, the outer wall of the input rotating shaft is fixedly connected to a high-speed bearing, the inner wall of the high-speed bearing is slidably connected to a bearing sealing ring, a plug hole is provided inside the bearing sealing ring, a sealing groove is provided on the inner wall of the high-speed bearing, both sides of the outer wall of the input rotating shaft are rotatably connected to fixed plates, a first recessed hole is provided inside the fixed plate, a second recessed hole is provided inside the fixed plate, an electric push rod is fixedly connected to one side of the outer wall of the fixed plate, an anti-leakage sealing block is fixedly connected to the output end of the electric push rod, a protective shell is fixedly connected to the other side of the outer wall of the fixed plate, and an adjustment component is provided on the inner wall of the protective shell.

[0007] Furthermore, the adjustment assembly includes a rack and a fan-shaped tooth plate, the outer wall of the rack is arranged on the inner wall of the protective shell, the outer wall of the fan-shaped tooth plate is arranged on the inner wall of the protective shell, one end of the rack is fixedly connected to a push rod, one end of the push rod is fixedly connected to a sealing ring abutment platform, and the outer wall of the sealing ring abutment platform is rotatably connected to an insert block.

[0008] Furthermore, a slide groove is slidably connected to the upper surface of the rack, a top plate is fixedly connected to the upper surface of the slide groove, and an upper surface of the top plate is fixedly connected to the inner wall of the protective shell.

[0009] Furthermore, a fixing frame 1 and a fixing frame 2 are fixedly connected to the lower surface of the top plate, a columnar block 1 is rotatably connected to the inner wall of the fixing frame 1, a connecting rod is fixedly connected to the outer wall of the columnar block 1, and one end of the connecting rod is fixedly connected to the outer wall of the fan-shaped tooth plate.

[0010] Furthermore, the inner wall of the second fixing frame is rotatably connected to the second columnar block, and the outer wall of the second columnar block is fixedly connected to the first gear and the second gear in sequence.

[0011] Furthermore, the gear 1 is meshed with the rack, and the gear 2 is meshed with the sector-shaped toothed plate.

[0012] Furthermore, the outer wall of the sector-shaped tooth plate is fixedly connected with a connecting rod 1, and one end of the connecting rod 1 is rotatably connected with a connecting rod 2.

[0013] Furthermore, one end of the second connecting rod is fixedly connected to a rotating shaft, a motor is arranged under the top plate, and an output end of the motor is connected to the rotating shaft.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the bearing seal ring, the insert block, the seal ring abutment platform, the propulsion rod, the rack, the fan-shaped tooth plate, the gear one and the gear two cooperate with each other, thereby solving the problem that the seal is easily over-tightened under high speed conditions, thereby causing heat and further shortening the service life, thereby achieving the effect of being able to adjust the tightness of the seal and thus increasing the service life of the bearing.

[0016] 2. In the utility model, the fixing plate, the electric push rod and the anti-leakage sealing block cooperate with each other, thereby solving the problem of grease leakage and potential safety hazards caused by the high-speed operation of the gearbox input shaft, thereby achieving the effect of effectively preventing grease leakage and ensuring the safe operation of the gearbox input shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the gearbox input shaft with a grease leakage prevention structure proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the fixing plate structure of the transmission input shaft with a grease leakage prevention structure proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the high-speed bearing structure of the gearbox input shaft with a grease leakage prevention structure proposed by the utility model;

[0020] Figure 4 This is a schematic diagram of the sealing ring abutment structure of the gearbox input shaft with a grease leakage prevention structure proposed by the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the adjustment component of the gearbox input shaft with a grease leakage prevention structure proposed by the utility model;

[0022] Figure 6 This is a schematic diagram of the motor structure of the gearbox input shaft with a grease leakage prevention structure proposed by the utility model.

[0023] Legend:

[0024] 1. Input shaft; 2. High-speed bearing; 3. Fixed plate; 4. Protective shell; 5. Concave hole 1; 6. Adjustment component; 7. Concave hole 2; 8. Electric push rod; 9. Leak-proof sealing block; 10. Sealing groove; 11. Bearing sealing ring; 12. Insert block; 13. Sealing ring abutment platform; 14. Push rod; 15. Rack; 16. Top plate; 17. Slide groove; 18. Fixed frame 1; 19. Column block 1; 20. Fixed frame 2; 21. Connecting rod; 22. Fan-shaped tooth plate; 23. Gear 1; 24. Column block 2; 25. Gear 2; 26. Connecting rod 1; 27. Connecting rod 2; 28. Rotating shaft; 29. ​​Motor; 30. Socket. 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] Reference Figure 1 , Figure 2 and Figure 3 The utility model provides an embodiment: a gearbox input shaft with an anti-grease leakage structure, including an input rotating shaft 1, a high-speed bearing 2 is fixedly connected to the outer wall of the input rotating shaft 1, a bearing sealing ring 11 is slidably connected to the inner wall of the high-speed bearing 2, a plug hole 30 is opened inside the bearing sealing ring 11, a sealing groove 10 is opened on the inner wall of the high-speed bearing 2, both sides of the outer wall of the input rotating shaft 1 are rotatably connected to fixed plates 3, a concave hole 1 5 is opened inside the fixed plate 3, a concave hole 2 7 is opened inside the fixed plate 3, an electric push rod 8 is fixedly connected to one side of the outer wall of the fixed plate 3, an anti-leakage sealing block 9 is fixedly connected to the output end of the electric push rod 8, a protective shell 4 is fixedly connected to the other side of the outer wall of the fixed plate 3, and an adjusting component 6 is arranged on the inner wall of the protective shell 4.

[0027] Specifically, by setting up the electric push rod 8, the output end of the electric push rod 8 can push the leak-proof sealing block 9 to block the gap between the sealing groove 10 and the bearing sealing ring 11, thereby preventing the grease in the high-speed bearing 2 from leaking, thereby achieving sealing; the recessed hole 1 5 on the fixed plate 3 can facilitate the inward feeding of the rack 15, further improving the adjustment effect; the recessed hole 2 7 cooperates with the input rotating shaft 1 so that the input rotating shaft 1 rotates in the recessed hole 2 7, making the input rotating shaft 1 run more smoothly.

[0028] Reference Figure 1 and Figure 4 The adjustment component 6 includes a rack 15 and a fan-shaped tooth plate 22. The outer wall of the rack 15 is set on the inner wall of the protective shell 4, and the outer wall of the fan-shaped tooth plate 22 is set on the inner wall of the protective shell 4. One end of the rack 15 is fixedly connected to the push rod 14, and one end of the push rod 14 is fixedly connected to the sealing ring abutment platform 13. The outer wall of the sealing ring abutment platform 13 is rotatably connected to the plug block 12.

[0029] Specifically, by setting the plug block 12 to cooperate with the plug-in hole 30, connection and removal are convenient, making replacement and maintenance more convenient; the feed length of the push rod 14 is adjusted by moving the rack 15, and then the position of the bearing sealing ring 11 is adjusted to adapt to the operation of the input shaft under different conditions; the sealing ring abutment platform 13 cooperates with the bearing sealing ring 11, and the plug block 12 is rotatably connected to the inner wall of the sealing ring abutment platform 13, so that the high-speed bearing 2 can also adjust the tightness of the seal when rotating.

[0030] Reference Figure 4 , Figure 5 and Figure 6 The upper surface of the rack 15 is slidably connected with a slide groove 17, the upper surface of the slide groove 17 is fixedly connected with a top plate 16, the upper surface of the top plate 16 is fixedly connected to the inner wall of the protective shell 4, and the lower surface of the top plate 16 is fixedly connected to a fixing frame 18 and a fixing frame 20, the inner wall of the fixing frame 18 is rotatably connected with a column block 19, and the outer wall of the column block 19 is fixedly connected with a connecting rod 21, and one end of the connecting rod 21 is fixedly connected to the outer wall of the fan-shaped tooth plate 22 and the inner wall of the fixing frame 20. A cylindrical block 24 is connected, and a gear 1 23 and a gear 25 are fixedly connected to the outer wall of the cylindrical block 24 in sequence. The gear 1 23 is meshed with the rack 15, and the gear 25 is meshed with the fan-shaped toothed plate 22. A connecting rod 1 26 is fixedly connected to the outer wall of the fan-shaped toothed plate 22. One end of the connecting rod 1 26 is rotatably connected to the connecting rod 2 27, and one end of the connecting rod 27 is fixedly connected to the rotating shaft 28. A motor 29 is arranged below the top plate 16, and the output end of the motor 29 is connected to the rotating shaft 28.

[0031] Specifically, driven by the motor 29, the fan-shaped toothed plate 22 meshes with the gear 2 25 to cause the column block 24 to rotate, and the gear 1 23 meshes with the rack 15 to cause the rack 15 to slide in the slide groove 17, pushing the push rod 14 to move. The feed amplitude of the push rod 14 can be adjusted with the rotation speed of the motor 29, so as to achieve more precise adjustment of the bearing sealing ring 11, so that the tightness of the seal is within a controllable range, further improving the service life of the bearing.

[0032] Working principle: When the input shaft of the gearbox is used, the motor 29 in the adjustment component 6 is started, so that the output end of the motor 29 drives the rotating shaft 28 to rotate, thereby rotating the connecting rod 27, and then driving the connecting rod 1 26 to swing. Under the rotation of the column block 19 and the transmission through the connecting rod 21, the fan-shaped toothed plate 22 is meshed with the gear 25 on the column block 24, so that the column block 24 rotates, so that the gear 1 23 on the column block 24 is meshed with the rack 15, so that the rack 15 slides in the slide groove 17, pushing the push rod 19 to move. The advance rod 14 is pushed toward the high-speed bearing 2, through the recessed hole 5 on the fixed plate 3, so that the sealing ring abuts the plug block 12 on the platform 13 and is inserted into the plug hole 30 in the bearing sealing ring 11, thereby adjusting the movement of the bearing sealing ring 11 in the sealing groove 10, avoiding heating caused by over-tightening of the sealing member, and at the same time starting the electric push rod 8 on the fixed plate 3, so that its output end drives the leak-proof sealing block 9 to push inward, blocking the gap between the sealing groove 10 and the bearing sealing ring 11, thereby preventing the grease in the high-speed bearing 2 from leaking and achieving better sealing.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gearbox input shaft with a grease leakage prevention structure, comprising an input rotating shaft (1), characterized in that: The outer wall of the input rotating shaft (1) is fixedly connected to a high-speed bearing (2), the inner wall of the high-speed bearing (2) is slidably connected to a bearing sealing ring (11), a plug hole (30) is provided inside the bearing sealing ring (11), a sealing groove (10) is provided on the inner wall of the high-speed bearing (2), both sides of the outer wall of the input rotating shaft (1) are rotatably connected to fixed plates (3), a first concave hole (5) is provided inside the fixed plate (3), a second concave hole (7) is provided inside the fixed plate (3), one side of the outer wall of the fixed plate (3) is fixedly connected to an electric push rod (8), the output end of the electric push rod (8) is fixedly connected to a leakproof sealing block (9), the other side of the outer wall of the fixed plate (3) is fixedly connected to a protective shell (4), and an adjustment component (6) is provided on the inner wall of the protective shell (4).

2. The transmission input shaft with a grease leakage prevention structure according to claim 1, characterized in that: The adjustment assembly (6) comprises a rack (15) and a sector-shaped tooth plate (22); the outer wall of the rack (15) is arranged on the inner wall of the protective shell (4); the outer wall of the sector-shaped tooth plate (22) is arranged on the inner wall of the protective shell (4); one end of the rack (15) is fixedly connected to a propulsion rod (14); one end of the propulsion rod (14) is fixedly connected to a sealing ring abutment platform (13); and the outer wall of the sealing ring abutment platform (13) is rotatably connected to an insertion block (12).

3. The transmission input shaft with a grease leakage prevention structure according to claim 2, characterized in that: The upper surface of the rack (15) is slidably connected to a slide groove (17), the upper surface of the slide groove (17) is fixedly connected to a top plate (16), and the upper surface of the top plate (16) is fixedly connected to the inner wall of the protective shell (4).

4. The transmission input shaft with a grease leakage prevention structure according to claim 3, characterized in that: The lower surface of the top plate (16) is fixedly connected to a fixing frame 1 (18) and a fixing frame 2 (20); the inner wall of the fixing frame 1 (18) is rotatably connected to a columnar block 1 (19); the outer wall of the columnar block 1 (19) is fixedly connected to a connecting rod (21); one end of the connecting rod (21) is fixedly connected to the outer wall of the fan-shaped tooth plate (22).

5. The transmission input shaft with a grease leakage prevention structure according to claim 4, characterized in that: The inner wall of the second fixing frame (20) is rotatably connected to a second columnar block (24), and the outer wall of the second columnar block (24) is fixedly connected to a first gear (23) and a second gear (25) in sequence.

6. The transmission input shaft with a grease leakage prevention structure according to claim 5, characterized in that: The gear one (23) is meshed with the rack (15), and the gear two (25) is meshed with the sector-shaped toothed plate (22).

7. The transmission input shaft with a grease leakage prevention structure according to claim 6, characterized in that: The outer wall of the sector-shaped tooth plate (22) is fixedly connected to a connecting rod 1 (26), and one end of the connecting rod 1 (26) is rotatably connected to a connecting rod 2 (27).

8. The transmission input shaft with a grease leakage prevention structure according to claim 7, characterized in that: One end of the second connecting rod (27) is fixedly connected to a rotating shaft (28), and a motor (29) is arranged below the top plate (16), and the output end of the motor (29) is connected to the rotating shaft (28).

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