Gear shifting shaft supporting structure

Abstract

The utility model discloses a gear shifting shaft supporting structure which comprises a driving rotating shaft and a gear shifting shaft. A driving gear I and a driving gear II are mounted on the driving rotating shaft; a gear shifting gear I and a gear shifting gear II are mounted on the gear shifting shaft; the upper supporting mechanism is arranged on the upper half portion of the gear shifting shaft and used for supporting the upper half portion of the gear shifting shaft. The lower supporting mechanism is arranged on the lower half portion of the gear shifting shaft and used for supporting the lower half portion of the gear shifting shaft, the structure is reasonable, the movement stability of the gear shifting shaft can be effectively improved, and therefore the service life of a transmission is prolonged, and the use requirement is better met.

Description

Technical Field

[0001] The utility model relates to the technical field of shift shafts, in particular to a shift shaft support structure. Background Technique

[0002] An automatic transmission is a speed-changing device used to coordinate the rotational speed of the engine and the actual driving speed of the wheels, and is used to exert the best performance of the engine. The transmission can generate different speed ratios between the engine and the wheels during the driving process of the vehicle to achieve the transmission of rotational speeds of different gears.

[0003] A support structure is usually required to be arranged on the shift shaft in the transmission to improve its stability. If the shift shaft does not work smoothly, it may cause excessive load on the motor and insufficient rigidity of the transmission shaft, resulting in problems such as running vibration and reduced mechanical life. Therefore, there is an urgent need for a shift shaft support structure to improve the running stability of the shift shaft. Content of the Utility Model

[0004] The purpose of the utility model is to provide a shift shaft support structure to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A shift shaft support structure includes: a driving rotating shaft and a shift shaft; a driving gear one and a driving gear two are installed on the driving rotating shaft; a shift gear one and a shift gear two are installed on the shift shaft; an upper support mechanism is arranged on the upper half of the shift shaft for supporting the upper half of the shift shaft; a lower support mechanism is arranged on the lower half of the shift shaft for supporting the lower half of the shift shaft.

[0007] As a preferred solution, the upper support mechanism includes an upper support sleeve installed on the upper half of the shift shaft. An upper ball inner ring one is arranged on the upper half of the upper support sleeve, and an upper ball inner ring two is also arranged on the lower half of the upper support sleeve. An upper sliding outer ring is also arranged on the upper support sleeve, and a plurality of upper rollers are installed to roll inside the upper sliding outer ring.

[0008] As a preferred solution, the inner side of the upper roller is attached to the outer wall of the upper support sleeve, and the outer side of the upper roller is attached to the inner wall of the upper sliding outer ring.

[0009] As a preferred solution, a locking nut one is also screwed on the upper end of the shift shaft.

[0010] As a preferred solution, the lower support mechanism includes a lower support sleeve installed on the lower half of the shift shaft. A lower ball inner ring one is arranged on the lower half of the lower support sleeve, and a lower ball inner ring two is also arranged on the upper half of the lower support sleeve. A lower sliding outer ring is also arranged on the lower support sleeve, and a plurality of lower rollers are installed to roll inside the lower sliding outer ring.

[0011] As a preferred solution, the inner side of the lower roller is in contact with the outer wall of the lower support sleeve, and the outer side of the lower roller is in contact with the inner wall of the lower sliding outer ring.

[0012] As a preferred solution, a second locking nut is also screwed onto the lower end of the shift shaft.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows. The structure of the present utility model is reasonable, which can effectively improve the stability of the movement of the shift shaft, thereby extending the service life of the transmission and better meeting the use requirements. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of the shift shaft of a shift shaft support structure when the shift shaft is in the first gear position;

[0015] Figure 2 It is a schematic structural diagram of the shift shaft of a shift shaft support structure when the shift shaft is in the second gear position.

[0016] In the figure: 1, driving rotating shaft; 11, first driving gear; 12, second driving gear; 2, shift shaft; 21, first locking nut; 22, second locking nut; 23, first shift gear; 24, second shift gear; 3, upper support mechanism; 31, first upper ball inner ring; 32, second upper ball inner ring; 33, upper roller; 34, upper sliding outer ring; 35, upper support sleeve; 4, lower support mechanism; 41, first lower ball inner ring; 42, second lower ball inner ring; 43, lower roller; 44, lower sliding outer ring; 45, lower support sleeve. Detailed Embodiments

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] Embodiment: Please refer to Figures 1 to 2 , a shift shaft support structure, including: a driving rotating shaft 1 and a shift shaft 2; a first driving gear 11 and a second driving gear 12 are installed on the driving rotating shaft 1; a first shift gear 23 and a second shift gear 24 are installed on the shift shaft 2; an upper support mechanism 3, arranged on the upper half of the shift shaft 2, for supporting the upper half of the shift shaft 2; a lower support mechanism 4, arranged on the lower half of the shift shaft 2, for supporting the lower half of the shift shaft 2. In this embodiment, the shift shaft 2 is pushed by an oil cylinder to move, thereby realizing the adjustment of the gear position.

[0019] Working principle of the utility model: The oil cylinder drives the shift shaft to move downward, so that the second shift gear 24 meshes with the second driving gear 12. At this time, the transmission is in the first gear. The upper support mechanism 3 and the lower support mechanism 4 cooperate to ensure the stable operation of the shift shaft 2;

[0020] The oil cylinder drives the shift shaft 2 to move upward, so that the second shift gear 24 is separated from the second driving gear 12, and the first shift gear 23 meshes with the first driving gear 11. At this time, the transmission is in the second gear. The upper support mechanism 3 and the lower support mechanism 4 still cooperate to ensure the stable operation of the shift shaft 2, thereby improving the service life of the transmission.

[0021] As a further solution, the upper support mechanism 3 includes an upper support sleeve 35 installed on the upper half of the shift shaft 2. The upper half of the upper support sleeve 35 is provided with an upper ball inner ring one 31. The lower half of the upper support sleeve 35 is also provided with an upper ball inner ring two 32. The upper support sleeve 35 is also provided with an upper sliding outer ring 34. A number of upper rollers 33 are installed in the upper sliding outer ring 34 in a rolling manner. In this embodiment, the inner side of the upper roller 33 is attached to the outer wall of the upper support sleeve 35, and the outer side of the upper roller 33 is attached to the inner wall of the upper sliding outer ring 34. A locking nut one 21 is also screwed on the upper end of the shift shaft 2. In this implementation, the upper sliding outer ring 34 is fixed to the upper sleeve inside the transmission.

[0022] As a further solution, the lower support mechanism 4 includes a lower support sleeve 45 installed on the lower half of the shift shaft 2. The lower half of the lower support sleeve 45 is provided with a lower ball inner ring one 41. The upper half of the lower support sleeve 45 is also provided with a lower ball inner ring two 42. The lower support sleeve 45 is also provided with a lower sliding outer ring 44. A number of lower rollers 43 are installed in the lower sliding outer ring 44 in a rolling manner. The inner side of the lower roller 43 is attached to the outer wall of the lower support sleeve 45, and the outer side of the lower roller 43 is attached to the inner wall of the lower sliding outer ring 44. A locking nut two 22 is also screwed on the lower end of the shift shaft 2. In this embodiment, the lower sliding outer ring 44 is fixed to the lower sleeve inside the transmission. [[ID=ll]]

[0023] When the transmission is in the first gear, the upper ball inner ring two 32 on the upper half of the upper support sleeve 35 moves to the position of the upper roller 33, and the lower ball inner ring two 42 on the upper half of the lower support sleeve 45 moves to the position of the lower roller 4'. At this time, the upper sliding outer ring 34 and the lower sliding outer ring 44 can support the shift shaft 2, improving the stability of its operation;

[0024] When the transmission is in the second gear position, the upper inner race of the upper ball 31 at the lower half of the upper support sleeve 35 moves to the position of the upper roller 33, and the lower inner race of the lower ball 41 at the lower half of the lower support sleeve 45 moves to the position of the lower roller 43. At this time, the upper sliding outer ring 34 and the lower sliding outer ring 44 can still support the shift shaft 2, thereby ensuring the stability of the operation of the shift shaft 2 and further extending the service life of the transmission.

[0025] In the present utility model, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only relationship terms determined for the convenience of describing the structural relationship of each component or element of the present utility model, and do not specifically refer to any component or element of the present utility model, and should not be construed as a limitation of the present utility model.

Claims

1. A shift shaft support structure, characterized in that, Including: A driving rotating shaft (1) and a gear shifting shaft (2); A driving gear one (11) and a driving gear two (12) are installed on the driving rotating shaft (1); A gear shifting gear one (23) and a gear shifting gear two (24) are installed on the gear shifting shaft (2); An upper supporting mechanism (3), which is arranged on the upper half of the gear shifting shaft (2) and is used for supporting the upper half of the gear shifting shaft (2); A lower supporting mechanism (4), which is arranged on the lower half of the gear shifting shaft (2) and is used for supporting the lower half of the gear shifting shaft (2).

2. The variable speed shaft support structure according to claim 1, characterized in that: The upper supporting mechanism (3) includes an upper supporting sleeve (35) installed on the upper half of the gear shifting shaft (2). An upper ball inner ring one (31) is arranged on the upper half of the upper supporting sleeve (35), and an upper ball inner ring two (32) is further arranged on the lower half of the upper supporting sleeve (35). An upper sliding outer ring (34) is also arranged on the upper supporting sleeve (35), and a plurality of upper rollers (33) are rotatably installed in the upper sliding outer ring (34).

3. The shift shaft support structure according to claim 2, characterized in that: The inner side of the upper roller (33) is in contact with the outer wall of the upper supporting sleeve (35), and the outer side of the upper roller (33) is in contact with the inner wall of the upper sliding outer ring (34).

4. The shift shaft support structure according to claim 3, characterized in that: A locking nut one (21) is also screwed on the upper end of the gear shifting shaft (2).

5. A shift shaft support structure according to claim 4, characterized in that: The lower supporting mechanism (4) includes a lower supporting sleeve (45) installed on the lower half of the gear shifting shaft (2). A lower ball inner ring one (41) is arranged on the lower half of the lower supporting sleeve (45), and a lower ball inner ring two (42) is further arranged on the upper half of the lower supporting sleeve (45). A lower sliding outer ring (44) is also arranged on the lower supporting sleeve (45), and a plurality of lower rollers (43) are rotatably installed in the lower sliding outer ring (44).

6. The shift shaft support structure according to claim 5, characterized in that: The inner side of the lower roller (43) is in contact with the outer wall of the lower supporting sleeve (45), and the outer side of the lower roller (43) is in contact with the inner wall of the lower sliding outer ring (44).

7. A shift shaft support structure according to claim 6, characterized in that: A locking nut two (22) is also screwed on the lower end of the gear shifting shaft (2).

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