Output sealing static ring device

Abstract

The utility model discloses an output sealing static ring device which comprises an output shaft and a box body, and a bearing is arranged between the output shaft and the box body. The sealing moving ring group is mounted on the output shaft; the sealing static ring group is mounted on the box body, and the sealing static ring group is in sealing fit with the sealing dynamic ring group; a space is formed among the bearing, the box body, the sealing moving ring group and the sealing static ring group; at least one first cavity is formed between the sealing faces of the sealing moving ring set and the sealing static ring set, a first oil inlet hole and an oil return hole are formed in the sealing static ring set, the first oil inlet hole is communicated with the first cavity and the space, the oil return hole is communicated with the first cavity and the space, and therefore the space, the first oil inlet hole, the first cavity and the oil return hole form a circulating oil return channel. The oil return device is efficient in sealing, the risk of oil leakage is reduced, and oil return smoothness is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, and particularly relates to an output sealing static ring device. Background Art

[0002] In the prior art, one or more oil seals and sealing rings are directly arranged between the gearbox housing and the through cover. When the oil quantity inside the housing accumulates to a certain degree, it will leak from the oil seal or the sealing ring, and the internal oil return is not smooth and is prone to accumulation. Content of the Utility Model

[0003] Aiming at the above problems of the existing output shaft sealing structure, the present invention aims to provide an output sealing static ring device, which has efficient sealing, reduces the risk of oil leakage, and improves the smoothness of oil return.

[0004] The specific technical solutions are as follows:

[0005] An output sealing static ring device, comprising: an output shaft and a housing, wherein a bearing is arranged between the output shaft and the housing;

[0006] A sealing dynamic ring group, which is installed on the output shaft;

[0007] A sealing static ring group, which is installed on the housing, and the sealing static ring group is in sealing cooperation with the sealing dynamic ring group;

[0008] Wherein, a space is formed among the bearing, the housing, the sealing dynamic ring group and the sealing static ring group;

[0009] At least one first cavity is formed between the sealing surfaces of the sealing dynamic ring group and the sealing static ring group. The sealing static ring group is provided with a first oil inlet hole and an oil return hole respectively. The first oil inlet hole communicates the first cavity with the space, and the oil return hole communicates the first cavity with the space, so that a circulating oil return channel is formed among the space, the first oil inlet hole, the first cavity and the oil return hole.

[0010] In the above output sealing static ring device, at least one first ring groove is arranged on the sealing dynamic ring group, the first ring groove is located in the first cavity, and one end of the oil return hole faces the first ring groove.

[0011] In the above output sealing static ring device, the first ring groove is serrated.

[0012] In the above output sealing static ring device, at least one second cavity is formed between the sealing surfaces of the sealing static ring group and the sealing dynamic ring group, and a second oil inlet hole communicating the first cavity with the second cavity is arranged in the sealing static ring group.

[0013] The above-mentioned output seal stationary ring device, wherein a part of the seal dynamic ring group is fixed on the output shaft, and the other part of the seal dynamic ring group extends towards the space between the bearing and the seal stationary ring group.

[0014] The above-mentioned output seal stationary ring device, wherein the seal stationary ring group includes: a through cover and a seal stationary ring. The through cover is installed on the box body, the seal stationary ring is installed on the through cover, and the seal stationary ring is in sealing cooperation with the seal dynamic ring group.

[0015] The above-mentioned output seal stationary ring device, wherein a first cavity is formed between the sealing surface of the seal stationary ring and the seal dynamic ring group.

[0016] The above-mentioned output seal stationary ring device, wherein the seal dynamic ring group includes: a first seal dynamic ring and a second seal dynamic ring. The first seal dynamic ring is installed on the output shaft, the seal stationary ring is in sealing cooperation with the first seal dynamic ring, the second seal dynamic ring is fixed on the first seal dynamic ring, and the second seal dynamic ring is located in the space.

[0017] The above-mentioned output seal stationary ring device, wherein a sealing ring is provided between the seal dynamic ring group and the output shaft.

[0018] The above-mentioned output seal stationary ring device, wherein a spacer is provided between the bearing and the through cover.

[0019] The positive effects of the above technical solution compared with the prior art are:

[0020] When the seal dynamic ring group and the seal stationary ring group of the present utility model are in sealing cooperation, at least one first cavity is further provided to accommodate excess lubricating oil, prevent lubricating oil leakage, and minimize the risk of oil leakage.

[0021] At least one second cavity is further provided between the seal dynamic ring group and the seal stationary ring group of the present utility model to further accommodate excess lubricating oil, prevent lubricating oil leakage, and minimize the risk of oil leakage.

[0022] A first oil inlet hole and an oil outlet hole communicating with the space are provided on the seal stationary ring group of the present utility model. The space, the first oil inlet hole, the first cavity and the oil return hole form a circulating oil return channel, and the oil return is smooth to prevent accumulation. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the overall structure of an output seal stationary ring device of the present utility model;

[0024] Figure 2 It is an enlarged view of the structure at A of an output seal stationary ring device of the present utility model;

[0025] In the drawings: 1. Output shaft; 2. Housing; 3. Dynamic seal ring group; 4. Static seal ring group; 5. Bearing; 6. Space; 7. First cavity; 8. Second cavity; 9. First ring groove; 10. Sealing ring; 11. First oil inlet hole; 12. Oil return hole; 13. Second oil inlet hole; 14. Through hole; 15. Static ring oil outlet hole; 16. Cover oil outlet hole; 17. Second ring groove; 31. First dynamic seal ring; 32. Second dynamic seal ring; 33. Cylindrical pin; 41. Cover; 42. Static seal ring; 43. First cover; 44. Second cover; 45. Spacer ring; 46. Concave cavity. Detailed implementation manners

[0026] The present utility model will be further described below in conjunction with the drawings and specific embodiments, but it is not intended to limit the present utility model.

[0027] As Figure 1 and Figure 2 shown, there is shown an output static seal ring device of a preferred embodiment, including: an output shaft 1, a housing 2, a dynamic seal ring group 3 and a static seal ring group 4. A bearing 5 is provided between the output shaft 1 and the housing 2. The dynamic seal ring group 3 is installed on the output shaft 1, the static seal ring group 4 is installed on the housing 2, and the static seal ring group 4 is in sealing cooperation with the dynamic seal ring group 3.

[0028] Further, as a preferred embodiment, a space 6 is formed among the bearing 5, the housing 2, the dynamic seal ring group 3 and the static seal ring group 4.

[0029] Further, as a preferred embodiment, at least one first cavity 7 is formed between the sealing surfaces of the dynamic seal ring group 3 and the static seal ring group 4. The static seal ring group 4 is provided with a first oil inlet hole 11 and an oil return hole 12 respectively. The first oil inlet hole 11 communicates the first cavity 7 with the space, and the oil return hole 12 communicates the first cavity 7 with the space 6, so that a circulating oil return channel is formed among the space 6, the first oil inlet hole 11, the first cavity 7 and the oil return hole 12.

[0030] Preferably, the dynamic seal ring group 3 and the static seal ring group 4 are in clearance fit, and the clearance amount is 0.1 mm.

[0031] The above are only preferred embodiments of the present utility model, and do not limit the implementation manners and protection scope of the present utility model accordingly.

[0032] The present utility model further has the following implementation manners on the above basis:

[0033] In a further embodiment of the present utility model, please continue to refer to Figure 1 and Figure 2 shown, at least one first ring groove 9 is provided on the dynamic seal ring group 3. The first ring groove 9 is located in the first cavity 7, and one end of the oil return hole 12 faces the first ring groove 9.

[0034] In a further embodiment of the present utility model, the first annular groove 9 is serrated.

[0035] In a further embodiment of the present utility model, at least one second cavity 8 is formed between the sealing surfaces of the static sealing ring group 4 and the dynamic sealing ring group 3, and a second oil inlet hole 13 communicating the first cavity 7 and the second cavity 8 is provided in the static sealing ring group.

[0036] Preferably, the first cavity 7 is located between the bearing 5 and the second cavity 8.

[0037] Preferably, when two first cavities 7 are provided in the static sealing ring group 4, the two first cavities 7 are communicated through a through hole 14.

[0038] In a further embodiment of the present utility model, a part of the dynamic sealing ring group 3 is fixed to the output shaft 1, and another part of the dynamic sealing ring group 3 extends towards the space between the bearing 5 and the static sealing ring group 4.

[0039] In a further embodiment of the present utility model, the static sealing ring group 4 includes: a transparent cover 41 and a static sealing ring 42. The transparent cover 41 is installed on the box body 2, the static sealing ring 42 is installed on the transparent cover 41, and the static sealing ring 42 is in sealing cooperation with the dynamic sealing ring group 3.

[0040] In a further embodiment of the present utility model, a first cavity 7 and a second cavity 8 are formed between the sealing surfaces of the static sealing ring 42 and the dynamic sealing ring group 3.

[0041] In a further embodiment of the present utility model, the dynamic sealing ring group 3 includes: a first dynamic sealing ring 31 and a second dynamic sealing ring 32. The first dynamic sealing ring 31 is installed on the output shaft 1, the static sealing ring 42 is in sealing cooperation with the first dynamic sealing ring 31, the second dynamic sealing ring 32 is fixed to the first dynamic sealing ring 31, and the second dynamic sealing ring 32 is located in the space 6.

[0042] Preferably, the transparent cover 41 includes a first transparent cover 43 and a second transparent cover 44 which are connected to each other. The first transparent cover 43 is installed on the box body 2, and the static sealing ring 42 is installed on the second transparent cover 44.

[0043] Preferably, the second transparent cover 44 extends towards the bearing 5.

[0044] Preferably, the first dynamic sealing ring 31 is fixed to the output shaft 1 by screws, and the static sealing ring 42 is fixed to the transparent cover 41 by screws.

[0045] Preferably, a concave cavity 46 is formed between the first transparent cover 43 and the second transparent cover 44, and the end of the second dynamic sealing ring 32 extends into the concave cavity 46.

[0046] Preferably, the oil outlet hole 12 includes: a stationary ring oil outlet hole 15 and a through cover oil outlet hole 16. One end of the stationary ring oil outlet hole 15 communicates with the first cavity 7, one end of the through cover oil outlet hole 16 communicates with the other end of the stationary ring oil outlet hole 15, the other end of the through cover oil outlet hole 16 communicates with the space 6, and one end of the stationary ring oil outlet hole 15 faces the first ring groove 9.

[0047] Preferably, the second through cover 44 supports and seals the side wall of the stationary ring 42.

[0048] Preferably, the oil outlet hole 12 is a stationary ring oil outlet hole. One end of the stationary ring oil outlet hole communicates with the first cavity 7, and the other end of the stationary ring oil outlet hole communicates with the space 6.

[0049] In a further embodiment of the present invention, a sealing ring 10 is provided between the sealing dynamic ring group 3 and the output shaft 1.

[0050] Preferably, a second ring groove 17 is provided on the inner circumference of the first sealing dynamic ring 31, and the sealing ring 10 is embedded in the second ring groove 17.

[0051] Preferably, the first sealing dynamic ring 31 and the second sealing dynamic ring 32 are fixedly connected by a cylindrical pin 33. There is a gap between the first sealing dynamic ring 31 and the second sealing dynamic ring 32, and this gap is located between the bearing 5 and the sealing ring 10.

[0052] In a further embodiment of the present invention, a spacer ring 45 is provided between the bearing 5 and the through cover 41.

[0053] Preferably, the spacer ring 45 abuts between the bearing 5 and the first through cover 43.

[0054] When the present invention is in a sealing fit between the sealing dynamic ring group 3 and the sealing stationary ring group 4, at least one first cavity 7 is further provided to accommodate excess lubricating oil, prevent lubricating oil leakage, and minimize the risk of oil leakage.

[0055] In the present invention, at least one second cavity 8 is further provided between the sealing dynamic ring group 3 and the sealing stationary ring group 4 to further accommodate excess lubricating oil, prevent lubricating oil leakage, and minimize the risk of oil leakage.

[0056] The present invention is provided with a first oil inlet hole 11 and an oil outlet hole 12 on the sealing stationary ring group 4 that communicate with the space 6. The space 6, the first oil inlet hole 11, the first cavity 7, and the oil return hole 12 form a circulating oil return channel, ensuring smooth oil return and preventing accumulation.

[0057] The above are only the preferred embodiments of the present utility model, and do not limit the implementation manners and protection scope of the present utility model. For those skilled in the art, it should be realized that all the solutions obtained by equivalent substitutions and obvious changes made by using the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An output sealing static ring device, characterized in that, Comprising: An output shaft and a housing, with a bearing provided between the output shaft and the housing; A sealing dynamic ring group, which is installed on the output shaft; A sealing static ring group, which is installed on the housing, and the sealing static ring group is in sealing cooperation with the sealing dynamic ring group; Wherein, a space is formed among the bearing, the housing, the sealing dynamic ring group and the sealing static ring group; At least one first cavity is formed between the sealing surfaces of the sealing dynamic ring group and the sealing static ring group. A first oil inlet hole and an oil return hole are provided on the sealing static ring group. The first oil inlet hole communicates the first cavity with the space, and the oil return hole communicates the first cavity with the space, so that the space, the first oil inlet hole, the first cavity and the oil return hole form a circulating oil return channel.

2. The output sealing stationary ring device according to claim 1, characterized in that, At least one first ring groove is provided on the sealing dynamic ring group. The first ring groove is located in the first cavity, and one end of the oil return hole faces the first ring groove.

3. The output sealing stationary ring device according to claim 2, characterized in that, The first ring groove is serrated.

4. The output seal stationary ring device according to claim 1, characterized in that, At least one second cavity is formed between the sealing surfaces of the sealing static ring group and the sealing dynamic ring group. A second oil inlet hole communicating the first cavity with the second cavity is provided in the sealing static ring group.

5. The output sealing stationary ring device according to claim 1, characterized in that, A part of the sealing dynamic ring group is fixed on the output shaft, and another part of the sealing dynamic ring group extends towards the space between the bearing and the sealing static ring group.

6. The output seal stationary ring device according to claim 2, characterized in that, The sealing static ring group includes: a transparent cover and a sealing static ring. The transparent cover is installed on the housing, the sealing static ring is installed on the transparent cover, and the sealing static ring is in sealing cooperation with the sealing dynamic ring group.

7. The output seal stationary ring device according to claim 6, characterized in that, The first cavity is formed between the sealing surfaces of the sealing static ring and the sealing dynamic ring group.

8. The output sealing static ring device according to claim 6, characterized in that, The sealing dynamic ring group includes: a first sealing dynamic ring and a second sealing dynamic ring. The first sealing dynamic ring is installed on the output shaft, the sealing static ring is in sealing cooperation with the first sealing dynamic ring, the second sealing dynamic ring is fixed on the first sealing dynamic ring, and the second sealing dynamic ring is located in the space.

9. The output seal stationary ring device according to claim 1, characterized in that A sealing ring is provided between the sealing dynamic ring group and the output shaft.

10. The output seal stationary ring device according to claim 6, characterized in that, A spacer is provided between the bearing and the transparent cover.

Images