CN212407513U

CN212407513U - Sealed gear box

Info

Publication number: CN212407513U
Application number: CN202020470940.8U
Authority: CN
Inventors: 温年平
Original assignee: Yangzhou Yinzhou Machinery Co ltd
Current assignee: Yangzhou Yinzhou Machinery Co ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2021-01-26
Anticipated expiration: 2030-04-02

Abstract

The utility model belongs to the technical field of gear boxes, in particular to a sealed gear box; the high-speed rotating shaft seals the box body through an oil blocking sealing cover, and the oil blocking sealing cover is fixed on the box body through a long locking screw; the oil blocking sealing cover is sequentially provided with a first oil blocking groove, a second oil blocking groove, a third oil blocking groove, a fourth oil blocking groove and a fifth oil blocking groove, and the first oil blocking groove is close to the box body; an oil return groove is formed in the upper portion of the oil blocking sealing cover, one end of the oil return groove is communicated with the third oil blocking groove, and the other end of the oil return groove is communicated with the interior of the box body; and a first oil retainer and a second oil retainer are arranged on the high-speed rotating shaft, the first oil retainer is arranged between the first oil retaining groove and the second oil retaining groove, and the second oil retainer is arranged between the fourth oil retaining groove and the fifth oil retaining groove. The utility model discloses oil stream, oil mist flow and air current can be blocked well to the device, and the lubricating oil that spills over moreover is intercepted the back, can follow the oil gallery and get back to inside the box, can guarantee that the oil return is unobstructed to it is effectual to have good sealed.

Description

Sealed gear box

Technical Field

The utility model belongs to the technical field of the gear box, concretely relates to is sealed.

Background

Gearboxes are mechanical devices that transmit power and motion, and have a long history. The gear box is an indispensable part for most of machines due to the characteristics of large speed ratio, large transmission power, high reliability, accurate transmission ratio and the like. The transmission mechanism of the gearbox needs lubricating oil for lubrication so as to ensure the normal operation of the gearbox and prolong the service life of the gearbox. But the phenomenon of leakage of lubricating oil has also become a ubiquitous problem in the industry. The leakage of the lubricating oil directly affects the normal operation of the gear box, so that the improvement of the sealing performance of the gear box is an important research direction in the industry at present.

SUMMERY OF THE UTILITY MODEL

To the technical problem in the background art, the utility model provides a technical scheme of sealed gear box.

The utility model provides a following technical scheme:

a sealed gear box comprises a box body, a high-speed rotating shaft and an oil blocking sealing cover; the high-speed rotating shaft is rotatably arranged in the box body, one end of the high-speed rotating shaft extends out of the box body, the box body is sealed by the high-speed rotating shaft through the oil blocking sealing cover, and the oil blocking sealing cover is fixed on the box body through a long locking screw; the oil blocking sealing cover is sequentially provided with a first oil blocking groove, a second oil blocking groove, a third oil blocking groove, a fourth oil blocking groove and a fifth oil blocking groove, and the first oil blocking groove is close to the box body; an oil return groove is formed in the upper portion of the oil blocking sealing cover, one end of the oil return groove is communicated with the third oil blocking groove, and the other end of the oil return groove is communicated with the interior of the box body; the high-speed rotating shaft is provided with a first oil retainer ring and a second oil retainer ring, the sections of the first oil retainer ring and the second oil retainer ring are semicircular, the first oil retainer ring is arranged between the first oil retaining groove and the second oil retaining groove, and the second oil retainer ring is arranged between the fourth oil retaining groove and the fifth oil retaining groove.

Preferably, the end face of the oil blocking sealing cover connected with the box body is provided with a clamping body.

Preferably, the end face of the box body connected with the oil blocking sealing cover is provided with a groove matched with the clamping body.

Preferably, circular sealing rings are arranged in the grooves, and uniformly distributed mounting holes are formed in the circular sealing rings.

Preferably, the box body and the oil blocking sealing cover are made of metal materials, and the circular sealing ring is made of rubber materials.

The utility model has the advantages that: the one end of high-speed pivot is passed through and is kept off the oil seal board setting on the box to can keep off the lubricating oil that the post most splashes, through the cooperation of first fender oil groove, second fender oil groove and first oil slinger, can block oil stream, oil mist stream and air current well, the lubricating oil that spills over moreover is intercepted the back, can follow the oil gallery and get back to inside the box, can guarantee that the oil return is unobstructed, thereby it is effectual to have good sealed.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic cross-sectional view of the device of the present invention;

FIG. 2 is an enlarged partial schematic view at A of FIG. 1;

FIG. 3 is a schematic structural diagram of a circular sealing ring in the device of the present invention;

labeled as: 1. a box body; 2. a high-speed rotating shaft; 3. an oil blocking sealing cover; 4. a first oil retaining groove; 5. a second oil retaining groove; 6. a third oil retaining groove; 7. a fourth oil retaining groove; 8. a fifth oil retaining groove; 9. an oil return groove; 10. a first oil slinger; 11. a second oil retainer; 12. a card body; 13. a groove; 14. a long locking screw; 15. a circular seal ring; 151. and (7) installing holes.

Detailed Description

The conception, specific structure and technical effects of the present invention will be clearly and completely described below with reference to the embodiments and the accompanying drawings, so as to fully understand the objects, aspects and effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, the descriptions of the upper, lower, left, right, etc. used in the present invention are only relative to the mutual positional relationship of the components in the present invention in the accompanying drawings.

The following describes preferred embodiments of the present invention in detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, a sealed gear box includes a box body 1, a high-speed rotating shaft 2, and an oil-blocking sealing cover 3. The high-speed rotating shaft 2 is rotatably arranged in the box body 1, one end of the high-speed rotating shaft 2 is sleeved with parts such as a bearing, a gear and the like and is sealed in the box body 1, and the other end of the high-speed rotating shaft extends out of the box body 1. The high-speed rotating shaft 2 seals the box body 1 through the oil blocking sealing cover 3, and the oil blocking sealing cover 3 is fixed on the box body 1 through a long locking screw 14. The high-speed rotating shaft 2 generates a large amount of flying oil when rotating in the box body 1, and the oil on the shaft can be prevented from being thrown out through the oil blocking sealing cover 3.

When the high-speed rotating shaft 2 rotates at a high speed, a large amount of heat is generated, a large amount of oil mist is generated inside the box body 1, and the oil mist leaks from gaps, so that oil leakage is generated. The oil blocking sealing cover 3 is sequentially provided with a first oil blocking groove 4, a second oil blocking groove 5, a third oil blocking groove 6, a fourth oil blocking groove 7 and a fifth oil blocking groove 8, and the first oil blocking groove 4 is close to the box body 1; an oil return groove 9 is formed in the upper portion of the oil blocking sealing cover 3, one end of the oil return groove 9 is communicated with the third oil blocking groove 6, and the other end of the oil return groove 9 is communicated with the interior of the box body 1; the high-speed rotating shaft 2 is provided with a first oil slinger 10 and a second oil slinger 11, the sections of the first oil slinger 10 and the second oil slinger 11 are semicircular, the first oil slinger 10 is arranged between the first oil retaining groove 4 and the second oil retaining groove 5, and the second oil slinger 11 is arranged between the fourth oil retaining groove 7 and the fifth oil retaining groove 8. The oil flow, the oil mist flow and the like can be blocked by the oil blocking groove and the oil blocking ring.

The end face of the oil blocking sealing cover 3 connected with the box body 1 is provided with a clamping body 12. And a groove 13 matched with the clamping body 12 is arranged on the end surface of the box body 1 connected with the oil blocking sealing cover 3. Circular seal ring 15 is configured in groove 13, circular seal ring 15 is rubber material, be equipped with evenly distributed's mounting hole 151 on circular seal ring 15. The card body 12 and the groove 13 are in interference fit, the circular sealing ring 15 is placed in the groove 13, then the card body 12 on the oil blocking sealing cover 3 is aligned to the groove 13, the card body 12 is inserted into the groove 13 with certain force, and the card body is fixed by the long locking screw 14.

Preferably, the box body 1 and the oil blocking sealing cover 3 are made of metal materials, so that the service life is long, and the production cost can be reduced.

The utility model discloses a concrete theory of operation:

when the high-speed rotating shaft 2 rotates in the gear box, a large amount of oil fly is generated by the lubricating oil in the gear box, and meanwhile, a large amount of heat is generated in the gear box, so that the lubricating oil forms oil mist, and leakage occurs. The oil blocking sealing cover 3 is arranged to enable a large amount of flying oil to be blocked inside the gear box, partial oil or oil mist can enter the second oil blocking groove 5 from the axial direction of the first oil blocking ring 10, oil flow, oil mist flow and air flow can be well blocked, external air flow and dust are blocked to enter the box body 1, overflowed lubricating oil can be intercepted, and the oil can return to the inside of the box body 1 from the oil return groove 9, so that the oil return is guaranteed to be smooth, and a good sealing effect is achieved. The fourth oil retaining groove 7 and the fifth oil retaining groove 8 are designed the same as the first oil retaining groove 4 and the second oil retaining groove 5, and the principle is the same.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealed gearbox is characterized by comprising a box body, a high-speed rotating shaft and an oil blocking sealing cover; the high-speed rotating shaft is rotatably arranged in the box body, one end of the high-speed rotating shaft extends out of the box body, the box body is sealed by the high-speed rotating shaft through the oil blocking sealing cover, and the oil blocking sealing cover is fixed on the box body through a long locking screw; the oil blocking sealing cover is sequentially provided with a first oil blocking groove, a second oil blocking groove, a third oil blocking groove, a fourth oil blocking groove and a fifth oil blocking groove, and the first oil blocking groove is close to the box body; an oil return groove is formed in the upper portion of the oil blocking sealing cover, one end of the oil return groove is communicated with the third oil blocking groove, and the other end of the oil return groove is communicated with the interior of the box body; the high-speed rotating shaft is provided with a first oil retainer ring and a second oil retainer ring, the sections of the first oil retainer ring and the second oil retainer ring are semicircular, the first oil retainer ring is arranged between the first oil retaining groove and the second oil retaining groove, and the second oil retainer ring is arranged between the fourth oil retaining groove and the fifth oil retaining groove.

2. The sealed gearbox as recited in claim 1, wherein a clip is disposed on an end surface of said oil-retaining sealed cover connected to said casing.

3. The sealed gearbox as recited in claim 2, wherein a groove matching with said card body is provided on an end surface of said box body connected to said oil-blocking sealing cover.

4. The sealed gearbox as recited in claim 3, wherein said groove is configured with a circular sealing ring, said circular sealing ring having uniformly distributed mounting holes.

5. The sealed gearbox as recited in claim 4, wherein said housing and said oil-retaining seal cover are made of metal material, and said circular seal ring is made of rubber material.