CN219388579U

CN219388579U - Gear box output shaft sealing device

Info

Publication number: CN219388579U
Application number: CN202320497227.6U
Authority: CN
Inventors: 陈新锐; 沈平洋; 黄宇; 吴明
Original assignee: Jiangsu Guomao Reducer Group Co ltd
Current assignee: Jiangsu Guomao Reducer Group Co ltd
Priority date: 2023-03-15
Filing date: 2023-03-15
Publication date: 2023-07-21
Anticipated expiration: 2033-03-15

Abstract

The utility model relates to the technical field of output shaft sealing, in particular to a gear box output shaft sealing device, which comprises a sealing piece positioned between an output shaft body and a box body, wherein the sealing piece comprises an oil retaining sleeve arranged on the outer side of the output shaft body, the oil retaining sleeve comprises an annular flat pad and an annular vertical pad, the annular vertical pad is arranged on the outer side of the annular flat pad, an oil retaining sleeve is arranged between the annular vertical pad and the output shaft body, and the length of the annular vertical pad is smaller than the height of the oil retaining sleeve. The utility model reduces the occurrence of oil leakage and oil seepage phenomenon of the output shaft in the running process and improves the sealing performance.

Description

Gear box output shaft sealing device

Technical Field

The utility model relates to the technical field of output shaft sealing, in particular to a gearbox output shaft sealing device.

Background

When the output shaft of the existing vertical installation gearbox is downward, oil leakage and seepage phenomenon can occur, and once oil leakage and seepage occur, the lubricating oil can pollute the production raw materials of users, so that huge economic losses are generated for the users.

The vertical special speed reducer without oil leakage is disclosed in the 3 rd month 1 st 2017 as a publication number CN207740398U, and comprises an upper box body, a lower box body, an input shaft provided with a driving gear, an output shaft provided with a driven gear, a driving gear for driving the output shaft to output through the driven gear, a dry well sleeve fixed in the lower box body in a sealing way, wherein the driven gear is connected with the output shaft through a supporting arm, the supporting arm comprises a gear connecting part connected with the spoke end face of the driven gear, an output shaft connecting part connected with the output shaft and a transition part for connecting the gear connecting part and the output shaft connecting part, the gear connecting part, the output shaft connecting part and the transition part form a groove with downward openings, the upper end of the dry well sleeve is arranged in the groove, the lower end of the output shaft connecting part is arranged in the inner diameter of the dry well sleeve, and a first oil seal component is arranged between the output shaft connecting part and the inner wall of the dry well sleeve, so that oil leakage is reduced; however, the applicant found that the application was sealed only by an oil seal, and the sealing performance was not good enough.

Disclosure of Invention

In view of the above, the present utility model aims to provide a sealing device for an output shaft of a gear box, so as to solve the problem of poor sealing performance.

Based on the above object, the utility model provides a sealing device for an output shaft of a gear box, which comprises a sealing piece positioned between an output shaft body and a box body, wherein the sealing piece comprises an oil blocking sleeve arranged on the outer side of the output shaft body, the oil blocking sleeve comprises an annular flat pad and an annular vertical pad, the annular vertical pad is arranged on the outer side of the annular flat pad, an oil blocking sleeve is arranged between the annular vertical pad and the output shaft body, and the length of the annular vertical pad is smaller than the height of the oil blocking sleeve.

Optionally, the annular flat pad of the oil retaining sleeve is connected with the output shaft body through a flat key.

Optionally, the annular flat pad and the annular vertical pad are integrally formed.

Optionally, the oil separation sleeve is connected with the box body through an asbestos pad.

Optionally, the asbestos pad is connected with the box body and the oil separation sleeve through screws.

Optionally, the connector department of output shaft body and box is provided with the lid that permeates, permeate the lid through the oil blanket with output shaft body coupling, permeate the lid and be located the below of oil removal cover.

Optionally, a cavity is arranged between the oil separation sleeve and the transparent cover, a bearing sleeved on the output shaft body is arranged in the cavity, the cavity is used for injecting lubricating grease, a grease nipple communicated with the cavity is arranged on the box body, and the lubricating grease is injected into the cavity through the grease nipple.

Optionally, the grease nipple is arranged on the box body through a transition block.

Optionally, the grease nipple is communicated with the cavity through a copper tube.

Optionally, two ends of the copper tube are respectively connected with the transition block and the transparent cover through two pipe joints.

The utility model has the beneficial effects that: according to the sealing device for the output shaft of the gearbox, when the output shaft of the gearbox body works downwards, the oil separation sleeve and the oil separation sleeve at the output shaft seal lubricating oil, so that the occurrence of oil leakage and oil seepage phenomena of the output shaft in the running process is reduced, and the sealing performance is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

fig. 2 is an enlarged schematic structural view at a in fig. 1.

In the figure: 1. a case; 2. a transparent cover; 3. a bearing; 4. an oil blocking sleeve; 5. an oil separation sleeve; 6. an asbestos pad; 7. a flat key; 8. an output shaft body; 9. a transition block; 10. an oil seal; 11. an elongated oil pointer; 12. a grease nipple; 13. a pipe joint; 14. copper pipe.

Description of the embodiments

The present utility model will be further described in detail below with reference to specific embodiments and with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent.

It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present utility model should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present utility model belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

As shown in fig. 1 and 2, the sealing device for the output shaft of the gearbox comprises a sealing piece located between an output shaft body 8 and a box body 1, wherein the sealing piece comprises an oil retaining sleeve 4 arranged on the outer side of the output shaft body, the oil retaining sleeve 4 comprises an annular flat pad and an annular vertical pad, the outer side of the annular flat pad is provided with the annular vertical pad, an oil retaining sleeve 5 is arranged between the annular vertical pad and the output shaft body, and the length of the annular vertical pad is smaller than the height of the oil retaining sleeve 5.

When the output shaft 8 of the box body 1 works downwards, the oil separation sleeve 5 and the oil separation sleeve 4 at the output shaft 8 seal lubricating oil, so that the oil leakage and oil seepage phenomenon of the output shaft 8 in the running process is reduced, and the sealing performance is improved.

The annular flat pad of the oil retaining sleeve 4 is connected with the output shaft body 8 through a flat key 7, and the oil retaining sleeve 4 is stably arranged between the output shaft body 8 and the box body 1.

The annular flat pad and the annular vertical pad are integrally formed.

The oil separation sleeve 5 is connected with the box body 1 through an asbestos pad 6, so that the sealing performance is improved.

The asbestos pad 6 is connected with the tank 1 and the oil separation sleeve 5 by screws.

The oil seal box is characterized in that a transparent cover 2 is arranged at the connection port of the output shaft body 8 and the box body 1, the transparent cover 2 is connected with the output shaft body 8 through the oil seal 16, the transparent cover 2 is positioned below the oil separation sleeve 5, and the transparent cover 2 is connected with the box body 1 through a screw.

The grease trap is characterized in that a cavity is arranged between the grease trap 5 and the transparent cover 2, a bearing 3 sleeved on the output shaft body 8 is arranged in the cavity, the cavity is used for injecting grease, a grease nipple 12 communicated with the cavity is arranged on the box body 1, and the grease is injected into the cavity through the grease nipple 12, so that the sealing performance is improved.

The grease nipple 12 is arranged on the box body 1 through a transition block 9, the transition block 9 is connected with the box body 1 through a screw, and the grease nipple 12 is connected with the transition block 9 through the screw.

The grease nipple 12 is communicated with the cavity through the copper tube 14, so that the lubricating grease entering the grease nipple 12 can smoothly enter the cavity.

Two ends of the copper tube 14 are respectively connected with the transition block 9 and the transparent cover 2 through two tube joints 13.

The oil level measuring device is characterized in that an elongated oil level gauge 17 is arranged on the box body 1, the elongated oil level gauge 17 is connected with the box body 1 through a screw, the elongated oil level gauge 17 is arranged on an oil level measuring position on an oil tank on the box body 1, and the elongated oil level gauge 17 is used for observing the oil level, and the height difference between the oil level in the grease nipple 12 and the oil level in the elongated oil level gauge 17 is about 45 mm.

The box body 1 can be a vertical installation gearbox, when the output shaft 8 of the box body 1 works downwards, grease is injected into the box body through the grease nipple 12, so that the cavity is full of the grease, then the lubricating oil is added to the specified position of the long oil indicator 17, the oil level of the lubricating oil is lower than 20mm at the top of the oil separation sleeve 5, when the box body 1 operates, the oil separation sleeve 5 at the position of the output shaft 8 and the oil separation sleeve 4 form a first seal, the grease between the oil separation sleeve 5 and the bearing 3 forms a second seal, the oil seal 16 at the position of the transparent cover 15 forms a third seal, and the oil leakage phenomenon of the output shaft 8 without oil leakage in the operation process is guaranteed through the three seals, so that the sealing performance is improved.

Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the utility model is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the utility model, the steps may be implemented in any order and there are many other variations of the different aspects of the utility model as described above, which are not provided in detail for the sake of brevity.

The embodiments of the utility model are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides a gear box output shaft sealing device, its characterized in that, is including being located the sealing member between output shaft body and the box, the sealing member is including setting up the oil retaining cover in the output shaft body outside, the oil retaining cover includes annular flat pad and annular vertical pad, the annular flat pad outside is provided with the annular vertical pad, annular vertical pad with be provided with the oil retaining cover between the output shaft body, the length height that the annular vertical pad is less than the height of oil retaining cover.

2. A gearbox output shaft sealing arrangement as claimed in claim 1, wherein said annular flat pad of said oil retaining sleeve is connected to said output shaft body by a flat key.

3. A gearbox output shaft sealing arrangement as claimed in claim 1, wherein the annular flat pad and annular vertical pad are integrally formed.

4. A gearbox output shaft sealing arrangement according to claim 1, wherein the oil separation sleeve is connected to the box body by an asbestos pad.

5. The gearbox output shaft sealing device according to claim 1, wherein a through cover is arranged at a connection port of the output shaft body and the box body, the through cover is connected with the output shaft body through an oil seal, and the through cover is positioned below the oil separation sleeve.

6. The sealing device for the output shaft of the gearbox according to claim 5, wherein a cavity is arranged between the oil separation sleeve and the transparent cover, a bearing sleeved on the output shaft body is arranged in the cavity, the cavity is used for injecting lubricating grease, a grease nipple communicated with the cavity is arranged on the box body, and the lubricating grease is injected into the cavity through the grease nipple.

7. A gearbox output shaft sealing arrangement as claimed in claim 6, wherein the grease nipple is provided on the housing by means of a transition block.

8. A gearbox output shaft sealing arrangement according to claim 7, wherein the grease nipple communicates with the cavity via a copper tube.

9. The gearbox output shaft sealing device according to claim 8, wherein two ends of the copper pipe are respectively connected with the transition block and the transparent cover through two pipe joints.