CN112762174A - Floating sealing structure - Google Patents
Floating sealing structure Download PDFInfo
- Publication number
- CN112762174A CN112762174A CN202110037267.8A CN202110037267A CN112762174A CN 112762174 A CN112762174 A CN 112762174A CN 202110037267 A CN202110037267 A CN 202110037267A CN 112762174 A CN112762174 A CN 112762174A
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- CN
- China
- Prior art keywords
- floating
- sealing ring
- ring
- oil seal
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
- F16J15/344—Pressing means the pressing force being applied by means of an elastic ring supporting the slip-ring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3464—Mounting of the seal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3496—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member use of special materials
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to a floating sealing structure, and belongs to the technical field of hydraulic components. A floating sealing structure is arranged between a motor shell of the walking motor reducer and the inner gear ring; the device comprises a floating oil seal, a first sealing ring and an angular contact ball bearing; a floating oil seal is arranged in the motor shell, and an angular contact ball bearing is arranged in the inner gear ring; and a first sealing ring is arranged between the floating oil seal and the inner gear ring. The floating sealing structure adopts a sealing structure mode of combining a single floating oil seal and a sealing ring, so that the size of the floating sealing structure is effectively reduced; the sealing ring manufactured by adopting the special copper alloy material has the advantages of high strength, high temperature resistance, wear resistance, high friction resistance, corrosion resistance, good manufacturability, easy processing, low price, small specific gravity and the like, and effectively overcomes the defects of poor corrosion resistance, poor heat conductivity, high hardness, high brittleness, poor manufacturability, difficult processing and high price of the floating oil seal sealing ring manufactured by adopting a biplate alloy cast iron material in the floating sealing structure in the prior art.
Description
Technical Field
The invention relates to a floating sealing structure, and belongs to the technical field of hydraulic components.
Background
At present, a pair of symmetric elastic load ring floating seal structures is mostly adopted in a traveling motor reducer generally used in engineering machinery such as an excavator. Since the engineering machinery equipment is usually required to operate in a wearing medium with dust, sand, mud, rocks, soil and the like; therefore, the requirements on the wear resistance, the heat dissipation and the sealing performance of the sealing structure are extremely high, the requirements on the sealing of the elastic load ring and the metal sealing ring are extremely high, the requirements on the material performance and the processing of parts are high, the manufacturing cost is high, and the requirement on the installation space is large. For the miniature traveling motor speed reducer with extremely small space size, the conventional floating oil seal sealing structure is difficult to realize in a small space. At present, the technical field needs a floating sealing structure with good wear resistance, good heat dissipation, stable and reliable sealing performance, compact structure and low manufacturing cost, so as to solve the technical problems that the existing floating oil seal sealing structure is difficult to install in a small space and has poor heat dissipation because the size space of a walking motor speed reducer is small.
Disclosure of Invention
The invention aims to solve the technical problems that the existing floating oil seal sealing structure is difficult to install in a small space of a miniature traveling motor speed reducer and has poor heat dissipation performance.
In order to solve the problems, the technical scheme adopted by the invention is to provide a floating sealing structure, wherein the floating sealing structure is arranged between a motor shell and an inner gear ring of a walking motor reducer; the device comprises a floating oil seal, a first sealing ring and an angular contact ball bearing; a floating oil seal is arranged in the motor shell, and an angular contact ball bearing is arranged in the inner gear ring; and a first sealing ring is arranged between the floating oil seal and the inner gear ring.
Preferably, a bearing seat cavity and a sealing ring seat cavity are arranged inside the inner gear ring.
Preferably, an angular contact ball bearing is arranged in the bearing seat cavity; and a first sealing ring is arranged in the sealing ring seat cavity.
Preferably, the floating oil seal is provided with a single-piece structure; the floating oil seal comprises an elastic load O-shaped ring and a metal sealing ring II; the metal sealing ring two is connected with the inner wall of the motor shell through an elastic load O-shaped ring.
Preferably, an end face matching surface is arranged between the first sealing ring and the second metal sealing ring.
Preferably, a sealing ring groove is formed between the first sealing ring and the inner gear ring, and a sealing ring is arranged in the sealing ring groove.
Preferably, a retainer ring is arranged between the angular contact ball bearing and the motor shell.
Preferably, the first sealing ring is made of a copper alloy material.
Compared with the prior art, the invention has the following beneficial effects:
the floating sealing structure adopts a sealing structure mode of combining a single floating oil seal and a sealing ring, and compared with the traditional floating sealing structure, the floating sealing structure has the advantages that: 1. the size of the floating sealing structure is effectively reduced by adopting the single floating oil seal, and the problem that the floating oil seal sealing structure in the prior art is difficult to realize in a small space, such as a miniature walking motor speed reducer, is solved; 2. the sealing ring made of the special copper alloy material has high thermal conductivity; is in sealing fit with the floating oil seal; the sealing ring made of the special copper alloy material has the advantages of high strength, high temperature resistance, wear resistance, high friction reduction, corrosion resistance, good manufacturability, easiness in processing, low price, small specific gravity and the like, and effectively overcomes the defects that the existing floating sealing structure is a floating oil seal made of a double-piece alloy cast iron material, the sealing ring is poor in corrosion resistance, poor in heat conductivity, high in hardness, large in brittleness, poor in manufacturability, difficult to process and high in price.
Drawings
FIG. 1 is a schematic structural view of a prior art floating seal arrangement;
FIG. 2 is a schematic structural view of a floating seal structure according to the present invention;
reference numerals: 1. a motor housing; 2. floating oil seal; 2-1, floating oil seal O-shaped ring; 2-2, floating oil seal metal seal ring II; an O-shaped sealing ring; 4. a first sealing ring; 5. angular contact ball bearings; 6. an inner gear ring; 7. and a retainer ring.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings:
as shown in fig. 1-2, the present invention provides a floating seal structure, which is provided between a motor housing 1 and an inner gear ring 6 of a traveling motor reducer; the device comprises a floating oil seal 2, a first sealing ring 4 and an angular contact ball bearing 5; a floating oil seal 2 is arranged in the motor shell 1, and an angular contact ball bearing 5 is arranged in the inner gear ring 6; and a first sealing ring 4 is arranged between the floating oil seal 2 and the inner gear ring 6. And a bearing seat cavity and a sealing ring seat cavity are arranged in the inner gear ring 6. An angular contact ball bearing 5 is arranged in the bearing seat cavity; and a first sealing ring 4 is arranged in the sealing ring seat cavity. The floating oil seal 2 is designed into a single-piece structure; the floating oil seal comprises an elastic load floating oil seal O-shaped ring 2-1 and a metal sealing ring II 2-2; and the second metal sealing ring 2-2 is connected with the inner wall of the motor shell 1 through an elastic load floating oil seal O-shaped ring 2-1. An end face matching surface is arranged between the first sealing ring 4 and the second metal sealing ring 2-2. And a sealing ring groove is arranged between the first sealing ring 4 and the inner gear ring 6, and an O-shaped sealing ring 3 is arranged in the sealing ring groove. A retainer ring 7 is provided between the angular ball bearing 5 and the motor housing 1. The first sealing ring 4 is made of a copper alloy material.
As shown in fig. 1-2, the invention provides a floating sealing structure, which comprises a motor shell 1, a floating oil seal 2, a first sealing ring 4, an inner gear ring 6 and an angular contact ball bearing 5; the motor shell 1 is provided with a floating oil seal groove, the end part of the inner cavity of the inner gear ring 6 is provided with a sealing ring seat cavity, the motor shell 1 is connected with the inner gear ring 6 through a single floating oil seal 2 and a single sealing ring 4, an O-shaped sealing ring 3 is arranged between the sealing ring 4 and the inner gear ring 6, the middle part of the inner cavity of the inner gear ring 6 is provided with a bearing seat cavity, a steel ball ring groove is arranged on the bearing seat cavity, an angular contact ball bearing 5 is connected with the inner gear ring 6 and is axially fixed through a steel ball, the inner gear ring 6 is connected with the.
The floating sealing structure provided by the invention adopts the end faces of the single floating oil seal 2 and the first sealing ring 4 to be matched and sealed; when the sealing ring works, the first sealing ring 4 and the inner gear ring 6 are connected together to rotate and are set as a movable ring; the floating oil seal 2 and the floating oil seal groove of the motor shell 1 are connected into a static ring, and the two rings are connected in a matched manner through the precisely ground surface to form a mechanical end face seal for preventing oil leakage; the O-shaped ring 2-1 of the floating oil seal is an elastic load ring, provides load for the metal sealing ring II 2-2 of the floating oil seal, and is used as static seal between the motor shell 1 and the metal sealing ring II 2-2, so that a static and dynamic seal is created on a contact surface between the two sealing rings; the O-shaped ring 2-1 of the floating oil seal is matched with a groove of the inner cavity of the motor shell 1, and the O-shaped sealing ring 3 is arranged between the first sealing ring 4 and the inner gear ring 6, so that oil is effectively prevented from leaking from the groove of the inner cavity of the motor shell 1 and the wall of the inner cavity of the inner gear ring 6, and external soil and sand are effectively prevented from entering the motor and the inside of the speed reducer to cause damage and oil leakage; the first sealing ring 4 is made of special copper alloy materials and has the advantages of high strength, high temperature resistance, wear resistance, high friction reduction and good heat dissipation. The overall seal structure is significantly reduced in size and lighter in weight with reduced specific gravity. The single-chip floating oil seal 2 and the first sealing ring 4 are matched for use, so that the space required to be installed in the speed reducer is effectively reduced, and the weight of the speed reducer is reduced.
While the invention has been described with respect to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Those skilled in the art can make various changes, modifications and equivalent arrangements, which are equivalent to the embodiments of the present invention, without departing from the spirit and scope of the present invention, and which may be made by utilizing the techniques disclosed above; meanwhile, any changes, modifications and variations of the above-described embodiments, which are equivalent to those of the technical spirit of the present invention, are within the scope of the technical solution of the present invention.
Claims (8)
1. A floating sealing structure is provided, a floating sealing structure is arranged between a motor shell and an inner gear ring of a walking motor reducer; the method is characterized in that: the device comprises a floating oil seal, a first sealing ring and an angular contact ball bearing; a floating oil seal is arranged in the motor shell, and an angular contact ball bearing is arranged in the inner gear ring; and a first sealing ring is arranged between the floating oil seal and the inner gear ring.
2. A floating seal arrangement according to claim 1, wherein: and a bearing seat cavity and a sealing ring seat cavity are arranged in the inner gear ring.
3. A floating seal arrangement according to claim 2, wherein: an angular contact ball bearing is arranged in the bearing seat cavity; and a first sealing ring is arranged in the sealing ring seat cavity.
4. A floating seal arrangement according to claim 3, wherein: the floating oil seal is of a single-chip structure; the floating oil seal comprises an elastic load O-shaped ring and a metal sealing ring II; the metal sealing ring two is connected with the inner wall of the motor shell through an elastic load O-shaped ring.
5. A floating seal arrangement according to claim 4, wherein: and an end face matching surface is arranged between the first sealing ring and the second metal sealing ring.
6. A floating seal arrangement according to claim 5, wherein: and a sealing ring groove is arranged between the first sealing ring and the inner gear ring, and a sealing ring is arranged in the sealing ring groove.
7. A floating seal arrangement according to claim 6, wherein: and a retainer ring is arranged between the angular contact ball bearing and the motor shell.
8. A floating seal arrangement according to claim 7, wherein: the first sealing ring is made of a copper alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110037267.8A CN112762174A (en) | 2021-01-12 | 2021-01-12 | Floating sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110037267.8A CN112762174A (en) | 2021-01-12 | 2021-01-12 | Floating sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112762174A true CN112762174A (en) | 2021-05-07 |
Family
ID=75701576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110037267.8A Pending CN112762174A (en) | 2021-01-12 | 2021-01-12 | Floating sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112762174A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916101A (en) * | 2021-09-13 | 2022-01-11 | 烟台艾迪液压科技有限公司 | Measuring method for controlling clearance of floating oil seal base cavity |
-
2021
- 2021-01-12 CN CN202110037267.8A patent/CN112762174A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916101A (en) * | 2021-09-13 | 2022-01-11 | 烟台艾迪液压科技有限公司 | Measuring method for controlling clearance of floating oil seal base cavity |
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