CN202851953U - Chain track assembly based on double-layer dry-type seal structure - Google Patents
Chain track assembly based on double-layer dry-type seal structure Download PDFInfo
- Publication number
- CN202851953U CN202851953U CN 201220463754 CN201220463754U CN202851953U CN 202851953 U CN202851953 U CN 202851953U CN 201220463754 CN201220463754 CN 201220463754 CN 201220463754 U CN201220463754 U CN 201220463754U CN 202851953 U CN202851953 U CN 202851953U
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- seal
- segment piece
- seal unit
- assembly based
- dry
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Abstract
The utility model discloses a chain track assembly based on a double-layer dry-type seal structure. The chain track assembly based on the double-layer dry-type seal structure comprises a primary seal unit and a secondary seal unit, wherein the primary seal unit is arranged outside a pin shaft (1), the a front-segment piece and a back-segment piece of the first seal unit are arranged between an outer-segment piece and a shaft sleeve (2), and the secondary seal unit is arranged between end surfaces of the front-segment piece and the back-segment piece and on an inner ring. The primary seal unit comprises a steel seal bushing (4) of the inner ring and a polyurethane seal ring (5) of the outer ring. The secondary seal unit comprises polyurethane sealing rings respectively arranged in connection end surfaces of the front-segment piece and the back-segment piece. A protective secondary seal is added on the end surfaces of the front-segment piece and the back-segment piece for the problem that silt enters searing elements, and based on steel liner dry-type seal., damage of silt to the primary seal is reduced to a maximum degree, overall effective time of a seal system is prolonged, and therefore service life of the whole chain track is prolonged.
Description
Technical field
The present invention relates to a kind of chain rail structure, more particularly, the sealing configuration that relates to wetland blockchain rail assembly improves.
Background technique
Under the prior art, be used for wetland blockchain rail assembly sealing configuration dry-type encapsulated for adding steel lining, shown in Fig. 1-2: owing to adding steel lining 4 between seal ring 5 and the bearing pin 1, limited the extruding of seal ring 5 lateral overloads, just protected to a certain extent sealing validity.But, the chain rail of this kind sealing is in the on-the-spot use of wetland car, Sealing can't be avoided contacting with the direct of silt, in the long-term using process of chain rail, silt inevitably enters in the groove of Sealing, accumulate to get off for a long time, tied up the extendable room of Sealing, silt also is very important to the wearing and tearing of Sealing simultaneously.Among the figure, label 2 is lining, and label 3 is annular seal groove.
Summary of the invention
The silt that the present invention is directed to Sealing enters problem; on the dry-type encapsulated basis of steel lining; the front and back nodal plate connects the secondary seal that the end increases protectiveness; lower to greatest extent silt to the infringement of primary seal; prolonging the whole working lipe of sealing system, thereby prolong the working life of whole chain rail.
In order to achieve the above object, the invention provides a kind of chain rail assembly based on the dry-type encapsulated structure of bilayer, comprise the primary seal unit that two nodal plate places, front and back, bearing pin outside arrange between outer nodal plate and axle sleeve, be positioned at the inner ring place between the two nodal plate connecting end surfaces before and after also comprising the secondary seal unit is set.
Under the optimal way, described primary seal unit comprises the steel seal cartridge of inner ring and the polyurethane sealing ring of outer ring.In addition, described steel seal cartridge is between described outer nodal plate and described axle sleeve, and reservation 0.3-0.5mm gap.
Under the optimum way, described secondary seal unit comprises the Polyurethane Wearing Ring that is set at respectively in the two nodal plate connecting end surfaces of front and back.
The present invention can effectively prevent silt to the infringement of first order sealing unit by second level sealing configuration is set, and prolongs sealing configuration working life, prolongs the whole chain rail purpose in working life thereby reach.
Description of drawings
Fig. 1 is the structural representation that nodal plate connects in the prior art chain rail assembly.
Fig. 2 is the structure for amplifying schematic diagram at A place among Fig. 1, there is shown sealing configuration;
Fig. 3 is the structural representation that nodal plate connects in the chain rail assembly of the present invention;
Fig. 4 is the structure for amplifying schematic diagram at B place among Fig. 3, there is shown sealing configuration.
Embodiment
As shown in Figure 3, the present invention is based on the chain rail assembly of double-deck dry-type encapsulated structure, comprise bearing pin 1 outside before and after the primary seal unit that between outer nodal plate and axle sleeve 2, arranges, two nodal plate places, and be positioned at the inner ring place between the two nodal plate connecting end surfaces of front and back the secondary seal unit be set.
Wherein, the primary seal unit comprises the steel seal cartridge 4 of inner ring and the polyurethane sealing ring 5 of outer ring.Steel seal cartridge 4 under the optimal way, is reserved the 0.3-0.5mm gap between described outer nodal plate and described axle sleeve 2.
In addition, as shown in Figure 4, the secondary seal unit comprises the Polyurethane Wearing Ring 8 that is set at respectively in the two nodal plate connecting end surfaces of front and back.
The above; only be the better embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technological scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (4)
1. chain rail assembly based on the dry-type encapsulated structure of bilayer, comprise that two nodal plate places, the outside front and back of bearing pin (1) are positioned at the primary seal unit that arranges between outer nodal plate and the axle sleeve (2), it is characterized in that, be positioned at the inner ring place between the two nodal plate connecting end surfaces before and after also comprising the secondary seal unit is set.
2. described chain rail assembly based on the dry-type encapsulated structure of bilayer according to claim 1 is characterized in that, described primary seal unit comprises the steel seal cartridge (4) of inner ring and the polyurethane sealing ring (5) of outer ring.
3. described chain rail assembly based on the dry-type encapsulated structure of bilayer according to claim 2 is characterized in that, described steel seal cartridge (4) is positioned between described outer nodal plate and the described axle sleeve (2), and reserves the 0.3-0.5mm gap.
4. arbitrary described chain rail assembly based on the dry-type encapsulated structure of bilayer is characterized in that according to claim 1-3, and described secondary seal unit comprises the Polyurethane Wearing Ring (8) that is set at respectively in the two nodal plate connecting end surfaces of front and back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220463754 CN202851953U (en) | 2012-09-12 | 2012-09-12 | Chain track assembly based on double-layer dry-type seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220463754 CN202851953U (en) | 2012-09-12 | 2012-09-12 | Chain track assembly based on double-layer dry-type seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202851953U true CN202851953U (en) | 2013-04-03 |
Family
ID=47983158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220463754 Expired - Fee Related CN202851953U (en) | 2012-09-12 | 2012-09-12 | Chain track assembly based on double-layer dry-type seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202851953U (en) |
-
2012
- 2012-09-12 CN CN 201220463754 patent/CN202851953U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20140912 |
|
| EXPY | Termination of patent right or utility model |