CN103671920A - Caterpillar track assembly based on double-layer dry-type seal structure - Google Patents
Caterpillar track assembly based on double-layer dry-type seal structure Download PDFInfo
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- CN103671920A CN103671920A CN201210337518.5A CN201210337518A CN103671920A CN 103671920 A CN103671920 A CN 103671920A CN 201210337518 A CN201210337518 A CN 201210337518A CN 103671920 A CN103671920 A CN 103671920A
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- sealing unit
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- dry
- assembly based
- connecting end
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Abstract
The invention discloses a caterpillar track assembly based on a double-layer dry-type seal structure. The caterpillar track assembly comprises a primary sealing unit and a secondary sealing unit, wherein the primary sealing unit is arranged outside a pin roll (1), at the connecting position of a prior segment and a later segment and between an outer segment and a shaft sleeve (2) and the secondary sealing unit is arranged between the connecting end faces of the prior segment and the later segment and located at the position of the inner circle. The primary sealing unit comprises a steel sealing bush (4) of the inner circle and a polyurethane seal ring (5) of the outer circle. The secondary sealing unit comprises polyurethane seal rings which are arranged in the connecting end faces of the prior segment and the later segment respectively in an inlaid mode. In order to solve the problem that sediment enters a seal piece, the protective secondary sealing unit is additionally arranged between the connecting end faces of the prior segment and the later segment on the basis of steel lining dry-type seal, erosion, to the primary sealing unit, by the sediment is reduced to the maximum, so that the overall effective time of a sealing system is prolonged, and therefore the service life of a whole caterpillar 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 prior art, dry-type encapsulated for adding steel lining for wetland blockchain rail assembly sealing configuration, as shown in Figure 1-2: owing to adding steel lining 4 between seal ring 5 and bearing pin 1, limited seal ring 5 lateral overload extruding, just protected to a certain extent sealing validity.But, the chain rail of this kind of sealing is in the on-the-spot use of wetland car, Sealing cannot 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 is also very important to the wearing and tearing of Sealing simultaneously.In 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; front and back nodal plate connects the secondary seal that end increases protectiveness; lower to greatest extent the infringement of silt to primary seal; to extend the whole working lipe of sealing system, thereby extend 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, before and after also comprising, between two nodal plate connecting end surfaces, be positioned at inner ring place secondary seal unit is set.
Under 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 reserved 0.3-0.5mm gap.
Under optimum way, described secondary seal unit comprises the Polyurethane Wearing Ring being set at respectively in the two nodal plate connecting end surfaces of front and back.
The present invention, by second level sealing configuration is set, can effectively prevent the infringement of silt to first order sealing unit, thereby reach, extends sealing configuration working life, extends the whole chain rail object in working life.
Accompanying drawing explanation
Fig. 1 is the structural representation that in prior art chain rail assembly, nodal plate connects.
Fig. 2 is the structure for amplifying schematic diagram at A place in Fig. 1, there is shown sealing configuration.
Fig. 3 is the structural representation that in chain rail assembly of the present invention, nodal plate connects.
Fig. 4 is the structure for amplifying schematic diagram at B place in 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 arranges between outer nodal plate and axle sleeve 2, two nodal plate places, and between the two nodal plate connecting end surfaces of front and back, be positioned at inner ring place secondary seal unit be set.
Wherein, 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, between described outer nodal plate and described axle sleeve 2, under optimal way, is reserved 0.3-0.5mm gap.
In addition, as shown in Figure 4, secondary seal unit comprises the Polyurethane Wearing Ring being set at respectively in the two nodal plate connecting end surfaces of front and back.
The above; it is only preferably 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; according to technological scheme of the present invention and inventive concept thereof, be equal to replacement or changed, within all should being encompassed in protection scope of the present invention.
Claims (4)
1. the 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 arranging between outer nodal plate and axle sleeve (2), it is characterized in that, before and after also comprising, between two nodal plate connecting end surfaces, be positioned at inner ring place secondary seal unit is set.
2. the 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. the chain rail assembly based on the dry-type encapsulated structure of bilayer according to claim 1, is characterized in that, described steel seal cartridge (4) is positioned between described outer nodal plate and described axle sleeve (2), and reserved 0.3-0.5mm gap.
4. according to the arbitrary described chain rail assembly based on the dry-type encapsulated structure of bilayer of claim 1-3, it is characterized in that, described secondary seal unit comprises the Polyurethane Wearing Ring being 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 |
|---|---|---|---|
| CN201210337518.5A CN103671920A (en) | 2012-09-12 | 2012-09-12 | Caterpillar track assembly based on double-layer dry-type seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210337518.5A CN103671920A (en) | 2012-09-12 | 2012-09-12 | Caterpillar track assembly based on double-layer dry-type seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103671920A true CN103671920A (en) | 2014-03-26 |
Family
ID=50310330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210337518.5A Pending CN103671920A (en) | 2012-09-12 | 2012-09-12 | Caterpillar track assembly based on double-layer dry-type seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103671920A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855903A (en) * | 2022-04-29 | 2022-08-05 | 三一重机有限公司 | Connection structure of accessory and operation arm and operation machine |
-
2012
- 2012-09-12 CN CN201210337518.5A patent/CN103671920A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855903A (en) * | 2022-04-29 | 2022-08-05 | 三一重机有限公司 | Connection structure of accessory and operation arm and operation machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140326 |