CN204253812U - Bulldozer transfer case gear assembly structure - Google Patents
Bulldozer transfer case gear assembly structure Download PDFInfo
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- CN204253812U CN204253812U CN201420665703.1U CN201420665703U CN204253812U CN 204253812 U CN204253812 U CN 204253812U CN 201420665703 U CN201420665703 U CN 201420665703U CN 204253812 U CN204253812 U CN 204253812U
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- gear
- packing ring
- axle
- transfer case
- attrition
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Abstract
A kind of bulldozer transfer case gear assembly structure, its axle is bolted on transfer case housing, gear is assembled by the needle bearing be assemblied on axle, the anti-attrition packing ring made by hard material is installed between gear face and housing, described anti-wear gasket snare is connected to axle and is provided with rotation preventing mechanism, and described rotation preventing mechanism produces rotation for stoping gear to start the rear anti-attrition packing ring of running; Its advantage is when transfer case gear operation, gear face drives anti-attrition packing ring to rotate, when anti-attrition packing ring eliminate with the gap of axle ear after no longer rotate, now gear face and anti-attrition washer contacts produce friction, effectively avoids the direct contact friction between gear face and housing.Due to anti-attrition packing ring and gear surface hardness all higher, effectively reduce wear, because wearing and tearing, therefore the problem that causes is solved accordingly, improving product reliability thus.
Description
Technical field
The utility model relates to a kind of bulldozer transfer case gear assembly structure.
Background technique
In existing bulldozer transfer case gear assembly structure, axle is bolted on transfer case housing, and be protection needle bearing end face, two increases pad respectively, and gear is assembled by the needle bearing be assemblied on axle.
In former bulldozer transfer case gear assembly structure as shown in Figure 4; roller bearing needle-holding timing; although two ends add pad; but the pad increased just plays the effect of protection bearing face; and comparatively wide arc gap is still left at bearing two ends; so when pinion rotation, gear can, with needle bearing play, cause gear face to contact with housing direct friction.Because gear adopts carburizing and quenching process, hardness high (>=58HRC), and transfer case housing material is HT250, material softer (≤180HB), so cause housing comparatively quick-wearing, the iron filings produced because of wearing and tearing enter needle bearing again, cause the earlier period damage of needle bearing.Therefore, design a kind of novel gear assembly structure, avoid gear face and the direct contact wear of transfer case housing, improve product reliability, become very meaningful.
Model utility content
The purpose of this utility model is exactly to solve in bulldozer transfer case gear assembly structure, because harder gear face directly contacts with comparatively soft-shell direct friction, iron filings after causing housing to wear and tear enter needle bearing, cause the earlier period damage of needle bearing, cause the problem of product reliability difference and a kind of bulldozer transfer case gear assembly structure provided.
Solution of the present utility model is such:
A kind of bulldozer transfer case gear assembly structure, its axle is bolted on transfer case housing, gear is assembled by the needle bearing be assemblied on axle, it is characterized in that: the anti-attrition packing ring made by hard material is installed between gear face and housing, described anti-wear gasket snare is connected to axle and is provided with rotation preventing mechanism, and described rotation preventing mechanism rotates for stoping gear to start the rear anti-attrition packing ring of running.
Technological scheme also comprises more specifically: described rotation preventing mechanism is included in the groove that Axial and radial is arranged, and the projection that anti-attrition packing ring protrudes to center, projection forms rotation preventing mechanism with coordinating of groove.
Between gear face and housing due to increase by one by hard material (surface hardness and gear poor≤10%) the anti-attrition packing ring made; anti-attrition packing ring prevents from rotating by the ear on itself and axle; needle bearing two ends have corresponding protection, therefore cancel the pad at needle bearing two ends simultaneously.
The utility model has the advantages that when transfer case gear operation, gear face drives anti-attrition packing ring to rotate, when anti-attrition packing ring eliminate with the gap of axle ear after no longer rotate, now gear face and anti-attrition washer contacts produce friction, effectively avoids the direct contact friction between gear face and housing.Due to anti-attrition packing ring and gear surface hardness all higher, effectively reduce wear, because wearing and tearing, therefore the problem that causes is solved accordingly, improving product reliability thus.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model anti-attrition packing ring 2.
Fig. 3 is the utility model axle 3 end structure schematic diagram.
Fig. 4 is original bulldozer transfer case gear assembly structure schematic diagram.
Embodiment
As shown in Figure 1, axle 3 is bolted on transfer case housing 1, gear 5 is assembled by the needle bearing 4 be assemblied on axle 3, the anti-attrition packing ring 2 made by hard material is installed between gear 5 end face and housing 1, described anti-attrition packing ring 2 is socketed on axle 3 and is provided with rotation preventing mechanism, and described rotation preventing mechanism rotates for stoping gear 5 to start the rear anti-attrition packing ring 2 of running.
As shown in Figure 2,3, described rotation preventing mechanism is included in the groove formation ear that axle 3 radial direction is arranged, and the projection that anti-attrition packing ring 2 protrudes to center, projection forms rotation preventing mechanism with coordinating of groove.
After the gear assembly structure of the present embodiment completes assembling, when gear 5 rotates, anti-attrition packing ring 2 can be driven to rotate, after the mutual gap of anti-attrition packing ring 2 projection and axle 3 ear connected in star is eliminated, the ear of axle 3 serves the effect stoping anti-attrition packing ring 2 to move.Owing to carrying out direct contact friction without moving parts to housing 1, and anti-attrition packing ring 2 and gear 5 surface hardness all higher, effectively reduce the fretting wear in transfer case pts system.
Claims (2)
1. a bulldozer transfer case gear assembly structure, its axle (3) is bolted on transfer case housing (1), gear (5) is assembled by the needle bearing (4) be assemblied on axle (3), it is characterized in that: the anti-attrition packing ring (2) made by hard material is installed between gear (5) end face and housing (1), described anti-attrition packing ring (2) is socketed on axle (3) and is provided with rotation preventing mechanism, and described rotation preventing mechanism rotates for stoping gear (5) to start the rear anti-attrition packing ring (2) of running.
2. bulldozer transfer case gear assembly structure according to claim 1, it is characterized in that: described rotation preventing mechanism is included in the groove that axle (3) radial direction is arranged, the projection that anti-attrition packing ring (2) protrudes to center, projection forms rotation preventing mechanism with coordinating of groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420665703.1U CN204253812U (en) | 2014-11-10 | 2014-11-10 | Bulldozer transfer case gear assembly structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420665703.1U CN204253812U (en) | 2014-11-10 | 2014-11-10 | Bulldozer transfer case gear assembly structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204253812U true CN204253812U (en) | 2015-04-08 |
Family
ID=52958121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420665703.1U Active CN204253812U (en) | 2014-11-10 | 2014-11-10 | Bulldozer transfer case gear assembly structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204253812U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340351A (en) * | 2018-12-12 | 2019-02-15 | 中国北方发动机研究所(天津) | A kind of gear shaft structure with anti-attrition function |
-
2014
- 2014-11-10 CN CN201420665703.1U patent/CN204253812U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340351A (en) * | 2018-12-12 | 2019-02-15 | 中国北方发动机研究所(天津) | A kind of gear shaft structure with anti-attrition function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |