CN210178839U - Loader gearbox first keeps off ring gear structure - Google Patents
Loader gearbox first keeps off ring gear structure Download PDFInfo
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- CN210178839U CN210178839U CN201920916179.3U CN201920916179U CN210178839U CN 210178839 U CN210178839 U CN 210178839U CN 201920916179 U CN201920916179 U CN 201920916179U CN 210178839 U CN210178839 U CN 210178839U
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Abstract
The utility model discloses a first-gear inner gear ring structure of a loader gearbox, which comprises a friction plate, a first-gear inner gear ring and a planet wheel; the first internal gear ring is provided with an external tooth form and an internal tooth form; during assembly, the outer tooth form is meshed with the tooth form of the friction plate, and the inner tooth form is meshed with the planet wheel, so that assembly limiting of the first-gear inner gear ring is realized; the outer tooth form of the first-gear inner gear ring is a solid tooth form, and the bottom of the tooth root of the outer tooth form is also provided with the lubricating oil hole so as to realize forced lubrication of the friction plate. The utility model discloses simple structure, preparation and maintenance cost are low, use safe and reliable, have solved among the prior art loader gearbox fretwork formula one and have kept off the ring gear external tooth profile and have leaded to the profile of tooth super poor because of processing heat treatment deformation, and then shave and match the friction disc profile of tooth and cause friction disc profile of tooth wearing and tearing and fracture and appear breaking at profile of tooth fretwork department under the heavy load operating mode and cause the problem that does not keep off the position.
Description
Technical Field
The utility model relates to a loader gearbox equipment, especially 5 tons of wheel loader gearboxes, concretely relates to loader gearbox keeps off ring gear structure one time.
Background
The planet gear type gearbox of the loader mainly comprises three gears of 2 front gears and 1 back gears, wherein the gear box moves forward and one gear serves as a working gear of the loader, the working condition of the gear directly influences whether the loader can normally work, and the inner gear ring of the first gear is a main part for power transmission of the moving forward and the first gear. The existing first-gear inner gear ring is composed of an inner tooth profile and an outer tooth profile, wherein the inner tooth profile is mainly meshed with a planet gear, and the outer tooth profile is meshed with a friction sheet tooth. Wherein the external tooth-shaped part adopts a tooth-shaped hollow structure to ensure good lubrication of the friction plate. The first-gear inner gear ring of the structure has the following defects: because the first-gear inner gear ring needs to be subjected to a carburizing and quenching process, the outer tooth profile of the hollow structure deforms after heat treatment, so that tooth profile parameters are out of tolerance, the out-of-tolerance outer tooth profile shaves the tooth profile of a reciprocating friction plate in the actual working process, so that the tooth profile of the friction plate is abraded and broken, and the hollow part of the tooth profile is broken under a heavy-load working condition to cause no gear fault, so that the transmission cannot work normally.
Disclosure of Invention
The utility model aims at overcoming above-mentioned defect, provide a simple structure, preparation and maintenance cost are low, use safe and reliable's a loader gearbox keeps off ring gear structure, solve among the prior art loader gearbox fretwork formula one keep off ring gear external tooth profile because of processing heat treatment deformation lead to the profile of tooth super poor, and then shave and match the friction disc profile of tooth and cause friction disc profile of tooth wearing and tearing and fracture and appear breaking and lead to the fact the problem of no fender position in profile of tooth fretwork department under the heavy load operating mode.
In order to achieve the above purpose, the utility model relates to a loader gearbox first gear ring gear structure, which comprises a friction plate, a first gear ring gear and a planet gear; the first internal gear ring is provided with an external tooth form and an internal tooth form; during assembly, the outer tooth form is meshed with the tooth form of the friction plate, and the inner tooth form is meshed with the planet wheel, so that assembly limiting of the first-gear inner gear ring is realized; the outer tooth form of the first-gear inner gear ring is a solid tooth form, and the bottom of the tooth root of the outer tooth form is also provided with the lubricating oil hole so as to realize forced lubrication of the friction plate.
The utility model relates to a loader gearbox first gear ring gear structure on the one hand cancels outer tooth form hollow out construction to increase the intensity between outer teeth and reduce the processing, heat treatment deformation, improves the tooth form precision, reduces the tooth form meshing wear, prolongs the tooth form life, improves the reliability of the gearbox on the basis of the hollow out type first gear ring gear structure of the existing loader gearbox; on the other hand, in order to ensure that the friction plate has enough lubrication, a lubricating oil hole is added at the bottom of the tooth root of the outer tooth form, and the friction plate can be well lubricated and cooled under the condition of ensuring the tooth form precision and the tooth form strength of the inner ring of the first gear, so that the dual effects of improvement are realized. In addition, the improved structure does not need to change a forging blank, the universality of the part blank is good, and the manufacturing cost is reduced.
By adopting the novel one-gear inner gear ring structure of the loader gearbox, the problems that in the prior art, the tooth profile is out of tolerance due to the fact that the hollow one-gear inner gear ring outer tooth profile of the loader gearbox deforms through processing and heat treatment, friction plate tooth profile abrasion and breakage are caused to matching friction plate tooth profile shaving during working, and the gearbox cannot normally work due to the fact that no gear exists due to the fact that breakage occurs at the hollow tooth profile position under a heavy-load working condition are solved, the reliability of the gearbox is improved, and the product three-pack service cost is reduced.
Drawings
Fig. 1 is the utility model discloses a loader gearbox first gear ring gear assembly structure owner is cut a section schematic diagram.
Fig. 2 is a left cross-sectional structural schematic diagram of the first-gear ring gear in fig. 1.
Reference numerals: friction plate 1, external tooth profile 2, lubricating oil hole 3, first-gear ring gear 4, internal tooth profile 5, planet wheel 6.
Detailed Description
The first-gear ring gear structure of the loader transmission of the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-2, the first-gear ring gear structure of the loader transmission case of the present invention includes a friction plate 1, a first-gear ring gear 4 and a planet wheel 6; the first-gear inner gear ring 4 is provided with an external tooth profile 2 and an internal tooth profile 5; during assembly, the external tooth profile 2 is meshed with the friction plate 1 in a tooth form, and the internal tooth profile 5 is meshed with the planet wheel 6, so that assembly limiting of the first-gear inner gear ring 4 is realized; the outer tooth profile 2 of the first-gear inner gear ring 4 is in a solid tooth form, and a lubricating oil hole 3 is further processed at the bottom of the tooth root of the outer tooth profile 2 so as to realize forced lubrication on the friction plate 1.
In the working process, as the inner cavity of the transmission running at high speed is filled with oil, the oil flows to the friction plate 1 through the lubricating oil hole 3 under the action of centrifugal force along with the rotation of the first-gear inner gear ring 4, and the friction plate 1 is subjected to forced lubrication.
Claims (1)
1. A first-gear inner gear ring structure of a loader gearbox comprises a friction plate, a first-gear inner gear ring and a planet wheel; the first internal gear ring is provided with an external tooth form and an internal tooth form; during assembly, the outer tooth form is meshed with the tooth form of the friction plate, and the inner tooth form is meshed with the planet wheel, so that assembly limiting of the first-gear inner gear ring is realized; the method is characterized in that: the outer tooth form of the first-gear inner gear ring is a solid tooth form, and a lubricating oil hole is further processed at the bottom of a tooth root of the outer tooth form so as to realize forced lubrication of the friction plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920916179.3U CN210178839U (en) | 2019-06-18 | 2019-06-18 | Loader gearbox first keeps off ring gear structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920916179.3U CN210178839U (en) | 2019-06-18 | 2019-06-18 | Loader gearbox first keeps off ring gear structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210178839U true CN210178839U (en) | 2020-03-24 |
Family
ID=69837900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920916179.3U Active CN210178839U (en) | 2019-06-18 | 2019-06-18 | Loader gearbox first keeps off ring gear structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210178839U (en) |
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2019
- 2019-06-18 CN CN201920916179.3U patent/CN210178839U/en active Active
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