CN213419793U - Split type inner gear ring structure of large planetary gear box - Google Patents
Split type inner gear ring structure of large planetary gear box Download PDFInfo
- Publication number
- CN213419793U CN213419793U CN202022072749.0U CN202022072749U CN213419793U CN 213419793 U CN213419793 U CN 213419793U CN 202022072749 U CN202022072749 U CN 202022072749U CN 213419793 U CN213419793 U CN 213419793U
- Authority
- CN
- China
- Prior art keywords
- gear
- ring
- box
- box body
- steel plate
- 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.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 238000003466 welding Methods 0.000 claims abstract description 5
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 9
- 238000005266 casting Methods 0.000 abstract description 6
- 238000005242 forging Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 3
- 230000002411 adverse Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- General Details Of Gearings (AREA)
Abstract
The utility model discloses a split type ring gear structure of large-scale planetary gear case, its characterized in that: including ring gear, box, prevent changeing gear, plane steel sheet and coupling bolt nut, wherein: the outer side of the inner gear ring is in contact fit with the box body, the inner side of the inner gear ring is in fit with the anti-rotation gear, a planar steel plate is fixed in the box body, and the anti-rotation gear is fixedly connected with the planar steel plate through a connecting bolt and a connecting nut. The utility model discloses the device can solve the adverse effect that current whole forging ring gear manufacturing cost is high, the casting ring gear produces defect easily, welding ring gear quality is unstable and interference fit manufacturability is poor, lose efficacy easily.
Description
Technical Field
The utility model relates to a gear box field especially relates to a split type ring gear structure of large-scale planetary gear case.
Background
Planetary gearbox planetary mechanism is usually composed of sun shaft, planet wheel, ring gear, planet carrier, as shown in fig. 1: 6 is a large planetary gear box, 7 is an inner gear ring in the gear box, in the NGW type planetary mechanism with the inner gear ring fixed, the inner gear ring is meshed with the planetary gear in a functional way, and also plays a role of a box body frame of the gear box due to structural reasons.
The inner gear ring of the large planetary gear box has large volume and high bearing capacity, and the machining allowance of the inner gear ring of the integral forging is large and the material waste is serious in consideration of the factors of rigidity, external connection structure and the like of the gear box; meanwhile, the meshing part of the inner gear ring and the planet gear needs a material with better performance and is higher in price, and the integral forging piece means that the part which does not need higher performance as a structural part also adopts the same material, so that the manufacturing cost is higher.
The traditional method is to change the inner gear ring into a casting or adopt a split structure. The annular gear of the large gear box has larger volume, if the annular gear is made of castings, casting defects such as sand holes and sand inclusion are easy to occur, and the mechanical properties of the castings are inferior to those of forgings.
SUMMERY OF THE UTILITY MODEL
For the technical problem who exists among the solution above-mentioned prior art, the utility model provides a split type ring gear structure of large-scale planetary gear case.
Therefore the utility model discloses a split type ring gear structure of large-scale planetary gear case, its characterized in that: including ring gear, box, prevent changeing gear, plane steel sheet and coupling bolt nut, wherein: the outer side of the inner gear ring is in contact fit with the box body, the inner side of the inner gear ring is in fit with the anti-rotation gear, a planar steel plate is fixed in the box body, and the anti-rotation gear is fixedly connected with the planar steel plate through a connecting bolt and a connecting nut.
The utility model discloses the device can solve the adverse effect that current whole forging ring gear manufacturing cost is high, the casting ring gear produces defect easily, welding ring gear quality is unstable and interference fit manufacturability is poor, lose efficacy easily.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
fig. 1 is a schematic view of an annular gear of a conventional large planetary gear box, fig. 2 is a schematic view of the device of the present invention at a position of the large planetary gear box, and fig. 3 is an enlarged schematic view of a portion I in fig. 2.
Numerical description: 1-inner gear ring, 2-box body, 3-anti-rotation gear, 4-plane steel plate, 5-connecting bolt and nut, 6-current large planetary gear box, and 7-inner gear ring in the current gear box.
Detailed Description
To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the patent without making creative efforts, shall fall within the protection scope of the patent.
The technical solution provided by the embodiments of the present invention is described in detail below with reference to the accompanying drawings.
Referring to fig. 1, in the NGW planetary mechanism with fixed ring gear, the ring gear 7 in the present gearbox, in addition to being in operative engagement with the planet gears, also acts as the casing frame of the present large planetary gearbox 6 for structural reasons.
Referring to fig. 2 and 3, the device of the present invention is a split ring gear structure of a large planetary gear box, and includes a ring gear 1, a box body 2, an anti-rotation gear 3, a flat steel plate 4 and a coupling bolt and nut 5.
The outer side of the inner gear ring 1 is in contact fit with the box body 2, the inner side of the inner gear ring 1 is in fit with the anti-rotation gear 3, a plane steel plate 4 is fixed in the box body, and the anti-rotation gear 3 is fixedly connected with the plane steel plate 4 through a connecting bolt and a connecting nut 5.
The inner gear ring of the utility model adopts a split structure and is divided into two layers of the inner gear ring 1 and the box body 2, the inner gear ring 1 is meshed with the planet gear and adopts a material with higher performance; the box body 2 serves as a structural member and is made of a material which can be used inexpensively. Because the inner gear ring 1 bears a certain torque, the inner gear ring can rotate circumferentially in the box body, an anti-rotation gear 3 is additionally arranged, and a plane steel plate 4 is welded in the box body. The anti-rotation gear 3 is fixed with a plane steel plate 4 welded on the box body 2 through a connecting bolt and a nut 5, and is meshed with the inner gear ring 1 at the same time, so that the inner gear ring 1 is prevented from generating circumferential rotation when stressed.
The inner gear ring 1 is arranged in the box body 2, and in order to facilitate installation, the inner gear ring 1 and the box body 2 are in clearance fit, so that the problem of stress caused by interference assembly is solved.
The anti-rotation gear is connected with the plane steel plate 4 through a connecting bolt and a nut 5 and is fixed through a cylindrical pin, so that the anti-rotation gear 3 and the plane steel plate 4 cannot be displaced, meanwhile, the anti-rotation gear 3 is meshed with the inner gear ring 1, the gear ratio of the inner gear ring 1 to the anti-rotation gear 3 is 1:1, and the gear side clearance is reduced as much as possible, so that the box body 2 and the inner gear ring 1 are completely fixed together.
Compared with the prior art, the device of the utility model, have following advantage:
1. the inner gear ring is of a split structure, the inner gear ring is made of materials with high performance, and the box body is made of materials with low performance and low price, so that the material cost is reduced; 2. the inner gear ring has a simple structure, is a single gear ring structure, and the box body is a plane steel plate welding structure, so that the processing is simple, the manufacturability is good, and the manufacturing cost is reduced; 3. the inner gear ring and the box body are fixed through the anti-rotation gear, so that the quality problems of a welding structure and an interference structure in the manufacturing and assembling processes are avoided.
Claims (3)
1. The utility model provides a split type ring gear structure of large-scale planetary gear box which characterized in that: including ring gear, box, prevent changeing gear, plane steel sheet and coupling bolt nut, wherein: the outer side of the inner gear ring is in contact fit with the box body, the inner side of the inner gear ring is in fit with the anti-rotation gear, a planar steel plate is fixed in the box body, and the anti-rotation gear is fixedly connected with the planar steel plate through a connecting bolt and a connecting nut.
2. The split ring gear structure of the large planetary gearbox according to claim 1, wherein: the material performance of the inner gear ring is higher than that of the gear box.
3. The split ring gear structure of the large planetary gearbox according to claim 1, wherein: the plane steel plate is fixedly connected with the box body in a welding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022072749.0U CN213419793U (en) | 2020-09-21 | 2020-09-21 | Split type inner gear ring structure of large planetary gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022072749.0U CN213419793U (en) | 2020-09-21 | 2020-09-21 | Split type inner gear ring structure of large planetary gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213419793U true CN213419793U (en) | 2021-06-11 |
Family
ID=76262869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022072749.0U Active CN213419793U (en) | 2020-09-21 | 2020-09-21 | Split type inner gear ring structure of large planetary gear box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213419793U (en) |
-
2020
- 2020-09-21 CN CN202022072749.0U patent/CN213419793U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4850129B2 (en) | Final reduction gear | |
| EP1489337B1 (en) | Planetary gear drive | |
| CN109915547A (en) | A kind of ultrashort integral type planetary reducer | |
| CN101956787A (en) | Traveling speed reducer for crane | |
| CN218294375U (en) | Wind power gear box integrated connection structure | |
| CN201170292Y (en) | Speed reducing mechanism | |
| EP2418400B1 (en) | Speed reducing device | |
| CN222526836U (en) | Integrated robot joint speed reducer | |
| CN211039547U (en) | Speed reducer for concrete mixer truck | |
| CN200985985Y (en) | Multiple angle cranks, low vibrating and few teeth difference speed reducer | |
| CN112324865A (en) | Wheel edge reduction shell attached cantilever type planetary wheel structure assembly | |
| CN209654538U (en) | A wheel-side movable tooth reducer for engineering vehicles | |
| CN207661072U (en) | NN type Hypocycloid pinwheel planetary reduction gears | |
| CN216923067U (en) | 3K-II type planetary reducer | |
| CN209781582U (en) | Ultrashort integral type planetary reducer | |
| CN214331443U (en) | A wheel-side reducer installation structure and wheel-side reducer assembly | |
| CN116605042A (en) | Integrated hub motor speed reducer | |
| CN214838330U (en) | Miniaturized planetary gear transmission mechanism based on duplicate gear | |
| CN212839248U (en) | High-precision miniature speed reducer | |
| CN210715883U (en) | Coaxial speed reducer with compact structure | |
| CN108679170B (en) | RV speed reducer with small reduction ratio | |
| CN210265810U (en) | Planetary gear mechanism | |
| CN221443269U (en) | Planetary wheel carrier structure of wheel-side speed reducer of 3-ton loader drive axle | |
| CN214240293U (en) | Front axle of tractor | |
| CN214465963U (en) | Cantilever gear supporting structure and speed changing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |