CN106402346A - Duplex gear - Google Patents
Duplex gear Download PDFInfo
- Publication number
- CN106402346A CN106402346A CN201610980782.9A CN201610980782A CN106402346A CN 106402346 A CN106402346 A CN 106402346A CN 201610980782 A CN201610980782 A CN 201610980782A CN 106402346 A CN106402346 A CN 106402346A
- Authority
- CN
- China
- Prior art keywords
- gear
- pinion shaft
- conical surface
- surface section
- gear wheel
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
- F16H2057/0235—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly specially adapted to allow easy accessibility and repair
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
Abstract
The invention discloses a duplex gear. The duplex gear comprises a big gear and a pinion shaft and further comprises a nut. The big gear is provided with a conical inner hole. The pinion shaft is provided with a gear part and an outer conical surface section. The conical inner hole of the big gear is in interference fit with the outer conical surface section of the pinion shaft through a cone. The small end, adjacent to the outer conical surface section, of the pinion shaft is provided with an external thread. The nut is connected to the external thread of the pinion shaft in a threaded mode and directly or indirectly abuts against the outer end of the big gear. The duplex gear is detachable and adjustable, different heat treatment requirements of two gears can be met, negative influences of excessively-high assembling temperature on the gears can be avoided in the assembling process, and the rejection rate of parts is decreased to the maximum extent.
Description
Technical field
The present invention relates to a kind of gear, particularly a kind of duplicate gear.
Background technology
In certain mine equipment decelerator, using dual gear structure, for ensureing the normal operation of drive system, large and small
The relative determination of gear, and phase place deflection angle is not more than 1 '.At present, the common structure form of this duplicate gear has two kinds：
One kind is monoblock type, and gear is formed by a gear blank overall processing；Another kind is split type, and the big little gear of duplex-gear is by two teeth
Base processes respectively, is coupled together its interference by flatulence of heat type method more afterwards, cannot be carried out dismounting adjustment after coupling together.
Monoblock type duplex-gear, two gears of duplex-gear are processed by gear hobbing, heat treatment, roll flute by same gear blank.
Due to need ensure process one of gear when cutter and another gear blank can not interfere, therefore this two gears of duplex-gear it
Between to meet certain pitch requirements, thus limiting the reduction of duplex-gear axial length；Due to being same gear blank, two gears can only
Carry out identical heat treatment in same stove, when two modules are different, when surface optimum case depth is different, this kind of structure is not
It is suitable for again.
Existing Split type duplex tooth, first respectively two gears of duplex-gear are individually carried out gear hobbing, heat treatment, corase grind plus
Work, is assembled being heated by special frock, and entirety is once refined again afterwards.Due to mill before heating assembling fine grinding
Cut surplus very little it is necessary to two gear phase contrasts are very little after heating assembling, matching requirements are high；And between gear and gear shaft
The magnitude of interference is very big, wherein one gear need to be heated to more than 200 DEG C during assembling, can lead to bias and to two form of gear tooth teeth
To impact, and heat assembling after cannot dismantle, can only once mounting put in place.Assembling therefore often occurs and finishes two gear phase contrasts
Profile of tooth metaboly when exceeding required value or hot charging, be cannot be carried out dismounting adjustment, causes during installation after being assembled due to duplex-gear
Deviation frequently result in scrapping of whole duplex-gear.
Content of the invention
It is an object of the invention to provide there being a kind of duplicate gear of detachable adjustment.
In order to achieve the above object, the present invention is achieved through the following technical solutions：A kind of duplicate gear, including gear wheel
And pinion shaft, also include nut, described gear wheel has circular cone endoporus, described pinion shaft has gear part and outer conical surface
Section, the circular cone endoporus of described gear wheel relies on circular cone interference fit, the neighbour on pinion shaft with the outer conical surface section of pinion shaft
Nearly outer conical surface section small end has external screw thread, and described nut thread is connected on the external screw thread of pinion shaft, and with gear wheel
Outer end directly or indirectly offsets.
The taper of the circular cone endoporus of described gear wheel is 1:30；The taper of the outer conical surface section of described pinion shaft is 1:
30.
The fuel feed hole of radial direction is had on described gear wheel, has into oil ring groove in the middle part of the wall of circular cone endoporus of gear wheel,
Described fuel feed hole communicates with entering oil ring groove.
Helicla flute is had on the outer conical surface section of described pinion shaft, described spiral fluted pitch is less than the circular cone of gear wheel
The groove width entering oil ring groove in endoporus, the big end distance away from outer conical surface section for the described spiral fluted tail end is more than gear wheel and little tooth
The amount of being axially forced to during wheel shaft interference fit.
Described nut is offseted by lock washer indirectly with one end of gear wheel.
It is connected with step between the inner of gear part on described pinion shaft and the big end of outer conical surface section, gear part
Outer end is connected with axle journal.
Described pinion shaft also has axial mesopore.
Described nut is round nut.
After said structure, the present invention operation such as loads and unloads by nut, completes the group between gear wheel and pinion shaft
Dress or dismounting operation.Disclosure satisfy that the different heat treatment requirements of two gears, fitting temperature can be avoided too high in assembling again
Harmful effect to gear, and when once assembling unsuccessful, easily secondary assembling can be carried out again by after two gear disassemblings,
Decrease the scrappage of part to greatest extent.
Brief description
The present invention is further detailed explanation for the embodiment being given below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of the duplicate gear of the present invention；
Fig. 2 is the structural representation of the gear wheel in Fig. 1；
Fig. 3 is the structural representation of the pinion shaft in Fig. 1.
Specific embodiment
As shown in Figure 1, 2, 3, a kind of duplicate gear of the present invention, including gear wheel 1 and pinion shaft 2, also includes nut
3, described gear wheel 1 has circular cone endoporus 1-1, and described pinion shaft 2 has gear part 2-5 and outer conical surface section 2-1, described big
The circular cone endoporus 1-1 of gear 1 relies on circular cone interference fit, the neighbour on pinion shaft 2 with outer conical surface section 2-1 of pinion shaft 2
Nearly outer conical surface section 2-1 small end has external screw thread 2-4, and described nut 3 is threaded on the external screw thread 2-4 of pinion shaft 2, and
Directly or indirectly offset with the outer end 1-2 of gear wheel 1.
As shown in Figure 2,3, the taper of the circular cone endoporus 1-1 of described gear wheel 1 is 1:30；Described pinion shaft 2 cylindrical
The taper of conical surface section 2-1 is 1:30.
As shown in Fig. 2 the fuel feed hole 1-3 of radial direction is had on described gear wheel 1, the wall of the circular cone endoporus 1-1 of gear wheel 1
Middle part has into oil ring groove 1-4, and described fuel feed hole 1-3 communicates with entering oil ring groove 1-4.
As shown in Fig. 3,1, outer conical surface section 2-1 of described pinion shaft 2 has helicla flute 2-2, described helicla flute 2-2
Pitch be less than gear wheel 1 circular cone endoporus 1-1 in the groove width entering oil ring groove 1-4, the tail end of described helicla flute 2-2 is away from cylindrical
The big end distance of conical surface section 2-1 is more than gear wheel 1 and the amount of being axially forced to during pinion shaft 2 interference fit.
The described amount of being axially forced to generally is determined according to the magnitude of interference conversion that transmitting torque needs by technical staff.
As shown in figure 1, described nut 3 is offseted by lock washer 4 indirectly with one end 1-2 of gear wheel 1.
As shown in figure 3, connecting between the inner of gear part 2-5 on described pinion shaft 2 and the big end of outer conical surface section 2-1
It is connected to step 2-3, the outer end of gear part 2-5 is connected with axle journal 2-6.
As shown in figure 1, described pinion shaft 2 also has axial mesopore 2-7.
As shown in figure 1, described nut 3 is round nut.
As shown in Figure 1, 2, 3, the present invention, in assembling, the circular cone endoporus 1-1 of gear wheel 1 is enclosed within the outer of pinion shaft 2
In taper seat section 2-1, apply certain pressure with hydraulic cylinder in the outer end 1-2 of gear wheel, so that two taper seats is fitted tightly, then pass through
Fuel feed hole 1-3 injection pressure oil on gear wheel 1, the oil ring groove 1-4 that enters that pressure oil passes through gear wheel 1 enters pinion shaft 2
In helicla flute 2-2 in outer conical surface section 2-1, thus pressure is evenly transferred between two taper seats, continue to use hydraulic pressure simultaneously
Cylinder applies pressure in the outer end 1-2 of gear wheel 1, so that gear wheel 1 is moved on pinion shaft 2, until displacement reaches requirement
Intrusion, then by gear wheel 1 fuel feed hole 1-3 injection pressure oil pressure release, now gear wheel 1, pinion shaft 2 completed
It is full of cooperation, then removes and apply stressed hydraulic cylinder in the outer end 1-2 of gear wheel 1, install in the external screw thread 2-4 of pinion shaft 2
Check washer 4 and nut 3, complete to assemble.
When needing dismounting or adjusting, first nut 3 and check washer 4 are dismantled, then by the fuel feed hole 1- on gear wheel 1
3 injection pressure oils, the oil ring groove 1-4 that enters that pressure oil passes through gear wheel 1 enters the spiral shell in outer conical surface section 2-1 of pinion shaft 2
In spin slot 2-2, pressure is evenly transferred between two taper seats, makes to produce minim gap between two taper seats, now use hydraulic pressure
Cylinder applies certain pressure in the inner 1-5 of gear wheel, and due to being circular cone interference fit, only need to extrude a short distance just can be by
Gear wheel 1 easily takes off from pinion shaft 2.
Claims (8)
1. a kind of duplicate gear, including gear wheel（1）And pinion shaft（2）It is characterised in that：Also include nut（3）, described big
Gear（1）There is circular cone endoporus（1-1）, described pinion shaft（2）There is gear part（2-5）With outer conical surface section（2-1）, described
Gear wheel（1）Circular cone endoporus（1-1）With pinion shaft（2）Outer conical surface section（2-1）Rely on circular cone interference fit, little gear
Axle（2）On neighbouring outer conical surface section（2-1）Small end has external screw thread（2-4）, described nut（3）It is threaded in pinion shaft
（2）External screw thread（2-4）On, and and gear wheel（1）Outer end（1-2）Directly or indirectly offset.
2. duplicate gear according to claim 1 it is characterised in that：Described gear wheel（1）Circular cone endoporus（1-1）Cone
Spend for 1:30；Described pinion shaft（2）Outer conical surface section（2-1）Taper be 1:30.
3. duplicate gear according to claim 1 it is characterised in that：Described gear wheel（1）On there is the fuel feed hole of radial direction
（1-3）, gear wheel（1）Circular cone endoporus（1-1）Wall in the middle part of have into oil ring groove（1-4）, described fuel feed hole（1-3）With enter
Oil ring groove（1-4）Communicate.
4. duplicate gear according to claim 3 it is characterised in that：Described pinion shaft（2）Outer conical surface section（2-1）
On there is helicla flute（2-2）, described helicla flute（2-2）Pitch be less than gear wheel（1）Circular cone endoporus（1-1）In enter oil ring
Groove（1-4）Groove width, described helicla flute（2-2）Tail end away from outer conical surface section（2-1）Big end distance more than gear wheel（1）With
Pinion shaft（2）The amount of being axially forced to during interference fit.
5. duplicate gear according to claim 1 it is characterised in that：Described nut（3）With gear wheel（1）One end（1-
2）By lock washer（4）Indirectly offset.
6. duplicate gear according to claim 1 it is characterised in that：Described pinion shaft（2）On gear part（2-5）'s
The inner and outer conical surface section（2-1）Big end between be connected with step（2-3）, gear part（2-5）Outer end be connected with axle journal（2-
6）.
7. duplicate gear according to claim 1 it is characterised in that：Described pinion shaft（2）Also there is axial mesopore（2-
7）.
8. duplicate gear according to claim 1 it is characterised in that：Described nut（3）It is round nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610980782.9A CN106402346A (en) | 2016-11-08 | 2016-11-08 | Duplex gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610980782.9A CN106402346A (en) | 2016-11-08 | 2016-11-08 | Duplex gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106402346A true CN106402346A (en) | 2017-02-15 |
Family
ID=58015162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610980782.9A Pending CN106402346A (en) | 2016-11-08 | 2016-11-08 | Duplex gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106402346A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307324A (en) * | 2019-07-30 | 2019-10-08 | 苏州格特钠汽车技术有限公司 | A kind of duplicate gear connection member |
| CN110576300A (en) * | 2019-10-11 | 2019-12-17 | 东莞市阿巴斯精密传动科技有限公司 | Preparation process of miniature duplicate gear and positioning clamp for pressing |
| CN116117142A (en) * | 2023-01-10 | 2023-05-16 | 湖南南方宇航高精传动有限公司 | Split type duplex gear and preparation method and assembly method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201836339U (en) * | 2010-10-15 | 2011-05-18 | 贵州群建精密机械有限公司 | Dual gear structure |
| CN202629000U (en) * | 2012-06-12 | 2012-12-26 | 重庆神箭汽车传动件有限责任公司 | Duplicate gear of electric forklift reducer |
| CN203453432U (en) * | 2013-07-25 | 2014-02-26 | 陕西汉德车桥有限公司 | Double-reduction duplicate gear assembly of automobile drive axle |
| CN203560389U (en) * | 2013-11-11 | 2014-04-23 | 中国北车集团大连机车车辆有限公司 | Dual gear assembly of diesel engine |
| JP2015132297A (en) * | 2014-01-10 | 2015-07-23 | 日本精工株式会社 | Rotating member support shaft |
| CN205315667U (en) * | 2016-01-15 | 2016-06-15 | 中国航空动力机械研究所 | Main drive bevel gear mechanism |
| CN206190869U (en) * | 2016-11-08 | 2017-05-24 | 中车戚墅堰机车车辆工艺研究所有限公司 | Duplicate gear |
-
2016
- 2016-11-08 CN CN201610980782.9A patent/CN106402346A/en active Pending
Patent Citations (7)
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|---|---|---|---|---|
| CN201836339U (en) * | 2010-10-15 | 2011-05-18 | 贵州群建精密机械有限公司 | Dual gear structure |
| CN202629000U (en) * | 2012-06-12 | 2012-12-26 | 重庆神箭汽车传动件有限责任公司 | Duplicate gear of electric forklift reducer |
| CN203453432U (en) * | 2013-07-25 | 2014-02-26 | 陕西汉德车桥有限公司 | Double-reduction duplicate gear assembly of automobile drive axle |
| CN203560389U (en) * | 2013-11-11 | 2014-04-23 | 中国北车集团大连机车车辆有限公司 | Dual gear assembly of diesel engine |
| JP2015132297A (en) * | 2014-01-10 | 2015-07-23 | 日本精工株式会社 | Rotating member support shaft |
| CN205315667U (en) * | 2016-01-15 | 2016-06-15 | 中国航空动力机械研究所 | Main drive bevel gear mechanism |
| CN206190869U (en) * | 2016-11-08 | 2017-05-24 | 中车戚墅堰机车车辆工艺研究所有限公司 | Duplicate gear |
Non-Patent Citations (2)
| Title |
|---|
| 蔡春源: "《机电液设计手册 上》", 31 January 1997, 机械工业出版社 * |
| 闫玉涛: "《机械设计基础》", 31 December 2013 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307324A (en) * | 2019-07-30 | 2019-10-08 | 苏州格特钠汽车技术有限公司 | A kind of duplicate gear connection member |
| CN110307324B (en) * | 2019-07-30 | 2024-05-14 | 苏州格特钠汽车技术有限公司 | Duplex gear connecting structural member |
| CN110576300A (en) * | 2019-10-11 | 2019-12-17 | 东莞市阿巴斯精密传动科技有限公司 | Preparation process of miniature duplicate gear and positioning clamp for pressing |
| CN116117142A (en) * | 2023-01-10 | 2023-05-16 | 湖南南方宇航高精传动有限公司 | Split type duplex gear and preparation method and assembly method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170215 |