CN203344746U - Power takeoff - Google Patents
Power takeoff Download PDFInfo
- Publication number
- CN203344746U CN203344746U CN 201320387895 CN201320387895U CN203344746U CN 203344746 U CN203344746 U CN 203344746U CN 201320387895 CN201320387895 CN 201320387895 CN 201320387895 U CN201320387895 U CN 201320387895U CN 203344746 U CN203344746 U CN 203344746U
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- power
- output shaft
- power takeoff
- takeoff
- gear
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Abstract
The utility model discloses a power takeoff. The power takeoff comprises a power obtaining output shaft and a shell which supports the power obtaining output shaft, wherein the cross section of an inner cavity of the shell is round, a power obtaining gear is arranged at one end of the power obtaining output shaft and is used for being meshed with a gear of an engine gear chamber, an internal spline is arranged at the other end of the power obtaining output shaft and is used for being matched with an external spline of a power device, and the power obtaining output shaft and the shell are arranged in an eccentric mode. According to the power takeoff, due to the fact that the power obtaining output shaft and the shell are arranged in the eccentric mode, when the transmission speed ratio of the power takeoff needs to the changed according to the requirements of the rotating speed of the power device, a user just needs to change the number of teeth of the power obtaining gear of the power obtaining output shaft according to requirements and correspondingly change the eccentric position, relative to the shell, of the power obtaining output shaft, and the structure that the power obtaining output shaft and the shell are arranged in the eccentric mode is easy to realize. Compared with the prior art, the power takeoff has the advantage that due to the fact that the transmission speed ratio of the power takeoff can be adjusted without the need of changing the installation position, change, caused by the change of the installation position of the power takeoff, of relevant matched structures is avoided.
Description
Technical field
The utility model relates to vehicle power taking field, particularly relates to a kind of power takeoff of driving engine.
Background technology
Power takeoff, claim again power take off, is mounted in the additional device on flywheel shell of engine, by from driving engine machine gear case, obtaining power, to special vehicles such as the dumping car that needs extra power, fire extinguishing tanker, concrete mixer and refrigeration cars, provides power.
Current power takeoff commonly used, the housing that comprises power taking output shaft and support power taking output shaft, described power taking output shaft is supported in described housing by bearing, the cross-sectional plane of described housing inner chamber is rounded, the power taking output shaft arranges with housing is concentric, and the longitudinal center line of power taking output shaft overlaps with the line of centers of housing.After power takeoff is installed, its transmission speed ratio is determined.During in the slow speed of revolution operating mode, due to the restriction that is subject to the power takeoff transmission speed ratio, can't meet high rotating speed power output demand at driving engine, make the output speed of power takeoff and the rated speed of rotation of different dynamic device match, need to change the transmission speed ratio of power takeoff.Processing mode at present commonly used is the transmission speed ratio that the installation site by changing power takeoff changes power takeoff, because the installation site of power takeoff changes, make relevant supporting structure also need to change to adapt to new installation site, often the change of supporting structure is larger, be unfavorable for operation, and due to the variation of installation site, therefore the arrangement space of power takeoff housing also can be restricted, and makes troubles to the installation of power takeoff.
In view of this, how to improve the structure of power takeoff, in the power takeoff installation site under constant prerequisite, driving engine is when the slow speed of revolution operating mode, the power takeoff output unit can be exported high rotating speed, meets the speed demand of engine installation, is the current technical issues that need to address of those skilled in the art.
The utility model content
The purpose of this utility model is to provide a kind of power takeoff, and under this power takeoff prerequisite constant in installation site, its output speed can meet the high rotating speed requirement of engine installation in the larger range of speed of driving engine.
For solving the problems of the technologies described above, the utility model provides a kind of power takeoff, comprises the housing of power taking output shaft and the described power taking output shaft of support; The cross-sectional plane of described housing inner chamber is rounded; One end of described power taking output shaft is provided with power take-off gear, and for the engagement of the gear with engine gear case, the other end is provided with female splines, for coordinating with the male splines of engine installation; Described power taking output shaft and described housing eccentric setting.
Preferably, described power taking output shaft passes through two bearings in described housing.
Preferably, be provided with spacer ring between two described bearings.
Preferably, two described bearings are respectively cylindrical roller bearing and double-row angular contact bal bearing.
Preferably,, described double-row angular contact bal bearing is positioned at described power taking output shaft female splines one end is set.
Preferably, the both sides of described cylindrical roller bearing are provided with circlip.
Preferably, the inner chamber of described housing is provided with the step surface towards described power take-off gear, and a side of described double-row angular contact bal bearing coordinates with described step surface, and opposite side is provided with circlip.
Preferably, the end that described power taking output shaft is provided with female splines is provided with protrusion, on described protrusion, is set with briquetting, described briquetting and the laminating of described double-row angular contact bal bearing.
Preferably, also be provided with seal ring on described housing.
The utility model, by the structural development to power takeoff, makes under the prerequisite constant in the power takeoff installation site, and driving engine is when the slow speed of revolution operating mode, and the power takeoff output unit can be exported high rotating speed.Particularly, an end of power taking output shaft is provided with the power take-off gear with the engagement of the gear of engine gear case, in order to obtain power; The other end is provided with the female splines coordinated with the male splines of engine installation, so that outputting power; Power taking output shaft and the housing eccentric setting that supports it.Due to power taking output shaft and housing eccentric setting, speed demand according to engine installation, while needing to change the transmission speed ratio of power takeoff, only need to change as required the number of teeth of the power take-off gear of power taking output shaft, correspondingly change the eccentric position of the relative housing of power taking output shaft, the structure of power taking output shaft and housing eccentric setting easily realizes, and can regulate according to eccentric degree the transmission speed ratio of power takeoff; Compared with prior art, the power takeoff that the utility model provides is the transmission speed ratio of capable of regulating power takeoff without changing installation site, the change of the relevant supporting structure of having avoided the variation because of the power takeoff installation site to cause.
In preferred version of the present utility model, described power taking output shaft is supported in described housing by double-row angular contact bal bearing and cylindrical roller bearing.Because double-row angular contact bal bearing can bear larger Radial load and capsizing moment, and good rigidly, so adopt the combination of double-row angular contact bal bearing and cylindrical roller bearing that the power taking output shaft is supported in to housing, can extend the work life of power takeoff.
The accompanying drawing explanation
The generalized section that Fig. 1 is power takeoff provided by the utility model;
The axle that Fig. 2 is power takeoff provided by the utility model measures intention;
The left view that Fig. 3 is power takeoff shown in Fig. 1;
The right elevation that Fig. 4 is power takeoff shown in Fig. 1.
In Fig. 1-Fig. 4:
The specific embodiment
Core of the present utility model is to provide a kind of power takeoff, and under this power takeoff prerequisite constant in installation site, its output speed can meet the high rotating speed requirement of engine installation in the larger range of speed of driving engine.
In order to make those skilled in the art person understand better the utility model scheme, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 1 and Fig. 2, the generalized section that Fig. 1 is power takeoff provided by the utility model; The axle that Fig. 2 is power takeoff provided by the utility model measures intention.
As shown in Figures 1 and 2, this power takeoff comprises housing 10 and power taking output shaft 20; Power taking output shaft 20 is supported in housing 10 by bearing 30; The cross-sectional plane of housing 10 inner chambers is rounded.
The left end of power taking output shaft 20 is provided with power take-off gear 21, and for a certain gear engagement with engine gear case, to obtain power, this power take-off gear 21 can be made as helical wheel; The right-hand member of power taking output shaft 20 is provided with female splines 22, for coordinating with the male splines of engine installation, so that outputting power.
The left end of housing 10 is connected with flywheel shell of engine, and the right-hand member of housing 10 is connected with engine installation.The left end of housing 10 also is provided with seal ring 50, the sealing for housing 10 with flywheel shell of engine.
Here it is to be noted; above-mentioned left and right is that the mutual alignment relation reached between parts in figure with parts in Fig. 1 defines; just, in order to explain the clear and convenient of scheme, should be appreciated that the use of the described noun of locality should not limit the protection domain of the application's request.
Also it is pointed out that above-mentioned engine installation refers to the equipment that need to obtain extra power.
Particularly, described bearing 30 comprises cylindrical roller bearing 31 and double-row angular contact bal bearing 32; In order to prevent 30 contacts of two bearings, between cylindrical roller bearing 31 and double-row angular contact bal bearing 32, be provided with spacer ring 40.
Wherein, double-row angular contact bal bearing 32 is located at the end that power taking output shaft 20 is provided with female splines 22.The inner chamber of housing 10 is provided with the step surface 11 towards power take-off gear 21, and a side of double-row angular contact bal bearing 32 coordinates with this step surface 11, and opposite side is provided with elastic force back-up ring 60, thus the axial location of restriction double-row angular contact bal bearing 32.
The both sides of cylindrical roller bearing 31 all arrange circlip 60, for limiting the axial location of cylindrical roller bearing 31.
In the course of the work, the main bearing radial force of cylindrical roller bearing 31, double-row angular contact bal bearing 32 is bearing radial force both, bears again axial force.Because cylindrical roller bearing 31 has higher radially load-carrying capacity, double-row angular contact bal bearing 32 can bear larger Radial load and capsizing moment, and rigidity is better, so the combination by cylindrical roller bearing 31 and double-row angular contact bal bearing 32 is supported in housing 10 by power taking output shaft 20, can extend the work life of power takeoff.Certainly, when reality is used, also can choose other applicable bearing combination according to the stressing conditions of power taking output shaft 20.
Wherein, the external diameter of circlip 60, than the slightly larger in diameter of the assembly opening of housing 10 inner chambers, can be installed by Circlip tongs during installation.
The end that power taking output shaft 20 is provided with female splines 22 is provided with protrusion 23, is set with briquetting 70 on this protrusion, preferably, can make briquetting 70 and double-row angular contact bal bearing 32 laminatings.Arranging of this briquetting 70 can be avoided axially rocking of power taking output shaft 20; Particularly, this briquetting 70 can be nut, protrusion 23 is provided with the screw thread coordinated with it, pass through screw thread fit, make nut can compress laminating double-row angular contact bal bearing 32, can prevent better axially rocking of power taking output shaft 20, and limit better the axial location of double-row angular contact bal bearing 32.
Please refer to Fig. 3 and Fig. 4; The left view that Fig. 3 is power takeoff shown in Fig. 1; The right elevation that Fig. 4 is power takeoff shown in Fig. 1.
Can find out power taking output shaft 20 and housing 10 eccentric settings from Fig. 3 and Fig. 4.During work, power take-off gear 21 meshes with a certain gear of engine gear case, obtains power driven power taking output shaft 20 and rotates, and female splines 22 coordinates with the male splines of engine installation, thereby the power that power taking output shaft 20 is obtained exports engine installation to, and then drive engine installation work.
After power takeoff installs, the transmission speed ratio of power takeoff is determined, so the output speed of power takeoff depends on engine speed.If driving engine is when normal working, the output speed of power takeoff can meet the demand of engine installation, and driving engine is when starting, in the slow speed of revolution operating mode so, because the power takeoff transmission speed ratio is determined, so now the output speed of power takeoff can't meet the speed demand of engine installation.In order to make driving engine in larger range of speed, the output speed of power takeoff meets the speed demand of engine installation, need to change the transmission speed ratio of power takeoff, make driving engine when the slow speed of revolution operating mode, the output speed of power takeoff can meet the speed demand of engine installation.
Power taking output shaft 20 and housing 10 eccentric settings due to power takeoff, while needing to change the power takeoff transmission speed ratio, can only change the eccentric position of power taking output shaft 20 relative housings 10, thereby in other condition under constant prerequisite, by changing the number of teeth of power take-off gear 21, adjust the transmission speed ratio of power takeoff, make it when driving engine slow speed of revolution operating mode, can meet the speed demand of engine installation.
Particularly, speed demand according to Operation Conditions and the engine installation of driving engine, after having determined the transmission speed ratio of power takeoff, the parameters of the power take-off gear 21 of power takeoff is determined, at this moment, according to the position of a certain gear of the engine gear case with power take-off gear 21 engagement, can determine the position of power taking output shaft 20 relative housings 10.The a certain gear of the engine gear case that hereinafter will mesh with power take-off gear 21 for convenience of description, is called output gear.
Now, if the external connection power device changes, the transmission speed ratio that need to again mate power takeoff, due to power taking output shaft 20 and housing 10 eccentric settings, can change the installation site of power takeoff, due to the location positioning of the output gear of the engagement of the power take-off gear 21 with power takeoff, so in the situation that power take-off gear 21 other parameter constants, only need to change the number of teeth of power take-off gear 21, can change the transmission speed ratio of power takeoff.
If according to the actual requirements, need to increase the number of teeth of power take-off gear 21, so correspondingly, the diameter of power taking output shaft 20 increases, in order to make power take-off gear 21 and output gear engagement, power taking output shaft 20 need to move to the direction near housing 10 centers compared to initial position.
If according to the actual requirements, need to reduce the number of teeth of power take-off gear 21, so correspondingly, the diameter of power taking output shaft 20 reduces, in order to make power take-off gear 21 and output gear engagement, power taking output shaft 20 need to move to the direction away from housing 10 centers compared to initial position.
Hence one can see that, if meet the speed demand of different dynamic device, without changing the installation site of power takeoff on driving engine, only need the power taking output shaft 20 and housing 10 eccentric settings of power takeoff, according to different output speed demands, adjust the number of teeth of power take-off gear 21, correspondingly adjust power taking output shaft 20 and get final product with the eccentric position of housing 10.The structure of this power takeoff is arranged on while needing to change transmission speed ratio, and without the installation site of change power takeoff, relevant supporting structure is also without change, simple and easy to operate.
Above power takeoff provided by the utility model is described in detail.Applied specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (9)
1. a power takeoff, comprise power taking output shaft and the housing that supports described power taking output shaft; The cross-sectional plane of described housing inner chamber is rounded; It is characterized in that, an end of described power taking output shaft is provided with power take-off gear, and for the engagement of the gear with engine gear case, the other end is provided with female splines, for coordinating with the male splines of engine installation; Described power taking output shaft and described housing eccentric setting.
2. power takeoff as claimed in claim 1, is characterized in that, described power taking output shaft passes through two bearings in described housing.
3. power takeoff as claimed in claim 2, is characterized in that, between two described bearings, is provided with spacer ring.
4. power takeoff as claimed in claim 2, is characterized in that, two described bearings are respectively cylindrical roller bearing and double-row angular contact bal bearing.
5. power takeoff as claimed in claim 4, is characterized in that, described double-row angular contact bal bearing is positioned at described power taking output shaft female splines one end is set.
6. power takeoff as claimed in claim 5, is characterized in that, the both sides of described cylindrical roller bearing are provided with circlip.
7. power takeoff as claimed in claim 5, is characterized in that, the inner chamber of described housing is provided with the step surface towards described power take-off gear, and a side of described double-row angular contact bal bearing coordinates with described step surface, and opposite side is provided with circlip.
8. power takeoff as claimed in claim 7, is characterized in that, the end that described power taking output shaft is provided with female splines is provided with protrusion, on described protrusion, is set with briquetting, described briquetting and the laminating of described double-row angular contact bal bearing.
9. power takeoff as claimed in claim 1, is characterized in that, also is provided with seal ring on described housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320387895 CN203344746U (en) | 2013-07-01 | 2013-07-01 | Power takeoff |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320387895 CN203344746U (en) | 2013-07-01 | 2013-07-01 | Power takeoff |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203344746U true CN203344746U (en) | 2013-12-18 |
Family
ID=49744678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320387895 Expired - Lifetime CN203344746U (en) | 2013-07-01 | 2013-07-01 | Power takeoff |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203344746U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303139A (en) * | 2013-07-01 | 2013-09-18 | 潍柴动力股份有限公司 | Power take-off |
-
2013
- 2013-07-01 CN CN 201320387895 patent/CN203344746U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303139A (en) * | 2013-07-01 | 2013-09-18 | 潍柴动力股份有限公司 | Power take-off |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131218 |
|
| CX01 | Expiry of patent term |