CN206274787U - Brush cutter power output structure - Google Patents
Brush cutter power output structure Download PDFInfo
- Publication number
- CN206274787U CN206274787U CN201621250411.7U CN201621250411U CN206274787U CN 206274787 U CN206274787 U CN 206274787U CN 201621250411 U CN201621250411 U CN 201621250411U CN 206274787 U CN206274787 U CN 206274787U
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- China
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- fan housing
- aluminum pipe
- power output
- brush cutter
- drive shaft
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Abstract
The utility model discloses a kind of brush cutter power output structure, the structure for belonging to brush cutter power output is improved, it is including big fan housing casing, clutch hub, fan housing lid, aluminum pipe, drive shaft and fixed cover etc., the clutch hub is provided with the output shaft for driving drive shaft turns output, mainly drive shaft is connected on output shaft by screw thread tightened-up structure, so as to reduce the abrasion during power output, it is ensured that the service life of product；Simultaneously, close-fitting plug-in mounting structure is used between aluminum pipe and big fan housing casing, between aluminum pipe and fan housing lid, this structure simple installation, the concentricity and precision of power output can be improved, the fixed cover that reduction rubber is made reduces the stability of aluminum pipe mounting structure because expanding with heat and contract with cold, the problems such as so as to cause concentricity bad, therefore greatly enhance fastening structure and stability；And it is omitted the snap ring in existing brush cutter power output structure so that parts are reduced, and also reduce manufacturing cost.
Description
Technical field
The utility model is related to a kind of power output structure of mechanical device, specifically refers to brush cutter power output structure.
Background technology
At present, the structure of brush cutter power output is constituted as shown in figure 4, mainly by big fan housing casing 2, installed in strong wind
The clutch hub 1 at cover casing rear portion, installed in the anterior fan housing lid 5 of big fan housing casing and aluminum pipe 6, installed in aluminum pipe and big fan housing
Fixed cover 4 between casing, and the grade of drive shaft 7 being rotatably installed in aluminum pipe 6 is constituted, and clutch hub 1 is provided with fixed installation
And the output shaft 12 of synchronous axial system, can drive the output power of drive shaft 7 through output shaft.And have been found that in actual use, drive
Moving axis 7 is to form what transmission coordinated with output shaft 12 by the splined shaft of gradually opening of the tooth of eight footpath nine, and this attachment structure is defeated in power
Easily worn and torn during going out, so as to the service life of product cannot be ensured.Meanwhile, the rear end of aluminum pipe 6 is mainly fastened by snap ring 13
In big fan housing casing 2, this structure installs complicated, relatively costly, it is impossible to ensure concentricity and precision, and in brush cutter
Coming off for interior fittings is easily caused during work, the tightness of inner body is reduced；In addition, fan housing is covered in whole power output
Only play a part of to suppress fixed cover in structure, it has certain installation gap between aluminum pipe, and fixed cover is generally used
Rubber is made to play damping effect, but rubber easily the phenomenon expanded with heat and contract with cold occurs, and reduces the stabilization of aluminum pipe mounting structure
Property, so as to influence the concentricity of power output, cause Concentricity tolerance.
The content of the invention
Technical problem to be solved in the utility model be overcome prior art defect and provide a kind of simple installation,
Low cost of manufacture, the brush cutter power output that power output concentricity and precision, enhancing structure tightness and stability can be improved
Structure.
Technical problem of the present utility model is achieved through the following technical solutions：
A kind of brush cutter power output structure, including big fan housing casing, the clutch hub installed in big fan housing casing rear portion,
Installed in the anterior fan housing lid of big fan housing casing and aluminum pipe and the drive shaft being rotatably installed in aluminum pipe；Described clutch hub
It is provided with output shaft of the rotating support in big fan housing casing；Described driving shaft rear end is connected on output shaft, before drive shaft
End stretches out aluminum pipe and exports power；Be provided with fixed cover between described aluminum pipe and big fan housing casing, described driving shaft rear end with
Output shaft is set to screw thread and screws attachment structure；Described aluminum pipe rear end close-fitting is inserted into the big fan housing casing, described aluminium
Close-fitting plug-in mounting structure is also set between pipe and fan housing lid.
It is opposite with the rotation direction of output shaft that the screw thread of described driving shaft rear end screws direction.
The interior shoulder for coordinating the aluminum pipe rear end to make close-fitting inserting is provided with described big fan housing casing.
Described output shaft is provided with bearing of a pair of rotating supports in big fan housing casing.
The bearing shell of multiple supporting drive shaft turns is provided with described aluminum pipe, is equipped between each bearing shell and aluminum pipe
Axle bush sleeve.
Described fixed cover and axle bush sleeve is rubber sleeve.
Compared with prior art, the utility model is mainly and for drive shaft to be connected to output shaft by screw thread tightened-up structure
On, so that the abrasion during reducing power output, it is ensured that the service life of product；Meanwhile, between aluminum pipe and big fan housing casing,
Between aluminum pipe and fan housing lid use close-fitting plug-in mounting structure, this structure simple installation, can improve power output concentricity and
Precision, the fixed cover that reduction rubber is made reduces the stability of aluminum pipe mounting structure because expanding with heat and contract with cold, so as to cause concentricity
Bad the problems such as, therefore greatly enhance fastening structure and stability；And it is omitted existing brush cutter power output structure
In snap ring so that parts are reduced, and also reduce manufacturing cost.
Brief description of the drawings
Fig. 1 is cross section structure diagram of the present utility model.
Fig. 2 is the three-dimensional exploded view of Fig. 1.
Fig. 3 is the cross section structure diagram of big fan housing casing.
Fig. 4 is the cross section structure diagram of existing brush cutter power output structure.
Specific embodiment
The utility model embodiment will again be elaborated by above-mentioned accompanying drawing below.
As shown in Fig. 1 ~ Fig. 4,1. clutch hub, 2. big fan housing casing, shoulder in 21., 22. mounting holes, 3. bearing, 4. fix
Set, 5. fan housing lid, 6. aluminum pipe, 7. drive shaft, 8. bearing shell, 9. screw, 10. axle bush sleeve, 11. jump rings, 12. output shafts, 13. cards
Ring.
Brush cutter power output structure, as shown in Figure 1 and Figure 2, is related in a kind of afforestation instrument on brush mechanomotive force
The structure of output is improved, and it includes big fan housing casing 2, clutch hub 1, fan housing lid 5, aluminum pipe 6, drive shaft 7, fixed cover 4 and axle
Watt set 10 etc..
Wherein, the profile of big fan housing casing 2 is by similar to rectangular-shaped rear portion and similar to columned anterior disjunctor
Combining structure, be provided with the mounting hole 22 for running through along axial line as shown in Figure 3 in big fan housing casing 2, and existing brush cutter
The aperture of mounting hole 22 of big fan housing casing 2 is usually Φ 30+0.05/0, depth dimensions 52mm, this implementation in power output structure
It is Φ 28 ± 0.02, depth dimensions 48mm that example will use the aperture of mounting hole 22；The described motion stops of clutch hub 1 are mounted in big fan housing
The rear portion of casing 2, which is provided with the output shaft 12 stretched into big fan housing casing 2, and the clutch hub 1 and output shaft 12 are to be welded and fixed
Structure, therefore the synchronous axial system of output shaft 12 can be driven when clutch hub 1 is rotated；Described output shaft is rotated by a pair of bearings 3
It is supported in big fan housing casing 2, and as power output part, and the card for being respectively provided on two sides with setting-in fixation of a pair of bearings 3
Spring 11, so that a pair of bearings 3 being capable of stable support output shaft 12.
The described size of aluminum pipe 6 is typically set to Φ 28, and dress is filled in the aluminum pipe rear end from the mounting hole 22 of the big front end of fan housing casing 2
And enter, and being additionally provided with shoulder 21 in a circle on the mounting hole hole wall of big fan housing casing 2, then the rear end of aluminum pipe 6 can be by the close-fitting of interior shoulder 21
Be inserted into big fan housing casing 2, then coordinate adjustment after the size of mounting hole 22 installed after, can preferably improve the same of product
Heart degree and precision so that the tightness of inner body is also greatly promoted；Meanwhile, it is additionally provided between aluminum pipe 6 and big fan housing casing 2 solid
Surely 4 are covered, the fixed cover 4 fastens obvolvent on two apertures of aluminum pipe 6, and aluminum pipe 6 can be lifted in big fan housing casing by fixed cover 4
Installation tightness in 1, and fixed cover 6 is the rubber sleeve being made of elastomeric material, also can preferably play power output knot
Damping effect when structure works.
Described drive shaft 7 is arranged in aluminum pipe 6, and the bearing shell 8 that multiple supporting drive shafts 7 are rotated is additionally provided with aluminum pipe,
Each bearing shell 8 is outer to be set with axle bush sleeve 10, and fastening installation is formed in aluminum pipe 6 to facilitate, and the axle bush sleeve 10 is also to use rubber
The rubber sleeve that glue material is made, can play damping effect.
The described rear end of drive shaft 7 is set to thread spindle, and screws formation between attachment structure and output shaft 12 by screw thread
Connection, the screw thread of the rear end of drive shaft 7 screws the rotation direction in direction and output shaft 12 conversely, therefore can have by this attachment structure
Effect reduces the abrasion during power output, strengthens wearability, improves the service life of product；Stretch the described front end of drive shaft 7
Go out aluminum pipe 6, can be driven through output shaft 12 after rotating, the front end of drive shaft 7 can just export power.
Described fan housing lid 5 is designed to annular cover, and before being fixedly connected on big fan housing casing 2 by two screws 9
Portion, and aluminum pipe 6 will forward extend through fan housing lid 5 and expose, and close-fitting plug-in mounting structure is also set between aluminum pipe 6 and fan housing lid 5,
The hole size Φ 30mm of existing fan housing lid 5 are mainly adjusted to Φ 28mm, outside dimension 47mm is adjusted to 47.6mm, so that
The tightness of aluminum pipe 6 is improve, concentricity is enhanced, aluminum pipe 6 is more stablized in use, also cause big fan housing casing
2 and fan housing lid 5 coordinate it is fixed in drive mechanism part both ensured the concentricity of power output, the fixation on aluminum pipe 6 is reduced again
Set 4 because expand with heat and contract with cold and caused by concentricity it is bad wait influence.
So, between aluminum pipe 6 and big fan housing casing 2 close-fitting plug-in mounting structure, is employed between aluminum pipe 6 and fan housing lid 5, is pacified
Dress is easier, effectively increases the concentricity and precision of power output.
In addition, fan housing lid 5 can also coordinate the installation of fixed cover 4, i.e. fixed cover rear alignment contact is fixed on interior shoulder 21
Cover 4 front ends and give compacting positioning by fan housing lid 5.
The above is only specific embodiment of the utility model, it should be appreciated by those skilled in the art that any and reality
The equivalent structure design of example is applied, be should be included within protection domain of the present utility model.
Claims (6)
1. a kind of brush cutter power output structure, including big fan housing casing（2）, installed in the clutch hub at big fan housing casing rear portion
（1）, installed in the anterior fan housing lid of big fan housing casing（5）And aluminum pipe（6）And it is rotatably installed in the drive shaft in aluminum pipe（7）；Institute
The clutch hub stated（1）Rotating support is provided with big fan housing casing（2）Interior output shaft（12）；Described drive shaft（7）Afterwards
End is connected to output shaft（12）On, drive shaft（7）Aluminum pipe is stretched out in front end（6）And export power；Described aluminum pipe（6）With big fan housing
Casing（2）Between be provided with fixed cover（4）, it is characterised in that described drive shaft（7）Rear end and output shaft（12）It is set to screw thread rotation
Tight attachment structure；Described aluminum pipe（6）Rear end close-fitting is inserted into the big fan housing casing（2）Interior, described aluminum pipe（6）With fan housing
Lid（5）Between be also set to close-fitting plug-in mounting structure.
2. brush cutter power output structure according to claim 1, it is characterised in that described drive shaft（7）The spiral shell of rear end
Line screws direction and output shaft（12）Rotation direction it is opposite.
3. brush cutter power output structure according to claim 1, it is characterised in that described big fan housing casing（2）Inside set
There is the cooperation aluminum pipe（6）Make the interior shoulder of close-fitting inserting in rear end（21）.
4. brush cutter power output structure according to claim 1, it is characterised in that described output shaft（12）It is provided with
A pair of rotating supports are in big fan housing casing（2）Interior bearing（3）.
5. brush cutter power output structure according to claim 1, it is characterised in that described aluminum pipe（6）Inside it is provided with multiple
Support the drive shaft（7）The bearing shell of rotation（8）, each bearing shell and aluminum pipe（6）Between be equipped with axle bush sleeve（10）.
6. brush cutter power output structure according to claim 5, it is characterised in that described fixed cover（4）And axle bush sleeve
（10）It is rubber sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621250411.7U CN206274787U (en) | 2016-11-22 | 2016-11-22 | Brush cutter power output structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621250411.7U CN206274787U (en) | 2016-11-22 | 2016-11-22 | Brush cutter power output structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206274787U true CN206274787U (en) | 2017-06-27 |
Family
ID=59082760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621250411.7U Active CN206274787U (en) | 2016-11-22 | 2016-11-22 | Brush cutter power output structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206274787U (en) |
-
2016
- 2016-11-22 CN CN201621250411.7U patent/CN206274787U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |