CN205937750U - Compact structure's power takeoff - Google Patents
Compact structure's power takeoff Download PDFInfo
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- CN205937750U CN205937750U CN201620911982.4U CN201620911982U CN205937750U CN 205937750 U CN205937750 U CN 205937750U CN 201620911982 U CN201620911982 U CN 201620911982U CN 205937750 U CN205937750 U CN 205937750U
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- spline
- hole
- driving gear
- power takeoff
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Abstract
The utility model provides a compact structure's power takeoff, be in including casing and setting the driving gear, transition gear and the output gear that just mesh in proper order in the casing still include the bolt, the perforation has been seted up on the driving gear respectively, the bolt alternates in the perforation, just the both ends of bolt respectively with the flywheel and the the crankshaft of engine. Through setting up the bolt and set up the perforation on the driving gear, only need set up the screw hole on the bent axle of engine, also set up the perforation on the flywheel of engine, then be in the same place flywheel, driving gear and bent axle fixed connection in proper order through the bolt, need utilize original screw hole on the bent axle, the technical scheme who processes the spline with the tradition on the bent axle compares, and manufacturing cost is relatively low and the assembling is better, and the structure is also comparatively compact.
Description
Technical field
This utility model is related to a kind of mechanical driving device, particularly a kind of power takeoff of compact conformation.
Background technology
On the special vehicles such as excavator, not only need to provide power it is also desirable to start for electromotor for the traveling of vehicle
Machine provides some or all power to be used for driving miscellaneous part, and this is accomplished by installing on the electromotor of this kind of special vehicle
Power takeoff.
Traditional power takeoff generally includes the driving gear engaging successively, transition gear and output gear, active therein
Gear is used for being connected with the transmission of crankshaft of vehicle motor, and output gear is used for and the power transmission shaft on vehicle plunger displacement pump or hydraulic pump
It is in transmission connection.Generally adopt spline connection between the bent axle of electromotor and driving gear, fix also by bolt on bent axle simultaneously
It is connected with flywheel, so not only need to open up bolt hole on bent axle in addition it is also necessary to spline is processed on bent axle, production cost is relatively
Higher.
Additionally, traditional power takeoff driving gear and engine crankshaft and output gear and plunger displacement pump or hydraulic pump
All it is directly linked together using spline between power transmission shaft, adopt gapless mistake between corresponding spline and splined hole
Be full of cooperation when, the assembling between spline and splined hole is poor；Just have between gap between corresponding spline and splined hole
Although assembly line is preferable during gap cooperation, but when the outfan of power takeoff needs the operation such as acceleration or deceleration, the spline of rigidity
High frequency strenuous vibration can be produced and splined hole between, and then to the motor element on electromotor or plunger displacement pump or hydraulic pump and sealing
Part produces impact, the sealing property of impact associated seal, and the output simultaneously also resulting in power takeoff is unstable, affects plunger displacement pump
Or the service life of hydraulic pump and complete equipment.
In view of this, the applicant conducts in-depth research to the structure of power takeoff, then has this case to produce.
Utility model content
The purpose of this utility model is to provide a kind of production cost relatively low and the preferable compact conformation of assembling
Power takeoff.
To achieve these goals, this utility model adopts the following technical scheme that：
A kind of power takeoff of compact conformation, including housing and the driving tooth that is arranged in described housing and engages successively
Wheel, transition gear and output gear, also include bolt, described driving gear offer perforation respectively, described bolt is interspersed in
In described perforation, and the two ends of described bolt are connected with the flywheel of electromotor and bent axle respectively.
As of the present utility model a kind of improve, described be perforated with five, five described perforation are with described driving gear
Centered on axis, circumference is on described driving gear.
As a kind of improvement of the present utility model, also include alignment pin, described driving gear offers location hole, described
Alignment pin is interspersed in described positioning in the hole, and the two ends of described alignment pin are respectively interposed on the flywheel and bent axle of electromotor.
As a kind of improvement of the present utility model, also include elastomer, described output gear be provided with the first splined hole,
The first spline with described first splined hole cooperation is provided with described elastomer, described elastomer is further opened with and plunger displacement pump
Or the second splined hole of the power transmission shaft cooperation of hydraulic pump, described first spline is interspersed in described first spline in the hole, described output
Gear, described first splined hole and described second splined hole are mutually coaxially arranged.
As a kind of improvement of the present utility model, described first splined hole and/or described second splined hole have involute
Spline.
As of the present utility model a kind of improve, between described first spline and described first splined hole and described second
Gap cooperation, interference fits or interference fit is adopted between spline and described second splined hole.
Using technique scheme, this utility model has the advantages that：
1st, pass through to arrange bolt and perforation is opened up on driving gear, only need to open up screwed hole on the bent axle of electromotor,
Perforation is also opened up on the flywheel of electromotor, then by bolt, flywheel, driving gear and bent axle is fixedly connected sequentially one
Rise, only need on bent axle thread mill drilling, compared with the technical scheme processing spline on bent axle with tradition, production cost is relatively
Preferably, structure is also more compact for low and assembling.
2nd, pass through to arrange elastomer, being rigidly connected between output gear and power transmission shaft is changed to be flexibly connected, assembling
Property preferably, and the microseism that the cushioning effect of elastomer can reduce spline and splined hole produces is rushed to motor element and sealing member
Hit, output characteristics is also more gentle, the service life of plunger displacement pump or hydraulic pump can be extended 3-5.
3rd, elastomer is interspersed in output gear the first spline by being arranged on elastomer, will not increase power takeoff
Appearance profile size, structure is more compact.
Brief description
Fig. 1 is the structural representation of the power takeoff of this utility model form touch；
Fig. 2 is the positive structure diagram of the power takeoff of this utility model compact conformation, in figure broken section, and is connected with
Engine crankshaft and flywheel；
Fig. 3 is the self-lubricating structure schematic diagram of the power takeoff of this utility model compact conformation, and in figure arrow show lubrication
The flow direction of liquid.
It is as follows that each in figure indicates correspondence：
10- housing；20- driving gear；
30- transition gear；31- transition wheel shaft；
32- bearing；33- bearing (ball) cover；
34- back-up ring；40- output gear；
41- first splined hole；51- bolt；
52- alignment pin；53- bent axle；
54- flywheel；61- elastomer；
62- second splined hole；63 angular contact bearings；
71- atomizer；72- shoe cream room；
73- lubrication channel；
Specific embodiment
With specific embodiment, this utility model is described further below in conjunction with the accompanying drawings.
Embodiment one.
As depicted in figs. 1 and 2, the power takeoff of the compact conformation that the present embodiment provides, including housing 10 and be arranged on shell
Driving gear 20, transition gear 30 and the output gear 40 engaging in body 10 and successively, wherein output gear 40 are located at transition tooth
Above the side of wheel 30, driving gear 20 is located at the side-lower of transition gear 30, and driving gear 20 and output gear 40 position respectively
Both sides in transition gear 30.
It is provided with attachment structure, also the attachment structure of as power takeoff and electromotor between driving gear 20 and electromotor.
Specifically, the power takeoff of the present embodiment also include on bolt 51 and alignment pin 52, and driving gear 20 offering respectively perforation and
Location hole, the quantity of perforation can be arranged according to actual needs, in the present embodiment, is perforated with five, certainly corresponding
Bolt 51 also has five, five perforation centered on the axis of driving gear 20 circumference on driving gear 20, location hole
Only one of which, is located therein between two perforation.Each bolt 51 be respectively interposed each perforation on, and the two ends of each bolt respectively with
The flywheel of electromotor and bent axle connect, and alignment pin 52 is interspersed in positioning in the hole, and the two ends of alignment pin 52 are also respectively interposed and are sending out
On the flywheel and bent axle of motivation.
Accordingly, the electromotor being connected with the power takeoff of the present embodiment needs with bent axle 53 and flywheel 54, on flywheel 54
Also offer perforation, this perforation is also had five and corresponded with the perforation on driving gear 20, and bent axle 53 offers five
With the one-to-one screwed hole of perforation on flywheel 54 or driving gear 20, that is, each screwed hole also with the axis of driving gear 20 be
Center circumferential is arranged on bent axle 53, and meanwhile, bent axle 53 is corresponding with the location hole being on driving gear 20 on flywheel 54
Also offer location hole at position, offer location hole respectively on the correspondence position of bent axle 53, flywheel 54 and driving gear 20,
It should be noted that generally there are five circumference cloth due to directly buying from the market on the bent axle 53 of the electromotor obtaining
The screwed hole put, in actual production, only need to be in the position according to the screwed hole on bent axle 53 on flywheel 54 and driving gear 20
Open up and bore a hole.Each bolt 51 sequentially pass through on flywheel 54 and driving gear 20 corresponding perforation and spiral be connected to corresponding
On screwed hole, alignment pin 52 is interspersed on the location hole of flywheel 54, driving gear 20 and bent axle 53 successively, realizes electromotor with this
Connection and power takeoff between, compact conformation and stability is preferable.
Transition gear 30 is arranged in housing 10 by transition wheel shaft 31, and that is, the power takeoff of the present embodiment also includes being fixed on
Transition wheel shaft 31 in housing 10, transition wheel shaft 31 is to be arranged with bearing 32 and bearing (ball) cover on trapezoid shaft, and transition wheel shaft 31
33, its middle (center) bearing 32 is located between bearing (ball) cover 33 and the step surface of transition wheel shaft 31, and transition gear 30 is sheathed over bearings 32.
Preferably, in the present embodiment, bearing 32 has two, and is all cylinder roller bearing, sets between two bearings 32
It is equipped with the back-up ring 34 being fixed on transition gear 30, two bearings 32 both can be isolated from each other by back-up ring 34, prevented also from transition
Gear 30 produces axial jump during rotating.
Output gear 40 is arranged in housing 10 by angular contact bearing 63, and output gear 40 and plunger displacement pump or hydraulic pump
Power transmission shaft between on be provided with transmission connecting structure, specifically, the power takeoff of the present embodiment also includes elastomer 61, and export
First splined hole 41 coaxial with output gear 40 is provided with gear 40.It is provided with the lateral surface of elastomer 61 and the first flower
First spline of keyhole 41 cooperation, elastomer 61 is further opened with the power transmission shaft cooperation with plunger displacement pump or hydraulic pump and and elastomer
61 the second coaxial splined holes 62, the first spline is interspersed in the first splined hole 41, and output gear 40, the first splined hole 41 and
Second splined hole 62 is mutually coaxially arranged.
Need on the power transmission shaft of plunger displacement pump or hydraulic pump arrange with second splined hole cooperation the second spline, the first spline and
Interference fits or interference fit can be adopted between first splined hole 41 and between the second spline and the second splined hole 62.So may be used
Being rigidly connected between output gear 40 and power transmission shaft is changed to be flexibly connected, assembling is preferable, and the buffering of elastomer is made
With the high frequency strenuous vibration that spline and splined hole produce can be reduced to the motor element on plunger displacement pump or hydraulic pump and sealing member
Impact, plunger displacement pump or hydraulic pump output characteristics are also more steady, the service life of plunger displacement pump or hydraulic pump can be extended 3-5.
Preferably, in the present embodiment, the first splined hole 41 and/or the second splined hole 62 have involute spline, gradually open
The use of line spline contributes to being lifted stability and the reliability of attachment structure.
Additionally, as shown in Figure 1-Figure 3, the power takeoff that the present embodiment provides also has self lubricating system, this self lubricating system
Including the lubrication system of low level gear, the lubrication system of high-order gear and three kinds of structures of storage type lubrication system, specifically, housing
The bottom of 10 inner chamber is provided with the oil groove (not shown) filling lubricating oil, and the bottom of driving gear 20 is immersed in this oil groove
Interior, during use, the lubricating oil in oil groove can be adsorbed on the gear teeth of driving gear 20, and is carried with the rotation of driving gear 20
To the upper end of driving gear 20, then flow down under gravity, moistens to driving gear 20 and corresponding bearing
Sliding, said structure is the lubrication system of low level gear.
The intracavity sidewall of housing 10 is at the corresponding position of the meshing point between output gear 40 and transition gear 30
It is provided with fueller, certainly, fueller can also be located at the position corresponding with the bottom of output gear 40.In this reality
Apply in example, fueller is atomizer 71, that is, atomizer 71 is arranged between housing 10 and output gear 40 and transition gear 20
The corresponding position of meshing point at.Atomizer 71 is connected with the oil supply pipe outside power takeoff, and its injection direction is towards output
Meshing point between gear 40 and transition gear 20, certainly, specific spray angle needs the class according to actual atomizer 71
Type is configured, for example, can parabolically spray the atomizer of lubricating oil, now it is ensured that this parabolical terminal is located at output
Meshing point between gear 40 and transition gear 20 is it may be preferable to be located on the flank of tooth upward of transition gear 20 corresponding teeth.With
When, the direction of rotation of output gear 40 is through nibbling between output gear 40 and transition gear 30 from the lower extreme point of output gear 40
Chalaza is to the upper extreme point direction of output gear 40, for example, when above output gear 40 being located at the right side of transition gear 30, output
The direction of rotation of gear 40 should be counterclockwise, conversely, then the direction of rotation of output gear 40 should be clockwise.Use
When, the lubricating oil that atomizer 71 sprays can adsorb on the gear teeth of output gear 40, and is carried with the rotation of output gear 40
The upper end of dynamic output gear 40, then flow down under gravity, moistens to output gear 40 and corresponding bearing
Sliding, said structure is the lubrication system of high-order gear.
It should be noted that the lubrication system of above-mentioned high position gear can be not only used in power takeoff it is also possible to be used for it
In the gear-box of his type, as long as this gear-box includes second gear, the first gear engaging successively, and first gear is located at
Above the side of second gear, specifically, setting fueller is located at the position corresponding with the bottom of first gear, with
Sample, fueller is preferably atomizer, and the meshing point that atomizer is arranged between first gear and second gear is corresponding
Position at, the injection direction of atomizer is towards the meshing point between first gear and second gear, the rotation side of first gear
To for from the lower extreme point of first gear through upper extreme point direction from the meshing point between first gear and second gear to first gear.
Groove is further opened with housing 10, forms shoe cream room 72 between groove and bearing (ball) cover 33, fill in shoe cream room 72
Lubricating oil, and be located at atomizer 71 lower section, be easy to shoe cream room 72 accept from atomizer 71 drip or atomizer 71 be injected in defeated
Go out to reflect the lubricating oil of drippage on gear 40 or transition gear 30.Offer on shoe cream room 72 transition wheel shaft 31 with shoe cream room 72 even
Logical lubrication channel 73, towards bearing 32, the other end is connected the opening of lubrication channel 73 one end with shoe cream room 72.In the present embodiment
In, the opening up arrangement of lubrication channel 73 one end towards bearing 32 and be located at two bearings 32 between, shoe cream room 72 simultaneously
Interior lubricating oil liquid level is higher than the horizontal level of the upper extreme point of transition wheel shaft 31.During use, the lubricating oil in shoe cream room 72 is in liquid
Pressure effect is lower to overflow from lubrication channel 73 towards the opening of bearing 32 one end, bearing 32 is lubricated, overflows to axle simultaneously
Hold the lubricating oil on 32 also can flow down on transition wheel shaft 31, transition wheel shaft 31 be lubricated under gravity, on
State structure and be storage type lubrication system.
Preferably, for above-mentioned storage type lubrication system, can also be respectively arranged with two opposite sides of bearing 32
It is set in the baffle ring on transition wheel shaft 31, the opening of lubrication channel 73 one end towards bearing 32 is located between two baffle rings, and
Form oil storage tank between two baffle rings.Certainly, the lubricating oil liquid level in shoe cream room 72 needs the upper extreme point higher than baffle ring, so,
Lubrication in lubrication channel 73 has can first fill oil storage tank, then overflow to bearing 32, bearing 32 to be entered from the upper end of oil storage tank
Row lubrication, the lubricating oil in oil storage tank obtains certain centrifugal force as well as the rotation of transition gear 30 simultaneously, to transition
Gear 30 and transition wheel shaft 31 are lubricated, and not only lubricant effect is preferable for this lubrication system, and has certain radiating effect,
The heat that i.e. pinion rotation produces can be pulled away with the flowing of lubricating oil.
Embodiment two.
The present embodiment provides a kind of transmission connecting structure of gear, this structure and output gear 40 and plunger in embodiment one
Be provided with transmission connecting structure between pump or the power transmission shaft of hydraulic pump identical, specifically, this structure include gear and with this tooth
Take turns the power transmission shaft that is in transmission connection, and on this gear setting coaxial with this gear have the first splined hole.
This structure also includes elastomer, and this elastomer is provided with the first spline with the first splined hole cooperation, this elasticity
Second splined hole is further opened with body, power transmission shaft is provided with the second spline with the second splined hole cooperation, the first spline interts
In the first spline in the hole, the second spline is interspersed in the second spline in the hole, and it is mutually coaxial to assemble backgear, elastomer and power transmission shaft
Arrangement.Joined using interference fits or interference between first spline and the first splined hole and between the second spline and the second splined hole
Close.
Preferably, in the present embodiment, the first spline and/or the second spline are involute spline.
Being rigidly connected between gear and power transmission shaft can be changed to flexible company by the transmission connecting structure that the present embodiment provides
Connect, assembling is preferable, and the cushioning effect of elastomer can reduce the high frequency strenuous vibration that spline and splined hole produce, output characteristics
Also more steady, elastomer is interspersed in gear the first spline by being arranged on elastomer in addition, and structure is more compact.
Above in conjunction with accompanying drawing, this utility model is described in detail, but embodiment of the present utility model not only
It is limited to above-mentioned embodiment, those skilled in the art can make various modifications to this utility model according to prior art, such as will
Atomizer 71 in embodiment one is changed to other fuellers etc., and these broadly fall into protection domain of the present utility model.
Claims (6)
1. a kind of power takeoff of compact conformation, the driving gear including housing and being arranged in described housing and engaging successively,
Transition gear and output gear, it is characterised in that also including bolt, described driving gear offer perforation respectively, described spiral shell
Bolt is interspersed in described perforation, and the two ends of described bolt are connected with the flywheel of electromotor and bent axle respectively.
2. the power takeoff of compact conformation as claimed in claim 1, it is characterised in that described be perforated with five, is worn described in five
Hole centered on the axis of described driving gear circumference on described driving gear.
3. the power takeoff of compact conformation as claimed in claim 1 is it is characterised in that also include alignment pin, described driving gear
On offer location hole, described alignment pin is interspersed in described positioning in the hole, and the two ends of described alignment pin are respectively interposed and are starting
On the flywheel and bent axle of machine.
4. the power takeoff of the compact conformation as described in any claim in claim 1-3 is it is characterised in that also include elasticity
Body, described output gear is provided with the first splined hole, and described elastomer is provided with the with described first splined hole cooperation
One spline, described elastomer is further opened with the second splined hole with the cooperation of the power transmission shaft of plunger displacement pump or hydraulic pump, and described first
Spline is interspersed in described first spline in the hole, and described output gear, described first splined hole and described second splined hole are mutually same
Axle is arranged.
5. the power takeoff of compact conformation as claimed in claim 4 is it is characterised in that described first splined hole and/or described
Two splined holes have involute spline.
6. the power takeoff of compact conformation as claimed in claim 4 is it is characterised in that described first spline and described first spline
Gap cooperation, interference fits or interference fit is adopted between hole and between described second spline and described second splined hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620911982.4U CN205937750U (en) | 2016-08-20 | 2016-08-20 | Compact structure's power takeoff |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620911982.4U CN205937750U (en) | 2016-08-20 | 2016-08-20 | Compact structure's power takeoff |
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| Publication Number | Publication Date |
|---|---|
| CN205937750U true CN205937750U (en) | 2017-02-08 |
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ID=57947732
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620911982.4U Active CN205937750U (en) | 2016-08-20 | 2016-08-20 | Compact structure's power takeoff |
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| Country | Link |
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| CN (1) | CN205937750U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224507A (en) * | 2016-08-20 | 2016-12-14 | 泉州鑫豪工程机械科技有限公司 | A kind of power takeoff of compact conformation |
-
2016
- 2016-08-20 CN CN201620911982.4U patent/CN205937750U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224507A (en) * | 2016-08-20 | 2016-12-14 | 泉州鑫豪工程机械科技有限公司 | A kind of power takeoff of compact conformation |
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