CN206112034U - Lubricating structure of high -order gear - Google Patents

Abstract

The utility model provides a power takeoff lubricating structure of high -order gear, 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 oil supply unit, output gear is located transition gear's side top, oil supply unit be located with output gear's the corresponding position department in lower part. Through setting up oil supply unit in the corresponding position department in the lower part with output gear, especially set up and output gear and transition gear between the casing of the corresponding position of mesh point on to injecing output gear's direction of rotation, lubricate driving gear and corresponding bearing with the help of the rotatory centrifugal force guide lubricating oil that produces of output gear, the technical scheme who sets up the oil circuit with the tradition on the casing compares, and structure and simple process, the low just lubrication effect of the processing degree of difficulty are better relatively.

Description

A kind of lubrication system of high-order gear

Technical field

This utility model is related to a kind of lubrication system, particularly a kind of lubrication system of power takeoff high position gear.

Background technology

On the special vehicles such as excavator, the traveling for electromotor for vehicle is not only needed to provide power, it is also desirable to start Machine provides some or all power to be used to drive miscellaneous part, and this is accomplished by being installed on the electromotor of this kind of special vehicle Power takeoff.

Traditional power takeoff generally includes driving gear, transition gear and the output gear for engaging successively and for lubricating The lubrication system of each gear, wherein lubrication system are typically more complicated.China such as Publication No. CN204226002U is practical A kind of engine torque extracting machine with built-in oil leab disclosed in new patent, including housing, shaft gear, oil pocket, fore bearing, Afterwards bearing, in housing forward end boss is set, and has the oil input channel of straight-through oil pocket on boss, and the external port of oil input channel is by sealing plug assembly Closing, has transition oil duct to lead to oil input channel on the front end face of boss, transition oil duct is corresponding with the oil-out on backgear room.It is described Oil input channel be stepped, a diameter of 2～4mm of inner side oil input channel of its close oil pocket, its outside a diameter of 7～9mm of oil input channel. Described sealing plug assembly includes plug screw and O-ring seal.Transition oil duct passes through assembly relation phase with backgear room oil-out Even, machine oil flows through successively backgear room oil-out, transition oil duct, stepped oil input channel, is then ejected into oil in auxiliary-drive casing body Chamber, so as to be lubricated to the bearing in power takeoff assembly.But because the housing of power takeoff is generally foundry goods, set in foundry goods The technique for putting oil circuit is complex, and difficulty of processing is relatively large, and lubricant effect is also to be improved.

In view of this, the applicant conducts in-depth research to the lubrication system of power takeoff, has this case to produce then.

Utility model content

The purpose of this utility model be a kind of structure is provided and process is simple, difficulty of processing be low and lubricant effect relatively The lubrication system of good power takeoff high position gear.

To achieve these goals, this utility model is adopted the following technical scheme that：

A kind of lubrication system of power takeoff high position gear, including housing and be arranged in the housing and engage successively Driving gear, transition gear and output gear, also including fueller, the output gear is located on the side of the transition gear Side, the fueller is located at the position corresponding with the bottom of the output gear.

Used as a kind of improvement of the present utility model, the fueller is atomizer, and the atomizer is arranged on the shell On body at the position corresponding with the meshing point between the output gear and the transition gear, the injection side of the atomizer To being from described defeated towards the direction of rotation of the meshing point between the output gear and the transition gear, the output gear Go out upper extreme point of the meshing point described in the lower extreme point Jing of gear between output gear and the transition gear to the output gear Direction.

Used as a kind of improvement of the present utility model, the driving gear is located at the side-lower of the transition gear.

Used as a kind of improvement of the present utility model, the driving gear and the output gear are located at respectively the transition tooth The both sides of wheel.

This utility model also provides a kind of structure and process is simple, difficulty of processing be low and the relatively good high position of lubricant effect The lubrication system of gear, the structure is adopted the following technical scheme that：

A kind of lubrication system of high-order gear, including the second gear and first gear that engage successively, it is characterised in that also Including fueller, the first gear is located at the side top of the second gear, and the fueller is located at and described first At the corresponding position in the bottom of gear.

As it is of the present utility model it is a kind of improve, the fueller is atomizer, the atomizer be arranged on it is described At the corresponding position of meshing point between first gear and the second gear, the injection direction of the atomizer is towards described Meshing point between first gear and the second gear, the direction of rotation of the first gear is under the first gear Upper extreme point direction of the meshing point described in end points Jing between first gear and the second gear to the first gear.

Using above-mentioned technical proposal, this utility model has the advantages that：

By the way that fueller is arranged at the position corresponding with the bottom of output gear, it is more particularly set on and output On the housing of the meshing point opposite position between gear and transition gear, and the direction of rotation of output gear is limited, by defeated The centrifugal force guiding lubricating oil for going out gear rotation generation is lubricated to driving gear and corresponding bearing, with tradition on housing The technical scheme for arranging oil circuit is compared, structure and process is simple, difficulty of processing are low and lubricant effect is relatively preferable.

Description of the drawings

Fig. 1 is the structural representation of the power takeoff of this utility model form touch；

Fig. 2 for the power takeoff of this utility model compact conformation positive structure diagram, broken section in figure, and being 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 arrow show lubrication in figure The flow direction of liquid.

Correspondence is indicated in each figure as follows：

10- housings；20- driving gears；

30- transition gears；31- transition wheel shafts；

32- bearings；33- bearing (ball) covers；

34- back-up rings；40- output gears；

The splined holes of 41- first；51- bolts；

52- alignment pins；53- bent axles；

54- flywheels；61- elastomers；

The splined holes of 62- second；63 angular contact bearings；

71- atomizers；72- shoe cream rooms；

73- lubrication channels；

Specific embodiment

Below in conjunction with the accompanying drawings this utility model is described further with specific embodiment.

Embodiment one.

As depicted in figs. 1 and 2, the power takeoff of the compact conformation that the present embodiment is provided, including housing 10 and it is arranged on shell Driving gear 20, transition gear 30 and the output gear 40 for engaging in body 10 and successively, wherein output gear 40 are located at transition tooth The side top of wheel 30, driving gear 20 is located at the side-lower of transition gear 30, and driving gear 20 and the difference of output gear 40 position In the both sides of transition gear 30.

Attachment structure is provided between driving gear 20 and electromotor, also the as attachment structure of power takeoff and electromotor. Specifically, the power takeoff of the present embodiment also include being offered respectively on bolt 51 and alignment pin 52, and driving gear 20 perforation and Location hole, the quantity of perforation can be arranged according to actual needs, in the present embodiment, be 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 is respectively interposed in each perforation, and the two ends of each bolt respectively with The flywheel of electromotor and bent axle connect, and alignment pin 52 is interspersed in location 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 is needed with bent axle 53 and flywheel 54, on flywheel 54 Also perforation is offered, the perforation also there are five and corresponds with the perforation on driving gear 20, and five are offered on bent axle 53 With the one-to-one screwed hole of perforation on flywheel 54 or driving gear 20, i.e., each screwed hole is also with the axis of driving gear 20 Center circumferential is arranged on bent axle 53, meanwhile, bent axle 53 be that location hole on driving gear 20 is corresponding on flywheel 54 Also to offer at position and offer location hole respectively on location hole, the i.e. correspondence position of bent axle 53, flywheel 54 and driving gear 20, It should be noted that due to generally there are five circumference cloth on the bent axle 53 of the electromotor for directly buying acquisition from the market 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 perforation.Each bolt 51 sequentially pass through on flywheel 54 and driving gear 20 it is corresponding perforation and spiral be connected to it is corresponding On screwed hole, alignment pin 52 is interspersed in successively on the location hole of flywheel 54, driving gear 20 and bent axle 53, and with this electromotor is realized Connection and power takeoff between, compact conformation and stability is preferable.

Transition gear 30 is arranged in housing 10 by transition wheel shaft 31, i.e., 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 arranged over bearings 32.

Preferably, in the present embodiment, bearing 32 has two, and is all cylinder roller bearing, sets between two bearings 32 The back-up ring 34 being fixed on transition gear 30 is equipped with, back-up ring 34 can both be isolated from each other on two bearings 32, prevented also from transition Gear 30 produces axial jump during rotation.

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 exports 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 The first spline that keyhole 41 coordinates, is further opened with coordinating and and elastomer with the power transmission shaft of plunger displacement pump or hydraulic pump on elastomer 61 61 the second coaxial splined holes 62, the first spline is interspersed in the first splined hole 41, and output gear 40, the and of the first splined hole 41 Second splined hole 62 is mutually coaxially arranged.

Need on the power transmission shaft of plunger displacement pump or hydraulic pump arrange with the second splined hole coordinate the second spline, the first spline and Can be using interference fits or interference fit 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 into flexible connection, assembling is preferable, and the buffering of elastomer is made With 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 into 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 lifting the stability and reliability of attachment structure.

Additionally, as shown in Figure 1-Figure 3, the power takeoff that the present embodiment is provided also has self lubricating system, the self lubricating system Lubrication system, three kinds of structures of lubrication system and storage type lubrication system of high-order gear including low level gear, specifically, housing The bottom of 10 inner chamber is provided with the oil groove (not shown) for filling lubricating oil, and the bottom of driving gear 20 is immersed in the oil groove Interior, when using, the lubricating oil in oil groove can be adsorbed on the gear teeth of driving gear 20, and as the rotation of driving gear 20 is by band 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 position corresponding with the meshing point between output gear 40 and transition gear 30 Fueller is provided with, certainly, fueller can also be located at the position corresponding with the bottom of output gear 40.In this reality In applying example, fueller is arranged between housing 10 and output gear 40 and transition gear 20 for atomizer 71, i.e. atomizer 71 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 the parabolical terminal is located at output Meshing point between gear 40 and transition gear 20, it may be preferable on the flank of tooth upward of the corresponding teeth of transition gear 20.Together When, the direction of rotation of output gear 40 is from nibbling between the lower extreme point Jing output gears 40 and transition gear 30 of output gear 40 Chalaza for example, when output gear 40 is located at the right side top of transition gear 30, is exported to the upper extreme point direction of output gear 40 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 as the rotation of output gear 40 is by band 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-order gear can be not only used in power takeoff, it is also possible to for it In the gear-box of his type, as long as the gear-box includes second gear, the first gear for engaging successively, and first gear is located at The side top of second gear, specifically, arranges fueller and is located at the position corresponding with the bottom of first gear, together 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 the upper extreme point direction from the meshing point between the lower extreme point Jing first gears and second gear of first gear to first gear.

Groove is further opened with housing 10, is formed between groove and bearing (ball) cover 33 and is filled in shoe cream room 72, shoe cream room 72 Lubricating oil, and positioned at the lower section of atomizer 71, be easy to shoe cream room 72 accept from atomizer 71 drip or atomizer 71 be injected in it is defeated Go out on gear 40 or transition gear 30 to reflect the lubricating oil of drippage.Offer on the transition wheel shaft 31 of shoe cream room 72 and connect with shoe cream room 72 Logical lubrication channel 73, towards bearing 32, the other end is connected the opening of the one end of lubrication channel 73 with shoe cream room 72.In the present embodiment In, lubrication channel 73 towards one end of bearing 32 opening up arrangement and between two bearings 32, while shoe cream room 72 Horizontal level of the interior lubricating oil liquid level higher than the upper extreme point of transition wheel shaft 31.When using, 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 the one end of bearing 32, bearing 32 is lubricated, while overflowing to axle Hold the lubricating oil on 32 also flow down on transition wheel shaft 31, can be lubricated under gravity to transition wheel shaft 31, on State structure and be storage type lubrication system.

Preferably, for above-mentioned storage type lubrication system, can be being respectively arranged with two opposite sides of bearing 32 The baffle ring being set on transition wheel shaft 31, lubrication channel 73 is located between two baffle rings towards the opening of one end of bearing 32, and Oil storage tank is formed 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 from the upper end of oil storage tank bearing 32 is entered on bearing 32 Row lubrication, while the lubricating oil in oil storage tank also can obtain certain centrifugal force with the rotation of transition gear 30, to transition Gear 30 and transition wheel shaft 31 are lubricated, and not only lubricant effect is preferable for this lubrication system, and with certain radiating effect, The heat that i.e. pinion rotation is produced can be pulled away with the flowing of lubricating oil.

Embodiment two.

The present embodiment provides a kind of transmission connecting structure of gear, the structure and output gear 40 and plunger in embodiment one Transmission connecting structure is provided between pump or the power transmission shaft of hydraulic pump identical, specifically, the structure include gear and with the tooth The power transmission shaft that is connected of wheel, and arrange on the gear and coaxial with the gear have the first splined hole.

The structure also includes elastomer, and the first spline coordinated with the first splined hole, the elasticity are provided with the elastomer The second splined hole is further opened with body, the second spline coordinated with the second splined hole is provided with power transmission shaft, the first spline interts In the first splined hole, the second spline is interspersed in the second splined hole, and it is mutually coaxial to assemble backgear, elastomer and power transmission shaft Arrangement.Matched somebody with somebody 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 is provided Connect, assembling is preferable, and the cushioning effect of elastomer can reduce the high frequency strenuous vibration that spline and splined hole are produced, output characteristics Also more steady, in addition the first spline by being arranged on elastomer is interspersed in elastomer in gear, and structure is more compact.

This utility model is described in detail above in conjunction with accompanying drawing, but embodiment of the present utility model and not only It is limited to above-mentioned embodiment, those skilled in the art can make various modifications according to prior art to this utility model, such as will Atomizer 71 in embodiment one is changed to other fuellers etc., and these belong to protection domain of the present utility model.

Claims (6)

1. a kind of lubrication system of high-order gear, including housing and the driving tooth for being arranged in the housing and engaging successively Wheel, transition gear and output gear, it is characterised in that also including fueller, the output gear is located at the transition gear Side top, the fueller be located at the position corresponding with the bottom of the output gear at.

2. the lubrication system of high position gear as claimed in claim 1, it is characterised in that the fueller is atomizer, institute State atomizer and position corresponding with the meshing point between the output gear and the transition gear on the housing is set Place, the injection direction of the atomizer is towards the meshing point between the output gear and the transition gear, the output gear The direction of rotation of wheel is the meshing point described in lower extreme point Jing from the output gear between output gear and the transition gear To the upper extreme point direction of the output gear.

3. the lubrication system of high position gear as claimed in claim 2, it is characterised in that the driving gear is located at the transition The side-lower of gear.

4. the lubrication system of high position gear as claimed in claim 3, it is characterised in that the driving gear and the output gear Wheel is respectively positioned at the both sides of the transition gear.

5. a kind of lubrication system of high-order gear, including the second gear and first gear that engage successively, it is characterised in that also wrap Fueller is included, the first gear is located at the side top of the second gear, and the fueller is located at and first tooth At the corresponding position in the bottom of wheel.

6. the lubrication system of high position gear as claimed in claim 5, it is characterised in that the fueller is atomizer, institute State atomizer to be arranged at the position corresponding with the meshing point between the first gear and the second gear, the oil spout The injection direction of mouth is towards the meshing point between the first gear and the second gear, the direction of rotation of the first gear It is the meshing point described in the lower extreme point Jing from the first gear between first gear and the second gear to first tooth The upper extreme point direction of wheel.