CN102748432A - Speed reducer - Google Patents
Speed reducer Download PDFInfo
- Publication number
- CN102748432A CN102748432A CN201210258630XA CN201210258630A CN102748432A CN 102748432 A CN102748432 A CN 102748432A CN 201210258630X A CN201210258630X A CN 201210258630XA CN 201210258630 A CN201210258630 A CN 201210258630A CN 102748432 A CN102748432 A CN 102748432A
- Authority
- CN
- China
- Prior art keywords
- ring
- speed reducer
- secondary planet
- planet
- level
- 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.)
- Granted
Links
Images
Landscapes
- Retarders (AREA)
Abstract
The invention discloses a speed reducer, which comprises a primary planet row and a secondary planet row, which are both provided with planet wheels, planet carriers, planet shafts and sun wheels, wherein the sun wheel of the primary planet row is connected with a power input end, the speed reducer further comprises an inner gear ring connected with a power output end, the inner gear ring is provided with a primary inner tooth and a secondary inner tooth, the primary inner tooth is engaged with the planet wheel of the primary planet row, and the secondary inner tooth is engaged with the planet wheel of the secondary planet row. According to the speed reducer provided by the invention, the primary planet row and the secondary planet row share one integrated inner gear ring, in comparison with a project of sheathing a primary gear ring into a secondary gear ring in the prior art, the inner gear ring structure can be simplified, so that layout of the inner gear ring is more compact on the speed reducer, and the space of the whole machine is reduced, thus the volume of the speed reducer is reduced, the speed reducer is minimized and convenient for installation, user requirements are satisfied, and the application range is expanded; furthermore, the integrated inner gear ring has high reliability and small power loss, and is beneficial for improving the transmission efficiency.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly a kind of speed reducer.
Background technique
Speed reducer is used very extensively in technical field of engineering machinery, such as, be equipped with speed reducer in the engineering machinery such as hoist, excavator, road roller.
Speed reducer is as the term suggests be exactly the speed reduction with input.Power equals the product of speed and moment of torsion, and in the drive path road, because power is constant, when speed reduced, moment of torsion was improved, and the effect of speed reducer mainly is exactly to slow down to increase to turn round.
Speed reducer generally comprises two planet rows, i.e. one-level planet row and secondary planet row.Two planet rows include planet wheel, planet carrier, planet axis and sun gear.Planet carrier is a kind of frame-type structure, and the mounting hole of framework both sides is concentric, and size is also identical, works to support planet wheel.The back shaft of planet wheel (planet axis) just is installed on the mounting hole of planet carrier, and planet wheel quantity is identical with mounting hole quantity, planet axis quantity on the planet carrier; Several planet wheel specifications on the same planet carrier are identical.Planet carrier can be used as revolving part, promptly rotates with the rotation of planet wheel, such as the planet carrier on the one-level planet row; Planet carrier also can be stationary components, such as the planet carrier on the secondary planet row.Speed reducer also comprises ring gear, and at present, the ring gear of speed reducer comprises the secondary gear ring with the engagement of secondary planet row upper planet wheel, and arranges the primary annulus of upper planet wheel engagement with the one-level planet.Primary annulus is fastened on the inside of secondary gear ring through fastening pieces such as bolt, bearing pins.
The transmission of power of above-mentioned speed reducer is in proper order: power intake-one-level sun gear-one-level planet wheel-primary planet carrier-secondary sun gear-secondary planet wheel-secondary ring gear-clutch end.
There is following technical problem in the structure of above-mentioned speed reducer: the one-level ring gear places the inside of secondary ring gear, need take than large space, makes that the volume of whole speed reducer is bigger; And fix through fastening pieces such as bolt, bearing pins between secondary gear ring and the one-level ring gear, fastening reliability is lower, and kinetic equation loss is bigger, has reduced transmission efficiency.
In view of this, how improving the ring gear structure of speed reducer, to reduce occupation space, is the technical problem that those skilled in the art need to be resolved hurrily.
Summary of the invention
The object of the invention is for providing a kind of speed reducer, and the one-level planet row and the secondary planet of this speed reducer are arranged a shared ring gear, and compact structure takies less complete machine space.
For reaching the object of the invention, speed reducer provided by the invention comprises one-level planet row and secondary planet row, and one-level planet wheel, primary planet carrier, one-level planet axis, one-level sun gear are drawn together in the package of said one-level planet; Secondary planet wheel, secondary planet frame, secondary planet axle, secondary sun gear are drawn together in said secondary planet package; Speed reducer also comprises clutch end and power intake; Said one-level sun gear is connected with said power intake; It is characterized in that speed reducer also comprises the ring gear that is connected with clutch end, said ring gear is provided with one-level internal tooth and secondary internal tooth; Said one-level internal tooth and the engagement of said one-level planet wheel, said secondary internal tooth and the engagement of said secondary planet wheel.
Preferably, said power intake connects spline housing, the said one-level sun gear of said spline housing overcoat, and said spline housing is provided with internal spline, and said one-level sun gear has the external splines that cooperates with this internal spline.
Preferably, said speed reducer also is provided with the friction plate group, and said friction plate group comprises rotating plate and the driven plate that matches, and said rotating plate is connected with said spline housing; Said driven plate and speed reducer body relative fixed;
Said speed reducer also is provided with piston, spring, and the braking oil pocket that is communicated with the speed reducer working oil path; The body of the relative speed reducer of one end of said spring is fixed, and an end pushes against piston in said friction plate group; Said piston has the compression face towards said friction plate group, and said braking oil pocket is positioned at said compression face place.
Preferably, said power intake penetrates to drive said one-level sun gear from the center hole of said secondary planet frame; Said spline housing is located in the said secondary planet frame center hole, and said friction plate group is arranged between the inwall of said spline housing and said secondary planet frame.
Preferably; Also comprise the ring-type pressing plate, said ring-type pressing plate places in the center hole of said secondary planet frame, and the inwall of the periphery wall of said ring-type pressing plate and said secondary planet frame is fixed; And an end of said spring contacts at said ring-type pressing plate, the other end said piston of conflicting.
Preferably, also comprise the ring-type back-up ring, the inwall of said secondary planet frame is provided with annular recess, and said ring-type back-up ring is embedded in the said annular recess; Said ring-type back-up ring and said spring are positioned at the both sides of said ring-type pressing plate, and said ring-type back-up ring is adjacent to said ring-type pressing plate.
Preferably; The inwall of said secondary planet frame forms towards the step surface of inner chamber protrusion; Said piston has the step surface relative with this step surface; The inner circle wall sealing of the periphery wall of said piston and said secondary planet frame, the step surface of said piston is said compression face, forms said braking oil pocket between the step surface of the step surface of said piston and said secondary planet frame inwall.
Preferably, said secondary planet frame and secondary planet axle are monolithic construction.
Preferably, said clutch end is and the fixing ring-type output rack of said ring gear to offer the lubricating oil duct that is communicated with said one-level planet row and said secondary planet row on the said output rack.
Preferably, said secondary planet frame has the big footpath section and the path section of the formation periphery step surface that joins, and said secondary planet axle and said path section are joined; The said secondary planet axle of said ring gear overcoat, the said path section of said output rack overcoat, and an end of said output rack and said ring gear are fixed the step surface sealing of the end face of the other end and said big footpath section.
Preferably, the end face of said output rack and the big footpath of said secondary planet frame section end face are equipped with groove, and two groove notches form the annular seal chamber relatively, are equipped with seal ring, floating sealing ring in the two said grooves; The sealing of fitting of the axial end of two said floating sealing rings, two said floating sealing rings all offer circular groove on the perisporium of speed reducer periphery, and two said circular grooves are obliquely installed with respect to the sealing surface of two said floating sealing rings, and the notch of two said circular grooves is opposing; Said seal ring is squeezed between the cell wall of circular groove and corresponding said groove of said floating sealing ring.
Preferably, also be provided with bearing, the inner ring overcoat of said bearing also is fixed in the periphery wall of said secondary planet axle, and the outer ring of said bearing is said secondary planet wheel.
Speed reducer in this invention is arranged a shared integrated type ring gear with one-level planet row and secondary planet, is placed in the scheme in the secondary gear ring compared to primary annulus of the prior art, can simplify the ring gear structure; Make that the layout of ring gear on speed reducer is more compact; Reduce taking the space of complete machine, thereby reduce the volume of speed reducer, make it be tending towards miniaturization and be convenient to install; Meet consumers' demand enlarging application range; And the reliability of integrated type ring gear is high, and power loss is little, helps to improve transmission efficiency.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of speed reducer provided by the present invention;
Fig. 2 is the linkage structure schematic representation of one-level planet row and secondary sun gear, ring gear among Fig. 1;
Fig. 3 is the structural representation of secondary planet row and ring gear among Fig. 1;
Fig. 4 is provided with the structural representation of Parking Brake for secondary planet frame among Fig. 1;
Fig. 5 is the structural representation of secondary planet frame mechanism among Fig. 1;
Fig. 6 is the assembly structure schematic representation of secondary planet axle and secondary planet wheel among Fig. 3.
Among Fig. 1-6:
1 lubricating oil duct; 2 ring gears; 21 one-level internal tooths; 22 secondary internal tooths; 3 one-level planets row; 31 one-level planet wheels; 32 primary planet carriers; 33 one-level sun gears; 34 one-level planet axis; 4 secondary planet row; 41 secondary planet wheel; 42 bearings; 43 secondary planet frame mechanisms; 431 first floating sealing bases; 432 secondary planet framves; 433 secondary planet axles; 44 secondary sun gears; 5 Parking Brakes; 50 braking oil ducts; 51 ring-type back-up rings; 52 ring-type pressing plates; 53 pistons; 54 driven plates; 55 rotating plates; 56 first seal rings; 57 springs; 58 second seal rings; 59 braking oil pockets; 61O shape circle; 62 floating sealing rings; 7 spline housings; 8 bearing pack; 9 output racks; 91 second floating sealing bases
Embodiment
Core of the present invention is for providing a kind of speed reducer, and the one-level planet row and the secondary planet of this speed reducer are arranged a shared ring gear, and compact structure takies less complete machine space.
In order to make those skilled in the art understand technological scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.
Please refer to Fig. 1-3, Fig. 1 is the structural representation of a kind of embodiment of speed reducer provided by the present invention; Fig. 2 is the linkage structure schematic representation of one-level planet row and secondary sun gear, ring gear among Fig. 1; Fig. 3 is the structural representation of secondary planet row and ring gear among Fig. 1.
Speed reducer among this embodiment; Comprise one-level planet row 3 and secondary planet row 4; One-level planet row 3 comprises one-level planet wheel 31, primary planet carrier 32, one-level planet axis 34, one-level sun gear 33, wherein, and the engagement of the external tooth of the external tooth of one-level planet wheel 31 and one-level sun gear 33; Secondary planet row 4 comprises secondary planet wheel 41, secondary planet frame 432, secondary planet axle 433, secondary sun gear 44, and secondary planet is taken turns 41 external tooths and the engagement of secondary sun gear 44 external tooths, and secondary sun gear 44 is fixing, as shown in Figure 2 with primary planet carrier 32.
Speed reducer also comprises clutch end and power intake, and one-level sun gear 33 is connected with power intake, and under motivational drive, one-level sun gear 33 drives one-level planet wheel 31 and rotates with primary planet carrier 32.Speed reducer also comprises the ring gear 2 that is connected with clutch end, and ring gear 2 is provided with one-level internal tooth 21 and secondary internal tooth 22, and one-level internal tooth 21 meshes with the external tooth of one-level planet wheel 31, and secondary internal tooth 22 is taken turns 41 external tooth engagement with secondary planet.
As can be seen from Figure 1; Clutch end among this embodiment is the output rack of fixing with ring gear 29; One-level sun gear 33 drives one-level planet wheel 31 and rotates, and one-level planet wheel 31 drives primary planet carrier 32 rotations along ring gear 2 revolution, and primary planet carrier 32 drives secondary sun gear 44 and rotates; And then drive 44 rotations of secondary planet wheel, drive ring gear 2 at last and rotate with output rack 9.Then the power transfer path of this speed reducer is: one-level sun gear 33-one-level planet wheel 31-primary planet carrier 32-secondary sun gear 44-secondary planet wheel 41-ring gear 2-output rack 9.
Among this embodiment, row 3 arranges 4 shared integrated type ring gears 2 with secondary planet with the one-level planet, is placed in the scheme in the secondary gear ring compared to primary annulus of the prior art; Can simplify ring gear 2 structures, make that the layout of ring gear 2 on speed reducer is more compact, reduce the space that takies complete machine; Thereby reduce the volume of speed reducer; Make it be tending towards miniaturization and be convenient to install, meet consumers' demand enlarging application range; And the reliability of integrated type ring gear 2 is high, and power loss is little, helps to improve transmission efficiency.
Further, the power intake of speed reducer can be connected with one-level sun gear 33 through spline housing 7.As shown in Figure 1, spline housing 7 overcoat one-level sun gears 33, spline housing 7 is provided with internal spline, and one-level sun gear 33 has the external splines that cooperates with this internal spline.Spline housing 7 is convenient to transmission of power to the one-level sun gear 33 with power intake.
On this basis, please refer to Fig. 4, Fig. 4 is provided with the structural representation of Parking Brake for secondary planet frame among Fig. 1.
This Parking Brake 5 mainly comprises friction plate group, piston 53, spring 57, braking oil pocket 59.The friction plate group comprises the rotating plate 55 and driven plate 54 that matches, and when rotating plate 55 compressed with driven plate 54, the rubbing surface of the two produced frictional force, realized braking function through this frictional force, and when rotating plate 55 unclamped with driven plate 54, the two was separated from each other.Wherein, rotating plate 55 is connected with spline housing 7 on the one-level sun gear 33; Driven plate 54 and speed reducer body relative fixed, among Fig. 3, driven plate 54 relative secondary planet framves 432 are fixed, and secondary planet frame 432 is fixed on the speed reducer body.The body of the relative speed reducer of one end of the spring 57 of Parking Brake 5 is fixed; The other end pushes against piston 53 in the friction plate group, promptly utilizes the elastic force of spring 57 that piston 53 is pressed on the friction plate group, and then compresses rotating plate 55 and driven plate 54; Rotating plate 55 can't rotate; And then spline housing 7 also can't be rotated, promptly unpowered output, thereby the parking braking function of realization speed reducer.In addition, braking oil pocket 59 is communicated with the working oil path of speed reducer, and when then speed reducer was worked, working oil path provided high pressure oil, and braking oil pocket 59 is communicated with high-pressure oil passages, when speed reducer is shut down, and working oil path oil return pressure release, the also correspondingly oil return pressure release of braking oil pocket 59; And piston 53 has the compression face towards the friction plate group, and braking oil pocket 59 is positioned at the compression face place, and then braking oil pocket 59 internal pressure oil, to act on the elastic force of pressure direction and spring 57 of piston 53 in the opposite direction.
The working principle of this Parking Brake 5 is following: when speed reducer is worked; Feed high pressure oil in the braking oil pocket 59, high pressure oil promotion piston 53 overcomes spring 57 elastic force and moves to left, and promptly cancels piston 53 and acts on the impacting force on the friction plate group; Rotating plate 55 separates with driven plate 54; Spline housing 7 can rotate, and the power of power intake can be passed to one-level sun gear 33 through spline housing 7, and then according to the transmission of power sequence delivery; When speed reducer is shut down, the 59 oil return pressure releases of braking oil pocket, spring 57 resets; Promote piston 53 and move to right, so that piston 53 pressing friction sheet groups, rotating plate 55 is chimeric fixing with driven plate 54; Spline housing 7 is fixed with respect to the speed reducer body, can't continue rotation, reaches the effect of braking.
It is thus clear that this Parking Brake 5 can be realized braking automatically through the working procedure of speed reducer self, need not to be provided with specially the parking braking parts, also need not to control separately, has reduced the complete machine number of components, has reduced the complete machine cost.
In the foregoing description; Power intake can penetrate to drive one-level planet row 3 one-level sun gear 33 from the center hole that secondary planet is arranged 4 planet carrier; Like Fig. 1, shown in 4; Spline housing 7 is located in secondary planet frame 432 center holes, and one-level sun gear 33 1 ends are positioned at secondary planet frame 432, and the other end runs through primary planet carrier 32.So during design motivation input end input mode, the friction plate group can be arranged between the inwall of spline housing 7 and secondary planet frame 432, and secondary planet frame 432 is fixed with the speed reducer body, and driven plate 54 is got final product with the inwall of secondary planet frame 432 is fixing; Parking Brake 5 parts such as piston 53, spring 57 also can correspondingly place in the center hole of secondary planet frame 432.Then this kind structure has relatively easily realized the installation of Parking Brake 5 each parts, and Parking Brake 5 each parts can place secondary planet frame 432 inside, under the prerequisite that does not take the complete machine space, is provided with Parking Brake 5.Can expect that power intake is arranged the input of 3 sides from the one-level planet and also is fine, and from Fig. 1, need Parking Brake 5 each parts be located at the right side of speed reducer, obviously, the space availability ratio of this kind set-up mode is lower.
On this basis, ring-type pressing plate 52 can be set further, conflict for spring 57 and locate.Spring 57 is when compressing piston 53; Need the relative speed reducer body of an end to fix, then this moment, can ring-type pressing plate 52 be placed in the secondary planet frame 432; And the periphery wall of ring-type pressing plate 52 and the inwall of secondary planet frame 432 fixed; And an end of spring 57 contacts at ring-type pressing plate 52, the other end conflict piston 53, and promptly spring 57 places between ring-type pressing plate 52 and the piston 53.Can find out that from Fig. 1,4 offer the groove of notch towards ring-type pressing plate 52 on the piston 53, this groove and ring-type pressing plate 52 have formed a spring chamber, are used to put spring 57.
In order to improve fixing, ring-type back-up ring 51 can also be set, as shown in Figure 4, the inwall of secondary planet frame 432 is provided with annular recess, and ring-type back-up ring 51 is embedded in the annular recess, and then ring-type back-up ring 51 can be firmly fixed in the secondary planet frame 432.In addition, this ring-type back-up ring 51 and spring 57 are positioned at the both sides of ring-type pressing plate 52, and ring-type back-up ring 51 is adjacent to ring-type pressing plate 52.When high pressure oil overcame spring 57 elastic force piston 53 is pushed into ring-type pressing plate 52 places, ring-type back-up ring 51 and ring-type pressing plate 52 can play the effect of support piston 53 jointly, avoid the excessive damage ring-type of pressure pressing plate 52.
Can continue with reference to figure 4; The inwall of secondary planet frame 432 can process towards the step surface of its inner chamber protrusion, and piston 53 can have the step surface relative with this step surface, and then the step surface of piston 53 is a compression face; The inner circle wall sealing of the periphery wall of piston 53 and secondary planet frame 432; Among Fig. 4,, then can form braking oil pocket 59 between the step surface of the step surface of piston 53 and secondary planet frame 432 inwalls through first seal ring 56 and 58 sealings of second seal ring.The set-up mode of this kind braking oil pocket 59 is comparatively simple, and the action effect of high pressure oil is higher.Can expect; On the periphery wall of piston 53, annular groove is set; The inner circle wall of annular groove and secondary planet frame 432 forms braking oil pocket 59 and also is fine, but this kind mode receives piston 53 travel limits, and sealing effect and high pressure oil action effect are inferior to this embodiment.Correspondingly, braking oil duct 50 can be set on secondary planet frame 432, so that the high pressure oil of speed reducer working oil path is introduced the 59 interior hydraulic oil oil returns that also supply in the braking oil pocket 59 of braking oil pocket.
To above-mentioned each embodiment; Secondary planet frame 432 can be a monolithic construction with secondary planet axle 433; Please refer to Fig. 5; Fig. 5 is the structural representation of secondary planet frame mechanism among Fig. 1, can find out, secondary planet frame mechanism 43 is the structure after secondary planet frame 432 is integrally formed with secondary planet axle 433.Can form all-in-one-piece secondary planet frame 432 and secondary planet axle 433 through the forging mode; Carry out fine finishing after the forging; Make all-in-one-piece secondary planet frame mechanism 43 possess higher rigidity and machining accuracy, split-type structural in the existing technology can be eliminated the part assembly error.
To above-mentioned each embodiment, clutch end can be specially the ring-type output rack of fixing with ring gear 29, and offers the lubricating oil duct 1 that is communicated with one-level planet row 3 and secondary planet row 4 on the output rack 9, and is as shown in Figure 1.Output rack 9 rotates under the drive of ring gear 2 and outputting power among this embodiment, also is provided with bearing pack 8 between output rack 9 and the secondary planet frame 432, so that output rack 9 rotates.Can know; Bearing pack 8, gear etc. all need lubricate, this lubricating oil duct 1 is set after, can be in lubricating oil duct 1 an amount of fluid of disposable injection; Stir through output rack 9, gear, the isostructural rotation of planet carrier; Fluid can be full of in the speed reducer, needs lubricated part can be immersed in the fluid, reaches the effect of immersion oil selflubricating.It is thus clear that, after on the output rack 9 lubricating oil duct 1 being set, need not to reserve special space special lubricating structure is set, make that the speed reducer structure is able to simplify, dwindle taking up room.
Form the big footpath section and the path section of periphery step surface for guaranteeing the sealability of speed reducer, secondary planet frame 432 is had to join, as shown in Figure 1, secondary planet axle 433 joins with the path section, and is an integral body; Ring gear 2 overcoat secondary planet axles 433 are provided with secondary planet wheel 41 between the two.The path section of output rack 9 overcoat secondary planet framves 432, an and end of output rack 9 and ring gear 2 is fixing, the step surface sealing of the end face of the other end and big footpath section.So design makes the speed reducer compact overall structure.
The sealing means of output rack 9 and secondary planet frame 432 specifically can be as shown in Figure 3.The end face of output rack 9 and secondary planet frame 432 big footpath section end faces are respectively equipped with second floating sealing base 91 and first floating sealing base 431, and among Fig. 3, second floating sealing base 91 and first floating sealing base 431 are equipped with groove; And the notch of groove is relative, and two grooves combine to form the annular seal chamber, is provided with two O shapes circle 61 in the Seal cage; Two floating sealing rings 62; Pair of O shape circle 61 is located in the groove of output rack 9 end faces with floating sealing ring 62 accordingly, and another is located in the groove of secondary planet frame 432 end faces with floating sealing ring 62 correspondences O shape circle 61, certainly; Being not limited to be provided with O shape circle 61 here, also can be the seal ring of common other types.Floating sealing ring 62 can be a metalwork.The axial end of two floating sealing rings 62 fit (speed reducer axially on butt joint and fit) and seal; Faying surface is sealing surface; On the perisporium of speed reducer periphery, all offer circular groove on two floating sealing rings 62; Two circular grooves are obliquely installed with respect to the applying sealing surface of two floating sealing rings 62, and the notch of two circular grooves is opposing; Two O shapes circle 61 places respectively in the circular groove of two floating sealing rings 62, and the cross section of circular groove possesses certain radian among Fig. 3, so that put floating sealing ring 62.O shape circle 61 is squeezed between the cell wall of groove of corresponding floating sealing ring 62 circular grooves and first floating sealing base 431, and another O shape circle 61 is squeezed between the cell wall of groove of corresponding floating sealing ring 62 circular grooves and second floating sealing base 91.Because two circular grooves are obliquely installed and notch is opposing; O shape is enclosed 61 compressive deformations and active force that the elastic energy that contains can produce to the extruding of applying sealing surface floating sealing ring 62; Make two floating sealing rings 62 be in fit-state all the time, guarantee that output rack 9 and secondary planet frame 432 form the favorable mechanical end face seal.
Output rack 9 also can adopt traditional outside framework oil seal structure to seal with secondary planet frame 432; But the structure of outside framework oil seal is had relatively high expectations to coaxality; And when taking above-mentioned sealing means, the elastic energy automatic centering compensating shaft of O shape circle 61 eccentric or misalign, thus not influenced by machining accuracy; Need not the people among the work for safeguarding, can keep long-acting sealing effect.
Please continue with reference to figure 6, Fig. 6 is the assembly structure schematic representation of secondary planet axle and secondary planet wheel among Fig. 3.Among this embodiment, be provided with bearing 42, the inner ring overcoat of bearing 42 also is fixed in the periphery wall of secondary planet axle 433, and the outer ring of bearing 42 is a secondary planet wheel 41.Be equivalent between secondary planet wheel 41 and secondary planet axle 433, be provided with the bearing 42 of no outer ring, promptly secondary planet take turns 41 served as bearing 42 the outer ring, be integrated with bearing 42; As the part of bearing 42, to compare with traditional solid box, the bearing 42 that this structure is set can reduce shared space, bearing 42 outer rings; Make structure more compact, reduce volume, and; Because secondary planet wheel 41 need not to reserve the space that supplies the outer ring to put, thereby improved the intensity of planet wheel.
More than a kind of speed reducer provided by the present invention has been carried out detailed introduction.Used concrete example among this paper principle of the present invention and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (12)
1. a speed reducer comprises one-level planet row and secondary planet row, and one-level planet wheel, primary planet carrier, one-level planet axis, one-level sun gear are drawn together in the package of said one-level planet; Secondary planet wheel, secondary planet frame, secondary planet axle, secondary sun gear are drawn together in said secondary planet package; Speed reducer also comprises clutch end and power intake; Said one-level sun gear is connected with said power intake; It is characterized in that speed reducer also comprises the ring gear that is connected with clutch end, said ring gear is provided with one-level internal tooth and secondary internal tooth; Said one-level internal tooth and the engagement of said one-level planet wheel, said secondary internal tooth and the engagement of said secondary planet wheel.
2. speed reducer as claimed in claim 1 is characterized in that, said power intake connects spline housing, the said one-level sun gear of said spline housing overcoat, and said spline housing is provided with internal spline, and said one-level sun gear has the external splines that cooperates with this internal spline.
3. speed reducer as claimed in claim 2 is characterized in that said speed reducer also is provided with the friction plate group, and said friction plate group comprises rotating plate and the driven plate that matches, and said rotating plate is connected with said spline housing; Said driven plate and speed reducer body relative fixed;
Said speed reducer also is provided with piston, spring, and the braking oil pocket that is communicated with the speed reducer working oil path; The body of the relative speed reducer of one end of said spring is fixed, and an end pushes against piston in said friction plate group; Said piston has the compression face towards said friction plate group, and said braking oil pocket is positioned at said compression face place.
4. speed reducer as claimed in claim 3 is characterized in that, said power intake penetrates to drive said one-level sun gear from the center hole of said secondary planet frame; Said spline housing is located in the said secondary planet frame center hole, and said friction plate group is arranged between the inwall of said spline housing and said secondary planet frame.
5. speed reducer as claimed in claim 4; It is characterized in that; Also comprise the ring-type pressing plate, said ring-type pressing plate places in the center hole of said secondary planet frame, and the inwall of the periphery wall of said ring-type pressing plate and said secondary planet frame is fixed; And an end of said spring contacts at said ring-type pressing plate, the other end said piston of conflicting.
6. speed reducer as claimed in claim 5 is characterized in that, also comprises the ring-type back-up ring, and the inwall of said secondary planet frame is provided with annular recess, and said ring-type back-up ring is embedded in the said annular recess; Said ring-type back-up ring and said spring are positioned at the both sides of said ring-type pressing plate, and said ring-type back-up ring is adjacent to said ring-type pressing plate.
7. speed reducer as claimed in claim 4; It is characterized in that; The inwall of said secondary planet frame forms towards the step surface of inner chamber protrusion, and said piston has the step surface relative with this step surface, the inner circle wall sealing of the periphery wall of said piston and said secondary planet frame; The step surface of said piston is said compression face, forms said braking oil pocket between the step surface of the step surface of said piston and said secondary planet frame inwall.
8. like each described speed reducer of claim 1-7, it is characterized in that said secondary planet frame and secondary planet axle are monolithic construction.
9. like each described speed reducer of claim 1-7; It is characterized in that; Said clutch end is and the fixing ring-type output rack of said ring gear to offer the lubricating oil duct that is communicated with said one-level planet row and said secondary planet row on the said output rack.
10. speed reducer as claimed in claim 9 is characterized in that, said secondary planet frame has the big footpath section and the path section of the formation periphery step surface that joins, and said secondary planet axle and said path section are joined; The said secondary planet axle of said ring gear overcoat, the said path section of said output rack overcoat, and an end of said output rack and said ring gear are fixed the step surface sealing of the end face of the other end and said big footpath section.
11. speed reducer as claimed in claim 10 is characterized in that, the end face of said output rack and the big footpath of said secondary planet frame section end face are equipped with groove, and two groove notches form the annular seal chamber relatively, are equipped with seal ring, floating sealing ring in the two said grooves; The axial end of two said floating sealing rings is fitted and is sealed, and two said floating sealing rings all offer circular groove on the perisporium of speed reducer periphery, and two said circular grooves are obliquely installed with respect to the applying sealing surface of two said floating sealing rings, and the notch of two said circular grooves is opposing; Said seal ring is squeezed between the cell wall of circular groove and corresponding said groove of said floating sealing ring.
12., it is characterized in that like each described speed reducer of claim 1-7, also be provided with bearing, the inner ring overcoat of said bearing also is fixed in the periphery wall of said secondary planet axle, and the outer ring of said bearing is said secondary planet wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210258630.XA CN102748432B (en) | 2012-07-24 | 2012-07-24 | A kind of speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210258630.XA CN102748432B (en) | 2012-07-24 | 2012-07-24 | A kind of speed reducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102748432A true CN102748432A (en) | 2012-10-24 |
| CN102748432B CN102748432B (en) | 2016-01-27 |
Family
ID=47028842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210258630.XA Active CN102748432B (en) | 2012-07-24 | 2012-07-24 | A kind of speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102748432B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122976A (en) * | 2013-03-21 | 2013-05-29 | 上海理工大学 | Novel planetary gear reducer |
| CN103307229A (en) * | 2013-06-28 | 2013-09-18 | 江苏赫夫特齿轮制造有限公司 | Annular gear structure |
| CN105422812A (en) * | 2015-12-04 | 2016-03-23 | 北京华航无线电测量研究所 | Detector drive mechanism in petroleum well |
| CN106678285A (en) * | 2017-02-23 | 2017-05-17 | 徐州徐工传动科技有限公司 | Normally closed walking speed reducer |
| CN107339372A (en) * | 2017-07-12 | 2017-11-10 | 安徽凯密克企业管理咨询有限公司 | A kind of automobile satellite gear |
| CN110925393A (en) * | 2019-12-25 | 2020-03-27 | 柳工柳州传动件有限公司 | Speed reduction device and loading and unloading machine |
| CN111674259A (en) * | 2019-03-11 | 2020-09-18 | 舍弗勒技术股份两合公司 | Electric axle for a motor vehicle |
| CN114380225A (en) * | 2021-12-29 | 2022-04-22 | 江苏汇智高端工程机械创新中心有限公司 | Compact hoist speed reducer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2489145Y (en) * | 2001-06-12 | 2002-05-01 | 舟山市行星减速机制造有限公司 | Hydraulic motor driven speed reducer |
| DE10125148A1 (en) * | 2001-04-23 | 2002-10-24 | Wittenstein Ag | Planetary gear has drive and driven shaft connected by element, housing part, annular chamber containing two sealing elements |
| US20050221945A1 (en) * | 2002-03-31 | 2005-10-06 | Klaus Plath | Transmission device comprising an eccentric power transmission axle that is disposed on the bearing axle |
| CN201535345U (en) * | 2009-12-02 | 2010-07-28 | 济南液压泵有限责任公司 | Planetary gear speed reducer |
| CN101956790A (en) * | 2010-05-28 | 2011-01-26 | 徐州圣邦机械有限公司 | Roller-speed reducer assembly for automobile hoist |
| CN202790340U (en) * | 2012-07-24 | 2013-03-13 | 徐工集团工程机械股份有限公司科技分公司 | Speed reducer |
-
2012
- 2012-07-24 CN CN201210258630.XA patent/CN102748432B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10125148A1 (en) * | 2001-04-23 | 2002-10-24 | Wittenstein Ag | Planetary gear has drive and driven shaft connected by element, housing part, annular chamber containing two sealing elements |
| CN2489145Y (en) * | 2001-06-12 | 2002-05-01 | 舟山市行星减速机制造有限公司 | Hydraulic motor driven speed reducer |
| US20050221945A1 (en) * | 2002-03-31 | 2005-10-06 | Klaus Plath | Transmission device comprising an eccentric power transmission axle that is disposed on the bearing axle |
| CN201535345U (en) * | 2009-12-02 | 2010-07-28 | 济南液压泵有限责任公司 | Planetary gear speed reducer |
| CN101956790A (en) * | 2010-05-28 | 2011-01-26 | 徐州圣邦机械有限公司 | Roller-speed reducer assembly for automobile hoist |
| CN202790340U (en) * | 2012-07-24 | 2013-03-13 | 徐工集团工程机械股份有限公司科技分公司 | Speed reducer |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122976A (en) * | 2013-03-21 | 2013-05-29 | 上海理工大学 | Novel planetary gear reducer |
| CN103307229A (en) * | 2013-06-28 | 2013-09-18 | 江苏赫夫特齿轮制造有限公司 | Annular gear structure |
| CN105422812A (en) * | 2015-12-04 | 2016-03-23 | 北京华航无线电测量研究所 | Detector drive mechanism in petroleum well |
| CN105422812B (en) * | 2015-12-04 | 2018-05-15 | 北京华航无线电测量研究所 | A kind of oil borehole geophone driving mechanism |
| CN106678285A (en) * | 2017-02-23 | 2017-05-17 | 徐州徐工传动科技有限公司 | Normally closed walking speed reducer |
| CN107339372A (en) * | 2017-07-12 | 2017-11-10 | 安徽凯密克企业管理咨询有限公司 | A kind of automobile satellite gear |
| CN111674259A (en) * | 2019-03-11 | 2020-09-18 | 舍弗勒技术股份两合公司 | Electric axle for a motor vehicle |
| CN111674259B (en) * | 2019-03-11 | 2024-04-12 | 舍弗勒技术股份两合公司 | Electric axle for a motor vehicle |
| CN110925393A (en) * | 2019-12-25 | 2020-03-27 | 柳工柳州传动件有限公司 | Speed reduction device and loading and unloading machine |
| CN110925393B (en) * | 2019-12-25 | 2023-01-31 | 柳工柳州传动件有限公司 | Speed reduction device and loading and unloading machine |
| CN114380225A (en) * | 2021-12-29 | 2022-04-22 | 江苏汇智高端工程机械创新中心有限公司 | Compact hoist speed reducer |
| CN114380225B (en) * | 2021-12-29 | 2023-09-26 | 江苏汇智高端工程机械创新中心有限公司 | Compact winch speed reducer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102748432B (en) | 2016-01-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102748432A (en) | Speed reducer | |
| EP2910395A2 (en) | Planetary gearbox with integral service brake | |
| CN102384248B (en) | Gear assembly for automatic transmission case | |
| CN103532283B (en) | Integrated Driven Generator housing | |
| US7832996B2 (en) | Hydrostatic rotary cylinder engine | |
| DE112011100243T5 (en) | Hybrid drive device | |
| US20060081423A1 (en) | Disk spring hydraulic clutch/brake | |
| CN203962788U (en) | The brake assembly with guide's Parking Brake housing | |
| CN109441708B (en) | Inner curve radial plunger motor based on planetary transmission | |
| CN103267193B (en) | High-speed rotating type oil way distributor | |
| JP6665988B2 (en) | Planetary gear drive using bushing | |
| CN104797817A (en) | Hydraulic apparatus having an improved structure for the cylinder implementation thereof | |
| JP2019512645A (en) | Planetary gear drive lugged single-walled output carrier | |
| CN105383455A (en) | Wet brake drive axle | |
| CN107856526A (en) | Power drive unit | |
| US20120156080A1 (en) | Hydraulic Toothed Wheel Machine | |
| CN103797262A (en) | Clutch | |
| CN202326003U (en) | Multiple-function inner curve type radial plunger hydraulic motor | |
| CN110529578A (en) | A kind of differential assembly | |
| CN104246083A (en) | Construction machine drive device | |
| CN202790340U (en) | Speed reducer | |
| CN201784463U (en) | Rear output structure of main reducer of tandem drive axle | |
| EP3460229B1 (en) | Internally curved low-speed high-torque hydraulic motor with torque being output by means of rotation of housing | |
| CN103899682A (en) | Transmission brake hub | |
| CN103375539B (en) | Ropeway is from baking cycloid speed reduction unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: XUZHOU XUGONG TRANSMISSION TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: TECHNOLOGY BRANCH OF XCMG ENGINEERING MACHINERY CO., LTD. Effective date: 20150119 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150119 Address after: 221004 No. 8, Mount Blue Road, Xuzhou economic and Technological Development Zone, Jiangsu, Xuzhou Applicant after: Xuzhou Xu work transmission Science and Technology Ltd. Address before: 221004 No. 8 technology center, Mount Blue Road, Xuzhou Economic Development Zone, Jiangsu, China Applicant before: Technology Branch of XCMG Engineering Machinery Co., Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |