CN101144525A - Compact hydraulic motor gear reducer - Google Patents
Compact hydraulic motor gear reducer Download PDFInfo
- Publication number
- CN101144525A CN101144525A CNA2007101340246A CN200710134024A CN101144525A CN 101144525 A CN101144525 A CN 101144525A CN A2007101340246 A CNA2007101340246 A CN A2007101340246A CN 200710134024 A CN200710134024 A CN 200710134024A CN 101144525 A CN101144525 A CN 101144525A
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- hydraulic motor
- fixed support
- piston
- gear reducer
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Abstract
The invention relates to a compact type hydraulic motor driving gear reducing device, which belongs to the hydraulic transmission technology field. The reducing device comprises a hydraulic motor and a planetary gear reducing device, a braking and clutching device is installed between the fixing supporting frame of the planetary gear reducing device and a central gear axle connecting part, a circular fixing supporting frame is installed between the hydraulic motor and the planetary gear reducing device, to form a circular piston cavity, and a braking controlling piston with the matching shape is installed in, one side of the radial extending part of the piston cavity is communicated with a pressure oil opening, the piston has a first and a second axial positions, and when the piston is positioned at the first axial position, the braking and clutching device is in the state enabling the fixing supporting frame and the central gear axle connecting part to be contacted; when the piston is positioned at the second axial position, the braking and clutching device is in the state enabling the fixing supporting frame and the central gear axle connecting part to be broken away from the contacting state; because the braking and clutching device is positioned between the hydraulic motor and the planetary gear computing reducing device, the structure is reasonable and compact, and the invention can entirely adapt the development requirements of the miniature and household machinery.
Description
Technical field
The present invention relates to a kind of variable speed drive, particularly a kind of gear reducer of fluid motor-driven belongs to hydraulic transmission technology field.
Background technique
Built-in crawler travel transmission device and so on has the fro hydraulic driving machinery transmission system that a cover contains hydraulic motor gear reducer with the driving mechanism that hydraulic pressure can be converted to mechanical energy, this system forms the pumping plant of hydraulic pressure energy, by the pipeline delivery pressure, its hydraulic pressure can be converted to mechanical energy through oil hydraulic motor, export the power of low-speed big then by planetary reducer, and by the chain wheel drive machine-walking that links to each other with revolving shell.In big machineries such as crawler excavator, pile driver, rig, generally adopted above-mentioned hydraulic pressure---the mechanical switch transmission, wherein common oil hydraulic motor is a radial plunger piston motor, planetary reducer is a secondary, and typical structure is on the books in the Chinese patent literature of patent No. ZL03142082.6.
Cycloid hydraulic motor is to use general hydraulic pressure energy---mechanical energy conversion device at present, but does not find to adopt the built-in gear reducer of cycloid hydraulic motor so far as yet.
One of developing direction of this class application machine is miniaturization at present.More than existing hydraulic motor gear reducer needs the moving control mechanism of preparation in addition, and structure is not compact, owing to adopt piston motor, radial dimension is bigger in addition, therefore is difficult to adapt to the growth requirement of miniaturization.
Summary of the invention
The objective of the invention is to: at the problem of above-mentioned prior art existence, a kind of hydraulic motor gear reducer of compact structure is provided, thereby volume is small and exquisite, can satisfy the development need of the miniaturization of built-in crawler travel and so on transmission device, running on wheels machinery family expensesization.
In order to achieve the above object, compact hydraulic motor gear reducer of the present invention comprises oil hydraulic motor and planet wheel decelerator, have filler opening and oil outlet on the shell of described oil hydraulic motor, described filler opening and oil outlet are communicated with by the runner in the shell, described runner flow through hydraulic pressure can and mechanical energy switching mechanism, described switching mechanism contains the output shaft that is supported on the body shell, described output shaft and the planet wheel decelerator central gear shaft coupling that is supported in the fixed support, described central gear is by the internal gear engagement of the planet wheel rotatable housing outer with being supported on fixed support, its improvements are: between the fixed support of described planet wheel decelerator and the central gear connecting shaft spare brake clutch device is housed, form radial expansion and axially extended annular piston chamber between the external cylindrical surface of described support bracket fastened endoporus and oil hydraulic motor end cap, the braking control piston that shape matches is housed in the described piston cavity, radial expansion position one side of described piston cavity is communicated with the pressure hydraulic fluid port, described piston has first and second axial positions that are controlled by pressure oil with respect to piston cavity, when being in first axial position, described brake clutch device is in and makes fixed support and central gear connecting shaft spare contact condition; When being in second axial position, described brake clutch device is in and makes fixed support and central gear connecting shaft spare separating contacting state.
Understand easily, when being in first axial position under the control of braking control piston at pressure oil, brake clutch device is in the state that contacts fixed support and central gear connecting shaft spare simultaneously, therefore can play the skidding effect; And when it was in second axial position, brake clutch device was in the state that disengaging contacts fixed support and central gear connecting shaft spare simultaneously, therefore not influence was transmitted in the conversion of motion.Because the confined space of brake clutch device between oil hydraulic motor and planet wheel calculating retarder, so the very reasonable compactness of structure, volume is small and exquisite, can adapt to the development need of miniaturization, family expenses machinery fully.
The present invention further improves, described oil hydraulic motor adopts cycloid hydraulic motor, described hydraulic pressure energy and mechanical energy switching mechanism are the cycloidal-pin wheel pair, the rotor of described cycloidal-pin wheel pair is by the external gear engagement of internal spline and couple axle one end, and the external gear of the described couple axle the other end and the internal spline of described output shaft mesh.Because the member axial distribution of cycloid hydraulic motor, though so axial dimension increase is arranged, radial dimension obviously reduces, and is easy to the built-in crawler travel transmission device of miniaturization etc. supportingly, is convenient to the development need of running on wheels machinery family expensesization.
The present invention further improves, a seal arrangement has been installed between described oil hydraulic motor fixing frame and the planetary reducer housing, the sealing device is a floating structure, constitute by metallic packing ring, O type circle, the compressive strain of O type circle produces support force, and support force acts on the steel structure ring, makes the steel structure ring be close to bearing outer ring, and have a small wedge shape on this one side of its contact, make the lubricant oil (fat) of gearbox inside not leak.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described in further detail.
Fig. 1 is the structural representation of the preferred embodiment of the present invention one.1-1 is a cycloid hydraulic motor among the figure, and 2-2 is a retarder, and 4-4 is the clutch spring.
Fig. 2 is brake clutch device and the retarder structure for amplifying schematic representation partly among Fig. 1 embodiment.Braking hydraulic fluid port 1 among Fig. 2, O type circle 2,3,14,24,25,27, fixed support 4, housing 5, piston 6, planet carrier 7, planet wheel 8, rolling element 9, planet axis 10, shaft block ring 11,17,20, bonnet 12, hole back-up ring 13,22, support 15, central gear 16, block 18, transmission shaft 19, bearing spacer 21, bearing 23, metallic packing ring 26.
Fig. 3 is the structure for amplifying schematic representation of the cycloid hydraulic motor among Fig. 1 embodiment.Dust ring 1 ' among Fig. 3, high pressure shaft seal 2 ', body shell 3 ', bearing 4 ', bearing spacer 5 ', piston ring 6 ', couple axle 7 ', pad 8 ', plug screw 9 ', stator 10 ', pin tooth 11 ', rotor 12 ', steel ball 13 ', O type circle 14 ', 16 ', 18 ', 31 ', hydraulic fluid port lid 15 ', bonnet 17 ', flow dunnage 19 ', fore-set 20 ', elastic support 21 ', pin 22 ', 25 ', connecting bolt 23 ', thrust plate 24 ', flow platen 26 ', flow couple axle 27 ', connecting plate 28 ', butterfly circle 29 ', Thrust nut 30 '.
Fig. 4 is near the partial enlarged drawing the piston 6 among Fig. 2.Moving plate 28 among Fig. 4, still 29, and fixed support sheet 30, other label is identical with Fig. 2.
Fig. 5 is the partial enlarged drawing of sealing configuration among Fig. 2.Among Fig. 5 28 " be the small angle circular cone, other label is identical with Fig. 2.
Embodiment
Embodiment one
The compact hydraulic motor gear reducer of present embodiment mainly is made of drive motor 1-1 and retarder 2-2 as shown in Figure 1.Wherein retarder is the primary planet pinion retarder, and drive motor adopts the cycloid hydraulic motor of low-speed big.
As seen from Figure 3, oil hydraulic motor mainly by body shell 3 ', stator 10 ' and bonnet 17 ' the fixedly connected formation shell, is shaped on filler opening and oil outlet on the bonnet 17 '.Filler opening and oil outlet are communicated with by the runner of the flow-distribution mechanism of enclosure, and it mainly is the cycloidal-pin wheel energy converter of stator 10 ', pin tooth 11 ', rotor 12 ' formation that this inner flow passage is flowed through, and hydraulic pressure can be able to be converted to the mechanical energy of rotor rotation.The rotor 12 ' of this cycloidal-pin wheel pair is by the external gear engagement of internal spline and couple axle 7 ' one end, and the external gear of this couple axle the other end and the internal spline of output shaft mesh.Output shaft is supported on the body shell 3 ', and the termination is shaped on external tooth.Central gear 16 ends on the other side that are supported on the planet wheel decelerator 2-2 in the fixed support 4 also are shaped on external tooth, and both insert shaft coupling the center hole that transmission shaft 19 is shaped on internal tooth from two ends respectively.Central gear 16 is by the planet wheel 8 and the internal gear engagement (referring to Fig. 2) that is supported on the rotatable housing 5 outside the fixed support 4 of three circumference uniform distributions, planet wheel 8 is fixed on the planet carrier 7 by planet axis 10, support by rolling element 9 between planet wheel 8 and the planet axis 10, rolling element 9 presents radial arrangement, planet carrier 7 is meshed with internal tooth on the fixed support 4 by external tooth, form the radial location structure, housing 5 is supported on the fixed support 4 by bearing 23, and each part axial is equivalent to the functor location of back-up ring effect by back-up ring work.
The fixed support 4 of this planet wheel decelerator 2-2 and central gear 16 connecting shaft spares---between the transmission shaft 19 brake clutch device is housed, its concrete structure as shown in Figure 4, mainly constitute by one group of moving plate 28 of mutual overlapping and still 29 and fixed support sheet 30, wherein fixed support sheet 30 and fixed support 4 relative fixed, each still 29 circumferentially retrains with the internal tooth of fixed support 4.Clutch spring 4-4 (see figure 1) is housed, axial float between piston 6 and the body shell 3 '; Each moving plate 28 circumferentially retrains with the external tooth of transmission shaft 19, and the structural principle of essence and friction clutcch of the prior art is similar.
Between the external cylindrical surface of support bracket fastened two inner bore of step at the front end external cylindrical surface place of the endoporus of fixed support 4 and oil hydraulic motor body shell 3 ' and oil hydraulic motor end cap, form radial expansion and axially extended annular piston chamber, the braking control piston is housed in the piston cavity.A radially side of piston cavity be derived from fixed support 4 on provide the braking hydraulic fluid port 1 of pressure oil to be communicated with.When pressure oil pressure is lower than a certain rating value (as 1.9MPa), piston 6 is under the effect of clutch spring 4-4, be shifted to the right to first axial position with respect to piston cavity, each adjacent moving plate 28 is fitted with still 29 and fixed support sheet 30, be that brake clutch device is in and makes fixed support 4 and transmission shaft 19 state of contact, the therefore relative and fixed support 4 static brakings of central gear 16, the unpowered output of retarder 2-2; When by this hydraulic fluid port input high-pressure oil, piston 6 overcomes acting force of the spring and moves left to the second place with respect to piston cavity, each adjacent moving plate 28 breaks away from card with still 29 and fixed support sheet 30 and closes, be that brake clutch device disengages fixed support 4 and transmission shaft 19, therefore the rotation of oil hydraulic motor 1-1 output shaft can drive central gear 16 by transmission shaft 19, and then process planet wheel 8 is delivered to the internal tooth of housing 5, the drive housing rotation thereby realization is slowed down.
When the application operating mode does not need braking function, friction moving plate and still can be installed.
For length and the profile size that reduces device as far as possible, sealing between oil hydraulic motor 1-1 and the retarder 2-2 in the following way, the fixed support 4 of oil hydraulic motor 1-1 and retarder 2-2 is rigidly connected, retarder 2-2 installs the seam joint and is shaped on big chamfering, the O RunddichtringO is placed in the chamfering place, to prevent that oils from lubricating or pressured fluid oozes out.
Spielpassung between fixed support 4 and the housing 5, radially connect by internal and external stopper, internal and external stopper does not contact, guarantee that fixed support 4 and housing 5 relative movement are flexible, this jointing adopts compound fluctuate hermetical ring to seal, its structure is: an end adopts O type sealing configuration, and the other end adopts metallic packing ring.Compound fluctuate hermetical ring is made up of metallic packing ring 26 and the O RunddichtringO 25 that is embedded in its outer circumferential groove.The cross section of the close circle 25 of O type is bigger, has bigger amount of deformation, and makes the seal face of metallic packing ring 26 and bearing 23 cycle surfaces that are fixed in the housing 5 to fit fully.This bearing outer ring end face is the anchor ring through polishing treatment, the seal face of metallic packing ring 26 is by small angle circular cone 28 " form indent; can realize that like this seal face periphery is with than small size contact bearing 23 cycle surfaces; increase contact pressure; and help quick compensation after metallic packing ring 27 wearing and tearing, guarantee the validity of sealing.
The structure of the driving oil hydraulic motor of present embodiment is that 200620070542.7,200720033329.3 Chinese patent is basic identical with application, can change a social system on its basis.It is little to adopt present embodiment the housing external diameter can be done as far as possible, and guarantees that housing has suitable intensity, saves the space as far as possible, has realized that motor has less entire length and profile.
In a word, compared with prior art, characteristic of the present invention is: 1. drive motor adopts the low-speed big cycloid hydraulic motor, motor body shell is placed in reducer shell inside, and retarder has one-level deceleration framework, makes that walking transmission device overall volume is littler, assembly process process is good, the cost performance height; 2. realized that hydraulic braking is integrated in the retarder, reduced the complexity of device; 3. because integrally-built the dwindling of device can better fully be realized built-in walking transmission device, can reduce the width of complete machine, improve it and pass through performance.
In addition to the implementation, the present invention can also have other mode of executions, can be round structure or the like as the external form of oil hydraulic motor.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (9)
1. compact hydraulic motor gear reducer, comprise oil hydraulic motor and planet wheel decelerator, have filler opening and oil outlet on the shell of described oil hydraulic motor, described filler opening and oil outlet are communicated with by the runner in the shell, described runner flow through hydraulic pressure can and mechanical energy switching mechanism; Described switching mechanism contains the output shaft that is supported on the body shell, described output shaft and the planet wheel decelerator central gear shaft coupling that is supported in the link spring shape fixed support, described central gear is by the internal gear engagement of the planet wheel rotatable housing outer with being supported on fixed support; It is characterized in that: between the fixed support of described planet wheel decelerator and the central gear connecting shaft spare brake clutch device is housed; Form radial expansion and axially extended annular piston chamber between the external cylindrical surface of described support bracket fastened endoporus and oil hydraulic motor end cap, the braking control piston that shape matches is housed in the described piston cavity; Radial expansion position one side of described piston cavity is communicated with the pressure hydraulic fluid port, and described piston has first and second axial positions that are controlled by pressure oil with respect to piston cavity; When being in first axial position, described brake clutch device is in and makes fixed support and central gear connecting shaft spare contact condition; When being in second axial position, described brake clutch device is in and makes fixed support and central gear connecting shaft spare separating contacting state.
2. according to claim 1 compact hydraulic motor gear reducer, it is characterized in that: described oil hydraulic motor adopts cycloid hydraulic motor, described hydraulic pressure energy and mechanical energy switching mechanism are the cycloidal-pin wheel pair, the rotor of described cycloidal-pin wheel pair is by the external gear engagement of internal spline and couple axle one end, and the external gear of the described couple axle the other end and the internal spline of described output shaft mesh.
3. according to claim 2 compact hydraulic motor gear reducer, it is characterized in that: described output shaft termination is shaped on external tooth, a described central gear end on the other side also is shaped on external tooth, and both insert shaft coupling the center hole that transmission shaft is shaped on internal tooth from two ends respectively.
4. according to claim 3 compact hydraulic motor gear reducer, it is characterized in that: described brake clutch device mainly is made of one group of moving plate of mutual overlapping and still and fixed support sheet, described fixed support sheet and fixed support relative fixed, described each still and support bracket fastened endoporus circumferentially retrain axial float; Described each moving plate and transmission shaft circumferentially retrain.
5. according to claim 4 compact hydraulic motor gear reducer, it is characterized in that: the fixed support of described oil hydraulic motor and retarder is rigidly connected, described retarder is connected the installation seam that touches and is shaped on chamfering with oil hydraulic motor, seal ring is equipped with at described chamfering place.
6. according to claim 5 compact hydraulic motor gear reducer, it is characterized in that: Spielpassung between described fixed support and the housing, radially connect by internal and external stopper, adopt compound fluctuate hermetical ring to seal each other.
7. according to claim 6 compact hydraulic motor gear reducer, it is characterized in that: described compound fluctuate hermetical ring is made up of metallic packing ring and the O RunddichtringO that is embedded in its outer circumferential groove
8. according to claim 7 compact hydraulic motor gear reducer, it is characterized in that: the seal face of described metallic packing ring is fitted with the bearing outer ring end face that is fixed in the housing, and the seal face of described metallic packing ring forms indent.
9. institute's compact hydraulic motor gear reducer according to Claim 8, it is characterized in that: supported by rolling element between described planet wheel and the planet axis, described rolling element is radial arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101340246A CN101144525A (en) | 2007-10-18 | 2007-10-18 | Compact hydraulic motor gear reducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101340246A CN101144525A (en) | 2007-10-18 | 2007-10-18 | Compact hydraulic motor gear reducer |
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| Publication Number | Publication Date |
|---|---|
| CN101144525A true CN101144525A (en) | 2008-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101340246A Pending CN101144525A (en) | 2007-10-18 | 2007-10-18 | Compact hydraulic motor gear reducer |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839209A (en) * | 2010-05-11 | 2010-09-22 | 镇江大力液压马达有限责任公司 | In-built baking cycloid hydraulic motor |
| CN103032560A (en) * | 2012-12-10 | 2013-04-10 | 意宁液压股份有限公司 | Novel double-braking rim driving device |
| CN106402321A (en) * | 2015-07-27 | 2017-02-15 | 福特全球技术公司 | Torque converter installation assist |
| CN107654604A (en) * | 2017-12-11 | 2018-02-02 | 青岛力克川液压机械有限公司 | A kind of agricultural hydraulic travel driving unit |
| CN107989929A (en) * | 2017-12-12 | 2018-05-04 | 镇江大力液压马达股份有限公司 | A kind of hydraulic brake system |
| CN108547936A (en) * | 2018-06-15 | 2018-09-18 | 龙工（上海）精工液压有限公司 | Excavator running motor speed reducer |
| CN114789408A (en) * | 2022-06-27 | 2022-07-26 | 烟台东星集团有限公司 | Part clamping device for machining oil cylinder shaft |
-
2007
- 2007-10-18 CN CNA2007101340246A patent/CN101144525A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839209A (en) * | 2010-05-11 | 2010-09-22 | 镇江大力液压马达有限责任公司 | In-built baking cycloid hydraulic motor |
| CN103032560A (en) * | 2012-12-10 | 2013-04-10 | 意宁液压股份有限公司 | Novel double-braking rim driving device |
| CN103032560B (en) * | 2012-12-10 | 2015-06-10 | 意宁液压股份有限公司 | Novel double-braking rim driving device |
| CN106402321A (en) * | 2015-07-27 | 2017-02-15 | 福特全球技术公司 | Torque converter installation assist |
| CN106402321B (en) * | 2015-07-27 | 2021-07-23 | 福特全球技术公司 | Torque converter installation assist |
| CN107654604A (en) * | 2017-12-11 | 2018-02-02 | 青岛力克川液压机械有限公司 | A kind of agricultural hydraulic travel driving unit |
| CN107654604B (en) * | 2017-12-11 | 2023-08-11 | 青岛力克川液压机械有限公司 | Agricultural hydraulic walking driving device |
| CN107989929A (en) * | 2017-12-12 | 2018-05-04 | 镇江大力液压马达股份有限公司 | A kind of hydraulic brake system |
| CN108547936A (en) * | 2018-06-15 | 2018-09-18 | 龙工（上海）精工液压有限公司 | Excavator running motor speed reducer |
| CN114789408A (en) * | 2022-06-27 | 2022-07-26 | 烟台东星集团有限公司 | Part clamping device for machining oil cylinder shaft |
| CN114789408B (en) * | 2022-06-27 | 2022-09-20 | 烟台东星集团有限公司 | Part clamping device for machining oil cylinder shaft |
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