CN102840095A - Plane distributing cycloidal hydraulic motor for strengthening bearing capacity - Google Patents
Plane distributing cycloidal hydraulic motor for strengthening bearing capacity Download PDFInfo
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- CN102840095A CN102840095A CN2012103543246A CN201210354324A CN102840095A CN 102840095 A CN102840095 A CN 102840095A CN 2012103543246 A CN2012103543246 A CN 2012103543246A CN 201210354324 A CN201210354324 A CN 201210354324A CN 102840095 A CN102840095 A CN 102840095A
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- internal spline
- bearing capacity
- couple axle
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Abstract
The invention relates to a plane distributing cycloidal hydraulic motor for strengthening bearing capacity, belonging to the technical field of a hydraulic transmission. Both ends of an universal driving shaft of the plane distributing cycloidal hydraulic motor for strengthening the bearing capacity are provided with external splines; the external spline at one end of the universal driving shaft is meshed with an internal spline at the inner end of the output shaft, and the external spline at the other end of the universal driving shaft is meshed with the internal spline at the inner end of a rotor of a cycloidal-pin pair; the rotor of the cycloidal-pin pair is further meshed with an external gear at one end of the distribution universal driving shaft through the internal spline, the external spline at the other end of the distribution universal driving shaft is meshed with the internal spline of a flow distribution disk in a flow distribution mechanism; a stopping block is arranged between the universal driving shaft and the distribution universal driving shaft; so that the length of the universal driving shaft of a transmission torque with a large capacity of motor is reduced; the stress of the cycloidal-pin pair is uniformly distributed and moved, and the damage of the cycloidal-pin pair caused by stress is avoided.
Description
Technical field
The present invention relates to a kind of hydraulic pressure can be to the cycloid hydraulic motor of mechanical energy conversion, and especially a kind of reinforcement bearing capacity flat porting cycloid hydraulic pressure motor belongs to hydraulic transmission technology field.
Background technique
Cycloid hydraulic motor is a fluid pressure drive device commonly used, also is to realize that hydraulic pressure can convert the hydraulic pressure execution device commonly used of function to.Cycloid hydraulic motor has advantages such as volume is little, specific power density is big, efficient is high, speed range is wide, thereby has obtained extensive use.
The basic structure of this type of device is to be shaped on liquid entering hole and refluxing opening on body shell or the bonnet; One end is equipped with cycloidal pinion engaged pair and flow-distribution mechanism; Flow-distribution mechanism can be placed on before or after the cycloidal pinion engaged pair; Being axle valve flow in preceding (body shell one side) generally, is the plane flow in back (bonnet one side), and the other end is equipped with output shaft.The rotor of cycloidal pinion engaged pair is through the external gear engagement of internal spline and couple axle one end, and the other end of couple axle is connected with the output shaft transmission.During work, flow-distribution mechanism is communicated with the secondary expansion engagement chamber of liquid entering hole and cycloidal-pin wheel, and the secondary contraction chamber of cycloidal-pin wheel is communicated with refluxing opening.As a result, after pressured fluid gets into body shell or bonnet from liquid entering hole, get into the expansion engagement chamber that cycloidal pinion engaged pair forms, its volume is constantly enlarged, liquid then refluxes from refluxing opening in the contraction engagement chamber that the while cycloidal pinion engaged pair forms; In this process, the rotor of cycloidal pinion engaged pair is expanded the engagement chamber and orders about rotation with the pressure difference of shrinking the engagement chamber, and this rotation is delivered to output shaft output through couple axle, thereby realizes that hydraulic pressure can be to the conversion of mechanical energy.Meanwhile, also by the couple axle driven rotary, the continuous switching connected state that goes round and begins again makes transfer process be able to continue to flow-distribution mechanism (axle valve).Like this, the output torque that motor just can be continuous.
Understand according to the claimant, in the described isonomic product of existing technology CN200720033329.3, when this serial motor displacement is bigger than normal; Because it is longer to change the secondary length of stator, the couple axle of its transmitting torque is longer, like this; The length of couple axle is oversize, and its bearing capacity descends relatively, influences the ability of the moment of torsion output of motor; Because the output of the moment of torsion of rotor is in its back-end, influence the eccentric cycloid motion of rotor in addition.
Summary of the invention
The objective of the invention is to: to the problem of above-mentioned existing technology existence; Under the prerequisite that keeps original motor composition element structure parameter constant; Find out the weak link of motor load bearing ability; Propose a kind of reinforcement bearing capacity type cycloid hydraulic motor structure, propose a kind of compact structure, motion motor configuration more stably, and designs simplification, anufacturability are good.
Research shows; In the isonomic product; What the product needed output torque was maximum is the motor of maximum pump discharge specification, and the couple axle that the motor torsional moment of maximum pump discharge specification transmits is the longest, and the rotor output torque also only is the spline that relies on its rear end in addition; The spline of its rear end can have an extra power to the rotor cycloid in the motion of transmitting torque, and then the motion of stator is changeed in influence.
In order to achieve the above object; Technological scheme of the present invention is: the couple axle of strengthening the bearing capacity flat porting cycloid hydraulic pressure motor; Two ends are shaped on external splines; The internal spline engagement that the external splines of said couple axle one end and output shaft are inner, the internal spline engagement that the rotor of the external splines of the said couple axle the other end and cycloidal-pin wheel pair is inner, the secondary rotor of said cycloidal-pin wheel also meshes through the external splines of internal spline and flow couple axle one end; The internal spline of thrust plate engagement in the external splines of the said flow couple axle the other end and the flow-distribution mechanism, its improvements are: be provided with block between said couple axle and the flow couple axle.
Said block is positioned at the rotor internal spline, and said block two ends are connected on the internal spline of rotor, Spielpassung between said block cylindrical and the rotor internal spline.
Have a through hole in the middle of the said block, described through hole can be so that the circulation of internal drainage liquid.
The internal spline of said rotor meshes with couple axle and flow couple axle simultaneously; The internal spline of said rotor is a continuous spline; The internal spline of said rotor is a discontinuous spline; The internal spline of said rotor is made up of two sections internal splines, has the annular groove of one section no internal spline between two sections internal splines.
It is continuous or the processing method of discontinuous internal spline that the present invention further improves.
Compare with the gerotor motor of the big discharge capacity specification of homologous series of existing technology, motor can bear high pulling torque after the above-mentioned improvement structure of the present invention, and the moment of torsion transmission is stable, and it is more stable that motor changes the operation of stator cycloid, and processing, assembling are all very convenient.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described in further detail.
Fig. 1 is the structural representation of one embodiment of the invention one.
Key 1 among the figure, dust ring 2, axle envelope 3, body shell 4, bearing 5, bearing spacer 6, output shaft 7; Couple axle 8, pad 9, plug screw 10, stator 11, pin tooth 12, rotor 13, steel ball 14; O type circle 15,16,18,31, bonnet 17, flow platen 19, fore-set 20, elastic support 21, pin 22, connecting bolt 23; Thrust plate 24, flow dunnage 25, flow couple axle 26, block 27, butterfly circle 28, connecting plate 29, Thrust nut 30.
Embodiment one
The reinforcement bearing capacity flat porting cycloid hydraulic pressure motor of present embodiment; As shown in Figure 1; On the basis of present existing medium and small discharge capacity flat porting cycloid hydraulic pressure motor BMSY, BMS series (its structure is described the one Chinese patent application referring to number of patent application: CN200720033329.3); The size of its monnolithic case, Conncetion cimension is constant basically, and the motor of discharge capacity specification improves greatly.This cycloid hydraulic motor is interfixed by output shaft 7, body shell 4, stator 11 and bonnet 17 and forms the hydraulic oil reservoir body.Bonnet 17 is shaped on liquid entering hole and refluxing opening.Body shell 4 is monolithic constructions, and output shaft 7 is supported in the body shell 4 with tapered roller bearing 5 by two in opposite directions, and axle envelope 3 pairs of output shafts 7 seal with body shell 4.
The rotor 13, stator 11 and the pin tooth 12 that are positioned at body shell 4 right-hand members constitute the cycloidal-pin wheel pair, under the driving of high low pressure hydraulic oil, can convert hydraulic pressure to mechanical energy through the rotation of rotor 13, thereby form energy conversion device.Couple axle 8 is delivered to the output shaft 7 of body shell 4 left ends with the moment of torsion of rotor 13 through the spline engagement tooth, thereby output mechanical energy forms PTO.Flow platen 19, thrust plate 24, flow dunnage 25 and bonnet 17 are formed the flow-distribution mechanism that is positioned at body shell 4 right-hand members.
Strengthen the couple axle 8 of bearing capacity flat porting cycloid hydraulic pressure motor; Said couple axle two ends are shaped on external splines; The external splines of said couple axle 8 one ends and output shaft 7 inner internal splines mesh; The secondary rotor 13 inner internal splines of the external splines of said couple axle 7 the other ends and cycloidal-pin wheel mesh, and the secondary rotor 13 of said cycloidal-pin wheel also passes through the external gear engagement of internal spline and flow couple axle 26 1 ends, the internal spline of thrust plate 24 engagement in the external splines of said flow couple axle 26 the other ends and the flow-distribution mechanism; Be provided with block 27 between said couple axle 8 and the flow couple axle 26, reduced the length of couple axle 7 of the transmitting torque of big displacement motor.
Said block 27 is positioned at rotor 13 internal splines, and said block 27 two ends are connected on the internal spline of rotor 13, Spielpassung between said block 27 cylindricals and rotor 13 internal splines.
Have a through hole in the middle of the said block 27, described through hole can be so that the circulation of internal drainage liquid.
The internal spline of said rotor 13 is discontinuous splines, and the internal spline of said rotor 13 is made up of two sections internal splines, has the annular groove of one section no internal spline between two sections internal splines.Each of described internal spline section effective length is not more than the length before improving; Adopt identical equipment (broaching machine) and cutter (broaching tool) to process; To reduce the length and the cost of broaching tool; The cycloid profile employing profiling cutter of rotor 13 is rough milled, splined shaft hob half finish-milling mechanical processing technique, and the form grinding precision machining is adopted in fine finishing after the heat treatment of cycloid profile.
Said continuous or discontinuous rotor 13 adds man-hour, and process step is following:
The first step, to be processed into periphery be step-like for circular, endoporus or the annular groove that adds a ring with the bar blank of rotor 13;
Second step, the reference level of rotor 13 is placed on the fixing device of lathe the disposable spline of broaching out of broaching tool;
The 3rd the step, with internal spline as benchmark, profiling cutter is rough milled out the cycloid profile;
The 4th the step, with internal spline as benchmark, splined shaft hob half finish-milling goes out the cycloid profile;
After the 5th step, the heat treatment, the correct grinding reference level adopts the form grinding precision machining to go out the cycloid shape of rotor 13.
The outgoing position of said rotor 13 moments of torsion is the external splines and the secondary rotor 13 internal spline engagement places of cycloidal-pin wheel of couple axle 7; Be positioned at the middle part of rotor; Interval block 27; Away from the end of rotor 13, help rotor 13, stator 11 and pin tooth 12 and constitute cycloidal-pin wheel secondary stressed even distribution and motion thereof, avoid the damage that cycloidal-pin wheel is secondary that causes owing to stressed reason.
The internal spline of said rotor 13 meshes with couple axle 8 and flow couple axle 26 simultaneously; The internal spline of said rotor 13 is continuous splines; The cold-extrusion technology shaping operation is all adopted in the cycloid profile semi finishing of said spline and rotor 13, and the form grinding precision machining is adopted in fine finishing after the heat treatment of cycloid profile.
Facts have proved that the reinforcement bearing capacity flat porting cycloid hydraulic pressure motor of present embodiment is simple in structure, processing technology is reliable.Adopt the structure that is provided with block between couple axle and the flow couple axle to help the increase of motor output torque, improved the whole mechanical efficiency of motor, make that more the motion output of motor is more steady.
Except that the foregoing description, the present invention can also have other mode of executions, has at least two sections internal splines to form like the internal spline of said rotor, has annular groove of one section no internal spline or the like between each section internal spline.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. strengthen the bearing capacity flat porting cycloid hydraulic pressure motor for one kind; The couple axle two ends are shaped on external splines; The internal spline engagement that the external splines of said couple axle one end and output shaft are inner; The inner internal spline engagement of rotor that the external splines of the said couple axle the other end and cycloidal-pin wheel are secondary; The secondary rotor of said cycloidal-pin wheel also meshes through the external splines of internal spline and flow couple axle one end, and the engagement of the internal spline of thrust plate is characterized in that: be provided with block between said couple axle and the flow couple axle in the external splines of the said flow couple axle the other end and the flow-distribution mechanism.
2. reinforcement bearing capacity flat porting cycloid hydraulic pressure motor according to claim 1; It is characterized in that: said block is positioned at the rotor internal spline; Said block two ends are connected on the internal spline of rotor, Spielpassung between said block cylindrical and the rotor internal spline.
3. reinforcement bearing capacity flat porting cycloid hydraulic pressure motor according to claim 2 is characterized in that: have a through hole in the middle of the said block.
4. reinforcement bearing capacity flat porting cycloid hydraulic pressure motor according to claim 2 is characterized in that: the internal spline of said rotor simultaneously and couple axle mesh with the flow couple axle, the internal spline of said rotor is a continuous spline.
5. according to claim 3 or 4 described reinforcement bearing capacity flat porting cycloid hydraulic pressure motors; It is characterized in that: the internal spline of said rotor is a discontinuous spline; The internal spline of said rotor is made up of two sections internal splines, has the annular groove of one section no internal spline between said two sections internal splines.
6. reinforcement bearing capacity flat porting cycloid hydraulic pressure motor according to claim 5 is characterized in that: the outgoing position of said rotor torque is the external splines and the secondary rotor internal spline engagement place of cycloidal-pin wheel of couple axle, is positioned at the middle part of rotor.
7. the processing method of reinforcement bearing capacity flat porting cycloid hydraulic pressure motor rotor according to claim 4; It is characterized in that: the cold-extrusion technology shaping operation is all adopted in the cycloid profile semi finishing of said rotor internal spline and rotor, and the form grinding precision machining is adopted in fine finishing after the heat treatment of cycloid profile.
8. the processing method of reinforcement bearing capacity flat porting cycloid hydraulic pressure motor rotor according to claim 5; It is characterized in that: said rotor internal spline adopts broaching tool broaching processing technology; The cycloid profile employing shaping of affiliated rotor is rough milled, splined shaft hob half finish-milling mechanical processing technique, and the form grinding precision machining is adopted in fine finishing after the heat treatment of cycloid profile.
9. according to the processing method of claim 4 or 8 described reinforcement bearing capacity flat porting cycloid hydraulic pressure motor rotors, it is characterized in that comprising following basic step:
The first step, to be processed into periphery be step-like for circular, endoporus or the annular groove that adds a ring with the bar blank of rotor;
Second step, the reference level of rotor is placed on the fixing device of lathe the disposable spline of broaching out of broaching tool;
The 3rd the step, with internal spline as benchmark, profiling cutter is rough milled out the cycloid profile;
The 4th the step, with internal spline as benchmark, splined shaft hob half finish-milling goes out the cycloid profile;
After the 5th step, the heat treatment, the correct grinding reference level adopts the form grinding precision machining to go out the cycloid shape of rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210354324.6A CN102840095B (en) | 2012-09-21 | 2012-09-21 | Strengthen bearing capacity flat porting cycloid hydraulic pressure motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210354324.6A CN102840095B (en) | 2012-09-21 | 2012-09-21 | Strengthen bearing capacity flat porting cycloid hydraulic pressure motor |
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| CN102840095A true CN102840095A (en) | 2012-12-26 |
| CN102840095B CN102840095B (en) | 2016-02-17 |
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| CN201210354324.6A Active CN102840095B (en) | 2012-09-21 | 2012-09-21 | Strengthen bearing capacity flat porting cycloid hydraulic pressure motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615354A (en) * | 2013-11-16 | 2014-03-05 | 镇江大力液压马达股份有限公司 | Large-displacement integrated rotor and stator pair cycloid hydraulic motor |
| CN103726983A (en) * | 2014-01-09 | 2014-04-16 | 镇江大力液压马达股份有限公司 | High-speed flow distribution cycloid hydraulic motor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0544209A1 (en) * | 1991-11-25 | 1993-06-02 | Eaton Corporation | Spline reduction and extension for auxiliary drive component |
| JPH07217527A (en) * | 1994-01-10 | 1995-08-15 | Hollis N White | Manufacture of rotor for gyrotor |
| CN2929289Y (en) * | 2006-05-08 | 2007-08-01 | 宁波中意液压马达有限公司 | Cycloidal hydraulic motor for wheel |
| CN2931840Y (en) * | 2006-06-23 | 2007-08-08 | 郑州宇建预应力有限公司 | Water supply end-face flow distribution cycloidal gear motor |
| CN102126114A (en) * | 2011-04-01 | 2011-07-20 | 常州德丰机电有限公司 | Full hydraulic redirector rotor processing method |
| CN202789315U (en) * | 2012-09-21 | 2013-03-13 | 镇江大力液压马达有限责任公司 | Plane distributing cycloid hydraulic motor with bearing capacity strengthened |
-
2012
- 2012-09-21 CN CN201210354324.6A patent/CN102840095B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0544209A1 (en) * | 1991-11-25 | 1993-06-02 | Eaton Corporation | Spline reduction and extension for auxiliary drive component |
| JPH07217527A (en) * | 1994-01-10 | 1995-08-15 | Hollis N White | Manufacture of rotor for gyrotor |
| CN2929289Y (en) * | 2006-05-08 | 2007-08-01 | 宁波中意液压马达有限公司 | Cycloidal hydraulic motor for wheel |
| CN2931840Y (en) * | 2006-06-23 | 2007-08-08 | 郑州宇建预应力有限公司 | Water supply end-face flow distribution cycloidal gear motor |
| CN102126114A (en) * | 2011-04-01 | 2011-07-20 | 常州德丰机电有限公司 | Full hydraulic redirector rotor processing method |
| CN202789315U (en) * | 2012-09-21 | 2013-03-13 | 镇江大力液压马达有限责任公司 | Plane distributing cycloid hydraulic motor with bearing capacity strengthened |
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| Title |
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| 上海传动机械厂 上海机械工艺研究所 液压试制小组: "摆线油马达的原理、设计和加工", 《机床与液压》, no. 2, 31 May 1973 (1973-05-31) * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615354A (en) * | 2013-11-16 | 2014-03-05 | 镇江大力液压马达股份有限公司 | Large-displacement integrated rotor and stator pair cycloid hydraulic motor |
| CN103726983A (en) * | 2014-01-09 | 2014-04-16 | 镇江大力液压马达股份有限公司 | High-speed flow distribution cycloid hydraulic motor |
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| CN102840095B (en) | 2016-02-17 |
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Address after: 212127 Zhenjiang province Jiangsu city Dantu District Valley Township Street No. 280 Applicant after: ZHENJIANG DALI HYDRAULIC MOTOR CO., LTD. Address before: 212127 Zhenjiang province Jiangsu city Dantu District Valley Township Street No. 280 Applicant before: Zhenjiang Dali Hydraulic Component Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: ZHENJIANG DALI HYDRAULIC COMPONENT CO., LTD. TO: ZHENJIANG DALI HYDRAULICMOTOR CO., LTD. |
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