CN201057122Y - Strong-sealing high-speed stream cycloid hydraulic motor and high-pressure rotating shaft seal - Google Patents

Strong-sealing high-speed stream cycloid hydraulic motor and high-pressure rotating shaft seal Download PDF

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Publication number
CN201057122Y
CN201057122Y CNU2007200361147U CN200720036114U CN201057122Y CN 201057122 Y CN201057122 Y CN 201057122Y CN U2007200361147 U CNU2007200361147 U CN U2007200361147U CN 200720036114 U CN200720036114 U CN 200720036114U CN 201057122 Y CN201057122 Y CN 201057122Y
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CN
China
Prior art keywords
high pressure
face
ladder
housing
hydraulic motor
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.)
Expired - Fee Related
Application number
CNU2007200361147U
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Chinese (zh)
Inventor
张智敏
王志生
翁爱光
潘骏
王顺发
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHENJIANG DALI HYDRAULIC COMPONENT CO Ltd
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ZHENJIANG DALI HYDRAULIC COMPONENT CO Ltd
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Priority to CNU2007200361147U priority Critical patent/CN201057122Y/en
Application granted granted Critical
Publication of CN201057122Y publication Critical patent/CN201057122Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a strong seal high speed flow distribution hydraulic motor and high pressure rotation shaft seal and pertains to the technology field of hydraulic transmission. The hydraulic motor comprises a shell provided with a liquid inlet and a reflux port, a flow distribution mechanism and an output shaft. A second ladder step end is mounted in the output hole of the shell; the output shaft is provided with a step end corresponding to the ladder end for the shell, an end bearing is arranged between the second level end of the ladder end and the step end and the high pressure rotation shaft seal is arranged between the first end of the ladder end and a retaining ring for the end bearing. The annual body of the high pressure rotation shaft seal is made of flexible and wear resistant material with single side cross taking the shape of ladder with at least inner side shrinking towards the inner diameter; one side of the ladder cross facing the high pressure is provided with a groove and the groove linear is provided with a groove-shaped rigid support with an opening facing the high pressure side. The utility model can ensure reliable and effective seal and normal running of the motor and improve the stability of output and motion of the hydraulic motor and the volume efficiency of the whole motor.

Description

Strong sealing high-speed distributing cycloid hydraulic motor and high pressure rotary shaft envelope
Technical field
The utility model relates to a kind of hydraulic pressure can be to the cycloid hydraulic motor of mechanical energy conversion, and especially a kind of sealing configuration of high-speed distributing cycloid hydraulic motor improves, and belongs to hydraulic transmission technology field.
Background technique
Cycloid hydraulic motor is a hydraulic pressure execution device commonly used of realizing liquid-function conversion.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 housing or the bonnet, one end is equipped with cycloidal-pin wheel pair and flow-distribution mechanism, the other end is equipped with output shaft, the rotor of cycloidal-pin wheel pair is by 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 makes liquid entering hole be communicated with the expansion engagement chamber of cycloidal-pin wheel pair, and the contraction chamber of cycloidal-pin wheel pair is communicated with refluxing opening, the result, after pressured fluid enters housing or bonnet from liquid entering hole, enter the secondary expansion engagement chamber that forms of cycloidal-pin wheel, its volume is constantly enlarged, liquid then refluxes from refluxing opening in the secondary contraction engagement chamber that forms of cycloidal-pin wheel simultaneously; In this process, the rotor of cycloidal-pin wheel 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 by couple axle, thereby realizes that hydraulic pressure can be to the conversion of mechanical energy.Meanwhile, flow-distribution mechanism is also by flow transmission shaft driven rotary, and the continuous switching connected state that goes round and begins again is continued transfer process.
Understand according to the claimant, the runner design form of flow-distribution mechanism has multiple, mainly is divided into the two kinds of flow modes in a flow and plane.Wherein, the plane flow-distribution mechanism is comparatively common a kind of, its typical structure is that a side of cycloidal-pin wheel pair is fixed one group of flow supporting disk that forms changeable runner, these flow supporting disk both sides are installed respectively and are shaped on the thrust plate that switches the runner hole and the rotor of cycloidal-pin wheel pair, the external tooth engagement of the inner spline gear of rotor and flow transmission shaft one end, the other end of flow transmission shaft passes the endoporus of each flow supporting disk, is connected with the thrust plate transmission.For example, authorize the U.S. Pat 6544018 that day is on April 8th, 2003 and authorize the Chinese patent 91221320.5 that day is on May 13rd, 1992 all to disclose this typical structure.
During work, the motion of rotor drives the output shaft rotation by couple axle on the one hand, output torque, driving thrust plate by the flow transmission shaft on the other hand rotates, realize the switching of runner, the pressured fluid order is entered along circumference respectively mesh cavity volume, thereby keep rotor constantly to rotate, hydraulic pressure can be converted to the mechanical energy of output shaft.
In this process, the rotary seal between the output shaft height position is most important, and its sealing effect is not only directly determining the efficient of oil hydraulic motor, and influences transmission stability.
The model utility content
The purpose of this utility model is: by the further investigation to cycloid secondary motion mechanism, by improvement to existing output shaft rotary seal structure, a kind of strong sealing high-speed distributing cycloid hydraulic motor is proposed, a kind of high pressure rotary shaft envelope is proposed simultaneously, thereby make its motion output more steady, volumetric efficiency is higher.
The utility model is at above-mentioned model utility purpose, its technological scheme is: seal high-speed distributing cycloid hydraulic motor by force, comprise the housing that is shaped on liquid entering hole and refluxing opening, one end of described housing is equipped with the cycloidal-pin wheel that is made of stator and rotor flow-distribution mechanism secondary and that be made of flow dunnage complex liquid baric flow road and composite rotors, and the delivery outlet of its other end is supported with the output shaft that stretches out in the housing; The rotor of described cycloidal-pin wheel pair is by the external gear engagement of internal spline and couple axle one end, and the other end of described couple axle is connected with the output shaft transmission; Its improvements are: be shaped on secondary ladder end face in the delivery outlet of described housing, described output shaft is shaped on and the relative step end face of housing ladder end face, mounting end spherical bearing between second level end face in the described ladder end face and the step end face is installed the high pressure rotary shaft envelope between first order end face in the described ladder end face and the end face end ring.
The annular body of this high pressure rotary shaft envelope is made by the high-abrasive material of tool flexibility, monolateral cross section be inner edge at least to internal diameter shrink trapezoidal.Described trapezoid cross section have groove towards on high-tension side one side, be lined with opening in the described groove towards on high-tension side grooved rigid support.
This high pressure rotary shaft envelope not only can prevent from by the wedge type fitted seal of shrinking to internal diameter to leak, and under of the effect of on high-tension side groove at highly pressurised liquid, effect with external diameter in the bloated main body of support, thereby the motion junction plane that makes itself and rotating shaft remains and must seal impacting force, and this impacting force and fluid pressure are proportional, can effectively avoid the seepage of highly pressurised liquid.After it is installed in above-mentioned oil hydraulic motor, this high pressure rotary shaft seals the two ends of monolateral end face and the constraint that external diameter is subjected to housing and end face end ring respectively, during work, the support that groove is produced by the high pressure effect of expanding can keep internal diameter to fit tightly with rotating output shaft all the time, guarantee reliable and effective sealing, guarantee that high-speed distributing cycloid hydraulic motor runs well under the high pressure situation, thereby improve the stationarity of oil hydraulic motor output movement and the volumetric efficiency of whole motor.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is an embodiment's of the utility model a structural representation.Each part and label corresponding relation are among the figure: key 1, dust ring 2, housing 3, needle bearing 4,10, output shaft 5, high pressure rotary shaft envelope 6, end ring 7,9, plain thrust bearing 8,12, couple axle 11, seal ring 13,22, flow dunnage 14, stator 15, rotor 16, pin tooth 17, connecting bolt 18, steel ball valve body 19, pressure compensation plate 20, bonnet 21, duct 23.
Fig. 2 is the package assembly enlarged diagram of Fig. 1 embodiment mesohigh rotary shaft sealing 6.
Embodiment
Embodiment one
In conjunction with above-mentioned accompanying drawing embodiment, the utility model is carried out following detailed description again.The strong sealing high-speed distributing cycloid hydraulic motor of present embodiment comprises the housing 3 that is shaped on liquid entering hole and refluxing opening, one end of this housing is equipped with cycloidal-pin wheel pair and the flow-distribution mechanism that is made of stator 15, pin tooth 17 and rotor 16, this flow-distribution mechanism is made of jointly the duct 23 of valve body on the rotor 16 and flow dunnage 14, flow dunnage 14 is that support slice is compound constitutes by assembly stream, and the flow support slice can adopt accurate laser beam cutting.The housing the other end is by the output shaft 5 of needle bearing 4,10 and plain thrust bearing 8,12 together support, output shaft 5 stretches out in housing, outside output torque, plain thrust bearing 8 two ends are by end ring 7,9 together support, end ring 7,9 is the baffle ring that floats, the endoporus and the less Spielpassung of output shaft of unsteady baffle ring, the big Spielpassung of external diameter and housing, the endoporus of the baffle ring that promptly floats and the matching gap between the output shaft are less than the matching gap between its external diameter and the housing.Plain thrust bearing 12 is supporting output shaft 5, the rotor 16 of cycloidal-pin wheel pair is by the external gear engagement of internal spline and couple axle 11 1 ends, the other end external tooth of this couple axle is connected with internal tooth transmission in the output shaft 5 one end endoporus, form the moment of torsion output mechanism, thereby the moment of torsion that pressured fluid produces is delivered to the output terminal of output shaft.Between rotor 16 the other ends and bonnet 21 of cycloidal-pin wheel pair,, constituted the pressure balance mechanism that changes secondary two end faces of stator jointly, thereby made that the secondary motion of commentaries on classics stator is flexible by the one-way valve and the duct thereof of pressure compensation plate 20 inside.The flow dunnage of the compound composition of one assembly stream support plate, commentaries on classics stator pair, pressure compensation plate are fixed together by bolt and housing 3, have formed the motor overall structure.
Has the uniform liquid flow hole road of different distributions on the two ends of rotor plane of cycloidal-pin wheel pair, wherein the duct of a stomidium road and flow dunnage forms flow-distribution mechanism, the liquid flow hole road of rotor along with rotor by eccentric rotation and revolution, the height hydraulic oil liquid is carried out flow, impel the airtight engagement cavity volume of the commentaries on classics stator of cycloidal-pin wheel pair constantly to expand and shrink, form moment of torsion, drive that output shaft constantly rotatablely moves and the output of moment of torsion.Match with the duct of pressure balance plate in the other end duct, and form the cavity volume of hydraulic oil liquid between the bonnet, thereby change stator secondary with the pressure balance plate between and bonnet and pressure balance plate form certain pressure chamber, help the stable operation of moment of torsion formation mechanism.
The oil hydraulic motor of present embodiment is realized rotating output shaft respectively by high pressure rotary shaft envelope 6, seal ring 13,22 and is fixedly sealed between the end face.Seal ring the 13, the 22nd, rubber ring, its structure can adopt round structure both O-ring seals or rectangular seal.Because the structure of motor needs compact more, can adopt compact more rectangular seal, its low cost of manufacture, sealing is reliable.Because the motor output shaft in the present embodiment is direct as communicating with another hydraulic fluid port of housing with the internal spline cavity that couple axle matches, the journal packing of output shaft under a kind of therein motion state of motor (high pressure rotary shaft envelope 6) is directly bearing the hydraulic oil of high pressure, therefore very high to the requirement of high pressure rotary shaft envelope 6, must have the ability of bearing high pressure, the annular body of this high pressure rotary shaft envelope 6 adopts teflon class master material 24 to make (referring to Fig. 2), existing certain flexibility has desirable wear resistance again, because the inner edge in its cross section shrinks to internal diameter, the outside is expanded to external diameter, therefore be trapezoidal, help keeping sealing with inside and outside surface of contact.(trapezoidal going to the bottom) has groove towards on high-tension side one side in this trapezoid cross section, is lined with opening in the groove towards on high-tension side grooved rigid support 25, can satisfy the rigidity requirement of axle envelope like this, and guarantees that the axle sealing is fixed motionless.This rigid support 25 can be the spring sheet with strong elasticity, because spring sheet both can support whole axle envelope, can play reinforing function to lip again; If it can be rigid support also that structure allows, add elastomeric spring lip is strengthened.
In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims (5)

1. one kind strong seals high-speed distributing cycloid hydraulic motor, comprise the housing that is shaped on liquid entering hole and refluxing opening, one end of described housing is equipped with the cycloidal-pin wheel that is made of stator and rotor flow-distribution mechanism secondary and that be made of flow dunnage complex liquid baric flow road and composite rotors, and the delivery outlet of its other end is supported with the output shaft that stretches out in the housing; The rotor of described cycloidal-pin wheel pair is by the external gear engagement of internal spline and couple axle one end, and the other end of described couple axle is connected with the output shaft transmission; It is characterized in that: be shaped on secondary ladder end face in the delivery outlet of described housing, described output shaft is shaped on and the relative step end face of housing ladder end face, mounting end spherical bearing between second level end face in the described ladder end face and the step end face, the high pressure rotary shaft envelope is installed between first order end face in the described ladder end face and the end face end ring, the annular body of described high pressure rotary shaft envelope is made by the high-abrasive material of tool flexibility, monolateral cross section be inner edge at least to internal diameter shrink trapezoidal; Described trapezoid cross section have groove towards on high-tension side one side, be lined with opening in the described groove towards on high-tension side grooved rigid support.
2. according to the described strong sealing high-speed distributing cycloid hydraulic motor of claim 1, it is characterized in that: described high pressure rotary shaft envelope is equipped with unsteady baffle ring with housing shaft to the support level place that contacts; The endoporus of described unsteady baffle ring and the matching gap between the output shaft are less than the matching gap between its external diameter and the housing.
3. high pressure rotary shaft envelope comprises the annular body of being made by the tool flexible wear-resistant material, it is characterized in that: the monolateral cross section of described annular body be inner edge at least to internal diameter shrink trapezoidal; Described trapezoid cross section has groove towards on high-tension side one side, is lined with opening in the described groove towards on high-tension side grooved rigid support.
4. according to the described high pressure rotary shaft envelope of claim 3, it is characterized in that: described rigid support is made by the spring sheet with strong elasticity.
5. according to the described high pressure rotary shaft envelope of claim 3, it is characterized in that: the inner edge in the monolateral cross section of described annular body shrinks to internal diameter, and the outside is expanded to external diameter.
CNU2007200361147U 2007-04-11 2007-04-11 Strong-sealing high-speed stream cycloid hydraulic motor and high-pressure rotating shaft seal Expired - Fee Related CN201057122Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200361147U CN201057122Y (en) 2007-04-11 2007-04-11 Strong-sealing high-speed stream cycloid hydraulic motor and high-pressure rotating shaft seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007200361147U CN201057122Y (en) 2007-04-11 2007-04-11 Strong-sealing high-speed stream cycloid hydraulic motor and high-pressure rotating shaft seal

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102155448A (en) * 2011-03-23 2011-08-17 镇江液压件厂有限责任公司 Torque amplifying device
CN102168643A (en) * 2011-03-25 2011-08-31 胡世璇 Novel structure for cycloid hydraulic motor flow distributor
CN103629042A (en) * 2013-11-20 2014-03-12 镇江大力液压马达股份有限公司 Shaft valve flow distribution 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
CN103742353A (en) * 2013-12-21 2014-04-23 镇江大力液压马达股份有限公司 Plane valving cycloid hydraulic motor
CN104154237A (en) * 2014-07-18 2014-11-19 安徽荃富信息科技有限公司 Vacuum sealing mechanism of rotary shaft
CN106194573A (en) * 2016-08-31 2016-12-07 镇江大力液压马达股份有限公司 A kind of composite rotors assembly and manufacture method thereof
CN106762387A (en) * 2017-01-06 2017-05-31 镇江大力液压马达股份有限公司 A kind of body shell positioning high-speed distributing cycloid hydraulic motor with protecgulum
CN106762385A (en) * 2016-12-20 2017-05-31 镇江大力液压马达股份有限公司 A kind of high-speed distributing cycloid hydraulic motor and flow support board fabrication method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102155448A (en) * 2011-03-23 2011-08-17 镇江液压件厂有限责任公司 Torque amplifying device
CN102168643A (en) * 2011-03-25 2011-08-31 胡世璇 Novel structure for cycloid hydraulic motor flow distributor
CN103629042A (en) * 2013-11-20 2014-03-12 镇江大力液压马达股份有限公司 Shaft valve flow distribution cycloid hydraulic motor
CN103629042B (en) * 2013-11-20 2016-03-16 镇江大力液压马达股份有限公司 Axle valve flow distribution cycloid hydraulic motor
CN103742353A (en) * 2013-12-21 2014-04-23 镇江大力液压马达股份有限公司 Plane valving cycloid hydraulic motor
CN103742353B (en) * 2013-12-21 2016-01-06 镇江大力液压马达股份有限公司 Flat porting cycloid hydraulic pressure 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
CN104154237A (en) * 2014-07-18 2014-11-19 安徽荃富信息科技有限公司 Vacuum sealing mechanism of rotary shaft
CN106194573A (en) * 2016-08-31 2016-12-07 镇江大力液压马达股份有限公司 A kind of composite rotors assembly and manufacture method thereof
CN106762385A (en) * 2016-12-20 2017-05-31 镇江大力液压马达股份有限公司 A kind of high-speed distributing cycloid hydraulic motor and flow support board fabrication method
CN106762387A (en) * 2017-01-06 2017-05-31 镇江大力液压马达股份有限公司 A kind of body shell positioning high-speed distributing cycloid hydraulic motor with protecgulum

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080507

Termination date: 20160411

CF01 Termination of patent right due to non-payment of annual fee