CN103726983A - High-speed flow distribution cycloid hydraulic motor - Google Patents

High-speed flow distribution cycloid hydraulic motor Download PDF

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Publication number
CN103726983A
CN103726983A CN201410009930.3A CN201410009930A CN103726983A CN 103726983 A CN103726983 A CN 103726983A CN 201410009930 A CN201410009930 A CN 201410009930A CN 103726983 A CN103726983 A CN 103726983A
Authority
CN
China
Prior art keywords
rotary shaft
hydraulic motor
cycloid hydraulic
needle bearing
shaft sealing
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.)
Pending
Application number
CN201410009930.3A
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Chinese (zh)
Inventor
张智敏
王志生
翁爱光
盛伟
赵玉
盛玉川
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 MOTOR CO Ltd
Original Assignee
ZHENJIANG DALI HYDRAULIC MOTOR CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZHENJIANG DALI HYDRAULIC MOTOR CO Ltd filed Critical ZHENJIANG DALI HYDRAULIC MOTOR CO Ltd
Priority to CN201410009930.3A priority Critical patent/CN103726983A/en
Publication of CN103726983A publication Critical patent/CN103726983A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a high-speed flow distribution cycloid hydraulic motor, and belongs to the technical field of hydraulic transmission. The cycloid hydraulic motor disclosed by the invention comprises a shell which is provided with a water inlet and a backflow port, and a flow distribution mechanism which is formed by a rotor of a cycloid pin wheel pair and a compound hydraulic flow channel of a flow distribution supporting plate, wherein the shell is provided with a stepped hole for installing a rotary shaft seal, an outer circle of the rotary shaft seal is directly arranged in the stepped hole; a front bearing in the installation direction of the rotary shaft seal is greater than a rear bearing in the length direction; a spacer ring is arranged between a front full-loaded needle roller bearing and a rear full-loaded needle roller bearing; an L-shaped steel skeleton rotary shaft seal sealing and multi-layer sealing structure is adopted. The rotary shaft seal sealing structure of the motor disclosed by the invention is simple, is easy to assemble, and seals reliably; unreliable seal factors are eliminated; the use cost is saved.

Description

High-speed distributing cycloid hydraulic motor
Technical field
The present invention relates to a kind of cycloidal pin wheels engagement pair and realize the cycloid hydraulic motor of hydraulic energy to mechanical energy conversion, especially a kind of high-speed distributing cycloid hydraulic motor with non-linear thin plate complex liquid baric flow road, belongs to hydraulic transmission technology field.
Background technique
Cycloid hydraulic motor is conventional fluid pressure drive device, is also the conventional hydraulic pressure execution device of realizing hydraulic energy and convert to mechanical energy.Cycloid hydraulic motor has the advantages such as volume is little, specific power density is large, efficiency is high, speed range is wide, thereby is widely applied.
The basic structure of such device is on body shell or bonnet, to be shaped with liquid entering hole and refluxing opening, cycloidal pinion engaged pair and flow-distribution mechanism are equipped with in one end, flow-distribution mechanism can be placed on before or after cycloidal pinion engaged pair, in front (body shell one side), be generally axle valve flow, in rear (bonnet one side), be plane flow, the other end is equipped with output shaft.The rotor of cycloidal pinion engaged pair engages with the external gear of couple axle one end by internal spline, and the other end of couple axle is connected with output shaft transmission.During work, flow-distribution mechanism makes liquid entering hole engage chamber connection with the expansion of cycloidal pin wheel set, and the contraction chamber of cycloidal pin wheel set is communicated with refluxing opening.As a result, pressured fluid, from liquid entering hole enters body shell or bonnet, enters the expansion engagement chamber that cycloidal pinion engaged pair forms, and its volume is constantly expanded, and in the contraction engagement chamber that cycloidal pinion engaged pair forms simultaneously, liquid refluxes from refluxing opening; In this process, the rotor of cycloidal pinion engaged pair is expanded the pressure difference that engages chamber with contraction in engagement chamber and orders about rotation, and this is rotated by couple axle and is delivered to output shaft output, thereby realizes the conversion of hydraulic energy to mechanical energy.Meanwhile, flow-distribution mechanism is also by couple axle driven rotary, and the continuous switching connected state going round and beginning again, is continued transfer process.Like this, the output torque that motor just can be continuous, can say that cycloidal pinion engaged pair and flow-distribution mechanism are the cores of oil hydraulic motor.
According to the applicant understood, the runner design form of flow-distribution mechanism has multiple, is mainly divided into two kinds of flow modes of axle flow and plane flow, in hydraulic pressure handbook in early days, all has embodiment.Separately there is a kind of high-speed distributing cycloid hydraulic motor of similar plane distributing construction motor, flow system is relevant with rotor end-face duct, the thrust plate of motor is to integrate (as U.S. patent documents US4717320) with rotor, or at the extending end (as U.S. patent documents US3601513) of the couple axle coordinating with its internal spline, the former its shaft seal sealing assembling is comparatively complicated, correlated parts quantity is many, and it is many unreliable in use can to bring, and causes oil leakage phenomenon.
Summary of the invention
The object of the invention is to: the problem existing for above prior art, by the further investigation of the cycloid secondary motion mechanism to such motor, in application motor configuration to rotating seal ring require high, simple in structure and the reliable high-speed distributing cycloid hydraulic motor of a kind of rotating seal ring is proposed, thereby the movement output of the motor that can make is more steady, and performance is more stable.
The present invention is directed to foregoing invention object, its technological scheme is: high-speed distributing cycloid hydraulic motor, comprise the housing that is shaped with liquid entering hole and refluxing opening, the cycloidal pin wheel set consisting of stator, rotor and pin tooth and the flow-distribution mechanism consisting of the complex liquid baric flow road of flow dunnage and the compound duct of rotor are equipped with in one end of described housing, and the delivery outlet of its other end is supported with the output shaft from stretching out in housing; The rotor of described cycloidal pin wheel set engages with the external gear of couple axle one end by internal spline, and the other end of described couple axle is connected with output shaft transmission; Its improvements are: described housing is shaped with the step hole that rotary shaft sealing is installed, described step hole is directly installed the cylindrical of rotary shaft sealing, described rotary shaft sealing is installed by housing bore the one end that completely fills needle bearing and is installed, the installation dimension that described former and later two completely fill needle bearing is consistent, front end props up to fully support and in dress needle bearing length, is greater than rear end and props up and fully support dress needle bearing, and described front and back completely fill spacer ring is installed between needle bearing.
The rotary shaft sealing sealing diameter of axle of described output shaft and front and back completely fill between the needle bearing installation diameter of axle thrust-bearing and end ring are installed, and described thrust-bearing is resisted against on the shaft shoulder of output shaft.
Above technological scheme is further improved: one end that described couple axle engages with rotor is provided with compensation pad, and described compensation pad does not have external splines.
Above technological scheme is further improved: described rotary shaft sealing seals by L shaped skeleton, and described L shaped skeleton is included in caulking gum, and it is exposed structure that L shaped skeleton leans against hydraulic oil pressure surface, and steel surface does not have rubber packing material.
Compared with the gerotor motor of prior art, after above-mentioned improvement structure of the present invention, to be sealed seal structure simple for motor axis of rotation, assembles simple and easy and sealing is reliable, eliminated unreliable factor many due to part and that assembly relation complexity causes, strengthen the reliability of sealing, saved user cost.
Accompanying drawing explanation
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.
Output shaft 1, key 2 in Fig. 1, dust ring 3, rotary shaft sealing 4, thrust-bearing 5, housing 6, oil port cover 7, rear needle bearing 8, flow dunnage 9, stator 10, rotor 11, pin tooth 12, connecting bolt 13, seal ring 14, steel ball 15, pressure compensation plate 16, compensation pad 17, bonnet 18, seal ring 19, plane bearing 20, seal ring 21, couple axle 22, spacer ring 23, front needle bearing 24, end ring 25, Steel Cable Baffle Ring 26.
Fig. 2 is a kind of structural representation of shaft seal in Fig. 1 embodiment.
Metal frame 1 in Fig. 2, back-up ring 2, caulking gum 3.
Fig. 3 is the another kind of structural representation of rotary shaft sealing in Fig. 1 embodiment.
Sealer 1 in Fig. 3, metal frame 2, metal frame face 2-1.
embodiment one
The high-speed distributing cycloid hydraulic motor of the present embodiment, basic structure as shown in figures 1 and 3, comprise the housing 6 that is shaped with liquid entering hole and refluxing opening, the cycloidal pin wheel set consisting of stator 10, rotor 11 and pin tooth 12 and the flow-distribution mechanism consisting of the complex liquid baric flow road of flow dunnage 9 and the compound duct of rotor 11 are equipped with in one end of described housing 6, and the delivery outlet of its other end is supported with the output shaft 1 from stretching out in housing 6; The rotor 11 of described cycloidal pin wheel set engages with the external gear of couple axle 22 one end by internal spline, and the other end of described couple axle 22 is connected with output shaft 1 transmission; Its improvements are: described housing 6 is shaped with the step hole that rotary shaft sealing 4 is installed, described step hole is directly installed the cylindrical of rotary shaft sealing 4, described rotary shaft sealing 4 is installed by housing bore the one end that completely fills needle bearing and is installed, the installation dimension that described former and later two completely fill needle bearing is consistent, in front needle bearing 24 length, be greater than rear needle bearing 8, between described front needle bearing 24 and rear needle bearing 8, spacer ring 23 is installed, spacer ring 23 is conducive to guarantee the validity of installation between front needle bearing 24 and rear needle bearing 8.
The diameter of axle that the rotary shaft sealing 4 of described output shaft 1 seals and front and back completely fill between the installation diameter of axle of needle bearing thrust-bearing 5 and end ring 25 are installed, described thrust-bearing 5 is resisted against on the shaft shoulder of output shaft, and the shaft shoulder is to be formed by rotary shaft sealing 4 and the installation diameter of axle of front needle bearing 24.
One end that described couple axle 22 engages with rotor 11 is provided with compensation pad 17, and the cylindrical of described compensation pad 17 and the internal spline Spielpassung of rotor 11 are placed.
A kind of structure of described rotary shaft sealing 4 as shown in Figure 2, comprise metal frame 1, back-up ring 2, caulking gum 3, the profile of metal frame 1 is L shaped skeleton, by steel plate punched, formed, in order to guarantee global stability and the rigidity of seal ring, described L shaped skeleton adopts heat treatment process to strengthen intensity and rigidity, and described L shaped skeleton is included in caulking gum 3, it is exposed structure that L shaped skeleton leans against hydraulic oil pressure surface, and steel surface does not have rubber packing material.Caulking gum 3 is made lip structure with output shaft 1 contact position, at lip and L shaped skeleton, increases by a back-up ring 2, and described back-up ring 2 is made by polytetrafluoroethylmaterial material and sealed and contact with output shaft 1.
The another kind of structure of described rotary shaft sealing 4 as shown in Figure 3, comprises sealer 1 in Fig. 3, metal frame 2, metal frame face 2-1.The profile of metal frame 1 is L shaped skeleton, by steel plate punched, formed, in order to guarantee global stability and the rigidity of seal ring, described L shaped skeleton adopts heat treatment process to strengthen intensity and rigidity, described L shaped skeleton is included in caulking gum 3, it is exposed structure that L shaped skeleton leans against hydraulic oil pressure surface 2-1, steel surface does not have rubber packing material, be conducive to the precision that rotary shaft sealing 4 is arranged on the hole of housing 6, guarantee the conformity that lip contacts with output shaft 1, thereby guarantee output shaft 1 rotary seal type.When rotary shaft sealing 4 is installed, pressing Fig. 3 arrow place, guarantee installation precision and the conformity of rotary shaft sealing 4, can more further guarantee shaft seal running accuracy.
Facts have proved, the structure of the high-speed distributing cycloid hydraulic motor of the present embodiment is conducive to the reliable of the installation of rotary shaft sealing and sealability, and the shaft seal structure of employing is also conducive to bear high pressure.It is simple that improvement structure of the present invention makes motor axis of rotation be sealed seal structure, assembles simple and easyly, reduced due to the many unreliable factors that cause with assembly relation complexity of part, strengthened the reliability of sealing, saving user cost.
In addition to the implementation, the present invention can also have other mode of executions, and 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 (8)

1. a high-speed distributing cycloid hydraulic motor, comprise the housing that is shaped with liquid entering hole and refluxing opening, the cycloidal pin wheel set consisting of stator, rotor and pin tooth and the flow-distribution mechanism consisting of the complex liquid baric flow road of flow dunnage and the compound duct of rotor are equipped with in one end of described housing, and the delivery outlet of its other end is supported with the output shaft from stretching out in housing; The rotor of described cycloidal pin wheel set engages with the external gear of couple axle one end by internal spline, and the other end of described couple axle is connected with output shaft transmission; It is characterized in that: described housing is shaped with the step hole that rotary shaft sealing is installed, described step hole is directly installed the cylindrical of rotary shaft sealing, described rotary shaft sealing is installed by housing bore the one end that completely fills needle bearing and is installed, the installation dimension that described former and later two completely fill needle bearing is consistent, and front end props up to fully support and in dress needle bearing length, is greater than rear end and props up and fully support dress needle bearing.
2. high-speed distributing cycloid hydraulic motor according to claim 1, is characterized in that: described front and back completely fill spacer ring is installed between needle bearing.
3. high-speed distributing cycloid hydraulic motor according to claim 2, it is characterized in that: the rotary shaft sealing sealing diameter of axle of described output shaft and front and back completely fill between the needle bearing installation diameter of axle thrust-bearing and end ring are installed, and described thrust-bearing is resisted against on the shaft shoulder of output shaft.
4. high-speed distributing cycloid hydraulic motor according to claim 3, is characterized in that: one end that described couple axle engages with rotor is provided with compensation pad.
5. high-speed distributing cycloid hydraulic motor according to claim 1, is characterized in that: described rotary shaft sealing is by L shaped skeleton, and described L shaped skeleton is included in caulking gum, and it is exposed structure that L shaped skeleton leans against hydraulic oil pressure surface.
6. high-speed distributing cycloid hydraulic motor according to claim 5, is characterized in that: described rotary shaft sealing seals by L shaped skeleton, and described L shaped skeleton is included in caulking gum, and it is exposed structure that L shaped skeleton leans against hydraulic oil pressure surface.
7. high-speed distributing cycloid hydraulic motor according to claim 6, is characterized in that: described rotary shaft sealing increases at lip and L shaped skeleton that a polytetrafluoroethylmaterial material is made and seal with output shaft the back-up ring contacting.
8. high-speed distributing cycloid hydraulic motor according to claim 7, is characterized in that: the L shaped skeleton of described rotary shaft sealing is formed by steel plate punched, and adopts heat treatment process to process.
CN201410009930.3A 2014-01-09 2014-01-09 High-speed flow distribution cycloid hydraulic motor Pending CN103726983A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410009930.3A CN103726983A (en) 2014-01-09 2014-01-09 High-speed flow distribution cycloid hydraulic motor

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Application Number Priority Date Filing Date Title
CN201410009930.3A CN103726983A (en) 2014-01-09 2014-01-09 High-speed flow distribution cycloid hydraulic motor

Publications (1)

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CN103726983A true CN103726983A (en) 2014-04-16

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106704089A (en) * 2016-12-23 2017-05-24 镇江大力液压马达股份有限公司 Flow distribution cycloid hydraulic motor for axial flow valve

Citations (14)

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Publication number Priority date Publication date Assignee Title
US5642889A (en) * 1995-03-17 1997-07-01 Firma Carl Freudenberg Sealing ring
JP2002276817A (en) * 2001-03-21 2002-09-25 Nok Corp Sealing device
CN1932307A (en) * 2006-10-08 2007-03-21 镇江大力液压马达有限责任公司 High-speed distributing cycloid hydraulic motor
CN200965017Y (en) * 2006-11-14 2007-10-24 万向钱潮股份有限公司 Oil seal structure gimbal
CN201057122Y (en) * 2007-04-11 2008-05-07 镇江大力液压马达有限责任公司 Strong-sealing high-speed stream cycloid hydraulic motor and high-pressure rotating shaft seal
CN201347915Y (en) * 2008-09-18 2009-11-18 浙江亚太机电股份有限公司 Plunger type piston arrangement structure in hydraulic drive device of automobile
CN201394772Y (en) * 2009-05-27 2010-02-03 浙江名媛工艺饰品有限公司 Installation structure of main shaft rolling needle bearing of drum-type burnishing machine
CN201496554U (en) * 2009-08-19 2010-06-02 青岛开世密封工业有限公司 Oil seal for vehicle axle
CN201539564U (en) * 2009-06-30 2010-08-04 青岛开世密封工业有限公司 Combined heavy truck hub oil seal
CN202274001U (en) * 2011-10-13 2012-06-13 杭州杰克万向节有限公司 Universal joint assembly with high sealing property
CN102840095A (en) * 2012-09-21 2012-12-26 镇江大力液压马达有限责任公司 Plane distributing cycloidal hydraulic motor for strengthening bearing capacity
CN102865368A (en) * 2011-07-07 2013-01-09 江苏罡阳动力转向器厂 Shell end sealing structure of automobile power steering gear
CN202884029U (en) * 2012-09-26 2013-04-17 太仓市明宇密封件有限公司 Seal ring for shaft
CN203308705U (en) * 2013-06-07 2013-11-27 北京航空航天大学 Permanent magnet servo inner engaged gear type electro-hydraulic pump

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5642889A (en) * 1995-03-17 1997-07-01 Firma Carl Freudenberg Sealing ring
JP2002276817A (en) * 2001-03-21 2002-09-25 Nok Corp Sealing device
CN1932307A (en) * 2006-10-08 2007-03-21 镇江大力液压马达有限责任公司 High-speed distributing cycloid hydraulic motor
CN200965017Y (en) * 2006-11-14 2007-10-24 万向钱潮股份有限公司 Oil seal structure gimbal
CN201057122Y (en) * 2007-04-11 2008-05-07 镇江大力液压马达有限责任公司 Strong-sealing high-speed stream cycloid hydraulic motor and high-pressure rotating shaft seal
CN201347915Y (en) * 2008-09-18 2009-11-18 浙江亚太机电股份有限公司 Plunger type piston arrangement structure in hydraulic drive device of automobile
CN201394772Y (en) * 2009-05-27 2010-02-03 浙江名媛工艺饰品有限公司 Installation structure of main shaft rolling needle bearing of drum-type burnishing machine
CN201539564U (en) * 2009-06-30 2010-08-04 青岛开世密封工业有限公司 Combined heavy truck hub oil seal
CN201496554U (en) * 2009-08-19 2010-06-02 青岛开世密封工业有限公司 Oil seal for vehicle axle
CN102865368A (en) * 2011-07-07 2013-01-09 江苏罡阳动力转向器厂 Shell end sealing structure of automobile power steering gear
CN202274001U (en) * 2011-10-13 2012-06-13 杭州杰克万向节有限公司 Universal joint assembly with high sealing property
CN102840095A (en) * 2012-09-21 2012-12-26 镇江大力液压马达有限责任公司 Plane distributing cycloidal hydraulic motor for strengthening bearing capacity
CN202884029U (en) * 2012-09-26 2013-04-17 太仓市明宇密封件有限公司 Seal ring for shaft
CN203308705U (en) * 2013-06-07 2013-11-27 北京航空航天大学 Permanent magnet servo inner engaged gear type electro-hydraulic pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106704089A (en) * 2016-12-23 2017-05-24 镇江大力液压马达股份有限公司 Flow distribution cycloid hydraulic motor for axial flow valve

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Application publication date: 20140416