CN110778672A - Planetary roller screw type inerter and inerter coefficient calculation method thereof - Google Patents

Planetary roller screw type inerter and inerter coefficient calculation method thereof Download PDF

Info

Publication number
CN110778672A
CN110778672A CN201911105741.5A CN201911105741A CN110778672A CN 110778672 A CN110778672 A CN 110778672A CN 201911105741 A CN201911105741 A CN 201911105741A CN 110778672 A CN110778672 A CN 110778672A
Authority
CN
China
Prior art keywords
planetary roller
flywheel
shell
inerter
screw
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
CN201911105741.5A
Other languages
Chinese (zh)
Inventor
温华兵
张坤
刘伟
刘尊程
袁桐桐
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.)
Jiangsu University of Science and Technology
Original Assignee
Jiangsu University of Science and Technology
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 Jiangsu University of Science and Technology filed Critical Jiangsu University of Science and Technology
Priority to CN201911105741.5A priority Critical patent/CN110778672A/en
Publication of CN110778672A publication Critical patent/CN110778672A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H25/00Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20Screw mechanisms
    • F16H25/22Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2247Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
    • F16H25/2252Planetary rollers between nut and screw
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/30Flywheels
    • F16F15/315Flywheels characterised by their supporting arrangement, e.g. mountings, cages, securing inertia member to shaft
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H25/00Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20Screw mechanisms
    • F16H25/24Elements essential to such mechanisms, e.g. screws, nuts

Abstract

The invention discloses a planetary roller screw type inerter and an inerter coefficient calculation method thereof, wherein the planetary roller screw type inerter comprises a shell, the shell comprises an upper shell and a lower shell, the upper shell and the lower shell are connected through bolts to form a cavity, a planetary roller screw type inerter assembly is arranged in the cavity, the planetary roller screw type inerter assembly comprises a central screw, a planetary roller, a shaft end baffle and a flywheel, the central screw is positioned at the center of the flywheel and is in threaded engagement with the planetary roller, two ends of the planetary roller are rotatably arranged in the shaft end baffle, the shaft end baffle is fixed at the center of the upper surface and the lower surface of the flywheel through screws, the planetary roller is in threaded engagement with the flywheel, and the flywheel is rotatably arranged in the cavity through a bearing. The invention adopts the planet roller and the flywheel to jointly generate inertia effect, and effectively improves the inertia-mass ratio and the applicability of the inertia container through the revolution and rotation dual motion of the planet roller.

Description

Planetary roller screw type inerter and inerter coefficient calculation method thereof
Technical Field
The invention relates to the technical field of inerter containers, in particular to a planetary roller screw type inerter container and an inerter coefficient calculation method thereof.
Background
The inerter is a novel two-end-point mechanical device with good low-frequency vibration isolation performance, has been well applied to the fields of automobile suspensions, train suspensions, aircraft undercarriages, high-rise buildings and the like, and has good low-frequency vibration attenuation effect in a vibration attenuation system.
The output force of the inerter is in direct proportion to the relative acceleration at two ends, the dynamic characteristic of large mass can be realized by small mass, and the structural form of vibration control is greatly widened. However, the inerter is a two-end element, and when the inerter is used as an inertial element in applications such as a dynamic vibration absorber, the action form of the inerter is greatly different from that of a single mass body, and the problems of narrowing of a vibration damping frequency band and the like are inevitably caused. In addition, the inerter with a fixed structure has the inherent defects that the structural parameters cannot be adjusted when the radial size of the flywheel is limited, and the inertia-mass ratio of the ball screw type inerter cannot be changed.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a planetary roller screw type inerter and an inerter coefficient calculation method thereof, and solves the technical problem that the inerter ratio of the conventional inerter with a fixed structure cannot be changed because structural parameters cannot be adjusted and the conventional inerter cannot adapt to variable vibration input when the radial size of a flywheel is limited.
The technical scheme is as follows: the invention discloses a planetary roller screw type inerter, which comprises a shell, wherein the shell comprises an upper shell and a lower shell, the upper shell and the lower shell are connected through bolts to form a cavity, a planetary roller screw type inerter assembly is arranged in the cavity, the planetary roller screw type inerter assembly comprises a central screw, a planetary roller, a shaft end baffle and a flywheel, the central screw is positioned at the center of the flywheel and is in threaded engagement with the planetary roller, two ends of the planetary roller are rotatably arranged in the shaft end baffle, the shaft end baffle is fixed at the center of the upper surface and the lower surface of the flywheel through screws, the planetary roller is in threaded engagement with the flywheel, and the flywheel is rotatably arranged in the cavity through a bearing.
Furthermore, the planet rollers are provided with a plurality of groups, the plurality of groups of planet rollers are annularly distributed on the periphery of the central screw rod by taking the center of the central screw rod as a circle center, and two ends of the plurality of groups of planet rollers are rotatably arranged on the shaft end baffle plate through the mounting holes in the shaft end baffle plate.
Furthermore, the outer ring of the bearing is clamped between the upper shell and the lower shell which are positioned in the cavity, the inner ring of the bearing is clamped on the side surface of the flywheel, and the flywheel and the shell are of a structure capable of rotating relatively.
Furthermore, a through hole is formed in the center of the upper shell, and the central screw rod penetrates through the through hole of the upper shell to move up and down; the lower shell is a hollow shell with a sealed bottom, the center of the bottom of the lower shell extends downwards to form a hollow cylindrical structure, the diameter of the hollow cylindrical structure is smaller than that of the lower shell, and the bottom end of the central lead screw moves up and down in the hollow cylindrical structure of the lower shell.
Furthermore, an upper lifting lug is arranged at the top end of the central screw rod extending out of the upper shell; and a lower lifting lug is arranged at the bottom end of the hollow cylindrical structure of the lower shell.
Further, the material of the planetary roller is zirconium or 30 Cr; and the thread parts of the central screw rod and the planetary roller are both subjected to quenching treatment or sprayed with Teflon.
The invention also comprises a method for calculating the inertance coefficient of the planetary roller screw type inerter, which comprises the following steps:
(1) let x 1、x 2Is the displacement of two ends of the inertia container, R is the radius of the outer ring of the flywheel, R 2The radius of the planetary roller is r, and the radius of the screw is r 1The height of the flywheel and the planet roller is h, and the height is obtained according to the law of energy conservation:
f-inertial container output force, J FFlywheel moment of inertia, J Z1-planetary roller selfMoment of inertia of rotation, J Z2Planetary roller revolution moment of inertia, ω FFlywheel-lead screw relative angular velocity, ω Z1Planetary roller rotational angular velocity, ω Z2-planetary roller revolution angular speed, N-number of planetary rollers;
the two sides of the formula (1) are differentiated simultaneously to obtain:
F(v 1-v 2)=J Fω Fα F+N(J Z1ω Z1α Z1+J Z2ω Z2α Z2) (2)
formula (III) α FFlywheel-lead screw relative angular acceleration, α Z1Acceleration of the rotational angle of the planet rollers, α Z2Angular acceleration of revolution of planetary rollers, v 1、v 2-velocity at both ends of inerter;
(2) referring to a planetary gear train, the transmission relation of the lead screw, the planetary roller and the flywheel is as follows:
substituting the formulas (3) and (4) into the formula (2) to obtain:
according to the transmission relationship of the screw rod, the following steps are obtained:
in the formula p-lead screw lead, a 1、a 2-two-terminal acceleration;
substituting formula (6) into formula (5) to obtain:
(3) the density of the flywheel and the planetary roller is rho, and the mass of the flywheel and the planetary roller is as follows:
in the formula m FFlywheel mass, m Z-a single planetary roller mass;
the moment of inertia is:
substituting (9) into (7) to obtain:
according to the formula (10), the output force of the planetary roller type inerter is in direct proportion to the acceleration at two ends of the planetary roller type inerter, and the definition of the mechanical characteristics of the inerter is met; therefore, the specific expression of the inertance coefficient of the inerter is as follows:
the inertance coefficient b is determined by the planetary roller radius and height, the flywheel radius and height, the number of planetary rollers, the screw lead and radius, and the material density.
The working principle is as follows:
the inertia container is essentially a force amplification structure, when equal and opposite forces are applied to the centers of the upper lifting lug and the lower lifting lug along the axial direction, the upper lifting lug and the lower lifting lug do relative linear motion to generate relative displacement, the linear motion of the central screw rod is converted into the rotary motion of the flywheel and the planetary roller, and the central screw rod drives the planetary roller to rotate so as to drive the flywheel to rotate, so that the flywheel inertia is encapsulated. Inerter vessels are capable of converting several hundred kilograms of inertial mass into only several hundred grams of flywheel rotation, thereby absorbing external energy.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
compared with the traditional ball screw type inerter, the planetary roller type inerter has more inertial components and planetary rollers which can be used as transmission components at the same time, and the number and the radius of the planetary rollers can be adjusted when the radial size of a flywheel is limited, so that the inerter coefficient and the inerter ratio can be improved; when the radial size and the mass of the flywheel are the same, the acting force of the planetary roller type inerter is larger than that of the traditional roller screw type inerter, and the mechanical property of the planetary roller type inerter is obviously superior to that of the traditional roller screw type inerter.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is an enlarged view of the planetary roller screw inerter assembly of the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The invention is further described below with reference to the following figures and examples:
as shown in fig. 1 to 3, the planetary roller screw inertial container of the present invention comprises a housing, the housing comprises an upper housing 1 and a lower housing 2, the upper housing 1 and the lower housing 2 are connected by a bolt 12 to form a cavity 3, a planetary roller screw inertial container assembly is arranged in the cavity 3, the planetary roller screw inertial container assembly comprises a central screw 4, a planetary roller 5, a shaft end baffle 6 and a flywheel 7, the central screw 4 is located at the center of the flywheel 7 and is in threaded engagement with the planetary roller 5, the planetary roller 5 is made of zirconium or 30Cr, the threaded portions of the central screw 4 and the planetary roller 5 are respectively subjected to quenching treatment or spray coating with teflon which can increase the heat resistance and low friction of the threaded portions, two ends of the planetary roller 5 are rotatably mounted inside the shaft end baffle 6, the baffle 6 is fixed at the centers of the upper and lower surfaces of the flywheel 7 by a screw 13, the planetary roller 5 is meshed with the flywheel 7 through threads, and the flywheel 7 is rotatably arranged in the cavity 3 through a bearing 8;
the five groups of planet rollers 5 are distributed on the periphery of the central screw rod 4 in an annular array mode by taking the center of the central screw rod 4 as a circle center, two ends of the five groups of planet rollers 5 are rotatably arranged on the shaft end baffle 6 through mounting holes in the shaft end baffle 6, and bearings are arranged in the mounting holes;
the outer ring of the bearing 8 is clamped between the upper shell 1 and the lower shell 2 which are positioned in the cavity 3, and the inner ring of the bearing 8 is clamped on the side surface of the flywheel 7, so that the flywheel 7 and the shell are in a relative rotating structure;
a through hole is formed in the center of the upper shell 1, and the central screw rod 4 penetrates through the through hole of the upper shell 1 to move up and down; the lower shell 2 is a hollow shell with a sealed bottom, the center of the bottom of the lower shell 2 extends downwards to form a hollow cylindrical structure 9, the diameter of the hollow cylindrical structure 9 is smaller than that of the lower shell 2, and the bottom end of the central screw rod 4 moves up and down in the hollow cylindrical structure 9 of the lower shell 2; the top end of the central screw rod 4 extending out of the upper shell 1 is provided with an upper lifting lug 10; the bottom end of the hollow cylindrical structure 9 of the lower shell 2 is provided with a lower lifting lug 11,
when equal and reverse force is applied to the centers of the upper lifting lug 10 and the lower lifting lug 11 along the axial direction, the upper lifting lug 10 and the lower lifting lug 11 perform relative linear motion to generate relative displacement, the linear motion of the central screw rod 4 is converted into the rotary motion of the flywheel 7 and the planetary roller 5, the central screw rod 4 drives the planetary roller 5 to rotate so as to drive the flywheel 7 to rotate, and therefore the inertia of the flywheel 7 is encapsulated, and the inertia container can convert hundreds of kilograms of inertia mass into hundreds of grams of rotation of the flywheel 7, so that the external energy is absorbed;
the invention also comprises a method for calculating the inertance coefficient of the planetary roller screw type inerter, which comprises the following steps:
(1) let x 1、x 2Is the displacement of two ends of the inertia container, R is the radius of the outer ring of the flywheel, R 2The radius of the planetary roller is r, and the radius of the screw is r 1The height of the flywheel and the planet roller is h, and the height is obtained according to the law of energy conservation:
f-inertial container output force, J FFlywheel moment of inertia, J Z1Planetary roller self-rotating moment of inertia, J Z2Planetary roller revolution moment of inertia, ω FFlywheel-lead screw relative angular velocity, ω Z1Planetary roller rotational angular velocity, ω Z2-planetary roller revolution angular speed, N-number of planetary rollers;
the two sides of the formula (1) are differentiated simultaneously to obtain:
F(v 1-v 2)=J Fω Fα F+N(J Z1ω Z1α Z1+J Z2ω Z2α Z2) (2)
formula (III) α FFlywheel-lead screw relative angular acceleration, α Z1Acceleration of the rotational angle of the planet rollers, α Z2Angular acceleration of revolution of planetary rollers, v 1、v 2-velocity at both ends of inerter;
(2) referring to a planetary gear train, the transmission relation of the lead screw, the planetary roller and the flywheel is as follows:
substituting the formulas (3) and (4) into the formula (2) to obtain:
according to the transmission relationship of the screw rod, the following steps are obtained:
in the formula p-lead screw lead, a 1、a 2-two-terminal acceleration;
substituting formula (6) into formula (5) to obtain:
(3) the density of the flywheel and the planetary roller is rho, and the mass of the flywheel and the planetary roller is as follows:
in the formula m FFlywheel mass, m Z-a single planetary roller mass;
the moment of inertia is:
substituting (9) into (7) to obtain:
according to the formula (10), the output force of the planetary roller type inerter is in direct proportion to the acceleration at two ends of the planetary roller type inerter, and the definition of the mechanical characteristics of the inerter is met; therefore, the specific expression of the inertance coefficient of the inerter is as follows:
the inertance coefficient b is determined by the planetary roller radius and height, the flywheel radius and height, the number of planetary rollers, the screw lead and radius, and the material density.
The inerter coefficient b of the invention is not only related to the radius and height of the flywheel, lead screw lead and radius and material density, but also related to the radius and height of the planet roller and the number of the planet rollers, when the radial size of the flywheel 7 is limited, the structure parameters can not be adjusted, the inerter ratio can not be changed in the prior inerter with a fixed structure, so that the inerter coefficient of the inerter is a fixed value, and when the radial size of the flywheel 7 is limited, the number and radius of the planet rollers 5 can be changed, so that when the radial size of the flywheel is limited, the inerter coefficient and the inerter ratio can be improved; the acting force of the planetary roller type inerter is larger than that of the traditional roller screw type inerter, and the mechanical property of the planetary roller type inerter is obviously superior to that of the traditional roller screw type inerter.

Claims (7)

1. The utility model provides a planet roller screw formula is used to container, includes the casing, its characterized in that: the shell comprises an upper shell and a lower shell, the upper shell and the lower shell are connected through a bolt to form a cavity, a planetary roller screw type inertial volume assembly is arranged in the cavity and comprises a central screw, a planetary roller, a shaft end baffle and a flywheel, the central screw is located at the center of the flywheel and is in threaded engagement with the planetary roller, two ends of the planetary roller are rotatably arranged in the shaft end baffle, the shaft end baffle is fixed at the center of the upper surface and the lower surface of the flywheel through screws, the planetary roller is in threaded engagement with the flywheel, and the flywheel is rotatably arranged in the cavity through a bearing.
2. The planetary roller screw inerter of claim 1, wherein: the planetary rollers are provided with a plurality of groups, the plurality of groups of planetary rollers are annularly arrayed and distributed on the peripheral side of the central screw rod by taking the center of the central screw rod as a circle center, and two ends of the plurality of groups of planetary rollers are rotatably arranged on the shaft end baffle plate through the mounting holes in the shaft end baffle plate.
3. The planetary roller screw inerter of claim 1, wherein: the outer ring of the bearing is clamped between the upper shell and the lower shell which are positioned in the cavity, the inner ring of the bearing is clamped on the side surface of the flywheel, and the flywheel and the shell are of a structure capable of rotating relatively.
4. The planetary roller screw inerter of claim 1, wherein: a through hole is formed in the center of the upper shell, and the central screw rod penetrates through the through hole of the upper shell to move up and down; the lower shell is a hollow shell with a sealed bottom, the center of the bottom of the lower shell extends downwards to form a hollow cylindrical structure, the diameter of the hollow cylindrical structure is smaller than that of the lower shell, and the bottom end of the central lead screw moves up and down in the hollow cylindrical structure of the lower shell.
5. The planetary roller screw inerter of claim 4, wherein: the top end of the central screw rod extending out of the upper shell is provided with an upper lifting lug; and a lower lifting lug is arranged at the bottom end of the hollow cylindrical structure of the lower shell.
6. The planetary roller screw inerter of claim 1, wherein: the material of the planet roller is zirconium or 30 Cr; and the thread parts of the central screw rod and the planetary roller are both subjected to quenching treatment or sprayed with Teflon.
7. A method for calculating an inerter coefficient of a planetary roller screw type inerter is characterized by comprising the following steps:
(1) let x 1、x 2Is the displacement of two ends of the inertia container, R is the radius of the outer ring of the flywheel, R 2The radius of the planetary roller is r, and the radius of the screw is r 1The height of the flywheel and the planet roller is h, and the height is obtained according to the law of energy conservation:
f-inertial container output force, J FFlywheel moment of inertia, J Z1Planetary roller self-rotating moment of inertia, J Z2Planetary roller revolution moment of inertia, ω FFlywheel-lead screw relative angular velocity, ω Z1Planetary roller rotational angular velocity, ω Z2Planetary roller revolution angular speed, N-planetThe number of rollers;
the two sides of the formula (1) are differentiated simultaneously to obtain:
F(v 1-v 2)=J Fω Fα F+N(J Z1ω Z1α Z1+J Z2ω Z2α Z2) (2)
formula (III) α FFlywheel-lead screw relative angular acceleration, α Z1Acceleration of the rotational angle of the planet rollers, α Z2Angular acceleration of revolution of planetary rollers, v 1、v 2-velocity at both ends of inerter;
(2) referring to a planetary gear train, the transmission relation of the lead screw, the planetary roller and the flywheel is as follows:
substituting the formulas (3) and (4) into the formula (2) to obtain:
according to the transmission relationship of the screw rod, the following steps are obtained:
in the formula p-lead screw lead, a 1、a 2-two-terminal acceleration;
substituting formula (6) into formula (5) to obtain:
(3) the density of the flywheel and the planetary roller is rho, and the mass of the flywheel and the planetary roller is as follows:
in the formula m FFlywheel mass, m Z-a single planetary roller mass;
the moment of inertia is:
substituting (9) into (7) to obtain:
according to the formula (10), the output force of the planetary roller type inerter is in direct proportion to the acceleration at two ends of the planetary roller type inerter, and the definition of the mechanical characteristics of the inerter is met; therefore, the specific expression of the inertance coefficient of the inerter is as follows:
the inertance coefficient b is determined by the planetary roller radius and height, the flywheel radius and height, the number of planetary rollers, the screw lead and radius, and the material density.
CN201911105741.5A 2019-11-13 2019-11-13 Planetary roller screw type inerter and inerter coefficient calculation method thereof Pending CN110778672A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911105741.5A CN110778672A (en) 2019-11-13 2019-11-13 Planetary roller screw type inerter and inerter coefficient calculation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911105741.5A CN110778672A (en) 2019-11-13 2019-11-13 Planetary roller screw type inerter and inerter coefficient calculation method thereof

Publications (1)

Publication Number Publication Date
CN110778672A true CN110778672A (en) 2020-02-11

Family

ID=69390746

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911105741.5A Pending CN110778672A (en) 2019-11-13 2019-11-13 Planetary roller screw type inerter and inerter coefficient calculation method thereof

Country Status (1)

Country Link
CN (1) CN110778672A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111287916A (en) * 2020-01-20 2020-06-16 武汉理工大学 Tuned collision inerter mass damping device for fan

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147151A (en) * 1983-02-09 1984-08-23 Tsubakimoto Seikou:Kk Retaining mechanism of retainer ring for roller screw
US4679664A (en) * 1983-12-27 1987-07-14 Carsten Rosendal Blanking impact absorber
WO2009104578A1 (en) * 2008-02-20 2009-08-27 Ntn株式会社 Electrically operated linear actuator and electrically operated braking system
CN103802343A (en) * 2014-01-17 2014-05-21 西安交通大学 Two-way horizontal servo pressure machine for transmission of planet roller lead screw
CN105782342A (en) * 2016-04-27 2016-07-20 江苏科技大学 Ball screw type inerter with adjustable inerter value
CN108488342A (en) * 2018-02-11 2018-09-04 北京航天自动控制研究所 A kind of planetary roller screw pair having both vibration damping and refrigerating function
CN109667906A (en) * 2019-01-17 2019-04-23 苏春光 The planetary roller screw of ring grain screw rod matching thread axle sleeve
CN110056603A (en) * 2018-12-24 2019-07-26 江苏铁科新材料股份有限公司 A kind of external mounting type planetary roller screw-rubber composite vibration reducing device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147151A (en) * 1983-02-09 1984-08-23 Tsubakimoto Seikou:Kk Retaining mechanism of retainer ring for roller screw
US4679664A (en) * 1983-12-27 1987-07-14 Carsten Rosendal Blanking impact absorber
WO2009104578A1 (en) * 2008-02-20 2009-08-27 Ntn株式会社 Electrically operated linear actuator and electrically operated braking system
CN103802343A (en) * 2014-01-17 2014-05-21 西安交通大学 Two-way horizontal servo pressure machine for transmission of planet roller lead screw
CN105782342A (en) * 2016-04-27 2016-07-20 江苏科技大学 Ball screw type inerter with adjustable inerter value
CN108488342A (en) * 2018-02-11 2018-09-04 北京航天自动控制研究所 A kind of planetary roller screw pair having both vibration damping and refrigerating function
CN110056603A (en) * 2018-12-24 2019-07-26 江苏铁科新材料股份有限公司 A kind of external mounting type planetary roller screw-rubber composite vibration reducing device
CN109667906A (en) * 2019-01-17 2019-04-23 苏春光 The planetary roller screw of ring grain screw rod matching thread axle sleeve

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
葛正等: "行星飞轮式滚珠丝杠惯容器设计与特性分析", 《农业机械学报》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111287916A (en) * 2020-01-20 2020-06-16 武汉理工大学 Tuned collision inerter mass damping device for fan

Similar Documents

Publication Publication Date Title
US3968700A (en) Device for converting rotary motion into a unidirectional linear motion
EP0640192B1 (en) An unbalance compensating method and apparatus
US4002043A (en) Apparatus for absorbing torque fluctuations produced by an internal combustion engine
US8821338B2 (en) Elastic rotary actuator
US4896567A (en) Planetary transmission mechanism and device of involute gears with complex minor tooth difference
US4391163A (en) Planetary gear assembly
CN201111572Y (en) Reducing type mechanical stepless speed changer
CN1503883A (en) Planet gear and use thereof
JP2003161357A (en) Speed-increasing gear for wind power generator
CN105751201B (en) Conveying robot
CN201884569U (en) Cycloid speed reducer
CN201129416Y (en) Novel cycloidal steel ball speed reducer
CN100593653C (en) Internal gear ring outputting planetary speed reducer
CN101858824B (en) Shaft end type torque loader
CN103162963A (en) Helicopter automatic inclinator spherical hinge bearing comprehensive fatigue testing machine
US20090139225A1 (en) Hydraulic inerter mechanism
US3187605A (en) Strain wave drive
CN206216730U (en) A kind of rigidity continuously adjustabe joint based on floating spring
WO2015027684A1 (en) Adjustable rubber shock absorber, vehicle powertrain having same, and vehicle
CN103925340A (en) Cycloid rolling ball speed reducer
CN209309229U (en) A kind of miniature harmonic speed reducer of lightweight
US9511857B2 (en) Disc-shaped aircraft with dual spinning discs
CN102042365A (en) Single row crossed roller bearing harmonic speed reducer
CN106230186B (en) It is a kind of to gather the hollow type harmonic speed reducer for having motor
CN107178574A (en) A kind of powered shock absorption device with generating function

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination