CN201653835U - Creep fatigue testing machine - Google Patents

Creep fatigue testing machine Download PDF

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Publication number
CN201653835U
CN201653835U CN2010201537105U CN201020153710U CN201653835U CN 201653835 U CN201653835 U CN 201653835U CN 2010201537105 U CN2010201537105 U CN 2010201537105U CN 201020153710 U CN201020153710 U CN 201020153710U CN 201653835 U CN201653835 U CN 201653835U
Authority
CN
China
Prior art keywords
fixedlyed
ball
ball screw
link
belt wheel
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
CN2010201537105U
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Chinese (zh)
Inventor
王昌永
王戈
徐鸿雁
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.)
Changchun machine testing Company Limited
Original Assignee
CHANGCHUN RESEARCH INSTITUTE FOR MECHANICAL SCIENCE 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 CHANGCHUN RESEARCH INSTITUTE FOR MECHANICAL SCIENCE Co Ltd filed Critical CHANGCHUN RESEARCH INSTITUTE FOR MECHANICAL SCIENCE Co Ltd
Priority to CN2010201537105U priority Critical patent/CN201653835U/en
Application granted granted Critical
Publication of CN201653835U publication Critical patent/CN201653835U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a creep fatigue testing machine, and belongs to the field of test apparatus. The machine comprises a bearing frame of a mainframe, a high-temperature furnace, a digital controller, a temperature controller, and a computer, wherein a servo driver is connected with a digital controller, an AC servomotor is fixedly connected with a zero-clearance ball speed reducer, an output shaft of the speed reducer is fixedly connected with a small belt wheel through a tensioning sleeve, a ball screw subsidiary is mounted on a bearing cylinder, the lower end of the ball screw is fixedly connected with a big belt wheel through the tensioning sleeve, a pull tube is fixedly connected with a nut of the ball screw subsidiary, the upper end of the pull tube is fixedly connected with a lower pulling pole, a force transducer is fixed on an upper cross beam, and an upper pulling pole is fixedly connected with the force transducer. The machine has the advantages of novel structure, comprehensive functions, high measuring accuracy and automation, convenient and flexile use, reliable and long-time working, and the like.

Description

The creep fatigue testing machine
Technical field
The utility model belongs to the test apparatus field, is used for metal material and carries out static creep relaxation test and dynamically tension and compression circulation low-cycle fatigue and creep fatigue test.
Background technology
Metal material stands a constant or alternate load effect when long under certain temperature environment, its mechanical property is in the engineering fields such as aviation, heat energy, metallurgy and a major issue of essential understanding in the research and teaching.More existing both at home and abroad variety production of the instrument of mechanical property when the test metal material is long are as lever creep testing machine, electronics creep testing machine, electo hydraulic servocontrolled fatigue testing machine etc.Test when the lever creep testing machine only can be done static state length in these testing machines; Electronics creep test function is done when static long the test and the unidirectional dynamic test of zero passage not; Though and electo hydraulic servocontrolled fatigue testing machine can be done the dynamic test of tension and compression zero passage, its power consumption is big, testing expenses height when long.
Summary of the invention
The utility model provides a kind of creep fatigue testing machine, to solve the problem that present testing machine is not suitable for carrying out static creep relaxation test and dynamic tension and compression circulation low-cycle fatigue and creep fatigue test.The technical scheme that the utility model is taked is: flexibly connected by the tensioner cover by two root posts and entablature, middle platen is fixedlyed connected with two root post lower ends, middle platen is fixedlyed connected with base, high temperature furnace respectively with digitial controller, temperature controller connects, the quartz rod Strain Extensometer is fixedlyed connected with high temperature furnace, computing machine is connected with digitial controller, servo-driver is connected with digitial controller, AC servo motor is fixedlyed connected with the zero stand-off ball reducer, motor shaft is fixedlyed connected with this reducer input shaft hole, reducer output shaft is fixedlyed connected with small pulley by the tensioner cover, ball screw pair is contained on the carrying cylinder, this carrying cylinder is fixedlyed connected with middle platen, fixedly connected with big belt wheel with the tensioner cover in the ball-screw lower end, link to each other by polywedge bet between big belt wheel and small pulley, trombone slide is fixedlyed connected with the nut of ball screw pair, fixedly connected with lower link in the trombone slide upper end, force cell is fixed on the entablature, upper connecting rod is fixedlyed connected with force cell, is connected push rod between upper connecting rod and lower link.
In order to adapt to the different needs of static and dynamic test, the main frame entablature can move up and down, and test space is adjustable.On the basis that does not increase attachment device, this machine utilizes load maintainer to promote entablature.Between upper connecting rod and lower link, add push rod, unclamp the tensioner cover between entablature and two columns, drive load maintainer and lower link is risen or descend, promote the entablature lifting thus, tighten the tensioner cover after entablature puts in place.
During for assurance tension and compression CYCLIC LOADING, during test power zero passage pause can not be arranged, key is that the transmission link of load maintainer can not be gapped, and this machine has adopted the electromechanical servo load maintainer that is made of AC servo motor, zero stand-off ball reducer, polywedge bet transmission and ball-screw.AC servo motor is fixed on the ball reducer of zero stand-off, and motor shaft directly links to each other with the input hole of speed reduction unit, the gap of having avoided intermediate link to exist.Reducer output shaft with drive the ball-screw rotation by polywedge bet and large and small belt wheel.Large and small belt wheel all adopts the tensioner cover with being connected of reducer shaft and ballscrew shaft, avoids adopting key to connect issuable gap.Fixing trombone slide and lower link on the nut of ball screw pair, the effect screw owing to guide arm during the ball-screw rotation can only move up and down.Because the zero stand-off ball reducer is to adopt ball and eccentric disc transmission, there is not the gap in forward and reverse motion when commutating.The polywedge bet transmission also can not be skidded under the enough preceding topic of expanding force.Ball screw pair gives tight power, and there is not the gap in forward and reverse motion yet.This has just guaranteed that whole loading system tension and compression zero passage circulation time does not pause.
The utility model has the advantages that novel structure, on a testing machine, both can carry out static creep, lax, creep rupture test; Can carry out La La or tension and compression circulation low-cycle fatigue and creep fatigue test again.Have that function is complete, measuring accuracy and robotization height, easy to use flexibly, characteristics such as reliable operation when long.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Flexibly connect by tensioner cover 4 by two root posts 1 and entablature 3, middle platen 12 is fixedlyed connected with two root post lower ends, middle platen is fixedlyed connected with base 19, high temperature furnace 6 respectively with digitial controller 21, temperature controller 23 connects, quartz rod Strain Extensometer 8 is fixedlyed connected with high temperature furnace, computing machine 22 is connected with digitial controller, servo-driver 20 is connected with digitial controller, AC servo motor 14 is fixedlyed connected with zero stand-off ball reducer 15, motor shaft is fixedlyed connected with this reducer input shaft hole, reducer output shaft is fixedlyed connected with small pulley 17 by the tensioner cover, ball screw pair 11 is contained on the carrying cylinder 13, this carrying cylinder is fixedlyed connected with middle platen 12, fixedly connected with big belt wheel 18 with the tensioner cover in the ball-screw lower end, link to each other by polywedge bet 16 between big belt wheel and small pulley, trombone slide 10 is fixedlyed connected with the nut of ball screw pair, fixedly connected with lower link 9 in trombone slide 10 upper ends, force cell 2 is fixed on the entablature 3, upper connecting rod 5 is fixedlyed connected with force cell, is connected push rod 7 between upper connecting rod and lower link.
The course of work: motor rotates through the leading screw that the polywedge bet transmission drives ball screw pair by speed reduction unit, because a guide arm is arranged on the nut of ball screw pair, it can not be rotated can only move up and down, and applies test power by trombone slide and the 9 pairs of samples of lower link that are fixed on the nut; The power that affacts on the sample is measured by force cell by upper connecting rod 5.The signal of force cell enters controller, drives AC servo motor by controller by servo-driver 20, drives ball-screw by motor by speed reduction unit again, constitutes a closed loop servo system thus.This system has and is quick on the draw, and the servo-actuated performance is good, running steadily, characteristics such as reliable operation when long.
High temperature furnace 6 is housed around the sample, and for sample provides the hot test environment of requirement, quartz rod Strain Extensometer 8 is inserted from the high temperature furnace side and is pushed up on the sample marking distance, and the distortion that sample produces under the effect of test power is measured by extensometer.
Slave computer and master system are formed in digitial controller and computing machine communication, can finish process of the test control and number a tree name acquisition process to main frame.

Claims (1)

1. creep fatigue testing machine, it is characterized in that: flexibly connect by the tensioner cover by two root posts and entablature, middle platen is fixedlyed connected with two root post lower ends, middle platen is fixedlyed connected with base, high temperature furnace respectively with digitial controller, temperature controller connects, the quartz rod Strain Extensometer is fixedlyed connected with high temperature furnace, computing machine is connected with digitial controller, servo-driver is connected with digitial controller, AC servo motor is fixedlyed connected with the zero stand-off ball reducer, motor shaft is fixedlyed connected with this reducer input shaft hole, reducer output shaft is fixedlyed connected with small pulley by the tensioner cover, ball screw pair is contained on the carrying cylinder, this carrying cylinder is fixedlyed connected with middle platen, fixedly connected with big belt wheel with the tensioner cover in the ball-screw lower end, link to each other by polywedge bet between big belt wheel and small pulley, trombone slide is fixedlyed connected with the nut of ball screw pair, fixedly connected with lower link in the trombone slide upper end, force cell is fixed on the entablature, upper connecting rod is fixedlyed connected with force cell, is connected push rod between upper connecting rod and lower link.
CN2010201537105U 2010-04-09 2010-04-09 Creep fatigue testing machine Expired - Fee Related CN201653835U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201537105U CN201653835U (en) 2010-04-09 2010-04-09 Creep fatigue testing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201537105U CN201653835U (en) 2010-04-09 2010-04-09 Creep fatigue testing machine

Publications (1)

Publication Number Publication Date
CN201653835U true CN201653835U (en) 2010-11-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010201537105U Expired - Fee Related CN201653835U (en) 2010-04-09 2010-04-09 Creep fatigue testing machine

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Country Link
CN (1) CN201653835U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102621011A (en) * 2012-03-28 2012-08-01 天津大学 Subminiature minimal invasion high-temperature creep fatigue testing machine and application thereof
CN102967508A (en) * 2012-11-27 2013-03-13 北京大学 Device and method for testing ultrahigh-temperature indentation load-displacement curve
CN103776702A (en) * 2014-01-16 2014-05-07 西安交通大学 Low-cycle fatigue testing device and method under corrosion and high-temperature environments
CN103884603A (en) * 2014-04-02 2014-06-25 华东理工大学 Creep deformation-fatigue crack growth testing device and corresponding testing method
CN104777040A (en) * 2015-02-02 2015-07-15 广东电网有限责任公司电力科学研究院 Biaxial stress high temperature creep deformation test apparatus
CN110646281A (en) * 2019-09-10 2020-01-03 广西大学 Tensile testing machine suitable for low cycle fatigue test

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102621011A (en) * 2012-03-28 2012-08-01 天津大学 Subminiature minimal invasion high-temperature creep fatigue testing machine and application thereof
CN102621011B (en) * 2012-03-28 2014-02-26 天津大学 Subminiature minimal invasion high-temperature creep fatigue testing machine and application thereof
CN102967508A (en) * 2012-11-27 2013-03-13 北京大学 Device and method for testing ultrahigh-temperature indentation load-displacement curve
CN102967508B (en) * 2012-11-27 2014-07-02 北京大学 Method for testing ultrahigh-temperature indentation load-displacement curve
CN103776702A (en) * 2014-01-16 2014-05-07 西安交通大学 Low-cycle fatigue testing device and method under corrosion and high-temperature environments
CN103776702B (en) * 2014-01-16 2016-01-13 西安交通大学 A kind of corrosion and hot environment under low cycle fatigue test device and method
CN103884603A (en) * 2014-04-02 2014-06-25 华东理工大学 Creep deformation-fatigue crack growth testing device and corresponding testing method
CN104777040A (en) * 2015-02-02 2015-07-15 广东电网有限责任公司电力科学研究院 Biaxial stress high temperature creep deformation test apparatus
CN110646281A (en) * 2019-09-10 2020-01-03 广西大学 Tensile testing machine suitable for low cycle fatigue test

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
C41 Transfer of patent application or patent right or utility model
ASS Succession or assignment of patent right

Owner name: CHANGCHUN CHINA MACHINERY TESTING CO., LTD.

Free format text: FORMER OWNER: CHANGCHUN ACADEMY OF MACHINERY SCIENCE + TECHNOLOGY CO., LTD.

Effective date: 20110623

TR01 Transfer of patent right

Effective date of registration: 20110623

Address after: 130012 No. 1118, Silicon Valley Avenue, Changchun, Jilin

Patentee after: Changchun machine testing Company Limited

Address before: 130012 No. 1118, Silicon Valley Avenue, Changchun, Jilin

Patentee before: Changchun Research Institute for Mechanical Science Co., Ltd.

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

Granted publication date: 20101124

Termination date: 20140409

C17 Cessation of patent right