CN110849749A - Impact testing machine for linear motor - Google Patents
Impact testing machine for linear motor Download PDFInfo
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- CN110849749A CN110849749A CN201911200095.0A CN201911200095A CN110849749A CN 110849749 A CN110849749 A CN 110849749A CN 201911200095 A CN201911200095 A CN 201911200095A CN 110849749 A CN110849749 A CN 110849749A
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- linear motor
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- protective cover
- motor rotor
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- 238000009863 impact test Methods 0.000 title claims abstract description 19
- 238000012360 testing method Methods 0.000 claims abstract description 27
- 230000001681 protective effect Effects 0.000 claims abstract description 25
- 238000009434 installation Methods 0.000 claims abstract description 5
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 230000006378 damage Effects 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/317—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by electromagnetic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/062—Special adaptations of indicating or recording means with mechanical indicating or recording means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0605—Mechanical indicating, recording or sensing means
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Electromagnetism (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a linear motor impact testing machine, and belongs to the field of impact resistance testing. The invention discloses a linear motor impact test device which comprises a base, a fixed support, a fixed transverse frame, a linear motor, a counterweight device, an impact hammer, a protective cover and a clamping device, wherein the fixed transverse frame is fixedly connected with the base; the fixed support is fixed on the base, and a fixed transverse frame and a counterweight device are arranged on the fixed support; the linear motor comprises a rotor and a stator, the stator is fixed on the fixed cross frame, the upper end of the rotor is connected with the counterweight device, and the lower end of the rotor is connected with the impact hammer; an impact material clamping device is arranged right below the impact hammer, a protective cover is arranged on the outer side of the clamping device, and the protective cover is fixed on the base. Compared with the traditional impact testing machine, the impact testing machine has the advantages of simple structure, small volume and simple installation, and the power of the linear motor and the counterweight device can apply larger impact load to the tested material.
Description
Technical Field
The invention relates to a linear motor impact testing machine, and belongs to the field of impact resistance testing.
Background
The impact testing machine is an experimental machine for testing the impact resistance of a metal material under dynamic load, and is a common testing instrument in the metallurgical industry and related scientific research institutions. Some impact testing machines on the market at present generally have large volume due to large impact load required during testing; even the height of the impact hammer needs to be manually lifted, so that the height of the impact hammer is difficult to ensure to be consistent during each test; during the experiment, the breakage of the test piece can possibly cause damage to the experimenter, and the cleaning of the test piece is also inconvenient.
Disclosure of Invention
The invention aims to solve the problems of large size and difficulty in ensuring the height caused by manual adjustment in the prior art, and provides a linear motor impact testing machine. The linear motor impact testing machine is simple in structure, small in size, simple in installation, strong in impact load and very safe.
In order to solve the technical problems, the invention adopts the following technical scheme:
a linear motor impact testing machine comprises a base, two fixed supports, two fixed cross frames, a counterweight device, a linear motor rotor, a linear motor stator, an impact hammer, a protective cover and a clamping device; the fixed support is fixed on the base, and a fixed transverse frame and a counterweight device are arranged on the fixed support; the linear motor comprises a linear motor rotor and a linear motor stator, the linear motor stator is fixed on the fixed cross frame, the upper end of the linear motor rotor is connected with the counterweight device, and the lower end of the linear motor rotor is connected with the impact hammer; an impact material clamping device is arranged right below the impact hammer, a protective cover is arranged on the outer side of the clamping device, and the protective cover is fixed on the base.
Furthermore, the upper end of the fixed support is provided with a longitudinal guide rail.
Furthermore, a limiting device is arranged at the bottom of the longitudinal guide rail at the upper end of the fixing support.
Furthermore, two ends of the counterweight device are provided with guide mechanisms.
Furthermore, the longitudinal guide rail at the upper end of the fixed support is provided with position scales.
Furthermore, the longitudinal guide rail at the upper end of the fixed support is provided with load scales corresponding to the position scales.
Further, the safety cover is square detachable safety cover.
Furthermore, the counterweight device, the linear motor rotor, the linear motor stator, the impact hammer and the clamping device are positioned on the same vertical line.
Advantageous effects
(1) According to the linear motor impact testing machine, when an alternating current power supply is connected to a stator of a linear motor, a traveling wave magnetic field is generated in an air gap, an electromotive force is induced by a rotor under the cutting of the traveling wave magnetic field to generate current, the current and the magnetic field in the air gap act to generate electromagnetic thrust, the rotor does linear motion under the action of the thrust by fixing the stator, and a reciprocating linear motion characteristic of the linear motor is utilized, the rotor is connected with an impact hammer to perform reciprocating impact testing on a test sample piece, so that the repeated operation of manually lifting the hammer is avoided, the labor is saved, and manual errors are avoided.
(2) According to the linear motor impact testing machine, the linear motor which can be accurately controlled is matched with the position scale on the fixing support, so that the heights of impact hammers are accurately guaranteed to be consistent every time.
(3) According to the linear motor impact testing machine, the square protective cover prevents scraps of a test piece from flying in a mess during an experiment, the personal safety of experimenters is guaranteed, and cleaning work after the experiment is facilitated. And the testing machine has simple structure and small volume.
Drawings
Fig. 1 is a schematic view of the overall structure of the linear motor impact tester of the present invention.
Fig. 2 is a schematic view of the installation of the counterweight guide mechanism and the fixing bracket.
FIG. 3 is a schematic view of the position of the square protective cover and the clamping device.
The device comprises a base 1, a fixed transverse frame 2, a counterweight device 3, a fixed support 4, a linear motor rotor 5, a linear motor stator 6, an impact hammer 7, a protective cover 8 and a clamping device 9.
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures.
Combine fig. 1, a linear electric motor impact tester, its characterized in that: the device comprises a base 1, two fixed supports 4, a fixed transverse frame 2, a counterweight device 3, a linear motor rotor 5, a linear motor stator 6, an impact hammer 7, a protective cover 8 and a clamping device 9; the two fixing brackets 4 are respectively fixed on the base 1; two ends of the fixed transverse frame 2 are respectively fixedly connected with the two fixed brackets 4; the fixed transverse frame 2 and the counterweight device 3 are parallel to each other; the protective cover 8 is fixed on the base 1, and a clamping device 9 is fixed inside the protective cover; one end of a linear motor rotor 5 is fixedly connected with the counterweight device 3, and an impact hammer 7 is installed at the other end of the linear motor rotor penetrating through the fixed cross frame 2; the linear motor stator 6 is arranged outside the linear motor rotor 5; when the winding of the linear motor stator 6 is connected with an alternating current power supply, a traveling wave magnetic field is generated in the air gap, the linear motor rotor 5 induces electromotive force and generates current under the cutting of the traveling wave magnetic field, the current and the magnetic field in the air gap act to generate electromagnetic thrust, the linear motor stator 6 is fixed, and the linear motor rotor 5 makes reciprocating linear motion under the action of the thrust;
a longitudinal guide rail is arranged downwards along the top end of the fixed support 4, and guide mechanisms at two ends of the counterweight device are matched with the guide rail, so that the counterweight mechanism can stably run;
the bottom of the longitudinal guide rail of the fixed support 4 is provided with a limiting device, so that the impact hammer is prevented from falling too much to damage the clamping device;
the longitudinal guide rail on the fixed support 4 is provided with position scales and load scales, so that the rising heights of the impact hammers in each time in the same test can be kept consistent.
The square protective cover 8 is detachably connected with the base 1, the square protective cover can be firmly connected during working, a protective effect is achieved, and test piece scraps can be cleaned detachably after an experiment; the detachable connection can be realized by bolts or buckles.
The counterweight device 3, the linear motor rotor 5, the linear motor stator 6, the impact hammer 7 and the clamping device 9 are positioned on the same vertical line during installation, and the impact direction is guaranteed to be vertical to a test piece each time.
Fixing a test piece to be tested on a clamping device 9, and fixing a square protective cover 8 on a base 1; the height of a linear motor rotor 5 is adjusted through a linear motor, an impact hammer 7 is made to fall at an accurate and proper height according to position scales and load scales on a fixed support, the impact hammer 7 is accelerated through the linear motor, corresponding parameters are calculated through a displacement sensor in the linear motor, and data of the impact are obtained; repeating the test, when the winding of the linear motor stator 6 is connected with an alternating current power supply, a traveling wave magnetic field is generated in the air gap, the linear motor rotor 5 induces electromotive force and generates current under the cutting of the traveling wave magnetic field, the current and the magnetic field in the air gap act to generate electromagnetic thrust, at the moment, the linear motor stator 6 is fixed, the linear motor rotor 5 does reciprocating linear motion under the action of the thrust, and the test sample piece is impacted in a reciprocating mode until the test piece reaches the destruction standard; and the square protective cover 8 is disassembled afterwards, and the scraps are cleaned.
According to the baffle impact test experiment, the linear motor impact tester runs stably, the rotating speed running range is wide, the linear motor still has good performance from 5Hz to 20Hz, the precision and the repeatability are high, a proper feedback device can reach submicron level, the linear motor impact tester has large acceleration during the test, the maximum acceleration can reach 10g, and therefore the linear motor impact tester can realize automatic reciprocating impact test in actual running, and the linear motor impact tester has stable performance and high precision.
The above detailed description is intended to illustrate the objects, aspects and advantages of the present invention, and it should be understood that the above detailed description is only exemplary of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (4)
1. The utility model provides a linear electric motor impact tester which characterized in that: the device comprises a base (1), two fixed supports (4), a fixed transverse frame (2), a counterweight device (3), a linear motor rotor (5), a linear motor stator (6), an impact hammer (7), a protective cover (8) and a clamping device (9); the two fixing supports (4) are respectively fixed on the base (1); two ends of the fixed transverse frame (2) are respectively fixedly connected with the two fixed brackets (4); the fixed transverse frame (2) is parallel to the counterweight device (3); the protective cover (8) is fixed on the base (1), and a clamping device (9) is fixed inside the protective cover; one end of the linear motor rotor (5) is fixedly connected with the counterweight device (3), and the other end of the linear motor rotor penetrating through the fixed cross frame (2) is provided with an impact hammer (7); the linear motor stator (6) is arranged outside the linear motor rotor (5); when the winding of the linear motor stator (6) is connected with an alternating current power supply, a traveling wave magnetic field is generated in an air gap, the linear motor rotor (5) induces electromotive force and generates current under the cutting of the traveling wave magnetic field, the current and the magnetic field in the air gap act to generate electromagnetic thrust, the linear motor stator (6) is fixed at the moment, and the linear motor rotor (5) makes reciprocating linear motion under the action of the thrust;
a longitudinal guide rail is arranged downwards along the top end of the fixed support (4), and guide mechanisms at two ends of the counterweight device are matched with the guide rail, so that the counterweight mechanism can stably run;
the bottom of the longitudinal guide rail of the fixed support (4) is provided with a limiting device, so that the impact hammer is prevented from falling too much to damage the clamping device;
the longitudinal guide rail on the fixed support (4) is provided with position scales and load scales, so that the rising height of the impact hammer in each test can be kept consistent.
2. A linear motor impact tester according to claim (1), characterized in that: the square protective cover (8) is detachably connected with the base (1), the square protective cover can be firmly connected during working, a protective effect is achieved, and test piece scraps can be cleaned detachably after an experiment; the detachable connection can be realized by bolts or buckles.
3. A linear motor impact tester according to claim (1), characterized in that: the counterweight device (3), the linear motor rotor (5), the linear motor stator (6), the impact hammer (7) and the clamping device (9) are positioned on the same vertical line during installation, and the impact direction is guaranteed to be vertical to a test piece at each time.
4. A method of performing an impact test using the test machine of claim (1), or (2), or (3), wherein: fixing a test piece to be tested on a clamping device (9), and fixing a square protective cover (8) on a base (1); the height of a linear motor rotor (5) is adjusted through a linear motor, an impact hammer (7) is made to fall at an accurate and proper height according to position scales and load scales on a fixed support, the impact hammer (7) is accelerated through the linear motor, corresponding parameters are calculated through a displacement sensor in the linear motor, and data of the impact are obtained; the test is repeated, when the winding of the linear motor stator (6) is connected with an alternating current power supply, a traveling wave magnetic field is generated in the air gap, the linear motor rotor (5) induces electromotive force and generates current under the cutting of the traveling wave magnetic field, the current and the magnetic field in the air gap act to generate electromagnetic thrust, the linear motor stator (6) is fixed, the linear motor rotor (5) does reciprocating linear motion under the action of the thrust, and the test sample piece is impacted in a reciprocating mode until the test piece reaches the damage standard; then the square protective cover (8) is disassembled, and the scraps are cleaned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911200095.0A CN110849749A (en) | 2019-11-29 | 2019-11-29 | Impact testing machine for linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911200095.0A CN110849749A (en) | 2019-11-29 | 2019-11-29 | Impact testing machine for linear motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110849749A true CN110849749A (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911200095.0A Pending CN110849749A (en) | 2019-11-29 | 2019-11-29 | Impact testing machine for linear motor |
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| Country | Link |
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| CN (1) | CN110849749A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113433016A (en) * | 2021-06-09 | 2021-09-24 | 大连海事大学 | Dynamic periodic loading reciprocating type friction and wear test device |
| CN117125267A (en) * | 2023-10-26 | 2023-11-28 | 中国飞机强度研究所 | Impact power performance test system and method for landing gear of carrier-based aircraft |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6073338A (en) * | 1983-09-29 | 1985-04-25 | Mitsubishi Electric Corp | Impact testing apparatus |
| CN2127721Y (en) * | 1991-10-25 | 1993-03-03 | 柏飞 | Hammer-blow tamper of linear motor type |
| CN1746499A (en) * | 2005-07-26 | 2006-03-15 | 中国石油化工股份有限公司河南油田分公司石油工程技术研究院 | Lifter of linear motor with double action for reciprocating pump |
| CN101509856A (en) * | 2008-12-30 | 2009-08-19 | 南京理工大学 | Multifunction flexible composite material impact test apparatus |
| CN102788732A (en) * | 2012-07-30 | 2012-11-21 | 中南钻石股份有限公司 | Impact resistance test device for diamond compound sheet |
| CN204128911U (en) * | 2014-07-07 | 2015-01-28 | 苏州电器科学研究院股份有限公司 | A kind of novel impact test apparatus |
| CN104682642A (en) * | 2015-03-13 | 2015-06-03 | 河南理工大学 | Two-degree-of-freedom motor |
| CN105258899A (en) * | 2015-10-30 | 2016-01-20 | 昆山洺九机电有限公司 | Testing machine for impact test |
| CN107228804A (en) * | 2017-06-01 | 2017-10-03 | 中北大学 | A kind of jump bit for vertical mechanical shock test machine |
| CN208606984U (en) * | 2018-08-30 | 2019-03-15 | 苏州中正工程检测有限公司 | A kind of intellectual falling weight impact test device |
-
2019
- 2019-11-29 CN CN201911200095.0A patent/CN110849749A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6073338A (en) * | 1983-09-29 | 1985-04-25 | Mitsubishi Electric Corp | Impact testing apparatus |
| CN2127721Y (en) * | 1991-10-25 | 1993-03-03 | 柏飞 | Hammer-blow tamper of linear motor type |
| CN1746499A (en) * | 2005-07-26 | 2006-03-15 | 中国石油化工股份有限公司河南油田分公司石油工程技术研究院 | Lifter of linear motor with double action for reciprocating pump |
| CN101509856A (en) * | 2008-12-30 | 2009-08-19 | 南京理工大学 | Multifunction flexible composite material impact test apparatus |
| CN102788732A (en) * | 2012-07-30 | 2012-11-21 | 中南钻石股份有限公司 | Impact resistance test device for diamond compound sheet |
| CN204128911U (en) * | 2014-07-07 | 2015-01-28 | 苏州电器科学研究院股份有限公司 | A kind of novel impact test apparatus |
| CN104682642A (en) * | 2015-03-13 | 2015-06-03 | 河南理工大学 | Two-degree-of-freedom motor |
| CN105258899A (en) * | 2015-10-30 | 2016-01-20 | 昆山洺九机电有限公司 | Testing machine for impact test |
| CN107228804A (en) * | 2017-06-01 | 2017-10-03 | 中北大学 | A kind of jump bit for vertical mechanical shock test machine |
| CN208606984U (en) * | 2018-08-30 | 2019-03-15 | 苏州中正工程检测有限公司 | A kind of intellectual falling weight impact test device |
Non-Patent Citations (2)
| Title |
|---|
| 杨铁宁等: "直线电机驱动往复泵流量压力变化规律试验研究", 《石油矿场机械》 * |
| 许大涛等: "自由活塞内燃发电机活塞环摩擦特性研究", 《西安交通大学学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113433016A (en) * | 2021-06-09 | 2021-09-24 | 大连海事大学 | Dynamic periodic loading reciprocating type friction and wear test device |
| CN117125267A (en) * | 2023-10-26 | 2023-11-28 | 中国飞机强度研究所 | Impact power performance test system and method for landing gear of carrier-based aircraft |
| CN117125267B (en) * | 2023-10-26 | 2024-02-02 | 中国飞机强度研究所 | Impact power performance test system and method for landing gear of carrier-based aircraft |
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Application publication date: 20200228 |
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