CN202471505U - Protection and specimen bracket mechanism for hopkinson pressure bar test device - Google Patents

Protection and specimen bracket mechanism for hopkinson pressure bar test device Download PDF

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Publication number
CN202471505U
CN202471505U CN2012200485583U CN201220048558U CN202471505U CN 202471505 U CN202471505 U CN 202471505U CN 2012200485583 U CN2012200485583 U CN 2012200485583U CN 201220048558 U CN201220048558 U CN 201220048558U CN 202471505 U CN202471505 U CN 202471505U
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CN
China
Prior art keywords
protective cover
protection
bolt
bracket
cover
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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
CN2012200485583U
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Chinese (zh)
Inventor
平琦
马芹永
张经双
袁璞
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Anhui University of Science and Technology
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Anhui University of Science and Technology
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Priority to CN2012200485583U priority Critical patent/CN202471505U/en
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Publication of CN202471505U publication Critical patent/CN202471505U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a protection and specimen bracket mechanism for a hopkinson pressure bar test device. The protection and specimen bracket mechanism comprises an upper protection mask and a lower protection mask which are combined face to face to form a horizontal cylindric shape. Four column shaped bracket supporting seats are arranged inside the lower protection mask, the top of each bracket supporting seat is provided with a bracket bolt and the upper portion of each bracket bolt is connected with a sample bracket. The sample bracket is in horizontal tabular shape. Four seat posts are arranged outside the lower protection mask, a downward protection mask bolt is fixedly arranged on each seat post and the lower portion of each protection mask bolt is connected with a protection mask base. The protection mask base is in a tabular shape, two installation plates are evenly arranged in the middle of the bottom of the protection mask base and a base bolt is arranged on each installation plate. When the protection and specimen bracket mechanism for the hopkinson pressure bar test device is used, two protection mask bases are respectively clamped on a beam guide rail of the split hopkinson pressure bar (SHPB) test device and the protection and specimen bracket mechanism can be connected integrally with the beam of the SHPB test device. When the SHPB impact test is carried out, the fly-out of the specimen fragments can be effectively controlled.

Description

The protection and the test specimen carriage mechanism that are used for the Hopkinson pressure bar test unit
Technical field
The utility model belongs to the test unit technical field of mechanical characteristic under the high rate of strain of test material, relates to the Hopkinson pressure bar test unit.
Background technology
Split hopkinson press bar (Split Hopkinson pressure bar is called for short SHPB) impact experiment system is the most widely-used now, and is considered to the test unit of mechanical characteristic under the high rate of strain of effective test material.Be easy to advantages such as control because that the SHPB test unit has is simple in structure, easy to operate, measuring method is ingenious, load waveform, and can survey material in high rate of strain (10 2~10 4s -1) stress-strain diagram, and this rate of strain scope also just people be concerned about that so it is a kind of experimental provision the most basic in the material kinetics.In the time of this over half a century; The SHPB experimental technique has obtained development energetically; Its range of application is more and more wider; By initial compression experiment system development to stretching and torsion test system or even pressure turn round, draw and turn round compound system, test to the improved strain rate from hanging down the rate of strain developing test; Develop into the high and low temperature test from the normal temperature experiment; The kind of its test material oneself develop into by metal nonmetal, by toughness material to hard brittle material.When utilization SHPB experimental provision carries out hard brittle material experiment such as rock; Under the depression bar high speed impact, sample is easily broken and fly out with fragment, and the safety of test relevant device and testing crew is threatened; Therefore must control the fragment that flies out of test specimen, prevent that security incident from taking place.On the other hand, sample holder for reducing the friction effect at interface, is smeared lubricant with the end of sample usually at the trial between two depression bars, and owing to reducing of interface friction force, sample moves down easily under the effect of its deadweight or comes off, and influences sample and depression bar is coaxial.
Summary of the invention
The test specimen that produces when effectively control split hopkinson press bar (SHPB) test the is impacted fragment that flies out is realized test specimen in the coaxial problem of depression bar simultaneously better, and the utility model provides a kind of test protection and test specimen bracket system.
The technical solution that realizes above-mentioned purpose is following:
The low protection cover 2 that is used for the protection of Hopkinson pressure bar test unit and last protective cover that the test specimen carriage mechanism comprises the semicircle tubular 1 and semicircle tubular, last protective cover 1 and low protection cover 2 are combined to form horizontal cylindric, and axial two ends offer the bar hole respectively; Last protective cover 1 is laid with snap close 13 respectively with low protection cover 2 apposition position outsides; Be laid with the carriage bearing 9 of four columns in the low protection cover 2; Every carriage bearing 9 tops cooperation is provided with bracket bolt 8; Every bracket bolt 8 sample holder 7 through the nut support that is fixed on the threaded rod middle part respectively; Sample holder 7 is that level is tabular, and every bracket bolt 8 is respectively equipped with the setting nut that is fixed together with threaded rod topmost; Be laid with four seat bars outside the low protection cover 2; Four seat bars are divided into two pairs, and every pair of seat bar is radially corresponding, is fixed with downward protective cover bolt 10 on the every seat bar; Cooperate on every protective cover bolt 10 to be provided with and reinforce nut 18; Through screw thread, the upper end is connected with protective cover fixed supported slab 16 every root guard cover bolt 10 of every pair of seat bar respectively, and the lower end is connecting a protective cover pedestal 12; Said protective cover pedestal 12 is a tabular, and perpendicular to low protection cover 2 axially, middle part, protective cover pedestal 12 bottom surfaces is laid with two installing plates, every installing plate is provided with foundation bolt 11.
Said upward protective cover 1 inwall and low protection cover 2 inwalls are equipped with flex foam material layer 3.
Said sample holder 7 middle parts are provided with to recessed arc groove vertically, and the leveling board of sample holder 7 is provided with carriage surface level air level 14 and carriage vertical plane air level 15.
Said protective cover fixed supported slab 16 is provided with protective cover surface level air level 17 and protective cover vertical plane air level 18.
The useful technique effect of the utility model embodies in the following areas:
The utility model can be able to effectively control split hopkinson press bar (SHPB) test the flying out of test specimen fragment when impacting, the safety of test relevant device and testing crew is guaranteed, effectively prevent the generation of security incident;
2. the sample holder of this mechanism has the support effect to sample, and the sample of smearing lubricant can not move down because of the effect of deadweight or come off, and realizes the coaxial problem between test specimen and input bar and the take-off lever better;
3. the utility model is reasonable in design, and is simple in structure, convenient installation and operation.
Description of drawings
Fig. 1 is the right section synoptic diagram of the utility model.
Fig. 2 is the side diagrammatic cross-section of the utility model.
Fig. 3 is the assembling synoptic diagram between the utility model and split hopkinson press bar test unit.
The last protective cover of sequence number among the last figure: 1-, the 2-low protection cover, 3-flexible polyurethane foam material layer, 4-imports bar, 5-sample; The 6-take-off lever, 7-sample holder, 8-bracket bolt, 9-carriage bearing; 10-protective cover bolt, 11-protective cover foundation bolt, 12-protective cover pedestal, 13-snap close; 14-carriage surface level air level, 15-carriage vertical plane air level, 16-protective cover fixed supported slab, 17-protective cover surface level air level; 18-protective cover vertical plane air level, 19-reinforces nut, 20-beam guideway, 21-crossbeam.
Embodiment
Below will combine accompanying drawing, the utility model done further detailed description through embodiment.
Embodiment
Referring to Fig. 1 and Fig. 2, be used for the low protection cover 2 of the protection of Hopkinson pressure bar test unit and last protective cover that the test specimen carriage mechanism comprises the semicircle tubular 1 and semicircle tubular, last protective cover 1 inwall and low protection cover 2 inwalls are equipped with the flex foam material layer.Last protective cover 1 and low protection cover 2 are combined to form horizontal cylindric, and axially two ends offer the bar hole respectively; Last protective cover 1 is uniformly distributed with respectively with low protection cover 2 apposition position outsides four snap closes 13 is installed, and unclamps four snap closes 13 respectively protective cover 1 is separated with low protection cover 2, can freely move protective cover 1.Be uniformly distributed with welded and installed in the low protection cover 2 the carriage bearing 9 of four columns is arranged; Every carriage bearing 9 tops cooperate is equipped with bracket bolt 8; The top of every bracket bolt 8 is respectively through the sample holder 7 that is being threaded; Sample holder 7 is that level is tabular, and the middle part is provided with to recessed arc groove vertically, and the leveling board of sample holder 7 is provided with carriage surface level air level 14 and carriage vertical plane air level 15.Be respectively equipped with setting nut on the every bracket bolt 8 of sample holder 7 bottom surfaces, regulate four bracket bolts 8, through observing carriage surface level air level 14, carriage vertical plane air level 15 is adjusted the levelness of sample holder 7, and is adjusted to proper height.Be laid with four seat bars outside the low protection cover 2, protective cover fixed supported slab 16 is provided with protective cover surface level air level 16 and protective cover vertical plane air level 17.Four seat bars are divided into two pairs; Every pair of seat bar is radially corresponding; On the every seat bar downward protective cover bolt 10 is installed, cooperates on every protective cover bolt 10 to be equipped with and reinforce nut 18, every root guard cover bolt 10 bottoms of every pair of seat bar are respectively through the protective cover pedestal 12 that is being threaded; Can be through turning four root guard cover bolts 10; Observe protective cover surface level air level 17 and protective cover vertical plane air level 18; Regulate low protection cover 2 levelnesss, and transfer to suitable height, after adjusting is accomplished; Tight a bolt respectively four and reinforce nut 19, prevent that protective cover bolt 10 is loosening in test.Protective cover pedestal 12 is a tabular, and perpendicular to low protection cover 2 axially, middle part, protective cover pedestal 12 bottom surfaces is laid with two installing plates, every installing plate is provided with foundation bolt 11.
During use; Two protective cover pedestals 12 are installed on respectively on the beam guideway 20 of split hopkinson press bar test unit; Be that beam guideway 20 is between two installing plates of protective cover pedestal 12 bottom surfaces; And fixing through the foundation bolt on the installing plate 1, realize that the low protection cover 2 and the crossbeam 21 of split hopkinson press bar test unit connect into integral body.The input bar 4 of split hopkinson press bar test unit stretches in the low protection cover 2 through the bar hole respectively with take-off lever 6, and lays respectively on the sample holder 7 in recessed arc groove.Between input bar 4 and take-off lever 6, put into the sample 5 of smearing lubricant; Import bar 4 and take-off lever 6 with pulling then, with jam-packed sample 5.Load onto protective cover 1, and will go up protective cover 1 and low protection cover 2 fastenings through four snap closes 13.
When carrying out the SHPB test subsequently and impact, the test specimen that can effectively the control generation fragment that flies out is realized test specimen and the coaxial problem of depression bar simultaneously better.

Claims (4)

1. the protection and the test specimen carriage mechanism that are used for the Hopkinson pressure bar test unit; It is characterized in that: comprise the last protective cover (1) of semicircle tubular and the low protection cover (2) of semicircle tubular; Last protective cover (1) and low protection cover (2) are combined to form horizontal cylindric, and axially two ends offer the bar hole respectively; Last protective cover (1) and low protection cover (2) apposition position outside are laid with snap close (13) respectively; Be laid with the carriage bearing (9) of four columns in the low protection cover (2); The cooperation of every carriage bearing (9) top is provided with bracket bolt (8); Every bracket bolt (8) sample holder (7) through the nut support that is fixed on the threaded rod middle part respectively; Sample holder (7) is that level is tabular, and every bracket bolt (8) is respectively equipped with the setting nut that is fixed together with threaded rod topmost; Be laid with four seat bars outside the low protection cover (2); Four seat bars are divided into two pairs, and every pair of seat bar is radially corresponding, is fixed with downward protective cover bolt (10) on the every seat bar; Every protective cover bolt (10) is gone up to cooperate to be provided with and is reinforced nut (18); Through screw thread, the upper end is connected with protective cover fixed supported slab (16) every root guard cover bolt (10) of every pair of seat bar respectively, and the lower end is connecting a protective cover pedestal (12); Said protective cover pedestal (12) is a tabular, and perpendicular to low protection cover (2) axially, middle part, protective cover pedestal (12) bottom surface is laid with two installing plates, every installing plate is provided with foundation bolt (11).
2. protection and the test specimen carriage mechanism that is used for the Hopkinson pressure bar test unit according to claim 1 is characterized in that: said upward protective cover (1) inwall and low protection cover (2) inwall are equipped with flex foam material layer (3).
3. protection and the test specimen carriage mechanism that is used for the Hopkinson pressure bar test unit according to claim 1; It is characterized in that: said sample holder (7) middle part is provided with to recessed arc groove vertically, and the leveling board of sample holder (7) is provided with carriage surface level air level (14) and carriage vertical plane air level (15).
4. protection and the test specimen carriage mechanism that is used for the Hopkinson pressure bar test unit according to claim 1 is characterized in that: said protective cover fixed supported slab (16) is provided with protective cover surface level air level (17) and protective cover vertical plane air level (18).
CN2012200485583U 2012-02-16 2012-02-16 Protection and specimen bracket mechanism for hopkinson pressure bar test device Expired - Fee Related CN202471505U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012200485583U CN202471505U (en) 2012-02-16 2012-02-16 Protection and specimen bracket mechanism for hopkinson pressure bar test device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012200485583U CN202471505U (en) 2012-02-16 2012-02-16 Protection and specimen bracket mechanism for hopkinson pressure bar test device

Publications (1)

Publication Number Publication Date
CN202471505U true CN202471505U (en) 2012-10-03

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CN2012200485583U Expired - Fee Related CN202471505U (en) 2012-02-16 2012-02-16 Protection and specimen bracket mechanism for hopkinson pressure bar test device

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103018094A (en) * 2012-12-25 2013-04-03 湖南科技大学 Device for rapid-heating quasi-static high-temperature Hopkinson pressure bar experiment
CN103278396A (en) * 2013-04-24 2013-09-04 河海大学 Test method and test apparatus for measuring dynamic bending and tensile mechanical properties of mortar
CN103471906A (en) * 2013-08-24 2013-12-25 中国人民解放军陆军军官学院 Retaining ring used for preventing rod piece from moving outwards during Hopkinson pressure bar confining pressure test
CN104198274A (en) * 2014-09-16 2014-12-10 福建江夏学院 Novel support device of split Hopkinson pressure bar and adjustment method of support device
CN105445093A (en) * 2015-12-17 2016-03-30 安徽理工大学 Gradienter for split-Hopkinson-pressure-bar splitting test piece
CN105527153A (en) * 2016-01-08 2016-04-27 西北工业大学 Hopkinson tensile/pressure bar stress wave loading platform based on electromagnetic force
CN106018021A (en) * 2016-05-16 2016-10-12 安徽理工大学 Preparation device and method for rock samples of different sizes
CN106198190A (en) * 2016-07-06 2016-12-07 合肥工业大学 A kind of Hopkinson pressure bar experiment sample collection device
CN107505189A (en) * 2017-09-30 2017-12-22 安徽理工大学 Integrated device is collected in a kind of support and protection and fragment for Hopkinson experiment
CN107655744A (en) * 2017-08-15 2018-02-02 河海大学 The explosion-proof supporting arrangement of the more size rock samples of split hopkinson bar and method
CN108776060A (en) * 2018-07-26 2018-11-09 安徽理工大学 Temperature compensation means for real-time cryogenic separation formula Hopkinson pressure bar test
CN110261242A (en) * 2019-07-12 2019-09-20 中南大学 A kind of Hopkinson bar rock sample impact test apparatus and method
CN112304785A (en) * 2020-10-26 2021-02-02 广东工业大学 Hopkinson bar device for preventing test piece from falling off
CN113092239A (en) * 2021-04-12 2021-07-09 合肥工业大学 Hopkinson pressure bar device capable of being quickly and accurately adjusted and aligned

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103018094A (en) * 2012-12-25 2013-04-03 湖南科技大学 Device for rapid-heating quasi-static high-temperature Hopkinson pressure bar experiment
CN103278396A (en) * 2013-04-24 2013-09-04 河海大学 Test method and test apparatus for measuring dynamic bending and tensile mechanical properties of mortar
CN103471906A (en) * 2013-08-24 2013-12-25 中国人民解放军陆军军官学院 Retaining ring used for preventing rod piece from moving outwards during Hopkinson pressure bar confining pressure test
CN104198274A (en) * 2014-09-16 2014-12-10 福建江夏学院 Novel support device of split Hopkinson pressure bar and adjustment method of support device
CN105445093B (en) * 2015-12-17 2017-11-07 安徽理工大学 A kind of Hopkinson pressure bar diametral compression test test specimen leveling instrument
CN105445093A (en) * 2015-12-17 2016-03-30 安徽理工大学 Gradienter for split-Hopkinson-pressure-bar splitting test piece
CN105527153B (en) * 2016-01-08 2019-02-26 西北工业大学 A kind of Hopkinson strut and tie stress-wave loading platform based on electromagnetic force
CN105527153A (en) * 2016-01-08 2016-04-27 西北工业大学 Hopkinson tensile/pressure bar stress wave loading platform based on electromagnetic force
CN106018021B (en) * 2016-05-16 2018-10-30 安徽理工大学 A kind of device for making and method for different size rock samples
CN106018021A (en) * 2016-05-16 2016-10-12 安徽理工大学 Preparation device and method for rock samples of different sizes
CN106198190A (en) * 2016-07-06 2016-12-07 合肥工业大学 A kind of Hopkinson pressure bar experiment sample collection device
CN107655744A (en) * 2017-08-15 2018-02-02 河海大学 The explosion-proof supporting arrangement of the more size rock samples of split hopkinson bar and method
CN107505189A (en) * 2017-09-30 2017-12-22 安徽理工大学 Integrated device is collected in a kind of support and protection and fragment for Hopkinson experiment
CN107505189B (en) * 2017-09-30 2020-08-11 安徽理工大学 A support and protection and fragment collect integrative device for hopkinson experiment
CN108776060A (en) * 2018-07-26 2018-11-09 安徽理工大学 Temperature compensation means for real-time cryogenic separation formula Hopkinson pressure bar test
CN110261242A (en) * 2019-07-12 2019-09-20 中南大学 A kind of Hopkinson bar rock sample impact test apparatus and method
CN110261242B (en) * 2019-07-12 2022-04-26 中南大学 Hopkinson bar rock sample impact test device and method
CN112304785A (en) * 2020-10-26 2021-02-02 广东工业大学 Hopkinson bar device for preventing test piece from falling off
CN113092239A (en) * 2021-04-12 2021-07-09 合肥工业大学 Hopkinson pressure bar device capable of being quickly and accurately adjusted and aligned

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

Granted publication date: 20121003

Termination date: 20170216