CN102393336A - Portable type low-velocity impact testing machine - Google Patents
Portable type low-velocity impact testing machine Download PDFInfo
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- CN102393336A CN102393336A CN2011102407019A CN201110240701A CN102393336A CN 102393336 A CN102393336 A CN 102393336A CN 2011102407019 A CN2011102407019 A CN 2011102407019A CN 201110240701 A CN201110240701 A CN 201110240701A CN 102393336 A CN102393336 A CN 102393336A
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- impact
- secondary pulse
- testing machine
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- low velocity
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Abstract
The invention relates to a portable type low-velocity impact testing machine in the technical field of impact testing machine erecting equipment. The portable type low-velocity impact testing machine comprises a supporting device, a weight drop impact measuring assembly and a secondary-impact-preventing device, wherein the weight drop impact measuring assembly is arranged in the supporting device and is connected with the supporting device, and the secondary-impact-preventing device is connected with the supporting device. Compared with the prior art, the portable type low-velocity impact testing machine provided by the invention requires no external energy input, has simple overall structure, is convenient to move, is applicable to low-velocity impact test on a large-scale structure and can realize real-time acquisition on test data in an impact process.
Description
Technical field
What the present invention relates to is a kind of device of impact testing machine technical field, specifically is a kind of portable low velocity impact testing machine.
Background technology
The composite layer laminated structure is widely used in the aeronautic structure; But very responsive for shock load; Be very easy to produce fibre breakage, layering and MATRIX CRACKING equivalent damage, thereby reduce structure bearing capacity greatly, in the aeronautic structure engineering; Need carry out a large amount of containing the test job of damage composite structure load-carrying properties, thereby it is prefabricated to carry out corresponding impact injury.
" experimental study of composite material laminated board shock resistance behavior and characterizing method " (" compound substance journal " of Shen Zhen, Yang Shengchun, Chen Puhui work; 25 (5): 125-133) adopt desk-top material impact testing machine; For large-scale composite structure; Usually owing to will be in process of the test reasons such as prefabricated damage or testpieces size be bigger, inconvenience uses desk-top material impact testing machine to damage prefabricated to the optional position of structure.
Summary of the invention
The object of the invention be exactly provide a kind of in order to overcome the defective that above-mentioned prior art exists and need not the external energy input, one-piece construction is simple and be convenient to move; Be applicable to the low velocity impact test of large-sized structural parts, realize the portable low velocity impact testing machine of the real-time collection of test figure in the impact process.
The object of the invention can be realized through following technical scheme: a kind of portable low velocity impact testing machine; It is characterized in that; Comprise: supportive device, drop-weight impact are measured assembly and anti-secondary pulse device; Wherein: drop-weight impact measurement assembly is arranged in the supportive device and with supportive device and is connected, and anti-secondary pulse device is connected with supportive device.
Described supportive device comprises: guide and leg, and wherein: guide is fixedly connected with leg, and the bottom of guide is connected with anti-secondary pulse device, and guide is measured assembly with drop-weight impact and is connected.
Described drop-weight impact is measured assembly and is comprised: the whereabouts switch, drop hammer, impact force measurements device and impact head, wherein: the whereabouts switch, drop hammer, impact force measurements device and impact head be connected in series successively, the whereabouts switch is fixedly connected with supportive device.
Said whereabouts switch comprises: clip, hammer pin and support, and wherein: clip is fixedly connected with supportive device, support and clamp connection, the hammer pin is inserted in the support, and the hammer pin contacts with the face of dropping hammer.
Described impact force measurements device comprises: force transducer and sensor connector, and wherein: force transducer is connected with impact head with sensor connector respectively, and sensor connector is connected with dropping hammer.
Described anti-secondary pulse device comprises: web member, anti-secondary pulse trigger, anti-secondary pulse latch hook and spring; Wherein: web member is fixedly connected with supportive device, and web member flexibly connects with anti-secondary pulse trigger and anti-secondary pulse latch hook respectively, and spring is fixedly connected with web member; When dropping hammer; Anti-secondary pulse latch hook contacts with spring, and before dropping hammer, anti-secondary pulse trigger contacts with anti-secondary pulse latch hook.
Described anti-secondary pulse trigger is provided with rod member; Described anti-secondary pulse latch hook is provided with groove.
Described rod member and groove are suitable, before dropping hammer, and rod member and grooves contact, when dropping hammer, rod member does not contact with groove.
Before dropping hammer, the rod member on the anti-secondary pulse trigger will fall into the groove of anti-secondary pulse latch hook, stop anti-secondary pulse latch hook mobile to dropping hammer; When dropping hammer, after anti-secondary pulse trigger was dropped hammer and triggers, the rod member of anti-secondary pulse trigger shifted out the groove of anti-secondary pulse latch hook; Thereby anti-secondary pulse latch hook moves to the guide center; After the bounce-back of dropping hammer, anti-secondary pulse latch hook blocks the whereabouts route that drops hammer, and has prevented secondary pulse.
Compared with prior art, anti-secondary pulse device of the present invention need not external energy input, one-piece construction is simple and be convenient to move, and is applicable to the low velocity impact test of large-sized structural parts.
Of the present invention dropping hammer moves downward along guide; The height of adjustment whereabouts switch can be adjusted impact energy; The present invention utilizes impact head freely to fall from differing heights is vertical, and impact is positioned at the test specimen under it, to reach the purpose of prefabricated impact injury and research impact injury process.When impact head contact test part, force transducer can measure impact head and drop hammer between the size of power.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the local enlarged diagram of anti-secondary pulse trigger and anti-secondary pulse latch hook;
Fig. 3 is anti-secondary pulse device work synoptic diagram, and wherein: figure (a) is state before dropping hammer; Figure (b) triggers anti-secondary pulse trigger for dropping hammer; Figure (c) is the resilience of dropping hammer, and anti-secondary pulse latch hook gets into guide, blocks the whereabouts route that drops hammer; Figure (d) is the whereabouts of dropping hammer, and is prevented the interception of secondary pulse latch hook;
Fig. 4 is whereabouts on-off principle figure.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is elaborated.
Embodiment
As shown in Figure 1; The portable low velocity impact testing machine of present embodiment comprises: supportive device 1, drop-weight impact are measured assembly 2 and anti-secondary pulse device 3; Wherein: drop-weight impact measurement assembly 2 is arranged in the supportive device 1 and with supportive device 1 and is connected, and anti-secondary pulse device 3 is connected with supportive device 1.
Described supportive device 1 comprises: guide 4 and leg 5, and wherein: guide 4 is fixedly connected with leg 5, and the bottom of guide 4 is connected with anti-secondary pulse device 3, and guide 4 is measured assembly 2 with drop-weight impact and is connected.
Described drop-weight impact is measured assembly 2 and is comprised: whereabouts switch 6, drop hammer 7, impact force measurements device 8 and impact head 9; Wherein: whereabouts switch 6, drop hammer 7, impact force measurements device 8 and impact head 9 be connected in series successively, whereabouts switch 6 is fixedly connected with the guide 4 of supportive device 1.
As shown in Figure 4, said whereabouts switch 6 comprises: clip 10, hammer pin 11 and support 12, and wherein: clip 10 is fixedly connected with guide 4, and support 12 is connected with clip 10, hammers into shape to sell 11 and be inserted in the support 12, hammers into shape to sell 11 and contact with dropping hammer 7.Shown in rod member 21 is arranged on dropping hammer, hammer pin 11 contacts with rod member 21.
Described impact force measurements device 8 comprises: force transducer 13 and sensor connector 14, and wherein: force transducer 13 is connected with impact head 9 with sensor connector 14 respectively, and sensor connector 14 7 is connected with dropping hammer.Force transducer 13 can be realized the real-time collection of test figure in the impact process.
Described anti-secondary pulse device 3 comprises: web member 15, anti-secondary pulse trigger 16, anti-secondary pulse latch hook 17 and spring 18; Wherein: web member 15 is fixedly connected with the guide 4 of supportive device 1; Web member 15 flexibly connects with anti-secondary pulse trigger 16 and anti-secondary pulse latch hook 17 respectively; Spring 18 is fixedly connected with web member 15, and when dropping hammer 7 whereabouts, anti-secondary pulse latch hook 17 contacts with spring 18; Before 7 whereabouts of dropping hammer, anti-secondary pulse trigger 16 contacts with anti-secondary pulse latch hook 17.
As shown in Figure 2, described anti-secondary pulse trigger 16 is provided with rod member 19.
Described anti-secondary pulse latch hook 17 is provided with groove 20.
Described rod member 19 is suitable with groove 20, and before 7 whereabouts of dropping hammer, rod member 19 contacts with groove 20, and when dropping hammer 7 whereabouts, rod member 19 does not contact with groove 20.
The implementation process of this device is: as shown in Figure 1, promote drop hammer 7 to the whereabouts switch 6 places obtain to impact institute's energy requirement, shown in Fig. 3 a, anti-secondary pulse trigger 16 will be prevented 17 lockings of secondary pulse latch hook, rod member 19 inserts locking in the grooves 20;
Unclamp whereabouts switch 6, hammer pin 11 does not contact with rod member 21, and 7 beginnings of dropping hammer are along guide 4 whereabouts; Shown in Fig. 3 b, anti-secondary pulse trigger 16 is triggered in 7 whereabouts of dropping hammer, and anti-secondary pulse trigger 16 discharges prevents secondary pulse latch hook 17; Rod member 19 is deviate from release from groove 20; Anti-secondary pulse latch hook 17 is to guide 4 intermediary movementses, with drop hammer 7 contact after, stop motion temporarily;
Behind the impact head 9 contact test specimens, bounce-back, during force transducer 13 measure and impact contact forces, shown in Fig. 3 c, anti-secondary pulse latch hook 17 continues to block the 7 whereabouts routes that drop hammer to guide 4 central motions;
Shown in Fig. 3 d, after finishing, 7 bounce-backs of dropping hammer fall to anti-secondary pulse latch hook 17 positions, prevented that secondary pulse latch hook 17 blocks, an impulse test process finishes.
Claims (8)
1. portable low velocity impact testing machine; It is characterized in that; Comprise: supportive device, drop-weight impact are measured assembly and anti-secondary pulse device, and wherein: drop-weight impact measurement assembly is arranged in the supportive device and with supportive device and is connected, and anti-secondary pulse device is connected with supportive device.
2. portable low velocity impact testing machine according to claim 1; It is characterized in that described supportive device comprises: guide and leg, wherein: guide is fixedly connected with leg; The bottom of guide is connected with anti-secondary pulse device, and guide is measured assembly with drop-weight impact and is connected.
3. portable low velocity impact testing machine according to claim 1; It is characterized in that; Described drop-weight impact is measured assembly and is comprised: the whereabouts switch, drop hammer, impact force measurements device and impact head; Wherein: the whereabouts switch, drop hammer, impact force measurements device and impact head be connected in series successively, the whereabouts switch is fixedly connected with supportive device.
4. portable low velocity impact testing machine according to claim 3 is characterized in that, said whereabouts switch comprises: clip, hammer pin and support; Wherein: clip is fixedly connected with supportive device; Support and clamp connection, the hammer pin is inserted in the support, and the hammer pin contacts with the face of dropping hammer.
5. portable low velocity impact testing machine according to claim 3; It is characterized in that; Described impact force measurements device comprises: force transducer and sensor connector, and wherein: force transducer is connected with impact head with sensor connector respectively, and sensor connector is connected with dropping hammer.
6. portable low velocity impact testing machine according to claim 1; It is characterized in that described anti-secondary pulse device comprises: web member, anti-secondary pulse trigger, anti-secondary pulse latch hook and spring, wherein: web member is fixedly connected with supportive device; Web member flexibly connects with anti-secondary pulse trigger and anti-secondary pulse latch hook respectively; Spring is fixedly connected with web member, and when dropping hammer, anti-secondary pulse latch hook contacts with spring; Before dropping hammer, anti-secondary pulse trigger contacts with anti-secondary pulse latch hook.
7. portable low velocity impact testing machine according to claim 6 is characterized in that, described anti-secondary pulse trigger is provided with rod member; Described anti-secondary pulse latch hook is provided with groove.
8. portable low velocity impact testing machine according to claim 7 is characterized in that described rod member and groove are suitable, before dropping hammer, and rod member and grooves contact, when dropping hammer, rod member does not contact with groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110240701 CN102393336B (en) | 2011-08-21 | 2011-08-21 | Portable type low-velocity impact testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110240701 CN102393336B (en) | 2011-08-21 | 2011-08-21 | Portable type low-velocity impact testing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102393336A true CN102393336A (en) | 2012-03-28 |
| CN102393336B CN102393336B (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110240701 Expired - Fee Related CN102393336B (en) | 2011-08-21 | 2011-08-21 | Portable type low-velocity impact testing machine |
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| Country | Link |
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| CN (1) | CN102393336B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458452A (en) * | 2014-11-21 | 2015-03-25 | 清华大学苏州汽车研究院（相城） | Compression and relaxation testing device |
| CN105259022A (en) * | 2015-11-02 | 2016-01-20 | 山东科技大学 | Falling hammer secondary collision prevention device |
| CN110987671A (en) * | 2019-12-04 | 2020-04-10 | 北京交通大学 | Device for applying impact excitation inside soil layer of laboratory sand box |
| CN112525732A (en) * | 2020-11-11 | 2021-03-19 | 中国人民解放军军事科学院国防工程研究院 | Mechanical application method and device for vertically and uniformly distributing explosive loads |
| CN114486490A (en) * | 2022-01-20 | 2022-05-13 | 哈尔滨工程大学 | Device for preventing secondary impact of drop hammer in drop hammer impact experiment |
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| CN2837824Y (en) * | 2005-07-26 | 2006-11-15 | 比亚迪股份有限公司 | Impact testing apparatus |
| JP3871039B2 (en) * | 2002-05-27 | 2007-01-24 | 日本電気株式会社 | Drop impact tester and drop impact test method |
| CN201034892Y (en) * | 2007-04-28 | 2008-03-12 | 武汉钢铁(集团)公司 | NDT falling weight impact test machine |
| CN201212869Y (en) * | 2008-07-08 | 2009-03-25 | 哈尔滨飞机工业集团有限责任公司 | Impact test device |
| CN201464286U (en) * | 2009-06-30 | 2010-05-12 | 上海华龙测试仪器有限公司 | Second hit preventing device of drop hammer impact testing machine |
-
2011
- 2011-08-21 CN CN 201110240701 patent/CN102393336B/en not_active Expired - Fee Related
Patent Citations (5)
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| JP3871039B2 (en) * | 2002-05-27 | 2007-01-24 | 日本電気株式会社 | Drop impact tester and drop impact test method |
| CN2837824Y (en) * | 2005-07-26 | 2006-11-15 | 比亚迪股份有限公司 | Impact testing apparatus |
| CN201034892Y (en) * | 2007-04-28 | 2008-03-12 | 武汉钢铁(集团)公司 | NDT falling weight impact test machine |
| CN201212869Y (en) * | 2008-07-08 | 2009-03-25 | 哈尔滨飞机工业集团有限责任公司 | Impact test device |
| CN201464286U (en) * | 2009-06-30 | 2010-05-12 | 上海华龙测试仪器有限公司 | Second hit preventing device of drop hammer impact testing machine |
Non-Patent Citations (1)
| Title |
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| 毛铸 等: "落锤式冲击实验系统的设计开发", 《实验技术与管理》, vol. 20, no. 5, 31 October 2003 (2003-10-31) * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458452A (en) * | 2014-11-21 | 2015-03-25 | 清华大学苏州汽车研究院（相城） | Compression and relaxation testing device |
| CN104458452B (en) * | 2014-11-21 | 2017-07-07 | 清华大学苏州汽车研究院（相城） | A kind of compression stress relaxation experimental rig |
| CN105259022A (en) * | 2015-11-02 | 2016-01-20 | 山东科技大学 | Falling hammer secondary collision prevention device |
| CN105259022B (en) * | 2015-11-02 | 2017-12-01 | 山东科技大学 | One kind prevents the secondary impact device that drops hammer |
| CN110987671A (en) * | 2019-12-04 | 2020-04-10 | 北京交通大学 | Device for applying impact excitation inside soil layer of laboratory sand box |
| CN112525732A (en) * | 2020-11-11 | 2021-03-19 | 中国人民解放军军事科学院国防工程研究院 | Mechanical application method and device for vertically and uniformly distributing explosive loads |
| CN114486490A (en) * | 2022-01-20 | 2022-05-13 | 哈尔滨工程大学 | Device for preventing secondary impact of drop hammer in drop hammer impact experiment |
| CN114486490B (en) * | 2022-01-20 | 2024-04-09 | 哈尔滨工程大学 | Device for preventing secondary impact of drop hammer in drop hammer impact experiment |
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| Publication number | Publication date |
|---|---|
| CN102393336B (en) | 2013-04-03 |
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Granted publication date: 20130403 Termination date: 20210821 |