CN202869909U - Anti-secondary impact mechanism of drop hammer impact testing machine - Google Patents
Anti-secondary impact mechanism of drop hammer impact testing machine Download PDFInfo
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- CN202869909U CN202869909U CN 201220549977 CN201220549977U CN202869909U CN 202869909 U CN202869909 U CN 202869909U CN 201220549977 CN201220549977 CN 201220549977 CN 201220549977 U CN201220549977 U CN 201220549977U CN 202869909 U CN202869909 U CN 202869909U
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Abstract
The utility model discloses an anti-secondary impact mechanism of a drop hammer impact testing machine. The anti-secondary impact mechanism comprises two guiding columns, a hammer carrier and a sample base, wherein the two guiding columns are the same structure and arranged in pairs, the hammer carrier is sleeved between the two guiding columns, a hammer body is located at the right center of the hammer carrier, the two guiding columns are mounted on a foundation plate, and the sample base is used for placing the sample. The anti-secondary impact mechanism further comprises a lead screw driving mechanism used for driving the hammer carrier to lift. The anti-secondary impact mechanism is characterized in that a cone self-locking assembly is arranged on the guiding columns between the hammer carrier and the sample base. The anti-secondary impact mechanism further comprises an electromagnetic suction device used for fixing on the hammer carrier to directly absorb and release a capturing jacket. Due to the fact that a capturing mechanism is directly designed as the tapered capturing jacket and a tapered capturing frame in the scheme, the drop hammer is automatically captured by self weight of the capturing jacket and time difference of the drop hammer and the capturing jacket falling down. The anti-secondary impact mechanism overcomes problems of being difficult to grasp the time for capturing the drop hammer, and thoroughly solves secondary impact to samples.
Description
Technical field
The utility model relates to a kind of improvement of the partial structurtes on landing impact testing machine, specifically on a kind of drop hammer tester, after the bounce-back of hammer body impact test piece, be used for catching hammer to prevent the mechanism of hammer body secondary pulse test specimen.
Background technology
Landing impact testing machine is applicable to each metalloid, nonmetallic materials and various parts are carried out the falling bodies impulse test.Product quality how, not only want structure reasonable in design, formulate the aspects such as correct processing technology, processing specification, and also be very important for Material selection, must consider the principle of making the best use of everything during chosen material, just must know the performance of various metals, nonmetal, various novel high temperature alloy, macromolecular compound and compound substance.Landing impact testing machine is such a kind of experimental facilities just.The mechanical property of various materials also need be measured the impact of complete machine, selects correct material, formulates new manufacturing process according to the characteristic of part; To the parts of research and development novel mechanical product or load, all want service-test machine to detect various relative influence parameters, with the optimality of the manufacturing process of clear and definite used material and the structure of designing, selection.In a word, the use substantial connection of the testing machine of superior performance is to scientific research, national economic development, national defence level and people's living standard.
Mainly be to catch with electromagnetism or pneumatic mode to drop hammer on present drop hammer impact testing machine.Wherein, electromagnetism catch the principle of dropping hammer be with electromagnet as catching mechanism's power source, hammer body falls through behind the slide plate, electromagnet drives the hammer body of slide plate displacement after bounce-back and blocks.Its major defect is that this mode is not the strict secondary pulse of having avoided, and still exists although secondary pulse is very little.And, be difficult to the opportunity that seizure is dropped hammer hold, there is the phenomenon of slide plate collision hammer body.Pneumatic catch hammer with cylinder as catching mechanism's power source, it is similar that principle and electromagnetism are caught hammer, such as the scheme of announcing in the Chinese patent 2011203848584.Be difficult to hold opportunity except catching hammer, because the restriction of the speed of cylinder also needs to design speed increasing mechanism, the general structure more complicated.Also the someone attempts by avoiding sample to accept the device of secondary pulse, is exactly to prevent secondary pulse by the mode that increases block such as the scheme of announcing in the Chinese patent 2009100542733, and this structure also needs to be equipped with the power source of electromagnetism or cylinder.
The utility model content
The purpose of this utility model is exactly for the existing deficiency of prior art, and provides a kind of drop hammer impact testing machine to catch the hammer technical scheme, and it is simple that this scheme not only has mechanism structure, and it does not need the additionaling power source, does not also need to catch the hammer control signal.This scheme utilization catch the cover deadweight and drop hammer, catch the cover fall time poor overcome to catch opportunity by the forelock; take time by the forelock be difficult to hold a difficult problem that is difficult to separate with hammer body and orienting sleeve.Realized fast, accurately catching hammer, so guaranteed reliability and the accuracy of drop hammer tester test.
The technical scheme in the invention for solving the technical problem is: the anti-secondary pulse of a kind of drop hammer impact testing machine mechanism, comprise and have same structure and guide upright post arranged in pairs, be nested with the hammer carrier between two guide upright posts, hammer body is positioned at the centre of hammer carrier, described guide upright post is arranged on grade slab, under described hammer body, also be provided with one be used to placing the specimen mount of sample, described guide upright post passes specimen mount, also comprise that a leading screw driving mechanism drives hammer carrier and rises, it is characterized in that
Guide upright post between described hammer carrier and specimen mount is provided with circular cone self-locking combination body, described circular cone self-locking combination body is comprised of orienting sleeve, seizure cover and trap-frame at least, described orienting sleeve is fixed on hammer carrier and is nested with on guide upright post, and described orienting sleeve lateral surface carries out circular conical surface with seizure cover medial surface and cooperates, can change catching cover easily, described trap-frame is fixed on the specimen mount, and described seizure cover lateral surface carries out circular conical surface with the trap-frame medial surface and cooperates; Be provided with the jacking system that upper seizure cover is separated from lower trap-frame jack-up at described specimen mount downside; Also comprise an electromagnetic attracting device, described electromagnetic attracting device is used for being fixed on and is used for direct adhesive on the hammer carrier and discharges the seizure cover.
Described jacking system comprises ejection ring and cylinder, is nested with an ejection ring at the guide upright post of the downside of described specimen mount, and described ejection ring is connected with the downside cylinder and moves up and down under the effect of cylinder and can separate in trap-frame catching cover.
The beneficial effect of this programme can be learnt according to the narration of such scheme, owing in this scheme, directly will catch seizure cover that mechanism design is taper and the trap-frame of taper, utilize to catch the own wt of cover and drop hammer with to catch the cover fall time poor, carry out automatic capturing and drop hammer.Therefore, it does not need the additionaling power source, does not need to arrange the control signal that seizure is dropped hammer yet.It has overcome and has caught a difficult problem that is difficult to grasp the opportunity of dropping hammer.Thoroughly solved the secondary pulse to sample.Improve the test accuracy of drop hammer type shock test equipment, greatly reduced the cost of making testing machine.Liftout attachment is housed in guide upright post bottom, this just can solve drop hammer be captured after, be stuck in the problem that the trap-frame the inside is difficult to separate, at this moment, starting cylinder can and catch orienting sleeve overlap and eject trap-frame and test next time.Simultaneously, at the hammer carrier two ends electromagnetism attracting device is housed, is used for automatic lifting and catches to overlap to corresponding height and assurance and drop hammer and catch cover and discharge simultaneously.This shows that the utility model compared with prior art has substantial characteristics and progress, the beneficial effect of its enforcement.Make equipment in gordian technique new breakthrough arranged.
Description of drawings
Fig. 1 is testing machine one-piece construction synoptic diagram;
Fig. 2 is local full sectional view of the present utility model;
Among the figure: 1 frame, 2 tups, 3 hammer carriers, 4 leading screw driving mechanisms, 5 specimen mount, 6 guide upright posts, 7 orienting sleeves, 8 catch cover, 9 trap-frames, 10 jacking systems, 11 ejection rings, 12 cylinders, 13 transition pieces, 14 electromagnetic attracting devices, 15 grade slabs.
Embodiment
As shown in Figure 1 and Figure 2,
For clearly demonstrating the technical characterstic of this programme, below by an embodiment, and in conjunction with its accompanying drawing, this programme is set forth.
The landing impact testing machine of this programme is prevented secondary pulse mechanism, it is the improvement of carrying out on the basis of existing testing machine, frame 1 wherein, tup 2, hammer carrier 3, leading screw driving mechanism 4, specimen mount 5, guide rod column 6 etc. all are prior aries, and improvements are:
Guide upright post between hammer carrier and specimen mount is provided with circular cone self-locking combination body, circular cone self-locking combination body is comprised of orienting sleeve 7, seizure cover 8 and trap-frame 9 at least, orienting sleeve 7 is fixed on hammer carrier 3 and is nested with on guide upright post 6, can carry out synchronous elevating movement along with hammer carrier.Orienting sleeve 7 lateral surfaces carry out circular conical surface with seizure cover 8 medial surfaces and cooperate, and both separation in the time of can realizing impacting (seeing following process prescription for details) also can be changed the seizure cover in the situation that catches the cover distortion easily.Trap-frame 9 uses screws to be fixed on the specimen mount 5, and catches the cover lateral surface and carry out circular conical surface with the trap-frame medial surface and cooperates, and the cooperation of formation wedge shape plays to tighten to get acting on.Specimen mount 5 downsides are provided with the jacking system 10 that upper seizure cover is separated from lower trap-frame jack-up, being used for catching cover ejects, this jacking system comprises ejection ring 11 and cylinder 12, guide upright post at the downside of specimen mount is nested with an ejection ring 11, ejection ring is connected with the downside cylinder and moves up and down under the effect of cylinder and can separate in trap-frame catching cover, as shown in the figure, cylinder 12 can arrange a plurality of, be installed on the grade slab 15, realize assembling by middle transition part 13, eject smoothly.
Also comprise an electromagnetic attracting device 14, electromagnetic attracting device is used for being fixed on and is used for direct adhesive on the hammer carrier and discharges the seizure cover, and effect is a switch, is used for the carrying out of auxiliary dispose procedure.
Traditional landing impact testing machine one-shot process of the test following (before the improvement): install test sample, set the test parameterss such as shock height, the starting characteristics test machine is carried the hammer crossbeam and is fallen, the leading screw counter-rotating, tup rises, tup arrives the precalculated position, discharges tup and hammer carrier, the tup impact specimen, the automatic capturing tup, the check test sample.
This programme automatic capturing process of dropping hammer is as follows: when tup and hammer carrier promote, start electromagnetic attracting device 14, drive to catch and overlap the lofty perch (A point) that rises simultaneously, disconnect electromagnetic attracting device when discharging tup and hammer carrier, when treating impact specimen, tup collides first sample (B point), then tup bounce-back, hammer body bounce-back speed inevitable less than
Catching cover this moment separates with orienting sleeve, catch cover and continue to fall, then catch the cover lower end and begin to enter in the trap-frame, catch hammer action beginning, be clamped in orienting sleeve and guide upright post until taper catches cover, last whole hammer body (circular cone self-locking combination body) is stuck in (C point) on the trap-frame.When proceeding to test, hammer body has been captured and has overlapped chucking, at this moment, starts the bottomed cylinder jacking system, can promote orienting sleeve and overlap with seizure.And then be promoted to desired height and test next time.
Except the described technical characterictic of instructions, be the known technology of those skilled in the art.
Claims (2)
1. a drop hammer impact testing machine is prevented secondary pulse mechanism, comprise and have same structure and guide upright post arranged in pairs, be nested with the hammer carrier between two guide upright posts, hammer body is positioned at the centre of hammer carrier, and described guide upright post is installed on the grade slab, also is provided with a specimen mount that is used for placing sample under described hammer body, described guide upright post passes specimen mount, comprise that also a leading screw driving mechanism drives hammer carrier and rises, it is characterized in that
Guide upright post between described hammer carrier and specimen mount is provided with circular cone self-locking combination body, described circular cone self-locking combination body is comprised of orienting sleeve, seizure cover and trap-frame at least, described orienting sleeve is fixed on hammer carrier and is nested with on guide upright post, and described orienting sleeve lateral surface carries out circular conical surface with seizure cover medial surface and cooperates, can change catching cover easily, described trap-frame is fixed on the specimen mount, and described seizure cover lateral surface carries out circular conical surface with the trap-frame medial surface and cooperates; Be provided with the jacking system that upper seizure cover is separated from lower trap-frame jack-up at described specimen mount downside; Also comprise an electromagnetic attracting device, described electromagnetic attracting device is used for being fixed on and is used for direct adhesive on the hammer carrier and discharges the seizure cover.
2. a kind of drop hammer impact testing machine according to claim 1 is prevented secondary pulse mechanism, it is characterized in that, described jacking system comprises ejection ring and cylinder, guide upright post at the downside of described specimen mount is nested with an ejection ring, and described ejection ring is connected with the downside cylinder and moves up and down under the effect of cylinder and can separate in trap-frame catching cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201220549977 CN202869909U (en) | 2012-10-25 | 2012-10-25 | Anti-secondary impact mechanism of drop hammer impact testing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220549977 CN202869909U (en) | 2012-10-25 | 2012-10-25 | Anti-secondary impact mechanism of drop hammer impact testing machine |
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| CN202869909U true CN202869909U (en) | 2013-04-10 |
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| CN 201220549977 Expired - Fee Related CN202869909U (en) | 2012-10-25 | 2012-10-25 | Anti-secondary impact mechanism of drop hammer impact testing machine |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969016A (en) * | 2014-04-12 | 2014-08-06 | 北京工业大学 | Drop test table |
| 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 |
| CN105259056A (en) * | 2015-11-02 | 2016-01-20 | 山东科技大学 | Device for exerting transient pressure relief stress waves in large-scale similar experiment system |
| CN105784510A (en) * | 2016-04-21 | 2016-07-20 | 安徽农业大学 | Falling weight type nut mechanical characteristic parameter testing experiment table |
| CN105842088A (en) * | 2016-04-27 | 2016-08-10 | 膳魔师（江苏）家庭制品有限公司 | Vertical impact tester |
| CN106052927A (en) * | 2016-06-16 | 2016-10-26 | 塔里木大学 | Ram-type walnut crushing force detection device |
| CN106290014A (en) * | 2016-07-22 | 2017-01-04 | 西安交通大学 | A kind of drop weight test system anti-secondary impact device |
| CN107328544A (en) * | 2017-08-28 | 2017-11-07 | 北京沃华慧通测控技术有限公司 | Anti- secondary pulse device and impact test equipment |
| CN108760537A (en) * | 2018-05-27 | 2018-11-06 | 山西大学 | A kind of large size drop impact device |
| SE1751589A1 (en) * | 2017-12-20 | 2019-04-23 | Kth Holding Ab | Impact testing apparatus |
| CN109781552A (en) * | 2019-03-01 | 2019-05-21 | 中国飞机强度研究所 | Multiple degrees of freedom impact test apparatus for Composite Panels test |
| CN110333176A (en) * | 2019-08-02 | 2019-10-15 | 柳州汉西鸣建材发展有限公司 | A kind of device and its measurement method of flux controllable measurement acoustics flow resistance |
| CN111751073A (en) * | 2020-06-30 | 2020-10-09 | 苏州苏试试验集团股份有限公司 | Control device and control method of pneumatic collision test bed |
-
2012
- 2012-10-25 CN CN 201220549977 patent/CN202869909U/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969016A (en) * | 2014-04-12 | 2014-08-06 | 北京工业大学 | Drop test table |
| CN103969016B (en) * | 2014-04-12 | 2017-02-08 | 北京工业大学 | Drop test table |
| 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 |
| 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 |
| CN105259056A (en) * | 2015-11-02 | 2016-01-20 | 山东科技大学 | Device for exerting transient pressure relief stress waves in large-scale similar experiment system |
| CN105259056B (en) * | 2015-11-02 | 2018-05-08 | 山东科技大学 | Apply the device that transient state unloads compression stress wave in a kind of large-scale similar experiment system |
| CN105259022B (en) * | 2015-11-02 | 2017-12-01 | 山东科技大学 | One kind prevents the secondary impact device that drops hammer |
| CN105784510A (en) * | 2016-04-21 | 2016-07-20 | 安徽农业大学 | Falling weight type nut mechanical characteristic parameter testing experiment table |
| CN105842088B (en) * | 2016-04-27 | 2018-12-04 | 膳魔师（江苏）家庭制品有限公司 | A kind of vertical impact testing machine |
| CN105842088A (en) * | 2016-04-27 | 2016-08-10 | 膳魔师（江苏）家庭制品有限公司 | Vertical impact tester |
| CN106052927A (en) * | 2016-06-16 | 2016-10-26 | 塔里木大学 | Ram-type walnut crushing force detection device |
| CN106290014B (en) * | 2016-07-22 | 2017-07-25 | 西安交通大学 | A kind of anti-secondary impact device of drop weight test system |
| CN106290014A (en) * | 2016-07-22 | 2017-01-04 | 西安交通大学 | A kind of drop weight test system anti-secondary impact device |
| CN107328544A (en) * | 2017-08-28 | 2017-11-07 | 北京沃华慧通测控技术有限公司 | Anti- secondary pulse device and impact test equipment |
| SE1751589A1 (en) * | 2017-12-20 | 2019-04-23 | Kth Holding Ab | Impact testing apparatus |
| SE541190C2 (en) * | 2017-12-20 | 2019-04-23 | Kth Holding Ab | Impact testing apparatus |
| CN108760537A (en) * | 2018-05-27 | 2018-11-06 | 山西大学 | A kind of large size drop impact device |
| CN109781552A (en) * | 2019-03-01 | 2019-05-21 | 中国飞机强度研究所 | Multiple degrees of freedom impact test apparatus for Composite Panels test |
| CN110333176A (en) * | 2019-08-02 | 2019-10-15 | 柳州汉西鸣建材发展有限公司 | A kind of device and its measurement method of flux controllable measurement acoustics flow resistance |
| CN111751073A (en) * | 2020-06-30 | 2020-10-09 | 苏州苏试试验集团股份有限公司 | Control device and control method of pneumatic collision test bed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20141025 |
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| EXPY | Termination of patent right or utility model |