CN105387987A - Manual high-frequency mechanical impact test apparatus - Google Patents
Manual high-frequency mechanical impact test apparatus Download PDFInfo
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- CN105387987A CN105387987A CN201510916560.6A CN201510916560A CN105387987A CN 105387987 A CN105387987 A CN 105387987A CN 201510916560 A CN201510916560 A CN 201510916560A CN 105387987 A CN105387987 A CN 105387987A
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- ram hammer
- impact test
- strain gauge
- agent structure
- pressure sensor
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Abstract
The invention discloses a manual high-frequency mechanical impact test apparatus. The manual high-frequency mechanical impact test apparatus comprises a base, guide columns, a driving device, an impact hammer and a cushion plate; the impact hammer sleeves the guide columns and is suspended on a cross beam; a sample is arranged on the cushion plate; the driving device drives the impact hammer; the manual high-frequency mechanical shock test apparatus further comprises a strain gauge pressure sensor, a data acquisition card and a computer; the impact hammer includes a main body structure and a hammer head; the tail end of the hammer head is connected with a segment of elastic rubber; the strain gauge pressure sensor is arranged between the hammer head and the elastic rubber; the front end of the elastic rubber is connected with a cover plate; the strain gauge pressure sensor is electrically connected with the data acquisition card; the data acquisition card acquires pressure electric signals detected by the strain gauge sensor and transmits acquired data to the computer; and the computer is provided with a software platform matched with the data acquisition card and can display the acquired data. With the manual high-frequency mechanical impact test apparatus of the invention adopted, impact pressure in a test process can be accurately obtained, and test accuracy can be improved.
Description
Technical field
The present invention relates to physical shock technical field, particularly relate to a kind of can surge pressure in Obtaining Accurate test process, improve the artificial high frequency machinery impact test equipment of test accuracy.
Background technology
Mechanical shock test's test objective determines when product is subject to a series of impact, whether each performance lost efficacy under normal and ultimate temperature.
The technical indicator of impulse test comprises: peak accelerator, duration of pulse, velocity variable (half-sine wave, Final Peak Saw-Tooth Shock, trapezoidal wave) and waveform selection.Number of shocks has no special requirements outer each and impacts 3 times totally 18 times.
Many products all can be impacted in use, handling, transportation.The magnitude variations of impacting is very large and have complicated character.Therefore impact and collide the weak link that reliability testing is applicable to determine machinery, the integrality of examination product structure.
The technical indicator of mechanical shock test comprises: peak accelerator, duration of pulse, velocity variable (half-sine wave), every direction collision frequency.
Note impacting and the direction of collision should be 6 faces, instead of X, Y, Z tri-direction.In environmental test, vibration, impact and collision have common point: these three kinds tests are all can as the effective measuring means of one to the laser intensity of product own.But vibration test is particular about continuation, fatigability.All operationally a long-term process as the element of product in transportation or some engines.Impulse test is instantaneous, destructive.The fall-down test one of also impacting at last in theory, general impact testing machine is fixed on platform by article, and then risen by platform, utilize acceleration of gravity to impact, surge waveform has half-sine wave, trapezoidal wave, triangular wave.The impact that impact test can regard repeatability as adds up.But impact test generally utilizes object kinetic energy to test, impact test has plane, also bevelled.
Mechanical shock test's equipment of currently available technology is all that function ratio is more single, and the experimental facilities of single-impact, then do not possess higher-order of oscillation impact function, and in impulse test process, and the various parameters in more detailed process of the test can not be obtained.
Therefore, need badly a kind of can surge pressure in Obtaining Accurate test process, improve the artificial high frequency machinery impact test equipment of test accuracy.
Summary of the invention
The object of this invention is to provide a kind of can surge pressure in Obtaining Accurate test process, improve the artificial high frequency machinery impact test equipment of test accuracy.
To achieve these goals, technical scheme provided by the invention is: provide a kind of artificial high frequency machinery impact test equipment, comprise: base, guide pillar, drive unit, ram hammer, backing plate, described base is horizontally disposed with and described guide pillar fixedly stands on described base, and described guide pillar upper end is also provided with crossbeam, described ram hammer is sheathed on described guide pillar and hangs on described crossbeam, described backing plate is located at described base upper surface and is positioned at below described ram hammer, sample is placed on described backing plate, described drive unit can drive described ram hammer promote on described guide pillar or decline, also comprise strain gauge pressure sensor, data collecting card and computing machine, the tup that described ram hammer comprises agent structure and is connected to separatably below described agent structure, described tup end is connected with one section of elastic caoutchouc, and described strain gauge pressure sensor is located between described tup and described elastic caoutchouc, and described elastic caoutchouc front end is also connected with cover plate, when described ram hammer impacts to sample, described elastic caoutchouc produces deformation, described strain gauge pressure sensor detects the pressure suffered by described ram hammer, and described strain gauge pressure sensor and described data collecting card are electrically connected, electric pressure signal detected by described strain gauge pressure sensor gathers by described data collecting card, and image data is passed to described computing machine, described computing machine is provided with the matching used software platform of described data collecting card and can shows image data.
Described drive unit comprises hydraulic pump, high-pressure oil pipe and hydraulic cylinder, and described hydraulic pump is connected with described hydraulic cylinder by described high-pressure oil pipe.
The columniform described tup that described ram hammer comprises the described agent structure in inverted trapezoidal shape and is connected to separatably below described agent structure, and described tup and described agent structure are threaded connection integral.
Also be provided with upper cover plate above described guide pillar, the space between described upper cover plate and described agent structure is also provided with spring, and described spring one end is fixedly connected with described upper cover plate, and the described spring other end is connected separatably with the upper surface of described agent structure.
Also comprise the butt hook of some band studs, butt hook one end of described band stud is stud, the other end is hook structure, described agent structure upper surface is provided with some threaded holes be circumferentially evenly arranged, described stud is connected with described threaded hole threaded engagement, and described hook structure then hooks the lower end of described spring.
The rectangular shape of described backing plate and being carried on described base, and four drift angle places are provided with the set bolt for preventing described backing plate from offseting.
Described base is also provided with the photoelectric sensor for detecting described ram hammer level height, described photoelectric sensor and described controller are electrically connected, and described controller controls the height of described ram hammer according to the signal that described photoelectric sensor feeds back.
Compared with prior art, in mechanical shock test of the present invention equipment, described tup front end is connected with one section of elastic caoutchouc, and described strain gauge pressure sensor is located between described tup and described elastic caoutchouc, and described elastic caoutchouc front end is also connected with cover plate, when described ram hammer impacts to sample, described elastic caoutchouc produces deformation, described strain gauge pressure sensor detects the pressure suffered by described ram hammer, and described strain gauge pressure sensor and described data collecting card are electrically connected, electric pressure signal detected by described strain gauge pressure sensor gathers by described data collecting card, and image data is passed to described computing machine, described computing machine is provided with the matching used software platform of described data collecting card and can shows image data.Because described cover plate can cover described elastic caoutchouc, therefore, it is possible to protect described elastic caoutchouc, and the reacting force of sample to described backing plate can be transmitted well.
By following description also by reference to the accompanying drawings, the present invention will become more clear, and these accompanying drawings are for explaining embodiments of the invention.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of an embodiment of mechanical shock test of the present invention equipment.
Fig. 2 is the circuit theory module map of mechanical shock test's equipment as shown in Figure 1.
Embodiment
With reference now to accompanying drawing, describe embodiments of the invention, element numbers similar in accompanying drawing represents similar element.As mentioned above, in embodiment as shown in Figure 1, the invention provides the artificial high frequency machinery impact test equipment 100 that embodiment provides, comprise: base 1, guide pillar 2, drive unit 3, ram hammer 4, backing plate 5, described base 1 is horizontally disposed with and described guide pillar 2 fixedly stands on described base 1, and described guide pillar 2 upper end is also provided with crossbeam 6, the height of described crossbeam 6 can need adjustment according to test, described ram hammer 4 is sheathed on described guide pillar 2 and hangs on described crossbeam 6, described backing plate 5 is located at described base 1 upper surface and is positioned at below described ram hammer 4, sample (not shown) is placed on described backing plate 5, described drive unit 3 can drive described ram hammer 4 promote on described guide pillar 2 or decline, also comprise strain gauge pressure sensor 7, data collecting card 8 and computing machine 9, described ram hammer 4 comprises agent structure 4a and is connected to the tup 4b below described agent structure 4a separatably, described tup 4b end is connected with one section of elastic caoutchouc 30, and described strain gauge pressure sensor 7 is located between described tup 4b and described elastic caoutchouc 30, and described elastic caoutchouc 30 front end is also connected with cover plate 10, when described ram hammer 4 impacts to described sample, described elastic caoutchouc 30 produces deformation, described strain gauge pressure sensor detects the pressure suffered by described ram hammer, and described strain gauge pressure sensor 7 is electrically connected with described data collecting card 8, acceleration electric signal detected by described strain gauge pressure sensor 7 gathers by described data collecting card 8, and image data is passed to described computing machine 9, described computing machine 9 is provided with the matching used software platform of described data collecting card 8 and can shows image data.
In an embodiment, also comprise the controller 11 for controlling described drive unit 3, described controller 11 is electrically connected with described drive unit 3, and is also connected with described computing machine 9.Described computing machine 9 sends operational order to described controller 11, and described controller 11 is construed to corresponding clock signal according to the operational order of described computing machine 9 and works to control described hydraulic pump 31.
In an embodiment, described drive unit 3 comprises hydraulic pump 31, high-pressure oil pipe 32 and hydraulic cylinder 33, and described hydraulic pump 31 is connected with described hydraulic cylinder 33 by described high-pressure oil pipe 32.
In an embodiment, described ram hammer 4 comprises the described agent structure 4a in inverted trapezoidal shape and is connected to the columniform described tup 4b below described agent structure 4a separatably, and described tup 4b and described agent structure 4a is threaded connection integral.The bottom of described agent structure 4a is convexly equipped with a cylindrical boss, this outer wall of boss is provided with external thread, the top of described tup 4b then caves inward and is formed cylindrical and establish female groove, by coordinating of this external thread and this internal thread, described tup 4b is combined together tightly with described agent structure 4a.
In an embodiment, upper cover plate 12 is also provided with above described guide pillar 2, space between described upper cover plate 12 and described agent structure 4a is also provided with spring 13, described spring 13 one end is fixedly connected with described upper cover plate 12, and described spring 13 other end is connected separatably with the upper surface of described agent structure 4a.In the present embodiment, described spring 13 is applied to artificial high-frequency percussion test, and the vibration frequency of described ram hammer 4 is by the inherently frequency decision of described spring 13, and it should be noted that, in test process, do not allow the scope that draws high of described spring 13 to exceed its elastic deformation scope.
In an embodiment, also comprise the butt hook 14 of four band studs, butt hook 14 one end of described band stud is stud, the other end is hook structure, described agent structure 4a upper surface is provided with four threaded holes be circumferentially evenly arranged, the circle in threaded hole besieged city is close with the diameter of section of described spring 13, and described stud is connected with described threaded hole threaded engagement, and described hook structure then hooks the lower end of described spring 13.Firmly must be connected between this hook structure with described spring 13, prevent from, in described spring 13 vibration processes, coming off.
In an embodiment, the rectangular shape of described backing plate 5 and being carried on described base 1, and four drift angle places are provided with the set bolt 51 for preventing described backing plate 5 from offseting.
In an embodiment, described base 1 is also provided with the photoelectric sensor 20 for detecting described ram hammer 4 level height, described photoelectric sensor 20 is electrically connected with described controller 11, and described controller 11 controls the height of described ram hammer 4 according to the signal that described photoelectric sensor 20 feeds back.
Below describe the present invention's artificial High-frequency machine tool impact test equipment 100 in detail, the present invention can have two kinds of test patterns:
Test pattern one: described upper cover plate 12 does not arrange spring 13 with described agent structure 4a, start the present invention, by described software platform input of control commands, described controller 11 receives and controls described hydraulic cylinder 33 according to this control command and promotes described ram hammer 4, now, the elevation information of described photoelectric sensor 20 to described ram hammer 4 feeds back to described controller 11, described controller 11 accurately controls according to the height of the feedback signal of described photoelectric sensor 20 to described ram hammer 4, after treating that described ram hammer 4 fixes on default height, also must be fixed between described ram hammer 4 and described guide pillar 2, prevent before on-test, described ram hammer 4 falls suddenly, cause unnecessary loss, fixed sample, after guaranteeing that sample fixes, cancel the engaging between described ram hammer 4 with described guide pillar 2, discharge the connection between described hydraulic cylinder 33 and described ram hammer 4, allow described ram hammer 4 along the track movement of falling object of described guide pillar 2, after treating that described tup 4b contacts sample, start to do retarded motion, now the acceleration signal detected is sent to described data collecting card 8 by described strain gauge pressure sensor 7, described data collecting card 8 is generally sample to acceleration signal with 56KHZ sampling rate, and send to described computing machine 9, described computing machine 9 is provided with the matching used software platform of described data collecting card 8 and can shows image data, described software platform has collection, preserve, playback, analyze, export function.
Test pattern two: described upper cover plate 12 arranges described spring 13 with described agent structure 4a, the upper end of described spring 13 is fixedly connected with described upper cover plate 12, lower end is connected with described agent structure 4a by the butt hook 14 of the described stud of band, and prevent described spring 13 from coming off, open consumer of the present invention, by described software platform input of control commands, described controller 11 receives and controls described hydraulic cylinder 33 according to this control command and promotes described ram hammer 4, and the butt hook 14 of described band stud is mentioned in the lump, now, the elevation information of described photoelectric sensor 20 to described ram hammer 4 feeds back to described controller 11, described controller 11 accurately controls according to the height of the feedback signal of described photoelectric sensor 20 to described ram hammer 4, after treating that described ram hammer 4 fixes on default height, also must be fixed between described ram hammer 4 and described guide pillar 2, prevent before on-test, described ram hammer 4 falls suddenly, cause unnecessary loss, fixed sample, after guaranteeing that sample fixes, cancel the engaging between described ram hammer 4 with described guide pillar 2, discharge the connection between described hydraulic cylinder 33 and described ram hammer 4, allow described ram hammer 4 along the track movement of falling object of described guide pillar 2, after treating that described tup 4b contacts sample, start to do retarded motion, when described spring 13 is stretched to greatest extent, described ram hammer 4 speed is kept to 0, the elastic potential energy of described spring 13 is converted to the kinetic energy moved upward, change between kinetic energy and elastic potential energy thus, and form the vibration of described ram hammer 4, in the process that described ram hammer 4 vibrates, the acceleration signal detected is sent to described data collecting card 8 by described strain gauge pressure sensor 7, described data collecting card 8 is generally sample to acceleration signal with 56KHZ sampling rate, and send to described computing machine 9, described computing machine 9 is provided with the matching used software platform of described data collecting card 8 and can shows image data, described software platform has collection, preserve, playback, analyze, export function.
In conjunction with Fig. 1 and 2, mechanical shock test of the present invention equipment 100, when described ram hammer 4 impacts to described sample, described elastic caoutchouc 30 produces deformation, described strain gauge pressure sensor detects the pressure suffered by described ram hammer, and described strain gauge pressure sensor 7 is electrically connected with described data collecting card 8, acceleration electric signal detected by described strain gauge pressure sensor 7 gathers by described data collecting card 8, and image data is passed to described computing machine 9, described computing machine 9 is provided with the matching used software platform of described data collecting card 8 and can shows image data.Because described cover plate 10 can cover described strain gauge pressure sensor 7, therefore, it is possible to protect described strain gauge pressure sensor 7, and the reacting force of sample to described backing plate 5 can be transmitted well.
Above disclosedly be only the preferred embodiments of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the present patent application the scope of the claims is done, still belong to the scope that the present invention is contained.
Claims (9)
1. an artificial high frequency machinery impact test equipment, comprise: base, guide pillar, drive unit, ram hammer, backing plate, described base is horizontally disposed with and described guide pillar fixedly stands on described base, and described guide pillar upper end is also provided with crossbeam, described ram hammer is sheathed on described guide pillar and hangs on described crossbeam, described backing plate is located at described base upper surface and is positioned at below described ram hammer, sample is placed on described backing plate, it is characterized in that, described drive unit can drive described ram hammer promote on described guide pillar or decline, also comprise strain gauge pressure sensor, data collecting card and computing machine, the tup that described ram hammer comprises agent structure and is connected to separatably below described agent structure, described tup end is connected with one section of elastic caoutchouc, and described strain gauge pressure sensor is located between described tup and described elastic caoutchouc, and described elastic caoutchouc front end is also connected with cover plate, when described ram hammer impacts to sample, described elastic caoutchouc produces deformation, described strain gauge pressure sensor detects the pressure suffered by described ram hammer, and described strain gauge pressure sensor and described data collecting card are electrically connected, electric pressure signal detected by described strain gauge pressure sensor gathers by described data collecting card, and image data is passed to described computing machine, described computing machine is provided with the matching used software platform of described data collecting card and can shows image data.
2. artificial high frequency machinery impact test equipment as claimed in claim 1, it is characterized in that, also comprise the controller for controlling described drive unit, described controller and described drive unit are electrically connected, and are also connected with described computing machine.
3. artificial high frequency machinery impact test equipment as claimed in claim 2, it is characterized in that, described drive unit comprises hydraulic pump, high-pressure oil pipe and hydraulic cylinder, and described hydraulic pump is connected with described hydraulic cylinder by described high-pressure oil pipe.
4. artificial high frequency machinery impact test equipment as claimed in claim 1, it is characterized in that, the columniform described tup that described ram hammer comprises the described agent structure in inverted trapezoidal shape and is connected to separatably below described agent structure, and described tup and described agent structure are threaded connection integral.
5. artificial high frequency machinery impact test equipment as claimed in claim 4, it is characterized in that, also upper cover plate is provided with above described guide pillar, space between described upper cover plate and described agent structure is also provided with spring, described spring one end is fixedly connected with described upper cover plate, and the described spring other end is connected separatably with the upper surface of described agent structure.
6. artificial high frequency machinery impact test equipment as claimed in claim 5, it is characterized in that, also comprise the butt hook of some band studs, butt hook one end of described band stud is stud, the other end is hook structure, described agent structure upper surface is provided with some threaded holes be circumferentially evenly arranged, and described stud is connected with described threaded hole threaded engagement, and described hook structure then hooks the lower end of described spring.
7. the artificial high frequency machinery impact test equipment as described in any one of claim 1-6, is characterized in that, the rectangular shape of described backing plate and being carried on described base, and four drift angle places are provided with the set bolt for preventing described backing plate from offseting.
8. the artificial high frequency machinery impact test equipment as described in any one of claim 1-6, it is characterized in that, described side edge thereof is also provided with for described elastic caoutchouc is carried out coated bound edge.
9. artificial high frequency machinery impact test equipment as claimed in claim 2, it is characterized in that, described base is also provided with the photoelectric sensor for detecting described ram hammer level height, described photoelectric sensor and described controller are electrically connected, and described controller controls the height of described ram hammer according to the signal that described photoelectric sensor feeds back.
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| CN201510916560.6A CN105387987A (en) | 2015-12-11 | 2015-12-11 | Manual high-frequency mechanical impact test apparatus |
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| CN201510916560.6A CN105387987A (en) | 2015-12-11 | 2015-12-11 | Manual high-frequency mechanical impact test apparatus |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805088A (en) * | 2016-06-03 | 2016-07-27 | 南通纺都置业有限公司 | Testing device for impact force at different positions of oil cylinder |
| CN106053218A (en) * | 2016-07-25 | 2016-10-26 | 上海工程技术大学 | To-be-tested sample clamping device for testing shock isolation performance of materials |
| CN109682458A (en) * | 2019-03-05 | 2019-04-26 | 重庆克来智能科技有限公司 | A kind of detection lathe and its device for detecting part intrinsic frequency |
| CN110631796A (en) * | 2019-10-09 | 2019-12-31 | 中国铁建重工集团股份有限公司 | Testing device |
| CN111707566A (en) * | 2020-06-24 | 2020-09-25 | 太原理工大学 | Experimental system for researching dynamic response of structure under impact load and application method |
| CN111721618A (en) * | 2020-08-03 | 2020-09-29 | 内蒙古科技大学 | Test platform for testing impact crushing characteristic of ore particles |
| CN114354040A (en) * | 2021-12-06 | 2022-04-15 | 河北燕兴机械有限公司 | Testing device for firing energy of firing mechanism |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111707566A (en) * | 2020-06-24 | 2020-09-25 | 太原理工大学 | Experimental system for researching dynamic response of structure under impact load and application method |
| CN111721618A (en) * | 2020-08-03 | 2020-09-29 | 内蒙古科技大学 | Test platform for testing impact crushing characteristic of ore particles |
| CN111721618B (en) * | 2020-08-03 | 2023-11-14 | 内蒙古科技大学 | Test platform for testing impact crushing characteristics of ore particles |
| CN114354040A (en) * | 2021-12-06 | 2022-04-15 | 河北燕兴机械有限公司 | Testing device for firing energy of firing mechanism |
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Application publication date: 20160309 |