CN203705279U - Speed detecting device - Google Patents
Speed detecting device Download PDFInfo
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- CN203705279U CN203705279U CN201420013100.3U CN201420013100U CN203705279U CN 203705279 U CN203705279 U CN 203705279U CN 201420013100 U CN201420013100 U CN 201420013100U CN 203705279 U CN203705279 U CN 203705279U
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- speed
- impact
- measuring device
- sensing head
- speed measuring
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Abstract
The utility model relates to a speed detecting device which is connected to an impact testing device, wherein the impact testing device comprises an impact drop hammer; the speed detecting device comprises a speed detecting sensing head, a fixing frame, a platform, a testing scale and a signal acquisition and analysis component; the speed detecting sensing head is connected to the fixing frame; the fixing frame is connected to the platform; the platform is connected to the impact testing device; the testing scale is fixed on the outer surface of the impact drop hammer, and moves along with the impact drop hammer; the signal acquisition and analysis component is connected to the speed detecting sensing head. Compared to the prior art, the speed detecting device disclosed by the utility model has the advantages of actually and accurately acquiring impact speed or impact energy, rebound speed and the like on the surface of a protective material under impact.
Description
Technical field
The utility model relates to material analysis technical field, relates in particular to a kind of speed measuring device.
Background technology
Along with the continuous propelling of modernization, people suffer the low velocity impact such as throwing object in high sky, delivery vehicle collision injury phenomenon more prevalent, also exist the shock of aircraft and the non-transfixion damage of flak jackets in Aero-Space and military domain, therefore for the protection requirements of low velocity impact, be to need in a hurry one of key issue solving for the research of the resistance to low velocity impact performance of different materials.
Existing apparatus for impact testing comprises pendulum and drop hammer type, and in view of test flexibility limit, drop hammer impact testing machine uses comparatively extensive.But traditional drop hammer impact testing machine mostly is by setting height of the fall, calculate impact energy or the impact velocity of impact specimen, ignore the energy loss value of dropping hammer in impact direction path, thereby cause obtained impact velocity parameter value inaccurate, especially the impact velocity numerical error obtaining in the time setting lower height of the fall is larger, affects the judgement of protective materials impact resistance, simultaneously because rebound phenomena occurs in meeting in drop impact sample process and bounce-back speed is relevant with the architectural feature of sample itself, therefore impact energy can be divided into drop hammer bounce-back energy and sample absorption energy, and traditional drop hammer impact testing machine only can be measured by how much failure modes to specimen surface after being hit, the absorption energy of rear sample is impacted in qualitative analysis indirectly, and cannot quantitatively determine the endergonic size of sample, the bounce-back energy dropping hammer is more had no way of known, therefore the data that existing drop hammer impact testing machine obtains cannot be comprehensive, the resistance to low velocity impact performance of thorough understanding protective materials.
Summary of the invention
The purpose of this utility model is exactly to have proposed a kind of can realize truly, accurately the know impact velocity of protective materials surface in the time being subject to impacting and the speed measuring device of bounce-back speed in order to overcome the defect that above-mentioned existing apparatus for impact testing exists.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of speed measuring device, this speed measuring device is connected with apparatus for impact testing, and described apparatus for impact testing comprises that impact drops hammer, and described speed measuring device comprises the sensing head that tests the speed, fixed mount, platform, test scale and signal processing and analysis assembly;
The described sensing head that tests the speed is connected with fixed mount;
Described fixed mount is connected on platform;
Described platform is connected with apparatus for impact testing;
Described test scale is fixed on to impact and drops hammer on outside surface, with the impact associated movement that drops hammer;
Described signal processing and analysis assembly is connected with the sensing head that tests the speed.
The described sensing head that tests the speed comprises the sending module that sends light signal and the receiver module that receives light pulse coded signal, and described receiver module is connected with signal processing and analysis assembly.
Described fixed mount comprises a Duct fixing clamp and a T-shaped connection plate, and the described sensing head that tests the speed is fixed on T-shaped connection plate by Duct fixing clamp.
Described Duct fixing clamp is fixed on the vertical edge edge of T-shaped connection plate.
Described Duct fixing clamp is provided with the anchor ear for placing the sensing head that tests the speed.
Described platform is by a trapezium structure plate and an integral type plate that rectangle structure plate is formed by connecting, on described trapezium structure plate, be provided with two row's mounting holes near inner side, short base, described platform is connected with fixed mount by this mounting hole, described rectangle structure plate is provided with fixed orifice, and described platform is connected with apparatus for impact testing by fixed orifice.
Described test scale is provided with the triggering coding that starts sampling for trigger pip collection analysis assembly.
Described test scale is diffraction grating or reflecting bar code.
Described signal processing and analysis assembly comprises data analysis collector, cruise Control Module and the signal transmission passage for signal transmission, described data analysis collector one end connects by signal transmission passage the sensing head that tests the speed, and the other end connects cruise Control Module.
Compared with prior art, the utlity model has following advantage:
Existing apparatus for impact testing calculates impact energy or the impact velocity of impact specimen by setting height of the fall, ignore the energy loss value of dropping hammer in impact direction path, thereby cause obtained impact velocity parameter value inaccurate, especially in the time setting lower height of the fall, impact velocity error is larger, affects the judgement of protective materials impact resistance; And only can impact the absorption energy of rear sample by how much failure modes of specimen surface after being hit are measured to indirectly qualitative analysis, and cannot quantitatively determine the endergonic size of sample, the bounce-back energy dropping hammer is more had no way of known.Speed measuring device of the present utility model is connected with apparatus for impact testing, by the sensing head that tests the speed accurately record impact the impact velocity of moment before drop impact sample and impact after the speed of bounce-back moment, avoid the interference of dropping hammer and consuming in impact direction path self-energy, guaranteed the impact velocity that the obtains accuracy of impact energy parameter value in other words, can obtain again the bounce-back speed of dropping hammer simultaneously, and then obtain dropping hammer bounce-back energy and sample absorption energy, be conducive to the resistance to low velocity impact performance of protective materials to carry out deep research and inquirement.Impact energy is with the difference of bounce-back energy just for sample absorbs energy, and the utility model can quantitatively be determined the endergonic size of sample.
Accompanying drawing explanation
Fig. 1 is the general structure schematic diagram of the utility model device;
Fig. 2 is the test the speed schematic diagram of sensing head of the utility model;
Fig. 3 is the schematic diagram of the utility model fixed mount;
Fig. 4 is the schematic diagram of the utility model platform;
Fig. 5 is the process flow diagram that tests the speed of the utility model device.
Wherein: 1, the sensing head that tests the speed; 2, fixed mount; 3, platform; 4, test scale; 5, impact and drop hammer; 6, signal processing and analysis assembly; 7, data analysis collector; 8, cruise Control Module; 9, signal transmission passage; 2-1, Duct fixing clamp 2-2, T-shaped connection plate 2-3, pipe clamp mounting hole; 2-4, waist type mounting hole; 3-1, trapezium structure plate; 3-2, rectangle structure plate.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.The present embodiment is implemented as prerequisite take technical solutions of the utility model, provided detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
As shown in Figure 1, a kind of speed measuring device, this speed measuring device and apparatus for impact testing are used in conjunction with, apparatus for impact testing comprises impacting and drops hammer 5, and speed measuring device comprises the sensing head 1 that tests the speed, fixed mount 2, platform 3, test scale 4 and signal processing and analysis assembly 6, and the sensing head 1 that tests the speed is connected with fixed mount 2, fixed mount 2 is connected on platform 3, test scale 4 is fixed on to impact and drops hammer on 5 outside surfaces, and with impact 5 associated movements that drop hammer, signal processing and analysis assembly 6 is connected with the sensing head 1 that tests the speed.
The sensing head 1 that tests the speed comprises the sending module that sends light signal and the receiver module that receives light pulse coded signal, and receiver module is connected with signal processing and analysis assembly 6.
As shown in Fig. 2-Fig. 3, fixed mount 2 comprises a Duct fixing clamp 2-1 and a T-shaped connection plate 2-2, the sensing head 1 that tests the speed is positioned at Duct fixing clamp 2-1 anchor ear, be fixed on T-shaped connection plate 2-2 by Duct fixing clamp 2-1, the anchor ear diameter of Duct fixing clamp 2-1 conforms to sensing head 1 diameter that tests the speed, and Duct fixing clamp 2-1 is fixed on the vertical edge edge of T-shaped connection plate 2-2.
T-shaped connection plate 2-2 is provided with pipe clamp mounting hole 2-3 and waist type mounting hole 2-4, screw is fixed on fixed mount 2 by the sensing head 1 that will test the speed of the pipe clamp mounting hole 2-3 on base plate mounting hole, the T-shaped connection plate 2-2 of Duct fixing clamp 2-1, pipe clamp mounting hole 2-3 diameter conforms to Duct fixing clamp base plate mounting hole diameter, and T-shaped connection plate 2-2 is fixed on platform 3 by waist type mounting hole 2-4.
As shown in Figure 4, platform 3 is by a trapezium structure plate 3-1 and an integral type plate that rectangle structure plate 3-2 is formed by connecting, trapezium structure plate 3-1 is upper is provided with two row's mounting holes near inner side, short base, this mounting hole can be selected different distance according to actual test request, platform 3 is connected with fixed mount 2 by this mounting hole, rectangle structure plate 3-2 is provided with a pair of fixed orifice, and platform 3 is connected with apparatus for impact testing by fixed orifice.
Test scale 4 is provided with the triggering coding that starts sampling for trigger pip acquisition analysis system 6, test scale 4 is diffraction grating or reflecting bar code, and length of the scale is fixed on to impact after accurately measuring drops hammer on 5 outside surfaces, can be with the impact of apparatus for impact testing 5 associated movements that drop hammer.
Signal processing and analysis system 6 comprises data analysis collector 7, cruise Control Module 8 and the signal transmission passage 9 for signal transmission.Signal transmission passage 9 can be noiselike signal transmission cable; Data analysis collector 7 connects by signal transmission passage 9 sensing head 1 that tests the speed, and for signal is carried out after analog to digital conversion, input cruise Control Module 8 is stored, computing and demonstration; Cruise Control Module 8 connection data are analyzed collector 7, and data acquisition is started or stoped to control.
In the time carrying out low velocity impact test, this device is arranged on apparatus for impact testing by the fixed orifice of platform 3.
As shown in Figure 5, the process flow diagram that tests the speed for the utility model device: start apparatus for impact testing, impact 5 free-fallings in the time of setting height of dropping hammer, when impact is dropped hammer test scale surperficial and entered while testing the speed sensing head 1 Ear Mucosa Treated by He Ne Laser Irradiation point range, test the speed sensing head 1 sending module send active signal to testing scale 4, test scale 4 forms pulse with drop hammer 5 mobile reflection active signal of impact, the receiver module of sensing head 1 of testing the speed receive test scale 4 first trigger after coded signal, the sampled signal of data analysis collector 7 is triggered, start sampling, the receiver module of sensing head 1 of testing the speed receive test scale 4 last trigger after coded signal, stop sampling, sampled signal is delivered to cruise Control Module 8 after being transported to data analysis collector 7 analog-to-digital conversion process by signal transmission passage 9 again, cruise Control Module 8 performs mathematical calculations according to the duration of sampled signal and the regular length of test scale 4, obtain impacting 5 impact velocity and the bounce-back speed to data recording, storage and demonstration of dropping hammer, finally can calculate according to the impact velocity obtaining and bounce-back speed the absorption energy of impact energy, bounce-back energy and material.
Claims (9)
1. a speed measuring device, this speed measuring device is connected with apparatus for impact testing, described apparatus for impact testing comprises impacting and drops hammer (5), it is characterized in that: described speed measuring device comprises the sensing head that tests the speed (1), fixed mount (2), platform (3), test scale (4) and signal processing and analysis assembly (6);
The described sensing head that tests the speed (1) is connected with fixed mount (2);
Described fixed mount (2) is connected on platform (3);
Described platform (3) is connected with apparatus for impact testing;
Described test scale (4) is fixed on to impact and drops hammer on (5) outside surface, with impact (5) associated movement that drops hammer;
Described signal processing and analysis assembly (6) is connected with the sensing head that tests the speed (1).
2. speed measuring device according to claim 1, it is characterized in that: the described sensing head that tests the speed (1) comprises the sending module that sends light signal and the receiver module that receives light pulse coded signal, and described receiver module is connected with signal processing and analysis assembly (6).
3. speed measuring device according to claim 1, it is characterized in that: described fixed mount (2) comprises a Duct fixing clamp (2-1) and a T-shaped connection plate (2-2), the described sensing head that tests the speed (1) is fixed on T-shaped connection plate (2-2) by Duct fixing clamp (2-1).
4. speed measuring device according to claim 3, is characterized in that: described Duct fixing clamp (2-1) is fixed on the vertical edge edge of T-shaped connection plate (2-2).
5. speed measuring device according to claim 3, is characterized in that: described Duct fixing clamp (2-1) is provided with the anchor ear for placing sensing head (1) of testing the speed.
6. speed measuring device according to claim 1, it is characterized in that: the integral type plate of described platform (3) for being formed by connecting by a trapezium structure plate (3-1) and a rectangle structure plate (3-2), described trapezium structure plate (3-1) is upper is provided with two row's mounting holes near inner side, short base, described platform (3) is connected with fixed mount (2) by this mounting hole, described rectangle structure plate (3-2) is provided with fixed orifice, and described platform (3) is connected with apparatus for impact testing by fixed orifice.
7. speed measuring device according to claim 1, is characterized in that: described test scale (4) is provided with the triggering coding that starts sampling for trigger pip collection analysis assembly (6).
8. speed measuring device according to claim 7, is characterized in that: described test scale (4) is diffraction grating or reflecting bar code.
9. speed measuring device according to claim 1, it is characterized in that: described signal processing and analysis assembly (6) comprises data analysis collector (7), cruise Control Module (8) and the signal transmission passage (9) for signal transmission, described data analysis collector (7) one end connects by signal transmission passage (9) sensing head (1) that tests the speed, and the other end connects cruise Control Module (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420013100.3U CN203705279U (en) | 2014-01-09 | 2014-01-09 | Speed detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420013100.3U CN203705279U (en) | 2014-01-09 | 2014-01-09 | Speed detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203705279U true CN203705279U (en) | 2014-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420013100.3U Expired - Fee Related CN203705279U (en) | 2014-01-09 | 2014-01-09 | Speed detecting device |
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| CN (1) | CN203705279U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698235A (en) * | 2014-01-09 | 2014-04-02 | 上海工程技术大学 | Speed testing device for low-speed impact testing |
| CN113418803A (en) * | 2021-06-21 | 2021-09-21 | 西安热工研究院有限公司 | Method and device for testing impact toughness of pipe plate welding joint plug |
| CN114166663A (en) * | 2021-11-19 | 2022-03-11 | 中煤科工开采研究院有限公司 | Drop hammer impact experimental device and method |
-
2014
- 2014-01-09 CN CN201420013100.3U patent/CN203705279U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698235A (en) * | 2014-01-09 | 2014-04-02 | 上海工程技术大学 | Speed testing device for low-speed impact testing |
| CN103698235B (en) * | 2014-01-09 | 2016-11-23 | 上海工程技术大学 | A kind of speed measuring device for low velocity impact test |
| CN113418803A (en) * | 2021-06-21 | 2021-09-21 | 西安热工研究院有限公司 | Method and device for testing impact toughness of pipe plate welding joint plug |
| CN114166663A (en) * | 2021-11-19 | 2022-03-11 | 中煤科工开采研究院有限公司 | Drop hammer impact experimental device and method |
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| 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: 20140709 Termination date: 20190109 |
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| CF01 | Termination of patent right due to non-payment of annual fee |