CN204373831U - A kind of momentum proving installation - Google Patents
A kind of momentum proving installation Download PDFInfo
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- CN204373831U CN204373831U CN201520076065.4U CN201520076065U CN204373831U CN 204373831 U CN204373831 U CN 204373831U CN 201520076065 U CN201520076065 U CN 201520076065U CN 204373831 U CN204373831 U CN 204373831U
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- momentum
- rotating shaft
- fork
- target assembly
- proving installation
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Abstract
The utility model discloses a kind of momentum proving installation, wherein, target assembly is fixedly connected with the lower end of fork, target assembly is symmetric relative to fork, the upper end of fork is fixedly connected with horizontal rotating shaft, the Impulsive load face of target assembly and shaft parallel, rotating shaft is installed on the bottom of rectangle contiguous block by roller bearing, the corner of rectangle contiguous block is fixedly connected with the upper end of four of support support bars, one end fixed cover of rotating shaft is equipped with axle sleeve, the inner core fixed cover of Grating Angle Sensor is loaded on outside axle sleeve, the signal output part of Grating Angle Sensor is connected with the signal input part of data acquisition unit.The utility model adopts target assembly, fork, rotating shaft and roller bearing composition pendulum structure, have that structure exquisiteness is reasonable, compact, quality of fit is high, state not malleable and processing, installation, maintenance, advantage easy to use, utilize Grating Angle Sensor to measure the pendulum angle of rotating shaft and target assembly, momentum parameter more accurately can be obtained.
Description
Technical field
The utility model relates to a kind of momentum proving installation, particularly relates to a kind of momentum proving installation based on grating sensor.
Background technology
Momentum proving installation is a kind of device tested explosive momentum, such as: object is when the irradiation suffering pulse X-ray, the portion of energy of soft X-ray will at body surface instantaneous deposition, the vaporization of material is caused to recoil, apply an instantaneous impulse load to it, and then cause the dynamic response of object, destruction or inefficacy.For the structural response of research object under X-ray irradiates, the impulse load adopting the true X-ray of sheet explosive loading simulation to produce is comparatively economic, practical means.The specific impulse parameter of sheet explosive is that sheet explosive simulation X-ray loads one of important parameter of the load design in lower structural response experimental study.
Sheet explosive impulse measurement generally adopts ballistic pendulum structure, and traditional measurement mechanism mainly contains two kinds of modes, and a kind of is adopt the mode record pendulum full swing angle of spring and pointer to calculate explosive momentum; Another kind adopts the angle of angular encoder and oscillograph recording pivot angle to calculate explosive momentum.
In above-mentioned conventional impact pendulum structure, the first device is as early stage sheet explosive specific impulse proving installation, structure comparison is simple and crude, crucial connection (such as pendulum and fork, fork and rotating shaft etc.) precision is not high, easily loosen, under impact loading, state is difficult to keep, and measurement of angle adopts pointer-index dial pattern, and precision is also lower; Although the second momentum proving installation have employed angular encoder, main shaft and grating rotating shaft adopt gear set to be connected, and due to the gap of meshing wheel between cog, introduce new source of error, are unfavorable for the accurate measurement of corner, cause measurement result accurate not.
Utility model content
The purpose of this utility model is just that providing a kind of takes measurement of an angle based on grating sensor to solve the problem and measure accurate momentum proving installation.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of momentum proving installation, comprise support, rectangle contiguous block, target assembly, fork, rotating shaft, roller bearing, Grating Angle Sensor and data acquisition unit, described target assembly is fixedly connected with the lower end of described fork, described target assembly is symmetric relative to described fork, the upper end of described fork is fixedly connected with horizontal described rotating shaft, the Impulsive load face of described target assembly and described shaft parallel, described rotating shaft is installed on the bottom of described rectangle contiguous block by roller bearing, the corner of described rectangle contiguous block is fixedly connected with the upper end of four support bars of described support, one end fixed cover of described rotating shaft is equipped with axle sleeve, the inner core fixed cover of described Grating Angle Sensor is loaded on outside described axle sleeve, the signal output part of described Grating Angle Sensor is connected with the signal input part of described data acquisition unit, the Impulsive load face of described target assembly and described shaft parallel.
In said structure, support is as the installation foundation of other parts; Rectangle contiguous block is installed on the top of support, and as the installation foundation of the parts such as rotating shaft, fork, target assembly, itself and support adopt split-type structural, is conducive to the levelness improving rectangle contiguous block, thus improves momentum measuring accuracy; Target assembly for accepting impact, and at percussive action lower swing; Fork for connecting target assembly and rotating shaft, and determines pendulum radius and the swinging track of target assembly; Target assembly is symmetric relative to fork, can prevent target assembly swing process countershaft from producing torsional moment, affect momentum test result; Rotating shaft as the installation foundation of fork, and realizes the function that lifted and freely swing by roller bearing; Roller bearing is for realizing the lifting of rotating shaft and freely swinging; Grating Angle Sensor is used for the pendulum angle of high precision test rotating shaft; Data acquisition unit is for gathering the signal of Grating Angle Sensor output and carrying out data processing.
In order to ensure turning shaft balancing, described roller bearing is two, to be installed in described rotating shaft and to lay respectively at the both sides of described fork.
Particularly, the lower end of described fork adopts lock-screw to be connected with described target assembly.
In order to prevent rotating shaft, produce relative torsion between axle sleeve and this three of inner core of Grating Angle Sensor, be connected by key between described axle sleeve with the inner core of described Grating Angle Sensor, between described rotating shaft and described axle sleeve, between described axle sleeve and described key, be interference fit.
Be in horizontal direction in order to ensure rectangle contiguous block, to guarantee that rotating shaft is in horizontal direction, the upper surface of described rectangle contiguous block is provided with level meter.
Preferably, outside described Grating Angle Sensor, guard shield is installed.
For the ease of the movement of this momentum proving installation, the corner, bottom of described support is provided with four rolling.
Keep stable during test in order to ensure this momentum proving installation, the corner, bottom of described support is also provided with four pin dishes respectively by four supporting legs, described supporting leg can to rotate and fixing at vertical direction relative to the bottom of described support, when described pin dish is in lowest order downwards, the bottom of described roller is higher than the bottom of described pin dish.
In order to improve the stability of strutting system of this momentum proving installation when applying, the lower end of described supporting leg adopts bulb to be connected with between described pin dish.
The beneficial effects of the utility model are:
The utility model adopts target assembly, fork, rotating shaft and roller bearing composition pendulum structure, have that structure exquisiteness is reasonable, compact, quality of fit is high, state not malleable and processing, installation, maintenance, advantage easy to use, Grating Angle Sensor is utilized to measure the pendulum angle of rotating shaft and target assembly, under the prerequisite being starting condition with a certain pivot angle, time dependent pivot angle curve can be obtained, conventional method is adopted to solve its damping, thus obtain the maximum modified pivot angle of timing signal, thus make the momentum parameter of acquisition more accurate.
Accompanying drawing explanation
Fig. 1 is that main TV structure schematic diagram cuts open in the office of momentum proving installation described in the utility model;
Fig. 2 is the plan structure schematic diagram of momentum proving installation described in the utility model;
Fig. 3 is rectangle contiguous block described in the utility model, fork, rotating shaft, roller bearing and Grating Angle Sensor office cut open main TV structure schematic diagram;
Fig. 4 is the syndeton schematic diagram between supporting leg described in the utility model and pin dish;
Fig. 5 is the syndeton schematic diagram between target assembly described in the utility model and fork.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As Figure 1-Figure 5, momentum proving installation described in the utility model comprises support 3, rectangle contiguous block 14, target assembly 1, fork 2, rotating shaft 5, roller bearing, Grating Angle Sensor 8 and data acquisition unit (adopt conventional Christmas device, the position of any appropriate can be arranged on, not shown), target assembly 1 adopts lock-screw 17 to be fixedly connected with the lower end of fork 2, target assembly 1 is symmetric relative to fork 2, in this example, target assembly 1 is cubic shaped, the upper end of fork 2 is fixedly connected with horizontal rotating shaft 5, the Impulsive load face of target assembly 1 is parallel with rotating shaft 5, described roller bearing comprises two, i.e. the first roller bearing 4 and the second roller bearing 6, first roller bearing 4 and the second roller bearing 6 to be set in rotating shaft 5 and to lay respectively at the both sides of fork 2, first roller bearing 4 and the second roller bearing 6 are installed on the bottom of rectangle contiguous block 14, the upper surface of rectangle contiguous block 14 is provided with level meter 15, the corner of rectangle contiguous block 14 and four support bars of support 3 (namely mark the parts pointed by 3, but in figure not in addition mark) upper end be fixedly connected with, one end (right-hand member in Fig. 1) fixed cover of rotating shaft 5 is equipped with axle sleeve 12, the inner core fixed cover of Grating Angle Sensor 8 is loaded on outside axle sleeve 12, be connected by key 13 between axle sleeve 12 and the inner core of Grating Angle Sensor 8, between rotating shaft 5 and axle sleeve 12, interference fit is between axle sleeve 12 and key 13, the signal output part of Grating Angle Sensor 8 is connected with the signal input part of data acquisition unit, guard shield 7 is installed outside Grating Angle Sensor 8, the corner, bottom of support 3 is provided with four rolling 10, the corner, bottom of support 3 is also provided with four pin dishes 11 respectively by four supporting legs 9, the lower end of supporting leg 9 is connected with adopting bulb 16 between pin dish 11, supporting leg 9 can to rotate and fixing at vertical direction relative to the bottom of support 3, when pin dish 11 is in lowest order downwards, the bottom of roller 10 is higher than the bottom of pin dish 11.
As depicted in figs. 1 and 2, before utilizing this momentum proving installation to carry out the test of explosive momentum, first supporting leg 9 is rotated up, roller 10 is contacted to earth play a supportive role, then testing location is pushed into by roller 10, again supporting leg 9 is rotated down, pin dish 11 is contacted to earth play a supportive role, now there is gap between roller 10 and ground, not load-bearing, by supporting leg 9 relative to the position bottom support 3, whole support is made to be in level, even if the level meter 15 of rectangle contiguous block 14 upper surface is horizontal; During measurement, the explosive that will test is pasted onto on the Impulsive load face of target assembly 1, after explosive is detonated, fork 2 swings in reverse direction, drive rotating shaft 5 simultaneously, axle sleeve 12 are rotated together with the inner core of Grating Angle Sensor 8, Grating Angle Sensor 8 by the pendulum angle information transmission that detects to data acquisition unit, data acquisition unit record also stores the maximum pendulum angle of fork 2, obtain maximum pendulum angle, just the momentum of explosive is calculated by the quality of pivot angle, fork 2 and target assembly 1 and moment of inertia, the method calculated is conventional method, does not repeat them here.
Above-described embodiment is preferred embodiment of the present utility model; it is not the restriction to technical solutions of the utility model; as long as without the technical scheme that creative work can realize on the basis of above-described embodiment, all should be considered as falling within the scope of the rights protection of the utility model patent.
Claims (9)
1. a momentum proving installation, it is characterized in that: comprise support, rectangle contiguous block, target assembly, fork, rotating shaft, roller bearing, Grating Angle Sensor and data acquisition unit, described target assembly is fixedly connected with the lower end of described fork, described target assembly is symmetric relative to described fork, the upper end of described fork is fixedly connected with horizontal described rotating shaft, the Impulsive load face of described target assembly and described shaft parallel, described rotating shaft is installed on the bottom of described rectangle contiguous block by roller bearing, the corner of described rectangle contiguous block is fixedly connected with the upper end of four support bars of described support, one end fixed cover of described rotating shaft is equipped with axle sleeve, the inner core fixed cover of described Grating Angle Sensor is loaded on outside described axle sleeve, the signal output part of described Grating Angle Sensor is connected with the signal input part of described data acquisition unit.
2. momentum proving installation according to claim 1, is characterized in that: described roller bearing is two, to be installed in described rotating shaft and to lay respectively at the both sides of described fork.
3. momentum proving installation according to claim 1 and 2, is characterized in that: lower end and the described target assembly of described fork adopt lock-screw to be connected.
4. momentum proving installation according to claim 1, be is characterized in that: be connected by key between described axle sleeve with the inner core of described Grating Angle Sensor, is interference fit between described rotating shaft and described axle sleeve, between described axle sleeve and described key.
5. momentum proving installation according to claim 1, is characterized in that: the upper surface of described rectangle contiguous block is provided with level meter.
6. momentum proving installation according to claim 1, is characterized in that: be provided with guard shield outside described Grating Angle Sensor.
7. momentum proving installation according to claim 1, is characterized in that: the corner, bottom of described support is provided with four rolling.
8. momentum proving installation according to claim 7, it is characterized in that: the corner, bottom of described support is also provided with four pin dishes respectively by four supporting legs, described supporting leg can to rotate and fixing at vertical direction relative to the bottom of described support, when described pin dish is in lowest order downwards, the bottom of described roller is higher than the bottom of described pin dish.
9. momentum proving installation according to claim 8, is characterized in that: the lower end of described supporting leg adopts bulb to be connected with between described pin dish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520076065.4U CN204373831U (en) | 2015-02-03 | 2015-02-03 | A kind of momentum proving installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520076065.4U CN204373831U (en) | 2015-02-03 | 2015-02-03 | A kind of momentum proving installation |
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| Publication Number | Publication Date |
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| CN204373831U true CN204373831U (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520076065.4U Expired - Fee Related CN204373831U (en) | 2015-02-03 | 2015-02-03 | A kind of momentum proving installation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043635A (en) * | 2015-07-14 | 2015-11-11 | 西安近代化学研究所 | Response energy and response impulse testing system of target |
| CN105865709A (en) * | 2016-06-22 | 2016-08-17 | 南京卓砾智测控技术有限公司 | In-field calibration device of pendulum type impact wave pressure sensor |
| CN106643812A (en) * | 2016-12-29 | 2017-05-10 | 中国人民解放军国防科学技术大学 | Data processing method and data processing device for cantilever type impulse pendulum |
-
2015
- 2015-02-03 CN CN201520076065.4U patent/CN204373831U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043635A (en) * | 2015-07-14 | 2015-11-11 | 西安近代化学研究所 | Response energy and response impulse testing system of target |
| CN105865709A (en) * | 2016-06-22 | 2016-08-17 | 南京卓砾智测控技术有限公司 | In-field calibration device of pendulum type impact wave pressure sensor |
| CN105865709B (en) * | 2016-06-22 | 2018-06-08 | 南京卓砾智测控技术有限公司 | A kind of Charpy wave pressure force snesor field calibration device |
| CN106643812A (en) * | 2016-12-29 | 2017-05-10 | 中国人民解放军国防科学技术大学 | Data processing method and data processing device for cantilever type impulse pendulum |
| CN106643812B (en) * | 2016-12-29 | 2019-01-22 | 中国人民解放军国防科学技术大学 | A kind of data processing method and device of cantilevered momentum pendulum |
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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: 20150603 Termination date: 20180203 |
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| CF01 | Termination of patent right due to non-payment of annual fee |