CN205843882U - A kind of Charpy wave pressure sensor field calibration device - Google Patents
A kind of Charpy wave pressure sensor field calibration device Download PDFInfo
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- CN205843882U CN205843882U CN201620627531.8U CN201620627531U CN205843882U CN 205843882 U CN205843882 U CN 205843882U CN 201620627531 U CN201620627531 U CN 201620627531U CN 205843882 U CN205843882 U CN 205843882U
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Abstract
nullThe application relates to a kind of Charpy wave pressure sensor field calibration device，Motor is connected with worm shaft，Worm gear is arranged on worm-wheel shaft，Electromagnetic clutch is had on worm-wheel shaft rear bearing block，Electromagnetic clutch is connected with worm-wheel shaft and fork axle，Rotary encoder is had on fork axle front-end bearing pedestal，Rotary encoder and fork axle are installed together，Fork shaft end is provided with fork，Rotary encoder is provided with brake block，Brake block is arranged on one end of braking fork，The other end of braking fork has eccentric wheel sliding block，Eccentric is below eccentric wheel sliding block，Eccentric side is connected with eccentric wheel handle，Brake block is provided with cam，On cam slide base, cam slide is installed，On braking fork, crank is installed，Crank is connected with connecting rod，The other end of connecting rod is provided with slide block，Slide block is simultaneously attached on slider waveguide rod，The other end of fork makes compressing cylinder.This utility model calibrating installation clashes into the semisinusoidal pressure pulse making compressing cylinder generation peak ranges at 0.1MPa ~ 10MPa by pendulum, thus realizes the field calibration of shock wave pressure sensor.
Description
Technical field
This utility model relates to measurement and calibration equipment field, particularly relates to a kind of Charpy wave pressure sensor existing
Field calibration device.
Background technology
When carrying out shock wave pressure test, on the one hand for suppression or reduction ghost effect, sensor need to be taked necessity
Safeguard procedures, such as heat insulation, shockproof, shock resistance, cause the equivalent mass of actually used sensor cluster or equivalent stiffness to be sent out
Changing.On the other hand, after sensor life-time service, sensitivity can offset, and causes the shock wave pressure test system set up
Operating characteristic parameter there is the biggest uncertainty.Therefore, before real impact wave pressure is tested, measurement system is carried out school
Accurate essential.
The ICP type conventional for shock wave pressure test or piezoelectric type high resistant output type sensor, due to this kind of sensor
The measurement system constituted cannot ensure that its time constant reaches infinitely great, and the low frequency characteristic causing system is not ideal enough, uses quiet
State timing signal there will be the phenomenons such as drift, and therefore static demarcating cannot guarantee the accuracy of such sensor system sensitivity.With
Time, owing to the static demarcating load time is long, the service life of sensor can be directly influenced.Dynamic calibration mainly uses shock tube
As pressure source, the Step Pressure time produced by current all of shock tube can not reach infinitely great, therefore uses shock wave
Pipe calibration cannot obtain shock wave pressure and measure the low frequency characteristic of system.
Quasistatic calibration is to utilize the calibration of hydraulic pressure device that drops hammer to produce to be similar to semisinusoidal pressure driving source to sensor
Calibrate.The effective spectrum of semisinusoidal signal starts from zero-frequency and has certain effective band, can fully excite sensing
The low frequency modal of system DC ~ 1kHz.Calibration of hydraulic pressure system of dropping hammer can be used for shock wave pressure and measures the quasistatic calibration of system, should
Method is the driving source that the calibration of impact wave measurement system provides a kind of practical.But the existing calibration of hydraulic pressure dress that drops hammer
The pressure pulse peak value buying property raw is all higher than 10MPa, and the pressure of 0.1MPa ~ 10MPa scope to be realized, calibrating installation to be adopted
The scheme hammered into shape with secondary, and secondary hammer discharges and connects hammer and can be able to not realize automatically connecing hammer function as once hammering into shape, and without guiding,
Thus cause hammer body when hitting precise piston it is possible that probability that is eccentric and that repeatedly hit, the pressure waveform of generation and
Semisinusoidal waveform has huge difference.The pressure peak that calibration of hydraulic pressure device produces secondly as drop hammer is relatively big, even up to GPa
Rank, the calibration of hydraulic pressure apparatus structure that therefore drops hammer is complicated, and volume is heavy, should not realize field condition calibration.
Utility model content
In order to solve the problem of above-mentioned existence, this utility model provides a kind of school, Charpy wave pressure sensor scene
Standard apparatus, this calibrating installation principle based on calibration of hydraulic pressure, by pendulum clash into make compressing cylinder produce peak ranges 0.1MPa ~
The semisinusoidal pressure pulse of 10MPa, thus realize the field calibration of shock wave pressure sensor, for reaching this purpose, this practicality is new
Type provides a kind of Charpy wave pressure sensor field calibration device, school, described Charpy wave pressure sensor scene
Standard apparatus is arranged on pedestal, including motor, worm gear, worm-wheel shaft, electromagnetic clutch, rotary encoder, fork axle, pendulum
Bar, to make compressing cylinder, brake block, braking fork, eccentric, eccentric wheel sliding block, eccentric wheel handle, cam, cam slide, cam sliding
Block spring, crank, connecting rod, slide block, slider waveguide rod and sliding block spring, described motor is connected with worm shaft by shaft coupling,
The worm section of described worm shaft and axle are an entirety, and described worm shaft is by worm shaft front-end bearing pedestal and worm shaft rear bearing block
Supporting, described worm gear is arranged on worm-wheel shaft, and described worm-wheel shaft is supported by worm-wheel shaft front-end bearing pedestal and worm-wheel shaft rear bearing block,
Being also equipped with electromagnetic clutch on described worm-wheel shaft rear bearing block, the active part of described electromagnetic clutch is connected with worm-wheel shaft,
The secondary part of described electromagnetic clutch is connected with fork axle, and the pendulum shock of fork axle is made compressing cylinder generation peak ranges and existed
The semisinusoidal pressure pulse of 0.1MPa ~ 10MPa, described fork axle is supported by fork axle front-end bearing pedestal and fork axle rear bearing block,
It is also equipped with rotary encoder, described rotary encoder and fork axle on described fork axle front-end bearing pedestal to be pacified by interference fit
Being fitted together, the back segment of described fork axle is provided with fork, and the rear of described rotary encoder is provided with brake block, described braking
Block is arranged on one end of braking fork, and the other end of described braking fork is provided with eccentric wheel sliding block, and described eccentric is by propping up
Frame is arranged on below eccentric wheel sliding block, and described eccentric wheel sliding block contacts with eccentric all the time, and described eccentric side is connected with partially
Heart wheel handle, the rear of described brake block is provided with cam, is provided with cam slide base in the same side of braking fork, described
Being provided with cam slide on cam slide base, described cam slide is provided with cam slide spring, described cam slide begins
Contacting with cam eventually, the intermediate supports point of described braking fork is provided with crank, described crank is connected with connecting rod, works as song
When handle and connecting rod are non-crossing conllinear, the junction point of described crank and connecting rod and cam slide are in same level height, described company
The other end of bar is provided with slide block, and described slide block is simultaneously attached on slider waveguide rod, and installs between slide block and slider waveguide rod
Having sliding block spring, described slider waveguide rod lower end to be fixed on fixed mount, the other end of described fork makes compressing cylinder, described in make pressure
Oil cylinder is arranged on pedestal, and when sliding block spring is in free state, slide block height under sliding block spring effect is higher than making
The peak of compressing cylinder.
Further improvement of the utility model, described fork is connected with the back segment of fork axle by nut, and this practicality is new
It is connected by nut between type fork with fork axle.
Further improvement of the utility model, the rear of described cam is provided with anti-secondary impact bar, and described anti-secondary hits
Hit the axis of bar and the peak of cam and straight line that the cam center of circle is formed at grade, be mainly used in preventing fork again
Secondary shock makes compressing cylinder.
This utility model compares the existing hydraulic pressure quasistatic calibrating installation that drops hammer, a kind of pendulum that this utility model provides
The semisinusoidal pressure pulse that shock wave pressure sensor field calibration device can have generation peak ranges to be 0.1MPa ~ 10MPa.Its
Secondary, this utility model provide calibrating installation there is the function automatically and manually worked, it is possible to realize the lifting of pendulum, location,
Freely swing, prevent the functions such as secondary impact, and volume is little, light weight, convenient transport and field condition calibration.
Accompanying drawing explanation
Fig. 1 is this utility model automatic calibration structure schematic diagram；
Fig. 2 is this utility model hand brake part-structure schematic diagram；
Fig. 3 is this utility model anti-secondary impact structural representation；
Illustrate:
1, motor；2, shaft coupling；3, worm shaft front-end bearing pedestal；4, worm shaft；5, worm shaft rear bearing block；6, worm gear
Axle front-end bearing pedestal；7, worm gear；8, worm-wheel shaft；9, worm-wheel shaft rear bearing block；10, electromagnetic clutch；11, fork axle front-end bearing pedestal；
12, rotary encoder；13, fork axle；14, fork axle rear bearing block；15, fork；16, compressing cylinder is made；17, nut；18, braking
Block；19, braking fork；20, eccentric；21, eccentric wheel sliding block；22, eccentric wheel handle；23, cam；24, cam slide；25、
Cam slide spring；26, cam slide base；27, crank；28, connecting rod；29, slide block；30, slider waveguide rod；31, sliding block spring；
32, fixed mount；33, anti-secondary impact bar.
Detailed description of the invention
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings:
This utility model provides a kind of Charpy wave pressure sensor field calibration device, and this calibrating installation is based on liquid
The principle of pressure calibration, clashes into the semisinusoidal pressure pulse making compressing cylinder generation peak ranges at 0.1MPa ~ 10MPa by pendulum,
Thus realize the field calibration of shock wave pressure sensor.
This utility model specifically includes that motor 1, shaft coupling 2, worm shaft front-end bearing pedestal 3, worm screw as Figure 1-3
Axle 4, worm shaft rear bearing block 5, worm-wheel shaft front-end bearing pedestal 6, worm gear 7, worm-wheel shaft 8, worm-wheel shaft rear bearing block 9, electromagnetic clutch
10, fork axle front-end bearing pedestal 11, rotary encoder 12, fork axle 13, fork axle rear bearing block 14, fork 15, make compressing cylinder 16,
Nut 17, brake block 18, braking fork 19, eccentric 20, eccentric wheel sliding block 21, eccentric wheel handle 22, cam 23, cam slide
24, cam slide spring 25, cam slide base 26, crank 27, connecting rod 28, slide block 29, slider waveguide rod 30, sliding block spring 31,
Fixed mount 32 and anti-secondary impact bar 33.
This utility model motor 1 is connected with worm shaft 4 by shaft coupling 2, and worm shaft 4 is by worm shaft front-end bearing pedestal 3
Supporting with worm shaft rear bearing block 5, the worm section of worm shaft 4 and axle are an entirety.Worm gear 7 is arranged on worm-wheel shaft 8, snail
Wheel shaft is supported by worm-wheel shaft front-end bearing pedestal 6 and worm-wheel shaft rear bearing block 9, and worm-wheel shaft rear bearing block 9 is also equipped with electromagnetic clutch
Device 10, the active part of electromagnetic clutch 10 is connected with worm-wheel shaft 8, and secondary part is connected with fork axle 13.Fork axle is by putting
Bar axle front-end bearing pedestal 11 and fork axle rear bearing block 14 support, and are also equipped with rotary encoder 12 on fork axle front-end bearing pedestal 11,
Rotary encoder 12 and fork axle 13 use the mode of interference fit to be installed together, for the lifting angle of measuring oscillating bar 15.
The rear of rotary encoder 12 is provided with brake block 18, and brake block 18 is arranged on one end of braking fork 19, brakes the another of fork 19
One end is provided with eccentric wheel sliding block 21, and eccentric wheel sliding block 21 contacts with eccentric 20 all the time.The rear of brake block 18 is provided with
Cam 23, is provided with cam slide base 26 in the same side of braking fork 19, cam slide base is provided with cam slide
24, and cam slide spring 25 is installed on cam slide 24, the effect of cam slide spring is to make cam slide 24 all the time
Contact with cam 23.The rear of cam 23 is provided with anti-secondary impact bar 33, and the axis of anti-secondary impact bar 33 and convex
At grade, the most anti-secondary impact bar 33 points to cam 23 to the straight line that the peak of wheel 23 and the cam center of circle are formed all the time
Highest point.
This utility model is provided with crank 27 on the intermediate supports point of braking fork 19, and crank 27 is connected with connecting rod 28
Connect, and when crank 27 and connecting rod 28 are in non-crossing conllinear, the junction point of crank 27 and connecting rod 28 and cam slide 24 are same
One level height.The other end of connecting rod 28 is provided with slide block 29, and slide block 29 is simultaneously attached on slider waveguide rod 30, and slide block 29
And sliding block spring 31 is installed between slider waveguide rod 30, it is used for promoting slide block 29 to move up.The back segment of fork axle 13 is installed
Having fork 15, the axis of fork 15 and the axis of anti-secondary impact bar 33 are in the same plane.Make compressing cylinder 16 and be arranged on pedestal
On, and it is positioned at the other end of fork 15, and when sliding block spring 31 is in free state, slide block 29 is made at sliding block spring 31
Height under with is higher than the peak making compressing cylinder 16.
It is divided into two kinds of operating modes during the work of this utility model Charpy wave pressure sensor field calibration device, is respectively
Automatically calibration and manual calibration.
Automatically control electromagnetic clutch 10 by control system during calibration to close, and drive worm shaft by motor 1
4, by worm and gear deceleration system and electromagnetic clutch 10, drive fork axle 13 to rotate, thus reach to promote the mesh of fork 15
's.The lifting angle of fork 15 is obtained by rotary encoder 12.After fork 15 arrives predetermined angle, motor 1 stops
Spline is moved, and control system unclamps electromagnetic clutch 10, makes fork axle 13 and worm-wheel shaft 8 separate, and fork 15 is under gravity certainly
Made on compressing cylinder 16 by swinging and finally impinging upon, thus produced semisinusoidal pressure pulse by making compressing cylinder.Fork 15 is clashing into
Will rebound afterwards, control system reads the angle of encoder 12 in real time, when the output angle of rotary encoder 12 is by reducing greatly
To zero and when starting again to increase, electromagnetic clutch 10 is closed, owing to worm and gear deceleration system has self-locking effect, fork 15
Will not again fall after bounce-back, thus reach to prevent the purpose of secondary impact.
During manual calibration, electromagnetic clutch 10 is that this is in released state.Hand hoisting fork 15, the lifting of fork 15
Angle can be read by the angle dial being preset on shell, after fork 15 arrives predetermined angle, rotates eccentric wheel handle
22, make the geometric center of eccentric 20, center of rotation and the contact point three point on a straight line with eccentric wheel sliding block 21, form self-locking shape
State.Along with eccentric wheel sliding block 21 moves upward, brake block 18 will move downward, and act on fork axle 13, pass through frictional force
Fork axle 13 is locked.On the other hand manual rotation crank 27 so that it is with connecting rod 28 conllinear, slide block 29 moves downward, slide block bullet
Spring 31 is compressed.Due to crank 27 and connecting rod 28 conllinear, the slider-crank mechanism being made up of crank, connecting rod, slide block is in self-locking
State, slide block 29 is by position minimum for the level that is in all the time.Rotate eccentric wheel handle 22 so that brake block 18 takes off with fork axle 13
From, fork 15 freely swings under gravity and impinges upon and makes on compressing cylinder 16, thus produces semisinusoidal pressure pulse.At pendulum
During bar 15 swung downward, cam 23 also rotates down, and drives cam slide 24 to move to the direction of crank and connecting rod, works as fork
When shock makes compressing cylinder, cam slide 24 contacts with the junction point of crank and connecting rod, and makes under the effect of cam slide 24
Slider-crank mechanism departs from self-locking state, and slide block 29 moves under the effect of sliding block spring 31 rapidly upward, and now fork 15 is also
Move upward after shock.The the highest of compressing cylinder 16 is made owing to slide block 29 final height under the effect of sliding block spring 31 is higher than
Point, slide block 29 will support anti-secondary impact bar 33, prevent fork 15 from again clashing into and make compressing cylinder 16.
The above, be only preferred embodiment of the present utility model, is not that this utility model is made any other
The restriction of form, and any amendment made according to technical spirit of the present utility model or equivalent variations, still fall within this practicality new
Type scope required for protection.
Claims (3)
1. a Charpy wave pressure sensor field calibration device, school, described Charpy wave pressure sensor scene
Standard apparatus is arranged on pedestal, including motor (1), worm gear (7), worm-wheel shaft (8), electromagnetic clutch (10), rotary coding
Device (12), fork axle (13), fork (15), make compressing cylinder (16), brake block (18), braking fork (19), eccentric (20), partially
The heart wheel slide block (21), eccentric wheel handle (22), cam (23), cam slide (24), cam slide spring (25), crank (27),
Connecting rod (28), slide block (29), slider waveguide rod (30) and sliding block spring (31), it is characterised in that: described motor (1) is by connection
Axial organ (2) is connected with worm shaft (4), and the worm section of described worm shaft 4 and axle are an entirety, and described worm shaft (4) is by snail
Bar axle front-end bearing pedestal (3) and worm shaft rear bearing block (5) support, and described worm gear (7) is arranged on worm-wheel shaft (8), described worm gear
Axle (8) is supported by worm-wheel shaft front-end bearing pedestal (6) and worm-wheel shaft rear bearing block (9), and described worm-wheel shaft rear bearing block (9) also fills
Electromagnetic clutch (10), the active part of described electromagnetic clutch (10) is had to be connected with worm-wheel shaft (8), described electromagnetic clutch
(10) secondary part is connected with fork axle (13), and the pendulum shock of fork axle (13) is made compressing cylinder generation peak ranges and existed
The semisinusoidal pressure pulse of 0.1MPa ~ 10MPa, described fork axle (13) is by fork axle front-end bearing pedestal (11) and fork axle rear bearing
Seat (14) supports, and described fork axle front-end bearing pedestal (11) is also equipped with rotary encoder (12), described rotary encoder (12) and
Fork axle (13) is installed together by interference fit, and the back segment of described fork axle (13) is provided with fork (15), institute
The rear stating rotary encoder (12) is provided with brake block (18), and described brake block (18) is arranged on one end of braking fork (19),
The other end of described braking fork (19) is provided with eccentric wheel sliding block (21), and described eccentric (20) is arranged on bias by support
Wheel slide block (21) lower section, described eccentric wheel sliding block (21) contacts with eccentric (20) all the time, and described eccentric (20) side is even
There are eccentric wheel handle (22), the rear of described brake block (18) that cam (23) is installed, in the same side of braking fork (19) peace
Equipped with cam slide base (26), described cam slide base (26) is provided with cam slide (24), described cam slide
(24) being provided with cam slide spring (25) on, described cam slide (24) contacts with cam (23) all the time, described braking pendulum
Being provided with crank (27) on the intermediate supports point of bar (19), described crank (27) is connected with connecting rod (28), when crank (27) and
When connecting rod (28) is in non-crossing conllinear, the junction point of described crank (27) and connecting rod (28) and cam slide (24) are in same level
Highly, the other end of described connecting rod (28) is provided with slide block (29), and described slide block (29) is simultaneously attached on slider waveguide rod (30),
And being provided with sliding block spring (31) between slide block (29) and slider waveguide rod (30), described slider waveguide rod (30) lower end is fixed on
Determining on frame (32), the other end of described fork (15) makes compressing cylinder (16), described in make compressing cylinder (16) and be arranged on pedestal,
When sliding block spring (31) is in free state, the slide block (29) height under sliding block spring (31) acts on is higher than making compressing cylinder
(16) peak.
A kind of Charpy wave pressure sensor field calibration device the most according to claim 1, it is characterised in that: institute
State fork (15) to be connected with the back segment of fork axle (13) by nut (17).
A kind of Charpy wave pressure sensor field calibration device the most according to claim 1, it is characterised in that: institute
The rear stating cam (23) is provided with anti-secondary impact bar (33), the axis of described anti-secondary impact bar (33) and cam (23)
The straight line that peak and the cam center of circle are formed is at grade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620627531.8U CN205843882U (en) | 2016-06-22 | 2016-06-22 | A kind of Charpy wave pressure sensor field calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620627531.8U CN205843882U (en) | 2016-06-22 | 2016-06-22 | A kind of Charpy wave pressure sensor field calibration device |
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| Publication Number | Publication Date |
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| CN205843882U true CN205843882U (en) | 2016-12-28 |
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| CN201620627531.8U Active CN205843882U (en) | 2016-06-22 | 2016-06-22 | A kind of Charpy wave pressure sensor field calibration device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267373A (en) * | 2018-01-04 | 2018-07-10 | 青岛科技大学 | A kind of multi-functional coatings device for detecting performance |
| CN109000848A (en) * | 2018-10-17 | 2018-12-14 | 济南大学 | A kind of pressure sensor dynamic calibration experimental rig for steel ball cold heading |
| CN109632183A (en) * | 2019-01-22 | 2019-04-16 | 北京邮电大学 | A kind of pressure sensor calibrating experimental provision based on worm and gear |
| CN109708806A (en) * | 2018-12-26 | 2019-05-03 | 芯海科技（深圳）股份有限公司 | A kind of pressure sensitivity signal analysis device and analysis method |
| CN111998995A (en) * | 2020-09-06 | 2020-11-27 | 南京理工大学 | Buffer for quasi-static calibration of minimum-range pressure system and design method |
| CN112985685A (en) * | 2019-12-16 | 2021-06-18 | 北京振兴计量测试研究所 | Engine test bed thrust field calibration system |
| CN113267308A (en) * | 2020-02-14 | 2021-08-17 | 北京拾壹德圣科技有限公司 | High-frequency impact loading device |
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2016
- 2016-06-22 CN CN201620627531.8U patent/CN205843882U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267373A (en) * | 2018-01-04 | 2018-07-10 | 青岛科技大学 | A kind of multi-functional coatings device for detecting performance |
| CN109000848A (en) * | 2018-10-17 | 2018-12-14 | 济南大学 | A kind of pressure sensor dynamic calibration experimental rig for steel ball cold heading |
| CN109708806A (en) * | 2018-12-26 | 2019-05-03 | 芯海科技（深圳）股份有限公司 | A kind of pressure sensitivity signal analysis device and analysis method |
| CN109632183A (en) * | 2019-01-22 | 2019-04-16 | 北京邮电大学 | A kind of pressure sensor calibrating experimental provision based on worm and gear |
| CN109632183B (en) * | 2019-01-22 | 2020-06-26 | 北京邮电大学 | Pressure sensor calibration experimental device based on worm gear |
| CN112985685A (en) * | 2019-12-16 | 2021-06-18 | 北京振兴计量测试研究所 | Engine test bed thrust field calibration system |
| CN113267308A (en) * | 2020-02-14 | 2021-08-17 | 北京拾壹德圣科技有限公司 | High-frequency impact loading device |
| CN111998995A (en) * | 2020-09-06 | 2020-11-27 | 南京理工大学 | Buffer for quasi-static calibration of minimum-range pressure system and design method |
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