CN109374202A - A kind of fluid pressure type power calibrating installation - Google Patents
A kind of fluid pressure type power calibrating installation Download PDFInfo
- Publication number
- CN109374202A CN109374202A CN201811341110.9A CN201811341110A CN109374202A CN 109374202 A CN109374202 A CN 109374202A CN 201811341110 A CN201811341110 A CN 201811341110A CN 109374202 A CN109374202 A CN 109374202A
- Authority
- CN
- China
- Prior art keywords
- piston
- pivoted housing
- cylinder body
- piston pivoted
- sealing ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009434 installation Methods 0.000 title claims abstract description 21
- 239000012530 fluid Substances 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 10
- 230000003068 static effect Effects 0.000 abstract description 4
- 239000010720 hydraulic oil Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
- G01L27/002—Calibrating, i.e. establishing true relation between transducer output value and value to be measured, zeroing, linearising or span error determination
- G01L27/005—Apparatus for calibrating pressure sensors
Abstract
The present invention relates to a kind of fluid pressure type power calibrating installations, including loaded cylinder, loaded cylinder includes cylinder body and piston, hydraulic oil pressure force detection sensor is provided on the cylinder body, the loaded cylinder further includes rolling assembling in the piston pivoted housing on the cylinder body, piston pivoted housing and cylinder body sealing cooperate, and the piston seal is threaded onto the inner hole of the piston pivoted housing, and piston is rotatably assorted with piston pivoted housing.When being calibrated to press machine, this pressure calibration device is placed on the downside of the head of press machine, head downlink applies pressure to the piston of this pressure calibration device, in calibration process, rotate piston pivoted housing opposing pistons and cylinder body, stiction is not present between piston and piston pivoted housing and piston pivoted housing and cylinder body, therefore avoids the fluctuation that stiction generates calibration in calibration process, the rotation of piston pivoted housing counteracts influence of the static friction factor to calibration.
Description
Technical field
The present invention relates to the fluid pressure type power calibrating installations in pressure calibration field.
Background technique
In pressure calibration field, need regularly to calibrate the output pressure of press machine, existing power calibrating installation
There are many, the characteristics of one of which is strain gauge pressure sensor, this kind of pressure sensor, is that calibration accuracy is higher, the disadvantage is that
Strained deformation influences, reference range substantially in 2000T hereinafter, and be more than in existing equipment 2000T press device
Also relatively common, such as the press machine of 6000T, if using strain gauge pressure sensor, it is necessary to while using multiple
Strain gauge pressure sensor, calibration process is complicated and calibrates higher cost；Another power calibrating installation is fluid pressure type power school
Standard apparatus comprising there is the loaded cylinder of piston and cylinder body, pressure sensor is provided on cylinder body, in use, press machine is direct
Pressure is applied to the piston of loaded cylinder, press machine is calibrated by pressure sensor, the characteristics of this kind of pressure calibrator
Be: loaded cylinder, which can be realized, calibrates large-tonnage, but in calibration process, it is relatively quiet between the piston and piston cylinder of loaded cylinder
Only, the frictional force between the two is static friction relationship, and the characteristic of stiction is: stiction is the power of a variation, living
From stress is started during stress terminates to the end, stiction can change always and lead to the indicating value of pressure sensor always plug
Fluctuation, this can produce bigger effect calibration process, therefore existing this kind of fluid pressure type power calibrating installation is only used for school substantially
It is used in the not high environment of quasi- required precision.
Summary of the invention
The purpose of the present invention is to provide a kind of fluid pressure type power calibrating installation, with solve piston in the prior art and cylinder body it
Between stiction can make pressure sensor indicating value fluctuate the problem of.
In order to solve the above technical problems, technical scheme is as follows:
A kind of fluid pressure type power calibrating installation, including loaded cylinder, loaded cylinder include cylinder body and piston, are provided on the cylinder body hydraulic
Oil pressure force detection sensor, the loaded cylinder further include rolling assembling in the piston pivoted housing on the cylinder body, piston pivoted housing and institute
Cylinder body sealing cooperation is stated, the piston seal is threaded onto the inner hole of the piston pivoted housing, and piston is rotatably assorted with piston pivoted housing.
Being cooperated between piston and piston pivoted housing by the sealing of the first sealing ring, pass through between piston pivoted housing and the cylinder body
The sealing cooperation of second sealing ring.
The inner hole wall of the piston pivoted housing offers piston pivoted housing sealing ring mounting groove, and the first sealing ring is installed on the work
It fills in pivoted housing sealing ring mounting groove；Cylinder body sealing ring mounting groove, the second sealing ring installation are offered on the inboard wall of cylinder block
In the cylinder body sealing ring mounting groove.
Fluid pressure type power calibrating installation further includes being sequentially connected with the piston pivoted housing to drive piston pivoted housing opposing pistons, cylinder
The piston pivoted housing driving mechanism of body rotation.
Piston pivoted housing upper end turn up have on the upside of cylinder body it is outer turn edge, cylinder body and it is described it is outer turn edge between be provided with
Angular contact ball bearing is provided with axial force detection sensor between hinge contact ball bearing and the cylinder body.
The invention has the benefit that this pressure calibration device is placed in press machine when calibrating to press machine
On the downside of head, head downlink applies pressure to the piston of this pressure calibration device, in calibration process, keeps piston pivoted housing opposite
Piston and cylinder body rotation, are not present stiction, therefore avoid between piston and piston pivoted housing and piston pivoted housing and cylinder body
The fluctuation that stiction generates calibration in calibration process, the rotation of piston pivoted housing counteract static friction factor to the shadow of calibration
It rings.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the present of invention；
Fig. 2 is the structural schematic diagram of piston pivoted housing in Fig. 1.
Specific embodiment
A kind of embodiment 1 of fluid pressure type power calibrating installation is as shown in Figure 1 and 2: including loaded cylinder, loaded cylinder includes 9 He of cylinder body
Piston 1 is provided with the hydraulic oil pressure force detection sensor 14 for detecting hydraulic fluid pressure in cylinder body on cylinder body.Fluid pressure type power school
Standard apparatus further include can opposing cylinder and piston rotation piston pivoted housing 2,2 rolling assembling of piston pivoted housing is on cylinder body, and piston
Pivoted housing is cooperated by the second sealing ring 8 and cylinder body sealing, and for 1 rolling assembling of piston in the inner hole of piston pivoted housing 2, piston passes through the
One sealing ring 7 cooperates with the sealing of piston pivoted housing 2.In the present embodiment, the inner hole wall of piston pivoted housing offers piston pivoted housing sealing ring
Mounting groove, the first sealing ring 7 are installed in piston pivoted housing sealing ring mounting groove；The installation of cylinder body sealing ring is offered on inboard wall of cylinder block
Slot, the second sealing ring 8 are installed in the cylinder body sealing ring mounting groove.
2 upper end of piston pivoted housing turn up have it is outer turn edge 3, cylinder body and be provided with angular contact ball bearing 11, corner connection between turning edge outside
It is provided with axial force detection sensor 5 between touching ball bearing 11 and cylinder body, angular contact ball bearing may be implemented to piston pivoted housing
Axial position and radial position constraint, in the detection process, the numerical value of axial force detection sensor is stable, it was demonstrated that gram
It has taken caused by stiction is unstable in the prior art and has calibrated fluctuation problem.Fluid pressure type power calibrating installation further includes and piston
Piston pivoted housing driving mechanism of the pivoted housing transmission connection to drive piston pivoted housing opposing pistons, cylinder body to rotate, piston pivoted housing driving machine
Structure includes the driving motor 13 that motor shaft is vertically arranged, and pinion gear 12 is provided on the motor shaft of driving motor, piston pivoted housing
Turn up circumferentially be provided with pinion gear engaged transmission gear wheel, gear wheel, pinion gear tooth be straight-tooth.
When calibrating to press machine, this power calibrating installation is placed in the downside of the head of press machine, head downlink pair
Piston force, driving motor driving piston pivoted housing opposing pistons, cylinder body are rotated with 10 ~ 20 turns of speed per minute, piston pivoted housing
Rotation therefore avoided because stiction is unstable, Yi Bo so that there is no static friction to act between piston pivoted housing and piston
Moving influences to calibration bring, improves the precision of pressure calibration device, can be adapted for the school more demanding to calibration accuracy
It is used in quasi, such as in the calibration of 6000T press machine, the pressure calibration device in the present invention can also be applied certainly
It is calibrated on the press machine of small tonnage.
Other implement of the invention: angular contact ball bearing can not also be set；Axial force detection sensor can also be with
It does not set；V belt translation, certain piston pivoted housing can also be passed through between driving motor and piston pivoted housing in piston pivoted housing driving mechanism
Driving mechanism can not also be set, and at this time at the beginning of calibration, can apply rotation torque to piston pivoted housing manually, in calibration process
In, piston pivoted housing is voluntarily rotated by inertia；Second sealing ring, the first sealing ring can not also be set, and piston and piston turn at this time
Sealing between set, piston pivoted housing and cylinder body can be realized by cooperation precision.
Claims (5)
1. a kind of fluid pressure type power calibrating installation, including loaded cylinder, loaded cylinder includes cylinder body and piston, is provided with liquid on the cylinder body
Oil pressure detection sensor, it is characterised in that: the loaded cylinder further includes rolling assembling in the piston pivoted housing on the cylinder body,
Piston pivoted housing and cylinder body sealing cooperate, and the piston seal is threaded onto the inner hole of the piston pivoted housing, piston and piston
Pivoted housing is rotatably assorted.
2. fluid pressure type power calibrating installation according to claim 1, it is characterised in that: passing through between piston and piston pivoted housing
The sealing cooperation of first sealing ring passes through the sealing cooperation of the second sealing ring between piston pivoted housing and the cylinder body.
3. fluid pressure type power calibrating installation according to claim 2, it is characterised in that: the inner hole wall of the piston pivoted housing opens up
There is piston pivoted housing sealing ring mounting groove, the first sealing ring is installed in the piston pivoted housing sealing ring mounting groove；In the cylinder body
Cylinder body sealing ring mounting groove is offered on wall, second sealing ring is installed in the cylinder body sealing ring mounting groove.
4. fluid pressure type power calibrating installation according to claim 1, it is characterised in that: fluid pressure type power calibrating installation further include with
Piston pivoted housing driving mechanism of the piston pivoted housing transmission connection to drive piston pivoted housing opposing pistons, cylinder body to rotate.
5. fluid pressure type power calibrating installation described in any one according to claim 1 ~ 4, it is characterised in that: on the piston pivoted housing
End turn up have on the upside of cylinder body it is outer turn edge, cylinder body and it is described it is outer turn edge between be provided with angular contact ball bearing, hinge contact ball
Axial force detection sensor is provided between bearing and the cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811341110.9A CN109374202A (en) | 2018-11-12 | 2018-11-12 | A kind of fluid pressure type power calibrating installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811341110.9A CN109374202A (en) | 2018-11-12 | 2018-11-12 | A kind of fluid pressure type power calibrating installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109374202A true CN109374202A (en) | 2019-02-22 |
Family
ID=65384811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811341110.9A Pending CN109374202A (en) | 2018-11-12 | 2018-11-12 | A kind of fluid pressure type power calibrating installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109374202A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578382A (en) * | 2018-11-12 | 2019-04-05 | 河南交院工程技术有限公司 | A kind of hydraulic loading device |
| CN112484914A (en) * | 2020-10-30 | 2021-03-12 | 南京理工大学 | Quasi-static air pressure calibration device of minimum range pressure system and design method |
| CN112834112A (en) * | 2021-01-04 | 2021-05-25 | 郑州东辰科技有限公司 | Force standard device and hydraulic bearing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0075847A2 (en) * | 1981-09-25 | 1983-04-06 | A. M. Erichsen GmbH | Hydraulic device for generating a normalised force |
| CN102175387A (en) * | 2011-01-21 | 2011-09-07 | 吉林大学 | Rolling friction cylinder hydraulic type force standard machine |
| CN102175389A (en) * | 2011-02-21 | 2011-09-07 | 吉林大学 | Rolling friction piston pressure gauge |
| CN206874592U (en) * | 2017-03-21 | 2018-01-12 | 深圳跬步动力科技有限公司 | A kind of hydraulic servo oil cylinder |
| CN208872462U (en) * | 2018-11-12 | 2019-05-17 | 河南交院工程技术有限公司 | A kind of fluid pressure type power calibrating installation and hydraulic loading device |
-
2018
- 2018-11-12 CN CN201811341110.9A patent/CN109374202A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0075847A2 (en) * | 1981-09-25 | 1983-04-06 | A. M. Erichsen GmbH | Hydraulic device for generating a normalised force |
| CN102175387A (en) * | 2011-01-21 | 2011-09-07 | 吉林大学 | Rolling friction cylinder hydraulic type force standard machine |
| CN102175389A (en) * | 2011-02-21 | 2011-09-07 | 吉林大学 | Rolling friction piston pressure gauge |
| CN206874592U (en) * | 2017-03-21 | 2018-01-12 | 深圳跬步动力科技有限公司 | A kind of hydraulic servo oil cylinder |
| CN208872462U (en) * | 2018-11-12 | 2019-05-17 | 河南交院工程技术有限公司 | A kind of fluid pressure type power calibrating installation and hydraulic loading device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578382A (en) * | 2018-11-12 | 2019-04-05 | 河南交院工程技术有限公司 | A kind of hydraulic loading device |
| CN109578382B (en) * | 2018-11-12 | 2024-04-05 | 河南交院工程技术集团有限公司 | Hydraulic loading device |
| CN112484914A (en) * | 2020-10-30 | 2021-03-12 | 南京理工大学 | Quasi-static air pressure calibration device of minimum range pressure system and design method |
| CN112484914B (en) * | 2020-10-30 | 2022-04-19 | 南京理工大学 | Quasi-static air pressure calibration device of minimum range pressure system and design method |
| CN112834112A (en) * | 2021-01-04 | 2021-05-25 | 郑州东辰科技有限公司 | Force standard device and hydraulic bearing device |
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