CN202757716U - Dynamic pre-tightened piezoelectric type force sensor for projects - Google Patents
Dynamic pre-tightened piezoelectric type force sensor for projects Download PDFInfo
- Publication number
- CN202757716U CN202757716U CN 201220334661 CN201220334661U CN202757716U CN 202757716 U CN202757716 U CN 202757716U CN 201220334661 CN201220334661 CN 201220334661 CN 201220334661 U CN201220334661 U CN 201220334661U CN 202757716 U CN202757716 U CN 202757716U
- Authority
- CN
- China
- Prior art keywords
- piezoelectric element
- contiguous block
- connection block
- sensor
- tightening
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model aims to provide a dynamic pre-tightened piezoelectric type force sensor for projects, comprising a piezoelectric element, a connection block and pre-tightening bolts, wherein the connection block comprises a first connection block and a second connection block. The two connection blocks are provided with holes which are used for installing the pre-tightening bolts. Connection screw holes which are used for connecting the legs of equipment or an installation base are arranged at the upper sides of the holes. The middle part of the piezoelectric element is provided with a pre-tightening hole which is used for installing a pre-tightening bolt. The piezoelectric element is installed between the first connection block and the second connection block through the pre-tightening hole and the pre-tightening bolt, the first connection block and the second connection block are arranged in an array shape relative to the piezoelectric element, and an L5 wire extends from the piezoelectric element. The sensor provided by the utility model is used after being integrally corrected, so the measurement value of the sensor is not changed while the installation states are changed, the shortcoming that the measurement value of a traditional annular piezoelectric sensor is changed while the rigidity and pre-tightening force of the installation bolt are changed is prevented, and the precision is greatly improved.
Description
Technical field
The utility model relates to a kind of sensor, specifically the power sensor.
Background technology
In the vibration engineering, the dynamic force that the equipment under-chassis is delivered on vibration isolator or the basis is the evaluation index of input parameter and the vibration equipment of acoustic design, to power obtain and the research of measuring technique very important.
Traditional transmission force measurement method is generally used ring piezoelectric formula power sensor or strain force sensor.Finding by literature search has 3 pieces of documents to relate to the content that equipment dynamically transmits the force measurement method.Be respectively: " dynamically force measurement is inquired into " and the master thesis " testing research of the template power sensor of exciting force " of the Zhang Siyuan of Harbin Engineering University that Central China University of Science and Technology's doctorate paper-" research of mechanical equipment vibration source characteristic test method ", " Shandong Polytechnic Univ's journal " are stepped at 1 periodical in 1984.All use the single-sensor method mensuration of traditional piezoelectric type annular power sensor in front two pieces of documents, under equipment rigidity mounting condition, generally a ring piezoelectric formula power sensor is connected between equipment under-chassis and the basis, under the elasticity mounting condition, generally a ring piezoelectric formula power sensor is connected between equipment under-chassis and the vibration isolator; In fact, under this installment state, the power that the equipment under-chassis is delivered on vibration isolator or the basis is transmitted by two paths, article one, be the equipment under-chassis through the power sensor passes on vibration isolator or basis, article one, being delivered to erection bolt by the equipment under-chassis is delivered on vibration isolator or the basis again, sensor only can measure the power through its transmission, can't measure the power of transmitting through bolt, it is generally acknowledged that Li Keda by the bolt transmission makes a concerted effort 10% ~ 30%, sensor only can measure 70% ~ 90%, and measuring error is larger.Also mention strain force sensor in second piece of document, it is little that strain force sensor is measured frequency band, only can survey low frequency, and easily change the impedance operator of system's vibration isolation, and the dynamic force measurement to high band also has requirement in the engineering, does not wish to change the impedance operator of vibrating isolation system.Designed a kind of template prefastening power sensor in the paper of Zhang Siyuan, attempt to address the above problem, but the sensor mass volume of its design is larger, and 4 mounting points are arranged respectively up and down, be difficult to during installation guarantee that 4 points are at same plane, this will cause the sensor measurement axis to be not orthogonal to installed surface, the actual comparatively difficulty of using still.
Summary of the invention
The purpose of this utility model is to provide a kind of engineering of having overcome the shortcoming that traditional endless piezoelectric sensor measured value changes with installment state with dynamic prefastening piezo-electric type power sensor.
The purpose of this utility model is achieved in that
A kind of engineering of the utility model is with dynamic prefastening piezo-electric type power sensor, it is characterized in that: comprise piezoelectric element, contiguous block, pretension bolt, contiguous block comprises the first contiguous block and the second contiguous block, the hole that is provided for installing pretension bolt on two contiguous blocks, the top, hole is provided for the connection device under-chassis or the connecting screw hole on basis is installed, be provided for installing the pre-tieholen of pretension bolt in the middle of the piezoelectric element, piezoelectric element is by pre-tieholen, pretension bolt is installed between the first contiguous block and the second contiguous block, the first contiguous block and the second contiguous block are with respect to piezoelectric element layout poised for battle, and piezoelectric element is drawn the L5 line.
The utility model can also comprise:
1, described contiguous block is that xsect is hexagonal body hexagonal, core hollow.
Advantage of the present utility model is: use behind the utility model sensor piece calibration, its measured value does not change with the variation of installment state, avoided the shortcoming of traditional endless piezoelectric sensor measured value with erection bolt rigidity and pretightning force size variation, precision improves greatly.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is vertical view of the present utility model;
Fig. 3 is engineering example figure of the present utility model.
Embodiment
For example the utility model is described in more detail below in conjunction with accompanying drawing:
In conjunction with Fig. 1～3, the utility model mainly is comprised of four parts, comprise contiguous block 2, annular piezoelectric element 4, contiguous block 5 and pretension bolt 3, wherein on contiguous block 2 and the contiguous block 5 the engineering connecting thread is arranged, be connected with equipment under-chassis 8 and basis 11 respectively, and contiguous block 2 is sexangle with contiguous block 5, be convenient to installing/dismounting, contiguous block 2, annular piezoelectric element 4 and contiguous block 5 carry out pretension by pretension bolt 3, the screw thread of pretension bolt 3 is locking with screw thread glue during pretension, annular piezoelectric element 4 adopts the traditional approach encapsulation, and electric charge is exported by the L5 line.Although also being two paths, the utility model inside transmits power, a part is transmitted through pretension bolt 3, another part transmits through piezoelectric element 4, although piezoelectric element 4 itself can only measure a part of exciting force, but the sensitivity of sensor is revised behind the piece calibration, the sensitivity of this moment is the sensitivity of whole sensor but not the sensitivity of piezoelectric element can be measured the whole dynamic force through whole sensor passes, and measuring error is little.
Engineering example:
When the utility model used, the lower end was connected with basis 11 or vibration isolator with stud bolt 10, and the upper end also links to each other with equipment under-chassis 8 with stud bolt 7; The stud bolt 10 that first installation is connected with basis 11 or vibration isolator can utilize the hexagonal design of sensor 9 lower ends to install this moment, and it is identical with the lower end installation that install the upper end, can not destroy the pretension of sensor 9 in the installation.Use through engineering, error of the present utility model is generally less than 5%, has overcome the shortcoming of two paths power transmissions during traditional sensors is measured.
Claims (2)
1. an engineering is with dynamic prefastening piezo-electric type power sensor, it is characterized in that: comprise piezoelectric element, contiguous block, pretension bolt, contiguous block comprises the first contiguous block and the second contiguous block, the hole that is provided for installing pretension bolt on two contiguous blocks, the top, hole is provided for the connection device under-chassis or the connecting screw hole on basis is installed, be provided for installing the pre-tieholen of pretension bolt in the middle of the piezoelectric element, piezoelectric element is by pre-tieholen, pretension bolt is installed between the first contiguous block and the second contiguous block, the first contiguous block and the second contiguous block are with respect to piezoelectric element layout poised for battle, and piezoelectric element is drawn the L5 line.
2. a kind of engineering according to claim 1 is with dynamic prefastening piezo-electric type power sensor, and it is characterized in that: described contiguous block is that xsect is hexagonal body hexagonal, core hollow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220334661 CN202757716U (en) | 2012-07-11 | 2012-07-11 | Dynamic pre-tightened piezoelectric type force sensor for projects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220334661 CN202757716U (en) | 2012-07-11 | 2012-07-11 | Dynamic pre-tightened piezoelectric type force sensor for projects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202757716U true CN202757716U (en) | 2013-02-27 |
Family
ID=47736888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220334661 Expired - Fee Related CN202757716U (en) | 2012-07-11 | 2012-07-11 | Dynamic pre-tightened piezoelectric type force sensor for projects |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202757716U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735377A (en) * | 2012-07-11 | 2012-10-17 | 哈尔滨工程大学 | Dynamic pre-tightened piezoelectric type force sensor for projects |
| CN105865665A (en) * | 2016-03-28 | 2016-08-17 | 北京理工大学 | Method and apparatus for measuring pre-tensioning force of flared fitting |
-
2012
- 2012-07-11 CN CN 201220334661 patent/CN202757716U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735377A (en) * | 2012-07-11 | 2012-10-17 | 哈尔滨工程大学 | Dynamic pre-tightened piezoelectric type force sensor for projects |
| CN105865665A (en) * | 2016-03-28 | 2016-08-17 | 北京理工大学 | Method and apparatus for measuring pre-tensioning force of flared fitting |
| CN105865665B (en) * | 2016-03-28 | 2019-01-29 | 北京理工大学 | A kind of the preload force measuring method and device of flared fitting |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102735377A (en) | Dynamic pre-tightened piezoelectric type force sensor for projects | |
| CN102853958B (en) | Six-axis force sensor of bicycle pedal | |
| CN202970689U (en) | Oil well indictor diagram acquisition device | |
| CN202757716U (en) | Dynamic pre-tightened piezoelectric type force sensor for projects | |
| CN203337352U (en) | Eddy current sensor multi-channel dynamic calibration device | |
| CN202074949U (en) | Adjustable large displacement measure optical fiber grating sensor apparatus | |
| CN204202812U (en) | The caliberating device of simple and easy force cell | |
| CN204202792U (en) | A kind of Novel ultrasonic dynamo dynamometer machine | |
| CN204924609U (en) | Wind pressure is measured to pass and is pressed pipe characteristic calibration device | |
| CN102735373A (en) | Indirect measurement method of transmission force of vibration isolator | |
| CN202057439U (en) | Clamp force testing sensor | |
| CN202372115U (en) | Involute internal spline length bar span (M value) gauge | |
| CN104180853A (en) | Mine surrounding rock multi-parameter coupling measuring device | |
| CN203132450U (en) | Aperture plug gauge | |
| US20140208876A1 (en) | Sensors with modular threaded packaging | |
| CN201421329Y (en) | Displacement transducer calibration device | |
| CN102735376B (en) | Method for measuring dynamic transfer force of device leg | |
| CN203350148U (en) | Ultrasonic torsional displacement calibration device | |
| CN203414347U (en) | Rigidity detecting device | |
| CN203720018U (en) | Clamp for testing room temperature compression stress and strain curve of porous material | |
| CN103512458A (en) | Device for testing taper cylinder sleeve | |
| CN202709944U (en) | Comprehensive gauge used for measuring shape and position error of serial tapered hole | |
| CN204730977U (en) | The pressure unit for electrical stability can be promoted | |
| CN203615866U (en) | Tool for measuring hole distance of generator main shaft connecting hole | |
| CN204788766U (en) | Pressure transmitter |
Legal Events
| 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: 20130227 Termination date: 20150711 |
|
| EXPY | Termination of patent right or utility model |