CN208206022U - A kind of LVDT displacement sensor is performance test bed - Google Patents
A kind of LVDT displacement sensor is performance test bed Download PDFInfo
- Publication number
- CN208206022U CN208206022U CN201820951675.8U CN201820951675U CN208206022U CN 208206022 U CN208206022 U CN 208206022U CN 201820951675 U CN201820951675 U CN 201820951675U CN 208206022 U CN208206022 U CN 208206022U
- Authority
- CN
- China
- Prior art keywords
- sensor
- block
- displacement sensor
- lvdt displacement
- test
- 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.)
- Active
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
It is performance test bed that the utility model provides a kind of LVDT displacement sensor, including accuracy test device comprising the straight line slide unit being installed below fixing rack for sensor is connected with lower test block on the sliding block of straight line slide unit；The upper end of lower test block is removably connected with sensor mandrel fixed block by grip slipper；Lower test block is equipped with dial gauge away from the side of fixing rack for sensor, and the gauge head of dial gauge and the side wall of lower test block offset；Fatigue tester comprising test motor is tested and is equipped with cam on the output shaft of motor, connecting rod, connecting rod and the universal connection of sensor mandrel fixed block are hinged on the end wall of cam.LVDT displacement sensor described in the utility model is performance test bed, accuracy test device and fatigue tester are combined, only being loaded for a LVDT displacement sensor, which need to be carried out, can carry out the test of two projects, while guaranteeing detection accuracy, the time for saving test, effectively raise testing efficiency.
Description
Technical field
The utility model belongs to sensor testing apparatus field, more particularly, to a kind of LVDT displacement sensor performance test
Platform.
Background technique
LVDT is linear variable difference transformer abbreviation, and working principle is briefly the movable transformer of iron core.It is by one
The components such as a primary coil, two secondary coils, iron core, coil rack, shells composition.When iron core is mobile from centre to both sides
When, the difference of secondary two coil output voltages and iron core movement are linear.
LVDT displacement sensor has the characteristics that fast response time, low noise, mechanical life length, high sensitivity.Just because of
LVDT displacement sensor has the characteristics that these, and performance test project when dispatching from the factory is also more, according to distinct device to difference
Characteristic is tested, and needs to repeat the LVDT displacement sensor that is loaded, time-consuming and laborious, efficiency is lower.
Utility model content
In view of this, to be directed to a kind of LVDT displacement sensor performance test bed for the utility model, to solve existing skill
In art, need to carry out disparity items test to LVDT displacement sensor using distinct device, and caused by the lower problem of efficiency.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of LVDT displacement sensor is performance test bed, including bottom plate, the upper end are fixed with fixing rack for sensor；Precision is surveyed
Try device comprising the straight line slide unit being installed below fixing rack for sensor is connected with lower test block on the sliding block of straight line slide unit；Under
The upper end of test block is removably connected with sensor mandrel fixed block by grip slipper；Lower test block deviates from fixing rack for sensor
Side be equipped with dial gauge, dial gauge is installed on bottom plate by dial framework, and the side wall phase of the gauge head of dial gauge and lower test block
It supports；Fatigue tester comprising be fixed on the motor rack of bottom plate upper end, the upper end of motor rack is equipped with test motor；Test electricity
Cam is installed on the output shaft of machine, connecting rod, connecting rod and the universal connection of sensor mandrel fixed block are hinged on the end wall of cam；
Signal processor is fixed on the side wall of fixing rack for sensor, and is connect with computer.
Further, the straight line slide unit is ballscrew type straight line slide unit.
Further, the upper end of the lower test block is fixed with upper rail, the extending direction of upper rail and the row of straight line slide unit
Cheng Fangxiang is vertical；The grip slipper includes two grip blocks being slidably connected with upper rail, and two grip blocks move towards；Institute
Sensor mandrel fixed block is stated between two grip blocks.
Further, two grip blocks respectively with Bidirectional-screw spiral marking connection, and one end of Bidirectional-screw equipped with hand twist
Handle.
Further, the grip block is equipped with tapered protrusion close to the side wall of the sensor mandrel fixed block；Sensor
The side wall of mandrel fixed block is equipped with taper hole corresponding with tapered protrusion, and the depth of taper hole is less than the height of tapered protrusion.
Further, the lower end of the sensor mandrel fixed block is embedded with several steel balls.
Further, the end of the connecting rod is ball head structure, and can with the ball bowl hole on the sensor mandrel fixed block
Dismantling connection.
Further, bowl-shape nylon bush is fixed in ball bowl hole.
Compared with the existing technology, LVDT displacement sensor described in the utility model is performance test bed has the advantage that
LVDT displacement sensor described in the utility model is performance test bed, and structure is simple, easy to use.By accuracy test
Device and fatigue tester combine, and only need to carry out being loaded for a LVDT displacement sensor can carry out the test of two projects,
While guaranteeing detection accuracy, the time of test is saved, testing efficiency is effectively raised.Using straight line slide unit and
Dial gauge matches to control the moving distance of sensor mandrel, while guaranteeing measuring accuracy, reduces the utility model
Operation difficulty.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.?
In attached drawing:
Fig. 1 is the performance test bed main view of LVDT displacement sensor described in the utility model embodiment；
Fig. 2 is the vertical view of the performance test bed lower test block of LVDT displacement sensor described in the utility model embodiment
Figure.
Description of symbols:
1- bottom plate；2- straight line slide unit；201- sliding block；Test block under 3-；4- dial framework；5- dial gauge；6- motor rack；7- test
Motor；8- cam；9- connecting rod；10- sensor mandrel fixed block；1001- ball bowl hole；11- grip block；1101- tapered protrusion；
12- sensor mandrel；13-LVDT displacement sensor；14- signal processor；The bowl-shape nylon bush of 15-；16- upper rail；17- is bis-
To screw rod；18- fixing rack for sensor.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For limitations of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more of the features.It is in the description of the present invention, unless another
It is described, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State the concrete meaning of term in the present invention.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
Such as Fig. 1-2, the utility model proposes a kind of LVDT displacement sensor is performance test bed, including bottom plate 1, the upper end is solid
Surely there is fixing rack for sensor 18；Accuracy test device comprising be installed on the straight line slide unit 2 of 18 lower section of fixing rack for sensor, straight line
Lower test block 3 is connected on the sliding block 201 of slide unit 2；The upper end of lower test block 3 is removably connected with sensor by grip slipper
Mandrel fixed block 10；Lower test block 3 is equipped with dial gauge 5 away from the side of fixing rack for sensor 18, and dial gauge 5 is pacified by dial framework 4
Loaded on bottom plate 2, and the gauge head of dial gauge 5 and the side wall of lower test block 3 offset；Fatigue tester comprising be fixed on bottom plate 1
The motor rack 6 of upper end, the upper end of motor rack 6 are equipped with test motor 7；It tests on the output shaft of motor 7 and cam 8 is installed, it is convex
Connecting rod 9, connecting rod 9 and the universal connection of sensor mandrel fixed block 10 are hinged on the end wall of wheel 8；Signal processor 14, is fixed
In on the side wall of fixing rack for sensor 18, and it is connect with computer.
Above-mentioned straight line slide unit 2 is ballscrew type straight line slide unit.
The upper end of above-mentioned lower test block 3 is fixed with upper rail 16, the extending direction of upper rail 16 and the stroke of straight line slide unit 2
Direction is vertical；Above-mentioned grip slipper includes two grip blocks being slidably connected with upper rail 16 11, and two grip blocks 11 move in opposite directions
It is dynamic；The sensor mandrel fixed block 10 is located between two grip blocks 11.
Two above-mentioned grip blocks 11 respectively with 17 spiral marking connection of Bidirectional-screw, and one end of Bidirectional-screw 17 be equipped with hand twist handle
Hand.
Above-mentioned grip block 11 is equipped with tapered protrusion 1101 close to the side wall of the sensor mandrel fixed block 10；Sensor
The side wall of mandrel fixed block 10 is equipped with taper hole corresponding with tapered protrusion 1101, and the depth of taper hole is less than tapered protrusion
1101 height.
The lower end of the sensor mandrel fixed block 10 is embedded with several steel balls.The structure helps to reduce sensor mandrel
Frictional force between fixed block 10 and lower test block 3.
The end of above-mentioned connecting rod 9 is ball head structure, and can with the ball bowl hole 1001 on the sensor mandrel fixed block 10
Dismantling connection.
Bowl-shape nylon bush 15 is fixed in above-mentioned ball bowl hole 1001.
In use, first LVDT displacement sensor 13 to be measured is fixedly installed on fixing rack for sensor 18, sensor core
Axis 12 and sensor mandrel fixed block 10 are fixed.In addition, by the signal connecting line and signal processor of LVDT displacement sensor 13
14 (signal processor 14 includes sensor signal processing circuit and power supply) connections.
When needing to test the precision of LVDT displacement sensor 13, rotation Bidirectional-screw 17 will be until two grip blocks 11 will pass
Sensor mandrel fixed block 10 clamps.At this point, lower test block 3 becomes an entirety with sensor mandrel fixed block 10.Start straight line
Slide unit 2, sliding block 201 drive lower test block 3 and the horizontal sliding of sensor mandrel fixed block 10, observe the reading of dial gauge 5 to sentence
Disconnected sliding distance is recorded after adjusting distance by the data that computer software reading signal processor 14 is issued, institute
After having test point record end, it can be analyzed and be handled accordingly, finally obtain test result.
When needing to test the mechanical fatigue limit of LVDT displacement sensor 13, two-way lead screw 17 is reversely rotated, makes two
Grip block 11 is separated with sensor mandrel fixed block 10, until two tapered protrusions 1101 exit sensor mandrel fixed block completely
Until taper hole on 10.The bulb end of connecting rod 9 is inserted into bowl-shape nylon bush 15, connecting rod 9 is completed and sensor mandrel is solid
Determine the universal connection of block 10.Starting test motor 7, test motor 7 are rotated with moving cam 8；Simultaneously under the drive of connecting rod 9, pass
Sensor mandrel fixed block 10 drives sensor mandrel 12 is constantly flexible to move back and forth.When complete as defined in number after, according to
The above process measures the precision of LVDT displacement sensor 13, test result that you can get it.
LVDT displacement sensor described in the utility model is performance test bed, and structure is simple, easy to use.By accuracy test
Device and fatigue tester combine, and only need to carry out being loaded for a LVDT displacement sensor 13 can carry out the survey of two projects
Examination, while guaranteeing measuring accuracy, saves time, effectively raises testing efficiency.Using straight line slide unit 2 and hundred
Divide table 5 to match to control the moving distance of sensor mandrel 12, while guaranteeing measuring accuracy, reduces the utility model
Operation difficulty.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (8)
1. a kind of LVDT displacement sensor is performance test bed characterized by comprising
Bottom plate (1), the upper end are fixed with fixing rack for sensor (18)；
Accuracy test device comprising the straight line slide unit (2) being installed below fixing rack for sensor (18), the cunning of straight line slide unit (2)
Lower test block (3) are connected on block (201)；The upper end of lower test block (3) is removably connected with sensor core by grip slipper
Axis fixed block (10)；Lower test block (3) is equipped with dial gauge (5) away from the side of fixing rack for sensor (18), and dial gauge (5) passes through
Dial framework (4) is installed on bottom plate (1), and the gauge head of dial gauge (5) and the side wall of lower test block (3) offset；
Fatigue tester comprising be fixed on the motor rack (6) of bottom plate (1) upper end, the upper end of motor rack (6) is equipped with test electricity
Machine (7)；It tests on the output shaft of motor (7) and is equipped with cam (8), be hinged on the end wall of cam (8) connecting rod (9), connecting rod (9)
With sensor mandrel fixed block (10) universal connection；
Signal processor (14), is fixed on the side wall of fixing rack for sensor (18), and connect with computer.
2. LVDT displacement sensor according to claim 1 is performance test bed, it is characterised in that: the straight line slide unit (2)
For ballscrew type straight line slide unit.
3. LVDT displacement sensor according to claim 2 is performance test bed, it is characterised in that: the lower test block (3)
Upper end be fixed with upper rail (16), the extending direction of upper rail (16) is vertical with the stroke directions of straight line slide unit (2)；The folder
Holding seat includes two grip blocks (11) being slidably connected with upper rail (16), and two grip blocks (11) move towards；The biography
Sensor mandrel fixed block (10) is located between two grip blocks (11).
4. LVDT displacement sensor according to claim 3 is performance test bed, it is characterised in that: two grip blocks
(11) respectively with Bidirectional-screw (17) spiral marking connection, and one end of Bidirectional-screw (17) be equipped with hand twist handle.
5. LVDT displacement sensor according to claim 3 or 4 is performance test bed, it is characterised in that: the grip block
(11) tapered protrusion (1101) are equipped with close to the side wall of the sensor mandrel fixed block (10)；Sensor mandrel fixed block
(10) side wall is equipped with taper hole corresponding with tapered protrusion (1101), and the depth of taper hole is less than tapered protrusion (1101)
Highly.
6. LVDT displacement sensor according to claim 5 is performance test bed, it is characterised in that: the sensor mandrel is solid
The lower end of block (10) is determined embedded with several steel balls.
7. LVDT displacement sensor according to claim 6 is performance test bed, it is characterised in that: the end of the connecting rod (9)
Portion is ball head structure, and is detachably connected with the ball bowl hole (1001) on the sensor mandrel fixed block (10).
8. LVDT displacement sensor according to claim 7 is performance test bed, it is characterised in that: ball bowl hole (1001)
Inside it is fixed with bowl-shape nylon bush (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820951675.8U CN208206022U (en) | 2018-06-20 | 2018-06-20 | A kind of LVDT displacement sensor is performance test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820951675.8U CN208206022U (en) | 2018-06-20 | 2018-06-20 | A kind of LVDT displacement sensor is performance test bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208206022U true CN208206022U (en) | 2018-12-07 |
Family
ID=64496730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820951675.8U Active CN208206022U (en) | 2018-06-20 | 2018-06-20 | A kind of LVDT displacement sensor is performance test bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208206022U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813207A (en) * | 2019-03-18 | 2019-05-28 | 中国重汽集团大同齿轮有限公司 | A kind of AMT position sensor temperature drift test platform and its correction of temperature drift method |
| CN110907092A (en) * | 2020-01-17 | 2020-03-24 | 东阳汉林传感器有限公司 | Pressure sensor detection device |
| CN114111668A (en) * | 2021-12-07 | 2022-03-01 | 北京蔚海明祥科技有限公司 | Be used for stay-supported displacement sensor reliability cycle testing arrangement |
| CN117629049A (en) * | 2024-01-25 | 2024-03-01 | 成都宏明电子股份有限公司 | Sliding handle type linear differential transformer type displacement sensor |
-
2018
- 2018-06-20 CN CN201820951675.8U patent/CN208206022U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813207A (en) * | 2019-03-18 | 2019-05-28 | 中国重汽集团大同齿轮有限公司 | A kind of AMT position sensor temperature drift test platform and its correction of temperature drift method |
| CN109813207B (en) * | 2019-03-18 | 2021-05-14 | 中国重汽集团大同齿轮有限公司 | AMT position sensor temperature drift test platform and temperature drift correction method thereof |
| CN110907092A (en) * | 2020-01-17 | 2020-03-24 | 东阳汉林传感器有限公司 | Pressure sensor detection device |
| CN110907092B (en) * | 2020-01-17 | 2020-10-27 | 萍乡市臻盈企业管理咨询中心 | Pressure sensor detection device |
| CN114111668A (en) * | 2021-12-07 | 2022-03-01 | 北京蔚海明祥科技有限公司 | Be used for stay-supported displacement sensor reliability cycle testing arrangement |
| CN117629049A (en) * | 2024-01-25 | 2024-03-01 | 成都宏明电子股份有限公司 | Sliding handle type linear differential transformer type displacement sensor |
| CN117629049B (en) * | 2024-01-25 | 2024-05-14 | 成都宏明电子股份有限公司 | Sliding handle type linear differential transformer type displacement sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208206022U (en) | A kind of LVDT displacement sensor is performance test bed | |
| CN203132484U (en) | Parallelism detection apparatus | |
| CN106352768A (en) | Adjustable testing device | |
| CN204807003U (en) | Detection mechanism | |
| CN209639945U (en) | A kind of fuel nozzle automatic testing tool | |
| CN109596080A (en) | Damper inner hole of cylinder instrument for testing precision | |
| CN105203000A (en) | Crankshaft radius inspection tool | |
| CN207540465U (en) | Universal joint outer ring test device | |
| CN106017285A (en) | Verticality and symmetry degree testing tool for piston pin hole | |
| CN209655958U (en) | A kind of pipeline pit depth detection device | |
| CN106272069A (en) | The circularity of a kind of external cylindrical surface grinding and linearity testing apparatus and detection method | |
| CN106289017B (en) | Revolving body helicla flute rotation angle and helical pitch measurer | |
| CN210464320U (en) | Detection tool for shaft sleeve | |
| CN106017379B (en) | A kind of pile pieces coefficient measuring device | |
| CN209416315U (en) | Calipers inside and outside a kind of external ball cage retainer | |
| CN208238700U (en) | Raceway gap measuring device | |
| CN207923102U (en) | a kind of piston pin hole verticality measuring instrument | |
| CN202182693U (en) | Detection tool used for detecting depth of glow plug hole of diesel engine | |
| CN211012903U (en) | Measuring device for cylindricity of large-aperture cylinder hole | |
| CN213515564U (en) | Utensil is examined to high efficiency measurement elastomer wall thickness | |
| CN209690059U (en) | Test device is compressed in a kind of quiet dynamic bidirectional face of board-like material | |
| CN209117776U (en) | A kind of high-precision transformer probe tester of automatic sensing | |
| CN205300555U (en) | Novel crawler shoe detects device | |
| CN210374855U (en) | Automatic thread measuring device | |
| CN209673071U (en) | A kind of construction engineering quality detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |