CN202126256U - Contactless displacement measurement device - Google Patents
Contactless displacement measurement device Download PDFInfo
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- CN202126256U CN202126256U CN2011202209460U CN201120220946U CN202126256U CN 202126256 U CN202126256 U CN 202126256U CN 2011202209460 U CN2011202209460 U CN 2011202209460U CN 201120220946 U CN201120220946 U CN 201120220946U CN 202126256 U CN202126256 U CN 202126256U
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Abstract
The utility model relates to a contactless displacement measurement device which is divided into a sensor fixed group (A) and a target fixed group (B). A sliding seat (2) is fixed on a sensor fixing seat (1) by a fixing screw (10); an adjusting nut (3) is connected with a threaded sleeve (4) in a threaded manner; the sliding seat (2) is respectively connected with the adjusting nut (3) and the threaded sleeve (4); and a sensor (11) is fixed in the threaded sleeve (4) by a set screw (9). A target (12) is fixed at the upper rend of a target seat (14) by a target holddown nut (13) in a threaded manner. The adjusting nut (3) is twisted to adjust the distance between the sensor (11) and the target (12) so as to conveniently select the optimal measurement scope. The target (12) can move along with the contraction of concrete under the situation that the target (12) is not embedded into the concrete. In the prior art, the contactless displacement measurement device has the characteristics that the structure is brief; the distance adjustment precision is high; and the sensor and the target are stably fixed, thereby ensuring more accurate measurement.
Description
Affiliated field
The utility model belongs to a kind of non-contact displacement measurement device.When being used for the non-contact measurement concrete shrinkage deformation, be used for fixing the sensor of measuring distance and the device of target, belong to the technical field of non-contacting sensor Displacement Measurement.
Background technology
Object is in the displacement subtle change, and we detect displacement usually has several method, and a kind of is contactless, and a kind of is contact.When object mobile was in semi-fluid condition, we adopted contactless measurement, and target is imbedded in the semifluid, used the moving of contactless sensor measurement object, contraction, expansion etc.When object was solid, we can use the distortion of contact type measurement object.Present contact type measurement method receives the shape requirement of object relatively stricter; Such as: clear and definite profile arranged, the entity that can be used for contacting is arranged, if with mechanical type length gage measuring; It is solid that the object that moves must have an end; And mechanical type length measurer will be very fixing contact with testee, in the time of movement of objects, clock gauge or dial gauge are according to being moved the quantity that systolic pressure that object is given him demonstrates the testee displacement.
Mensuration for concrete drawdown deformation; Test block after the moulding can be used the direct contact measurement of mechanical type length amount; And when to concrete in 3 days the length of time morning shrinkage evaluation the time; Measure its drawdown deformation for the concrete that does not form firm entity, just need to use non-contact measurement.End positions above the die trial of fresh concrete is imbedded the target seat with clear surface of contact, utilize the displacement of the target seat upper end target that the non-contact displacement transducer measurement imbeds to confirm the displacement quantity of this material.Reach accurately and detect; Need non-contacting sensor well be fixed on the suitable position, two ends above the die trial; Need remain on the distance of target in the range of linearity of non-contacting sensor after non-contacting sensor is fixing, what the target fixation group can be firm is fixed on target on the target seat.Concrete shrinkage deformation detects on the market does not at present have very succinct, solid and reliable non-contact displacement measurement device; If it is not enough that contactless displacement passes the device accuracy; It will be very big utilizing the error of non-contact displacement measurement so, just can accurately not measure real displacement.
Summary of the invention
For can be when the non-contact displacement measurement; The distance of sensor and target is remained in the optimum measurement scope; Make the result after the test more accurate; The inventor has invented a kind of non-contact displacement measurement device, and this measurement mechanism is divided into sensor fixation group (A) and target fixation group (B) two parts, and two part assemblies can supportingly use.This non-contact displacement measurement device has play a part very important to the accuracy as a result of non-contact testing appearance test data.
The problem that the utility model solves is such: 1, sensor fixation group (A) has solved the stable installation question that sensor is fixed on the die trial top, and the probe positions of sensor and target are apart from can carrying out manual adjustments through the setting nut (3) on the sensor fixation group (A).Because must make sensor in its range of linearity in measuring, measuring accuracy just can be very high, so manual adjustments has confirmed that the probe positions of sensor and the distance of target reach the optimum measurement scope easily.2, target fixation group (B) target seat is placed in the concrete, and target is fixed on the top of target seat, and the convenient succinct target that makes can move along with concrete distortion under situation about not imbedding in the concrete.
The technical scheme that realizes the utility model purpose is such:
During use, sensor fixation group (A) is fixed on the test specimen box through the chucking screw of chucking screw hole (7), chucking screw hole (8).Slide (2) on the sensor fixation group (A) is fixed on the sensor holder (1) by gib screw (10); Setting nut (3) is connected by first guider screw (5) with slide (2); Thread bush (4) is connected by second guider screw (6) with slide (2), and sensor (11) is fixed in the thread bush (4) by holding screw (9).The target seat (14) of target fixation group (B) is imbedded in the concrete, and target (12) is screwed in target seat (14) upper end by target gland nut (13) with engage thread, is exposed on the concrete.Sensor (11) on the sensor fixation group (A) is relatively also vertical with target (12) face of real target fixation group (B); Rotation adjusting nut (3) can be adjusted the distance between existing sensor (11) and the target (12), confirms the best test specification of sensor (11) through the micro computer disposal system.The utility model is more succinct than conventional device on the market, and is more convenient, more accurate.
Use a kind of contactless displacement of the utility model to pass measurement mechanism, cooperate displacement measuring instrument again, can measure the early-age shrinkage of concrete in 3 days very accurately.
Description of drawings
Fig. 1 is the utility model schematic perspective view.
Fig. 2 is the structural representation of the utility model sensor fixation group (A).
Fig. 3 is the schematic perspective view of the utility model target fixation group (B).
Fig. 4 is the structural representation of the utility model target fixation group (B).
Wherein:
Sensor fixation group A:
1, sensor holder 2, slide 3, setting nut 4, thread bush 5, first guider screw 6, second guider screw 7, chucking screw hole 8, chucking screw hole 9, holding screw 10, gib screw 11, sensor
Target fixation group B:
12, target 13, target gland nut 14, target seat
Embodiment
In conjunction with accompanying drawing the utility model is described as follows:
When the non-contact displacement measurement device is installed; Slide (2) is fixed on the sensor holder (1) by gib screw (10) in the sensor fixation group (A); Setting nut (3) is connected with engage thread with thread bush (4); Setting nut (3) is connected by first guider screw (5) with slide (2), and thread bush (4) is connected by second guider screw (6) with slide (2), and sensor (11) is fixed in the thread bush (4) by holding screw (9).Target (12) in the target fixation group (B) is screwed in target seat (14) upper end by target gland nut (13) with engage thread.The target seat (14) of target fixation group (B) is imbedded in the concrete, and target (12) is screwed in target seat (14) upper end by target gland nut (13) with engage thread, is exposed on the concrete.
Reach the optimum measurement scope of sensor for the distance of accurately adjusting sensor (11) and target (12); During rotation adjusting nut (3), first guider screw (5) in the sensor fixation group (A) on the slide (2) play the guiding role to setting nut (3); It can only be rotated, can not move axially.
Reach the optimum measurement scope of sensor for the distance of accurately adjusting sensor (11) and target (12); During rotation adjusting nut (3); Second guider screw (6) double thread cover (4) in the sensor fixation group (A) on the slide (2) play the guiding role, and it is moved axially, and can not rotate.
For firm being fixed on the test specimen box of sensor fixation group (A), sensor fixation group (A) is through the chucking screw retention of chucking screw hole (7), chucking screw hole (8).
In order to ensure measuring accuracy, sensor (11) probe on the sensor fixation group (A) is relatively also vertical with target (12) plane on the target fixation group (B).
Claims (5)
1. non-contact displacement measurement device; It is characterized in that: said device is that sensor fixation group (A) and target fixation group (B) can be used; Slide (2) is fixed on the sensor holder (1) by gib screw (10) in the sensor fixation group (A); Setting nut (3) is connected with engage thread with thread bush (4), and setting nut (3) is connected by first guider screw (5) with slide (2), and thread bush (4) is connected by second guider screw (6) with slide (2); Sensor (11) is fixed in the thread bush (4) by holding screw (9), and the target (12) in the target fixation group (B) is screwed in target seat (14) upper end by target gland nut (13) with engage thread.
2. a kind of non-contact displacement measurement device according to claim 1 is characterized in that: first guider screw (5) in the said sensor fixation group (A) on the slide (2), setting nut (3) is play the guiding role, and it can only be rotated, can not move axially.
3. a kind of non-contact displacement measurement device according to claim 1 is characterized in that: second guider screw (6) the double thread cover (4) in the said sensor fixation group (A) on the slide (2) play the guiding role, and it is moved axially, and can not rotate.
4. a kind of non-contact displacement measurement device according to claim 1 is characterized in that: described sensor holder (1) passes through the chucking screw retention of chucking screw hole (7), chucking screw hole (8) on the test specimen box.
5. a kind of non-contact displacement measurement device according to claim 1 is characterized in that: sensor (11) probe on the said sensor fixation group (A) is relatively also vertical with target (12) plane on the target fixation group (B).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202209460U CN202126256U (en) | 2011-06-27 | 2011-06-27 | Contactless displacement measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202209460U CN202126256U (en) | 2011-06-27 | 2011-06-27 | Contactless displacement measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202126256U true CN202126256U (en) | 2012-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202209460U Expired - Fee Related CN202126256U (en) | 2011-06-27 | 2011-06-27 | Contactless displacement measurement device |
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| CN (1) | CN202126256U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424098A (en) * | 2012-05-16 | 2013-12-04 | 天津中科惠氏精密仪器制造有限公司 | Target frame of non-contact concrete deformation measuring instrument |
| CN104792369A (en) * | 2015-04-30 | 2015-07-22 | 中铁工程装备集团有限公司 | Wireless detecting device for rotating speed and abrasion of hobbing cutter of shield machine |
| CN107357317A (en) * | 2017-06-14 | 2017-11-17 | 陕西科技大学 | Nanoscale non-contact fiber sensor measurement adjusting apparatus and method |
-
2011
- 2011-06-27 CN CN2011202209460U patent/CN202126256U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424098A (en) * | 2012-05-16 | 2013-12-04 | 天津中科惠氏精密仪器制造有限公司 | Target frame of non-contact concrete deformation measuring instrument |
| CN104792369A (en) * | 2015-04-30 | 2015-07-22 | 中铁工程装备集团有限公司 | Wireless detecting device for rotating speed and abrasion of hobbing cutter of shield machine |
| CN107357317A (en) * | 2017-06-14 | 2017-11-17 | 陕西科技大学 | Nanoscale non-contact fiber sensor measurement adjusting apparatus and method |
| CN107357317B (en) * | 2017-06-14 | 2020-06-09 | 陕西科技大学 | Adjusting device and method for measuring nanoscale non-contact optical fiber sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING NEL INSTRUMENT CO., LTD. Free format text: FORMER NAME: BEIJING NAIR INSTRUMENT + EQUIPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100083, Beijing, Haidian District learning Road 16, learning know Xuan 1413 Patentee after: Beijing NEL Instrument Co., Ltd. Address before: 100083, Beijing, Haidian District learning Road 16, learning know Xuan 1413 Patentee before: Beijing Nel Instrument Equipment Co. Ltd. |
|
| DD01 | Delivery of document by public notice |
Addressee: Beijing NEL Instrument Co., Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120125 Termination date: 20190627 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |