CN203705281U - Digital display type concrete rebound instrument - Google Patents
Digital display type concrete rebound instrument Download PDFInfo
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- CN203705281U CN203705281U CN201320807937.0U CN201320807937U CN203705281U CN 203705281 U CN203705281 U CN 203705281U CN 201320807937 U CN201320807937 U CN 201320807937U CN 203705281 U CN203705281 U CN 203705281U
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Abstract
The utility model provides a digital display type concrete rebound instrument which comprises a bounce rod, a bounce hammer, a support rod as well as a first spring, a second spring, a first electromagnetic drive, a second electromagnetic drive, a liquid crystal display, a range selection switch and a control device, wherein the upper end of the first spring is connected to the first electromagnetic drive and is connected with a piezoelectric sensor in the first electromagnetic drive; the lower end of the first spring is attached to the bounce hammer; the upper end of the second spring is connected to the second electromagnetic drive and is connected with a piezoelectric sensor in the second electromagnetic drive; the lower end of the second spring is attached to the bounce hammer; the first spring penetrates through the second spring; the first spring, the second spring, the bounce hammer and the bounce rod are coaxially arranged. Through combination of double springs, the range ability of the rebound instrument can be increased, and the precision of measurement is also ensured when the range ability is increased.
Description
Technical field
The utility model relates to a kind of concrete nondestructive detecting instrument, particularly a kind of digital display type concrete bouncing back instrument.
Background technology
Concrete bouncing back instrument is the instrument for concrete strength Non-Destructive Testing, and it makes elastic hammer drive pointer rebound and indicate the distance of rebounding with a Spring driving elastic hammer and by the restoring force of elastic stem attack concrete surface generation Instantaneous elastic deformation.What rebound value (distance of rebounding and the ratio of distances constant that impacts front elastic hammer and elastic stem, percentagewise) reality reflected is concrete skin hardness.Concrete strength is higher, and skin hardness is also higher, has certain correlativity between the two.Therefore, use reisilometer to measure concrete surface hardness, just can, according to surveying district's concrete strength conversion table, infer and concrete intensity.This is also the method that detects the rear concrete crushing strength of sclerosis that is widely used in building.
In building trade, reisilometer used all adopts single spring as the elastic component that drives elastic hammer at present.But, the actual concrete that will measure is owing to detecting the difference of occasion, tend to have multiple strength grade scopes, and the reisilometer range of single spring can only be fixed within the specific limits, as 10-60MPa, this for example, will produce larger error for the very low concrete of measured intensity (, being less than 10MPa), and for example, for the very high concrete of intensity (being greater than 70MPa) so can cannot accurately measure because of no to scale, or cause measured value distortion.
Utility model content
The purpose of this utility model has simple limitation in order to overcome above-mentioned measurement range just, near range end value, easily produces the technical matterss such as error, and proposes a kind of combined digital display type concrete bouncing back instrument of dual spring that adopts.The utility model is by utilizing hairspring, and elasticity coefficient is little, and range is low but feature that precision is high and bulky spring, and elasticity coefficient is large, precision feature low but limit for height on range, thus make that both are combined has solved above-mentioned technical matters.
According to one side of the present utility model, a kind of digital display type concrete bouncing back instrument is provided, this reisilometer comprises elastic stem, elastic hammer, support bar, and also comprise the first spring, the second spring, the first electromagnetic driver, the second electromagnetic driver, liquid crystal display, range switch, control device; Wherein the upper end of the first spring is connected to the first electromagnetic driver and is connected with the piezoelectric sensor in the first electromagnetic driver, and lower end and the elastic hammer of this first spring are attached; The upper end of the second spring is connected to the second electromagnetic driver and is connected with the piezoelectric sensor in the second electromagnetic driver, and lower end and the elastic hammer of this second spring are attached; The first spring is set in the second spring, and the first spring, the second spring, elastic hammer and elastic stem are coaxial.
Wherein, range switch, the first electromagnetic driver, the second electromagnetic driver, liquid crystal display are connected with control device respectively.
Wherein, this control device comprises wave filter, A/D converter, processor and digital display driving circuit.
By adopting technique scheme of the present utility model, the utility model can be realized following useful technique effect: (1) can increase the range ability of reisilometer by the combination of dual spring; (2), in increasing range ability, can ensure the precision of measuring; (3) show by liquid crystal digital, can provide higher precision for user.
Brief description of the drawings
Fig. 1 schematically shows according to the inner structure schematic diagram of the digital display type concrete bouncing back instrument of embodiment;
Fig. 2 schematically shows according to the circuit theory diagrams of the control section of the digital display type concrete bouncing back instrument of embodiment.
As shown in the figure, in order clearly to realize the structure of embodiment of the present utility model, specific structure and device are marked in the drawings, but this is only for signal needs, be not intended to the utility model to be limited in this ad hoc structure, device and environment, according to specific needs, those of ordinary skill in the art can adjust these devices and environment or revise, and the adjustment of carrying out or amendment are still included in the scope of accompanying claim.
Embodiment
A kind of digital display type concrete bouncing back instrument the utility model being provided below in conjunction with the drawings and specific embodiments is described in detail.Here do to illustrate, in order to make embodiment more detailed, the following examples are best, preferred embodiment, also can adopt other alternative and implement for some known technology those skilled in the art simultaneously; And accompanying drawing part is only in order to describe more specifically embodiment, and be not intended to the utility model to carry out concrete restriction.
In the first embodiment, Fig. 1 schematically shows according to the inner structure schematic diagram of the digital display type concrete bouncing back instrument of embodiment.This digital display type concrete bouncing back instrument 10 mainly comprises elastic stem 1, elastic hammer 2, support bar 11, the first spring 3, the second spring 4, the first electromagnetic drivers 6, the second electromagnetic driver 5, liquid crystal display 7, range switch 8, control device 9.Wherein, elastic stem 1 is connected to elastic hammer 2 belows in a fixed manner, and coaxial with elastic hammer 2, elastic hammer 2 is connected to the bottom of the first electromagnetic driver 6 by support bar 11, support bar 11 is in the untapped situation of reisilometer, and the known way such as can adopt magnet attraction or stick is attached at the bottom of the first electromagnetic driver 6.
The upper end of the first spring 3 electrically and be mechanically connected to the first electromagnetic driver 6, and is connected with the piezoelectric sensor 12 in the first electromagnetic driver 6, and its lower end and elastic hammer are attached; The upper end of the second spring 4 electrically and be mechanically connected to the second electromagnetic driver 5, and is connected with the piezoelectric sensor 13 of the second electromagnetic driver 5, and its lower end and elastic hammer are attached.Wherein the elasticity coefficient of the first spring 3 is less than the elasticity coefficient of the second spring 4, and the first spring is set in the second spring contactlessly, and the first spring, the second spring, elastic hammer and elastic stem are coaxial.
Fig. 2 schematically shows according to the circuit theory diagrams of the control section of the digital display type concrete bouncing back instrument of embodiment.As shown in Figure 2, range switch 8, the first electromagnetic driver 6, the second electromagnetic driver 5, liquid crystal display 7 are connected with control device 9 respectively, and reception is from the data-signal of the piezoelectric sensor 13 of the piezoelectric sensor 12 in range switch 8, the first electromagnetic driver 6 and the second electromagnetic driver 5, send driving signal to the first electromagnetic driver 6 and the second electromagnetic driver 5 simultaneously, thereby control the Electromagnetic Launching of the first spring 3 or the second spring 4.Wherein in control device 9, mainly comprise wave filter 14, A/D converter 15, processor 16 and digital display driving circuit 17.Preferably, utilizing the dry cell or the accumulator that in reisilometer, carry is above-mentioned control section power supply, but is not limited to this, also can adopt the mode that connects external power source to power.
In the time that user uses this digital display type concrete bouncing back instrument, first measure measurement range selection by user by range switch 8, user can carry out valuation according to the concrete when pre-test conventionally, selects a rational range.Once user chooses after rational range gear by range switch 8, control device 9 receives the range of being selected by range switch 8, corresponding battery-operated device transmitted signal subsequently, the signal electromagnet of corresponding battery-operated device based on receiving drives corresponding spring to launch, thereby finally drives elastic hammer and pass through elastic stem attack concrete surface the restoring force that produces Instantaneous elastic deformation.Receive corresponding restoring force with piezoelectric sensor that rear spring connects, and be converted to electric signal and send to control device 9 to carry out calculating and the processing of signal.Subsequently, control device 9 is presented at the concrete strength digital value after converting in liquid crystal display 7 by digital display driving circuit.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. a digital display type concrete bouncing back instrument, this reisilometer comprises elastic stem, elastic hammer, support bar, it is characterized in that: this reisilometer also comprises the first spring, the second spring the first electromagnetic driver, the second electromagnetic driver, liquid crystal display, range switch, control device; Wherein
The upper end of the first spring is connected to the first electromagnetic driver and is connected with the piezoelectric sensor in the first electromagnetic driver, and lower end and the elastic hammer of this first spring are attached;
The upper end of the second spring is connected to the second electromagnetic driver and is connected with the piezoelectric sensor in the second electromagnetic driver, and lower end and the elastic hammer of this second spring are attached;
The first spring is set in the second spring, and the first spring, the second spring, elastic hammer and elastic stem are coaxial.
2. digital display type concrete bouncing back instrument according to claim 1, is characterized in that, range switch, the first electromagnetic driver, the second electromagnetic driver and liquid crystal display are connected with control device respectively.
3. digital display type concrete bouncing back instrument according to claim 2, is characterized in that, this control device comprises wave filter, A/D converter, processor and digital display driving circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320807937.0U CN203705281U (en) | 2013-12-11 | 2013-12-11 | Digital display type concrete rebound instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320807937.0U CN203705281U (en) | 2013-12-11 | 2013-12-11 | Digital display type concrete rebound instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203705281U true CN203705281U (en) | 2014-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320807937.0U Expired - Fee Related CN203705281U (en) | 2013-12-11 | 2013-12-11 | Digital display type concrete rebound instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN203705281U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241770A (en) * | 2015-10-09 | 2016-01-13 | 北京智博联科技股份有限公司 | Magnetic inductive type rebound sensor |
| CN107290275A (en) * | 2016-12-30 | 2017-10-24 | 李聪 | Oscillatory type concrete road surface detector |
| CN113008715A (en) * | 2021-04-13 | 2021-06-22 | 林细弟 | Concrete structure hardness detection device |
| CN113670754A (en) * | 2021-09-06 | 2021-11-19 | 中国化学工程第三建设有限公司 | Electromagnetic power concrete quality detection resiliometer device |
-
2013
- 2013-12-11 CN CN201320807937.0U patent/CN203705281U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241770A (en) * | 2015-10-09 | 2016-01-13 | 北京智博联科技股份有限公司 | Magnetic inductive type rebound sensor |
| CN107290275A (en) * | 2016-12-30 | 2017-10-24 | 李聪 | Oscillatory type concrete road surface detector |
| CN107290275B (en) * | 2016-12-30 | 2019-12-13 | 湖北交通工程检测中心有限公司 | Vibration type concrete pavement detector |
| CN113008715A (en) * | 2021-04-13 | 2021-06-22 | 林细弟 | Concrete structure hardness detection device |
| CN113670754A (en) * | 2021-09-06 | 2021-11-19 | 中国化学工程第三建设有限公司 | Electromagnetic power concrete quality detection resiliometer device |
| CN113670754B (en) * | 2021-09-06 | 2023-08-04 | 中国化学工程第三建设有限公司 | Electromagnetic power concrete quality detection resiliometer device |
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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: 20140709 Termination date: 20141211 |
|
| EXPY | Termination of patent right or utility model |