CN204679359U - 4.5J high strength concrete resiliometer - Google Patents
4.5J high strength concrete resiliometer Download PDFInfo
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- CN204679359U CN204679359U CN201520352802.9U CN201520352802U CN204679359U CN 204679359 U CN204679359 U CN 204679359U CN 201520352802 U CN201520352802 U CN 201520352802U CN 204679359 U CN204679359 U CN 204679359U
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Abstract
4.5J high strength concrete resiliometer, the button of the guide flange that the elastic tension spring that it comprises housing, the telescopic elastic stem in body front port place, instrument shell front end, the centre pilot that to be slidably connected with elastic stem, the elastic hammer that centre pilot slides, elastic hammer front end are connected, elastic hammer rear end are connected by centre pilot and hook, temporary fixed guide flange, be positioned at elastic hammer side and the indicator slide block that can slide on needle pivot, above-mentioned housing is formed by connecting by body after shell precursor and shell: elastic hammer stroke is 100mm; Elastic tension spring is in unhook position release moment, and the impact kinetic energy of reisilometer is 4.5J; Anticreep O-ring seal is had between elastic stem endoporus and centre pilot.The utility model further increases the accuracy of detection strength of high strength concrete and reads value accuracy.
Description
Technical field
The utility model relates to a kind of detecting instrument, particularly the instrument of nondestructive measurement strength of high strength concrete.
Background technology
Normal concrete reisilometer is the regulation according to China GB/T 9138-1988 " reisilometer ", power stroke only has 75mm, elastic hammer weight 0.37kg, the spherical radius 25mm on elastic stem top, reisilometer nominal energy is 2. 207J, only can detect the concrete of below 60.0MPa intensity, and when detecting the concrete between 45.0MPa ~ 60.0MPa intensity, error is very large.Current China high-strength concrete (strength grade is more than or equal to the concrete of C60) is a large amount of popularization and application, and normal concrete reisilometer standard energy is little, very large for high-strength concrete test error, has not been suitable for the intensity detection of high-strength concrete.Existing concrete bouncing back instrument it comprise housing, guide flange that elastic tension spring that the telescopic elastic stem in body front port place, instrument shell front end, the centre pilot be slidably connected with elastic stem, the elastic hammer that centre pilot slides, elastic hammer front end are connected, elastic hammer rear end are connected by centre pilot and hook, temporary fixed guide flange button, be positioned at elastic hammer side and the indicator slide block that can slide on needle pivot.For the detection of high-strength concrete, need modified node method and optimisation technique parameter on the basis of existing coagulation scholar reisilometer, and improve the accuracy rate detected further.
Summary of the invention
The purpose of this utility model is to provide a kind of 4.5J high strength concrete resiliometer, detects strength of high strength concrete accuracy and rebound value and surveys to solve to improve the technical barrier reading accuracy; And solve the problem facilitating operation and maintenance to maintain.
The technical solution of the utility model: this 4.5J high strength concrete resiliometer, it comprises housing, the telescopic elastic stem in body front port place, instrument shell front end, the central guiding stalk be slidably connected with elastic stem, the elastic hammer that centre pilot slides, the elastic tension spring that elastic hammer front end connects, the guide flange that elastic hammer rear end is connected by centre pilot and hook, the button of temporary fixed guide flange, be positioned at elastic hammer side and the indicator slide block that can slide on needle pivot and the pointer with indicator slide block consolidation, it is characterized in that: above-mentioned housing is formed by connecting by body after shell precursor and shell, elastic tension spring drift is that 106 ± 0.5mm(takes out the outer and measured value under unconfined condition of instrument housing), elastic tension spring impingement length value (being also called the tensile elongation of elastic tension spring) is 100 ± 0.5mm, and elastic tension spring is being stretched to impingement length release moment, and the impact kinetic energy of reisilometer is 4.0 ~ 4.5J, elastic hammer quality is 513 ~ 527g, elastic tension spring rigidity is 860 ~ 940N/m, and the force of sliding friction between indicator slide block and needle pivot is 0.65 ± 0.15 newton, the spherical radius on elastic stem top is 34.0 ~ 36.0mm, reisilometer quality be 20kg, anvil core striking face hardness be rebound value on the riveting stake of HRC60 ± 2 is 88 ± 2.
Beneficial effect: the utility model is more more reasonable than existing high strength concrete resiliometer structure, and technical parameter is optimized more, is more applicable to the detection of high-strength concrete, further increases and detects strength of high strength concrete accuracy, reduce measuring error.It is with a spring driven weight, by elastic stem attack concrete surface, measures distance-rebound value that weight is returned by rebounding, and using rebound value as the index relevant to intensity, estimates a kind of utility model instrument of strength of high strength concrete.When strength of high strength concrete detects, the utility model 4.5J high strength concrete resiliometer is stretched to impingement length 100mm release moment at elastic tension spring, and reisilometer nominal energy is 4.5J.The utility model instrument through domestic 11 provinces, municipality directly under the Central Government and autonomous region's test, obtain that related coefficient is 0.86, relative standard deviation is 16.2%, the age of concrete 2.5 years, the detected intensity scope of application at the high-strength concrete strength test curve formula of 11.8MPa ~ 110.7MPa is
.Facts have proved that the utility model instrument metrical error is very little, meet the accuracy requirement of Site Detection strength of high strength concrete completely.
When the spherical radius on elastic stem top is less, the energy that concrete surface absorbs is large, rebound value is low, accuracy of detection reduces: when the spherical radius on elastic stem top is larger (such as spherical radius is 45mm), and the energy that concrete surface absorbs is little, and rebound value is high, but, the test angle deviation of instrument operating personnel at work easily causes elastic stem front end aspheric surface contact concrete surface problem, and this problem can cause test error to strengthen, and is unfavorable for in-situ concrete strength testing.The spherical radius on elastic stem top is fixed on 34.0 ~ 36.0mm scope by the utility model, overcomes these problems, significantly improves accuracy of detection.After feather key and shell, at an angle, to the axis of body one of its advantage make guide flange along regulation orbiting motion.Its two be make elastic hammer when resilience by pointer drive indicator slide block move to resilience peak position, to ensure accurately to read concrete springback value.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is elastic tension spring drift measuring position schematic diagram on movement;
Fig. 3 is elastic stem front end spherical radius schematic diagram;
Fig. 4 is pointer, slide block and needle pivot assembling schematic diagram.
In figure: the dust-proof beaver of 1-, 2-blocks a shot, 3-buffer spring, 4-spring base, 5-half-round clamping ring, 6-anticreep packing, 7-shell precursor, 8-elastic tension spring, 9-centre pilot, 10-elastic hammer, 11-fixed block, 12-rebound value reads chi, 13-feather key, 14-needle pivot, 15-pointer, 16-indicator slide block (abbreviation slide block), 17-guide flange, 18-hook spring, 19-tail-hood, 20-Compress Spring, 21-set nut, 22-adjusts bolt, 23-links up with, 24-bearing pin, 25-push-button socket, 26-button, 27-locates hook lock, 28-button spring, body after 29-shell, 30-elastic stem.
Embodiment
Embodiment is see Fig. 1, this high strength concrete resiliometer, the elastic tension spring 8 that it comprises housing, the telescopic elastic stem 30 in body front port place, instrument shell front end, the centre pilot 9 be slidably connected with elastic stem, the elastic hammer 10 that centre pilot slides, elastic hammer front end are connected, the button of the guide flange 17 that elastic hammer rear end is connected by centre pilot and hook 23, temporary fixed guide flange, be positioned at elastic hammer side and the indicator slide block 16 that can slide on needle pivot, above-mentioned housing is formed by connecting by body after shell 29 and shell precursor 7; The stroke of elastic hammer 10 is 100mm; Line between the tip of pointer 15 and indicator slide block groove, the projected length on needle pivot 14 is pointer length, and the force of sliding friction between indicator slide block and needle pivot is 0.65 ± 0.15 newton (see Fig. 4); The spherical radius R on elastic stem top is that 34.0 ~ 36.0mm(is see Fig. 3); On elastic stem head, cover has anticreep packing 6.High strength concrete resiliometer has an oval column Instrument shell, and it is threaded with the tail-hood 19 of afterbody, and front end is connected with block 2, and core section (see Fig. 2) is encapsulated in Instrument shell.Reisilometer front end has elastic stem 30 to stretch out outside Instrument shell.Elastic stem 30 is connected with centre pilot 9 by buffer spring 3 and endoporus, and centre pilot 9 other end is threaded with guide flange 17, and the hinged hook 23 of guide flange 17, the other end of hook 23 is connected with guide flange 17 by hook spring 18.Compress Spring 20 is provided with between guide flange 17 and tail-hood 19.Centre pilot 9 and connectedly have elastic hammer 10 by sliding, elastic hammer 10 front end and elastic tension spring 8 affixed.Elastic tension spring 8 other end is affixed by spring base 4 and half-round clamping ring 5 and Instrument shell (shell precursor 7 and shell after body 29 assembly).Fixed block 11 is for fixed pointers axle 14, and dust-proof felt collar 1 is for preventing dust by the gap ingress engine between elastic stem 30 and spring base 4.In addition, when reisilometer does not use, press the button 26, make button block guide flange 17.At the beginning of reisilometer test, elastic tension spring is in free state, and first decontrol button 26, the major part of elastic stem 30, under the effect of Compress Spring 20, is shifted onto outside Instrument shell by guide flange 17, centre pilot 9, links up with 23 simultaneously and hangs in the groove of elastic hammer 10.When reisilometer is pressed to concrete surface, elastic stem 30 is constantly retracted in Instrument shell, elastic hammer 10 has been tangled owing to now linking up with 23, so, along with elastic stem 30 inside contracts, elastic tension spring 8 is stretched, when tensile elongation reaches 100mm, link up with 23 tops to contact with adjustment bolt 22, and hook spring 18 is compressed, hook 23 and elastic hammer 10 are thrown off suddenly, elastic hammer 10 centrally guide rod 9 passes through elastic stem 30 attack concrete surface, thereafter elastic hammer 10 is returned by bounce-back again, at this moment elastic hammer 10 drives the indicator slide block 16 on needle pivot 14 to slide along needle pivot 14 by pointer 15, achieve the whole process of reisilometer work.Rebound value is read chi 12 reading pointer by rebound value and is stopped the rear residing position of slip to obtain.
After shell, body 29 inner face is fixed with a pair bar shaped feather key 13 vertically, after feather key 13 and shell body 29 axis between have an angle, one of its advantage makes guide flange 17 along regulation orbiting motion.It two is that elastic tension spring 8 is when being stretched, elastic hammer 10 can not drive pointer 15 and indicator slide block 16 to move, and ensure when elastic hammer 10 rebounds to drive pointer 15 and indicator slide block 16 to move to elastic hammer 10 by the extreme higher position of rebounding, to read by rebound value the concrete springback value that chi 12 reads this test.
Claims (1)
1.4.5J high strength concrete resiliometer, the button of the guide flange that the elastic tension spring that it comprises housing, the telescopic elastic stem in body front port place, instrument shell front end, the centre pilot be slidably connected with elastic stem, the elastic hammer that centre pilot slides, elastic hammer front end are connected, elastic hammer rear end are connected by centre pilot and hook, temporary fixed guide flange, be positioned at elastic hammer side and the indicator slide block that can slide on needle pivot, it is characterized in that: above-mentioned housing is formed by connecting by body after shell precursor and shell; Elastic tension spring drift is 106 ± 0.5mm; Elastic tension spring tensible rigidity is 860 ~ 940N/m, and elastic tension spring impingement length is 100 ± 0.5mm, and elastic tension spring is stretched to impingement length release moment, and the impact kinetic energy of reisilometer is 4.0 ~ 4.5J; Elastic hammer quality is 513 ~ 527g; Between indicator slide block and needle pivot, force of sliding friction is 0.65 ± 0.15 newton; The spherical radius on elastic stem top is 34.0 ~ 36.0mm; The riveting stake rebound value of reisilometer is 88 ± 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520352802.9U CN204679359U (en) | 2015-05-27 | 2015-05-27 | 4.5J high strength concrete resiliometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520352802.9U CN204679359U (en) | 2015-05-27 | 2015-05-27 | 4.5J high strength concrete resiliometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204679359U true CN204679359U (en) | 2015-09-30 |
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ID=54179042
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520352802.9U Expired - Fee Related CN204679359U (en) | 2015-05-27 | 2015-05-27 | 4.5J high strength concrete resiliometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204679359U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323782A (en) * | 2016-08-29 | 2017-01-11 | 西安超越智能科技有限公司 | Pneumatic rebound test hammer |
| CN106679912A (en) * | 2016-12-30 | 2017-05-17 | 长安大学 | Electromagnetic-driven lossless resiliometer and measuring method of the same |
| CN107817183A (en) * | 2017-08-10 | 2018-03-20 | 上海多克实业有限公司 | A kind of single activation instrument |
| CN108645700A (en) * | 2018-05-31 | 2018-10-12 | 苏州市吴江东南建筑检测有限公司 | A kind of concrete bouncing back instrument and its application method |
| CN110132720A (en) * | 2019-06-10 | 2019-08-16 | 淮安市水利工程建设管理服务中心 | A kind of underwater reisilometer and its method detecting underwater concrete intensity |
| CN112881156A (en) * | 2021-03-04 | 2021-06-01 | 南京工业大学 | Nondestructive detector for strength of lightweight aggregate concrete |
| CN114264563A (en) * | 2021-12-27 | 2022-04-01 | 乐陵市回弹仪厂 | 3.503 Joule concrete resiliometer |
| CN115420445A (en) * | 2022-11-03 | 2022-12-02 | 河南浩聚实业有限公司 | Bridge detection device |
| CN116223270A (en) * | 2023-05-09 | 2023-06-06 | 广东广泽实业有限公司 | Concrete product performance test equipment and method |
| CN116429615A (en) * | 2023-04-11 | 2023-07-14 | 广州大学 | Resiliometer for detecting strength of underwater concrete |
-
2015
- 2015-05-27 CN CN201520352802.9U patent/CN204679359U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323782A (en) * | 2016-08-29 | 2017-01-11 | 西安超越智能科技有限公司 | Pneumatic rebound test hammer |
| CN106679912A (en) * | 2016-12-30 | 2017-05-17 | 长安大学 | Electromagnetic-driven lossless resiliometer and measuring method of the same |
| CN106679912B (en) * | 2016-12-30 | 2019-11-12 | 长安大学 | A kind of lossless reisilometer and measurement method of electromagnetic drive |
| CN107817183A (en) * | 2017-08-10 | 2018-03-20 | 上海多克实业有限公司 | A kind of single activation instrument |
| CN108645700B (en) * | 2018-05-31 | 2020-10-20 | 苏州市吴江东南建筑检测有限公司 | Concrete resiliometer and use method thereof |
| CN108645700A (en) * | 2018-05-31 | 2018-10-12 | 苏州市吴江东南建筑检测有限公司 | A kind of concrete bouncing back instrument and its application method |
| CN110132720B (en) * | 2019-06-10 | 2021-12-21 | 淮安市水利工程建设管理服务中心 | Underwater resiliometer for detecting strength of underwater concrete and method thereof |
| CN110132720A (en) * | 2019-06-10 | 2019-08-16 | 淮安市水利工程建设管理服务中心 | A kind of underwater reisilometer and its method detecting underwater concrete intensity |
| CN112881156A (en) * | 2021-03-04 | 2021-06-01 | 南京工业大学 | Nondestructive detector for strength of lightweight aggregate concrete |
| CN112881156B (en) * | 2021-03-04 | 2022-04-05 | 同济大学建筑设计研究院(集团)有限公司 | Nondestructive detector for strength of lightweight aggregate concrete |
| CN114264563A (en) * | 2021-12-27 | 2022-04-01 | 乐陵市回弹仪厂 | 3.503 Joule concrete resiliometer |
| CN114264563B (en) * | 2021-12-27 | 2024-05-03 | 乐陵市回弹仪厂 | 3.503J concrete resiliometer |
| CN115420445A (en) * | 2022-11-03 | 2022-12-02 | 河南浩聚实业有限公司 | Bridge detection device |
| CN116429615A (en) * | 2023-04-11 | 2023-07-14 | 广州大学 | Resiliometer for detecting strength of underwater concrete |
| CN116429615B (en) * | 2023-04-11 | 2024-03-29 | 广州大学 | Resiliometer for detecting strength of underwater concrete |
| CN116223270A (en) * | 2023-05-09 | 2023-06-06 | 广东广泽实业有限公司 | Concrete product performance test equipment and method |
| CN116223270B (en) * | 2023-05-09 | 2023-12-19 | 广东汇海材料有限公司 | Concrete product performance test equipment and method |
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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: 20150930 Termination date: 20160527 |