CN2310316Y - Shearing press instrument for measuring concrete compressive strength - Google Patents
Shearing press instrument for measuring concrete compressive strength Download PDFInfo
- Publication number
- CN2310316Y CN2310316Y CN 97228707 CN97228707U CN2310316Y CN 2310316 Y CN2310316 Y CN 2310316Y CN 97228707 CN97228707 CN 97228707 CN 97228707 U CN97228707 U CN 97228707U CN 2310316 Y CN2310316 Y CN 2310316Y
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- piston rod
- utility
- model
- compressive strength
- fixed part
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- Expired - Fee Related
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a shearing press instrument for measuring concrete compressive strength, which is composed of a fixed part and a hydraulic power part. The utility model is characterized in that the fixed part comprises a fixed jaw and an adjustable screw; the hydraulic power part comprises an oil cylinder, a piston rod, and a retracting spring; the diameter of the piston rod is smaller than the diameter of the adjusting screw. Compared with the existing rebound method, ultrasonic rebound synthesis method, boring core method, withdrawal method, and spanking-nail penetration method for measuring concrete compressive strength, the utility model has the advantages of small size, convenient carry, simple operation, and high precision; the bearing capacity of the measured original structure can not be affected after measured; the utility model is suitable for measuring concrete elements on site or in laboratories.
Description
The utility model belongs to building structure with detecting facility, particularly a kind of can the scene or the laboratory with the instrument that detects concrete component compressive strength.
At present, the method that building structural element detects concrete strength has rebound method, ultrasonic rebound overall approach, core drilling method, pulling out method, nailing penetration method, and its performance is as showing:
| Method of testing | Advantage | Shortcoming |
| Rebound method | Instrument is light and handy, and is easy and simple to handle | Be subjected to the influence of concrete surface situation and carbonation depth to make test error bigger. |
| Ultrasonic method resilience overall approach | The ratio of precision rebound method increases | Need a Ultrasound Instrument, ultrasound examination must have pair survey face. |
| Core drilling method | The concrete strength of true reflect structure | It is heavier to bore the core machine, and need water source and power supply, can degree of running business into strong one after core need be processed test, and influence original structure after boring core, long from detecting out as a result the time |
| Pulling out method | Measuring accuracy is higher | Burying packing underground wastes time and energy, and the damage area after extracting is bigger, influences original structure. |
| The nailing penetration method | Instrument is little, and is easy and simple to handle | Be subjected to the influence of concrete surface situation bigger, test error is bigger. |
The purpose of this utility model is that a kind of novel platen press of cutting of design is tested the concrete strength instrument, and its weight of equipment is light, and volume is little, is not subjected to the influence of working-yard during use, and simple to operate, the measuring accuracy height.
The shearing press instrument that detection concrete crushing strength of the present utility model is used partly is made up of fixed part, hydraulic power, it is characterized in that: fixed part comprises fixing pincers and adjusting screw, in the fixing side that clamps of " U " type adjusting screw is set; Hydraulic power partly is positioned at the opposite side of fixing pincers, and the hydraulic pressure fixed part comprises oil cylinder, piston rod and retracting spring, and piston rod, retracting spring are arranged in the oil cylinder, is provided with the oil nozzle that can join with hand oil pump in the upper end of oil cylinder.
The diameter of described piston rod is less than the diameter of adjusting screw.
The course of work of this shearing press instrument is, after the hydraulic oil of coming in from hand oil pump enters oil cylinder, the promotion piston rod advances, piston rod touches concrete, adjusting screw on the fixing pincers begins to bear pressure, retracting spring is in compressive state, because the concrete compression face of adjusting screw one side is bigger than the concrete compression face of piston rod one side, according to equilibrium of forces, the both sides total force equates, the concrete compressive stress of piston rod one side is big, at first reach destruction at this place's concrete, behind the concrete destruction, open the oil return valve of hand oil pump, retracting spring relies on the elastic force of self that piston rod is resetted, and in-oil cylinder hydraulic oil is got back in the hand oil pump.Cut and press concrete to make its local failure, the maximum shearing pressure during the record concrete destruction according to the correlationship between concrete shearing pressure of having set up and concrete crushing strength, is inferred out concrete compressive strength.
In this shearing press instrument, the effect of oil cylinder and piston rod is to produce extruding force, and the effect of fixing pincers and adjusting screw is retainer instrument and counter-force is provided that retracting spring is that in-oil cylinder piston rod is resetted.
The shearing press instrument that detection concrete crushing strength of the present utility model is used, the advantage that possesses be, volume is little, and is easy to carry, simple to operate, and the measuring accuracy height does not influence the bearing capacity of original structure after the test.
The utility model is applicable to scene or lab investigation concrete component compressive strength.
Below in conjunction with drawings and Examples, the shearing press instrument that the detection concrete crushing strength is used is described further.
Fig. 1 is for detecting the shearing press instrument structural representation that concrete crushing strength is used
Fig. 2 is for using the utility model test concrete component intensity synoptic diagram
As can be seen, a kind ofly detect the shearing press instrument that concrete crushing strength is used, partly be made up of fixed part, hydraulic power, it is characterized in that: fixed part comprises fixing pincers 4 and adjusting screw 5, side at the fixing pincers 4 of " U " type is provided with adjusting screw, and there is adjustment hole 7 termination of adjusting screw; Hydraulic power partly is positioned at the opposite side of fixing pincers, the hydraulic pressure fixed part comprises oil cylinder 1, piston rod 2 and retracting spring 3, piston rod, retracting spring are arranged in the oil cylinder, be provided with the oil nozzle 6 that can join with hand oil pump in the upper end of oil cylinder, described adjusting screw diameter is bigger 1.9 times than diameter of piston rod.
Claims (1)
1, a kind ofly detect the shearing press instrument that concrete crushing strength is used, partly be made up of fixed part, hydraulic power, it is characterized in that: fixed part comprises fixing pincers and adjusting screw, in a side of the fixing pincers of " U " type adjusting screw is set; Hydraulic power partly is positioned at the opposite side of fixing pincers, and the hydraulic pressure fixed part comprises oil cylinder, piston rod and retracting spring, and piston rod, retracting spring are arranged in the oil cylinder, is provided with the oil nozzle that can join with hand oil pump in the upper end of oil cylinder; The diameter of piston rod is less than the diameter of adjusting screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97228707 CN2310316Y (en) | 1997-10-16 | 1997-10-16 | Shearing press instrument for measuring concrete compressive strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97228707 CN2310316Y (en) | 1997-10-16 | 1997-10-16 | Shearing press instrument for measuring concrete compressive strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2310316Y true CN2310316Y (en) | 1999-03-10 |
Family
ID=33941801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97228707 Expired - Fee Related CN2310316Y (en) | 1997-10-16 | 1997-10-16 | Shearing press instrument for measuring concrete compressive strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2310316Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871868A (en) * | 2010-07-16 | 2010-10-27 | 中国建筑科学研究院 | Device and method for detecting compressive strength of concrete by shearing method |
| CN102261987A (en) * | 2011-04-18 | 2011-11-30 | 赵正义 | Construction for detecting shearing resistance of junction surface between prefabricated structures of prefabricated concrete parts |
| CN105445121A (en) * | 2015-01-06 | 2016-03-30 | 北京市道路工程质量监督站 | Field detection equipment for shear resistance strength of asphalt mixture |
-
1997
- 1997-10-16 CN CN 97228707 patent/CN2310316Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871868A (en) * | 2010-07-16 | 2010-10-27 | 中国建筑科学研究院 | Device and method for detecting compressive strength of concrete by shearing method |
| CN102261987A (en) * | 2011-04-18 | 2011-11-30 | 赵正义 | Construction for detecting shearing resistance of junction surface between prefabricated structures of prefabricated concrete parts |
| CN105445121A (en) * | 2015-01-06 | 2016-03-30 | 北京市道路工程质量监督站 | Field detection equipment for shear resistance strength of asphalt mixture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |