CN203672877U - Concrete shrinkage measuring instrument - Google Patents
Concrete shrinkage measuring instrument Download PDFInfo
- Publication number
- CN203672877U CN203672877U CN201420035768.8U CN201420035768U CN203672877U CN 203672877 U CN203672877 U CN 203672877U CN 201420035768 U CN201420035768 U CN 201420035768U CN 203672877 U CN203672877 U CN 203672877U
- Authority
- CN
- China
- Prior art keywords
- platform base
- concrete
- plane
- sloping platform
- milscale
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a concrete shrinkage measuring instrument. The measuring instrument comprises an inclined platform base, and the included angle between the inclined plane of the inclined platform base and the bottom is in a range of 3 degrees to 10 degrees. Two end plates are arranged symmetrically on the inclined plane of the inclined platform base and are perpendicular to the inclined plane of the inclined platform base. A micrometer is arranged on the end plate disposed at the higher position of the inclined plane of the inclined platform base, a location column is arranged on the end plate disposed at the lower position of the inclined plane of the inclined platform base, and the positions of the micrometer and the location column are corresponding. A plurality of concrete supporting frames are arranged between the two end plates on the inclined plane of the inclined platform base, and rolling shafts are arranged at the tops of the concrete supporting frames and are parallel to the inclined plane of the inclined platform base and perpendicular to the connection line between the micrometer and the location column. A concrete test block is disposed at a small angle, so that the concrete test block has small sliding force, and the test block is in constant tight contact with the micrometer and the location column. The measuring instrument is high in measuring accuracy, simple in structure, low in fabrication cost and simple to operate.
Description
Technical field
The utility model relates to a kind of surveying instrument, relates in particular to a kind of concrete shrinking measurer.
Background technology
Concrete is current very important civil engineering material, is widely used in civil engineering work.The volume-diminished phenomenon there will be in concrete coagulation initial stage or hardening process, i.e. concrete shrinkage.Concrete shrinkage can cause the harm such as member cracking, pretightning force loss.For the harm that prevents concrete shrinkage to bring, need to be according to this kind of concrete shrinkage factor of the specifying measurement of GB/T50082-2009 in concrete development process.Concrete contraction percentage is measured by a kind of special instrument, is concrete shrinking measurer, repeatedly measures shrinkage factor by concrete shrinkage instrument to concrete sample.
Concrete shrinking measurer in the market has and is divided into two kinds of contactless and contacts, contactless elimination manual operation error, retractometer precision is high, but complex structure, expensive; The contraction measuring instrument of contact exist concrete test block contact with air insufficient, manual operation etc. can cause the factor of obvious errors frequently, or adopt two clock gauges to measure, due to the error of clock gauge self or the error that manually reading causes, adopt two clock gauges to measure and strengthened this error, cause measurement result low precision.
Utility model content
For addressing the above problem, the utility model provides a kind of simple in structure, concrete shrinking measurer that measuring accuracy is high, easy to use, cheap.
The utility model is by the following technical solutions: a kind of concrete shrinking measurer, comprise sloping platform base, and the inclined-plane of described sloping platform base and the angle of bottom surface are 3 °-10 °; On the inclined-plane of described sloping platform base, be arranged with two end plates, described end plate is vertical with the inclined-plane of described base sloping platform; The end plate that is positioned at an inclined-plane high position for described sloping platform base is provided with milscale, and the measurement axle front end of described milscale is inner concavity, to coordinate the gauge head in concrete shrinkage test block, positions measurement; The end plate that is positioned at the inclined-plane low level of described sloping platform base is provided with reference column, and the front end of described reference column is inner concavity, to coordinate the gauge head in concrete shrinkage test block, positions measurement; Described milscale is corresponding with the position of described reference column; On the inclined-plane of described sloping platform base, between two end plates, be also provided with multiple concrete support framves, described concrete support top of the trellis is provided with the axis of rolling, be used for supporting concrete test block, the described axis of rolling is parallel and vertical with the line of described milscale and described reference column with the inclined-plane of described sloping platform base, to reduce the friction force between concrete test block and the described axis of rolling.
Preferably, the inclined-plane of described sloping platform base and the angle of bottom surface are 5 °; The coefficientoffrictionμ of the axis of rolling is generally in 0.01 left and right, in the time that concrete test block is placed on the described axis of rolling, gravity that should concrete test block is greater than its friction force along the component of described sloping platform base bevel direction, make again its component as much as possible little in order to avoid have influence on the degree of accuracy of measurement, be mgsin α > μ mgcos α, and α gets less value as far as possible, as calculated, 5 ° is optimal value.
Preferably, the height of described concrete support frame is greater than 3cm, can make concrete test block more abundant with contacting of air, guarantees the degree of accuracy of test.
Preferably, described milscale and described reference column are all positioned on the longitudinal centre line of described end plate, can make tester entirety more regular, more attractive in appearance.
Preferably, described milscale is electronic type milscale, and described electronic type milscale is electrically connected with solar energy photovoltaic panel, in very long test period to guarantee the power supply of described electronic type milscale.
Compared with prior art, the utlity model has following beneficial effect: concrete test block is placed and is a little angle, make concrete test block have a less sliding force, make test block and clock gauge and reference column remain close contact, and because angle is very little, so can not be subject to the impact of concrete test block self gravitation; Can make concrete test block fully contact with air, adopt a clock gauge to measure, affected by site error little, measuring accuracy is high, and simple in structure, cheap, simple to operate simultaneously.
Accompanying drawing explanation
Fig. 1 is stereographic map of the present utility model;
Fig. 2 is front view of the present utility model;
Fig. 3 is vertical view of the present utility model;
Wherein: 1, sloping platform base, 2, end plate, 3, electronic type milscale, 4, solar energy photovoltaic panel, 5, reference column, 6, concrete support frame, 7, the axis of rolling.
Embodiment
Describe by the following examples the utility model, should be noted that, cited embodiment should not understand the restriction to utility model.
As shown in the figure: a kind of concrete shrinking measurer, comprise sloping platform base 1, on the inclined-plane of described sloping platform base 1, be arranged with two end plates 2, described end plate 2 is vertical with the inclined-plane of described base sloping platform 1; The end plate 2 that is positioned at an inclined-plane high position for described sloping platform base 1 is provided with electronic type milscale 3, the measurement axle front end of described electronic type milscale 3 is inner concavity, to coordinate the gauge head in concrete shrinkage test block, position measurement, described electronic type milscale 3 is electrically connected with solar energy photovoltaic panel 4, in very long test period to guarantee the power supply of described electronic type milscale 3; The end plate 2 that is positioned at the inclined-plane low level of described sloping platform base 1 is provided with reference column 5, and the front end of described reference column 5 is inner concavity, to coordinate the gauge head in concrete shrinkage test block, positions measurement; Described electronic type milscale 3 is corresponding with the position of described reference column 5; On the inclined-plane of described sloping platform base 1, between two end plates 2, be also provided with four concrete support framves 6, the height of described concrete support frame 6 is greater than 3cm, can make concrete test block more abundant with contacting of air, guarantees the degree of accuracy of test; Described concrete support frame 6 tops are provided with the axis of rolling 7, be used for supporting concrete test block, the described axis of rolling 7 is parallel and vertical with the line of described reference column 5 with described electronic type milscale 3 with the inclined-plane of described sloping platform base 1, to reduce the friction force between concrete test block and the described axis of rolling 7.
The inclined-plane of described sloping platform base 1 and the angle of bottom surface are 5 °; The friction factor of the axis of rolling is generally in 0.01 left and right, in the time that concrete test block is placed on the described axis of rolling 7, gravity that should concrete test block is greater than its friction force along the component of described sloping platform base 1 bevel direction, make again its component as much as possible little in order to avoid have influence on the degree of accuracy of measurement, be mgsin α > μ mgcos α, and α gets less value as far as possible, as calculated, 5 ° is optimal value.
Described milscale and described reference column are all positioned on the longitudinal centre line of described end plate, can make tester entirety more regular, more attractive in appearance.
Obviously, foregoing is just for feature of the present utility model is described, and the not restriction to utility model, the variation that the those of ordinary skill in relevant technologies field is made in corresponding technical field according to the utility model should belong to protection category of the present utility model.
Claims (5)
1. a concrete shrinking measurer, is characterized in that, comprises sloping platform base, and the inclined-plane of described sloping platform base and the angle of bottom surface are 3 °-10 °; On the inclined-plane of described sloping platform base, be arranged with two end plates, described end plate is vertical with the inclined-plane of described base sloping platform; The end plate that is positioned at an inclined-plane high position for described sloping platform base is provided with milscale, and the measurement axle front end of described milscale is inner concavity; The end plate that is positioned at the inclined-plane low level of described sloping platform base is provided with reference column, and the front end of described reference column is inner concavity; Described milscale is corresponding with the position of described reference column; On the inclined-plane of described sloping platform base, between two end plates, be also provided with multiple concrete support framves, described concrete support top of the trellis is provided with the axis of rolling, and the described axis of rolling is parallel and vertical with the line of described milscale and described reference column with the inclined-plane of described sloping platform base.
2. concrete shrinking measurer according to claim 1, is characterized in that, the inclined-plane of described sloping platform base and the angle of bottom surface are 5 °.
3. concrete shrinking measurer according to claim 1, is characterized in that, the height of described concrete support frame is greater than 3cm.
4. concrete shrinking measurer according to claim 1, is characterized in that, described milscale and described reference column are all positioned on the longitudinal centre line of described end plate.
5. concrete shrinking measurer according to claim 1, is characterized in that, described milscale is electronic type milscale, and described electronic type milscale is electrically connected with solar energy photovoltaic panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420035768.8U CN203672877U (en) | 2014-01-21 | 2014-01-21 | Concrete shrinkage measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420035768.8U CN203672877U (en) | 2014-01-21 | 2014-01-21 | Concrete shrinkage measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203672877U true CN203672877U (en) | 2014-06-25 |
Family
ID=50969157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420035768.8U Expired - Fee Related CN203672877U (en) | 2014-01-21 | 2014-01-21 | Concrete shrinkage measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203672877U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760327A (en) * | 2014-01-21 | 2014-04-30 | 深圳大学 | Concrete shrinkage measuring instrument |
| CN105180745A (en) * | 2015-10-10 | 2015-12-23 | 中国电建集团贵阳勘测设计研究院有限公司 | Sliding concrete prism test alkali activity micrometer |
-
2014
- 2014-01-21 CN CN201420035768.8U patent/CN203672877U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760327A (en) * | 2014-01-21 | 2014-04-30 | 深圳大学 | Concrete shrinkage measuring instrument |
| CN105180745A (en) * | 2015-10-10 | 2015-12-23 | 中国电建集团贵阳勘测设计研究院有限公司 | Sliding concrete prism test alkali activity micrometer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103760327A (en) | Concrete shrinkage measuring instrument | |
| CN105004252A (en) | Detection method for verticality between splicing surface of long and thin workpiece with square cross section and reference surface | |
| CN203672877U (en) | Concrete shrinkage measuring instrument | |
| CN203595493U (en) | Wafer thickness measuring tool capable of measuring wafer in wax-applied polishing state | |
| CN206399353U (en) | A kind of weld seam camber measuring scale | |
| CN204574983U (en) | A kind of center hole pick-up unit | |
| CN203672288U (en) | Novel depth dial gauge | |
| CN204269110U (en) | A kind of side slope measuring equipment locating device based on laser ranging technique | |
| CN203286970U (en) | Device for detecting space angle | |
| CN203719613U (en) | Flatness measuring device | |
| CN203385363U (en) | Diameter gauge for large excircle | |
| CN102865793B (en) | The measurement mechanism of bearing washer inner arc surface and measuring method | |
| CN202501844U (en) | Square cross-shaped level gauge | |
| CN205014927U (en) | Wall thickness measuring tool | |
| CN204788177U (en) | Special thickness measurement device | |
| CN204575014U (en) | A kind of device for motor rockshaft fastener hole depth detection | |
| CN103673954A (en) | Polar plate pile height measuring device of lead-acid storage battery | |
| CN203605849U (en) | Piston comprehensive test tool | |
| CN209485227U (en) | A kind of wheel hub shoulder away from measuring device | |
| CN205027265U (en) | Size detection platform | |
| CN203949649U (en) | A kind of angular contact ball bearing or taper roll bearing assemble high measurement mechanism | |
| CN203405147U (en) | Measuring tool specially used for detecting stand hole of iron seat | |
| CN204007487U (en) | Inductance type planometer | |
| CN202041148U (en) | Tool for measuring non-planar height | |
| CN203758506U (en) | Measuring instrument for angle of inclination of inclined plane |
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: 20140625 Termination date: 20180121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |