CN216117625U - Concrete shrinkage test device - Google Patents
Concrete shrinkage test device Download PDFInfo
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- CN216117625U CN216117625U CN202122715283.6U CN202122715283U CN216117625U CN 216117625 U CN216117625 U CN 216117625U CN 202122715283 U CN202122715283 U CN 202122715283U CN 216117625 U CN216117625 U CN 216117625U
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Abstract
本实用新型公开了一种混凝土收缩试验装置，包括标准长度杆、底板、支撑柱一、支撑柱二、两条导轨和激光标定仪；支撑柱一和支撑柱二分别设置在底板顶部两侧，支撑柱二与底板活动连接；两条导轨平行设置在底板顶部，两条导轨与底板活动连接，两条导轨之间设有试件固定板，且试件固定板与底板活动连接，所述试件固定板上设有试件紧固组件，导轨的两端均滑动连接有可在导轨上移动的千分表架与定位游标，且定位游标位于可移动千分表架的内侧，千分表架上设有千分表；激光标定仪设置在支撑柱一和支撑柱二之间，激光标定仪与支撑柱一和支撑柱二可拆卸连接。本实用新型结构简单，装置整体便于拆卸、运输和保存，而且还能够方便清洁，具有实用性。
The utility model discloses a concrete shrinkage test device, comprising a standard length rod, a base plate, a supporting column, a supporting column 2, two guide rails and a laser calibration instrument; the supporting column 1 and the supporting column 2 are respectively arranged on both sides of the top of the base plate, The second support column is movably connected with the bottom plate; two guide rails are arranged on the top of the bottom plate in parallel, the two guide rails are movably connected with the bottom plate, and a specimen fixing plate is arranged between the two guide rails, and the specimen fixing plate is movably connected with the bottom plate, and the test piece fixing plate is movably connected with the bottom plate. The specimen fixing plate is provided with a specimen fastening component, and both ends of the guide rail are slidably connected with a dial indicator frame and a positioning cursor that can move on the guide rail, and the positioning cursor is located on the inner side of the movable dial indicator frame. A dial indicator is arranged on the frame; a laser calibration instrument is arranged between the first support column and the second support column, and the laser calibration instrument is detachably connected to the first support column and the second support column. The utility model has a simple structure, the whole device is convenient for disassembly, transportation and storage, and also can be cleaned conveniently and has practicability.
Description
Technical Field
The utility model relates to the technical field of concrete test detection, in particular to a concrete shrinkage test device.
Background
Concrete, called concrete for short, is a general term for engineering composite materials formed by cementing aggregate into a whole by cementing materials. The concrete is cement concrete which is prepared by mixing cement as a cementing material, sand and stone as aggregates and water (which may contain an additive and an admixture) according to a certain proportion and is also called common concrete, and is widely applied to the field of civil engineering and construction. The quality of concrete is vital in the building, so when cold or high temperature weather pour, need detect the shrinkage and the inflation of concrete to reserve certain space when the building, avoid the potential safety hazard, so need concrete deformation detection device to detect the deformation of concrete.
The existing concrete detection device has a complex structure, and because the interior of the device contains precise parts such as a dial indicator, the device is inconvenient to disassemble, occupies a large amount of space, and causes certain difficulty in transportation and storage.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a concrete shrinkage test device to solve the problems of the background technology.
The technical scheme of the utility model is as follows: a concrete shrinkage test device comprises a standard length rod, a bottom plate, a first support column, a second support column, two guide rails and a laser calibration instrument; the first support column and the second support column are respectively arranged on two sides of the top of the bottom plate, the first support column is fixed with the bottom plate, and the second support column is movably connected with the bottom plate; the two guide rails are arranged on the top of the base plate in parallel and located between the first support column and the second support column, the two guide rails are movably connected with the base plate, a test piece fixing plate is arranged between the two guide rails and movably connected with the base plate, a test piece fastening assembly is arranged on the test piece fixing plate, a dial indicator frame and a positioning vernier which can move on the guide rails are connected to two ends of each guide rail in a sliding mode, the positioning vernier is located on the inner side of the dial indicator frame, and a dial indicator is arranged on the dial indicator frame; the laser calibration instrument is arranged between the first support column and the second support column and located above the test piece fixing plate, and the laser calibration instrument is detachably connected with the first support column and the second support column.
Furthermore, a clamping groove is formed in the side wall, opposite to the second support column, of the first support column, a horizontally arranged mounting opening is formed in the side wall of the second support column, the mounting opening and the clamping groove are opposite to each other, a vertically arranged insertion hole is formed in the top of the second support column, the insertion hole is communicated with the mounting opening, a positioning hole is formed in one end of the laser calibration instrument, a pin is inserted into the insertion hole, and the bottom of the pin is inserted into the positioning hole.
Furthermore, each positioning vernier is provided with a first fastening knob for fixing the moving position of the vernier.
Furthermore, each dial indicator frame is provided with a second fastening knob for fixing the moving position of the dial indicator frame.
Furthermore, the test piece fastening assembly comprises two pairs of third fastening knobs which are symmetrically arranged on two side plates of the test piece fixing plate respectively.
Furthermore, the second supporting column is movably connected with the bottom plate, the guide rail is movably connected with the bottom plate, and the test piece fixing plate is movably connected with the bottom plate through screws with rubber gaskets.
Compared with the prior art, the utility model has the beneficial effects that:
1. the device is simple in structure, the laser calibration instrument is detachably connected with the two support columns, the two guide rails are movably connected with the bottom plate, the test piece fixing plate is movably connected with the bottom plate, and the dial indicator frame can be separated from the slide rails through the second fastening knob which can move the dial indicator frame, so that the device is convenient to disassemble, transport and store integrally, the disassembled bottom plate can be conveniently cleaned, and the device has practicability.
2. The movable dial indicators are arranged at the two ends of the guide rail, so that the step of zeroing when the test is started can be omitted, the test process is accelerated, the standard length rod is a standard length correcting part for determining the reading zeroing of the two dial indicators, the operation is simple, and the accuracy of data is ensured.
Drawings
FIG. 1 is a schematic view of a standard length rod measurement configuration according to the present invention;
FIG. 2 is a schematic structural diagram of a concrete sample measured according to the present invention;
FIG. 3 is a top view of the structure of the test piece fixing plate in the present invention;
fig. 4 is a bottom view of the structure at the base plate of the present invention.
Description of reference numerals:
1. a base plate; 2. a first supporting column; 3. a second supporting column; 4. a guide rail; 5. a test piece fixing plate; 6. a laser calibration instrument; 7. positioning a cursor; 8. a dial gauge stand; 9. a dial indicator; 10. inserting pins; 11. a standard length rod; 12. a concrete sample; 13. an installation port; 14. a jack; 15. a card slot; 16. a screw with a rubber gasket; 51. a third fastening knob; 71. a first fastening knob; 81. and a second fastening knob.
Detailed Description
The following detailed description of embodiments of the utility model refers to the accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Examples
As shown in fig. 1 to 4, the present invention provides a concrete shrinkage test apparatus, which includes a standard length rod 11, a bottom plate 1, a first support column 2, a second support column 3, two guide rails 4 and a calibration instrument 6; the first supporting column 2 and the second supporting column 3 are respectively arranged on two sides of the top of the bottom plate 1, the first supporting column 2 is fixed with the bottom plate 1, and the second supporting column 3 is movably connected with the bottom plate 1; the two guide rails 4 are arranged on the top of the base plate 1 in parallel and located between the first support column 2 and the second support column 3, the two guide rails 4 are movably connected with the base plate 1, a test piece fixing plate 5 is arranged between the two guide rails 4, the test piece fixing plate 5 is movably connected with the base plate 1, a test piece fastening assembly is arranged on the test piece fixing plate 5, two ends of each guide rail 4 are respectively connected with a dial indicator frame 8 and a positioning vernier 7 which can move on the guide rails 4 in a sliding mode, the positioning vernier 7 is located on the inner side of the dial indicator frame 8, and a dial indicator 9 is arranged on the dial indicator frame 8; the laser calibration instrument 6 is arranged between the first support column 2 and the second support column 3 and located above the test piece fixing plate 5, and the laser calibration instrument 6 is detachably connected with the first support column 2 and the second support column 3.
Specifically, as shown in fig. 1, a clamping groove 15 is formed in a side wall of the first support column 2, which is opposite to the second support column 3, a horizontally arranged mounting opening 13 is formed in the side wall of the second support column 3, the mounting opening 13 and the clamping groove 15 are opposite to each other, a vertically arranged insertion hole 14 is formed in the top of the second support column 3, the insertion hole 14 is communicated with the mounting opening 13, a positioning hole is formed in one end of the laser calibration instrument 6, a pin 10 is inserted into the insertion hole 14, and the bottom of the pin 10 is inserted into the positioning hole.
As shown in fig. 1, each positioning cursor 7 is provided with a first fastening knob 71 for fixing the moving position of the cursor.
As shown in fig. 1, a second fastening knob 81 for fixing the moving position of the dial indicator stand is arranged on each dial indicator stand 8.
As shown in fig. 1 and 3, the specimen fastening assembly includes two pairs of third fastening knobs 51 symmetrically disposed on two side plates of the specimen fixing plate 5.
And the second supporting column 3 is movably connected with the base plate 1, the guide rail 4 is movably connected with the base plate 1, and the test piece fixing plate 5 is movably connected with the base plate 1 through screws 16 with rubber gaskets.
The measuring method for performing the shrinkage test on the concrete by adopting the experimental device comprises the following steps:
s1, concrete test piece preparation: when concrete shrinkage or expansion test is required, pouring the mixed concrete into a corresponding test mould according to corresponding standard requirements to manufacture a concrete test piece 12 with corresponding specification, and embedding horizontal shrinkage test probes made of stainless steel or other stainless materials at two ends of the concrete test piece 12;
s2, installing a guide rail and a test piece fixing plate: respectively installing the guide rail 4 and the test piece fixing plate 5 on the bottom plate 1 through a screw 16 with a rubber gasket to ensure firmness;
s3, installing a dial indicator: installing the dial indicator 4 on the dial indicator frame 3;
s4, mounting a second support column: fixing the second supporting column 3 on the bottom plate 1 by using a screw 16 with a rubber gasket;
s5, mounting a laser calibration instrument: inserting one end, which is not provided with a positioning hole, of the laser calibration instrument 6 into the clamping groove 15 of the fixed upright post 2, inserting one end, which is provided with a positioning hole, of the laser calibration instrument into the mounting opening 13 of the second support post 6, and then fixing the laser calibration instrument by using the bolt pin 10;
s6, determining a reference length, which comprises the following steps:
1) installing the standard length rod 11 into the test piece fixing plate 5, opening the laser calibration instrument, respectively rotating each third fastening knob 51 to clamp and position the side wall of the standard length rod 11, and enabling the central line of the standard length rod 11 to coincide with the laser alignment line of the laser calibration instrument 6;
2) simultaneously loosening the second fastening knobs 81 on the dial indicator frames 8 at the two ends of the guide rail 4 and the first fastening knobs 71 on the positioning cursors 7, pushing the dial indicator frames 8 from the two ends of the guide rail 4 to the middle simultaneously, stopping moving the dial indicator frames 8 to 1/2 of the measuring range of the dial indicator 9, then screwing the second fastening knobs 81 on the dial indicator frames 8 at the two ends of the guide rail 4, moving the positioning cursors 7 to abut against the dial indicator frames 8, and then screwing the first fastening knobs 71 to finish positioning the positioning cursors 7;
3) loosening the second fastening knob 81, enabling the dial indicator frame 8 to be close to the positioning vernier 7 as much as possible, accurately measuring the standard length rod 11 by using the dial indicator 9, and recording initial readings of the left dial indicator 9 and the right dial indicator 9;
s7, measuring the initial length of the concrete sample 12, wherein the method comprises the following steps:
a) loosening the third fastening knob 51, taking down the standard length rod 11, installing the concrete test piece 12 into the test piece fixing plate 5, turning on the laser positioner with reference to fig. 2, and rotating the third fastening knob 51 to adjust the center line of the concrete test piece 12 and the laser alignment line of the laser calibration instrument 6 to be coincident;
b) enabling the dial indicator frame 8 to be close to the positioning vernier 7, measuring the concrete sample 12 by using the dial indicator 9, recording the readings of the left dial indicator 9 and the right dial indicator 9, and calculating the difference between the current reading and the initial reading;
s8, curing the concrete specimen 12 according to the test requirements, repeating the step S7, and measuring the length after deformation;
s9, completing the test, during disassembly, firstly pulling out the plug pin 10, loosening the screw 16 with the rubber gasket at the bottom of the second support column 3, taking out the laser calibration instrument 6, loosening the third fastening knob 51, taking out the concrete test piece 12, loosening the second fastening knob 81 on the dial indicator frame 8, taking down the dial indicators 9 at two ends, loosening the screw 16 with the rubber gasket at the bottom of the bottom plate 1, taking down the guide rail 4 and the test piece fixing plate 5, and finally checking and cleaning the bottom plate 1 and the taken-down components.
Although the preferred embodiments of the present invention have been disclosed, the embodiments of the present invention are not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (6)
1. The utility model provides a concrete shrinkage test device, includes standard length pole (11) and bottom plate (1), its characterized in that still includes:
the first supporting column (2) and the second supporting column (3) are respectively arranged on two sides of the top of the bottom plate (1), the first supporting column (2) is fixed with the bottom plate (1), and the second supporting column (3) is movably connected with the bottom plate (1);
the device comprises two guide rails (4), a first support column (2) and a second support column (3), wherein the two guide rails (4) are arranged at the top of a base plate (1) in parallel and are positioned between the first support column (2) and the second support column (3), the two guide rails (4) are movably connected with the base plate (1), a test piece fixing plate (5) is arranged between the two guide rails (4), the test piece fixing plate (5) is movably connected with the base plate (1), a test piece fastening assembly is arranged on the test piece fixing plate (5), a dial indicator frame (8) and a positioning vernier (7) which can move on the guide rails (4) are connected to the two ends of each guide rail (4) in a sliding manner, the positioning vernier (7) is positioned on the inner side of the dial indicator frame (8), and a dial indicator (9) is arranged on the dial indicator frame (8);
and the laser calibration instrument (6) is arranged between the first support column (2) and the second support column (3) and is positioned right above the test piece fixing plate (5), and the laser calibration instrument (6) is detachably connected with the first support column (2) and the second support column (3).
2. The concrete shrinkage test device according to claim 1, wherein a clamping groove (15) is formed in the side wall, opposite to the second support column (3), of the first support column (2), a horizontally arranged mounting opening (13) is formed in the side wall of the second support column (3), the mounting opening (13) is opposite to the clamping groove (15), a vertically arranged insertion hole (14) is formed in the top of the second support column (3), the insertion hole (14) is communicated with the mounting opening (13), a positioning hole is formed in one end of the laser calibration instrument (6), an insertion pin (10) is inserted into the insertion hole (14), and the bottom of the insertion pin (10) is inserted into the positioning hole.
3. A concrete shrinkage test device according to claim 1, characterized in that each positioning cursor (7) is provided with a first fastening knob (71) for fixing the cursor movement position.
4. The concrete shrinkage test device according to claim 1, wherein each dial indicator frame (8) is provided with a second fastening knob (81) for fixing the moving position of the dial indicator frame.
5. A concrete shrinkage test device according to claim 1, wherein the specimen fastening assembly comprises two pairs of third fastening knobs (51) symmetrically arranged on two side plates of the specimen fixing plate (5).
6. The concrete shrinkage test device according to claim 1, wherein the second support column (3) is movably connected with the base plate (1), the guide rail (4) is movably connected with the base plate (1), and the test piece fixing plate (5) is movably connected with the base plate (1) through a screw (16) with a rubber gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122715283.6U CN216117625U (en) | 2021-11-08 | 2021-11-08 | Concrete shrinkage test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122715283.6U CN216117625U (en) | 2021-11-08 | 2021-11-08 | Concrete shrinkage test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216117625U true CN216117625U (en) | 2022-03-22 |
Family
ID=80714192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122715283.6U Active CN216117625U (en) | 2021-11-08 | 2021-11-08 | Concrete shrinkage test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216117625U (en) |
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2021
- 2021-11-08 CN CN202122715283.6U patent/CN216117625U/en active Active
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