CN115014983A - Detection device for testing deformation of concrete in low-temperature environment and testing method thereof - Google Patents
Detection device for testing deformation of concrete in low-temperature environment and testing method thereof Download PDFInfo
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- CN115014983A CN115014983A CN202210605078.0A CN202210605078A CN115014983A CN 115014983 A CN115014983 A CN 115014983A CN 202210605078 A CN202210605078 A CN 202210605078A CN 115014983 A CN115014983 A CN 115014983A
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- 239000004567 concrete Substances 0.000 title claims abstract description 112
- 238000012360 testing method Methods 0.000 title claims abstract description 109
- 238000001514 detection method Methods 0.000 title claims abstract description 25
- 238000005057 refrigeration Methods 0.000 claims abstract description 43
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 30
- 238000010998 test method Methods 0.000 claims abstract description 3
- 238000006073 displacement reaction Methods 0.000 claims description 30
- 238000005192 partition Methods 0.000 claims description 30
- 238000003825 pressing Methods 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 5
- 238000012372 quality testing Methods 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a detection device for testing the deformation quantity of concrete in a low-temperature environment and a testing method thereof, relating to the technical field of concrete quality testing; in order to solve the problem of poor test quality; the detection device comprises a refrigeration box arranged on the top surface of a support, wherein the interior of the refrigeration box consists of a refrigeration chamber and a normal temperature chamber from top to bottom; the top outer wall of refrigeration case is provided with the closing cap, the equal fixedly connected with guide post in bottom four corners position of closing cap, and guide post sliding connection is in the inner wall of refrigeration case, and the bottom of guide post is connected with the top four corners position that separates the board through the bolt. The test method of the detection device comprises the following steps: the concrete test piece to be tested is conveyed to the top end of the refrigeration box through the first material conveying part and the second material conveying part, and the sealing cover ascends under the linkage of the second material conveying part. The invention ensures the test accuracy of the concrete test piece, avoids the complex work of repeatedly taking and placing the concrete test piece, and further improves the test efficiency.
Description
Technical Field
The invention relates to the technical field of concrete quality testing, in particular to a detection device for testing deformation of concrete in a low-temperature environment and a testing method thereof.
Background
As one of the most important clean energy sources, LNG is beginning to be widely used in various countries around the world, and storage conditions are very severe because LNG liquefaction temperature is-165 ℃. At present, a terminal tower for storing LNG is mainly based on a cooperative structure of an internal steel sealing layer and an external reinforced concrete protective layer. Therefore, in order to ensure that the concrete used meets the quality requirements, it is necessary to study the temperature deformation of the concrete used in the ultra-low temperature environment.
At present, domestic and foreign scholars are in when carrying out deformation test to concrete under low temperature or ultra-low temperature environment, consider that the sensor can't normally work under the ultra-low temperature environment, consequently mainly adopt to place concrete sample in low temperature insulation can or refrigerator cooling, treat that the test piece temperature reaches the requirement after, take out it fast and carry out deformation test, however, the concrete sample that tests through this kind of mode is not really in the low temperature environment, its temperature changes along with surrounding high temperature environment easily, and then the uneven phenomenon of temperature distribution can appear, thereby lead to the experimental result inaccurate, and different low temperature stages all need take the concrete sample repeatedly and test, it is comparatively loaded down with trivial details and inefficiency. Based on the above, the detection device for testing the deformation of the concrete in the low-temperature environment is provided, wherein the detection device has high test precision and data accuracy.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a detection device and a detection method for testing the deformation quantity of concrete in a low-temperature environment.
In order to achieve the purpose, the invention adopts the following technical scheme:
a detection device for testing deformation of concrete in a low-temperature environment comprises a refrigeration box arranged on the top surface of a support, wherein the interior of the refrigeration box consists of a refrigeration chamber and a normal-temperature chamber from top to bottom; the outer wall of the top of the refrigeration box is provided with a sealing cover, four corners of the bottom of the sealing cover are fixedly connected with guide columns, the guide columns are connected to the inner wall of the refrigeration box in a sliding mode, and the bottom ends of the guide columns are connected with the four corners of the top of the partition plate through bolts;
the outer wall of one side of the refrigeration box is fixedly connected with a control panel;
a fixing frame is fixedly connected to one side face of the support, and a first material conveying part and a second material conveying part are respectively arranged on the inner wall of the bottom of the fixing frame and one side face of the fixing frame;
the inner wall sliding connection of refrigeration room has the partition board, and the top outer wall that separates the board is provided with test piece clamping part.
Preferably: the material conveying part comprises an air cylinder fixedly connected to the inner wall of the bottom of the fixing frame, a piston rod slidably connected to the inner wall of the air cylinder, a folding air bag fixedly connected to the inner wall of the bottom of the fixing frame, a first supporting plate fixedly connected to the top end of the folding air bag and a positioning column slidably connected to the inner wall of the first supporting plate;
the top end of the piston rod is fixedly connected to the outer wall of the bottom of the second supporting plate, the bottom end of the positioning column is fixedly connected to the inner wall of the bottom of the fixing frame, and the outer wall of the circumference of the inflator is connected with the input end of the folding air bag through the guide pipe.
Preferably: the material conveying part II comprises an electric sliding chute arranged on one side surface opposite to the fixed frame, and a second supporting plate connected to the inner wall of the electric sliding chute in a sliding manner through a sliding block;
and the second supporting plate and the top surface of the sealing cover are fixedly connected with a connecting rod in an L-shaped structure.
Preferably: the test piece clamping part comprises a fixed block fixedly connected to the outer wall of the top of the partition plate, a linkage plate slidably connected to the inner wall of one side opposite to the fixed block, a clamping plate fixedly connected to the top face of the linkage plate, and a slide rod inserted into the inner wall of the linkage plate close to the bottom end, wherein a groove is formed in the inner wall of the bottom of the partition plate below the fixed block, the linkage plate penetrates through the groove, and the linkage plate and the groove form sliding fit;
the outer wall of one end of the sliding rod close to and one side face of the linkage plate are fixedly connected with the same elastic piece.
Preferably: a temperature separation part is arranged on one side face of the groove and the linkage plate and consists of a heat insulation block and a folding shield fixedly connected to the top face and the bottom face of the heat insulation block.
Preferably: the inner wall of the fixing block is fixedly provided with a push plate through a connecting plate, the outer wall of the top of the partition plate, which is right opposite to the push plate, is fixedly connected with a positioning plate, the inner wall of the bottom of the positioning plate is provided with a long rod, the long rod penetrates through the partition plate, and the long rod and the partition plate form sliding fit;
the bottom end of the long rod and the outer wall of the bottom of the partition plate are fixedly connected with the same buffer piece, and the buffer piece is wrapped on the outer wall of the long rod; the top end of the long rod is connected with a limiting plate through a sliding part;
the sliding part comprises a connecting block which is rotatably connected to the top end of the long rod and a movable groove which is arranged on the outer wall of one side of the limiting plate.
Preferably: one side surface of each linkage plate opposite to the other side surface of each linkage plate is fixedly connected with the same displacement meter B;
and the bottom end of the long rod is fixedly connected with a displacement meter A.
Preferably: the top outer wall of the sealing cover is fixedly connected with a top support piece, an extension end of the top support piece is fixedly connected with a telescopic pressing plate in an L-shaped structure, a heat insulation pad is arranged on the bottom face of the telescopic pressing plate, and a pressure sensor is fixed on the inner wall of the heat insulation pad.
Preferably: an insulating layer is arranged on the inner wall surface of the refrigeration box; sealing strips are arranged on the peripheral edge of the bottom of the sealing cover;
the outer wall of one side of the refrigeration box is fixedly connected with a temperature detector;
the outer wall of one side of refrigeration case is provided with the slide rail, and the inner wall of slide rail has the chamber door through slider sliding connection.
A test method of a detection device for testing the deformation quantity of concrete in a low-temperature environment comprises the following steps:
s1: conveying the concrete sample to be tested to the top end of the refrigeration box through the first material conveying part and the second material conveying part, and lifting the sealing cover under the linkage of the second material conveying part to open the refrigeration chamber;
s2: transferring the concrete sample to be tested onto a fixed block, fixing the position of the concrete sample to be tested by using a sample clamping part, a long rod and a push plate, and adjusting a material conveying part to control a sealing cover to move downwards so as to close a refrigeration chamber;
s3: adjusting different low-temperature test stages of the concrete sample and corresponding test duration parameters through the control panel;
s4: detecting the displacement distance of the two linkage plates in different test stages according to the displacement meter B, and detecting the displacement distance of the bottom surface of the separation plate and the bottom end of the long rod in different test stages according to the displacement meter A to obtain deformation quantity results of the peripheral size and thickness of the concrete test piece;
s5: and adjusting the pressure of the telescopic press plate for pressing the upper surface of the concrete test piece through the supporting piece to obtain the compression deformation resistance of the concrete test piece at different low temperature stages.
The invention has the beneficial effects that:
1. according to the invention, the refrigeration chamber and the normal temperature chamber are separately and independently arranged, so that deformation amount detection of the concrete sample in different low temperature environments is conveniently carried out by utilizing the refrigeration chamber, meanwhile, the detection element is conveniently stored in the normal temperature chamber, the detection element is prevented from working abnormally in the low temperature environment, the test accuracy of the concrete sample is ensured, the tedious work of repeatedly taking and placing the concrete sample is avoided, and the test efficiency is further improved.
2. According to the invention, the first material conveying part and the second material conveying part are arranged, the electric chute is started to drive the second supporting plate to ascend, the sealing cover is driven to move upwards through the connecting rod, the refrigerating chamber is automatically opened, the piston rod is driven to lift in the air cylinder when the second supporting plate ascends, then air is pumped from the folding air bag through the guide pipe, the first supporting plate slowly moves downwards along the positioning column, the distance between the first supporting plate and the second supporting plate is adjusted to be maximally, so that a concrete test piece on the second supporting plate is transferred into the refrigerating chamber, and the concrete test piece to be tested is placed on the first supporting plate, and the device is convenient to use.
3. When the second supporting plate moves downwards, the air cylinder is pressurized by the piston rod, so that the air in the air cylinder is gradually conveyed into the folding air bag through the guide pipe, the expanded folding air bag pushes the first supporting plate to ascend along the positioning column, and further, the distance between the first supporting plate and the second supporting plate is automatically adjusted to be minimum, so that a concrete test piece to be tested on the first supporting plate is conveniently transferred onto the second supporting plate, and the labor is saved for carrying in the whole process.
4. According to the invention, the periphery of the concrete test piece is firmly fixed by arranging the test piece clamping part, the limiting plate is turned to be in a horizontal state on the long rod, and the limiting plate is pushed to move back and forth through the movable groove, so that the bottom surface of the limiting plate is tightly attached to the top surface of the concrete test piece under the pulling of the buffer piece, and the support is provided for testing the thickness deformation of the concrete test piece.
5. According to the height of the concrete sample, the top support piece is started to drive the telescopic pressing plate to press the upper surface of the concrete sample, when the pressure detected by the pressure sensor reaches a set value, a signal is transmitted to the control panel, the control panel controls the top support piece to be closed, and then the compression deformation resistance of the concrete sample at different low temperature stages can be detected, so that a comprehensive test result can be obtained.
Drawings
FIG. 1 is a schematic view of a back-view unfolding structure of a detection device for testing the deformation of concrete in a low-temperature environment according to the present invention;
FIG. 2 is a schematic front view of a testing apparatus for testing the deformation of concrete in a low-temperature environment according to the present invention;
FIG. 3 is a schematic structural diagram of a detection apparatus for testing deformation of concrete in a low-temperature environment according to the present invention in a top view and in an open state;
FIG. 4 is a schematic view of the bottom structure of a cover of the detecting device for testing the deformation amount of concrete in a low temperature environment according to the present invention;
FIG. 5 is a schematic top view of a partition board of the detecting device for testing the deformation of concrete in a low-temperature environment according to the present invention;
FIG. 6 is a schematic diagram of a side view of a partition board of the detecting device for testing the deformation amount of concrete in a low-temperature environment according to the present invention;
FIG. 7 is a schematic cross-sectional view of a temperature blocking portion of a detecting device for testing the deformation of concrete in a low-temperature environment according to the present invention;
fig. 8 is a schematic circuit flow diagram of a detection apparatus for testing the deformation amount of concrete in a low-temperature environment according to the present invention.
In the figure: the refrigerator comprises a support 1, a refrigerator 2, an operation panel 3, a temperature detector 4, a top supporting piece 5, a sealing cover 6, a sliding rail 7, a refrigerator door 8, a greenhouse 9, a buffering piece 10, a fixing frame 11, a connecting rod 12, an electric sliding chute 13, a second supporting plate 14, a first supporting plate 15, a positioning column 16, a folding air bag 17, an air cylinder 18, a guide column 19, a limiting plate 20, a fixing block 21, a separating plate 22, a telescopic pressing plate 23, a sealing strip 24, a heat insulating pad 25, a clamping plate 26, a movable groove 27, a long rod 28, a positioning plate 29, a displacement meter A30, a folding blocking cover 31, an elastic piece 32, a displacement meter B33, a sliding rod 34, a linkage plate 35 and a heat insulating block 36.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Example 1:
a detection device for testing the deformation amount of concrete in a low-temperature environment is disclosed, as shown in figures 1-3 and 8, and comprises a refrigeration box 2 placed on the top surface of a support 1, wherein the interior of the refrigeration box 2 consists of a refrigeration chamber and a normal temperature chamber 9 from top to bottom, so that deformation amount detection of a concrete sample in different low-temperature environments is facilitated by utilizing the refrigeration chamber, and meanwhile, a detection element is convenient to store through the normal temperature chamber 9, the detection element is prevented from working abnormally in the low-temperature environment, and the test accuracy is further ensured; the outer wall of one side of the refrigeration box 2 is provided with a slide rail 7, and the inner wall of the slide rail 7 is connected with a box door 8 in a sliding manner through a slide block; the box door 8 is pushed up and down in the slide rail 7, so that people can conveniently overhaul and adjust the condition in the room temperature 9.
Furthermore, an operation panel 3 is fixed on the outer wall of one side of the refrigeration box 2 through bolts, so that the corresponding test duration of the concrete test piece at different low temperatures can be conveniently adjusted; a temperature detector 4 for detecting the temperature of the refrigerating chamber is fixed on the outer wall of one side of the refrigerating box 2 through a bolt, and the temperature detector 4 is in communication connection with the control panel 3; the inner wall surface of the refrigeration box 2 is filled with an insulating layer for slowing down the loss of cold air in the refrigeration chamber, as shown in fig. 3, which is not marked;
as shown in fig. 3 and fig. 5-8, in order to fix the concrete sample, the inner wall of the refrigeration chamber is slidably connected with a partition plate 22, the outer wall of the top of the partition plate 22 is provided with a sample clamping portion, the sample clamping portion comprises a fixed block 21 fixed on the outer wall of the top of the partition plate 22 through a bolt, a linkage plate 35 slidably connected to the inner wall of the opposite side of the fixed block 21, a clamping plate 26 fixed on the top surface of the linkage plate 35 through a bolt, a slide rod 34 inserted into the inner wall of the linkage plate 35 at the position close to the bottom end, the inner wall of the bottom of the partition plate 22 positioned below the fixed block 21 is provided with a groove, the linkage plate 35 penetrates through the groove, and the linkage plate 35 and the groove form a sliding fit;
preferably, a temperature blocking part is arranged on one side surface of the groove and the linkage plate 35, and the temperature blocking part consists of a heat insulation block 36 and a folding shield 31 which is bonded on the top surface and the bottom surface of the heat insulation block 36; when the linkage plate 35 slides in the groove, the temperature separation part is passively stretched or extruded to comprehensively block the groove, so that cold air in the refrigerating chamber is prevented from flowing into the normal temperature chamber 9, and the influence on the detection element is reduced.
Preferably, the same elastic piece 32 is welded on the outer wall of the sliding rod 34 close to one end and one side surface of the linkage plate 35; the clamping plates 26 at the opposite positions are separated, then the concrete sample is placed on the fixing block 21, the two linkage plates 35 are elastically extruded by the elastic piece 32 at one side and move towards the middle on the sliding rod 34, and then the concrete sample is clamped by the two clamping plates 26, so that the fixing work of the concrete sample is completed.
Preferably, the same displacement meter B33 is fixed on one side face of each of the two linkage plates 35 through bolts, and the displacement meter B33 is in communication connection with the control panel 3; during the refrigeration period of the refrigeration chamber, the displacement distance between the two linkage plates 35 in different testing stages is detected according to the displacement meter B33 in the constant temperature chamber 9, and then the deformation quantity result of the peripheral size of the concrete test piece is obtained.
As shown in fig. 3, 5 and 8, in order to obtain the height deformation amount of the concrete sample, a push plate is fixed on the inner wall of the fixing block 21 through a connecting plate, a positioning plate 29 is fixed on the outer wall of the top of the partition plate 22 facing the push plate through a bolt, a long rod 28 is inserted into the inner wall of the bottom of the positioning plate 29, the long rod 28 penetrates through the partition plate 22, the long rod 28 and the partition plate 22 form a sliding fit, the same buffer member 10 is welded on the bottom end of the long rod 28 and the outer wall of the bottom of the partition plate 22, and the buffer member 10 is wrapped on the outer wall of the long rod 28; the top end of the long rod 28 is connected with a limit plate 20 through a sliding part;
further, the sliding part comprises a connecting block rotatably connected to the top end of the long rod 28 and a movable groove 27 arranged on the outer wall of one side of the limiting plate 20; clamping and fixing two sides of the concrete test piece by using the test piece clamping part, adjusting one side surface of the concrete test piece to be attached to one side surface of the long rod 28, then adjusting the extension degree of the push plate through the connecting plate to firmly fix the periphery of the concrete test piece, then turning the limiting plate 20 on the long rod 28 to be in a horizontal state, pushing the limiting plate 20 to move back and forth through the movable groove 27, and enabling the bottom surface of the limiting plate 20 to be tightly attached to the top surface of the concrete test piece under the pulling of the buffer piece 10;
preferably, a displacement meter A30 for detecting the height deformation of the concrete sample is fixed at the bottom end of the long rod 28 through a bolt, and the displacement meter A30 is in communication connection with the control panel 3; during the refrigeration period of the refrigeration chamber, the displacement distance between the bottom surface of the separation plate 22 and the bottom end of the long rod 28 in different test stages is detected according to the displacement meter A30 in the constant temperature chamber 9, and then the deformation quantity result of the height, namely the thickness, of the concrete test piece is obtained.
As shown in fig. 1 to 4, in order to facilitate opening of the sealing cover 6, the sealing cover 6 is clamped on the outer wall of the top of the refrigeration box 2, four corners of the bottom of the sealing cover 6 are fixedly connected with guide columns 19, the guide columns 19 are slidably connected to the inner wall of the refrigeration box 2, and the bottom ends of the guide columns 19 are connected with four corners of the top of the partition plate 22 through bolts; when the sealing cover 6 is opened, the sealing cover moves upwards vertically through the guide column 19 and drives the partition plate 22 to move synchronously in the refrigerating chamber, so that the time for placing the concrete sample is shortened.
Preferably, in order to improve the sealing performance of the refrigerating chamber, the sealing strip 24 is clamped at the peripheral edge of the bottom of the sealing cover 6, so that cold air is prevented from leaking;
still further, as shown in fig. 1, 4 and 8, a top supporting member 5 is fixed on the outer wall of the top of the sealing cover 6 through a bolt, the top supporting member 5 is in communication connection with the control panel 3, an extending end of the top supporting member 5 is fixed with an L-shaped telescopic pressing plate 23 through a bolt, a thermal insulation pad 25 is bonded on the bottom surface of the telescopic pressing plate 23, a pressure sensor is fixed on the inner wall of the thermal insulation pad 25, the model of the pressure sensor is JYB-KB-CW2000, and the top supporting member 5 and the pressure sensor are in communication connection with the control panel 3; according to the surface size of the concrete sample, the extension length of the telescopic pressing plate 23 is adjusted, after the sealing cover 6 is closed, the jacking piece 5 is started to drive the telescopic pressing plate 23 to press the upper surface of the concrete sample according to the height of the concrete sample, when the pressure sensor detects that the pressure reaches a set value, a signal is transmitted to the control panel 3, the control jacking piece 5 is controlled to be closed, and then the compression deformation resistance of the concrete sample at different low-temperature stages can be detected, so that a comprehensive test result can be obtained.
The concrete test piece is convenient to carry to a refrigerating chamber; as shown in fig. 1-3, a fixing frame 11 is fixed on one side surface of the bracket 1 through a bolt, a first material conveying part and a second material conveying part are respectively arranged on the bottom inner wall and one side surface of the fixing frame 11, the first material conveying part comprises an air cylinder 18 fixed on the bottom inner wall of the fixing frame 11 through a bolt, a piston rod connected to the inner wall of the air cylinder 18 in a sliding manner, a folding air bag 17 fixed on the bottom inner wall of the fixing frame 11 through a bolt, a first supporting plate 15 fixed on the top end of the folding air bag 17 through a bolt, a positioning column 16 connected to the inner wall of the first supporting plate 15 in a sliding manner, the top end of the piston rod is fixed on the bottom outer wall of the second supporting plate 14 through a bolt, the bottom end of the positioning column 16 is fixed on the bottom inner wall of the fixing frame 11 through a bolt, and the circumferential outer wall of the air cylinder 18 is connected with the input end of the folding air bag 17 through a guide pipe;
further, the material conveying part comprises an electric sliding chute 13 arranged on one side surface of the fixed frame 11 opposite to the material conveying part, and a second supporting plate 14 connected to the inner wall of the electric sliding chute 13 in a sliding manner through a sliding block;
preferably, in order to enable the cover 6 to be opened along with the approach of the concrete sample on the second supporting plate 14, the connecting rod 12 in an L-shaped structure is fixed on the top surfaces of the second supporting plate 14 and the cover 6 through bolts;
starting the electric sliding chute 13 to drive the second supporting plate 14 to ascend, further driving the sealing cover 6 to ascend through the connecting rod 12, so that the refrigerating chamber is automatically opened, and when the second supporting plate 14 ascends, the piston rod is driven to ascend in the air cylinder 18, further air is sucked from the folding air bag 17 through the guide pipe, so that the first supporting plate 15 moves downwards along the positioning column 16 slowly, the distance between the first supporting plate 15 and the second supporting plate 14 is adjusted to be maximum, so that the concrete test piece on the second supporting plate 14 is transferred into the refrigerating chamber, the concrete test piece to be tested is placed on the first supporting plate 15, then the electric sliding chute 13 is closed, so that the second supporting plate 14 is moved downwards, when the second supporting plate 14 moves downwards, the air in the air cylinder 18 is compressed through the piston rod, so that the air in the air cylinder is gradually conveyed into the folding air bag 17 through the guide pipe, the expanded folding air bag 17 pushes the first supporting plate 15 to ascend along the positioning column 16, and further, the distance between the first supporting plate 15 and the second supporting plate 14 is automatically adjusted to be minimum, thereby be convenient for shift the concrete sample that awaits measuring on the first layer board 15 to the second layer board 14 on, convenient to use uses manpower sparingly whole transport.
Before the device is used, the electric chute 13 is started to drive the second supporting plate 14 to ascend, the connecting rod 12 drives the sealing cover 6 to ascend, the guide post 19 drives the separating plate 22 to synchronously move in the refrigerating chamber when the sealing cover 6 moves, so that the refrigerating chamber is automatically opened, the piston rod is driven to ascend in the air cylinder 18 when the second supporting plate 14 ascends, air is further sucked from the folding air bag 17 through the guide pipe, the first supporting plate 15 slowly descends along the positioning post 16, the distance between the first supporting plate 15 and the second supporting plate 14 is adjusted to be maximum, so that a concrete sample on the second supporting plate 14 is transferred into the refrigerating chamber, the concrete sample to be detected is placed on the first supporting plate 15, the electric chute 13 is closed, the second supporting plate 14 is moved downwards, the air cylinder 18 is compressed through the piston rod when the second supporting plate 14 descends, and the air in the air is gradually conveyed into the folding air bag 17 through the guide pipe, the expanded folding air bag 17 pushes the first supporting plate 15 to ascend along the positioning column 16, and then the distance between the first supporting plate 15 and the second supporting plate 14 is automatically adjusted to be minimum, so that a concrete test piece to be tested on the first supporting plate 15 is conveniently transferred to the second supporting plate 14.
When a concrete test piece is placed in the refrigerating chamber, the clamping plates 26 at the opposite positions are separated, then the concrete test piece is placed on the fixed block 21, the two linkage plates 35 are elastically extruded by the elastic piece 32 at one side and move towards the middle on the sliding rod 34, and when the linkage plates 35 slide in the grooves, the temperature blocking parts are stretched or extruded passively so as to block the grooves comprehensively and prevent cold air in the refrigerating chamber from flowing into the normal-temperature chamber 9; adjust concrete test piece one side and the laminating of stock 28 one side mutually, then the degree of extension of push pedal is adjusted through the connecting plate, make concrete test piece firmly fixed all around, then overturn limiting plate 20 to the horizontality on stock 28, and promote limiting plate 20 and make it through the 27 back-and-forth movements of activity groove, make the bottom face of limiting plate 20 this moment under the pulling of bolster 10 tightly hug closely the top face that closes in concrete test piece, then according to concrete test piece's surface dimension, adjust the extension length of telescopic pressing plate 23, so that can suppress for concrete test piece's top when closing cap 6 is closed.
Before formal testing, different low-temperature stages and corresponding testing duration of the concrete test piece are adjusted through the control panel 3, and during the refrigerating period of the refrigerating chamber, the displacement distance between the two linkage plates 35 in different testing stages is detected according to a displacement meter B33 in the constant-temperature chamber 9, so that a deformation quantity result of the peripheral dimension of the concrete test piece is obtained; detecting the displacement distance between the bottom surface of the partition plate 22 and the bottom end of the long rod 28 in different test stages according to a displacement meter A30 in the atmospheric chamber 9, and further obtaining the deformation quantity result of the height, namely the thickness, of the concrete test piece; after the sealing cover 6 is closed, the top support piece 5 is started to drive the telescopic pressing plate 23 to press the upper surface of the concrete sample according to the height of the concrete sample, when the pressure detected by the pressure sensor reaches a set value, a signal is transmitted to the control panel 3, the control panel controls the top support piece 5 to be closed, and then the compression deformation resistance of the concrete sample at different low-temperature stages can be detected.
Example 2:
a method for testing the deformation amount of concrete in low temperature environment according to the detecting device in embodiment 1, as shown in fig. 1-8, comprising the following steps:
s1: the concrete test piece to be tested is conveyed to the top end of the refrigerating box 2 through the first material conveying part and the second material conveying part, and the sealing cover 6 ascends under the linkage of the second material conveying part to open the refrigerating chamber;
s2: transferring the concrete sample to be tested to the fixing block 21, fixing the position of the concrete sample to be tested by using the sample clamping part, the long rod 28, the push plate and the like, and adjusting the material conveying part to control the downward movement of the sealing cover 6 to close the refrigerating chamber;
s3: different low-temperature test stages and corresponding test duration parameters of the concrete test piece are adjusted through the control panel 3;
s4: detecting the displacement distance between the two linkage plates 35 in different test stages according to the displacement meter B33, and detecting the displacement distance between the bottom surface of the partition plate 22 and the bottom end of the long rod 28 in different test stages according to the displacement meter A30 to obtain deformation quantity results of the peripheral size and thickness of the concrete test piece;
s5: the pressure of the telescopic pressing plate 23 pressing down the upper surface of the concrete sample is adjusted through the supporting piece 5, and the compression deformation resistance quantity of the concrete sample at different low temperature stages is obtained.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The detection device for testing the deformation quantity of the concrete in the low-temperature environment comprises a refrigeration box (2) arranged on the top surface of a support (1), and is characterized in that the refrigeration box (2) consists of a refrigeration chamber and a normal-temperature chamber (9) from top to bottom; the refrigerator is characterized in that a sealing cover (6) is arranged on the outer wall of the top of the refrigerator box (2), four corners of the bottom of the sealing cover (6) are fixedly connected with guide columns (19), the guide columns (19) are connected to the inner wall of the refrigerator box (2) in a sliding mode, and the bottom ends of the guide columns (19) are connected with the four corners of the top of the partition plate (22) through bolts;
the outer wall of one side of the refrigeration box (2) is fixedly connected with a control panel (3);
a fixing frame (11) is fixedly connected to one side face of the support (1), and a first material conveying part and a second material conveying part are respectively arranged on the inner wall of the bottom of the fixing frame (11) and one side face of the fixing frame;
the inner wall sliding connection of refrigeration room has partition plate (22), and the top outer wall that separates plate (22) is provided with test piece clamping part.
2. The detecting device for testing the deformation quantity of the concrete in the low-temperature environment as claimed in claim 1, wherein the material conveying part comprises an air cylinder (18) fixedly connected to the inner wall of the bottom of the fixing frame (11), a piston rod slidably connected to the inner wall of the air cylinder (18), a folding air bag (17) fixedly connected to the inner wall of the bottom of the fixing frame (11), a first supporting plate (15) fixedly connected to the top end of the folding air bag (17), and a positioning column (16) slidably connected to the inner wall of the first supporting plate (15);
the top end of the piston rod is fixedly connected to the outer wall of the bottom of the second supporting plate (14), the bottom end of the positioning column (16) is fixedly connected to the inner wall of the bottom of the fixing frame (11), and the circumferential outer wall of the air cylinder (18) is connected with the input end of the folding air bag (17) through a guide pipe.
3. The detecting device for testing the deformation quantity of the concrete in the low-temperature environment according to claim 2, wherein the material conveying part comprises an electric sliding chute (13) arranged on one side surface of the fixed frame (11), and a second supporting plate (14) connected to the inner wall of the electric sliding chute (13) in a sliding manner through a sliding block;
the second supporting plate (14) and the top surface of the sealing cover (6) are fixedly connected with a connecting rod (12) in an L-shaped structure.
4. The device for detecting the deformation quantity of the concrete in the low-temperature environment according to claim 1, wherein the test piece clamping portion comprises a fixed block (21) fixedly connected to the outer wall of the top of the partition plate (22), a linkage plate (35) slidably connected to the inner wall of one side of the fixed block (21), a clamping plate (26) fixedly connected to the top face of the linkage plate (35), a sliding rod (34) inserted into the inner wall of the linkage plate (35) close to the bottom end, a groove is formed in the inner wall of the bottom of the partition plate (22) below the fixed block (21), the linkage plate (35) penetrates through the groove, and the linkage plate (35) is in sliding fit with the groove;
the outer wall of the sliding rod (34) close to one end and one side face of the linkage plate (35) are fixedly connected with the same elastic piece (32).
5. The device for detecting the deformation of the concrete in the low-temperature environment according to claim 4, wherein a temperature blocking part is arranged on one side surface of the groove and the linkage plate (35), and the temperature blocking part comprises a temperature insulation block (36) and folding blocking covers (31) fixedly connected to the top surface and the bottom surface of the temperature insulation block (36).
6. The detecting device for testing the deformation quantity of the concrete in the low-temperature environment is characterized in that a push plate is fixed on the inner wall of the fixing block (21) through a connecting plate, a positioning plate (29) is fixedly connected to the outer wall of the top of a partition plate (22) which is opposite to the push plate, a long rod (28) is arranged on the inner wall of the bottom of the positioning plate (29), the long rod (28) penetrates through the partition plate (22), and the long rod (28) and the partition plate (22) form sliding fit;
the bottom end of the long rod (28) and the outer wall of the bottom of the partition plate (22) are fixedly connected with the same buffer piece (10), and the buffer piece (10) wraps the outer wall of the long rod (28); the top end of the long rod (28) is connected with a limiting plate (20) through a sliding part;
the sliding part comprises a connecting block which is rotatably connected to the top end of the long rod (28) and a movable groove (27) which is arranged on the outer wall of one side of the limiting plate (20).
7. The device for detecting the deformation of the concrete in the low-temperature environment as claimed in claim 6, wherein the same displacement meter B (33) is fixedly connected to one opposite side surface of the two linkage plates (35);
the bottom end of the long rod (28) is fixedly connected with a displacement meter A (30).
8. The device for detecting the deformation of the concrete in the low-temperature environment according to claim 1, wherein a top support member (5) is fixedly connected to the outer wall of the top of the cover (6), a telescopic press plate (23) in an L-shaped structure is fixedly connected to the extending end of the top support member (5), a thermal insulation pad (25) is arranged on the bottom surface of the telescopic press plate (23), and a pressure sensor is fixed to the inner wall of the thermal insulation pad (25).
9. The device for testing the deformation quantity of the concrete in the low-temperature environment according to claim 8, wherein an insulating layer is arranged on the inner wall surface of the refrigeration box (2); the sealing strip (24) is arranged on the peripheral edge of the bottom of the sealing cover (6);
the outer wall of one side of the refrigeration box (2) is fixedly connected with a temperature detector (4);
the refrigerator is characterized in that a sliding rail (7) is arranged on the outer wall of one side of the refrigerating box (2), and the inner wall of the sliding rail (7) is connected with a box door (8) in a sliding mode through a sliding block.
10. A test method of a detection device for testing the deformation quantity of concrete in a low-temperature environment is characterized by comprising the following steps:
s1: conveying the concrete sample to be tested to the top end of the refrigerating box (2) through the first material conveying part and the second material conveying part, and lifting the sealing cover (6) under the linkage of the second material conveying part to open the refrigerating chamber;
s2: transferring the concrete sample to be tested to a fixing block (21), fixing the position of the concrete sample to be tested by using a sample clamping part, a long rod (28) and a push plate, and adjusting a material conveying part to control a sealing cover (6) to move downwards to close a refrigerating chamber;
s3: different low-temperature test stages and corresponding test duration parameters of the concrete test piece are adjusted through the control panel (3);
s4: detecting the displacement distance between two linkage plates (35) in different test stages according to a displacement meter B (33), and detecting the displacement distance between the bottom surface of a separation plate (22) and the bottom end of a long rod (28) in different test stages according to a displacement meter A (30) to obtain deformation quantity results of the peripheral size and thickness of the concrete test piece;
s5: the pressure of the telescopic pressing plate (23) for pressing down the upper surface of the concrete test piece is adjusted through the supporting piece (5), and the compression deformation resistance quantity of the concrete test piece at different low temperature stages is obtained.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210605078.0A CN115014983A (en) | 2022-05-30 | 2022-05-30 | Detection device for testing deformation of concrete in low-temperature environment and testing method thereof |
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| CN202210605078.0A CN115014983A (en) | 2022-05-30 | 2022-05-30 | Detection device for testing deformation of concrete in low-temperature environment and testing method thereof |
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| CN202210605078.0A Pending CN115014983A (en) | 2022-05-30 | 2022-05-30 | Detection device for testing deformation of concrete in low-temperature environment and testing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116660309A (en) * | 2023-07-31 | 2023-08-29 | 德阳市重装检测有限责任公司 | Device and method for measuring thermal-cold deformation performance of material in real time |
| CN116990117A (en) * | 2023-09-26 | 2023-11-03 | 德阳利宇风和新材料有限公司 | Quality testing equipment and method for superconductive aluminum-based copper-clad plate |
| CN117129343A (en) * | 2023-08-09 | 2023-11-28 | 昆明理工大学 | Low-temperature environment building material experimental device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090077524A (en) * | 2008-01-11 | 2009-07-15 | 충남대학교산학협력단 | Tester and test method for mechanical properties of concrete at high tempreature |
| KR101734360B1 (en) * | 2016-04-05 | 2017-05-12 | 원상연 | Bending And Fatigue Tester Of Coldest place Building Material |
| CN111879615A (en) * | 2020-08-06 | 2020-11-03 | 吴天俊 | Concrete compressive strength detection device |
-
2022
- 2022-05-30 CN CN202210605078.0A patent/CN115014983A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090077524A (en) * | 2008-01-11 | 2009-07-15 | 충남대학교산학협력단 | Tester and test method for mechanical properties of concrete at high tempreature |
| KR101734360B1 (en) * | 2016-04-05 | 2017-05-12 | 원상연 | Bending And Fatigue Tester Of Coldest place Building Material |
| CN111879615A (en) * | 2020-08-06 | 2020-11-03 | 吴天俊 | Concrete compressive strength detection device |
Non-Patent Citations (1)
| Title |
|---|
| MENGXIANG WANG: "An Experimental Study on Mechanical Properties and Fracture Characteristics of Saturated Concrete under Coupling Effect of Low Temperature and Dynamic Load", GEOFLUIDS, 20 September 2022 (2022-09-20) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116660309A (en) * | 2023-07-31 | 2023-08-29 | 德阳市重装检测有限责任公司 | Device and method for measuring thermal-cold deformation performance of material in real time |
| CN116660309B (en) * | 2023-07-31 | 2023-10-03 | 德阳市重装检测有限责任公司 | Method for measuring thermal-cold deformation performance of material in real time |
| CN117129343A (en) * | 2023-08-09 | 2023-11-28 | 昆明理工大学 | Low-temperature environment building material experimental device |
| CN117129343B (en) * | 2023-08-09 | 2024-05-14 | 昆明理工大学 | Low-temperature environment building material experimental device |
| CN116990117A (en) * | 2023-09-26 | 2023-11-03 | 德阳利宇风和新材料有限公司 | Quality testing equipment and method for superconductive aluminum-based copper-clad plate |
| CN116990117B (en) * | 2023-09-26 | 2024-01-12 | 德阳利宇风和新材料有限公司 | Quality testing equipment and method for superconductive aluminum-based copper-clad plate |
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