CN113295854A - Concrete anti-cracking performance testing device - Google Patents
Concrete anti-cracking performance testing device Download PDFInfo
- Publication number
- CN113295854A CN113295854A CN202110510127.8A CN202110510127A CN113295854A CN 113295854 A CN113295854 A CN 113295854A CN 202110510127 A CN202110510127 A CN 202110510127A CN 113295854 A CN113295854 A CN 113295854A
- Authority
- CN
- China
- Prior art keywords
- shell
- concrete
- base
- testing device
- electric putter
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; ceramics; glass; bricks
- G01N33/383—Concrete, cement
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/18—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Ceramic Engineering (AREA)
- Automation & Control Theory (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a concrete anti-cracking performance testing device, relates to the technical field of concrete detection, and aims to solve the problems that the existing testing device has more bubbles inside concrete and a single internal environment in the testing process. The utility model discloses a heating device, including shell, base, transmission bottom plate, fan, atomizing device, atomizer, atomizing device, the top of shell is provided with the electron magnifying glass, the inside intermediate position department of shell installs the base, the bottom of shell is provided with transmission bottom plate, the inside front and back end of transmission bottom plate all is provided with the tooth's socket, the intermediate position department of base upper end is provided with the centre form, the external mold is installed to the periphery of base upper end, it has the concrete test piece to fill between centre form and the external mold, heating device is installed to the inside one side of shell, the fan is installed to one side of heating device, the fixed water smoke export that is provided with of the inside opposite side of shell, atomizing device is installed to the opposite side of shell, the top of shell is provided with the electron magnifying glass, the intermediate position department of shell upper end is provided with the window.
Description
Technical Field
The invention relates to the technical field of concrete detection, in particular to a concrete crack resistance testing device.
Background
Because the tensile strength of the concrete is far less than the compressive strength, the ultimate tensile deformation is very small, and cracks are easy to occur under the action of external force, temperature change, humidity change and the like. Cracking of concrete and reinforced concrete can affect the integrity, durability, and even safety and stability of a building. Fractures can be classified into stress fractures, dry shrinkage fractures and temperature fractures 3. Under the action of external force, the concrete is cracked, which is called stress crack; in the hardening and using processes of concrete, cracks caused by water content change are called dry shrinkage cracks; the cracking problem of concrete, called temperature cracking, caused by temperature stress generated during the process of expansion with heat and contraction with cold due to temperature change, can reduce the overall service life, and people are more and more deeply aware of the importance of the cracking resistance of a concrete structure.
However, the commonly used test methods mainly include a flat plate method, a circular ring method and a single-axis constraint method, wherein the circular ring method is widely used because the device is simple and can ensure that the concrete is subjected to uniform circular constraint, but some problems exist in the test process: firstly, when concrete is filled between the inner mold and the outer mold, more air bubbles are easy to exist in the inner mold, and the subsequent detection effect is seriously influenced; secondly, the internal environment is single, and the anti-cracking performance of the concrete can not be tested independently under the condition of different variables, so that the existing requirements can not be met, and the concrete anti-cracking performance testing device is provided.
Disclosure of Invention
The invention aims to provide a concrete anti-cracking performance testing device to solve the problems that in the testing process of the testing device provided in the background technology, more air bubbles exist in concrete and the internal environment is single.
In order to achieve the purpose, the invention provides the following technical scheme: a concrete anti-cracking performance testing device comprises a shell and a concrete anti-cracking performance testing system, wherein a base is installed at the middle position inside the shell and is connected with the shell in a sliding mode through a sliding supporting rod, a transmission bottom plate is arranged at the bottom of the shell, tooth grooves are formed in the front end and the rear end inside the transmission bottom plate, an inner mold is arranged at the middle position of the upper end of the base and is integrated with the base, an outer mold is installed on the periphery of the upper end of the base and is fixed with the base through a clamping groove, a concrete testing piece is filled between the inner mold and the outer mold, a heating device is installed on one side inside the shell, two fans are installed on one side of the heating device and extend to the outside of the shell, a water mist outlet is fixedly formed in the other side inside the shell, and an atomizing device is installed on the other side of the shell, and the atomizing device and the water mist outlet are sealed and fixed through a connecting pipe, the electronic magnifier is arranged above the shell, a window is arranged in the middle of the upper end of the shell, and the window is connected with the shell through a clamping groove.
Preferably, the intermediate position department of shell bottom is provided with first installation cavity, the internally mounted of first installation cavity has first electric putter, and first electric putter installs two, first driving motor is installed to first electric putter's upper end, and first driving motor passes through the screw fixation with first electric putter, first driving motor's output shaft fixed mounting has sector gear, and sector gear and tooth's socket looks adaptation, the ring centre angle of the gear wheel of sector gear is one hundred sixty degrees.
Preferably, both sides of shell bottom all are provided with the second installation cavity, the internally mounted of second installation cavity has second electric putter, and second electric putter is provided with two, second electric putter's upper end fixed mounting has second driving motor, second driving motor's output shaft fixed mounting has the eccentric wheel, and the one end and the base of eccentric wheel laminate mutually, two syntropy is with fast and orientation is unified between the eccentric wheel.
Preferably, a temperature sensor is installed on one side of the rear end inside the shell, the temperature sensor and the shell are fixed through screws, an electric heating tube is installed inside the heating device, the heating device and the temperature sensor are electrically connected through a single chip microcomputer, the light lamps are installed on two sides of the upper end inside the shell, and the light lamps are fixedly connected with the shell.
Preferably, the opposite side fixed mounting of the inside rear end of shell has humidity transducer, humidity transducer passes through singlechip electric connection with atomizing device, the transducer is all installed to the inside both sides of atomizing device, the upper end of transducer is provided with the ultrasonic wave and vibrates the piece, and ultrasonic wave vibrates piece and transducer electric connection.
Preferably, the lower extreme of concrete test spare is equipped with ten resistance strain gauges that are annular evenly distributed, and the lower extreme and the base fixed connection of resistance strain gauge, the upper end of concrete test spare is equipped with eight and is annular evenly distributed's the flower that meets an emergency, resistance strain gauge and the one end of the flower that meets an emergency all are connected with wireless dynamic resistance and meet an emergency test transceiver module, wireless dynamic resistance meets an emergency and tests transceiver module's one end and connects in the computer.
Preferably, one end of the electronic magnifier is connected with an image acquisition module, one end of the image acquisition module is connected with an image analysis module, and one end of the image analysis module is connected with a computer.
Preferably, the below of shell rear end is provided with slider, slider's internal rotation installs the threaded rod, the inside one side fixed mounting of slider has servo motor, and servo motor's output shaft passes through the shaft coupling transmission with the one end of threaded rod and is connected, the externally mounted of threaded rod has the bracing piece, bracing piece and threaded rod looks adaptation, and the upper end of bracing piece extends to slider's top, the top fixed mounting of bracing piece front end has third electric putter, third electric putter's one end is fixed through fixed cover with the electron magnifying glass.
Preferably, a connecting pad is arranged between the shell and the base, two ends of the connecting pad are respectively fixedly connected with the shell and the base, and the connecting pad is of a corrugated structure.
Preferably, the inner wall of the outer mold is provided with a high molecular polytetrafluoroethylene film, and the high molecular polytetrafluoroethylene film is adhered and fixed with the outer mold.
Compared with the prior art, the invention has the beneficial effects that:
1. the base and the shell adopt a sliding connection structure, after concrete is filled between the inner mold and the outer mold, the first electric push rod is firstly opened to drive the first driving motor to lift, so that the sector gear extends into the tooth socket inside the transmission bottom plate and is meshed with the tooth socket, then the first driving motor is started to drive the sector gear to rotate, the tooth socket inside the transmission bottom plate moves towards one side inside the shell under the meshing action of the tooth socket and the sector gear, the tooth ring gradually contacts the tooth socket on the other side along with the continuous rotation of the sector gear, so that the tooth socket on one side is not meshed with the sector gear, and the transmission bottom plate moves towards the other side inside the shell under the rotation of the sector gear due to the opposite direction, and the base forms transverse reciprocating movement in the shell along with the continuous rotation of the sector gear, concrete between the inside and outside mould also moves thereupon this moment, inside bubble constantly takes place the extrusion, thereby get rid of the outside, later first electric putter drives first driving motor shrink, second electric putter drives second driving motor and rises, through opening second driving motor, drive two eccentric wheels and rotate, two eccentric wheels keep syntropy with fast and the orientation is unified this moment, the round of whenever rotating, the contact takes place for the base of being convenient for, so under high-speed rotation, form the violent vibrations of base, compare with sector gear, the contact frequency of eccentric wheel is higher, so the amplitude also improves thereupon, thereby the inside bubble takes place violent collision and discharges to the outside gradually, through mutually supporting between them, can form the discharge to inside bubble fast, avoid can subsequent test bring the influence.
2. According to the invention, the temperature sensor and the humidity sensor are respectively arranged in the shell, the concrete test piece after vibration can be tested in a specific environment only after a certain time of curing, the optimal temperature is 20 ℃, the environmental humidity is 25%, the internal environment can be known through the temperature sensor and the humidity sensor so as to ensure the curing effect of curing the concrete test piece, the accuracy of subsequent testing is improved, after curing is completed, the concrete test piece is tested in the environment with the humidity of 35 ℃ and 55%, the heating device is started to electrify the electric heating tube to heat the ambient air, hot air is transmitted to the concrete test piece under the action of the fan to form temperature increase, then the atomization device is started, the ultrasonic vibration piece is enabled to generate ultrasonic frequency mechanical vibration through the excitation of the oscillation circuit to the energy converter by utilizing the self piezoelectric effect of the energy converter, through the high frequency resonance of ultrasonic oscillation piece, throw water away from the surface of water and produce the elegant water smoke of nature, the water smoke passes through inside the connecting pipe enters into the shell, in order to reach target humidity environment, reach and set for temperature and humidity after, close heating device and atomizing device, open the illuminator, the form is free parallel light, in order to simulate the sunlight, release certain heat simultaneously, form the invariant of inside temperature, through this kind of mode, can the at utmost reduce the change of concrete in real environment, further improve the precision of anti crack performance test.
3. The invention can automatically measure, display and record the multipoint stress and the strain change of the concrete test piece by arranging ten resistance strain gauges which are uniformly distributed in a ring shape at the bottom of the base, and the upper end of the concrete test piece after the maintenance is finished is adhered with six strain gauges which are uniformly distributed in a ring shape, and the detection data is sent to a computer through a wireless dynamic resistance strain test transceiver module, thereby accurately observing the generation of cracks, recording the generation position, the length, the width and the time of the cracks, and calculating the interval time of the first jump of the vertical surface penetrating the cracks, meanwhile, the upper end of the shell is provided with an electronic magnifier which can carry out image acquisition on the upper end of the concrete test piece, and simultaneously, the display is carried out on the computer, the working personnel can carry out the test record according to the content of the images, and simultaneously under the matching of an image analysis module, the method can calculate the crack change of the surface of the concrete test piece synchronously to form a real-time change diagram of the surface crack of the concrete test piece, and combines with the dynamic resistance strain test to obtain the crack resistance of the concrete more intuitively and accurately.
4. According to the electronic magnifier, the sliding device is arranged below the rear end of the shell, when the electronic magnifier needs to be transversely adjusted, only the servo motor needs to be started, the output shaft of the servo motor drives the threaded rod to rotate, the rotary motion is converted into linear motion under the action of friction force between the threaded rod and the lower end of the supporting rod, the supporting rod is driven to transversely displace, and therefore the transverse adjustment of the electronic magnifier is achieved.
Drawings
FIG. 1 is a schematic view of the overall internal structure of the present invention;
FIG. 2 is a perspective view of the housing of the present invention;
FIG. 3 is a schematic view of a base structure of the present invention;
FIG. 4 is a rear view of the housing of the present invention;
FIG. 5 is a schematic diagram of a system for testing crack resistance of concrete according to the present invention.
In the figure: 1. a housing; 2. a base; 3. an inner mold; 4. an outer mold; 5. a concrete test piece; 6. a resistance strain gauge; 7. straining flowers; 8. a drive floor; 9. a first mounting cavity; 10. a first electric push rod; 11. a first drive motor; 12. a sector gear; 13. a second mounting cavity; 14. a second drive motor; 15. a second electric push rod; 16. a sliding support bar; 17. a connecting pad; 18. a window; 19. a fan; 20. a heating device; 21. an electric heating tube; 22. a light; 23. a humidity sensor; 24. a temperature sensor; 25. a support bar; 26. fixing a sleeve; 27. an electronic magnifier; 28. a water mist outlet; 29. an atomizing device; 30. a transducer; 31. an ultrasonic oscillation sheet; 32. a connecting pipe; 33. a third electric push rod; 34. a sliding device; 35. a tooth socket; 36. a high molecular polytetrafluoroethylene film; 37. a threaded rod; 38. a servo motor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, an embodiment of the present invention is shown: a concrete anti-cracking performance testing device comprises a shell 1 and a concrete anti-cracking performance testing system, wherein a base 2 is installed at the middle position inside the shell 1, the base 2 is connected with the shell 1 in a sliding mode through a sliding supporting rod 16, a transmission bottom plate 8 is arranged at the bottom of the shell 1, tooth grooves 35 are formed in the front end and the rear end inside the transmission bottom plate 8, an inner mold 3 is arranged at the middle position of the upper end of the base 2, the inner mold 3 and the base 2 are of an integral structure, an outer mold 4 is installed on the periphery of the upper end of the base 2, the outer mold 4 and the base 2 are fixed through clamping grooves, a concrete testing piece 5 is filled between the inner mold 3 and the outer mold 4, a heating device 20 is installed on one side inside the shell 1, two fans 19 are installed on one side of the heating device 20, the fans 19 extend to the outside of the shell 1, and a water mist outlet 28 is fixedly formed in the other side inside the shell 1, an atomizing device 29 is installed on the other side of the shell 1, the atomizing device 29 and the water mist outlet 28 are fixed in a sealing mode through a connecting pipe 32, an electronic magnifier 27 is arranged above the shell 1, a window 18 is arranged in the middle of the upper end of the shell 1, and the window 18 is connected with the shell 1 through a clamping groove.
Further, the intermediate position department of shell 1 bottom is provided with first installation cavity 9, the internally mounted of first installation cavity 9 has first electric putter 10, and first electric putter 10 installs two, first driving motor 11 is installed to first electric putter 10's upper end, and first driving motor 11 passes through the screw fixation with first electric putter 10, first driving motor 11's output shaft fixed mounting has sector gear 12, and sector gear 12 and tooth's socket 35 looks adaptation, sector gear 12's ring gear central angle is one hundred sixty degrees, along with sector gear 12's continuous rotation down, make base 2 form horizontal reciprocating motion in the inside of shell 1, the concrete between the interior outer mould also moves thereupon this moment, inside bubble constantly takes place the extrusion, thereby get rid of the outside.
Further, both sides of shell 1 bottom all are provided with second installation cavity 13, the internally mounted of second installation cavity 13 has second electric putter 15, and second electric putter 15 is provided with two, the upper end fixed mounting of second electric putter 15 has second driving motor 14, the output shaft fixed mounting of second driving motor 14 has eccentric wheel 39, and the one end of eccentric wheel 39 is laminated with base 2 mutually, syntropy is with fast and the orientation is unified between two eccentric wheels 39, every turn round, be convenient for base 2 takes place once the contact, so under high-speed rotation, form the violent vibrations of base 2, compare with sector gear 12, eccentric wheel 39's contact frequency is higher, so the amplitude also improves thereupon, thereby inside bubble takes place violent collision and discharges to outside gradually.
Further, a temperature sensor 24 is installed on one side of the rear end inside the shell 1, the temperature sensor 24 is fixed to the shell 1 through screws, an electric heating tube 21 is installed inside the heating device 20, the heating device 20 is electrically connected with the temperature sensor 24 through a single chip microcomputer, the illuminating lamps 22 are installed on two sides of the upper end inside the shell 1, the illuminating lamps 22 are fixedly connected with the shell 1, the maintenance environment temperature is 20 ℃, the test temperature is 35 ℃, the illuminating lamps 22 are free parallel light in shape, sunlight is simulated, certain heat is released simultaneously, and the internal temperature is constant.
Further, the opposite side fixed mounting of the inside rear end of shell 1 has humidity transducer 23, humidity transducer 23 passes through singlechip electric connection with atomizing device 29, transducer 30 is all installed to the inside both sides of atomizing device 29, transducer 30's upper end is provided with ultrasonic wave and vibrates piece 31, and ultrasonic wave vibrates piece 31 and transducer 30 electric connection, and through this kind of mode, can the at utmost restore the change of concrete in actual environment, further improve the precision of anti crack performance test.
Furthermore, ten resistance strain gauges 6 which are uniformly distributed in a ring shape are arranged at the lower end of the concrete test piece 5, the lower end of the resistance strain gauge 6 is fixedly connected with the base 2, the upper end of the concrete test piece 5 is provided with eight strain flowers 7 which are uniformly distributed in a ring shape, one ends of the resistance strain gauge 6 and the strain flowers 7 are both connected with a wireless dynamic resistance strain test transceiver module, one end of the wireless dynamic resistance strain test transceiver module is connected with a computer, the resistance strain gauge 6 and the strain flowers 7 can automatically measure, display and record the multipoint stress and the strain change of the concrete test piece, and the detection data is sent to the computer through the wireless dynamic resistance strain test transceiver module, therefore, the generation of the crack is accurately observed, the generation position, the length and the width of the crack and the generation time of the crack are recorded, and the interval time of the first jump of the vertical surface penetrating the crack is calculated.
Further, the one end of electron magnifying glass 27 is connected with the image acquisition module, the one end of image acquisition module is connected with the image analysis module, the one end of image analysis module is connected in the computer, the staff can test the record according to the picture content, simultaneously under the cooperation of image analysis module, can calculate the crack change on concrete test piece surface in step, form the real-time change picture of concrete test piece surface crack, combine together with the dynamic resistance strain test, obtain the anti-cracking performance of concrete more directly perceived and accurately.
Further, the below of shell 1 rear end is provided with slider 34, threaded rod 37 is installed in slider 34's internal rotation, the inside one side fixed mounting of slider 34 has servo motor 38, and servo motor 38's output shaft passes through the shaft coupling transmission with threaded rod 37's one end and is connected, threaded rod 37's externally mounted has bracing piece 25, bracing piece 25 and threaded rod 37 looks adaptation, and the upper end of bracing piece 25 extends to slider 34's top, the top fixed mounting of bracing piece 25 front end has third electric putter 33, the one end of third electric putter 33 is fixed through fixed cover 26 with electron magnifying glass 27, under threaded rod 37 and the mutually supporting of third electric putter 33, realize the nimble motion of electron magnifying glass 27.
Further, be provided with between shell 1 and the base 2 and connect the pad 17, and connect the both ends of pad 17 respectively with shell 1 and base 2 fixed connection, connect pad 17 and be the ripple structure, connect the elastic construction of pad 17 and can cooperate base 2 to remove, avoid unnecessary concrete to enter into the inside vibration environment that influences of shell 1.
Further, the inner wall of the outer mold 4 is provided with the polymer polytetrafluoroethylene film 36, the polymer polytetrafluoroethylene film 36 is adhered and fixed with the outer mold 4, after the concrete test piece 5 is cured, the outer mold 4 can be separated from the concrete test piece 5 easily under the action of the polymer polytetrafluoroethylene film 36 when being separated, and the outer mold 4 is prevented from pulling and affecting the test effect.
The working principle is as follows: when the concrete filling machine is used, after concrete is filled between the inner mold 3 and the outer mold 4, the first electric push rod 10 is firstly started to drive the first driving motor 11 to lift, the first driving motor 11 is started to enable the sector gear 12 to rotate, the base 2 moves towards one side inside the shell 1, along with the continuous rotation of the sector gear 12, the toothed ring gradually contacts the toothed groove 35 at the other side, so that the toothed groove 35 at one side is not meshed with the sector gear 12, due to the fact that the direction of the toothed groove 35 is opposite, under the rotation of the sector gear 12, the transmission bottom plate 8 moves towards the other side inside the shell 1, along with the continuous rotation of the sector gear 12, the base 2 forms transverse reciprocating movement inside the shell 1, at the moment, the concrete between the inner mold and the outer mold moves along with the toothed groove, bubbles inside are continuously extruded, the outside is removed, and then the first electric push rod 10 drives the first driving motor 11 to shrink, the second electric push rod 15 drives the second driving motor 14 to rise, the second driving motor 14 is started to drive the two eccentric wheels 39 to rotate, each time the second driving motor 14 rotates for one circle, the base 2 is convenient to contact once, then, under high-speed rotation, violent vibration of the base 2 is formed, compared with the sector gear 12, the contact frequency of the eccentric wheels 39 is higher, then, the amplitude is also improved, internal bubbles are violently collided to be gradually discharged to the outside, the vibrated concrete testing piece 5 can be tested under a specific environment only by maintenance for a certain time, the optimal temperature is 20 ℃, the environmental humidity is 25%, the internal environment can be known through the temperature sensor 24 and the humidity sensor 23, the outer die 4 is detached after curing, the heating device 20 is started to electrify the electric heating tube 21, ambient air is heated, and hot air is transferred to the concrete testing piece 5 under the action of the fan 19, the temperature is raised, then the atomization device 29 is started, the self piezoelectric effect of the transducer 30 is utilized, the excitation effect of the oscillation circuit on the transducer 30 is utilized, the ultrasonic oscillation sheet 31 generates ultrasonic frequency mechanical vibration, water is thrown off the water surface through the high-frequency resonance of the ultrasonic oscillation sheet 31 to generate naturally drifting water mist, the water mist enters the shell 1 through the connecting pipe 32 to achieve a target humidity environment, after the set temperature and humidity are achieved, the heating device 20 and the atomization device 29 are closed, the illuminator 22 is started, the form is free parallel light to simulate sunlight, meanwhile, certain heat is released to form the constancy of the internal temperature, the resistance strain sheet 6 and the strain flower 7 are attached to the concrete test piece 5, the multipoint stress and the strain change of the concrete test piece can be automatically measured, displayed and recorded, and the detection data are sent to a computer through a wireless dynamic resistance strain test transceiver module, thereby accurately observe the crack generation, record the crack generation position, length, width and crack generation time, and calculate the interval time that the first jump of facade runs through the crack appearance, install electronic magnifying glass 27 in the upper end of shell 1 simultaneously, electronic magnifying glass 27 can carry out image acquisition to the upper end of concrete test piece 5, show on the computer simultaneously, the staff can test the record according to the picture content, simultaneously under the cooperation of image analysis module, can calculate the crack change on concrete test piece surface in step, form the real-time change picture of concrete test piece surface crack, combine with the dynamic resistance strain test, obtain the crack resistance performance of concrete more directly perceived and accurately.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The utility model provides a concrete crack resistance capability test device, includes shell (1) and concrete crack resistance capability test system, its characterized in that: the concrete testing device is characterized in that a base (2) is installed at the middle position inside the shell (1), the base (2) is connected with the shell (1) in a sliding mode through a sliding support rod (16), a transmission bottom plate (8) is arranged at the bottom of the shell (1), tooth grooves (35) are formed in the front end and the rear end inside the transmission bottom plate (8), an inner die (3) is arranged at the middle position of the upper end of the base (2), the inner die (3) and the base (2) are of an integral structure, an outer die (4) is installed on the periphery of the upper end of the base (2), the outer die (4) and the base (2) are fixed through clamping grooves, a concrete testing piece (5) is filled between the inner die (3) and the outer die (4), a heating device (20) is installed on one side inside the shell (1), fans (19) are installed on one side of the heating device (20), and two fans (19) are installed on the inner die (3), and fan (19) extend to the outside of shell (1), the fixed water smoke export (28) that is provided with of inside opposite side of shell (1), atomizing device (29) are installed to the opposite side of shell (1), and atomizing device (29) and water smoke export (28) are sealed fixed through connecting pipe (32), the top of shell (1) is provided with electronic magnifier (27), intermediate position department of shell (1) upper end is provided with window (18), and window (18) pass through the draw-in groove with shell (1) and are connected.
2. The concrete crack resistance testing device of claim 1, characterized in that: the utility model discloses a fan-shaped gear, including shell (1), intermediate position department of shell (1) bottom is provided with first installation cavity (9), the internally mounted of first installation cavity (9) has first electric putter (10), and first electric putter (10) install two, first driving motor (11) are installed to the upper end of first electric putter (10), and first driving motor (11) pass through the screw fixation with first electric putter (10), the output shaft fixed mounting of first driving motor (11) has sector gear (12), and sector gear (12) and tooth's socket (35) looks adaptation, the ring gear heart angle of sector gear (12) is one hundred sixty degrees.
3. The concrete crack resistance testing device of claim 1, characterized in that: the both sides of shell (1) bottom all are provided with second installation cavity (13), the internally mounted of second installation cavity (13) has second electric putter (15), and second electric putter (15) are provided with two, the upper end fixed mounting of second electric putter (15) has second driving motor (14), the output shaft fixed mounting of second driving motor (14) has eccentric wheel (39), and the one end of eccentric wheel (39) is laminated mutually with base (2), two syntropy is with fast and the orientation is unified between eccentric wheel (39).
4. The concrete crack resistance testing device of claim 1, characterized in that: temperature sensor (24) are installed to one side of the inside rear end of shell (1), and temperature sensor (24) pass through the screw fixation with shell (1), the internally mounted of heating device (20) has electrothermal tube (21), heating device (20) pass through singlechip electric connection with temperature sensor (24), light (22) are all installed to the both sides of the inside upper end of shell (1), and light (22) and shell (1) fixed connection.
5. The concrete crack resistance testing device of claim 1, characterized in that: the opposite side fixed mounting of the inside rear end of shell (1) has humidity transducer (23), humidity transducer (23) and atomizing device (29) pass through singlechip electric connection, transducer (30) are all installed to the inside both sides of atomizing device (29), the upper end of transducer (30) is provided with ultrasonic wave and vibrates piece (31), and ultrasonic wave vibrates piece (31) and transducer (30) electric connection.
6. The concrete crack resistance testing device of claim 1, characterized in that: the lower extreme of concrete test spare (5) is equipped with ten resistance strain gauges (6) that are annular evenly distributed, and the lower extreme and base (2) fixed connection of resistance strain gauge (6), the upper end of concrete test spare (5) is equipped with eight and is annular evenly distributed's strain flower (7), the one end that resistance strain gauge (6) and strain flower (7) all is connected with wireless dynamic resistance strain test transceiver module, wireless dynamic resistance strain test transceiver module's one end is connected in the computer.
7. The concrete crack resistance testing device of claim 1, characterized in that: one end of the electronic magnifier (27) is connected with an image acquisition module, one end of the image acquisition module is connected with an image analysis module, and one end of the image analysis module is connected with a computer.
8. The concrete crack resistance testing device of claim 1, characterized in that: the below of shell (1) rear end is provided with slider (34), threaded rod (37) are installed to the internal rotation of slider (34), the inside one side fixed mounting of slider (34) has servo motor (38), and the output shaft of servo motor (38) passes through the shaft coupling transmission with the one end of threaded rod (37) and is connected, the externally mounted of threaded rod (37) has bracing piece (25), bracing piece (25) and threaded rod (37) looks adaptation, and the upper end of bracing piece (25) extends to the top of slider (34), the top fixed mounting of bracing piece (25) front end has third electric putter (33), the one end of third electric putter (33) is fixed through fixed cover (26) with electron magnifying glass (27).
9. The concrete crack resistance testing device of claim 1, characterized in that: be provided with between shell (1) and base (2) connecting pad (17), and the both ends of connecting pad (17) respectively with shell (1) and base (2) fixed connection, connecting pad (17) are the ripple construction.
10. The concrete crack resistance testing device of claim 1, characterized in that: the inner wall of the outer mold (4) is provided with a high molecular polytetrafluoroethylene film (36), and the high molecular polytetrafluoroethylene film (36) is adhered and fixed with the outer mold (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110510127.8A CN113295854A (en) | 2021-05-11 | 2021-05-11 | Concrete anti-cracking performance testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110510127.8A CN113295854A (en) | 2021-05-11 | 2021-05-11 | Concrete anti-cracking performance testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113295854A true CN113295854A (en) | 2021-08-24 |
Family
ID=77321248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110510127.8A Pending CN113295854A (en) | 2021-05-11 | 2021-05-11 | Concrete anti-cracking performance testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113295854A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199990A (en) * | 2021-12-31 | 2022-03-18 | 中钢新型材料股份有限公司 | Device and method for measuring content of element impurities in ultra-pure graphite material |
| CN114705842A (en) * | 2022-06-06 | 2022-07-05 | 中建安装集团有限公司 | Simulation monitoring system and method for microbial self-repairing concrete cracks |
| CN115415581A (en) * | 2022-09-23 | 2022-12-02 | 东莞市纳百医疗科技有限公司 | Deep hole drill bit structure |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581642A (en) * | 2009-06-11 | 2009-11-18 | 中国京冶工程技术有限公司 | Detection method of temperature shrinking stress of overlong concrete structure |
| CN103257220A (en) * | 2012-02-22 | 2013-08-21 | 北京中企卓创科技发展有限公司 | Concrete early-stage crack resistance test device and test method |
| CN105352876A (en) * | 2015-09-09 | 2016-02-24 | 中国水利水电科学研究院 | Real environment-based concrete cracking whole process test apparatus and method |
| CN106959298A (en) * | 2017-04-26 | 2017-07-18 | 大连理工大学 | Hydraulic structure concrete crack real time on-line monitoring system based on machine vision |
| CN206747013U (en) * | 2017-05-30 | 2017-12-15 | 赵建东 | One kind is used for screening plant after Chinese medicine crushes |
| CN207383161U (en) * | 2017-11-03 | 2018-05-22 | 贵溪市樟坪畲族乡华芳茶叶种植专业合作社 | A kind of agricultural Catchwork irrigation device |
| CN109115170A (en) * | 2018-11-01 | 2019-01-01 | 山东科技大学 | A kind of concrete filled steel tube internal strain monitoring device and method |
| CN110132989A (en) * | 2019-06-13 | 2019-08-16 | 天津路联智通交通科技有限公司 | A kind of distress in concrete detection device, method and terminal system |
| CN210305965U (en) * | 2019-08-13 | 2020-04-14 | 赵艳蕊 | Pipeline cutting device for municipal works |
| CN210401422U (en) * | 2019-08-05 | 2020-04-24 | 江苏新水工程检测有限公司 | Concrete crack resistance detection device for building and construction |
| CN211363552U (en) * | 2019-12-27 | 2020-08-28 | 天津市龙亨金属制品有限公司 | Resin concrete production mould |
| CN211374759U (en) * | 2019-10-11 | 2020-08-28 | 中交二公局第三工程有限公司 | Fiber concrete early-age shrinkage crack test device |
| CN112519090A (en) * | 2020-11-16 | 2021-03-19 | 东莞市米儿塑胶原料有限公司 | Polyurethane resin forming device with heat insulation performance and using method thereof |
-
2021
- 2021-05-11 CN CN202110510127.8A patent/CN113295854A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581642A (en) * | 2009-06-11 | 2009-11-18 | 中国京冶工程技术有限公司 | Detection method of temperature shrinking stress of overlong concrete structure |
| CN103257220A (en) * | 2012-02-22 | 2013-08-21 | 北京中企卓创科技发展有限公司 | Concrete early-stage crack resistance test device and test method |
| CN105352876A (en) * | 2015-09-09 | 2016-02-24 | 中国水利水电科学研究院 | Real environment-based concrete cracking whole process test apparatus and method |
| CN106959298A (en) * | 2017-04-26 | 2017-07-18 | 大连理工大学 | Hydraulic structure concrete crack real time on-line monitoring system based on machine vision |
| CN206747013U (en) * | 2017-05-30 | 2017-12-15 | 赵建东 | One kind is used for screening plant after Chinese medicine crushes |
| CN207383161U (en) * | 2017-11-03 | 2018-05-22 | 贵溪市樟坪畲族乡华芳茶叶种植专业合作社 | A kind of agricultural Catchwork irrigation device |
| CN109115170A (en) * | 2018-11-01 | 2019-01-01 | 山东科技大学 | A kind of concrete filled steel tube internal strain monitoring device and method |
| CN110132989A (en) * | 2019-06-13 | 2019-08-16 | 天津路联智通交通科技有限公司 | A kind of distress in concrete detection device, method and terminal system |
| CN210401422U (en) * | 2019-08-05 | 2020-04-24 | 江苏新水工程检测有限公司 | Concrete crack resistance detection device for building and construction |
| CN210305965U (en) * | 2019-08-13 | 2020-04-14 | 赵艳蕊 | Pipeline cutting device for municipal works |
| CN211374759U (en) * | 2019-10-11 | 2020-08-28 | 中交二公局第三工程有限公司 | Fiber concrete early-age shrinkage crack test device |
| CN211363552U (en) * | 2019-12-27 | 2020-08-28 | 天津市龙亨金属制品有限公司 | Resin concrete production mould |
| CN112519090A (en) * | 2020-11-16 | 2021-03-19 | 东莞市米儿塑胶原料有限公司 | Polyurethane resin forming device with heat insulation performance and using method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199990A (en) * | 2021-12-31 | 2022-03-18 | 中钢新型材料股份有限公司 | Device and method for measuring content of element impurities in ultra-pure graphite material |
| CN114199990B (en) * | 2021-12-31 | 2023-09-15 | 赛迈科先进材料股份有限公司 | Equipment and method for measuring impurity content of elements of ultra-high purity graphite material |
| CN114705842A (en) * | 2022-06-06 | 2022-07-05 | 中建安装集团有限公司 | Simulation monitoring system and method for microbial self-repairing concrete cracks |
| CN115415581A (en) * | 2022-09-23 | 2022-12-02 | 东莞市纳百医疗科技有限公司 | Deep hole drill bit structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113295854A (en) | Concrete anti-cracking performance testing device | |
| CN108839494A (en) | A kind of production of electronic product is with facilitating cooling embossing device | |
| CN208672451U (en) | A kind of detection device for concrete production | |
| CN219956851U (en) | Guardrail anti-collision detection device | |
| CN109709312A (en) | Wireless penetration controls concrete freeze thawing machine | |
| CN115046718A (en) | Building steel structure anti-seismic toughness detection device and detection method | |
| CN204881943U (en) | Measurement device for fluid friction moment | |
| CN212008114U (en) | Higher concrete compression testing machine of security | |
| CN207763800U (en) | A kind of Weighing module applied to human body three-dimensional scanning device | |
| CN109000904B (en) | Rotor wing unmanned aerial vehicle composite material blade reliability test is equipped under wind sand environment | |
| CN203616238U (en) | Initial viscosity testing machine used for testing adhesive performance of auto muffling films | |
| CN215791509U (en) | Injection mold for end cover of automobile sensor | |
| CN219505319U (en) | Horn bracket forming die | |
| CN213972136U (en) | Resin-based composite material curing monitoring device | |
| CN220789326U (en) | Rolling position and acceleration sensor signal monitoring system | |
| CN213688560U (en) | Digital light guide liquid level meter device of intelligent instrument | |
| CN214895306U (en) | Testing arrangement of epoxy conductive film | |
| CN217941795U (en) | Continuous gelling system equipment for casting steel coating for molding sand | |
| CN211696866U (en) | High accelerated life test box | |
| CN217687130U (en) | Inner wall roughness check out test set is used in mould debugging | |
| CN219737763U (en) | Underwater robot ranging device | |
| CN109827728A (en) | Damping structure anti-acoustic capability test bracket, experimental rig and its method | |
| CN219432911U (en) | Intelligent collector | |
| CN213689242U (en) | High-strength plate glass detection device | |
| CN217131663U (en) | Traction motor oven temperature control monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |