CN213121432U - Full-automatic intelligent concrete elastic modulus tester - Google Patents
Full-automatic intelligent concrete elastic modulus tester Download PDFInfo
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- CN213121432U CN213121432U CN202021822758.0U CN202021822758U CN213121432U CN 213121432 U CN213121432 U CN 213121432U CN 202021822758 U CN202021822758 U CN 202021822758U CN 213121432 U CN213121432 U CN 213121432U
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Abstract
The utility model discloses a full-automatic intelligent concrete elastic modulus tester, which comprises a compression testing machine and a testing machine controller connected with the compression testing machine, wherein the compression testing machine is sequentially provided with a compression machine oil cylinder, a lower pressing plate, a first steel backing plate, a second steel backing plate, a third steel backing plate, a concrete elastic modulus test block and an upper pressing plate from bottom to top; the upper part and the lower part of the concrete elastic modulus test block are respectively sleeved with an elastic modulus instrument upper support and an elastic modulus instrument lower support, four steel string concrete surface strain gauges connected with the tester controller are arranged between the elastic modulus instrument upper support and the elastic modulus instrument lower support, and an elastic modulus instrument positioning device fixed on the concrete elastic modulus test block is arranged below the elastic modulus instrument lower support. The complicated processes of manual line drawing and positioning of the midpoint of the concrete elastic modulus test piece, centering of the concrete elastic modulus test and testing after centering are simplified, and wireless transmission and reception of deformation data are realized.
Description
Technical Field
The utility model relates to a concrete detection device technical field particularly, relates to a full-automatic intelligent concrete elastic modulus tester.
Background
According to the GB/T50081 concrete elasticity modulus test method, firstly, a central line is drawn on a concrete elastic modulus test block manually, then the concrete elastic modulus is tested, the line drawing is time-consuming, the centering process is complicated, the deformation of two sides is not more than 20%, the centering is not easy, the operation is carried out by three persons, two persons read and record, one person controls the load, a group of elastic modulus tests are carried out for 2 hours normally, if the centering treatment is not good, even more than 4 hours is reached, the tests cannot be effectively and rapidly carried out, and a large amount of manpower and material resources are wasted. At present, the existing electronic displacement meter connecting testing machine in China measures the elastic modulus of concrete, a device for positioning a center line of a concrete elastic module test block on the testing machine is not provided, deformation data are connected through a data line, but the installation process of detaching the elastic module meter, the electronic displacement meter and the data line on the testing machine is quite complicated, and the testing efficiency is extremely low.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem among the correlation technique, the utility model provides a full-automatic intelligent concrete elasticity modulus tester only needs one person's operation can realize concrete bullet mould test block quick location central line, and automatic loading, automatic centering, automatic test, automatic recording, string wire concrete surface strain meter measure deformation fixed and deformation data wireless transmission to improve test result's accuracy, reduce intensity of labour.
In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows: a full-automatic intelligent concrete elastic modulus tester comprises a pressure tester and a tester controller connected with the pressure tester, wherein the pressure tester is sequentially provided with a press oil cylinder, a lower pressing plate, a first steel base plate, a second steel base plate, a third steel base plate, a concrete elastic modulus test block and an upper pressing plate from bottom to top; a longitudinal moving device connected with the side face of the first steel base plate is fixedly installed on one side of the lower pressing plate, a transverse moving device connected with the side face of the third steel base plate is fixedly installed on one side of the second steel base plate, and a centering marking line and a test block limiting line are arranged in the middle of the upper side of the third steel base plate; the longitudinal moving device, the transverse moving device and the press machine oil cylinder are all connected with the tester controller; the upper part and the lower part of the concrete bullet mould test block are respectively sleeved with a bullet mould instrument upper support and a bullet mould instrument lower support, four steel string concrete surface strain gauges connected with the tester controller are arranged between the bullet mould instrument upper support and the bullet mould instrument lower support, and a bullet mould instrument positioning device fixed on the concrete bullet mould test block is arranged below the bullet mould instrument lower support.
Further, the driving mechanisms of the longitudinal moving device and the transverse moving device both adopt servo motors.
Furthermore, a first dovetail groove channel matched with the first dovetail type convex strip on the lower side of the first steel base plate is arranged on the upper side of the lower pressing plate; a second dovetail groove channel matched with the first dovetail convex strip on the upper side of the first steel base plate is arranged on the lower side of the second steel base plate, and a second dovetail convex strip perpendicular to the second dovetail groove channel is arranged on the upper side of the second steel base plate; and a third dovetail groove matched with the second dovetail type convex strip is formed in the lower side of the third steel base plate.
Further, a longitudinal nut sleeve connected with the longitudinal moving device is installed on the side surface of the first steel base plate, and the longitudinal moving device is connected with the longitudinal nut sleeve through a telescopic screw rod; and a transverse nut sleeve connected with the transverse moving device is installed on the side surface of the third steel base plate, and the transverse moving device is connected with the transverse nut sleeve through a telescopic screw rod.
Furthermore, an annular ball seat is fixedly arranged on one side of the concrete elastic module test block of the upper pressure plate.
Furthermore, a hemispherical positioning device is arranged at the bottom of the steel string concrete surface strain gauge, triangular clamping pieces in contact with the surface of the concrete elastic module are arranged at the upper end and the lower end of the steel string concrete surface strain gauge, the steel string concrete surface strain gauge is connected with a 12V direct-current power supply, and a wireless transmission deformation data device is arranged in the steel string concrete surface strain gauge.
Further, play the right angle frame of mould appearance positioner for the L type, it is connected with the bracing piece through adjusting device to play two ends of mould appearance positioner, bracing piece top cover is equipped with the sleeve, the sleeve outside is equipped with and passes the sleeve with the first locating pin of bracing piece, first locating pin one side through the patchcord with the second locating pin of bracing piece side is connected, telescopic top is equipped with the recess that matches with hemispherical positioner, telescopic top with the bottom distance of string concrete surface strain gauge is 5mm-10 mm.
Furthermore, the elastic modulus instrument upper support and the elastic modulus instrument lower support are rectangular frame bodies formed by sequentially and movably connecting four steel bars, and the closed parts of the rectangular frame bodies are fastened through screws and nuts.
Furthermore, the upper support of the elastic modulus instrument and the steel plate in the lower support of the elastic modulus instrument are sequentially and movably connected through hinges
The utility model has the advantages that: the complicated processes of manual line drawing and positioning of the middle points of the concrete elastic module test blocks, centering of the elastic modulus of the concrete and testing after centering, wireless transmission and reception of deformation data are solved, and the device is simple and convenient to mount by one person; the time for installing the elastic modulus instrument and manually drawing lines is reduced, and the machine replaces manual work, so that the system error of personnel test is eliminated; the precision of the test result is improved, the labor cost is reduced, the method is simple and efficient, one-key starting is realized, the application of automation and intellectualization in the test is developed, and the method has great popularization significance in the field of concrete inspection.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an overall schematic view of a full-automatic intelligent concrete elastic modulus tester according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a modulus popping instrument according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a steel string concrete surface strain gauge according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a positioning device of the elastic modulus instrument according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an adjusting device according to an embodiment of the present invention.
In the figure: 10. a pressure testing machine; 20. a tester controller; 1. a cylinder of the press machine; 2. a lower pressing plate; 2-1, a longitudinal moving device; 3. a first steel backing plate; 4. a second steel backing plate; 4-1, a transverse moving device; 5. a third steel backing plate; 6. a concrete elastic module test block; 6-1, mounting a support on the elastic modulus instrument; 6-2, a lower support of the elastic modulus instrument; 6-3, steel chord concrete surface strain gauges; 6-4, a positioning device of the elastic modulus instrument; 6-5, triangular cards; 6-6, a regulating device; 7. an upper pressure plate; 7-1, an annular ball seat; 8. a support bar; 8-1, a sleeve; 8-2, a first positioning pin; 8-3 and a second positioning pin.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
As shown in fig. 1-5, according to the embodiment of the present invention, a full-automatic intelligent concrete elastic modulus tester comprises a compression testing machine 10 and a testing machine controller 20 connected thereto, the compression testing machine 10 is provided with a compression machine oil cylinder 1, a lower press plate 2, a first steel base plate 3, a second steel base plate 4, a third steel base plate 5, a concrete elastic modulus test block 6 and an upper press plate 7 from bottom to top in sequence; a longitudinal moving device 2-1 connected with the side surface of the first steel base plate 3 is fixedly installed on one side of the lower pressing plate 2, a transverse moving device 4-1 connected with the side surface of the third steel base plate 5 is fixedly installed on one side of the second steel base plate 4, and a centering marking line and a test block limiting line are arranged in the middle of the upper side of the third steel base plate 5; the longitudinal moving device 2-1, the transverse moving device 4-1 and the oil cylinder 1 of the press are all connected with the tester controller 20; the upper part and the lower part of the concrete elastic modulus test block 6 are respectively sleeved with an elastic modulus instrument upper support 6-1 and an elastic modulus instrument lower support 6-2, four steel string concrete surface strain gauges 6-3 connected with the tester controller 20 are arranged between the elastic modulus instrument upper support 6-1 and the elastic modulus instrument lower support 6-2, and an elastic modulus instrument positioning device 6-4 fixed on the concrete elastic modulus test block 6 is arranged below the elastic modulus instrument lower support 6-2.
In a specific embodiment of the present invention, the driving mechanism of the longitudinal moving device 2-1 and the lateral moving device 4-1 both use servo motors.
In a specific embodiment of the present invention, a first dovetail groove channel matched with the first dovetail type raised line on the lower side of the first steel backing plate 3 is arranged on the upper side of the lower press plate 2; a second dovetail groove channel matched with the first dovetail convex strip on the upper side of the first steel base plate 3 is arranged on the lower side of the second steel base plate 4, and a second dovetail convex strip vertical to the second dovetail groove channel is arranged on the upper side of the second steel base plate 4; and a third dovetail groove matched with the second dovetail type convex strip is formed in the lower side of the third steel base plate 5.
In a specific embodiment of the present invention, a longitudinal nut sleeve connected to the longitudinal moving device 2-1 is installed on a side surface of the first steel backing plate 3, and the longitudinal moving device 2-1 is connected to the longitudinal nut sleeve through a telescopic screw rod; and a transverse nut sleeve connected with the transverse moving device 4-1 is installed on the side surface of the third steel base plate 5, and the transverse moving device 4-1 is connected with the transverse nut sleeve through a telescopic screw rod.
In a specific embodiment of the present invention, the upper pressing plate 7 is fixedly provided with an annular ball seat 7-1 at one side of the concrete elastic module test block 6.
In an embodiment of the present invention, the bottom of the steel string concrete surface strain gauge 6-3 is provided with a hemispherical positioning device, the upper end and the lower end of the steel string concrete surface strain gauge 6-3 are provided with triangular clamping pieces 6-5 in surface contact with the concrete bullet module 6, the steel string concrete surface strain gauge 6-3 is connected with a 12V dc power supply, and a wireless transmission deformation data device is arranged in the steel string concrete surface strain gauge 6-3.
In a specific embodiment of the utility model, play mould appearance positioner 6-4 and be the right angle frame of L type, play mould appearance positioner 6-4's both ends and be connected with bracing piece 8 through adjusting device 6-6, the bracing piece 8 top cover is equipped with sleeve 8-1, the sleeve 8-1 outside is equipped with and passes sleeve 8-1 with the first locating pin 8-2 of bracing piece 8, first locating pin 8-2 one side is connected with the second locating pin 8-3 of bracing piece 8 side through the patchcord, the top of sleeve 8-1 is equipped with the recess that matches with hemispherical positioner the bottom distance of sleeve 8-1 with string concrete surface strain gauge 6-3 is 5mm-10 mm.
In a specific embodiment of the present invention, the upper support 6-1 and the lower support 6-2 are rectangular frames formed by four steel bars movably connected in sequence, and the closed portion of the rectangular frame is fastened by screws and nuts.
In a specific embodiment of the present invention, the steel plates in the upper support 6-1 and the lower support 6-2 of the elastic modulus instrument are sequentially movably connected by hinges.
For the convenience of understanding the above technical solutions of the present invention, the above technical solutions of the present invention are explained in detail through specific use modes below.
According to a full-automatic intelligent concrete elasticity modulus tester, including compression testing machine 10, testing machine controller 20, steel backing plate drive arrangement, play mould appearance and play mould appearance positioner 6-4.
The press testing machine 10 comprises three layers of steel base plates, an annular ball seat 7-1, a testing machine controller 20, a servo oil pump, a press machine oil cylinder and the like, wherein the testing machine controller 20 is connected with a driving device on the three layers of steel base plates and wirelessly receives a steel string concrete surface strain gauge 6-3, and the pressure testing machine has primary precision;
the tester controller 20 includes computer commands, a system motherboard, data connection and wireless receiving functions,
computer commands including automatic loading, automatic dead load, automatic acquisition, automatic centering, test after centering, automatic data calculation, data storage and automatic reset;
automatic loading, including loading, unloading and homing, wherein the automatic loading is carried out according to the set speed of the press machine and the initial load to the control load, and the control load returns to the initial load for automatic unloading and automatic homing;
automatic dead load, including setting dead load time, initial load and automatic dead load of control load;
automatic collection, including constant load deformation, constant load time, initial load and control load;
the method comprises the steps of automatic centering, wherein the automatic centering comprises four steel string concrete surface strain gauges 6-3, deformation data, loading and movement processing of a constant-load steel base plate driving device, and when the loading is carried out in the initial loading process, and the deformation difference values of two opposite surfaces exceed 20% of the average value, a movement command of the steel base plate driving device is given;
when the deformation data from the initial load to the control load meet the requirements, the control load is automatically unloaded to the initial load and is automatically loaded from the initial load to the control load, and the deformation data are automatically collected in a constant load mode for 60s and 30s respectively;
through automatic calculation, when two opposite deformation difference values from the initial load to the control load reach within 20% of the average value, and the maximum value and the minimum value of the four deformation values do not exceed 20% of the maximum value, centering is finished, otherwise, the position of the steel backing plate is automatically adjusted according to the deformation values until the deformation meets the requirements. The position of the steel backing plate automatically gives longitudinal or transverse movement according to the deformation value;
testing after centering, wherein the testing comprises at least 2 times of prepressing after centering is finished, the load constant load is initially and controlled during prepressing for 60s, the load is loaded again after the last prepressing is finished, the initial load and the controlled load are respectively constant load for 60s and 30s, and the test is finished;
data calculation, including centering and data calculation after centering, and automatic discrimination;
data storage, including loading time storage, loading load data storage, deformation data storage, calculation value storage, test time storage, input information data storage, printing, consulting and network uploading;
the wireless receiving function comprises a receiving device and a data acquisition device.
The elastic modulus instrument structure comprises four 1-micron steel string concrete surface strain instruments, is superior to primary precision, and is a fastening device for wirelessly transmitting deformation data and steel string surface strain instruments, wherein the accuracy of the elastic modulus instrument structure is 0.001 mm.
The steel string concrete surface strain gauge comprises a steel string concrete surface strain gauge 6-3, a hemispherical positioning device is arranged at the bottom of the steel string concrete surface strain gauge, and triangular clamping pieces 6-4 are arranged on the inner sides of the upper end and the lower end and in contact with the concrete surface.
The device is characterized in that two movable square steel hoop devices are arranged, the start end and the tail end are fastened all around by adopting screw rods and nuts, three steel plates are connected by adopting high-precision hinges, the fit clearance is within 0.1mm, the steel plate at the fastening position is a free section, and the strain gauge is arranged at a position which is 75mm away from the central line of the hinge of the adjacent surface or has other standard sizes and is fastened by only one person.
The elastic die instrument positioning device can replace manual line drawing and comprises a right-angle horizontal gauge length, a supporting rod 8, a sleeve 8-1, a first positioning pin 8-2, a second positioning pin 8-3 and a connecting line.
The support bar 8 has a horizontal slight adjusting function, and the distance between the right angle and the central line of the support bar 8 is 75mm or other standard sizes.
When the tester is used specifically, according to the full-automatic intelligent tester for the elastic modulus of the concrete, the steel base plates are installed, so that the first steel base plate can move in a longitudinal telescopic manner, and the third steel base plate can move in a transverse telescopic manner;
a servo moving device is installed and fixed at one end of the middle position of the lower pressing plate, and then the servo moving device is connected with a first steel base plate and a testing machine controller through a lead; the transverse moving device is fixedly arranged at one end of the middle position of the second steel backing plate, then is connected with the third layer of steel backing plate, and is connected with the tester controller through a lead;
according to the size error of the standard test piece, the sizes of a fastening steel base plate of the elastic modulus instrument, the placement position of a steel chord concrete surface strain gauge, a right-angle centering positioning device and the like are adjusted, the measurement is carried out after the adjustment and the fastening, and then the installation is carried out, so that all the positions are within 0.5mm of the standard size.
The concrete elastic module test block is in place, a concrete area corresponding to the steel string concrete surface strain gauge is erased, then the concrete elastic module test block is placed on a test block limiting line of a third steel plate, and the center line of the annular ball seat and the center line of the third steel plate are manually placed in a centering mode;
the elastic modulus instrument positioning device is put in place, the elastic modulus instrument positioning device is oppositely placed along the right angle of the concrete elastic modulus test block, and a positioning pin is installed;
the elastic modulus instrument is in place, the elastic modulus instrument is placed on the outer side of the concrete elastic modulus test block, the bottom hemispheres of the four steel string concrete surface strain gauges are embedded into concave circles of the elastic modulus instrument positioning devices, after no abnormity occurs, two ends of the steel backing plate are fastened, and a strain gauge control switch is turned on as long as the upper steel plate and the lower steel plate do not shake;
checking whether the sizes of all parts meet the requirements by using a short steel plate ruler, pulling out the sleeve positioning pin, and entering a next non-operation procedure after no error exists; starting a tester controller, setting loading speed, initial load, control load, constant load time, acquisition time, test date, position and grade, checking and receiving signal data of the steel string concrete surface strain gauge, starting an oil pump after the signal data is normal, slowly lifting an oil cylinder for 15mm to 10mm, stopping, automatically resetting a force value, loading to 0.5MPa for unloading, and recording zero point data of the steel string concrete surface strain gauge after the unloading;
in the loading process, centering, loading an initial load to 0.5MPa, keeping a constant load for 60s, collecting deformation data of the steel string concrete surface strain gauge in 30s, automatically loading to a control load in the next step, judging whether the difference between the four single deformation data and the average value in the process from the initial load to the control load is within 20% of the average value, calculating by a control system, giving a movement command by the control system, unloading to the original position of the press machine firstly after giving the movement command, and finding by utilizing the transverse movement or the longitudinal movement of a driving device. Analyzing the opposite deformation difference, selecting the steel chord concrete surface strain gauge with the maximum value as the moving direction, and moving outwards or inwards when the deformation value is high, wherein the outward movement or the inward movement depends on the directions of the left end and the right end or the front end and the rear end driven by a motor;
in formal centering, loading and unloading from the last cyclic control load to an initial load, automatically loading to the control load, acquiring data of the initial load and the control load within 60s and 30s of dead load respectively, analyzing deformation data of four steel string concrete surface strain gauges, wherein the deformation data is obtained by subtracting a deformation value of the initial load from a deformation value of the control load, analyzing the deformation data, longitudinally or transversely moving when a difference value of two opposite steel string concrete surface strain gauges exceeds 20% of an average value of the two opposite steel string concrete surface strain gauges, and simultaneously moving when the difference values of the four opposite steel string concrete surface strain gauges exceed 20% of the average value, wherein the moving range is half of the deformation difference value. When one of the steel string concrete surface strain gauges exceeds the average value by 20%, setting commands according to the average value of 10%, 20% and 30%, moving the moving range according to half of the exceeding deformation data, and automatically adjusting and repairing the moving commands according to the historical statistical data; when two conditions are met, the data minimum value or the maximum value ratio difference value of the four steel chord concrete surface strain gauges is not more than 20% of the average value, and the difference value of each steel chord concrete surface strain gauge and the average value is not more than 20% of the average value, pre-pressing circulation is carried out, and pre-pressing constant load is carried out for 60 s;
the pre-pressing is carried out for at least two cycles. During pre-pressing, the initial load and the control load are constant for 60 s. After the pre-pressing is finished, acquiring data for 60s and 30s under the initial load and the controlled load, and calculating the single-value elastic modulus; continuously performing 3 concrete elastic model test block shape change values and axis compressive strength, and automatically calculating and judging; and automatically storing, inquiring and connecting to a network for uploading data.
In summary, by means of the technical scheme of the utility model, the complicated processes of the concrete elastic modulus centering test and the test after centering are solved; the machine is used for replacing the manual work, so that the system error of the personnel test is eliminated; the precision of the test result is improved, and the labor intensity is reduced; the one-key starting starts the application of automation and intellectualization in the test, and has great popularization significance in the field of concrete inspection.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A full-automatic intelligent concrete elastic modulus tester comprises a compression testing machine (10) and a testing machine controller (20) connected with the compression testing machine, and is characterized in that the compression testing machine (10) is sequentially provided with a compression machine oil cylinder (1), a lower pressing plate (2), a first steel base plate (3), a second steel base plate (4), a third steel base plate (5), a concrete elastic modulus testing block (6) and an upper pressing plate (7) from bottom to top; a longitudinal moving device (2-1) connected with the side face of the first steel base plate (3) is fixedly installed on one side of the lower pressing plate (2), a transverse moving device (4-1) connected with the side face of the third steel base plate (5) is fixedly installed on one side of the second steel base plate (4), and a centering marking line and a test block limiting line are arranged in the middle of the upper side of the third steel base plate (5); the longitudinal moving device (2-1), the transverse moving device (4-1) and the oil cylinder (1) of the press machine are all connected with the tester controller (20) in a wireless mode; the upper portion and the lower portion of the concrete elastic modulus test block (6) are respectively sleeved with an elastic modulus instrument upper support (6-1) and an elastic modulus instrument lower support (6-2), four steel chord concrete surface strain gauges (6-3) connected with the testing machine controller (20) are arranged between the elastic modulus instrument upper support (6-1) and the elastic modulus instrument lower support (6-2), and an elastic modulus instrument positioning device (6-4) fixed on the concrete elastic modulus test block (6) is arranged below the elastic modulus instrument lower support (6-2).
2. The fully automatic intelligent concrete elastic modulus tester according to claim 1, characterized in that the driving mechanisms of the longitudinal moving device (2-1) and the transverse moving device (4-1) both adopt servo motors.
3. The fully-automatic intelligent concrete elastic modulus tester according to claim 1, characterized in that a first dovetail groove matched with a first dovetail type convex strip at the lower side of the first steel base plate (3) is arranged at the upper side of the lower pressure plate (2); a second dovetail groove channel matched with the first dovetail convex strip on the upper side of the first steel base plate (3) is arranged on the lower side of the second steel base plate (4), and a second dovetail convex strip perpendicular to the second dovetail groove channel is arranged on the upper side of the second steel base plate (4); and a third dovetail groove channel matched with the second dovetail type convex strip is arranged on the lower side of the third steel base plate (5).
4. The full-automatic intelligent concrete elastic modulus tester according to claim 1, characterized in that a longitudinal nut sleeve connected with the longitudinal moving device (2-1) is installed on the side surface of the first steel base plate (3), and the longitudinal moving device (2-1) is connected with the longitudinal nut sleeve through a telescopic screw rod; and a transverse nut sleeve connected with the transverse moving device (4-1) is installed on the side surface of the third steel base plate (5), and the transverse moving device (4-1) is connected with the transverse nut sleeve through a telescopic screw rod.
5. The fully-automatic intelligent concrete elastic modulus tester according to claim 1, wherein an annular ball seat (7-1) is fixedly arranged on the upper pressure plate (7) at one side of the concrete elastic modulus test block (6).
6. The full-automatic intelligent concrete elastic modulus tester according to claim 1, wherein a hemispherical positioning device is arranged at the bottom of the steel string concrete surface strain gauge (6-3), triangular clamping pieces (6-5) in surface contact with the concrete elastic modulus test block (6) are arranged at the upper end and the lower end of the steel string concrete surface strain gauge (6-3), the steel string concrete surface strain gauge (6-3) is connected with a 12V direct current power supply, and a wireless transmission deformation data device is arranged in the steel string concrete surface strain gauge (6-3).
7. The full-automatic intelligent concrete elastic modulus tester according to claim 1, wherein the elastic modulus tester positioning device (6-4) is an L-shaped right angle frame, two ends of the elastic modulus tester positioning device (6-4) are connected with a support rod (8) through an adjusting device (6-6), a sleeve (8-1) is sleeved on the top of the support rod (8), a first positioning pin (8-2) penetrating through the sleeve (8-1) and the support rod (8) is arranged on the outer side of the sleeve (8-1), one side of the first positioning pin (8-2) is connected with a second positioning pin (8-3) on the side of the support rod (8) through a flexible wire, a groove matched with a hemispherical positioning device is arranged on the top of the sleeve (8-1), and the top of the sleeve (8-1) is connected with a steel chord concrete surface strain gauge (6-3) The bottom distance is 5mm-10 mm.
8. The full-automatic intelligent concrete elastic modulus tester according to claim 1, characterized in that the elastic modulus instrument upper support (6-1) and the elastic modulus instrument lower support (6-2) are rectangular frame bodies formed by sequentially and movably connecting four steel bars, and the closed parts of the rectangular frame bodies are fastened through screws and nuts.
9. The fully-automatic intelligent concrete elastic modulus tester according to claim 1, wherein steel plates in the elastic modulus instrument upper support (6-1) and the elastic modulus instrument lower support (6-2) are sequentially and movably connected through hinges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021822758.0U CN213121432U (en) | 2020-08-27 | 2020-08-27 | Full-automatic intelligent concrete elastic modulus tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021822758.0U CN213121432U (en) | 2020-08-27 | 2020-08-27 | Full-automatic intelligent concrete elastic modulus tester |
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| CN213121432U true CN213121432U (en) | 2021-05-04 |
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| CN202021822758.0U Active CN213121432U (en) | 2020-08-27 | 2020-08-27 | Full-automatic intelligent concrete elastic modulus tester |
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