CN105067454A - Device and method for detecting tensile strength and compressive strength of concrete by in-situ shearing and splitting method - Google Patents
Device and method for detecting tensile strength and compressive strength of concrete by in-situ shearing and splitting method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000010008 shearing Methods 0.000 title abstract description 10
- 238000011065 in-situ storage Methods 0.000 title abstract 5
- 238000007906 compression Methods 0.000 claims abstract description 42
- 230000006835 compression Effects 0.000 claims abstract description 9
- 210000000078 claw Anatomy 0.000 claims description 73
- 238000012360 testing method Methods 0.000 claims description 16
- 238000005520 cutting process Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000009191 jumping Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
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- 238000003860 storage Methods 0.000 description 1
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Abstract
The invention discloses a device and a method for detecting tensile strength and compressive strength of concrete by an in-situ shearing and splitting method; the device for detecting the tensile strength and the compressive strength of concrete by using the in-situ shearing and splitting method comprises a force application device, a shearing and splitting device and a tension and compression sensor, wherein the shearing and splitting device comprises a lifting block, a force guide rod and a jaw seat, a first jaw is arranged on the jaw seat on one side, a second jaw is arranged on the jaw seat on the other side, a first jaw is provided with a first tooth, a second jaw is provided with a second tooth, and a calibration sensor is arranged in a jaw assembly before detection; the shearing and splitting device can realize in-situ shearing or in-situ splitting operation by replacing the first clamping jaw and the second clamping jaw, the calibration sensor can measure the actual pressure of the clamping jaw assembly, and the tension and compression sensor is calibrated according to the calibration sensor to eliminate errors caused by the force guide rod.
Description
Technical field
The present invention relates to concrete strength inspection technical field, particularly relate to a kind of original position and cut the apparatus and method that method of splitting detects concrete tension and compressive strength.
Background technology
Concrete strength inspection technology is indispensable technological means in Engineering Quality Control process, and concrete tensile strength and compressive strength are two important technical indicators in xoncrete structure, be design, construction, the important evidence of checking and accepting, using.The Technical comparing of current detection concrete crushing strength is ripe, test method separating tests room detection technique and onthe technology of site test, and the technology detecting tensile strength only testing laboratory by make with condition standard test block or drill through diameter 100mm core processing after, pressing machine has been come by splitting tensile test, because the equipment of testing laboratory's diametral compression test is heavier, test technology is complicated, splitting tensile test method is affected, the means that can detect in position are not also had at present as the important mechanical characteristics value tensile strength of concrete, more once do not test the projectional technique of two concrete important parameters.Therefore be necessary to research and develop a kind of device that can detect two concrete important parameters, to reduce the damage to structure, raise the efficiency, the labour intensity reduced a staff.
Summary of the invention
First object of the present invention is to provide a kind of original position to cut splits the device that method detects concrete tension and compressive strength, it can detect concrete tension and resistance to compression two intensive parameters, and eliminate internal system error by calibration sensor, not only increase detection efficiency, decrease the labour intensity of staff, improve the precision of measurement simultaneously.
Second object of the present invention is to provide a kind of original position to cut splits the method that method detects concrete tension and compressive strength, it can detect concrete tension and resistance to compression two intensive parameters, and eliminate internal system error by calibration sensor, not only increase detection efficiency, decrease the labour intensity of staff, improve the precision of measurement simultaneously.
For reaching first object, the present invention by the following technical solutions:
Original position cuts the device that method of splitting detects concrete tension and compressive strength, comprise augmentor, cut and split device and control device, augmentor and cut to split between device and be provided with tension-compression sensor, tension-compression sensor is connected with control device, cut and split device and comprise the lift block be connected with tension-compression sensor, the force-guided stem that symmetry is hinged on lift block both sides and the master jaw be hinged with force-guided stem, the bottom of the master jaw of side is provided with the first claw of circular arc, the bottom of the master jaw of opposite side is provided with the second claw of circular arc, first claw and the second claw form cylindric jaw components, the medial surface of the first claw is provided with first and grits one's teeth, the medial surface of the second claw is provided with second and grits one's teeth, calibration sensor is provided with in jaw components before detecting, the both sides of calibration sensor are respectively arranged with to grit one's teeth with first and second to grit one's teeth the groove matched.
Wherein, when original position is sheared, first grits one's teeth is greater than zero with the second relative height of gritting one's teeth, and during original position splitting, first grits one's teeth equals zero with the second relative height of gritting one's teeth.
Wherein, master jaw comprises the connecting link and terminal pad that are connected, top and the force-guided stem of connecting link are hinged, the bottom of terminal pad is provided with Access Division, the lateral surface of Access Division is provided with draw-in groove, the medial surface of the first claw and the second claw is provided with the first boss matched with draw-in groove, and the first claw and the lateral surface of the second claw are provided with the second boss be fixedly connected with terminal pad.
Wherein, master jaw comprises the connecting link and terminal pad that are connected, top and the force-guided stem of connecting link are hinged, the bottom of terminal pad is provided with Access Division, the lateral surface of Access Division is provided with annular boss, the medial surface of the first claw and the second claw is provided with the ring groove matched with annular boss, and the first claw and the lateral surface of the second claw are provided with the 3rd boss be fixedly connected with terminal pad.
Wherein, augmentor comprises drive motor, driving gear and follower gear and lifting rod, drive motor is connected with driving gear by reductor, driving gear and follower gear engaged transmission, the top of lifting rod is fixedly connected with follower gear, and the bottom of lifting rod is fixedly connected with tension-compression sensor.
Wherein, augmentor also comprises housing, and driving gear, follower gear are all positioned at housing, and the outer setting of tension-compression sensor has sensor jacket, and the top of sensor jacket is fixedly connected with housing, and the bottom of lifting rod is stretched out housing and is positioned at sensor jacket.
Wherein, be provided with supporting seat between two master jaws, supporting seat comprises the back up pad hinged with master jaw and is arranged on the supporting disk of back up pad upper end, and the bottom of sensor jacket is fixedly connected with supporting disk.
Wherein, be provided with plastic linear bearing between lifting rod and sensor jacket, the top of plastic linear bearing is provided with inner shield ring, and the below of plastic linear bearing is provided with outer back-up ring.
Wherein, the outer setting of augmentor has the first shell, and cutting the outer setting of splitting device has second housing.
For reaching second object, the present invention by the following technical solutions:
Adopt said apparatus to detect the method for concrete tension and compressive strength, comprise the following steps:
(1), adopt the actual pressure of calibration sensor measurement card claw assembly, tension-compression sensor is demarcated according to calibration sensor;
(2), on test specimen jumping through rings core sample hole, jaw components is inserted in annular core hole;
(3), by control device start augmentor, until core is sheared or splitting, tension-compression sensor records maximal force when core destroys, and feeds back to control device, and original state is got back in augmentor reversion;
(4), maximal force is scaled concrete resistance to compression or tensile strength.
Beneficial effect of the present invention: original position cuts the device that method of splitting detects concrete tension and compressive strength, comprise augmentor, cut and split device and control device, augmentor and cut to split between device and be provided with tension-compression sensor, tension-compression sensor is connected with control device, cut and split device and comprise the lift block be connected with tension-compression sensor, the force-guided stem that symmetry is hinged on lift block both sides and the master jaw be hinged with force-guided stem, the bottom of the master jaw of side is provided with the first claw of circular arc, the bottom of the master jaw of opposite side is provided with the second claw of circular arc, first claw and the second claw form cylindric jaw components, the medial surface of the first claw is provided with first and grits one's teeth, the medial surface of the second claw is provided with second and grits one's teeth, calibration sensor is provided with in jaw components before detecting, the both sides of calibration sensor are respectively arranged with to grit one's teeth with first and second to grit one's teeth the groove matched.Cut and split device by changing the first claw and the second claw, realize original position to shear or original position cleave operation, calibration sensor can the actual pressure of measurement card claw assembly, tension-compression sensor is carried out according to calibration sensor demarcate the error can eliminated because force-guided stem causes, original position of the present invention cuts the apparatus and method that method of splitting detects concrete tension and compressive strength, concrete tension and resistance to compression two intensive parameters can be detected, and eliminate internal system error by calibration sensor, not only increase detection efficiency, decrease the labour intensity of staff, improve the precision of measurement simultaneously.
Accompanying drawing explanation
Fig. 1 is the front view that original position of the present invention cuts that method of splitting detects the device of concrete tension and compressive strength.
Fig. 2 is the cut-open view of AA section in Fig. 1.
Fig. 3 is the operating diagram of cutting head of the present invention.
Fig. 4 is the operating diagram of splitting head of the present invention.
Fig. 5 is the front view of the splitting device of one embodiment of the present of invention.
Fig. 6 is the upward view of the splitting device of one embodiment of the present of invention.
Fig. 7 is the cut-open view of AA section in Fig. 5.
Fig. 8 is the perspective view of the splitting device of one embodiment of the present of invention.
Fig. 9 is the perspective exploded view of the splitting device of one embodiment of the present of invention.
Figure 10 is the structural representation of the splitting device of an alternative embodiment of the invention.
Figure 11 is the perspective view of the splitting device of an alternative embodiment of the invention.
Figure 12 is the connection diagram of augmentor of the present invention and splitting device.
Figure 13 is the cut-open view of AA section in Figure 12.
Figure 14 is the perspective view of augmentor of the present invention and splitting device.
Reference numeral is as follows:
1-augmentor; 11-drive motor; 12-driving gear; 13-follower gear; 14-lifting rod; 15-reductor; 16-housing; 2-cuts and splits device; 21-lift block; 22-force-guided stem; 23-master jaw; 231-connecting link; 232-terminal pad; 233-Access Division; 2331-draw-in groove; 2332-annular boss; 24-first claw; 241-first grits one's teeth; 242-first boss; 243-ring groove; 25-second claw; 251-second grits one's teeth; 252-second boss; 253-the 3rd boss; 26-supporting seat; 261-back up pad; 262-supporting disk; 3-tension-compression sensor; 4-calibration sensor; 41-groove; 5-sensor jacket; 6-plastic linear bearing; 7-inner shield ring; The outer back-up ring of 8-; 9-first shell; 10-second housing; 20-test specimen; 201-annular core hole
Embodiment
Technical scheme of the present invention is further illustrated by specific embodiment below in conjunction with Fig. 1 to Figure 14.
Original position cuts the device that method of splitting detects concrete tension and compressive strength, comprises augmentor 1, cuts and split device 2 and control device, augmentor 1 and cut to split between device 2 and be provided with tension-compression sensor 3, as depicted in figs. 1 and 2; Tension-compression sensor 3 is connected with control device, cuts the master jaw 23 split device 2 and comprise the lift block 21 be connected with tension-compression sensor 3, force-guided stem 22 that symmetry is hinged on lift block 21 both sides and be hinged with force-guided stem 22, as shown in Figures 5 to 9; The bottom of the master jaw 23 of side is provided with the first claw 24 of circular arc, the bottom of the master jaw 23 of opposite side is provided with the second claw 25 of circular arc, first claw 24 and the second claw 25 form cylindric jaw components, the medial surface of the first claw 24 is provided with first and grits one's teeth 241, the medial surface of the second claw 25 is provided with second and grits one's teeth 251, as shown in Figure 3 and Figure 4; Be provided with calibration sensor 4 in jaw components before detecting, the both sides of calibration sensor 4 are respectively arranged with to grit one's teeth with first and 241 and second grit one's teeth 251 grooves matched 41, as shown in Fig. 2 and Figure 14.Cut and split device 2 by changing the first claw 24 and the second claw 25, realize original position and shear or original position cleave operation; Namely calibration sensor 4 is cut and is split sensor, can the actual pressure of measurement card claw assembly, is carried out by tension-compression sensor 3 demarcating the error can eliminated because force-guided stem 22 causes according to calibration sensor 4; Tension-compression sensor 3, directly with augmentor 1 with cut and split device 2 and be connected, take part in transmission load, makes the data system error of collection little, can not affect the precision of data acquisition because of the wear and aging of drive disk assembly; Lift block 21, force-guided stem 22 and master jaw 23 form linkage assembly, under the vertical of tension-compression sensor 3, the bottom of master jaw 23 can to-and-fro movement in the horizontal direction, to make the first claw 24, second claw 25 relative movement be in the horizontal direction connected with master jaw 23, thus realize original position shearing or original position cleave operation.
In the present embodiment, original position shear time, first grit one's teeth 241 and second grit one's teeth 251 relative height be greater than zero, during original position splitting, first grit one's teeth 241 and second grit one's teeth 251 relative height equal zero.Preferably, when first grit one's teeth 241 and second grit one's teeth 251 relative height equal zero time, the first claw 24 and the second claw 25 partner splitting head, as shown in Figure 4; When first grit one's teeth 241 and second grit one's teeth 251 relative height be greater than zero time, the first claw 24 and the second claw 25 partner cutting head, as shown in Figure 3.By changing the first claw 24 and/or the second claw 25 forms cutting head or splitting head, realizing original position and shearing or original position cleave operation, calculating concrete tension or compressive strength according to testing the data obtained.
In the present embodiment, as shown in Figure 9, master jaw 23 comprises the connecting link 231 and terminal pad 232 that are connected, top and the force-guided stem 22 of connecting link 231 are hinged, the bottom of terminal pad 232 is provided with Access Division 233, the lateral surface of Access Division 233 is provided with draw-in groove 2331, and the medial surface of the first claw 24 and the second claw 25 is provided with the first boss 242, first claw 24 matched with draw-in groove 2331 and is provided with the lateral surface of the second claw 25 the second boss 252 be fixedly connected with terminal pad 232.Preferably, the first claw 24 and the second claw 25 and terminal pad 232 coordinate phase clamping first by draw-in groove 2331, first boss 242, then are fixedly connected with master jaw 23 by screw thread, are convenient for changing.
In other embodiments, as shown in Figure 10 and Figure 11, master jaw 23 comprises the connecting link 231 and terminal pad 232 that are connected, top and the force-guided stem 22 of connecting link 231 are hinged, the bottom of terminal pad 232 is provided with Access Division 233, the lateral surface of Access Division 233 is provided with annular boss 2332, the medial surface of the first claw 24 and the second claw 25 is provided with ring groove 243, first claw 24 matched with annular boss 2332 and is provided with the lateral surface of the second claw 25 the 3rd boss 253 be fixedly connected with terminal pad 232.Preferably, the first claw 24 and the second claw 25 and terminal pad 232 first by annular boss 2332, ring groove 243 coordinate phase clamping, then to be fixedly connected with master jaw 23 by screw thread, to be convenient for changing.
In the present embodiment, as shown in Figure 12 to Figure 14, augmentor 1 comprises drive motor 11, driving gear 12, follower gear 13 and lifting rod 14, drive motor 11 is connected with driving gear 12 by reductor 15, driving gear 12 and follower gear 13 engaged transmission, the top of lifting rod 14 is fixedly connected with follower gear 13, and the bottom of lifting rod 14 is fixedly connected with tension-compression sensor 3.Drive motor 11 drives driving gear 12 to rotate by reductor 15, driving gear 12 and follower gear 13 engaged transmission, follower gear 13 is fixedly connected with by screw thread with lifting rod 14, namely circular motion is changed into rectilinear motion by gear drive, lifting rod 14 vertically can move up and down under the drive of follower gear 13, make tension-compression sensor 3 can be vertically reciprocating, lift block 21 moves under the vertical of tension-compression sensor 3, and by linkage assembly, acting force is upwards converted into radial clamping force, make the first claw 24 be connected with master jaw 23, second claw 25 in the horizontal direction relative movement clamps core, thus realize original position shearing or original position cleave operation.
Preferably, drive motor 11 adopts micromachine, lithium battery power supply, make structure lighter, alleviate the burden of operator, a people can complete all operations, lithium battery once charges with completing and over one hundredly time pulls operation, can complete the continued operation under field operation and inclement condition environment; Driving gear 12 and follower gear 13 are Helical gear Transmission, and make transmission more steadily reliable, loading speed is even, improves measuring accuracy.Further preferably, control device is positioned at above augmentor 1, and control device adopts Microprocessor S3C44B0X, works out different subroutines, utilizes control panel button and screen to select different modes of operation, to reach different objects according to difference in functionality.The change of the drive current when data that microprocessor is gathered by tension-compression sensor 3 and return, the rotation direction controlling drive motor 11 reaches the object of operation of drive motor 11, and built-in SD storage card, can store a large amount of test datas.The display panel of control device adopts oled panel, effectively can prevent the interference of sunlight, have light, energy-conservation effect.
In the present embodiment; as shown in Figure 12 to Figure 14; augmentor 1 also comprises housing 16; driving gear 12 and follower gear 13 are all positioned at housing 16; the outer setting of tension-compression sensor 3 has sensor jacket 5; the top of sensor jacket 5 is fixedly connected with housing 16, and the bottom of lifting rod 14 is stretched out housing 16 and is positioned at sensor jacket 5, and sensor jacket 5 pairs of tension-compression sensors 3 and lifting rod 14 play a protective role.As shown in Figure 7 to 9, be provided with supporting seat 26 between two master jaws 23, supporting seat 26 comprises the back up pad 261 hinged with master jaw 23 and is arranged on the supporting disk 262 of back up pad 261 upper end, and the bottom of sensor jacket 5 is fixedly connected with supporting disk 262.Supporting disk 262 is fixing on housing 16 by sensor jacket 5, and namely supporting disk 262 is fixed with the relative position of housing 16, and master jaw 23 is hinged with back up pad 261, and namely master jaw 23 can rotate by relative support plate 261.
In the present embodiment, as shown in Figure 12 to Figure 14, be provided with plastic linear bearing 6 between lifting rod 14 and sensor jacket 5, the top of plastic linear bearing 6 is provided with inner shield ring 7, and the below of plastic linear bearing 6 is provided with outer back-up ring 8.Plastic linear bearing 6 exempts from lubrication, can reduce friction when lifting rod 14 moves up and down and between sensor jacket 5, and inner shield ring 7 and outer back-up ring 8 pairs of plastic linear bearings 6 play and support and spacing effect.
In the present embodiment, as shown in Figure 2, the outer setting of augmentor 1 has the first shell 9, and cutting the outer setting of splitting device 2 has second housing 10.First shell 9 and second housing 10 play protection augmentor 1 and cut the effect of splitting device 2, and preferably, the first shell 9 and second housing 10 are plastic casing.
Adopt said apparatus to detect the method for concrete tension and compressive strength, comprise the following steps:
(1), adopt the actual pressure of calibration sensor 4 measurement card claw assembly, tension-compression sensor 3 is demarcated according to calibration sensor 4;
(2), on test specimen 20 jumping through rings core sample hole 201, jaw components is inserted in annular core hole 201;
(3), by control device start augmentor 1, until core is sheared or splitting, tension-compression sensor 3 records maximal force when core destroys, and feeds back to control device, and original state is got back in augmentor 1 reversion;
(4), maximal force is scaled concrete resistance to compression or tensile strength.
In the present embodiment, control device comprises display panel, can be detected the force value change of core in real time, and can read maximal force when core destroys by display panel.
It is drill small diameter core sample test specimen in position that original position cuts the method for splitting, the diameter of core can be Φ 25mm, Φ 30mm, Φ 38mm, Φ 44mm etc., employing dismounting flexibly, the cutting head of replacing or cutting of splitting head can split device 2, degree of depth 15mm, 20mm or 25mm place are cut off or are split disconnected in position, in case of concrete surface suffers freeze thawing, baked wheaten cake, chemical damage, length can be not less than 80mm core to take out, it is clamped with Special clamping device, nibbling shear or split disconnected, goes conversion concrete tensile strength and compressive strength according to the force value of cutting, splitting.
Original position of the present invention cuts the apparatus and method that method of splitting detects concrete tension and compressive strength, can detect concrete tension and resistance to compression two intensive parameters, and eliminate internal system error by calibration sensor 4, not by the impact of surface of test piece; Plane, curved surface, convex surface, concave surface etc. can be tested, utilize core radial location, do not need the surface of test specimen to provide counter-force, not only increase detection efficiency, decrease the labour intensity of staff, improve the precision of measurement simultaneously.As baked wheaten cake, freeze thawing, chemical erosion, namely there is change in concrete surface, can be got out, and is clamped in and unit clamp carries out segmentation cuts, split operation, thus can understand tension and the compressive strength of impaired thickness, damaged location and non-damaged location.
Above content is only preferred embodiment of the present invention, and for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, this description should not be construed as limitation of the present invention.
Claims (10)
1. original position cuts the device that method of splitting detects concrete tension and compressive strength, comprise augmentor (1), cut and split device (2) and control device, it is characterized in that, described augmentor (1) and described cut to split between device (2) be provided with tension-compression sensor (3), described tension-compression sensor (3) is connected with described control device, described cutting is split device (2) and is comprised the lift block (21) be connected with described tension-compression sensor (3), the force-guided stem (22) that symmetry is hinged on described lift block (21) both sides and the master jaw (23) be hinged with described force-guided stem (22), the bottom of the described master jaw (23) of side is provided with first claw (24) of circular arc, the bottom of the described master jaw (23) of opposite side is provided with second claw (25) of circular arc, described first claw (24) and described second claw (25) form cylindric jaw components, the medial surface of described first claw (24) is provided with first and grits one's teeth (241), the medial surface of described second claw (25) is provided with second and grits one's teeth (251), calibration sensor (4) is provided with in described jaw components before detecting, the both sides of described calibration sensor (4) are respectively arranged with to grit one's teeth (241) with described first and described second to grit one's teeth the groove (41) that (251) match.
2. device according to claim 1, it is characterized in that, when original position is sheared, described first grit one's teeth (241) and described second relative height of gritting one's teeth (251) is greater than zero, during original position splitting, the described first grit one's teeth (241) and described second relative height of gritting one's teeth (251) equals zero.
3. device according to claim 1, it is characterized in that, described master jaw (23) comprises the connecting link (231) and terminal pad (232) that are connected, top and the described force-guided stem (22) of described connecting link (231) are hinged, the bottom of described terminal pad (232) is provided with Access Division (233), the lateral surface of described Access Division (233) is provided with draw-in groove (2331), the medial surface of described first claw (24) and described second claw (25) is provided with the first boss (242) matched with described draw-in groove (2331), described first claw (24) is provided with the lateral surface of described second claw (25) the second boss (252) be fixedly connected with described terminal pad (232).
4. device according to claim 1, it is characterized in that, described master jaw (23) comprises the connecting link (231) and terminal pad (232) that are connected, top and the described force-guided stem (22) of described connecting link (231) are hinged, the bottom of described terminal pad (232) is provided with Access Division (233), the lateral surface of described Access Division (233) is provided with annular boss (2332), the medial surface of described first claw (24) and described second claw (25) is provided with the ring groove (243) matched with described annular boss (2332), described first claw (24) and the lateral surface of described second claw (25) are provided with the 3rd boss (252) be fixedly connected with described terminal pad (232).
5. device according to claim 1, it is characterized in that, described augmentor (1) comprises drive motor (11), driving gear (12), follower gear (13) and lifting rod (14), described drive motor (11) is connected with described driving gear (12) by reductor (15), described driving gear (12) and described follower gear (13) engaged transmission, the top of described lifting rod (14) is fixedly connected with described follower gear (13), the bottom of described lifting rod (14) is fixedly connected with described tension-compression sensor (3).
6. device according to claim 5, it is characterized in that, described augmentor (1) also comprises housing (16), described driving gear (12) and described follower gear (13) are all positioned at described housing (16), the outer setting of described tension-compression sensor (3) has sensor jacket (5), the top of described sensor jacket (5) is fixedly connected with described housing (16), and the bottom of described lifting rod (14) is stretched out described housing (16) and is positioned at described sensor jacket (5).
7. device according to claim 6, it is characterized in that, supporting seat (26) is provided with between two described master jaws (23), described supporting seat (26) comprises the back up pad (261) hinged with described master jaw (23) and is arranged on the supporting disk (262) of described back up pad (261) upper end, and the bottom of described sensor jacket (5) is fixedly connected with described supporting disk (262).
8. device according to claim 6, it is characterized in that, plastic linear bearing (6) is provided with between described lifting rod (14) and described sensor jacket (5), the top of described plastic linear bearing (6) is provided with inner shield ring (7), and the below of described plastic linear bearing (6) is provided with outer back-up ring (8).
9. device according to claim 1, is characterized in that, the outer setting of described augmentor (1) has the first shell (9), described in cut the outer setting of splitting device (2) and have second housing (10).
10. adopt the device as described in any one of claim 1-9 to detect the method for concrete tension and compressive strength, it is characterized in that, comprise the following steps:
(1), adopt the actual pressure of calibration sensor (4) measurement card claw assembly, tension-compression sensor (3) is demarcated according to calibration sensor (4);
(2), in the upper jumping through rings core sample hole (201) of test specimen (20), jaw components is inserted in annular core hole (201);
(3), augmentor (1) is started by control device, until core is sheared or splitting, tension-compression sensor (3) records maximal force when core destroys, and feeds back to control device, and original state is got back in augmentor (1) reversion;
(4), described maximal force is scaled concrete resistance to compression or tensile strength.
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| CN201510564665.XA CN105067454B (en) | 2015-09-07 | 2015-09-07 | Device and method for detecting tensile strength and compressive strength of concrete by in-situ shearing and splitting method |
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| CN201510564665.XA CN105067454B (en) | 2015-09-07 | 2015-09-07 | Device and method for detecting tensile strength and compressive strength of concrete by in-situ shearing and splitting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296888A (en) * | 2019-06-21 | 2019-10-01 | 三峡大学 | A kind of Tensile Strength of Rock in-situ testing device and method |
| WO2024020663A1 (en) * | 2022-07-29 | 2024-02-01 | Ribeiro Luiz Claudio Elece | Test specimen, test piston, test base, test assembly and test specimen manufacturing method |
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| CN1632510A (en) * | 2004-11-26 | 2005-06-29 | 成都理工大学 | Direct shear test machine for rock |
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| CN104198283A (en) * | 2014-09-02 | 2014-12-10 | 建研科技股份有限公司 | Pulling-out instrument control method for automatically detecting concrete strength |
| CN204924816U (en) * | 2015-09-07 | 2015-12-30 | 建研科技股份有限公司 | Device that method of splitting detected concrete tensile and compressive strength is cut to normal position |
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| CN1632510A (en) * | 2004-11-26 | 2005-06-29 | 成都理工大学 | Direct shear test machine for rock |
| CN103018113A (en) * | 2012-07-11 | 2013-04-03 | 深圳中建院建筑科技有限公司 | Device for detecting concrete compressive strength based on force-guiding lever-type in-situ single shear method |
| CN203606212U (en) * | 2013-11-29 | 2014-05-21 | 中国葛洲坝集团国际工程有限公司 | Clamp device for splitting test of concrete cube test piece |
| CN203658173U (en) * | 2013-12-12 | 2014-06-18 | 中国建筑股份有限公司 | Concrete splitting strength test device in ultra low temperature environment |
| CN104165804A (en) * | 2014-09-02 | 2014-11-26 | 建研科技股份有限公司 | Concrete compressive strength detector |
| CN104198283A (en) * | 2014-09-02 | 2014-12-10 | 建研科技股份有限公司 | Pulling-out instrument control method for automatically detecting concrete strength |
| CN204924816U (en) * | 2015-09-07 | 2015-12-30 | 建研科技股份有限公司 | Device that method of splitting detected concrete tensile and compressive strength is cut to normal position |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110296888A (en) * | 2019-06-21 | 2019-10-01 | 三峡大学 | A kind of Tensile Strength of Rock in-situ testing device and method |
| CN110296888B (en) * | 2019-06-21 | 2021-11-02 | 三峡大学 | Rock tensile strength in-situ testing device and method |
| WO2024020663A1 (en) * | 2022-07-29 | 2024-02-01 | Ribeiro Luiz Claudio Elece | Test specimen, test piston, test base, test assembly and test specimen manufacturing method |
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|---|---|
| CN105067454B (en) | 2018-10-26 |
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