CN115308041A - Real-time rock direct tensile strength testing system in high-temperature environment and experimental method thereof - Google Patents
Real-time rock direct tensile strength testing system in high-temperature environment and experimental method thereof Download PDFInfo
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- CN115308041A CN115308041A CN202210854539.8A CN202210854539A CN115308041A CN 115308041 A CN115308041 A CN 115308041A CN 202210854539 A CN202210854539 A CN 202210854539A CN 115308041 A CN115308041 A CN 115308041A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0037—Generation of the force using mechanical means involving a rotating movement, e.g. gearing, cam, eccentric, or centrifuge effects
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a system and an experimental method for testing the direct tensile strength of rocks in a real-time high-temperature environment, wherein the testing system comprises a base, a heating furnace is fixedly arranged at the top of the base, and an electric heating wire is arranged on the inner side wall of the heating furnace; an installation plate is arranged in the heating furnace in a vertically sliding mode, two sample chucks are symmetrically arranged on the bottom surface of the installation plate and the top surface of the base, the two sample chucks are located in the heating furnace, and a sample is installed between the two sample chucks; the heating furnace is characterized in that a power assembly used for driving the mounting plate to move up and down is installed in the base, and the power assembly penetrates through the top surface of the base and then is located in the heating furnace. The invention can scientifically realize the direct tensile strength test of the rock in the real-time high-temperature environment, ensure the effectiveness of the direct tensile test process and the reliability of the preset temperature field, and reduce the danger of the operation of personnel in the experimental process.
Description
Technical Field
The invention relates to the technical field of rock material mechanics experiment testing instruments, in particular to a system and an experiment method for testing direct tensile strength of rock in a real-time high-temperature environment.
Background
Under the action of high-temperature environment, the interior of the rock can generate complex physical and chemical changes, so that the mechanical strength of the rock subjected to high-temperature action is completely different from that of the rock subjected to normal temperature. Because the tensile bearing capacity is a weak part in the mechanical index of rock materials, the influence of a high-temperature environmental field on the tensile strength behavior of the rock is considered to be an important factor which cannot be ignored when the mechanical problem of the rock is researched. However, due to the difficulty of real-time high-temperature environment heating and the limitation of a direct tensile test testing technology, the testing of the tensile strength characteristic of the rock under the coupling action of high temperature and direct tensile load is still very incomplete, and particularly, the introduction of a real-time high-temperature heating condition greatly increases the testing difficulty, so that the related testing technology needs to be studied in a deep and systematic manner. The main difficulty of the direct tensile strength testing technology of the rock in the high-temperature environment is represented by: (1) The problem of combined connection between a real-time high-temperature heating device and a direct stretching mechanical device is solved; (2) The maintenance of a high-temperature environment field in the direct tensile test process and the problem of heat dissipation in the sample heating and loading processes are prevented; (3) The automatic centering problem of the sample and the tensile load, in particular to the problem of how to ensure the automatic centering in a real-time high-temperature environment; (4) the connection problem between the sample and the automatic centering device; (5) The size of the loaded sample can be adjusted under the combined action of the high-temperature environment and the tensile load.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a system and an experimental method for testing the direct tensile strength of the rock in the real-time high-temperature environment, which can scientifically realize the direct tensile strength test of the rock in the real-time high-temperature environment, ensure the effectiveness of the direct tensile test process and the reliability of the preset temperature field, and reduce the risk of personnel operation in the experimental process.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a direct tensile strength test system of rock under real-time high temperature environment, includes the base, its characterized in that: the top of the base is fixedly provided with a heating furnace, and the inner side wall of the heating furnace is provided with an electric heating wire; an installation plate is arranged in the heating furnace in a vertically sliding mode, two sample chucks are symmetrically arranged on the bottom surface of the installation plate and the top surface of the base, the two sample chucks are located in the heating furnace, and a sample is installed between the two sample chucks; the base is internally provided with a power assembly for driving the mounting plate to move up and down, and the power assembly penetrates through the top surface of the base and then the top of the power assembly is positioned in the heating furnace.
Further, the sample chuck includes first (holding) chuck, second (holding) chuck, centre gripping ring plate and a plurality of about pole, the second (holding) chuck cover is established in the middle of the first (holding) chuck, just the second (holding) chuck with first (holding) chuck rotates to be connected, centre gripping ring plate also overlaps and is established on the first (holding) chuck, centre gripping ring plate with first (holding) chuck rotates to be connected, just centre gripping ring plate with be equipped with between the first (holding) chuck be used for right centre gripping ring plate with first (holding) chuck carries out the fixed screw that fixes, centre gripping ring plate with be equipped with drive assembly between the second (holding) chuck, it is a plurality of about pole with first (holding) chuck with second (holding) chuck swing joint.
Further, first (holding) chuck includes first disc and second disc, first disc with connect through the connecting axle between the center of second disc, first disc with a plurality of arc through-holes have been seted up to correspondence on the second disc, the number of arc through-hole with the number of restraint bar is the same, every restraint bar runs through corresponding arc through-hole, the one end of restraint bar has set firmly the limiting plate, the size of limiting plate is greater than the size of arc through-hole.
Furthermore, the second (holding) chuck be discoid structure, just the central point department of putting of second (holding) chuck seted up with connecting axle assorted installation through-hole, the second (holding) chuck passes through the installation through-hole cover is established on the connecting axle, just the second (holding) chuck is located between first disc and the second disc, set up on the second (holding) chuck a plurality ofly with the radial hole that the arc through-hole is corresponding, a plurality of the radial hole all with the installation through-hole intercommunication.
Furthermore, the clamping ring plate comprises a first ring and a second ring, the first ring is fixedly connected with the second ring through a fixing block, a first sliding groove matched with the first ring is formed in the periphery of the first disc, a second sliding groove matched with the second ring is formed in the periphery of the second disc, and the fixing block corresponds to the second chuck plate in position.
Furthermore, the transmission assembly comprises a transmission hole formed in the fixed block, a transmission screw is connected to the transmission hole in a threaded manner, the transmission screw is of a hollow structure, and a tooth groove meshed with the transmission screw is formed in the periphery of the second chuck.
Further, the direct tensile strength test system of rock still includes the retaining member, the retaining member includes the retaining member body, the one end of retaining member body set firmly with drive screw assorted locking post, the other end of retaining member body seted up with fixed screw assorted locking hole.
Furthermore, two positioning balls are symmetrically arranged on the bottom surface of the mounting plate and the top surface of the base, and a ball sleeve matched with the positioning balls is fixedly arranged at the center of one surface of the first chuck plate, which is close to the positioning balls.
Furthermore, the power assembly comprises a driving gear, three driven gears are symmetrically meshed with the periphery of the driving gear, transmission shafts are fixedly arranged at the centers of the three driven gears, threaded rods are fixedly arranged at the tops of the transmission shafts, the tops of the threaded rods penetrate through the base, the tops of the threaded rods are rotatably connected with the top of the heating furnace, the mounting plate is horizontally sleeved on the three threaded rods, and the mounting plate is in threaded connection with the three threaded rods; and a driving motor is further arranged in the base, and the output end of the driving motor is connected with the driving gear.
Further, the experimental method of the rock direct tensile strength testing system under the real-time high-temperature environment is characterized by comprising the following steps,
s1: the height of the mounting plate is adjusted upwards through the power assembly, so that the distance between the two sample chucks is greater than the length of the sample;
s2: placing a sample between the two sample chucks, and downwards adjusting the height of the mounting plate to enable two ends of the sample to be respectively and correspondingly positioned in the two sample chucks;
s3: adjusting the diameter of the contact part of the sample chuck and the sample, and clamping and fixing the sample;
s4: starting an electric heating wire in the heating furnace to heat the sample and the experimental environment;
s5: and adjusting the height of the mounting plate upwards to perform tensile test on the sample.
The beneficial effects of the invention are: compared with the prior art, the invention has the improvement that,
1. the system for testing the direct tensile strength of the rock under the real-time high-temperature environment combines the real-time high-temperature heating device and the direct tensile mechanical device, so that the high-temperature environment of the sample can be kept in the direct tensile testing process, heat loss in the sample heating and loading processes is prevented, the influence of a high-temperature environment field on the tensile strength behavior of the rock can be better simulated, the effectiveness of the direct tensile testing process and the preset reliability of the temperature field are ensured, and the danger of personnel operation in the experimental process is reduced under the condition that the furnace door of the heating furnace is closed.
2. When the sample chuck provided by the invention is used for clamping and fixing a sample, the second chuck plate and the clamping ring plate are fixed together under the meshing action of the transmission screw, the second chuck plate and the clamping ring plate are rotated to drive the restraint rods to move in the corresponding arc-shaped through holes and radial holes so as to preliminarily fix the sample, then the first disc and the clamping ring plate are fixed by using the fixing screw, the transmission screw is rotated, and the second chuck plate can be driven to rotate relative to the clamping ring plate and the first chuck plate under the mutual meshing action of the transmission screw and tooth grooves on the periphery of the second disc so as to finely adjust the distance between the restraint rods, so that the sample can be clamped and fixed, and the sample can be prevented from being damaged.
3. The test system disclosed by the invention can be suitable for samples with different sizes, and the automatic centering of the samples can be realized through the mutual matching between the positioning balls and the ball sleeves on the bottom of the mounting plate and the top surface of the base, so that the test system is simple and convenient to operate, and the precision of an experiment can be improved.
4. According to the invention, the mounting plate is adjusted up and down, so that the sample can be mounted conveniently, and the sample can be stretched by adjusting the position of the mounting plate, therefore, the tensile strength of the sample is tested, no other stretching device is required to be arranged, the structure is simple, and the operation is convenient.
Drawings
FIG. 1 is a schematic diagram of a test system according to the present invention.
Fig. 2 is a schematic view of the structure of the sample holder of the present invention.
Fig. 3 is a sectional view showing the internal structure of the sample holder according to the present invention.
Fig. 4 is an exploded view of the sample holder structure of the present invention.
FIG. 5 is a schematic diagram of a first chuck structure according to the present invention.
FIG. 6 is a schematic view of a retainer ring plate according to the present invention.
FIG. 7 is a schematic view of the structure of the heating furnace of the present invention.
FIG. 8 is a schematic view of a power assembly of the present invention.
FIG. 9 is a schematic view of the locking member of the present invention.
Wherein: 1-base, 2-heating furnace, 201-furnace door, 3-heating wire, 4-mounting plate, 5-sample chuck, 501-first chuck, 5011-first disk, 5012-second disk, 5013-connecting shaft, 5014-arc through hole, 5015-first chute, 5016-second chute, 5017-threaded hole, 502-second chuck, 5021-mounting through hole, 5022-radial hole, 5023-tooth groove, 503-clamping ring plate, 5031-first ring, 5032-second ring, 5033-fixing block, 5034-transmission hole, 5035-transmission screw, 504-restraining rod, 5041-limiting plate, 505-fixing screw, 6-sample, 7-power assembly, 701-driving gear, 702-driven gear, 703-transmission shaft, 704-threaded rod, 705-driving motor, 8-positioning ball, 9-ball sleeve, 10-locking piece, 1001-locking piece body, 1002-locking post, 1003-locking hole.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following further describes the technical solution of the present invention with reference to the drawings and the embodiments.
Referring to fig. 1-9, the system for testing the direct tensile strength of rock in a real-time high-temperature environment comprises a base 1, wherein a heating furnace 2 is installed at the top of the base 1, an electric heating wire 3 is installed on the inner side wall of the heating furnace 2, the inner space of the heating furnace 2 can be heated through the electric heating wire 3, and the heating wire 3 is connected with an external power supply; a mounting plate 4 is arranged in the heating furnace 2 in a vertically sliding manner, two sample chucks 5 are symmetrically arranged on the bottom surface of the mounting plate 4 and the top surface of the base 1, the two sample chucks 5 are both positioned in the heating furnace 2, and a sample 6 is arranged between the two sample chucks 5; install in the base 1 and be used for the drive power component 7 that mounting panel 4 reciprocated, just power component runs through top position behind the top surface of base 1 in heating furnace 2.
Specifically, the power assembly 7 comprises a driving gear 701, three driven gears 702 are symmetrically meshed with the periphery of the driving gear 701, transmission shafts 703 are fixedly arranged at the centers of the three driven gears 702, threaded rods 704 are fixedly arranged at the tops of the transmission shafts 703, the tops of the threaded rods 704 penetrate through the base 1, the tops of the threaded rods 704 are rotatably connected with the top of the heating furnace 2 through bearings, the mounting plate 4 is horizontally sleeved on the three threaded rods 704, and the mounting plate 4 is in threaded connection with the three threaded rods 704; a driving motor (not shown in the figure) is further arranged in the base 1, and an output end of the driving motor is connected with the driving gear 701. The driving motor drives the driving gear 701 to rotate, the driving gear 701 rotates and simultaneously drives the three driven gears 702 and the threaded rods 704 thereon to synchronously rotate, and the three threaded rods 704 rotate to drive the mounting plate 4 connected with the three threaded rods to move slightly, so that the height of the mounting plate 4 is adjusted.
The sample chuck 5 comprises a first chuck plate 501, a second chuck plate 502, a clamping ring plate 503 and a plurality of constraint rods 504, the second chuck plate 502 is sleeved in the middle of the first chuck plate 501, the second chuck plate 502 is rotationally connected with the first chuck plate 501, the clamping ring plate 503 is also sleeved on the first chuck plate 501, the clamping ring plate 503 is rotationally connected with the first chuck plate 501, the clamping ring plate 503 is arranged between the first chuck plate 501 and is used for aligning the clamping ring plate 503 with a fixing screw 505 for fixing the first chuck plate 501, a transmission assembly is arranged between the clamping ring plate 503 and the second chuck plate 502, and the constraint rods 504 are movably connected with the first chuck plate 501 and the second chuck plate 502.
More specifically, first chuck 501 includes first disc 5011 and second disc 5012, first disc 5011 with connect through connecting axle 5013 between the center of second disc 5012 and form overall structure, first disc 5011 with a plurality of arc through-hole 5014 have been seted up to the correspondence on the second disc 5012, the number of arc through-hole 5014 with the number of about pole 504 is the same, every about pole 504 runs through corresponding arc through-hole 5014, the one end of about pole 504 has set firmly limiting plate 5041, the size of limiting plate 5041 is greater than the size of arc through-hole 5014, limiting plate 5041 can avoid about pole 504 to break away from in arc through-hole 5014, it needs to explain that be located the sample chuck 505 of top, limiting plate 5041 is located the top of about pole 504, is located the sample chuck 5 of below, about pole 504 is located the topmost of whole sample chuck 5, therefore, except that the bottom of about pole 504 is provided with limiting plate 5041, also is provided with 5041 in the centre of about pole 504, avoids about pole 504 landing.
The second chuck 502 is of a disc-shaped structure, a mounting through hole 5021 matched with the connecting shaft 5013 is formed in the center of the second chuck 502, the second chuck 502 is sleeved on the connecting shaft 5013 through the mounting through hole 5021, the second chuck 502 is located between the first disc 5011 and the second disc 5012, the second chuck 502 can rotate around the connecting shaft 5013, a plurality of radial holes 5022 corresponding to the arc-shaped through holes 5014 are formed in the second chuck 502, the radial holes 5022 are communicated with the mounting through hole 5021, each restraint rod 504 sequentially penetrates through the arc-shaped through hole in the first disc 5011, the radial holes 5022 in the second chuck 502 and the arc-shaped through holes 5014 in the second disc 5012; when the second disk 5012 rotates 5012, the restraining bar 504 is rotated, so that the restraining bar 504 moves in the corresponding arc-shaped through hole 5014.
The clamping ring plate 503 comprises a first ring 5031 and a second ring 5032, the first ring 5031 and the second ring 5032 are fixedly connected through a fixing block 5033, a first sliding slot 5015 matched with the first ring 5031 is formed in the outer periphery of the first disk 5011, a second sliding slot 5016 matched with the second ring 5032 is formed in the outer periphery of the second disk 5012, the fixing block 5033 corresponds to the second chuck 502, and the fixing block 5033 is located on the outer side of the second chuck 502. The first circular disc 5011 is provided with a plurality of threaded holes 5017 matched with the fixing screws 505, the threaded holes 5017 are communicated with the first sliding slots 5015, and after the fixing screws 505 are screwed in, the first circular disc 5011 and the first ring 5031 can be fixed, so that the first chuck 501 and the clamping ring plate 503 are fixed to form an integral structure.
The transmission assembly comprises a transmission hole 5034 formed in the fixed block 5033, the inner side wall of the transmission hole 5034 in the front-back direction is provided with threads, the transmission hole 5034 is also communicated in the left-right direction, a transmission screw 5035 is connected in the transmission hole 5034 in a threaded manner, the transmission screw 5035 is of a hollow structure, a tooth groove 5023 meshed with the transmission screw 5035 is arranged on the periphery of the second chuck 502, one side of the transmission screw 5035 close to the second chuck 502 is meshed with the tooth groove 5023, and when the transmission screw 5035 is rotated, the second chuck 502 can be driven to rotate by the meshing of the transmission screw 5035 and the tooth groove 5023.
Further, the direct tensile strength test system in rock still includes retaining member 10, retaining member 10 includes retaining member body 1001, the one end of retaining member body 1001 set firmly with drive screw 5035 assorted locking post 1002, drive screw 5035 is hollow structure, and inside hollow structure can be the hexagon, and locking post 1002 then is hexagonal prism structure, locking post 1002 be used for rotating drive screw 5035, the other end of retaining member body 1001 seted up with fixed screw 505 assorted locking hole 1003, locking hole 1003 is used for rotating fixed screw 505.
Furthermore, two positioning balls 8 are symmetrically arranged on the bottom surface of the mounting plate 4 and the top surface of the base 1, a ball sleeve 9 matched with the positioning balls 8 is fixedly arranged at the center of one surface of the first chuck plate 501 close to the positioning balls 8, and the two sample chucks 5 can be automatically centered through the mutual matching between the positioning balls 8 and the ball sleeve 9.
Further, the front side of the heating furnace 2 is provided with a furnace door 201, the furnace door 201 is hinged with the heating furnace 2, and when the furnace door 201 is closed, a closed space is formed in the heating furnace 2.
The experimental method of the system for testing the direct tensile strength of the rock in the real-time high-temperature environment comprises the following steps,
s1: opening the furnace door 201 of the heating furnace 2, and adjusting the height of the mounting plate 4 upwards through the power assembly 7 to enable the distance between the two sample chucks 5 to be larger than the length of the sample 6;
specifically, a driving motor connected with a driving gear 701 is started, and the mounting plate 4 is driven to move upwards through the meshing of the driving gear 701 and a driven gear 702, so that the distance between two sample chucks 5 is greater than the length of a sample 6;
s2: placing a sample 6 between the two sample chucks 5, controlling the driving motor to rotate reversely, and downwards adjusting the height of the mounting plate 4 to ensure that two ends of the sample 6 are respectively and correspondingly positioned in the two sample chucks 5;
s3: adjusting the diameter of the contact part of the sample chuck 5 and the sample 6, and clamping and fixing the sample 6;
specifically, the fixing screw 505 is firstly screwed out of the threaded hole 5017, the transmission screw 5035 is kept meshed with the tooth groove 5023 on the second chuck 502, under the meshing action of the transmission screw 5035, the second chuck 502 and the clamping ring plate 503 are fixed together, and the second chuck 502 and the clamping ring plate 503 are rotated to drive the restraining rod 504 to move in the corresponding arc-shaped through hole 5014 and the radial hole 5022, so that the test sample 6 is preliminarily fixed; then, the fixing screws 505 are screwed into the corresponding threaded holes 5017 to fix the first disk 5011 and the clamping ring plate 503, the locking member 10 is used to rotate the transmission threads 5035, and under the mutual meshing action of the transmission threads 5035 and the tooth grooves 5023 on the outer periphery of the second disk 502, the second chuck 502 can be driven to rotate relative to the clamping ring plate 503 and the first chuck 501, so that the distance between the constraint rods 504 can be finely adjusted, and the test sample 6 can be clamped and fixed;
s4: starting an electric heating wire 3 in the heating furnace 2 to heat the sample 6 and the experimental environment;
specifically, the furnace door 201 of the heating furnace 2 is closed, the heating wire 3 is started to heat the sample 6 and the experimental environment in the heating furnace 2, and a temperature sensor can be installed in the heating furnace 2 to monitor the temperature of the sample environment;
s5: the height of the mounting plate 4 was adjusted upward to perform a tensile test on the test specimen 6.
Specifically, the driving motor is started, and as described in step S1, the height of the mounting plate 4 is adjusted upward, so that the top of the test specimen 6 is stretched, and the tensile strength of the test specimen 6 is tested.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a direct tensile strength test system of rock under real-time high temperature environment, includes base (1), its characterized in that: the top of the base (1) is fixedly provided with a heating furnace (2), and the inner side wall of the heating furnace (2) is provided with an electric heating wire (3); the heating furnace (2) is internally provided with a mounting plate (4) in an up-and-down sliding manner, the bottom surface of the mounting plate (4) and the top surface of the base (1) are symmetrically provided with two sample chucks (5), the two sample chucks (5) are both positioned in the heating furnace (2), and a sample (6) is arranged between the two sample chucks (5); install in base (1) and be used for the drive power component (7) that mounting panel (4) reciprocated, just power component runs through top behind the top surface of base (1) is located in heating furnace (2).
2. The system for testing the direct tensile strength of the rock in the real-time high-temperature environment according to claim 1, wherein: sample chuck (5) include first (501), second (502), centre gripping ring plate (503) and a plurality of about pole (504), second (502) cover is established in the middle of first (501), just second (502) with first (501) rotate to be connected, centre gripping ring plate (503) also overlap and are established on first (501), centre gripping ring plate (503) with first (501) rotate to be connected, just centre gripping ring plate (503) with be equipped with between first (501) and be used for right centre gripping ring plate (503) with first (501) carry out fixed screw (505) fixed, centre gripping ring plate (503) with be equipped with transmission assembly between second (502), a plurality of about pole (504) with first (501) with second (502) swing joint.
3. The system for testing the direct tensile strength of the rock in the real-time high-temperature environment according to claim 2, wherein: first (501) include first disc (5011) and second disc (5012), first disc (5011) with connect through connecting axle (5013) between the center of second disc (5012), first disc (5011) with a plurality of arc through-holes (5014) have been seted up to correspondence on second disc (5012), the number of arc through-hole (5014) with the number of about bar (504) is the same, every about bar (504) run through corresponding arc through-hole (5014), the one end of about bar (504) has set firmly limiting plate (5041), the size of limiting plate (5041) is greater than the size of arc through-hole (5014).
4. The system for testing direct tensile strength of rock under real-time high-temperature environment according to claim 3, wherein: the utility model discloses a dish-shaped structure, including connecting axle (5013), second chuck (502) be discoid structure, just the central point department of putting of second chuck (502) seted up with connecting axle (5013) assorted installation through-hole (5021), second chuck (502) pass through installation through-hole (5021) cover is established on connecting axle (5013), just second chuck (502) are located between first disc (5011) and second disc (5012), seted up on second chuck (502) a plurality of with radial hole (5022) that arc through-hole (5014) are corresponding, a plurality of radial hole (5022) all with installation through-hole (5021) intercommunication.
5. The system for testing the direct tensile strength of the rock in the real-time high-temperature environment according to claim 4, wherein: the clamping ring plate (503) comprises a first ring (5031) and a second ring (5032), the first ring (5031) is fixedly connected with the second ring (5032) through a fixing block (5033), a first sliding groove (5015) matched with the first ring (5031) is formed in the periphery of the first disc (5011), a second sliding groove (5016) matched with the second ring (5032) is formed in the periphery of the second disc (5012), and the fixing block (5033) corresponds to the second chuck (502).
6. The system for testing direct tensile strength of rock in real time under high temperature environment according to claim 5, wherein: the transmission assembly comprises a transmission hole (5034) formed in the fixed block (5033), a transmission screw (5035) is connected to the transmission hole (5034) in a threaded manner, the transmission screw (5035) is of a hollow structure, and a tooth groove (5023) meshed with the transmission screw (5035) is formed in the periphery of the second chuck (502).
7. The system for testing direct tensile strength of rock under real-time high-temperature environment according to claim 6, wherein: the direct tensile strength test system of rock still includes retaining member (10), retaining member (10) are including retaining member body (1001), the one end of retaining member body (1001) set firmly with drive screw (5035) assorted locking post (1002), the other end of retaining member body (1001) seted up with fixed screw (505) assorted locking hole (1003).
8. The system for testing the direct tensile strength of the rock in the real-time high-temperature environment according to claim 2, wherein: the bottom surface of mounting panel (4) with the top surface symmetry of base (1) is equipped with two location balls (8), first (501) be close to the one side central point department of putting of location ball (8) set firmly with location ball (8) assorted ball cover (9).
9. The system for testing the direct tensile strength of the rock in the real-time high-temperature environment according to claim 1, wherein: the power assembly (7) comprises a driving gear (701), three driven gears (702) are symmetrically meshed with the periphery of the driving gear (701), transmission shafts (703) are fixedly arranged at the centers of the three driven gears (702), a threaded rod (704) is fixedly arranged at the top of each transmission shaft (703), the top of each threaded rod (704) penetrates through the base (1), the top of each threaded rod (704) is rotatably connected with the top of the heating furnace (2), the mounting plate (4) is horizontally sleeved on the three threaded rods (704), and the mounting plate (4) is in threaded connection with the three threaded rods (704); still be equipped with driving motor in base (1), driving motor's output with driving gear (701) are connected.
10. The experimental method for the real-time rock direct tensile strength testing system in the high temperature environment according to any one of claims 1 to 9, comprising the following steps,
s1: the height of the mounting plate (4) is adjusted upwards through the power assembly (7), so that the distance between the two sample chucks (5) is greater than the length of the sample (6);
s2: placing a sample (6) between the two sample chucks (5), and downwards adjusting the height of the mounting plate (4) to enable two ends of the sample (6) to be respectively and correspondingly positioned in the two sample chucks (5);
s3: adjusting the diameter of the contact part of the sample chuck (5) and the sample (6) to clamp and fix the sample (6);
s4: starting an electric heating wire (3) in the heating furnace (2) to heat the sample (6) and the experimental environment;
s5: the height of the mounting plate (4) is adjusted upwards, and the test sample (6) is subjected to tensile test.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210854539.8A CN115308041B (en) | 2022-07-15 | 2022-07-15 | Real-time rock direct tensile strength testing system in high-temperature environment and experimental method thereof |
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| CN202210854539.8A CN115308041B (en) | 2022-07-15 | 2022-07-15 | Real-time rock direct tensile strength testing system in high-temperature environment and experimental method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075948A (en) * | 2014-07-03 | 2014-10-01 | 中国工程物理研究院化工材料研究所 | Test method of tensile and compression strength of explosive under temperature condition higher than 100 DEG C |
| CN106403618A (en) * | 2016-10-31 | 2017-02-15 | 芜湖职业技术学院 | Electric heating furnace and temperature control system thereof |
| CN107607411A (en) * | 2017-10-26 | 2018-01-19 | 新疆大学 | A kind of high-temperature tensile testing machine |
| CN108267371A (en) * | 2016-12-30 | 2018-07-10 | 核工业西南物理研究院 | A kind of high temperature and super vacuum small sample tensile creep test device |
| CN213301879U (en) * | 2020-11-20 | 2021-05-28 | 惠州市嘉良保温材料有限公司 | Tensile detection device for rock wool board |
-
2022
- 2022-07-15 CN CN202210854539.8A patent/CN115308041B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075948A (en) * | 2014-07-03 | 2014-10-01 | 中国工程物理研究院化工材料研究所 | Test method of tensile and compression strength of explosive under temperature condition higher than 100 DEG C |
| CN106403618A (en) * | 2016-10-31 | 2017-02-15 | 芜湖职业技术学院 | Electric heating furnace and temperature control system thereof |
| CN108267371A (en) * | 2016-12-30 | 2018-07-10 | 核工业西南物理研究院 | A kind of high temperature and super vacuum small sample tensile creep test device |
| CN107607411A (en) * | 2017-10-26 | 2018-01-19 | 新疆大学 | A kind of high-temperature tensile testing machine |
| CN213301879U (en) * | 2020-11-20 | 2021-05-28 | 惠州市嘉良保温材料有限公司 | Tensile detection device for rock wool board |
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| CN115308041B (en) | 2023-04-04 |
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