CN109580364A - The rotatable rock mechanics experiment machine of heavy duty - Google Patents

The rotatable rock mechanics experiment machine of heavy duty Download PDF

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Publication number
CN109580364A
CN109580364A CN201811224041.3A CN201811224041A CN109580364A CN 109580364 A CN109580364 A CN 109580364A CN 201811224041 A CN201811224041 A CN 201811224041A CN 109580364 A CN109580364 A CN 109580364A
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China
Prior art keywords
rotating mechanism
pressure chamber
heavy duty
load
rock mechanics
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CN201811224041.3A
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CN109580364B (en
Inventor
李晓
李守定
赫建明
郑博
毛天桥
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Institute of Geology and Geophysics of CAS
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Institute of Geology and Geophysics of CAS
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G01N3/12Pressure testing
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0001Type of application of the stress
    • G01N2203/0003Steady
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0016Tensile or compressive
    • G01N2203/0019Compressive
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003Generation of the force
    • G01N2203/0042Pneumatic or hydraulic means
    • G01N2203/0048Hydraulic means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058Kind of property studied
    • G01N2203/006Crack, flaws, fracture or rupture
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058Kind of property studied
    • G01N2203/0069Fatigue, creep, strain-stress relations or elastic constants
    • G01N2203/0075Strain-stress relations or elastic constants
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/06Indicating or recording means; Sensing means
    • G01N2203/0641Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
    • G01N2203/0647Image analysis
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00Investigating materials by wave or particle radiation
    • G01N2223/03Investigating materials by wave or particle radiation by transmission
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00Investigating materials by wave or particle radiation
    • G01N2223/10Different kinds of radiation or particles
    • G01N2223/101Different kinds of radiation or particles electromagnetic radiation
    • G01N2223/1016X-ray
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00Investigating materials by wave or particle radiation
    • G01N2223/60Specific applications or type of materials
    • G01N2223/607Specific applications or type of materials strain

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The invention belongs to mechanics experimental equipment technical fields, and in particular to a kind of rotatable rock mechanics experiment machine of heavy duty.Testing machine of the invention includes fixing component, carry rotating mechanism, pressure chamber and load rotating mechanism, carrying rotating mechanism and load rotating mechanism are respectively provided on the fixing element, pressure chamber is connected between carrying rotating mechanism and load rotating mechanism, during the test, carry rotating mechanism, pressure chamber and load rotating mechanism can rotate synchronously, reaction of bearing is born by fixing component, bigger reaction of bearing is able to bear compared with existing CT testing machine, it is able to carry out the load test of bigger load, load test can be carried out to larger sized test specimen, CT scan result is set preferably to reflect reality the heterogeneity of geologic body, noncontinuity and post-failure behavior, during carrying out load test, CT scan can be carried out to test specimen, to obtain the configuration state that test specimen is in stress state , it is more advantageous to scientific research.

Description

The rotatable rock mechanics experiment machine of heavy duty
Technical field
The invention belongs to mechanics experimental equipment technical fields, specifically provide a kind of rotatable rock mechanics experiment machine of heavy duty.
Background technique
World today's resources exploration is drive on boldly to earth energy and disaster (2000~ten thousand metres), this kind of resource Exploitation need to use ultra-deep straight well and horizontal well and it is necessary to reservoir carry out geologic body transformation, implement rock fracture anatonosis. The Efficient Development of this kind of resource must solve great basic problem in science, and " rupture of the geologic body under pressure and temp effect is formed Develop, gas-liquid migration rule and physical property variation characteristic ", this is also to recognize geologic body state and the front line science of geological process is asked Topic.
Conventional rock mechanical test can obtain macro-stress-strain curve of sample, obtain the sheet of rock deformation and failure Structure relational model, and then for instructing engineering design.However these test methods can not know the rupture evolution of rock interior Journey and mechanism can not know the dynamic process of material migration and conversion.The inherence of geologic body macroscopic view presentation cannot thus be disclosed The limitation of essential reason, conventional test methods and means becomes rupture of the exploration geologic body under pressure and temp effect and is formed Develop, the bottleneck of gas-liquid migration rule and physical property variation characteristic.
In the prior art, this for observing rock interior deformation failure by CT technical application into rock mechanics experiment Equipment can make people recognize the secret of rock interior rupture to a greater extent, can extend spy of the people to the deep resource energy Know and development level.CT technology promotes and applies rapidly in ground field and becomes effective hand of research underbead crack Evolution Section.
But existing CT rock test rig is and the branch that pressure chamber is able to bear using pressure chamber as reaction of bearing frame Support counter-force is smaller, and the load for causing CT rock test rig that can apply is relatively low, and rigidity is extremely low, so that determining can use Rock sample it is small-sized, lead to cannot to obtain rock Complete Stress-Strain Curve, CT scan result cannot reflect reality geology Heterogeneity, noncontinuity and the post-failure behavior of body, are unfavorable for scientific research.
Therefore, this field needs the rotatable rock mechanics experiment machine of heavy duty of one kind newly to solve the above problems.
Summary of the invention
In order to solve the above problem in the prior art, in order to solve the applicable test sample of existing CT rock test rig Product size is small, leads to the Complete Stress-Strain Curve that cannot obtain test specimen, and CT scan result cannot reflect reality geologic body The problem of heterogeneity, noncontinuity and post-failure behavior, the present invention provides a kind of rotatable rock mechanics experiment machine of heavy duty, The rotatable rock mechanics experiment machine of heavy duty includes fixing component, carrying rotating mechanism, pressure chamber and load rotating mechanism, institute It states carrying rotating mechanism and the load rotating mechanism is respectively provided on the fixing member, the pressure chamber is connected to described hold Carry between rotating mechanism and the load rotating mechanism, during the test, the carrying rotating mechanism, the pressure chamber and The load rotating mechanism can rotate synchronously.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, the fixing component include bottom plate, Top plate and the multiple columns being arranged between the bottom plate and the top plate, the carrying rotating mechanism are arranged in the bottom plate On, the load rotating mechanism is arranged on the top plate.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, the carrying rotating mechanism includes rotation Turn platform, the first rotary oil cylinder, self-aligning thrust roller bearing, the first drive member and the first driving member, the rotating platform The top of first rotary oil cylinder is set, and first rotary oil cylinder and first drive member are arranged at the bottom On plate, the bottom of first rotary oil cylinder is arranged in the self-aligning thrust roller bearing, and first drive member passes through institute The first driving member is stated to be connect with the rotating platform to drive the rotating platform to rotate, during the test, the rotation Platform can be connect with the bottom of the pressure chamber and the top of the pressure chamber can be connect with the load rotating mechanism To drive the pressure chamber and the load rotating mechanism to rotate synchronously.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, first rotary oil cylinder includes the One cylinder body and it is arranged in the intracorporal first piston of the first cylinder, first cylinder body is fixed on the bottom plate, and described the The top of one piston is stretched out first cylinder body and is connect with the rotating platform, and the bottom of the first piston stretches out described first Cylinder body is connect with the self-aligning thrust roller bearing.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, first drive member is servo Motor, first driving member include retarder, small pulley, belt, big belt wheel and big belt wheel pedestal, the servo motor Output shaft is connect by the retarder with the small pulley, and the small pulley is connect by the belt with the big belt wheel, The big belt wheel pedestal is fixed on the top of first cylinder body, and the big belt wheel is arranged in the big belt wheel in a manner of rotationally It is connect on pedestal and with the rotating platform.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, it is provided in the big belt wheel multiple Guide sleeve, the bottom of the rotating platform are provided with multiple guide rods, and the multiple guide sleeve and the multiple guide rod match It closes so that the big belt wheel to be connect with the rotating platform.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, the upper surface of the big belt wheel pedestal It is provided with Circular gratings read head, the lower surface of the big belt wheel is provided with Circular gratings ruler, when big belt wheel rotation, the round light Grid read head can read the scale on the Circular gratings ruler in real time to detect the angular displacement of the big belt wheel.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, the load rotating mechanism includes the Two rotary oil cylinders, rotary slip ring and torque limiter, second rotary oil cylinder are fixed on the top plate, the rotary slip ring The top of second rotary oil cylinder is set, and the bottom of second rotary oil cylinder passes through the torque limiter and the pressure The connection of power room.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, second rotary oil cylinder includes the Two cylinder bodies and it is arranged in the intracorporal second piston of the second cylinder, the rotary slip ring includes connected stator and rotor, described Second cylinder body is fixed on the top plate by cylinder body connector, and the stator is fixed on the top of second cylinder body, described Axis is provided with through-hole inside second piston, the top of the second piston is stretched out second cylinder body and connected with the rotor It connects, the bottom of the second piston is stretched out second cylinder body and connect by the torque limiter with the pressure chamber.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, the rotatable rock mechanics of heavy duty Testing machine further includes follower, and the follower is arranged on the top plate, and the follower is set as being tried The carrying rotating mechanism, the pressure chamber and the load rotating mechanism can be followed to rotate synchronously when testing.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, the follower includes the second drive Dynamic component, the second driving member and servo-actuated turntable, second drive member, second driving member and the servo-actuated turntable It is arranged on the top plate, second drive member is connect by second driving member with the servo-actuated turntable to drive Move the servo-actuated turntable rotation.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, second drive member is driving Motor, second driving member are pinion gear and gear wheel, and second driving motor is fixed on the top plate, described big Gear is arranged on the top plate in a manner of rotationally, and the output shaft of the driving motor is connect with the pinion gear, described small Gear is connect with the gear wheel, and the servo-actuated turntable is fixed on the gear wheel.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, the pressure chamber includes pedestal, pressure Power room cylinder, upper end cover, pressure piston and the push-down head and seaming chuck being arranged in the pressure chamber cylinder, the pressure chamber cylinder Bottom is connect with the pedestal, and the top of the pressure chamber cylinder is connect with the upper end cover, and the push-down head is arranged at the bottom On seat, the bottom of the pressure piston is arranged in the seaming chuck, and during the test, the upper end cover can be with the torque Limiter connection, the top of the pressure piston can stretch out the upper end cover and connect with the second piston.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, the pressure chamber cylinder is located at test sample The wall thickness that grade is set is less than the pressure chamber cylinder and is located at the wall thickness around test specimen position.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, the pressure chamber further includes high/low temperature Slip ring and heat exchanger tube, outside the pressure chamber cylinder, the heat exchanger tube is arranged in the pressure chamber high/low temperature slip ring sleeve In cylinder, during the test, it can be recycled by high/low temperature slip ring to the heat exchanger tube and provide high/low temperature liquid to control the pressure The temperature of confining pressure oil in power room.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, the high/low temperature slip ring includes being connected High/low temperature stator and high/low temperature rotor, the high/low temperature stator connect with the fixing component, the high/low temperature rotor and institute State pressure chamber cylinder connection.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, it is provided on the high/low temperature stator First inlet, the first liquid return hole, lead channel and liquid return trough are provided with the second inlet and second time on the high/low temperature rotor Liquid mouth, when the high/low temperature rotor is with respect to high/low temperature stator rotation, the lead channel always with first inlet and institute The connection of the second inlet is stated, the liquid return trough is connected to first liquid return hole and second liquid return hole always.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, is provided in the pressure chamber cylinder Three inlets and third liquid return hole, second inlet are connected to by the third inlet with one end of the heat exchanger tube, Second liquid return hole is connected to by the third liquid return hole with the other end of the heat exchanger tube.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, also set up on the high/low temperature stator There are the first sealing ring, the second sealing ring and third sealing ring, the downside of the lead channel is arranged in first sealing ring, described Second sealing ring is arranged between the lead channel and the liquid return trough, and the upper of the liquid return trough is arranged in the third sealing ring Side.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, the pressure chamber further include bulb and The bottom of ball cup, the bulb is arranged in plane, the spherical setting in the top of the bulb, and the bottom of the ball cup is in ball Cambered surface setting, the spherical cambered surface of the ball cup are adapted with the spherical surface of the bulb, and the top of the ball cup is arranged in plane, During the test, the bottom of the bulb can be connect with the seaming chuck, and the top of the bulb can be with the bulb The bottom connection of seat, the top of the ball cup can be connect with the bottom of the pressure piston.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, the first pressure is provided on the bulb Ceasma and/or the first seepage flow hole.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, second is provided on the seaming chuck Pressure break hole or the second seepage flow hole.
In the optimal technical scheme of the above-mentioned rotatable rock mechanics experiment machine of heavy duty, the rotatable rock mechanics of heavy duty Testing machine further includes transport vehicle, guide rail and fixed frame, and the fixed frame is fixed on the bottom plate, and the guide rail is arranged described On fixed frame, during the test, the pressure chamber be can be placed on the transport vehicle, and the transport vehicle can be led described It is moved on rail to drive the pressure chamber mobile.
It will be appreciated to those of skill in the art that in the preferred technical solution of the present invention, by the way that whirler will be carried Structure and load rotating mechanism are respectively provided on the fixing element, by fixing component as reaction of bearing frame, are held during the test By reaction of bearing, relative to existing CT rock mechanics experiment machine by pressure chamber as reaction of bearing frame, fixing component can Bigger reaction of bearing is born, testing machine of the invention is made to be able to carry out the load test of bigger load, so as to bigger The test specimen of size carries out load test, to obtain the Complete Stress-Strain Curve of test specimen, and makes CT scan structure The heterogeneity and noncontinuity for the geologic body that can preferably reflect reality are more advantageous to scientific research, also, pressure chamber are connected Connect carrying rotating mechanism and load rotating mechanism between, during carrying out load test, carry rotating mechanism, pressure chamber with And load rotating mechanism can rotate synchronously in order to carry out CT scan to test specimen, be in load shape to obtain test specimen The configuration state of state, is more advantageous to scientific research.
Further, it is provided with self-aligning thrust roller bearing in the bottom of the first rotary oil cylinder, by the bottom of first piston It is connect with self-aligning thrust roller bearing, during the test, self-aligning thrust roller bearing can play limit to first piston Effect, limitation first piston is contacted with the upper end cover of the first cylinder body, thus guarantee that first piston is in suspended state, moreover, First piston is in plumbness always under the action of self-aligning thrust roller bearing, and the top of first piston and rotating platform connect It connects, to improve the stability of rotation of rotating platform.
Further, Circular gratings read head is set at the upper surface of big belt wheel pedestal, is set at the lower surface of big belt wheel Circular gratings ruler is set, when big belt wheel rotation, Circular gratings read head can read the scale on Circular gratings ruler in real time, pass through the number of detection According to the corner and revolving speed of big belt wheel can be calculated, to realize the high-precision control of rotating platform.
Still further, being provided with rotary slip ring at the top of the second rotary oil cylinder, rotary slip ring includes connected stator And rotor, stator are fixed on the top of the second cylinder body, and axis is provided with through-hole, the top of second piston in the inside of second piston Portion stretches out the second cylinder body and connect with rotor, and the bottom of second piston stretches out the second cylinder body and passes through torque limiter and pressure chamber Connection.During the test, the indoor sensor line of pressure is connected to the interface of rotor by the through-hole inside second piston On, and sensor signal extraction is transferred on the console on ground by stator, since stator is fixed on the second cylinder body, Fixed during test, so as to avoid the problem that occurring during the test route winding, guarantee test can be suitable Benefit carries out.Also, pressure chamber is connect by torque limiter with second piston, and the transmitting of Lai Jinhang torque is turned round when torque is excessive Square limiter disengages automatically, and pressure chamber can be prevented to be damaged because torque is excessive, to improve the use longevity of pressure chamber Life.
Further, testing machine is also provided with follower, and follower can follow carrying to revolve during the test Rotation mechanism, pressure chamber and load rotating mechanism rotate synchronously.Setting in this way can will provide confining pressure for pressure chamber The load pump of the test(ing) liquids such as liquid, Leachate site and fracturing fluid is fixed on follower, by confining pressure pipeline, seepage flow pipeline and pressure break Pipeline etc. passes through the through-hole being arranged in second piston and connect with pressure chamber, and during the test, follower drives above-mentioned each Kind load pump and pressure chamber rotate synchronously, so as to avoid the problem that occurring during the test various pipelines windings.Certainly, Power control cabinet can also be arranged on follower, make power control cabinet with carrying rotating mechanism, pressure chamber and load rotating mechanism It rotates synchronously, so as to avoid the problem that occurring during the test various circuit windings, to improve the peace of testing machine Quan Xing.
Further, the wall thickness that pressure chamber cylinder is located at test specimen position is less than pressure chamber cylinder and is located at test specimen position The wall thickness of surrounding.Setting in this way, can reduce the penetration resistance of ray, to improve the quality of CT scan image.
Further, pressure chamber further includes high/low temperature slip ring and heat exchanger tube, and high/low temperature slip ring sleeve is outside pressure chamber cylinder Face, heat exchanger tube are arranged in pressure chamber cylinder.Setting in this way can be recycled to heat exchanger tube by high/low temperature slip ring and provide height For Low Temperature Liquid to control the temperature of confining pressure oil in pressure chamber, i.e. test specimen can carry out temperature field test in pressure chamber, thus Improve the functionality of pressure chamber.
Further, it is additionally provided with the first sealing ring, the second sealing ring and third sealing ring on high/low temperature stator, first The downside of lead channel is arranged in sealing ring, and the second sealing ring is arranged between lead channel and liquid return trough, and the setting of third sealing ring exists The upside of liquid return trough.Setting in this way can be avoided loss and the liquid of the liquid flowed in lead channel and liquid return trough It influences each other between body, to improve the reliability of high/low temperature slip ring.
Further, bulb and ball cup are also provided in pressure chamber, the bottom of bulb is arranged in plane, bulb The bottom of the spherical setting in top, ball cup is arranged in spherical cambered surface, and the spherical cambered surface of ball cup is adapted with the spherical surface of bulb, bulb The top of seat is arranged in plane, and during the test, bulb and ball cup are mounted between seaming chuck and pressure piston, make ball The bottom of head is connect with seaming chuck, and the top of bulb and the bottom of ball cup connect, the top of ball cup and the bottom of pressure piston Portion's connection.Setting in this way, during the test, can axial compressive force suffered by guarantee test sample perpendicular to test sample The end face of product avoids test specimen stress raisers.
Further, the rotatable rock mechanics experiment machine of heavy duty further includes transport vehicle, guide rail and fixed frame, and fixed frame is solid It is scheduled on bottom plate, guide rail is arranged on fixed frame, and during the test, pressure chamber can be placed on transport vehicle, transport vehicle energy It is enough to be moved on guide rail to drive pressure chamber mobile.Setting in this way is driven pressure chamber mobile by transport vehicle, kept away Exempt to move pressure chamber by manually, it is convenient and labor-saving, while can also avoid during artificial mobile pressure chamber to people Body damages, to improve the efficiency and safety of testing machine.
A kind of scheme 1: rotatable rock mechanics experiment machine of heavy duty, which is characterized in that the rotatable rock mechanics of heavy duty Testing machine include fixing component, carrying rotating mechanism, pressure chamber and load rotating mechanism, the carrying rotating mechanism and it is described add It carries rotating mechanism to be respectively provided on the fixing member, the pressure chamber is connected to the carrying rotating mechanism and the load is revolved Between rotation mechanism, during the test, the carrying rotating mechanism, the pressure chamber and the load rotating mechanism can be same Step rotation.
Scheme 2: the rotatable rock mechanics experiment machine of heavy duty according to scheme 1, which is characterized in that the fixing component Including bottom plate, top plate and the multiple columns being arranged between the bottom plate and the top plate, the carrying rotating mechanism setting On the bottom plate, the load rotating mechanism is arranged on the top plate.
Scheme 3: according to the rotatable rock mechanics experiment machine of heavy duty described in scheme 2, which is characterized in that the carrying rotation Mechanism includes rotating platform, the first rotary oil cylinder, self-aligning thrust roller bearing, the first drive member and the first driving member, institute The top that first rotary oil cylinder is arranged in rotating platform is stated, first rotary oil cylinder and first drive member are all provided with It sets on the bottom plate, the bottom of first rotary oil cylinder, first driving is arranged in the self-aligning thrust roller bearing Component is connect to drive the rotating platform to rotate with the rotating platform by first driving member, is being tested When, the rotating platform can be connect with the bottom of the pressure chamber and the top of the pressure chamber can be revolved with the load Rotation mechanism connection is to drive the pressure chamber and the load rotating mechanism to rotate synchronously.
Scheme 4: the rotatable rock mechanics experiment machine of heavy duty according to scheme 3, which is characterized in that first rotation Oil cylinder includes the first cylinder body and is arranged in the intracorporal first piston of the first cylinder, and first cylinder body is fixed on the bottom plate On, the top of the first piston is stretched out first cylinder body and is connect with the rotating platform, and the bottom of the first piston is stretched First cylinder body is connect with the self-aligning thrust roller bearing out.
Scheme 5: the rotatable rock mechanics experiment machine of heavy duty according to scheme 4, which is characterized in that first driving Component is servo motor, and first driving member includes retarder, small pulley, belt, big belt wheel and big belt wheel pedestal, described The output shaft of servo motor connect by the retarder with the small pulley, the small pulley by the belt with it is described greatly Belt wheel connection, the big belt wheel pedestal are fixed on the top of first cylinder body, and the big belt wheel is arranged in a manner of rotationally It is connect on the big belt wheel pedestal and with the rotating platform.
Scheme 6: according to the rotatable rock mechanics experiment machine of heavy duty described in scheme 5, which is characterized in that in the big belt wheel Be provided with multiple guide sleeves, the bottom of the rotating platform is provided with multiple guide rods, the multiple guide sleeve with it is the multiple Guide rod is matched so that the big belt wheel to be connect with the rotating platform.
Scheme 7: the rotatable rock mechanics experiment machine of heavy duty according to scheme 6, which is characterized in that the big belt wheel bottom The upper surface of seat is provided with Circular gratings read head, and the lower surface of the big belt wheel is provided with Circular gratings ruler, when the big belt wheel rotates When, the Circular gratings read head can read the scale on the Circular gratings ruler in real time to detect the angular displacement of the big belt wheel.
Scheme 8, the rotatable rock mechanics experiment machine of heavy duty according to scheme 3, which is characterized in that the load rotation Mechanism includes the second rotary oil cylinder, rotary slip ring and torque limiter, and second rotary oil cylinder is fixed on the top plate, institute The top that second rotary oil cylinder is arranged in rotary slip ring is stated, the bottom of second rotary oil cylinder passes through the torque limit Device is connect with the pressure chamber.
Scheme 9: according to the rotatable rock mechanics experiment machine of heavy duty described in scheme 8, which is characterized in that second rotation Oil cylinder includes the second cylinder body and is arranged in the intracorporal second piston of the second cylinder, the rotary slip ring include connected stator and Rotor, second cylinder body are fixed on the top plate by cylinder body connector, and the stator is fixed on second cylinder body Top is provided with through-hole along axis inside the second piston, the top of the second piston stretch out second cylinder body and with The rotor connection, the bottom of the second piston stretch out second cylinder body and pass through the torque limiter and the pressure Room connection.
Scheme 10: according to the rotatable rock mechanics experiment machine of heavy duty described in scheme 2, which is characterized in that the heavy duty can Rotating rock mechanics experiment machine further includes follower, and the follower is arranged on the top plate, and the follower is set Being set to can follow the carrying rotating mechanism, the pressure chamber and the load rotating mechanism are synchronous to turn during the test It is dynamic.
Scheme 11: the rotatable rock mechanics experiment machine of heavy duty according to scheme 10, which is characterized in that the follower Structure include the second drive member, the second driving member and servo-actuated turntable, second drive member, second driving member and The servo-actuated turntable is arranged on the top plate, and second drive member is servo-actuated by second driving member with described Turntable connection is to drive the servo-actuated turntable rotation.
Scheme 12: according to the rotatable rock mechanics experiment machine of heavy duty described in scheme 11, which is characterized in that described second drives Dynamic component is driving motor, and second driving member is pinion gear and gear wheel, and second driving motor is fixed on described On top plate, the gear wheel is arranged on the top plate in a manner of rotationally, the output shaft of the driving motor and the small tooth Wheel connection, the pinion gear are connect with the gear wheel, and the servo-actuated turntable is fixed on the gear wheel.
Scheme 13: the rotatable rock mechanics experiment machine of heavy duty according to scheme 9, which is characterized in that the pressure chamber Including pedestal, pressure chamber cylinder, upper end cover, pressure piston and the push-down head and seaming chuck being arranged in the pressure chamber cylinder, institute The bottom for stating pressure chamber cylinder is connect with the pedestal, and the top of the pressure chamber cylinder is connect with the upper end cover, the push-down head On the base, the bottom of the pressure piston is arranged in the seaming chuck for setting, during the test, the upper end cover energy Enough to connect with the torque limiter, the top of the pressure piston can stretch out the upper end cover and the second piston connects It connects.
Scheme 14: the rotatable rock mechanics experiment machine of heavy duty according to scheme 13, which is characterized in that the pressure chamber The wall thickness that cylinder is located at test specimen position is less than the pressure chamber cylinder and is located at the wall thickness around test specimen position.
Scheme 15: the rotatable rock mechanics experiment machine of heavy duty according to scheme 13, which is characterized in that the pressure chamber It further include high/low temperature slip ring and heat exchanger tube, the high/low temperature slip ring sleeve is outside the pressure chamber cylinder, the heat exchanger tube setting In the pressure chamber cylinder, during the test, it can be recycled by high/low temperature slip ring to the heat exchanger tube and high/low temperature liquid is provided To control the temperature of confining pressure oil in the pressure chamber.
Scheme 16: the rotatable rock mechanics experiment machine of heavy duty according to scheme 15, which is characterized in that the high/low temperature Slip ring includes connected high/low temperature stator and high/low temperature rotor, and the high/low temperature stator is connect with the fixing component, the height Low temperature rotor is connect with the pressure chamber cylinder.
Scheme 17: the rotatable rock mechanics experiment machine of heavy duty according to scheme 16, which is characterized in that the high/low temperature The first inlet, the first liquid return hole, lead channel and liquid return trough are provided on stator, be provided on the high/low temperature rotor second into Liquid mouth and the second liquid return hole, when the high/low temperature rotor is with respect to high/low temperature stator rotation, the lead channel is always with described the One inlet is connected to second inlet, and the liquid return trough connects with first liquid return hole and second liquid return hole always It is logical.
Scheme 18: according to the rotatable rock mechanics experiment machine of heavy duty described in scheme 17, which is characterized in that the pressure chamber It is provided with third inlet and third liquid return hole on cylinder, second inlet passes through the third inlet and the heat exchanger tube One end connection, second liquid return hole is connected to by the third liquid return hole with the other end of the heat exchanger tube.
Scheme 19: according to the rotatable rock mechanics experiment machine of heavy duty described in scheme 17, which is characterized in that the high/low temperature The first sealing ring, the second sealing ring and third sealing ring are additionally provided on stator, first sealing ring is arranged in the feed liquor The downside of slot, second sealing ring are arranged between the lead channel and the liquid return trough, and the third sealing ring setting exists The upside of the liquid return trough.
Scheme 20: the rotatable rock mechanics experiment machine of heavy duty according to scheme 13, which is characterized in that the pressure chamber It further include bulb and ball cup, the bottom of the bulb is arranged in plane, the spherical setting in the top of the bulb, the bulb The bottom of seat is arranged in spherical cambered surface, and the spherical cambered surface of the ball cup is adapted with the spherical surface of the bulb, the top of the ball cup Portion is arranged in plane, and during the test, the bottom of the bulb can be connect with the seaming chuck, the top energy of the bulb Enough to connect with the bottom of the ball cup, the top of the ball cup can be connect with the bottom of the pressure piston.
Scheme 21: according to the rotatable rock mechanics experiment machine of heavy duty described in scheme 20, which is characterized in that on the bulb It is provided with the first pressure break hole and/or the first seepage flow hole.
Scheme 22: according to the rotatable rock mechanics experiment machine of heavy duty described in scheme 21, which is characterized in that the seaming chuck On be provided with the second pressure break hole or the second seepage flow hole.
Scheme 23: the rotatable rock mechanics experiment machine of the heavy duty according to any one of scheme 2 to 22, feature exist In the rotatable rock mechanics experiment machine of heavy duty further includes transport vehicle, guide rail and fixed frame, and the fixed frame is fixed on described On bottom plate, the guide rail is arranged on the fixed frame, and during the test, the pressure chamber can be placed at the transport vehicle On, the transport vehicle can be moved on the guide rail to drive the pressure chamber mobile.
Detailed description of the invention
The preferred embodiment of the present invention described with reference to the accompanying drawings, in attached drawing:
Fig. 1 is the overall structure diagram of the rotatable rock mechanics experiment machine of heavy duty of the invention;
Fig. 2 is the structural schematic diagram of carrying rotating mechanism of the invention;
Fig. 3 is the cross-sectional view of carrying rotating mechanism of the invention;
Fig. 4 is the structural schematic diagram of load rotating mechanism of the invention;
Fig. 5 is the structural schematic diagram of pressure chamber of the invention;
Fig. 6 is the cross-sectional view of pressure chamber of the invention;
Fig. 7 is the cross-sectional view of high/low temperature slip ring of the invention;
Fig. 8 is the perspective view of bulb of the invention;
Fig. 9 is the cross-sectional view of ball cup of the invention;
Figure 10 is the cross-sectional view of the seaming chuck suitable for crushing test of the invention;
Figure 11 is the cross-sectional view of the seaming chuck suitable for seepage tests of the invention.
Specific embodiment
Firstly, it will be apparent to a skilled person that these embodiments are used only for explaining technology of the invention Principle, it is not intended that limit the scope of the invention.For example, although each component of pilot system is by a certain percentage in attached drawing It draws, but this proportionate relationship is non-unalterable, those skilled in the art, which can according to need, makes adjustment to it, to fit Answer specific application.
It should be noted that in the description of the present invention, term " center ", "upper", "lower", "top", "bottom", "inner", The direction of the instructions such as "outside" or the term of positional relationship are direction based on the figure or positional relationship, this is just for the sake of just In description, rather than indication or suggestion described device or element must have a particular orientation, constructed and grasped with specific orientation Make, therefore is not considered as limiting the invention.In addition, term " first ", " second ", " third " are used for description purposes only, It is not understood to indicate or imply relative importance.
In addition it is also necessary to explanation, in the description of the present invention unless specifically defined or limited otherwise, term " is set Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, Or it is integrally connected;It can be mechanical connection, be also possible to be electrically connected;It can be directly connected, intermediary can also be passed through It is indirectly connected, can be the connection inside two elements.To those skilled in the art, on can understanding as the case may be State the concrete meaning of term in the present invention.
The test specimen size being applicable in based on the existing CT rock test rig pointed out in background technique is small, causes to obtain Test specimen Complete Stress-Strain Curve, CT scan result cannot reflect reality the heterogeneity of geologic body, noncontinuity with And the problem of post-failure behavior.The present invention provides a kind of rotatable rock mechanics experiment machines of heavy duty, it is intended to enable testing machine into The load test of the bigger load of row is so that testing machine can carry out load test to large-sized test specimen, to be tested The Complete Stress-Strain Curve of sample, and CT scan structure is enable preferably to reflect reality the heterogeneity of geologic body, non-company Continuous property and post-failure behavior, are more advantageous to scientific research.
Specifically, as shown in Figure 1, the rotatable rock mechanics experiment machine of heavy duty includes fixing component 1, carrying rotating mechanism 2, pressure chamber 3 and load rotating mechanism 4, carrying rotating mechanism 2 and load rotating mechanism 4 are arranged in fixing component 1, pressure Room 3 is connected between carrying rotating mechanism 2 and load rotating mechanism 4, during the test, carries rotating mechanism 2, pressure chamber 3 And load rotating mechanism 4 can rotate synchronously.Setting in this way, i.e., will carrying rotating mechanism 2 and load rotating mechanism 4 It is arranged in fixing component 1, reaction of bearing frame is used as by fixing component 1, bears reaction of bearing during the test, relatively In existing CT rock mechanics experiment machine by pressure chamber as reaction of bearing frame, fixing component 1 is able to bear bigger support Counter-force makes testing machine of the invention be able to carry out the load test of bigger load, so as to larger sized test specimen Load test is carried out, to obtain the Complete Stress-Strain Curve of test specimen, and CT scan structure is enable preferably to reflect The heterogeneity and noncontinuity of real geologic body, more conducively scientific research, also, pressure chamber 3 is connected to carrying whirler Between structure 2 and load rotating mechanism 4, during carrying out load test, carrying rotating mechanism 2, pressure chamber 3 and load rotation Mechanism 4 can rotate synchronously in order to carry out CT scan to test specimen, to obtain the structure that test specimen is in stress state State is more advantageous to scientific research.
Preferably, as shown in Figure 1, fixing component 1 include bottom plate 11, top plate 12 and setting bottom plate 11 and top plate 12 it Between multiple columns 13, carrying rotating mechanism 2 be arranged on bottom plate 11, load rotating mechanism 4 be arranged on top plate 12.Wherein, Bottom plate 11 and top plate 12 are arranged in rectangle, and the quantity of column 13 is 4 and is separately positioned on 4 angles of bottom plate 11 and top plate 12 On, it is of course also possible to which the shapes such as squarely or circle are arranged in bottom plate 11 and top plate 12, the quantity of column 13 is also not limited to 4 A, those skilled in the art can flexibly set the concrete shape and column 13 of bottom plate 11 and top plate 12 in practical applications Particular number, as long as being able to bear the branch during test by the fixing component 1 that bottom plate 11, top plate 12 and column 13 form Support counter-force.It is integrated moreover, column 13 can be fixedly connected or be arranged with bottom plate 11, column 13 can be consolidated with top plate 12 Fixed connection or setting are integrated, alternatively, bottom plate 11, column 13 and 12 three of top plate setting are integrated, those skilled in the art Member can flexibly set the specific type of attachment of column 13 Yu bottom plate 11 and top plate 12 in practical applications, as long as can will stand Column 13 is fixed between bottom plate 11 and top plate 12.
Preferably, as shown in Figure 1, being also provided with transport vehicle on bottom plate 11 since test specimen size is big, weight weight 51, guide rail 52 and fixed frame 53, fixed frame 53 are fixed on bottom plate 11, and guide rail 52 is arranged on fixed frame 53,51 energy of transport vehicle It is enough to be moved on guide rail 52.During the test, pressure chamber 3 is placed on transport vehicle 51, test specimen is mounted on pressure In room 3, then pressure chamber 3 is driven to be moved to testing position by transport vehicle 51.Wherein, it is provided with lead screw on guide rail 52, led to The rotation of transport motor driven lead screw is crossed to drive transport vehicle 51 to move linearly.It is of course also possible to by manual rotation's lead screw, or Person is not provided with lead screw, directly installs traveling wheel on transport vehicle 51, rolls transport vehicle 51 on track 52, then alternatively, Sliding block is set on transport vehicle 51, slides transport vehicle 51 on track 52, etc., those skilled in the art can be in reality The specific driving method and motion mode that transport vehicle 51 is flexibly set in the application of border, as long as transport vehicle 51 can be made in track 52 Upper movement.In addition it is also possible to be not provided with transport vehicle 51, pressure chamber 3 is directly moved by modes such as manually or mechanically hands, This adjustment and change to the specific move mode in pressure chamber 3 should all be limited to this without departing from the principle and scope of the present invention Within the protection scope of invention.
Preferably, as shown in Figure 1, being also set up since the size of pressure chamber 3 is also very big, weight is very heavy in 12 position of top plate Lift cylinder 6 is connected to before being tested by lift cylinder 6 with pressure chamber 3, is opened pressure chamber 3 by lift cylinder 6, Then test specimen is mounted in pressure chamber 3, then is closed pressure chamber 3 by lift cylinder 6, disconnect lift cylinder 6 and pressure Pressure chamber 3 equipped with test specimen is moved to testing position by transport vehicle 51 by the connection of power room 3.Similarly, it is completed in test Afterwards, the pressure chamber 3 that unloading is completed is moved to by transport vehicle 51 and takes dress test specimen position, be connected to lift cylinder 6 and pressure Pressure chamber 3 is opened by lift cylinder 6, then takes out test specimen out of pressure chamber 3 by room 3, then passes through lift cylinder 6 Pressure chamber 3 is closed.It is of course also possible to which operation is opened and closed to pressure chamber 3 by modes such as artificial or setting grippers.
Preferably, as shown in Figures 2 and 3, carrying rotating mechanism 2 includes rotating platform 21, the first rotary oil cylinder 22, thrust The top of the first rotary oil cylinder 22 is arranged in self-aligning roller bearing 23, the first drive member and the first driving member, rotating platform 21 Portion, the first rotary oil cylinder 22 and the first drive member are arranged on bottom plate 11, and self-aligning thrust roller bearing 23 is arranged first The bottom of rotary oil cylinder 22, the first drive member are connect with rotating platform 21 by the first driving member to drive rotating platform 21 Rotation.First rotary oil cylinder 22 includes the first cylinder body 221 and the first piston 222 being arranged in the first cylinder body 221, the first cylinder Body 221 is fixed on bottom plate 11, and the top of first piston 222 is stretched out the first cylinder body 221 and connect with rotating platform 21, first piston 222 bottom is stretched out the first cylinder body 221 and is connect with self-aligning thrust roller bearing 23, the bearing body of self-aligning thrust roller bearing 23 231 are connect by bearing connecting plate 232 with the bottom of the first cylinder body 221, and the bottom of bearing body 231 is fixed with bearing plate 233 to play the role of support to bearing body 231.During the test, the pressure of test specimen will be housed by transport vehicle 51 Power room 3 is moved to the top of rotating platform 21, starts the first rotary oil cylinder 22, increase first piston 222 with by rotating platform 21 jack up, and contact rotating platform 21 and the bottom of pressure chamber 3, rotating platform 21 is fixedly connected with the pedestal 31 of pressure chamber 3, And the top of pressure chamber 3 is connect with load rotating mechanism 4, under the driving of the first drive member, makes rotating platform 21, pressure Power room 3 and load rotating mechanism 4 rotate synchronously.
In addition, it should be noted that, the first rotary oil cylinder 22 of starting, rises first piston 222, in first piston 222 It can be limited by self-aligning thrust roller bearing 23 before being contacted with 221 upper end cover of the first cylinder body, limit first piston 222 and the first cylinder body 221 upper end cover contact, to guarantee that first piston 222 is in suspended state, moreover, in the work of self-aligning thrust roller bearing 23 It is in plumbness always with lower first piston 222, the top of first piston 222 is connect with rotating platform 21, to improve The stability of rotation of rotating platform 21.
Preferably, as shown in Figures 2 and 3, the first drive member is servo motor 24, and the first driving member includes retarder (not shown), small pulley 25, belt 26, big belt wheel 27 and big belt wheel pedestal 28, the output shaft of servo motor 24 is by subtracting Fast device is connect with small pulley 25, and small pulley 25 is connect by belt 26 with big belt wheel 27, and big belt wheel pedestal 28 is fixed on the first cylinder The top of body 221, big belt wheel 27 are arranged on big belt wheel pedestal 28 in a manner of rotationally and connect with rotating platform 21.Wherein, Servo motor 24 is fixed on bottom plate 11 by motor support base 29, is provided in big belt wheel 27 and the junction of big belt wheel pedestal 28 Bearing 20, preferably tapered roller bearing.Certainly, the first drive member may be set to be the types such as common driving motor, this Field technical staff can flexibly set the concrete type of the first drive member in practical applications, as long as passing through the first driving Component is able to carry out driving.It directly engages and connect with gear wheel in addition, the first driving member may be set to be pinion gear Etc. structure types, those skilled in the art can flexibly set the specific structure shape of the first driving member in practical applications Formula, as long as can be connect the first drive member with rotating platform 21 by the first driving member.
Preferably, as shown in figure 3, being provided with multiple guide sleeves 271 in big belt wheel 27, the bottom of rotating platform 21 is provided with Guide rod 211 is inserted into guide sleeve 271 by multiple guide rods 211, and big belt wheel 27 is able to drive rotating platform 21 together when rotating Rotation, moreover, guide rod 211 can move up in guide sleeve 271, but have one always when rotating platform 21 is jacked up It is partly interposed in guide sleeve 271.Wherein, the quantity of guide rod 211 is 10, is evenly provided on the bottom of rotating platform 21 Portion, correspondingly, the quantity of guide sleeve 271 are also 10, setting position of the guide sleeve 271 in big belt wheel 27 and guide rod 211 It corresponds, certainly, the quantity of guide rod 211 and guide sleeve 271 is not limited only to 10, and those skilled in the art can be in reality The particular number of guide rod 211 and guide sleeve 271 is flexibly set in the application of border, as long as passing through guide rod 211 and guide sleeve 271 Rotating platform 21 and big belt wheel 27 can be connected by matching.
Preferably, as shown in figure 3, in order to improve the control precision of rotating platform 21, in the upper surface of big belt wheel pedestal 28 It is provided with Circular gratings read head 71, the lower surface of big belt wheel 27 is provided with Circular gratings ruler 72, when big belt wheel 27 rotates, Circular gratings Read head 71 can read the scale on Circular gratings ruler 72 in real time, by the data of detection can calculate big belt wheel 27 corner and Revolving speed, to realize the high-precision control of rotating platform 21.
Preferably, as shown in Figure 1 and Figure 4, load rotating mechanism 4 includes the second rotary oil cylinder 41, rotary slip ring 42 and turns round Square limiter 43, the second rotary oil cylinder 41 are fixed on top plate 12, and the top of the second rotary oil cylinder 41 is arranged in rotary slip ring 42, The bottom of second rotary oil cylinder 41 is connect by torque limiter 43 with pressure chamber 3.Second rotary oil cylinder 41 includes the second cylinder body 411 and the second piston 412 that is arranged in the second cylinder body 411, rotary slip ring 42 includes connected stator 421 and rotor 422, The centre of top plate 12 is provided with circular hole, and cylinder body connector 44 passes through circular hole and is fixedly connected with top plate 12, the second cylinder body 411 It is fixedly connected with the top of cylinder body connector 44, stator 421 is fixed on the top of the second cylinder body 411,412 inside edge of second piston Axis is provided with through-hole, and the top of second piston 412 is stretched out the second cylinder body 411 and connect with rotor 422, second piston 412 Bottom is stretched out the second cylinder body 411 and is connect by torque limiter 43 with pressure chamber 3.During the test, the biography in pressure chamber 3 Sensor route is connected on the interface of rotor 422 by the through-hole inside second piston 412, and passes through stator 421 for sensor Signal extraction is transferred on the console on ground, since stator 421 is fixed on the second cylinder body 411, is fixed during the test It is motionless, to solve the problems, such as route winding.
In addition, it should be noted that, during being tested, by the second rotary oil cylinder 41 to 3 loading axis of pressure chamber Xiang Li, the pressure sensor being arranged in pressure chamber 3 are capable of the axial compressive force F2 of the second rotary oil cylinder of real-time detection 41, and will pressure Force sensor signals are transferred to pressure controller, pressure sensor signal of the pressure controller according to detection, output control signal To electro-hydraulic proportional valve, electro-hydraulic proportional valve controls the pressure F1 of the first rotary oil cylinder 22 according to control signal, is always ensured that first The pressure F1 of rotary oil cylinder 22 is greater than the pressure F2 of the second rotary oil cylinder 41, this part of power F3 is by self-aligning thrust roller bearing 23 It bears, and the pressure difference of the pressure F2 of the pressure F1 of the first rotary oil cylinder 22 and the second rotary oil cylinder 41 is definite value, i.e. thrust The power F3 that self-aligning roller bearing 23 is born is definite value, and setting in this way can effectively control self-aligning thrust roller bearing Frictional force brought by 23 controls frictional force brought by self-aligning thrust roller bearing 23 in minimum.Carry rotating mechanism 2 Support process uses mixing support, i.e. oil film+bearing support, has both played positioning and the aligning of self-aligning thrust roller bearing 23 It acts on, and reduce spin friction resistance of the testing machine under fully loaded transportation condition to have to improve the stationarity of rotating platform 21 It is controlled conducive to the high-precision rotary of rotating platform 21.
Preferably, as shown in Figure 1, the rotatable rock mechanics experiment machine of heavy duty further includes follower 8, follower 8 is set It sets on top plate 12, follower 8 is set as that carrying rotating mechanism 2, pressure chamber 3 and load can be followed during the test Rotating mechanism 4 rotates synchronously.Wherein it is possible to by setting displacement sensor with guarantee follower 8 and carrying rotating mechanism 2, Pressure chamber 3 and load rotating mechanism 4 rotate synchronously, or can be guaranteed by the fixed revolving speed of setting follower 8 with It carries rotating mechanism 2, pressure chamber 3 and load rotating mechanism 4 to rotate synchronously, those skilled in the art can be in practical applications It flexibly sets especially by which kind of mode and guarantees that follower 8 and carrying rotating mechanism 2, pressure chamber 3 and load rotate Mechanism 4 rotates synchronously.
In addition, as shown in Figure 1, adding for the test(ing) liquids such as confining pressure liquid, Leachate site and fracturing fluid can will be provided for pressure chamber 3 It carries pump 91 to be fixed on follower 8, by confining pressure pipeline, seepage flow pipeline and pressure break pipeline etc. by being arranged in second piston 412 Interior through-hole is connect with pressure chamber 3, and during the test, follower 8 drives above-mentioned various load pumps 91 synchronous with pressure chamber 3 Rotation, so as to avoid the winding problem of various pipelines.Certainly, power control cabinet 92 can also be arranged on follower 8, makes automatically controlled Cabinet 92 is rotated synchronously with carrying rotating mechanism 2, pressure chamber 3 and load rotating mechanism 4, and the winding to avoid various circuits is asked Topic.
Preferably, as shown in Figure 1, follower 8 includes the second drive member, the second driving member and servo-actuated turntable 81, Second drive member, the second driving member and servo-actuated turntable 81 are arranged on top plate 12, and the second drive member is passed by second Dynamic component is connect to drive servo-actuated turntable 81 to rotate with servo-actuated turntable 81.Wherein, the second drive member be driving motor 82, second Driving member is pinion gear 83 and gear wheel 84, and driving motor 82 is fixed on top plate 12, and gear wheel 84 is set in a manner of rotationally It sets on top plate 12, the output shaft of driving motor 82 is connect with pinion gear 83, and pinion gear 83 is connect with gear wheel 84, is servo-actuated turntable 81 are fixed on gear wheel 84.Certainly, the second drive member may be set to be the types such as servo motor, those skilled in the art The concrete type of the second drive member can be flexibly set in practical applications, as long as being able to carry out by the second drive member Driving.In addition, the second driving member may be set to be the structure types such as belt wheel and belt transmission, those skilled in the art The specific constructive form of the second transmission framework can be flexibly set in practical applications, as long as can by the second driving member Second drive member is connect with servo-actuated turntable 81.In addition, gear wheel 84 can be fixed on top by cylinder body connector 44 On plate 12, and bearing is set in the junction of gear wheel 84 and cylinder body connector 44, it is of course also possible to which gear wheel 84 is direct It is rotatablely connected with top plate 12, those skilled in the art can flexibly set the tool of gear wheel 84 Yu top plate 12 in practical applications Body type of attachment, as long as gear wheel 84 can be arranged in a rotating manner on top plate 12.
Preferably, as shown in figure 5, pressure chamber 3 include pedestal 31, pressure chamber cylinder 32, upper end cover 33, pressure piston 34 and Push-down head 35 and seaming chuck 36 in pressure chamber cylinder 32 are set, and the bottom of pressure chamber cylinder 32 is connect with pedestal 31, pressure chamber cylinder 32 top is connect with upper end cover 33, and push-down head 35 is arranged on pedestal 31, and the bottom of pressure piston 34 is arranged in seaming chuck 36. Wherein, pressure chamber cylinder 32 and pedestal 31 are to be detachably connected, and when taking dress test specimen, pressure chamber cylinder 32 and pedestal 31 can be divided From during the test, pressure chamber cylinder 32 and pedestal 31 is fixed.Push-down head 35 can be fixedly connected or be arranged with pedestal 31 It is integrated, seaming chuck 36 can be fixedly connected or be arranged with pressure piston 34 and be integrated.During the test, by test specimen It is fixed between push-down head 35 and seaming chuck 36, starts the second rotary oil cylinder 41, second piston 412 declines and drives torque limit Device 43 is moved down to be contacted with the upper end cover 33 of pressure chamber 3, and upper end cover 33 is fixedly connected with torque limiter 43, starts servo motor 24, driving first piston 222, rotating platform 21, pressure chamber 3, torque limiter 43, second piston 412 rotate synchronously, and second is living Plug 412, which continues to move down, to be contacted with pressure piston 34 and applies axial force to pressure piston 34, and pressure piston 34 transmits the force to examination Test sample.
In addition, it is noted that being provided with multiple inlet 321 (such as confining pressure liquid inlets, seepage flow in pressure chamber cylinder 32 Liquid inlet and fracturing fluid inlet etc.), inlet 321 by piping connection to the through-hole of second piston 412, and with setting Load pump 91 (such as confining pressure liquid load pump, percolating fluid load pump and fracturing fluid load pump) connection on servo-actuated turntable 81, When test, can by load pump 91 into pressure chamber 3 load test liquid (such as confining pressure liquid, percolating fluid and fracturing fluid) to examination It tests sample and carries out multi- scenarios method test.Certainly, it is additionally provided with port (not shown) in pressure chamber cylinder 32, can will set The signal for setting sensor (such as radial extended device, axial extended device and pressure sensor) acquisition in pressure chamber 3 passes through biography Sensor is routed through port and is connected in the through-hole of second piston 412, and connect with the interface of rotor 422, then pass through stator 421 are transferred to sensor signal extraction on the console on ground.
Preferably, as shown in Figs. 5 to 7, in order to increase temperature field to test specimen, height has been set in the outside of pressure chamber 3 Low temperature slip ring 37, and heat exchanger tube 38 is provided in pressure chamber cylinder 32.During the test, high/low temperature pumps (not shown) energy The temperature for providing high/low temperature liquid to control confining pressure liquid in pressure chamber 3 is enough recycled to heat exchanger tube 38 by high/low temperature slip ring 37.Specifically For, high/low temperature slip ring 37 includes the high/low temperature stator 371 and high/low temperature rotor 372 being connected, high/low temperature stator 371 and high/low temperature Rotor 372 is relatively rotatable to each other, the junction of high/low temperature stator 371 and high/low temperature rotor 372 be provided with upper bearing (metal) 373 and under Bearing 374, high/low temperature stator 371 is connect with fixing component 1, fixed during the test, high/low temperature rotor 372 and pressure Room cylinder 32 connects, and during the test as pressure chamber cylinder 32 rotates, is provided with the first inlet on high/low temperature stator 371 3711, the first liquid return hole 3712, lead channel 3713 and liquid return trough 3714, the first inlet 3711 and the equal edge of the first liquid return hole 3712 High/low temperature stator 371 is arranged radially, and lead channel 3713 and liquid return trough 3714 are along the circumferential setting one of high/low temperature stator 371 Week, the first inlet 3711 are connected to lead channel 3713, and the first liquid return hole 3712 is connected to liquid return trough 3714, the first inlet 3711 connect with the liquid outlet of high/low temperature pump, and the first liquid return hole 3712 is connect with the inlet that high/low temperature pumps, high/low temperature rotor 372 On be provided with the second inlet 3721 and the second liquid return hole 3722, the second inlet 3721 and the second liquid return hole 3722 are along height The axial setting of warm rotor 372, when high/low temperature rotor 372 is rotated with respect to high/low temperature stator 371, the second inlet 3721 and into Liquid bath 3713 is connected to always, and the second liquid return hole 3722 is connected to always with liquid return trough 3714, is provided with third in pressure chamber cylinder 32 Inlet 322 and third liquid return hole 323, the second inlet 3721 are connected to third inlet 322, third inlet 322 with change One end of heat pipe 38 is connected to, and the second liquid return hole 3722 is connected to third liquid return hole 323, third liquid return hole 323 and heat exchanger tube 38 Other end connection, so far forms a complete cycle access.High-temperature liquid from the liquid outlet that high/low temperature pumps pump out after respectively by the One inlet 3711, lead channel 3713, the second inlet 3721 and third inlet 322 enter in heat exchanger tube 38, high-temperature liquid It flows in heat exchanger tube 38 and is exchanged with the confining pressure liquid progress heat in pressure chamber cylinder 32, confining pressure liquid temperature gradually rises, and high temperature The temperature of liquid, which gradually decreases, becomes Low Temperature Liquid, Low Temperature Liquid flowed out out of heat exchanger tube 38 after by 323, second times liquid of third liquid return hole Mouth 3722, liquid return trough 3714 and the first liquid return hole 3712 enter the inlet of high/low temperature pump, so far complete the circulation of high/low temperature liquid Flowing.
Preferably, as shown in fig. 7, in order to avoid the low temperature liquid phase in the high-temperature liquid and liquid return trough 3714 in lead channel 3713 Mutually influence and the loss of liquid, are additionally provided with the first sealing ring 3715,3716 and of the second sealing ring on high/low temperature stator 371 The downside of lead channel 3713 is arranged in third sealing ring 3717, the first sealing ring 3715, and the second sealing ring 3716 is arranged in feed liquor Between slot 3713 and liquid return trough 3714, the upside of liquid return trough 3714 is arranged in third sealing ring 3717.
Preferably, as shown in fig. 6, in order to reduce the penetration resistance of ray to improve the quality of CT imaging, pressure chamber cylinder 32 Wall thickness positioned at test specimen position 324 is less than pressure chamber cylinder 32 and is located at the wall thickness around test specimen position 324.This field skill Art personnel can flexibly set pressure chamber cylinder according to factors such as the material of pressure chamber cylinder 32, test pressure and radiographic source penetration powers 32 are located at the specific wall thickness of test specimen position 324.
Preferably, as shown in fig. 6, in order to which axial compressive force suffered by guarantee test sample is perpendicular to the end face of test specimen, Test specimen stress raisers are avoided, bulb 39 and ball cup 30 are also provided in pressure chamber 3, the bottom of bulb 39 is in flat The bottom of face setting, the spherical setting in the top of bulb 39, ball cup 30 is arranged in spherical cambered surface, the spherical cambered surface and ball of ball cup 30 First 39 spherical surface is adapted, and the top of ball cup 30 is arranged in plane, and during the test, bulb 39 and ball cup 30 are installed Between seaming chuck 36 and pressure piston 34, it connect the bottom of bulb 39 with seaming chuck 36, the top of bulb 39 and ball cup 30 bottom connection, the top of ball cup 30 is connect with the bottom of pressure piston 34.Wherein, as shown in Figure 8 and Figure 9, bulb 39 On be provided with connecting hole 393, connecting hole 301 is provided on ball seat 30, bulb 39 can be elastic by spring etc. with ball cup 30 Part connection, setting in this way can guarantee that bulb 39 will not be because of self gravity after completing to test taking-up test specimen And it falls off, and bulb 39 can be rotated relative to ball seat 30 to avoid test specimen stress raisers during the test.
Preferably, it is provided with the first pressure break hole 391 as shown in Fig. 8, Figure 10 and Figure 11, on bulb, is arranged on seaming chuck 36a There is the second pressure break hole 361, the first pressure break hole 391 is connected to the second pressure break hole 361, opens on needing the sample for carrying out crushing test Equipped with circular hole, when carrying out crushing test, fracturing fluid can enter test by the first pressure break hole 391 and the second pressure break hole 361 The circular hole of sample is to carry out crushing test to test specimen.In addition, the first seepage flow hole 392 can also be set on bulb 39, on Second seepage flow hole 362 is set on pressure head 36b, is that percolating fluid can pass through the first seepage flow hole 392 and second carrying out seepage tests The upper surface of test specimen is arrived to carry out seepage tests to test specimen in seepage flow hole 362.In view of fracturing fluid and percolating fluid Injection mode is different, and one is from the circular hole injection on test specimen, and one is injected from the end face of test specimen, in order to reach Better test effect, the second pressure break hole 361 and the second seepage flow hole 362 are separately positioned on two seaming chucks 36, are being pressed When splitting test, using the seaming chuck 36a for being provided with the second pressure break hole 361, when carrying out seepage tests, using being provided with the second infiltration The seaming chuck 36b of discharge orifice 362.It, can also be with however, the first pressure break hole 391 or the first seepage flow hole 392 can only be arranged on bulb 39 First pressure break hole 391 and the first seepage flow hole 392 are arranged on same bulb 39.
So far, it has been combined preferred embodiment shown in the drawings and describes technical solution of the present invention, still, this field Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific embodiments.Without departing from this Under the premise of the principle of invention, those skilled in the art can make equivalent change or replacement to the relevant technologies feature, these Technical solution after change or replacement will fall within the scope of protection of the present invention.

Claims (10)

1. a kind of rotatable rock mechanics experiment machine of heavy duty, which is characterized in that the rotatable rock mechanics experiment machine packet of heavy duty Include fixing component, carrying rotating mechanism, pressure chamber and load rotating mechanism, the carrying rotating mechanism and the load whirler Structure is respectively provided on the fixing member, the pressure chamber be connected to the carrying rotating mechanism and the load rotating mechanism it Between, during the test, the carrying rotating mechanism, the pressure chamber and the load rotating mechanism can rotate synchronously.
2. the rotatable rock mechanics experiment machine of heavy duty according to claim 1, which is characterized in that the fixing component includes Bottom plate, top plate and the multiple columns being arranged between the bottom plate and the top plate, the carrying rotating mechanism are arranged in institute It states on bottom plate, the load rotating mechanism is arranged on the top plate.
3. the rotatable rock mechanics experiment machine of heavy duty according to claim 2, which is characterized in that the carrying rotating mechanism Including rotating platform, the first rotary oil cylinder, self-aligning thrust roller bearing, the first drive member and the first driving member, the rotation Turn the top that first rotary oil cylinder is arranged in platform, first rotary oil cylinder and first drive member are arranged at On the bottom plate, the bottom of first rotary oil cylinder, first drive member is arranged in the self-aligning thrust roller bearing It is connect by first driving member with the rotating platform to drive the rotating platform to rotate, during the test, institute State that rotating platform can be connect with the bottom of the pressure chamber and the top of the pressure chamber can be with the load whirler Structure connection is to drive the pressure chamber and the load rotating mechanism to rotate synchronously.
4. the rotatable rock mechanics experiment machine of heavy duty according to claim 3, which is characterized in that first rotary oil cylinder Including the first cylinder body and it is arranged in the intracorporal first piston of the first cylinder, first cylinder body is fixed on the bottom plate, The top of the first piston is stretched out first cylinder body and is connect with the rotating platform, and institute is stretched out in the bottom of the first piston The first cylinder body is stated to connect with the self-aligning thrust roller bearing.
5. the rotatable rock mechanics experiment machine of heavy duty according to claim 4, which is characterized in that first drive member For servo motor, first driving member includes retarder, small pulley, belt, big belt wheel and big belt wheel pedestal, the servo The output shaft of motor is connect by the retarder with the small pulley, and the small pulley passes through the belt and the big belt wheel Connection, the big belt wheel pedestal are fixed on the top of first cylinder body, and the big belt wheel is arranged in described in a manner of rotationally It is connect on big belt wheel pedestal and with the rotating platform.
6. the rotatable rock mechanics experiment machine of heavy duty according to claim 5, which is characterized in that be arranged in the big belt wheel There are multiple guide sleeves, the bottom of the rotating platform is provided with multiple guide rods, the multiple guide sleeve and the multiple guiding Bar is matched so that the big belt wheel to be connect with the rotating platform.
7. the rotatable rock mechanics experiment machine of heavy duty according to claim 6, which is characterized in that the big belt wheel pedestal Upper surface is provided with Circular gratings read head, and the lower surface of the big belt wheel is provided with Circular gratings ruler, when big belt wheel rotation, institute The scale on the Circular gratings ruler can be read in real time to detect the angular displacement of the big belt wheel by stating Circular gratings read head.
8. the rotatable rock mechanics experiment machine of heavy duty according to claim 3, which is characterized in that the load rotating mechanism Including the second rotary oil cylinder, rotary slip ring and torque limiter, second rotary oil cylinder is fixed on the top plate, the rotation Turn the top that second rotary oil cylinder is arranged in slip ring, the bottom of second rotary oil cylinder by the torque limiter with Pressure chamber's connection.
9. the rotatable rock mechanics experiment machine of heavy duty according to claim 8, which is characterized in that second rotary oil cylinder Including the second cylinder body and it is arranged in the intracorporal second piston of the second cylinder, the rotary slip ring includes connected stator and turns Son, second cylinder body are fixed on the top plate by cylinder body connector, and the stator is fixed on the top of second cylinder body Portion is provided with through-hole along axis inside the second piston, the top of the second piston stretch out second cylinder body and with institute Rotor connection is stated, the bottom of the second piston stretches out second cylinder body and by the torque limiter and the pressure chamber Connection.
10. the rotatable rock mechanics experiment machine of heavy duty according to claim 2, which is characterized in that the heavy duty is rotatable Rock mechanics experiment machine further includes follower, and the follower is arranged on the top plate, and the follower is set as The carrying rotating mechanism, the pressure chamber and the load rotating mechanism can be followed to rotate synchronously during the test.
CN201811224041.3A 2018-10-19 2018-10-19 Heavy-load rotatable rock mechanical testing machine Expired - Fee Related CN109580364B (en)

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CN203993160U (en) * 2014-08-02 2014-12-10 成都科华重型轴承有限公司 For the precision rotating device of jumbo
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