CN110031311A - The method of rapid survey rock tensile mechanical properties - Google Patents
The method of rapid survey rock tensile mechanical properties Download PDFInfo
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- CN110031311A CN110031311A CN201910420097.4A CN201910420097A CN110031311A CN 110031311 A CN110031311 A CN 110031311A CN 201910420097 A CN201910420097 A CN 201910420097A CN 110031311 A CN110031311 A CN 110031311A
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- rock sample
- attachment base
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- rock
- gripping sleeve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
- F25D3/105—Movable containers
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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
- 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
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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
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0429—Chucks, fixtures, jaws, holders or anvils using adhesive bond; Gluing
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- Analytical Chemistry (AREA)
- Combustion & Propulsion (AREA)
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- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The method of rapid survey rock tensile mechanical properties, includes the following steps, (1), production rock sample；(2), rock sample both ends are bonded with the gripping sleeve in clamping component using seccotine respectively, and the seccotine between the both ends and gripping sleeve of rock sample is quickly cooled down by solidification by rapid condensation device；(3), it is taken out from rapid condensation device after being firmly bonded between the both ends and gripping sleeve of rock sample, remaining part in the gripping sleeve at rock sample both ends and clamping component is assembled, then the clamping component at rock sample both ends is fixedly mounted on cupping machine, starts to measure rock sample tensile mechanical properties；(4), after stretching, rock sample and clamping component are removed, and rock sample and clamping component are quickly split；(5), above step (1)-(4) are repeated, continue to measure several rock sample tensile mechanical properties；(6), off-test.The present invention is convenient to disassembly, improves test efficiency.
Description
Technical field
The present invention relates to rock tension test technical fields, specifically, are related to a kind of rapid survey rock stretching mechanical
The method of performance.
Background technique
The defects of rock is heterogeneous material, and microfissure, hole are contained in inside, so that the tensile strength of rock is far below it
Compression strength, therefore rock cannot bear larger tensile stress.Tensile failure is the chief destructive of engineering rock mass and nature rock mass
One of form, the failure of engineering rock mass is often since a part of rock tensile failure, and underground engineering wall rock body many places are in three
To stress state, after engineering excavation off-load, in country rock body in some directions there may be two to be pressurized the stress to tension
State, thus need strength characteristic of the study of rocks under tensile stress state.
Chinese patent CN205826421U discloses a kind of device for measuring rocks in direct tension mechanics parameter, can be to rock
Bias-load, easy to operate, rock easy to disassemble when stone sample carries out direct tensile test, effectively avoids rock sample tension
Sample can directly measure the loaded deformation of rock sample, measurement accurately by foil gauge；But the device still has one
A little defects: being bolted between upper connecting base and lower connecting base by connection, and time-consuming and laborious, the company on gripping sleeve is mounted and dismounted
It connects column to be threadedly coupled with the threaded hole on lower connecting base, then needs for lower connecting base rotation to be tightened on connecting column when assembling, grasp
Make complexity, and is easy to produce rigging error after thread abrasion, furthermore, the both ends of the surface of rock sample are used with two groove floors
The adhesive surface of strength gluing knot, the adhesive structure is smaller, and intensity is low, is easy to happen unsticking, and test effect is bad, furthermore, it finishes
After rock tension test, it is not readily separated between the both ends of the surface of rock sample and two groove floors because seccotine acts on,
Seriously affect the efficiency of rock tension test；And when rock sample bonding, seccotine curing time is long.
In order to solve the above problems, people are seeking always a kind of ideal technical solution.
Summary of the invention
The object of the present invention is to provide a kind of method of rapid survey rock tensile mechanical properties, which is drawn
Stretch in the method for mechanical property easy for assemble or unload quick between each component, rock sample adhesive surface is big, and intensity is high, has heating
Device energy fast melt seccotine, makes quick separating between rock sample and gripping sleeve, greatly shortens the cooling and solidifying of seccotine
Time improves testing efficiency.
To achieve the above object, the present invention adopts the following technical scheme:
The method of rapid survey rock tensile mechanical properties, includes the following steps,
(1), the cylindrical rock sample of production；
(2), rock sample both ends are bonded with the gripping sleeve in clamping component using seccotine respectively, and is filled by rapid condensation
The seccotine set between the both ends and gripping sleeve by rock sample is quickly cooled down solidification；
(3), it is taken out from rapid condensation device after being firmly bonded between the both ends and gripping sleeve of rock sample, by rock sample two
Remaining part assembles in the gripping sleeve and clamping component at end, is then fixedly mounted on the clamping component at rock sample both ends
On cupping machine, start to measure rock sample tensile mechanical properties；
(4), tensile mechanical properties after the test, remove rock sample and clamping component, and by rock sample and clamping component
Quickly split；
(5), above step (1)-(4) are repeated, continue to measure several rock sample tensile mechanical properties；
(6), off-test.
Clamping component includes flexural pivot bar, the first attachment base, the second attachment base and gripping sleeve, flexural pivot bar, the first attachment base,
The center line of two attachment bases and gripping sleeve is overlapped, and flexural pivot bar includes connecting rod and the connector for being fixed on connecting rod lower end, and connector is in
Hemispherical configuration, the diameter of connector are greater than the diameter of connecting rod, the first attachment base and the second attachment base structure in disk form, the
On the upper surface compressive contact of the lower surface of a connecting seat and the second attachment base, the first attachment base and the second attachment base circumferentially
Direction is uniformly provided with four transparent vertical pin holes, and four vertical pin holes on the first attachment base are connect with second respectively
Four vertical pin holes on seat are corresponding up and down one by one and by vertical connecting pin grafting, and the first attachment base center offers installation
The diameter in hole, mounting hole place suitable for reading is identical as the diameter of connecting rod, and the diameter under mounting hole at mouth is identical as the diameter of connector, peace
Dress hole top be set as hemispherical dome structure corresponding with connector, connector is located in mounting hole, connecting rod pass through mounting hole to
The first attachment base of upper stretching, the second attachment base center offer connecting hole, and the upper surface center of gripping sleeve is fixedly connected in circle
Cylindrical connecting column, radially open up on the second attachment base and connecting column there are two between the upper and lower every horizontal pin hole, connecting column
Grafting is assemblied in connecting hole, the horizontal pin hole of two on the second attachment base respectively with two horizontal pin holes on connecting column one by one
Level connection joint pin grafting is corresponded to and passes through, two level connection joint pins are vertical and are staggered up and down, gripping sleeve lower end surface center
Vertical groove cylindrical is offered, the depth of vertical groove is more than or equal to 5cm；Cylinder is clamped between two gripping sleeves
Rock sample, the both ends of rock sample are plugged in respectively in the vertical groove of two gripping sleeves, and the excircle of gripping sleeve is set
It is equipped with and melts adhesive dispenser.
Melt the high-frequency induction heating coil that mucilage binding is set on the excircle for being set in gripping sleeve, outside high-frequency induction heating coil
Portion is provided with insulation sleeve, and the aviation plug of electrical connection high-frequency induction heating coil is equipped with outside insulation sleeve.
There is annular chamber between the vertical groove of upside and the upper end excircle of rock sample, be provided in annular chamber swollen
Contracting sleeve, breathing sleeve lateral wall offer an expansion or contraction joints, the outer circle weekly form of breathing sleeve from upper end to lower end in the axial direction
Face is along the circumferential direction uniformly provided at least two top pressures grooves；
Gripping sleeve lower end surface offers spanner operating groove identical with press slot number, and connection spanner operation is offered on gripping sleeve
The center line of the threaded hole of slot and vertical groove, threaded hole is arranged along the radial direction of gripping sleeve, and threaded hole and top pressures groove are one by one
It is corresponding, it is threaded with fastening bolt in two threaded holes, the inner end of fastening bolt presses against press trench bottom, fastening bolt
Gauge diameter be less than the diameter of top pressures groove, the head of fastening bolt is located in annular groove, and the length of fastening bolt is less than pulling
Size of the hand operating groove along gripping sleeve radial direction；The internal diameter of breathing sleeve is 1-3mm bigger than the outer diameter of rock sample, breathing sleeve
Outer diameter be equal to vertical groove internal diameter；Between the both ends of the surface of rock sample and the vertical groove inner face of two gripping sleeves and
Strength gluing knot is all made of between the both ends outer circumference surface of rock sample and the medial surface of two breathing sleeves.
Rapid condensation device includes condensation platform, two cooling cylinders and liquid nitrogen container, and condensation platform upper surface is horizontally disposed, and two
A cooling cylinder is separately positioned on condensation platform upper left side and right side, and the structure of two cooling cylinders is identical and left and right is corresponding positioned at same
On straight line, the cooling cylinder in left side is fixedly connected on the left of the upper surface of condensation platform, and the cooling cylinder on right side is slidably connected at condensation
On the right side of the upper surface of platform, liquid nitrogen container is connect with two cooling cylinders respectively by connecting tube, and the outlet of liquid nitrogen container is equipped with valve；
The cooling cylinder in left side includes the open cabinet in upside and the case lid that is fastened on the upside of cabinet, and the left side of case lid passes through hinge
It is connect with the upper end left side of cabinet, the right side of case lid is equipped with cover board vertically downward, the right side plate split of cover board and cabinet, case
It being equipped in the middle part of the right side plate of body to recessed lower semi-circular and is open, the middle part of cover board is equipped with concave up upper half circular open, on
Corresponding split is complete round, outer diameter of the circular diameter than rock sample up and down for semicircular opening and lower semi-circular opening
The edge of big 1-3mm, lower semi-circular opening and upper half circular open is respectively equipped with semicircular gasket.
The lower side of cover board is horizontal equipped with one piece of upper junction plate, the right side of cabinet respectively in the front and rear sides of upper half circular open
Side plate upper side edge the front and rear sides that lower semi-circular is open respectively it is horizontal be equipped with lower connecting plate corresponding above and below upper junction plate, two
Block upper junction plate and two pieces of lower connecting plates are connected by clamping screw.
The upper surface right side of condensation platform offers dovetail groove guide rail, and matching slidably connects dovetail in dovetail groove guide rail
Sliding block, the cooling cylinder bottom on right side are fixedly connected on the upper surface of dovetail slide block, are threaded with positioning bolt in dovetail slide block,
Positioning bolt is vertically arranged, and the screw rod bottom end of positioning bolt passes through dovetail slide block and contacts with the press of dovetail groove guide rail bottom surface.
Pressure gauge, temperature sensor and exhaust pipe are also equipped on cabinet, exhaust pipe is equipped with exhaust valve；Cabinet and case lid
Outer wall be coated with one layer of heat preservation layer.
Step (2) specifically: firstly, by the inside of the vertical groove inner face of two gripping sleeves and two breathing sleeves
One layer of seccotine is uniformly smeared in face, and then the both ends of rock sample are plugged on respectively in the vertical groove of two gripping sleeves again,
Make the both ends of the surface vertical groove inner face compressive contact with two gripping sleeves, and the both ends of rock sample respectively of rock sample
The medial surface compressive contact of outer circumference surface and two breathing sleeves, in this way, the both ends of the surface of rock sample and two gripping sleeves is perpendicular
It is filled between straight groove inner face and between the both ends outer circumference surface of rock sample and the medial surface of two breathing sleeves strong
Then power glue is tightened the fastening bolt in the spanner operating groove on gripping sleeve lower end surface using spanner, to make each fastening
The inner end of bolt respectively corresponds each press trench bottom pressed against on breathing excircle of sleeve week, and breathing sleeve stress tightens, swollen
Contracting gap reduce, then be bonded between the medial surface of two breathing sleeves and the both ends outer circumference surface of rock sample it is closer, most
Afterwards according to the length of rock sample, adjust position of the cooling cylinder on right side on condensation platform, make between two cooling cylinders away from
From the length adaptation with rock sample, guarantee the cabinet that the gripping sleeve at rock sample both ends is individually positioned in two cooling cylinders
In, the case lid of two cooling cylinders is fastened on cabinet, and case lid and cabinet are connected by clamping screw, so that rock tries
The gripping sleeve at sample both ends is just sealed in two cooling cylinders, opens the valve of liquid nitrogen container, liquid nitrogen container by connecting tube respectively to
It is filled with a certain amount of liquid nitrogen in two cooling cylinders, turns off valve, thus under the cooling effect of liquid nitrogen, the both ends of rock sample
Between face and the vertical groove inner face of two gripping sleeves and the both ends outer circumference surface of rock sample and two breathing sleeves
Seccotine between medial surface is quickly cooled down solidification.
Step (4) specifically: after extension test, rock sample and clamping component are taken from cupping machine together
Under, four vertical connecting pins between the first attachment base of clamping component and the second attachment base are dismantled respectively, make the first connection
Seat and the second attachment base quick separating, then two level connection joint pins between the connecting column on the second attachment base and gripping sleeve are torn open
Fall, makes the second attachment base and gripping sleeve quick separating, finally, high-frequency induction heating coil and extraneous power supply are connected, then high frequency
Load coil heats gripping sleeve after being powered, and heat conducts to vertical groove through gripping sleeve, seccotine is melted, such as
This, by rock sample, gripping sleeve and breathing sleeve easily, quick separating.
The present invention has substantive distinguishing features outstanding and significant progress compared with the prior art, specifically, of the invention
Pass through four vertical connecting pin grafting, the connecting column on the second attachment base and gripping sleeve between first attachment base and the second attachment base
Between by two level connection joint pin grafting, in this way, easy for assemble or unload quick, the both ends of the surface of rock sample and two gripping sleeves
Vertical groove inner face between and rock sample both ends outer circumference surface and two breathing sleeves medial surface between adopt
With strength gluing knot, then it can increase the adhesive surface of rock sample, adhesion strength is high, unsticking is not susceptible to, moreover, each fastening spiral shell
The inner end of bolt presses corresponding each press trench bottom on breathing sleeve respectively, so as to make breathing sleeve and rock sample it
Between compress fitting, guarantee that the both ends outer circumference surface of rock sample is viscous between the medial surface of corresponding two breathing sleeves respectively
Tie it is stronger, moreover, during the bonding process, the gripping sleeve at rock sample both ends is placed in two cooling cylinders, liquid nitrogen container to
It is filled with liquid nitrogen in two cooling cylinders, thus under the cooling effect of liquid nitrogen, the both ends of the surface of rock sample are perpendicular with two gripping sleeves
Seccotine between straight groove inner face and between the both ends outer circumference surface of rock sample and the medial surface of two breathing sleeves
It is quickly cooled down solidification, greatly shortens the cooling and solidifying time of seccotine；The excircle of gripping sleeve is arranged with high-frequency induction heating line
Circle, after completing a rock sample extension test, aviation plug connects power supply, and high-frequency induction heating coil is powered, to clamping
Set heating, heat conducts to vertical groove through gripping sleeve, seccotine melted, can easily, quick separating rock sample, folder
Fixed and breathing sleeve completes the extension test of multiple rock sample to repeat to bond rock sample, improves rock and stretches examination
The efficiency tested.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of clamping component of the invention.
Fig. 2 is breathing sleeve top view of the invention.
Fig. 3 is the structural schematic diagram of rapid condensation device of the invention.
Fig. 4 is the cooling cylinder right view in left side of the invention.
Fig. 5 is the cooling cylinder and condensation platform connection schematic diagram on right side of the invention.
Fig. 6 is that the both ends of rock sample and two gripping sleeves are placed on the vertical view signal in two cooling cylinders in the present invention
Figure.
Specific embodiment
The following is further explained with reference to the attached drawings the embodiment of the present invention.
As shown in figs 1 to 6, the method for rapid survey rock tensile mechanical properties, includes the following steps,
(1), the cylindrical rock sample 10 of production；
(2), 10 both ends of rock sample are bonded with the gripping sleeve 3 in clamping component using seccotine respectively, and passes through fast quickly cooling
Seccotine between the both ends of rock sample 10 and gripping sleeve 3 is quickly cooled down solidification by solidifying device；
(3), it is taken out from rapid condensation device after being firmly bonded between the both ends of rock sample 10 and gripping sleeve 3, rock is tried
The gripping sleeve 3 at 10 both ends of sample is assembled with remaining part in clamping component, then by the clamping component at 10 both ends of rock sample
It is fixedly mounted on cupping machine, starts to measure 10 tensile mechanical properties of rock sample；
(4), tensile mechanical properties after the test, remove rock sample 10 and clamping component, and by rock sample 10 and clamp
Component is quickly split；
(5), above step (1)-(4) are repeated, continue to measure several 10 tensile mechanical properties of rock sample；
(6), off-test.
Clamping component includes flexural pivot bar, the first attachment base 1, the second attachment base 2 and gripping sleeve 3, flexural pivot bar, the first attachment base
1, the center line of the second attachment base 2 and gripping sleeve 3 is overlapped, and flexural pivot bar includes connecting rod 4 and the connector 5 for being fixed on 4 lower end of connecting rod,
The structure hemispherical of connector 5, the diameter of connector 5 are greater than the diameter of connecting rod 4, and the first attachment base 1 and the second attachment base 2 are in
Disc-shaped structure, the upper surface compressive contact of the lower surface of the first attachment base 1 and the second attachment base 2, the first attachment base 1 and second
Four transparent vertical pin holes are along the circumferential direction uniformly provided on attachment base 2, four on the first attachment base 1 are vertical
Pin hole is corresponding up and down one by one with four vertical pin holes on the second attachment base 2 respectively and by vertical 6 grafting of connecting pin, and first
1 center of attachment base offers mounting hole 7, and the diameter at the place suitable for reading of mounting hole 7 is identical as the diameter of connecting rod 4, at the lower mouth of mounting hole 7
Diameter is identical as the diameter of connector 5, and 7 top of mounting hole is set as hemispherical dome structure corresponding with connector 5, connector 5
It is located in mounting hole 7, connecting rod 4 passes through mounting hole 7 and stretches out the first attachment base 1 upwards, and 2 center of the second attachment base offers connection
Hole, the upper surface center of gripping sleeve 3 are fixedly connected with connecting column 8 cylindrical, equal edge on the second attachment base 2 and connecting column 8
Radial direction open up there are two between the upper and lower every horizontal pin hole, 8 grafting of connecting column is assemblied in connecting hole, two on the second attachment base 2
A horizontal pin hole corresponds with two horizontal pin holes on connecting column 8 respectively and by 9 grafting of level connection joint pin, two water
Flushconnection pin 9 is vertical and is staggered up and down, and 3 lower end surface center of gripping sleeve offers vertical groove cylindrical, vertical recessed
The depth of slot is more than or equal to 5cm；Cylindrical rock sample 10, the both ends of rock sample 10 are clamped between two gripping sleeves 3
Portion is plugged in respectively in the vertical groove of two gripping sleeves 3, and the excircle of gripping sleeve 3, which is provided with, melts adhesive dispenser.
Melt mucilage binding and is set to the high-frequency induction heating coil 11 being set on the excircle of gripping sleeve 3, high-frequency induction heating line
It is provided with insulation sleeve 15 outside circle 11, the aviation plug 29 of electrical connection high-frequency induction heating coil 11 is equipped with outside insulation sleeve 15.
There is annular chamber between the vertical groove of upside and the upper end excircle of rock sample 10, be provided in annular chamber
Breathing sleeve 12,12 side wall of breathing sleeve offer an expansion or contraction joints 13, breathing sleeve 12 from upper end to lower end in the axial direction
External peripheral surface be along the circumferential direction uniformly provided at least two top pressures grooves, the setting of expansion or contraction joints 13, so that breathing sleeve 12
Expansion or contraction joints 13 have squeeze shrink space；
3 lower end surface of gripping sleeve offers spanner operating groove 14 identical with press slot number, offers connection spanner on gripping sleeve 3
The center line of the threaded hole of operating groove 14 and vertical groove, threaded hole is arranged along the radial direction of gripping sleeve 3, threaded hole and press
Slot corresponds, and is threaded with fastening bolt 16 in two threaded holes, the inner end of fastening bolt 16 presses against top pressures groove bottom
Portion, the gauge diameter of fastening bolt 16 are less than the diameter of top pressures groove, and the head of fastening bolt 16 is located in annular groove, fasten spiral shell
The length of bolt 16 is less than spanner operating groove 14 along the size of 3 radial direction of gripping sleeve；The internal diameter of breathing sleeve 12 compares rock sample
The big 1-3mm of 10 outer diameter, the outer diameter of breathing sleeve 12 are equal to the internal diameter of vertical groove；The both ends of the surface of rock sample 10 and two folders
Between fixed 3 vertical groove inner face and the medial surface of the both ends outer circumference surface of rock sample 10 and two breathing sleeves 12
Between be all made of strength gluing knot.
Rapid condensation device includes condensation 17, two cooling cylinders of platform and liquid nitrogen container 18, and condensation 17 upper surface of platform is horizontal
Setting, two cooling cylinders are separately positioned on condensation 17 upper left side of platform and right side, and the structure of two cooling cylinders is identical and left and right pair
It should be located along the same line, the cooling cylinder in left side is fixedly connected on the left of the upper surface of condensation platform 17, and the cooling cylinder on right side is sliding
On the right side of the dynamic upper surface for being connected to condensation platform 17, liquid nitrogen container 18 is connect with two cooling cylinders respectively by connecting tube 19, liquid nitrogen
The outlet of tank 18 is equipped with valve 20；
The cooling cylinder in left side includes the open cabinet 21 in upside and the case lid 22 for being fastened on 21 upside of cabinet, the left side of case lid 22
It is connect by hinge with the upper end left side of cabinet 21, the right side of case lid 22 is equipped with cover board 23 vertically downward, cover board 23 and case
The right side plate split of body 21, the right side plate middle part of cabinet 21, which is equipped with to recessed lower semi-circular, to be open, and the middle part of cover board 23 is equipped with
Corresponding split is complete round, the circle up and down for concave up upper half circular open, upper half circular open and lower semi-circular opening
The diameter of shape is 1-3mm bigger than the outer diameter of rock sample 10, and the edge of lower semi-circular opening and upper half circular open is respectively equipped with half
Circular gasket.Hinge and gasket are conventional designs, are not shown in figure, and gasket guarantees that case lid 22 is fastened on cabinet 21
When, so that cooling cylinder is isolated from the outside world, keeps sealing, meanwhile, seal rock sample 10 and cooling cylinder junction.
The lower side of cover board 23 is horizontal equipped with one piece of upper junction plate 24, cabinet respectively in the front and rear sides of upper half circular open
21 right side plate upper side edge the front and rear sides that lower semi-circular is open respectively it is horizontal be equipped with it is corresponding with about 24 upper junction plate under
Connecting plate 25, two pieces of upper junction plates 24 and two pieces of lower connecting plates 25 are connected by clamping screw 26.
The upper surface right side of condensation platform 17 offers dovetail groove guide rail, and matching slidably connects swallow in dovetail groove guide rail
Tail sliding block 27, the cooling cylinder bottom on right side are fixedly connected on the upper surface of dovetail slide block 27, are threaded in dovetail slide block 27
Positioning bolt 28, positioning bolt 28 are vertically arranged, and the screw rod bottom end of positioning bolt 28 passes through dovetail slide block 27 and dovetail groove guide rail
Bottom surface press contact.Dovetail groove guide rail is conventional design, and specific structure repeats no more, and dovetail groove guide rail is being not shown in the figure.
Pressure gauge 30, temperature sensor 31 and exhaust pipe 32, pressure gauge 30 and temperature sensor are also equipped on cabinet 21
31 are respectively used to the pressure and temperature in measurement cooling cylinder, to control the charge of liquid nitrogen, exhaust pipe 32 is equipped with exhaust valve
33, it is appropriate to open exhaust valve 33 according to the reading of pressure gauge 30, the liquid nitrogen in cooling cylinder is discharged to the external world by exhaust pipe 32
In atmosphere, avoid pressure in cooling cylinder excessive；The outer wall of cabinet 21 and case lid 22 is coated with one layer of heat preservation layer, which uses
In reducing the heat exchange inside cooling cylinder between ambient atmosphere, insulating layer is conventional design, is not shown in figure.
Step (2) specifically: firstly, by the vertical groove inner face of two gripping sleeves 3 and two breathing sleeves 12
Medial surface uniformly smears one layer of seccotine, and the both ends of rock sample 10 are then plugged on the vertical of two gripping sleeves 3 respectively again
In groove, make the both ends of the surface vertical groove inner face compressive contact with two gripping sleeves 3, and rock respectively of rock sample 10
The medial surface compressive contact of the both ends outer circumference surface of sample 10 and two breathing sleeves 12, in this way, the both ends of the surface of rock sample 10
Between the vertical groove inner face of two gripping sleeves 3 and the both ends outer circumference surface of rock sample 10 and two breathing sleeves 12
Medial surface between fill seccotine, then using spanner by the fastening in the spanner operating groove 14 on 3 lower end surface of gripping sleeve
Bolt 16 is tightened, so that the inner end of each fastening bolt 16 be made to respectively correspond each top pressed against on 12 excircle of breathing sleeve
Indent bottom, 12 stress of breathing sleeve tighten, expansion or contraction joints gap shrinks, then the medial surface and rock sample of two breathing sleeves 12
It is bonded closer between 10 both ends outer circumference surface, finally according to the length of rock sample 10, adjusts the cooling cylinder on right side cold
Position on solidifying platform 17, makes the length adaptation of the distance between two cooling cylinders with rock sample 10, guarantees rock sample
The gripping sleeve 3 at 10 both ends is individually positioned in the cabinet 21 of two cooling cylinders, and the case lid 22 of two cooling cylinders is fastened on cabinet
On 21, and case lid 22 and cabinet 21 are connected by clamping screw 26, so that the gripping sleeve 3 at 10 both ends of rock sample is just close
It is enclosed in two cooling cylinders, opens the valve 20 of liquid nitrogen container 18, liquid nitrogen container 18 is by connecting tube 19 respectively into two cooling cylinders
Be filled with a certain amount of liquid nitrogen, turn off valve 20, thus under the cooling effect of liquid nitrogen, the both ends of the surface of rock sample 10 with two
Between the vertical groove inner face of the gripping sleeve 3 and inside of the both ends outer circumference surface of rock sample 10 and two breathing sleeves 12
Seccotine between face is quickly cooled down solidification.
Step (4) specifically: after extension test, by rock sample 10 and clamping component together from cupping machine
It removes, four vertical connecting pins 6 between the first attachment base 1 of clamping component and the second attachment base 2 is dismantled respectively, make first
2 quick separating of attachment base 1 and the second attachment base, then by two water between the connecting column 8 on the second attachment base 2 and gripping sleeve 3
Flushconnection pin 9 is dismantled, and makes the second attachment base 2 and 3 quick separating of gripping sleeve, finally, by the boat on high-frequency induction heating coil 11
Blind plug 29 and power supply are connected, then are heated after high-frequency induction heating coil 11 is powered to gripping sleeve 3, and heat is conducted through gripping sleeve 3
To vertical groove, seccotine is melted, in this way, by rock sample 10, gripping sleeve 3 and breathing sleeve 12 easily, quick separating.
Pass through four 6 grafting of vertical connecting pin, the second connection between the first attachment base 1 and the second attachment base 2 of the invention
By two 9 grafting of level connection joint pin between connecting column 8 on seat 2 and gripping sleeve 3, in this way, easy for assemble or unload quick, rock
Between the both ends of the surface of sample 10 and the vertical groove inner face of two gripping sleeves 3 and the both ends outer circumference surface of rock sample 10 with
It is all made of strength gluing knot between the medial surface of two breathing sleeves 12, then can increase the adhesive surface of rock sample 10, bonding is strong
Degree is high, unsticking is not susceptible to, moreover, the inner end of each fastening bolt 16 presses corresponding each press on breathing sleeve 12 respectively
Trench bottom is bonded so as to make to compress between breathing sleeve 12 and rock sample 10, guarantees the both ends outer circle of rock sample 10
Bonding of the circumferential surface respectively between the medial surface of corresponding two breathing sleeves 12 is stronger, moreover, during the bonding process, by rock
The gripping sleeve 3 at 10 both ends of stone sample is placed in two cooling cylinders, and liquid nitrogen container 18 is filled with liquid nitrogen into two cooling cylinders, thus
Under the cooling effect of liquid nitrogen, between the both ends of the surface of rock sample 10 and the vertical groove inner face of two gripping sleeves 3 and rock
Seccotine between the both ends outer circumference surface of sample 10 and the medial surface of two breathing sleeves 12 is quickly cooled down solidification, greatly shortens
The cooling and solidifying time of seccotine；The excircle of gripping sleeve 3 is arranged with high-frequency induction heating coil 11, tries when completing a rock
After 10 extension test of sample, aviation plug 29 connects power supply, and high-frequency induction heating coil 11 is powered, and heats to gripping sleeve 3, heat warp
The conduction of gripping sleeve 3 melts seccotine in vertical groove, can easily, quick separating rock sample 10, gripping sleeve 3 and swollen
Contracting sleeve 12 completes the extension test of multiple rock sample 10, improves rock tension test to repeat to bond rock sample 10
Efficiency.
The above embodiments are only used to illustrate and not limit the technical solutions of the present invention, although referring to above-described embodiment to this hair
It is bright to be described in detail, those skilled in the art should understand that；Still the present invention can be modified or be waited
With replacement, without departing from the spirit or scope of the invention, or any substitutions, should all cover in power of the invention
In sharp claimed range.
Claims (10)
1. the method for rapid survey rock tensile mechanical properties, it is characterised in that: include the following steps,
(1), the cylindrical rock sample of production；
(2), rock sample both ends are bonded with the gripping sleeve in clamping component using seccotine respectively, and is filled by rapid condensation
The seccotine set between the both ends and gripping sleeve by rock sample is quickly cooled down solidification；
(3), it is taken out from rapid condensation device after being firmly bonded between the both ends and gripping sleeve of rock sample, by rock sample two
Remaining part assembles in the gripping sleeve and clamping component at end, is then fixedly mounted on the clamping component at rock sample both ends
On cupping machine, start to measure rock sample tensile mechanical properties；
(4), tensile mechanical properties after the test, remove rock sample and clamping component, and by rock sample and clamping component
Quickly split；
(5), above step (1)-(4) are repeated, continue to measure several rock sample tensile mechanical properties；
(6), off-test.
2. the method for rapid survey rock tensile mechanical properties according to claim 1, it is characterised in that: clamping component packet
Include flexural pivot bar, the first attachment base, the second attachment base and gripping sleeve, flexural pivot bar, the first attachment base, the second attachment base and gripping sleeve
Center line is overlapped, and flexural pivot bar includes connecting rod and the connector for being fixed on connecting rod lower end, connector structure hemispherical, connector
Diameter is greater than the diameter of connecting rod, the first attachment base and the second attachment base structure in disk form, the lower surface of the first attachment base with
Four are along the circumferential direction uniformly provided on the upper surface compressive contact of second attachment base, the first attachment base and the second attachment base
Transparent vertical pin hole, four vertical pin holes on the first attachment base respectively with four vertical pin holes on the second attachment base
Corresponding up and down one by one and by vertical connecting pin grafting, the first attachment base center offers mounting hole, mounting hole place suitable for reading
Diameter is identical as the diameter of connecting rod, and the diameter under mounting hole at mouth is identical as the diameter of connector, mounting hole top be set as with
The corresponding hemispherical dome structure of connector, connector are located in mounting hole, and connecting rod passes through mounting hole and stretches out the first attachment base upwards,
Second attachment base center offers connecting hole, and the upper surface center of gripping sleeve is fixedly connected with connecting column cylindrical, and second
Radially opened up on attachment base and connecting column there are two between the upper and lower every horizontal pin hole, connecting column grafting is assemblied in connecting hole
In, two horizontal pin holes on the second attachment base correspond with two horizontal pin holes on connecting column respectively and pass through level
Connecting pin grafting, two level connection joint pins are vertical and are staggered up and down, and gripping sleeve lower end surface center offers cylindrical
The depth of vertical groove, vertical groove is more than or equal to 5cm；Cylindrical rock sample, rock are clamped between two gripping sleeves
The both ends of sample are plugged in respectively in the vertical groove of two gripping sleeves, and the excircle of gripping sleeve, which is provided with, melts adhesive dispenser.
3. the method for rapid survey rock tensile mechanical properties according to claim 2, it is characterised in that: melt mucilage binding and be set to
The high-frequency induction heating coil being set on the excircle of gripping sleeve, high-frequency induction heating coil outer are provided with insulation sleeve, absolutely
The external aviation plug for being equipped with electrical connection high-frequency induction heating coil of edge set.
4. the method for rapid survey rock tensile mechanical properties according to claim 3, it is characterised in that: upside it is vertical
There is annular chamber between groove and the upper end excircle of rock sample, be provided with breathing sleeve, breathing sleeve side in annular chamber
Wall offers an expansion or contraction joints from upper end to lower end in the axial direction, and the external peripheral surface of breathing sleeve is along the circumferential direction uniformly opened
Equipped at least two top pressures grooves；
Gripping sleeve lower end surface offers spanner operating groove identical with press slot number, and connection spanner operation is offered on gripping sleeve
The center line of the threaded hole of slot and vertical groove, threaded hole is arranged along the radial direction of gripping sleeve, and threaded hole and top pressures groove are one by one
It is corresponding, it is threaded with fastening bolt in two threaded holes, the inner end of fastening bolt presses against press trench bottom, fastening bolt
Gauge diameter be less than the diameter of top pressures groove, the head of fastening bolt is located in annular groove, and the length of fastening bolt is less than pulling
Size of the hand operating groove along gripping sleeve radial direction；The internal diameter of breathing sleeve is 1-3mm bigger than the outer diameter of rock sample, breathing sleeve
Outer diameter be equal to vertical groove internal diameter；Between the both ends of the surface of rock sample and the vertical groove inner face of two gripping sleeves and
Strength gluing knot is all made of between the both ends outer circumference surface of rock sample and the medial surface of two breathing sleeves.
5. the method for rapid survey rock tensile mechanical properties according to claim 4, it is characterised in that: rapid condensation dress
It sets including condensation platform, two cooling cylinders and liquid nitrogen container, condensation platform upper surface is horizontally disposed, and two cooling cylinders are separately positioned on
Platform upper left side and right side are condensed, the structure of two cooling cylinders is identical and left and right correspondence is located along the same line, the condensation in left side
Case is fixedly connected on the left of the upper surface of condensation platform, and the cooling cylinder on right side is slidably connected on the right side of the upper surface of condensation platform,
Liquid nitrogen container is connect with two cooling cylinders respectively by connecting tube, and the outlet of liquid nitrogen container is equipped with valve；
The cooling cylinder in left side includes the open cabinet in upside and the case lid that is fastened on the upside of cabinet, and the left side of case lid passes through hinge
It is connect with the upper end left side of cabinet, the right side of case lid is equipped with cover board vertically downward, the right side plate split of cover board and cabinet, case
It being equipped in the middle part of the right side plate of body to recessed lower semi-circular and is open, the middle part of cover board is equipped with concave up upper half circular open, on
Corresponding split is complete round, outer diameter of the circular diameter than rock sample up and down for semicircular opening and lower semi-circular opening
The edge of big 1-3mm, lower semi-circular opening and upper half circular open is respectively equipped with semicircular gasket.
6. the method for rapid survey rock tensile mechanical properties according to claim 5, it is characterised in that: the downside of cover board
While horizontal equipped with one piece of upper junction plate respectively in the front and rear sides of upper half circular open, the right side plate upper side edge of cabinet is in lower half circle
The front and rear sides of shape opening respectively it is horizontal be equipped with lower connecting plate corresponding above and below upper junction plate, under two pieces of upper junction plates and two pieces
Connecting plate is connected by clamping screw.
7. the method for rapid survey rock tensile mechanical properties according to claim 6, it is characterised in that: condense platform
Upper surface right side offers dovetail groove guide rail, and matching slidably connects dovetail slide block, the cooling cylinder on right side in dovetail groove guide rail
Bottom is fixedly connected on the upper surface of dovetail slide block, and positioning bolt is threaded in dovetail slide block, and positioning bolt is vertically arranged,
The screw rod bottom end of positioning bolt passes through dovetail slide block and contacts with the press of dovetail groove guide rail bottom surface.
8. the method for rapid survey rock tensile mechanical properties according to claim 7, it is characterised in that: also pacify on cabinet
Equipped with pressure gauge, temperature sensor and exhaust pipe, exhaust pipe is equipped with exhaust valve；The outer wall of cabinet and case lid is coated with one layer
Insulating layer.
9. the method for rapid survey rock tensile mechanical properties according to claim 8, it is characterised in that: step (2) tool
Body are as follows: firstly, the medial surface of the vertical groove inner face of two gripping sleeves and two breathing sleeves is uniformly smeared one layer strong
Then power glue is respectively plugged on the both ends of rock sample in the vertical groove of two gripping sleeves again, make the both ends of rock sample
The face vertical groove inner face compressive contact with two gripping sleeves respectively, and the both ends outer circumference surface of rock sample and two it is swollen
The medial surface compressive contact of contracting sleeve, in this way, between the both ends of the surface of rock sample and the vertical groove inner face of two gripping sleeves
And rock sample both ends outer circumference surface and two breathing sleeves medial surface between fill seccotine, then use spanner
Fastening bolt in spanner operating groove on gripping sleeve lower end surface is tightened, so that the inner end of each fastening bolt be made to respectively correspond
Each press trench bottom on breathing excircle of sleeve week is pressed against, breathing sleeve stress tightens, expansion or contraction joints gap shrinks, then and two
Be bonded between the medial surface of breathing sleeve and the both ends outer circumference surface of rock sample it is closer, finally according to the length of rock sample
Degree adjusts position of the cooling cylinder on right side on condensation platform, makes the length of the distance between two cooling cylinders with rock sample
Adaptation, the gripping sleeve at rock sample both ends is individually positioned in the cabinet of two cooling cylinders by guarantee, by the case of two cooling cylinders
Lid is fastened on cabinet, and connects case lid and cabinet by clamping screw, so that the gripping sleeve at rock sample both ends is just
It is sealed in two cooling cylinders, opens the valve of liquid nitrogen container, liquid nitrogen container is filled with one into two cooling cylinders respectively by connecting tube
Quantitative liquid nitrogen, turns off valve, thus under the cooling effect of liquid nitrogen, the both ends of the surface of rock sample are perpendicular with two gripping sleeves
Seccotine between straight groove inner face and between the both ends outer circumference surface of rock sample and the medial surface of two breathing sleeves
It is quickly cooled down solidification.
10. the method for rapid survey rock tensile mechanical properties according to claim 9, it is characterised in that: step (4) tool
Body are as follows: after extension test, rock sample and clamping component are removed from cupping machine together, respectively by clamping component
The first attachment base and the second attachment base between four vertical connecting pins dismantle, keep the first attachment base and the second attachment base quick
Separation, then two level connection joint pins between the connecting column on the second attachment base and gripping sleeve is dismantled, make the second attachment base with
Gripping sleeve quick separating, finally, high-frequency induction heating coil and extraneous power supply are connected, then after high-frequency induction heating coil is powered
Gripping sleeve is heated, heat conducts to vertical groove through gripping sleeve, seccotine is melted, in this way, by rock sample, gripping sleeve
With breathing sleeve easily, quick separating.
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| CN201910420097.4A CN110031311B (en) | 2019-05-20 | 2019-05-20 | Method for rapidly measuring tensile mechanical property of rock |
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| CN111781137A (en) * | 2020-08-12 | 2020-10-16 | 山东省医疗器械产品质量检验中心 | Locking type tool for medical tissue adhesive tensile strength test and using method thereof |
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