CN107290208B - A kind of rock relaxation mechanism for testing and its experimental rig - Google Patents
A kind of rock relaxation mechanism for testing and its experimental rig Download PDFInfo
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- CN107290208B CN107290208B CN201710636513.5A CN201710636513A CN107290208B CN 107290208 B CN107290208 B CN 107290208B CN 201710636513 A CN201710636513 A CN 201710636513A CN 107290208 B CN107290208 B CN 107290208B
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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
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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
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
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Abstract
The invention discloses a kind of rock relaxation mechanism for testing, including, load cylinder, load shell, loading axis, cover plate assembly, lifting assembly；LOADED CAVITY is equipped in the load shell, the loading axis passes through load shell and enters in LOADED CAVITY, is equipped with rock sample in the LOADED CAVITY；The load shell opener end face is equipped with engaging screw rod, and the engaging screw rod is fitted into cover plate assembly and load shell assembly in the connecting hole of cover plate assembly.The invention also discloses relaxation-disturbance comprehensive experimental devices that application has above-mentioned rock relaxation mechanism for testing.The present invention can be realized relaxation-disturbance Comprehensive Experiment, can provide effective reference than more accurately restoring the real bearing state in underground of sample for design, the construction in later period.
Description
Technical field
The present invention relates to a kind of Rock Mechanics Test device, more particularly to a kind of relaxation mechanism for testing for rock and
Its experimental rig.
Background technique
Stress rheological phenomena is seen everywhere in rock mass engineering project, such as the excavation supportings such as some underground chambers, tunnel, tunnel
Rheological phenomena can occur through rock after a period of time later, and these rheological phenomenas usually contain the creep and relaxation of rock.It is right
In the rock mass for being in rheology, under the disturbance of the blast load of stope, rheological effect can be further obvious, it is possible to occur to accelerate stream
Become, so as to cause the generation of mine power disaster.Especially deeps mines underground mining is often faced with such as rock burst, gushing water, top
Plate large area is pressed and the disasters such as goaf unstability, these phenomenons are directed to rock or the long-term relaxation effect of rock mass and instantaneous
Dynamic disturbances combine problems in role.The relaxation effect of rock is a long-term process, and the dynamic such as explosion, mechanical oscillation
Disturbance is a transient effects for lithological effects, and the two differs larger in time scale, so few people are in test
Consider influence of the collective effect to material properties of rock of both effects.Therefore, under research trends disturbing influence rock pine
Relaxation effect has important theory for the permanent support of the stability and design underground rock project of evaluating underground excavation space
Meaning.
Although it has been recognized that the importance of rock relaxation effect study, due to carrying out stress relaxation examination
The strain for needing to control rock sample when testing is constant, it is desirable that and experimental facilities has the performance for keeping constant displacement load for a long time,
Experimental technique difficulty is larger, and relevant research is less.
Itd is proposed in the Chinese invention patent of 104181029 A of Publication No. CN and a kind of pendulum load in strain rate disturb
The experimental rig and method of dynamic lower rock relaxation, disturbance is generated by pendulum, with test rock in a relaxed state by
Stress state when disturbance.Although this method simple possible, when use, needs to manually adjust pendulum, but also continuous
The impact force that pendulum angle can be generated is calculated, it is cumbersome.It in addition is exactly that there are biggish peaces in pendulum rotation impact process
Full hidden danger, if operator neglects, it is likely that injured or hit other articles.
It is also exactly when carrying out relaxation-disturbance experiments, it is sometimes desirable to confining pressure be applied to rock sample, this is just needed to sample
Locating space filling hydraulic oil also means that and needs to need space locating for sample that opening is arranged, and also can guarantee
The sealing of this opening；Certainly, there is part Experiment that three-axis tester can be directly used to substitute, but most of three-axis tester
Opening is in underface and sample placement direction is all vertical direction perpendicular to the ground, and in the horizontal direction due to its width or
Length is not enough placed, and in addition general three-axis tester is usually that sample is first compressed in sample axial direction when clamping sample,
Then again will load shell sealing fastening, it is this it is total be easy to cause sample to shift, influence experimental result.Therefore think can be with by applicant
By opening design in side, placement sample can either be facilitated in this way, and can guarantee that sample has been consolidated before load shell sealing
Determine and is in design position.
Summary of the invention
In view of the above drawbacks of the prior art, technical problem to be solved by the invention is to provide a kind of relaxations of rock to survey
Test-run a machine structure is used to carry out rock the test that relaxes.
The present invention also provides relaxation-disturbance Comprehensive Experiment dresses that application has above-mentioned its experimental provision disturbance generating mechanism
It sets, relaxation-disturbance Comprehensive Experiment can be carried out to test.
To achieve the above object, the present invention provides a kind of rock relaxation mechanism for testing, including, load cylinder, load shell,
Loading axis, cover plate assembly, lifting assembly；LOADED CAVITY is equipped in the load shell, the loading axis passes through load shell and enters
In LOADED CAVITY, rock sample is installed in the LOADED CAVITY；
The load shell opener end face is equipped with engaging screw rod, and the engaging screw rod is packed into the connecting hole of cover plate assembly
It is middle to assemble cover plate assembly and load shell；
The cover plate assembly, including, it is oriented to lantern ring, the inside of the guiding lantern ring is equipped with guiding inner cylinder, described
The inner wall for being oriented to inner cylinder is equipped with half slot of guiding；
Guiding raised line on half slot of guiding and cover board shell outer wall assembles, and installation cavity is equipped in the cover board shell,
Main sliding tooth, driven small tooth are installed, the main sliding tooth is intermeshed and is formed with driven small tooth in the installation cavity
Gear transmission structure；
The driven small tooth is equipped with assembly screw hole, the assembly screw hole assembly spiral shell coaxial and described with connecting hole
Hole passes through threaded engagement assembly with screw rod is engaged；
The installation cavity by shrouding disc seal, and the shrouding disc be equipped with shrouding disc through-hole, the shrouding disc through-hole with
It is coaxial to assemble screw hole；
The main sliding tooth two sides are equipped with installation base, wherein the installation base close to shrouding disc side is equipped with hexagonal
Column is driven, the hexagonal driving column is fitted into the driving through-hole of shrouding disc；
Bearing mounting ring is equipped on the inside of the installation cavity, on the inside of shrouding disc, outside the bearing mounting ring and base bearing
Circle assembly is fixed, and the base bearing inner ring and installation base assembly are fixed；
A thrust ball bearing, described one blowout patche of thrust ball bearing are respectively equipped in the driven small tooth both ends of the surface
It is fixed with driven small increment face, another is fixed on the inside of installation cavity or on the inside of shrouding disc；The thrust ball bearing with from
It is coaxial to move small tooth.
As a further improvement of the present invention, open end 0-0.5cm sections of the engaging screw rod is not provided with screw thread and diameter
It is slightly less than engaging screw rod and threaded part is set.
As a further improvement of the present invention, the cover board shell is additionally provided with sealing block on load shell side, described
Sealing block close to load shell one end end face on be fixed with secondary loading axis, the secondary loading axis and the loading axis with its face
Coaxially；
The guiding collar footprint is connected and fixed by connecting plate with batten is connect, and the connection strap board bottom portion is fixed
Have a hinged block, it is hinged at the top of the hinged block and lifter plate, the lifter plate has two pieces and two pieces of lifter plates intersect and
Infall is hinged, and the lifter plate bottom is connected and fixed with the first slide-bar or the second slide-bar respectively.
As a further improvement of the present invention, the lifting assembly, including lifter plate, the first slide-bar and the second slide-bar,
Lifting pedestal, first slide-bar, the second slide-bar are respectively charged into the lifting guide groove that lifting guide plate is arranged in, described
First slide-bar one end is connect with lifting motor, and its rotation can be driven by lifting motor；
The first slide-bar both ends are pierced by lifting guide groove and extension end and are separately installed with lifting sliding tooth, described
Lifting sliding tooth engaged with the lifting pinion rack being fixed in lifting supporting plate and form rack pinion structure；Described
Lifting guide plate bottom is connected and fixed with lifting supporting plate；
The lifting supporting plate bottom is equipped with lifting guide runner, and the lifting guide runner is packed into setting at lifting bottom
In lifting guide chute on seat；
The first limit plate and the second limit plate are additionally provided on the lifting pedestal, first limit plate is for limiting
The position of lifting supporting plate prevents lifting supporting plate from skidding off lifting pedestal from first limit plate one end is provided with；
Second limit plate is being equipped with hinged groove with lifting guide chute corresponding position；
The lifting supporting plate and movable support rod one end are hinged, and the movable support rod other end and pedal side are cut with scissors
It connects, the pedal is equipped with pedal hinged block and treadle supporting block, and the pedal hinged block is fitted into hinged groove and passes through
Pedal articulated shaft and the second limit plate are hinged；
The treadle supporting block is used to support pedal, keeps pedal parallel with lifting pedestal.
A kind of relaxation-disturbance comprehensive experimental device, using there is above-mentioned rock relaxation mechanism for testing.
It as a further improvement of the present invention, further include rack, disturbance generating mechanism；The rack, including, bottom plate,
Side plate, back plate, top plate, the side plate, back plate bottom and top are connected and fixed with bottom plate and top plate respectively, between two blocks of side plates
It connects, be fixed with supporting plate, the fuel tank for storing hydraulic oil is equipped with below the supporting plate；Relaxation is fixed on the supporting plate
Mechanism for testing, disturbance generating mechanism；
The relaxation mechanism for testing, including, load cylinder, there are three the load cylinders and is arranged in add
It carries in three axial directions that shell is origin, the telescopic shaft of the load cylinder passes through connecting shaft component and load axis connection respectively；Institute
The loading axis stated enters in load shell across load shell to be compressed with sample outer surface.
The disturbance generating mechanism, including, the first vertical plate, third vertical plate, first vertical plate and third vertical plate bottom
Portion and supporting plate are connected and fixed and are fixed between first vertical plate and third vertical plate the second guide rod, second guiding
Bar passes through bogie；Driving lead screw passes through bogie, the first vertical plate and third vertical plate and can turn with the first vertical plate and third vertical plate
Dynamic assembly is assembled with bogie by threaded engagement, and the driving lead screw is defeated across third vertical plate one end and loading motor
Axis connection out；Secondary impact disc is contacted with impact disc to be held out against；
The impact disc is fixed on shock plate, and the shock plate and impact disc collectively form impact plate；
First guide rod passes through shock plate and both ends are connected and fixed with the first vertical plate and third vertical plate respectively, the impact
Plate can slide on the first guide rod；
The shock plate is equipped with one end face of impact disc backwards and is connected and fixed with impact guide rod one end, and the impact is led
It is cased with impact spring on bar and the impact guide rod other end is equipped with impact guide end, the impact guide end is straight
Diameter is greater than impact guiding shank diameter and the impact guide end is fitted into the guide cylinder of impact guide cylinder, the impact guiding
Bar is pierced by from limit bore；The position-limiting drum bore dia is less than guide cylinder diameter；Automatic load is provided on bogie
Mechanism；
The loading motor bottom is equipped with motor supporting plate, and the motor supporting plate is fixed on third vertical plate and for holding
Carry loading motor；Impacting shaft one end is equipped with all mounting heads, and the other end, which passes through the first vertical plate and passes through first vertical plate one end, is equipped with pair
Impact disc；The impacting shaft passes through connecting shaft component and load axis connection；
Block plate is provided on impacting shaft；Be also equipped with from left to right in the guide cylinder pressure sensor, hold out against plug,
Reset spring, the pressure sensor hold out against plug, reset spring and are successively adjacent to assembly.
As a further improvement of the present invention, the autoloading structure, including, motor, motor supporting plate are grabbed, it is described
Crawl motor crawl output shaft pass through motor supporting plate after be connected and fixed with total drive helical gear；
Total drive helical gear drives helical gear and grabs drive shaft one end with a point drive helical gear engaged transmission, described dividing
It is connected and fixed, the crawl drive shaft other end passes through axis bearing piece and rotatably assembles with axis bearing piece；
The axis bearing piece bottom is connected and fixed with supporting beam；It is fixed with cam in the crawl drive shaft, it is described
It contacts and holds out against at the top of cam and switch inserted block；The switch inserted block is fitted into the inner cylinder A621 of switch cylinder.
As a further improvement of the present invention, the connecting shaft component, the first connection including telescopic shaft end is arranged in
Head, connector sleeve, the second connector that loading axis end is set；
Connection inner cylinder is equipped in the connector sleeve, the connection inner cylinder includes big end cylinder and small end cylinder, and described stretches
Contracting axis passes through small end cylinder and the first connector is fitted into big end cylinder, and axial compressive force is equipped on the right side of first connector and is sensed
Device, second connector are equipped with wire through-hole, and the conducting wire of the axial compressive force sensor is pierced by from wire through-hole；Institute
The connection inner cylinder stated screws assembly by screw thread and the second connector.
As a further improvement of the present invention, supporting beam and cam corresponding position are provided with recessing groove；
The switch inserted block is equipped with spring mounting post equipped with inserted block body part, inserted block drive part, bottom, described
Inserted block drive part assembled with the driving guide groove that is arranged in inner cylinder；
The inserted block drive part have it is multiple, and between two inserted block drive parts be equipped with resigning gap, driving inclined-plane,
The angle that one is obtuse angle is formed between the driving inclined-plane and resigning gap；
The switch drum outer wall is equipped with guiding projection, and guiding board slot is constituted between two guiding projections, expansion ring
Ring part is fitted into guiding board slot and can sliding opposite with guiding board slot；
The open end of the ring part passes through switch cylinder and is connected and fixed with closed plate, and the ring part is close
It is fixed with detent protrusion on shock plate side, and is on the inside of the ring part convex equipped with detent at detent protrusion face
Column, the detent pillar pass through switch cylinder and enter driving guide groove；
When original state, the detent pillar and resigning gap are assembled, and at this point, the detent protrusion and shock plate
It is not overlapped on end face；
Screens spring is equipped on the inside of the closed plate between switch drum outer wall, the screens spring makes for generating
Thrust of the detent protrusion far from shock plate.
It as a further improvement of the present invention, further include spring catch, after the spring catch passes through closed plate, screens spring
It is connected and fixed with switch cylinder；
It is assembled at the top of the spring mounting post and support spring, the spring on the support spring bottom and capping is pacified
Column assembly is filled, the capping is fixed on switch cylinder bottom.
The beneficial effects of the present invention are:
1, disturbance generating mechanism of the invention can be realized the impact of the automation to impacting shaft, and can be passed according to pressure
Data, impact spring to length, the coefficient of elasticity of impact spring, the reduction length of secondary impact disc of sensor etc. are given to converse
The impact force of impacting shaft, this conversion can directly be calculated by computer, very convenient to use.
2, relaxation mechanism for testing of the invention can be realized effective clamping to sample, and can by its cover plate assembly
Realize the sealing to load shell, above-mentioned cover plate assembly uses gear, engaging screw rod and load shell and assembled, can either be realized
The quick assembling of cover board, and can guarantee effective fixed, assembly of cover plate assembly.
3, the present invention can be realized relaxation-disturbance Comprehensive Experiment, can than more accurately restore sample in underground
Real bearing state can provide effective reference for design, the construction in later period.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention.
Fig. 2 is a kind of structural schematic diagram of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention.
Fig. 3 is a kind of structural schematic diagram of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention.
Fig. 4 is that a kind of disturbance generating mechanism structure of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention is shown
It is intended to.
Fig. 5 is that a kind of disturbance generating mechanism structure of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention is shown
It is intended to.
Fig. 6 is that a kind of disturbance generating mechanism structure of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention is shown
It is intended to.
Fig. 7 is that a kind of disturbance generating mechanism structure of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention is shown
It is intended to.
Fig. 8 is that a kind of disturbance generating mechanism structure of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention is shown
It is intended to.
Fig. 9 is that a kind of disturbance generating mechanism structure of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention is shown
It is intended to.
Figure 10 is that a kind of disturbance generating mechanism structure of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention is shown
It is intended to.
Figure 11 is a kind of switch inserted block structural representation of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention
Figure.
Figure 12 is that a kind of relaxation mechanism for testing structure of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention is shown
It is intended to.
Figure 13 is a kind of connecting shaft modular construction signal of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention
Figure.
Figure 14 is that a kind of relaxation mechanism for testing structure of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention is shown
It is intended to.
Figure 15 is a kind of cover plate assembly structural representation of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention
Figure.
Figure 16 is a kind of cover plate assembly structural representation of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention
Figure.
Figure 17 is a kind of cover plate assembly structural representation of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention
Figure.
Figure 18 is a kind of cover plate assembly structural representation of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention
Figure.
Figure 19 is a kind of lifting assembly structural representation of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention
Figure.
Figure 20 is a kind of lifting assembly structural representation of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention
Figure.
Figure 21 is a kind of lifting assembly structural representation of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention
Figure.
Figure 22 is a kind of lifting assembly structural representation of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention
Figure.
Figure 23 is a kind of lifting pedestal structural representation of relaxation-disturbance comprehensive experimental device specific embodiment of the present invention
Figure.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples:
Referring to figures 1-3, a kind of relaxation-disturbance comprehensive experimental device, including rack, disturbance generating mechanism A, relaxation test
Mechanism；The rack, including, bottom plate 110, side plate 120, back plate 130, top plate 140, the side plate 120,130 bottom of back plate
Portion and top are connected and fixed with bottom plate 110 and top plate 140 respectively, are connected between two blocks of side plates 120, are fixed with supporting plate 150, described
Supporting plate 150 below be equipped with fuel tank 500 for storing hydraulic oil；
Loose mechanism for testing, disturbance generating mechanism A, the relaxation mechanism for testing, packet are fixed on the supporting plate 150
It includes, load cylinder 210, the load cylinder 210 can be three and be arranged in load shell 300 as three of origin
In axial direction (X, Y, Z), the telescopic shaft 211 of the load cylinder 210 is connect by connecting shaft component D with loading axis 220 respectively；
The loading axis 220 enters in load shell across load shell 300 to be compressed with 400 outer surface of sample；
Figure 11, the disturbance generating mechanism A are arrived referring to fig. 4, including, the first vertical plate A110, third vertical plate A130 are described
The first vertical plate A110 and the third bottom vertical plate A130 and supporting plate 150 are connected and fixed and the first vertical plate A110 and third are vertical
It is fixed with the second guide rod A210, the second guide rod A210 between plate A130 and passes through bogie A150 and the driving
Frame A150 can be in the second guide rod A210 axis upward sliding；
Drive lead screw A220 pass through bogie A150, the first vertical plate A110 and third vertical plate A130 and with the first vertical plate A110
It rotatably assembles with third vertical plate A130, assembled with bogie A150 by threaded engagement, the driving lead screw A220 is passed through
The output axis connection of 130 one end of third vertical plate and loading motor A510, the loading motor A510 can drive driving lead screw
A220 rotation；
Further, the bottom loading motor A510 is equipped with motor supporting plate A140, and the motor supporting plate A140 is solid
It is scheduled on third vertical plate A130 and for carrying loading motor A510.
230 one end of impacting shaft is equipped with all mounting heads 231, and the other end passes through the first vertical plate A110 and passes through the first vertical plate A110
One end is equipped with secondary impact disc A233；The impacting shaft 230 passes through connecting shaft component and load axis connection；
It is possible to further which block plate 232 is arranged on impacting shaft 230, in use, the block plate and the first vertical plate A110
It holds out against.This design can prevent impacting shaft 230 due to the pressure of load cylinder 210 and move inside generating mechanism to disturbing
It is dynamic, so that influencing experiment effect even damages disturbance generating mechanism.
The secondary impact disc A233 is contacted with impact disc A161 to be held out against, in use, the impact disc A161 and secondary punching
Disk A233 head-on collision is hit to generate impact force to impacting shaft 230；
The impact disc A161 is fixed on shock plate A162, the shock plate A162 and the common structure of impact disc A161
At impact plate A160；
First guide rod A230 passes through shock plate A162 and both ends connect with the first vertical plate A110 and third vertical plate A130 respectively
Fixation is connect, the shock plate A162 can be slided on the first guide rod A230；
The shock plate A162 is equipped with mono- end face impact disc A161 backwards and is connected and fixed with impact one end guide rod A410,
It is cased with impact spring A300 on the impact guide rod A410 and the impact guide rod A410 other end is equipped with impact
Guide end A411, the impact guide end A411 diameter are greater than impact guide rod A410 diameter and the impact guide end
A411 is fitted into the guide cylinder A421 of impact guide cylinder A420, and the impact guide rod A410 is worn from limit bore A422
Out；
The limit bore A422 diameter is less than guide cylinder A421 diameter；
Be also equipped with (subject to Fig. 7) from left to right in the guide cylinder A421 pressure sensor A920, hold out against plug A940,
Reset spring A930, the pressure sensor A920, it plug A940, reset spring A930 is held out against successively is adjacent to assembly；
In use, it is first that shock plate A162 is mobile to guide cylinder direction, so that impact spring A300 is stored elastic force, then directly
Release shock plate is connect, shock plate A162 is made to generate impact to secondary impact disc A232 by impact disc A161.
Further, in order to realize the automation of this equipment, autoloading structure, institute can be set on bogie A150
The autoloading structure stated, including, crawl motor A520, motor supporting plate A151, the crawl output of the crawl motor A520
Axis A521 is connected and fixed after passing through motor supporting plate A151 with total helical gear A911 that drives；
Total drive helical gear A911 drives helical gear A912 and grabs with a point drive helical gear A912 engaged transmission, described dividing
The one end drive shaft A240 is taken to be connected and fixed, the crawl drive shaft other end passes through axis bearing piece A152 and can with axis bearing piece A152
Rolling assembling；
The axis bottom bearing piece A152 is connected and fixed with support beam A 153；
It is fixed on the crawl drive shaft A240 at the top of cam A250, the cam A250 and switch inserted block A800
Contact is held out against；
The switch inserted block A800 is fitted into the inner cylinder A621 of switch cylinder A600.
Further, the rotation of cam A250 is interfered in order to prevent, can be in support beam A 153 and cam corresponding position
Recessing groove A1531 is set.
The switch inserted block A800 is equipped with inserted block body part A801, inserted block drive part A802, bottom equipped with bullet
Spring mounting post A804, the inserted block drive part A802 are assembled with the driving guide groove A622 being arranged in inner cylinder A621；
The inserted block drive part A802 have it is multiple, and between two inserted block drive part A802 be equipped with resigning gap
A8022, driving inclined-plane A8021 form the folder that one is obtuse angle between the driving inclined-plane A8021 and resigning gap A8022
Angle；
The switch cylinder A600 outer wall is equipped with guiding projection A601, constitutes guide plate between two guiding projection A601
The ring part A720 of slot A610, expansion ring A700 are fitted into guiding board slot A610 and can slidings opposite with guiding board slot A610；
The open end of the ring part A720 passes through switch cylinder A600 and is connected and fixed with closed plate A730, described
Ring part A720 is fixed with detent protrusion A770 on the side shock plate A162, and the inside ring part A720 exists
Detent pillar A740 is equipped at detent protrusion A770 face, the detent pillar A740 passes through switch cylinder A600 and enters driving
Guide groove A622；
When original state, the detent pillar A740 and resigning gap A8022 are assembled, and at this point, the detent is convex
It is not be overlapped on end face with shock plate A162 to play A770.
Screens spring A750, the detent bullet are equipped between switch cylinder A600 outer wall on the inside of the closed plate A730
Spring A750 is for generating the thrust for making detent protrusion A770 far from shock plate A162.
Further, more firm in order to be mounted so as to screens spring A750, spring catch A710, the spring can be set
Pin A710 is connected and fixed after passing through closed plate A730, screens spring A750 with switch cylinder A600.
It is assembled at the top of the spring mounting post A804 and support spring A820, the bottom support spring A820 and envelope
The spring mounting post A831 assembly on A830 is covered, the capping A830 is fixed on the switch bottom cylinder A600.
In use, driving bogie A150 by loading motor A510 first, make detent protrusion A770 in past load shell 300
It is more than shock plate A162 on direction；Then crawl motor 520 rotates, and band moving cam A250 will switch inserted block A800 pushing, herein
In the process, detent pillar A740 can cooperate with driving inclined-plane A8021, and keep detent raised under driving inclined-plane A8021 driving
A770 is axially upper Chong Die with shock plate A162 in impacting shaft；Last loading motor A510 rotation, makes bogie A150 compression shock
Spring A300 reaches default value until the pressure sensor A920 pressure tested；Then rotate backward crawl motor A520,
Cam loosens the compression to switch inserted block A800 in the process, and the switch inserted block A800 can be in the work of support spring A820
With lower reset, in reseting procedure, the detent pillar A740 can be again introduced into resigning gap, detent protrusion A770 no longer
(shock plate release) Chong Die with shock plate, shock plate are moved to impacting shaft 230 until to impacting shaft under the action of impact spring
230 generate impact.
This structure can be realized the impact of the automation to impacting shaft, and can be according to the data of pressure sensor, punching
Spring is hit to length, the coefficient of elasticity of impact spring, the reduction length of secondary impact disc etc. to converse the impact for giving impacting shaft
Power, this conversion can directly be calculated by computer, very convenient to use.
Referring to Figure 12-Figure 23, the relaxation mechanism for testing, including, load cylinder 210, load shell 300, loading axis
220, cover plate assembly B, lifting assembly C；
LOADED CAVITY 301 is equipped in the load shell 300, the loading axis 220 passes through load shell 300 and enters LOADED CAVITY
In 301, rock sample 400 is installed in the LOADED CAVITY；
300 open end of load shell is equipped with engaging screw rod 310, and the engaging screw rod 310 is packed into cover board group
Cover plate assembly B and load shell 300 are assembled in the connecting hole B210 of part B；
The cover plate assembly B, including, it is oriented to lantern ring B100, the inside of the guiding lantern ring B100 is equipped in guiding
Cylinder B101, the inner wall of the guiding inner cylinder B101 are equipped with half slot B1011 of guiding；
Guiding raised line B201 on the half slot B1011 of guiding and cover board shell B200 outer wall is assembled, the cover board shell
It is equipped with installation cavity B202 in B200, main sliding tooth B410, driven small tooth B420 are installed in the installation cavity B202, it is described
Main sliding tooth B410 and driven small tooth B420 are intermeshed and form gear transmission structure；
The driven small tooth B420 is equipped with assembly screw hole B421, and the assembly screw hole B421 and connecting hole B210 are same
Axis and the assembly screw hole B421 are assembled with engaging screw rod 310 and pass through threaded engagement；
The installation cavity B202 is sealed by shrouding disc B300, and the shrouding disc B300 is equipped with shrouding disc through-hole B301,
The shrouding disc through-hole B301 and assembly screw hole B421 are coaxial；
The two sides main sliding tooth B410 are equipped with installation base B411, wherein the installation close to the side shrouding disc B300 is convex
Platform is equipped with hexagonal and column B412, the hexagonal driving column B412 is driven to be fitted into the driving through-hole B302 of shrouding disc B300, use
When, main sliding tooth is driven by allen wrench after can engaging, assemble with hexagonal driving column B412 using allen wrench
B410 rotation；
Bearing mounting ring B310, the bearing installation are equipped on the inside of the installation cavity B202, on the inside of shrouding disc B300
Ring B310 and the assembly of the outer ring base bearing B512 are fixed, and the base bearing B512 inner ring and installation base B411 assembly are fixed；
A thrust ball bearing B511, the thrust ball bearing are respectively equipped in the driven small tooth B420 both ends of the surface
Mono- blowout patche of B511 is fixed with the driven end face small tooth B420, another is solid with side compression in the inside installation cavity B202 or shrouding disc B300
It is fixed；
The thrust ball bearing B511 and driven small tooth B420 are coaxial.
By the use of base bearing B512 and thrust ball bearing B511, main sliding tooth B410, driven on the one hand can reduce
Frictional force on the inside of small tooth B420 and installation cavity B202 and on the inside of shrouding disc B300, another aspect also can to main sliding tooth B410,
Driven small tooth B420 plays the role of assembly, fixation.
Further, open end 0-0.5cm sections of the engaging screw rod 310 can be not provided with screw thread and diameter is slightly less than card
It closes screw rod 310 and threaded part is set.This structure can play the role of guiding, cover plate assembly B with engage screw rod 310
When assembly, the effect that early period, guiding was packed into is played in the open end of the engaging not set screw thread of screw rod 310.
In use, the driven small tooth B420 of main sliding tooth B410 driving is rotated, the assembly spiral shell in driven small tooth B420
Hole B421 passes through threaded engagement with screw rod 310 is engaged, and finally fixes cover plate assembly and the load assembly of shell 300；In use process
Described in cover board shell B200 can guiding inner cylinder B101 in slide.
The cover board shell B200 is additionally provided with sealing block B600, the sealing block B600 on load 300 side of shell
Secondary loading axis 240, the secondary loading axis 240 and the load with its face are fixed on the end face of load 300 one end of shell
Axis 220 is coaxial；
In use, by loading axis 220 in three axial directions and secondary loading axis 240 and 400 outer surface of sample hold out against with
Fixed sample 400.Amesdial can be set in loading axis 220 to detect the length that each loading axis 220 is packed into load shell,
To calculate sample whether in preset center, if can not be adjusted by adding gasket in center.
The guiding bottom lantern ring B100 is connected and fixed by connecting plate B110 with batten B120 is connect, the connection
The bottom batten B120 is fixed with lifting hinged, described at the top of hinged block B130, the hinged block B130 and lifter plate C100
Plate C100 has two pieces and two pieces of lifter plate C100 to intersect and hinged in infall, and the bottom lifter plate C100 is respectively with first
Slide-bar C111 or the second slide-bar C112 are connected and fixed；
Referring to Figure 13, the connecting shaft component D, the first connector D212, connection including 211 end of telescopic shaft is arranged in
Set D100, the second connector 221 that 220 end of loading axis is set；
Be equipped in the connector sleeve D100 connection inner cylinder D110, the connection inner cylinder D110 include big end cylinder D111 and
Small end cylinder D112, the telescopic shaft 211 passes through small end cylinder D112 and the first connector D212 is fitted into big end cylinder D111, described
The first connector on the right side of be equipped with axial compressive force sensor D200, second connector 221 be equipped with wire through-hole 222,
The conducting wire of the axial compressive force sensor D200 is pierced by from wire through-hole；
The connection inner cylinder D110 screws assembly by screw thread and the second connector 221.
When needing to dismantle loading axis and telescopic shaft, directly rotation connection set D100 makes connector sleeve and the second connector 221
Disengaging.
In use, this structure detects the pressure applied in each axial direction to sample by axial compressive force sensor, in addition, described
Impacting shaft and loading axis be also that the stress of its axial compressive force sensor when being disturbed, can be passed through by connecting shaft component D
The true dynamics for applying disturbance is extrapolated in variation, so that test is more accurate.
Referring to Figure 19-Figure 23, the lifting assembly C, including lifter plate C100, the first slide-bar C111 and the second slide-bar
C112, lifting pedestal C400, the first slide-bar C111, the second slide-bar C112 are respectively charged into setting in lifting guide plate C300
Lifting guide groove C301 in, the first described one end slide-bar C111 is connect with lifting motor C200, and can pass through lifting motor
C200 drives its rotation；
First both ends slide-bar C111, which are pierced by lifting guide groove C301 and extension end, is separately installed with lifting drive
Movable tooth C210, the lifting sliding tooth C210 are engaged with the lifting pinion rack C220 being fixed on lifting supporting plate C310 and shape
At rack pinion structure；
The lifting bottom guide plate C300 is connected and fixed with lifting supporting plate C310；
The bottom lifting supporting plate C310 is equipped with lifting guide runner C311, and the lifting guide runner C311 is packed into
It is arranged in the lifting guide chute C401 on lifting pedestal C400；
The first limit plate C410 and the second limit plate C420, first limit are additionally provided on the lifting pedestal C400
Position plate C410 is used to limit the position of lifting supporting plate C310, prevents lifting supporting plate C310 from being provided with first one end limit plate C410
Skid off lifting pedestal C400；
The second limit plate C420 is being equipped with hinged groove C402 with the lifting corresponding position guide chute C401.
Further, hinged, the described movable support rod in the one end the lifting supporting plate C310 and movable support rod C500
The C500 other end is hinged at pedal C620, and the pedal C620 is equipped with pedal hinged block C630 and treadle supporting block
C610, the pedal hinged block C630 are fitted into hinged groove C402 and by pedal articulated shaft C700 and the second limit plate C420
Hingedly；
The treadle supporting block C610 is used for pedal C620, keeps pedal C620 parallel with lifting pedestal C400.
In use, being that user tramples by pedal C620, to be user-friendly for operating, such as sample is clamped；
When lifting supporting plate C310 is mobile to the second limit plate C420, the movable support rod C500 can be to pedal
C620, which provides a steering power, is rotated up pedal.And in lifting supporting plate C310 reverse movement, the pedal is again extensive
Restore position.
When needing to take out sample, cover plate assembly B is disassembled from load shell 300 first, lifting motor is then driven, makes
Lifting motor driving lifting sliding tooth C210 is mobile to the lifting end guide plate C300, during this, cover plate assembly can gradually under
Drop, until reaching extreme lower position, then user tramples carries out disassembling section on pedal.
It can be realized the lifting of cover plate assembly by lifting assembly, to prevent cover plate assembly from influencing operation and can also keep away
Exempt from the operation that user lifted or put down cover plate assembly with hand, saves the physical strength of user.
Usage mode and external connection apparatus of the invention is referred to the middle promulgated by the State Council of 104181029 A of Publication No. CN
Bright patent, since usage mode is similar, this case is just repeated no more.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be within the scope of protection determined by the claims.
Claims (6)
1. a kind of rock relaxation mechanism for testing, including, load cylinder, load shell, loading axis, cover plate assembly, lifting assembly；It is described
Load shell in be equipped with LOADED CAVITY, the loading axis pass through load shell enter in LOADED CAVITY, be equipped in the LOADED CAVITY
Rock sample；It is characterized in that:
The load shell opener end face is equipped with engaging screw rod, and the engaging screw rod is fitted into the connecting hole of cover plate assembly will
Cover plate assembly and load shell assembly；
The cover plate assembly, including, it is oriented to lantern ring, the inside of the guiding lantern ring is equipped with guiding inner cylinder, the guiding
The inner wall of inner cylinder is equipped with half slot of guiding；
Guiding raised line on half slot of guiding and cover board shell outer wall assembles, and installation cavity is equipped in the cover board shell, described
Installation cavity in main sliding tooth, driven small tooth be installed, the main sliding tooth and driven small tooth are intermeshed and form gear
Drive mechanism；
The driven small tooth be equipped with assembly screw hole, the assembly screw hole assembly screw hole coaxial and described with connecting hole and
Engage screw rod to assemble by threaded engagement；
The installation cavity is sealed by shrouding disc, and the shrouding disc is equipped with shrouding disc through-hole, the shrouding disc through-hole and assembly
Screw hole is coaxial；
The main sliding tooth two sides are equipped with installation base, wherein the installation base close to shrouding disc side drives equipped with hexagonal
Column, the hexagonal driving column are fitted into the driving through-hole of shrouding disc；
Bearing mounting ring is equipped on the inside of the installation cavity, on the inside of shrouding disc, the bearing mounting ring and main shaft bearing outer-ring fill
With fixation, the base bearing inner ring and installation base assembly are fixed；
Be respectively equipped with a thrust ball bearing in the driven small tooth both ends of the surface, described one blowout patche of thrust ball bearing with from
It moves small increment face to fix, another is fixed on the inside of installation cavity or on the inside of shrouding disc；The thrust ball bearing with it is driven small
Tooth is coaxial.
2. rock relaxation mechanism for testing as described in claim 1, it is characterized in that: the engaging screw rod open end 0-0.5cm
Section is not provided with screw thread and diameter is slightly less than engaging screw rod and threaded part is arranged.
3. rock relaxation mechanism for testing as described in claim 1, it is characterized in that: the cover board shell is on load shell side
It is additionally provided with sealing block, the sealing block is fixed with secondary loading axis, the secondary loading axis on the end face of load shell one end
With it is coaxial with the loading axis of its face；
The guiding collar footprint is connected and fixed by connecting plate with batten is connect, and the connection strap board bottom portion fixation is hinged
Block is connect, the hinged block and lifter plate top are hinged, and the lifter plate there are two pieces and two pieces of lifter plates intersect and intersecting
Place is hinged, and the lifter plate bottom is connected and fixed with the first slide-bar or the second slide-bar respectively.
4. rock as described in claim 1 relaxation mechanism for testing, it is characterized in that: the lifting assembly, including lifter plate, the
One slide-bar and the second slide-bar, lifting pedestal, first slide-bar, the second slide-bar are respectively charged into the liter that lifting guide plate is arranged in
It drops in guide groove, the first described slide-bar one end is connect with lifting motor, and its rotation can be driven by lifting motor；
The first slide-bar both ends are pierced by lifting guide groove and extension end and are separately installed with lifting sliding tooth, the liter
Drop sliding tooth engages with the lifting pinion rack being fixed in lifting supporting plate and forms rack pinion structure；The lifting
Guide plate bottom is connected and fixed with lifting supporting plate；
The lifting supporting plate bottom is equipped with lifting guide runner, and the lifting guide runner, which is packed into, to be arranged on lifting pedestal
Lifting guide chute in；
The first limit plate and the second limit plate are additionally provided on the lifting pedestal, first limit plate is for limiting lifting
The position of supporting plate prevents lifting supporting plate from skidding off lifting pedestal from first limit plate one end is provided with；
Second limit plate is being equipped with hinged groove with lifting guide chute corresponding position；
The lifting supporting plate and movable support rod one end are hinged, and the movable support rod other end is hinged at pedal,
The pedal is equipped with pedal hinged block and treadle supporting block, and the pedal hinged block is fitted into hinged groove and passes through pedal
Articulated shaft and the second limit plate are hinged；
The treadle supporting block is used to support pedal, keeps pedal parallel with lifting pedestal.
5. a kind of relaxation-disturbance comprehensive experimental device, it is characterized in that: requiring the described in any item Lycopodium chinense Christs of 1-4 using having the right
Relaxation mechanism for testing.
6. relaxation-disturbance comprehensive experimental device as claimed in claim 5, it is characterized in that: further including rack, disturbance generation machine
Structure；The rack, including, bottom plate, side plate, back plate, top plate, the side plate, back plate bottom and top respectively with bottom plate and
Top plate is connected and fixed, and is connected between two blocks of side plates, is fixed with supporting plate, the oil for storing hydraulic oil is equipped with below the supporting plate
Case；Loose mechanism for testing, disturbance generating mechanism are fixed on the supporting plate；
The relaxation mechanism for testing, including, load cylinder, there are three the load cylinders and is arranged in load shell
For in three axial directions of origin, the telescopic shaft of the load cylinder passes through connecting shaft component and load axis connection respectively；Described
Loading axis enters in load shell across load shell to be compressed with sample outer surface；
The disturbance generating mechanism, including, the first vertical plate, third vertical plate, first vertical plate and third vertical plate bottom with
Supporting plate is connected and fixed and is fixed with the second guide rod between first vertical plate and third vertical plate, and second guide rod is worn
It overdrives frame；Driving lead screw passes through bogie, the first vertical plate and third vertical plate and rotatably fills with the first vertical plate and third vertical plate
Match, assembled with bogie by threaded engagement, the driving lead screw passes through the output shaft of third vertical plate one end and loading motor
Connection；Secondary impact disc is contacted with impact disc to be held out against；
The impact disc is fixed on shock plate, and the shock plate and impact disc collectively form impact plate；
First guide rod passes through shock plate and both ends are connected and fixed with the first vertical plate and third vertical plate respectively, the shock plate energy
It is enough to be slided on the first guide rod；
The shock plate is equipped with one end face of impact disc backwards and is connected and fixed with impact guide rod one end, the impact guide rod
On be cased with impact spring and the impact guide rod other end is equipped with impact guide end, the impact guide end diameter is big
In impact guiding shank diameter and the impact guide end is fitted into the guide cylinder for impacting guide cylinder, the impact guide rod from
It is pierced by limit bore；The position-limiting drum bore dia is less than guide cylinder diameter；Autoloading structure is provided on bogie；
The loading motor bottom is equipped with motor supporting plate, and the motor supporting plate is fixed on third vertical plate and adds for carrying
Carry motor；Impacting shaft one end is equipped with all mounting heads, and the other end, which passes through the first vertical plate and passes through first vertical plate one end, is equipped with secondary impact
Disk；The impacting shaft passes through connecting shaft component and load axis connection；
Block plate is provided on impacting shaft；Pressure sensor is also equipped in the guide cylinder from left to right, plug is held out against, resets
Spring, the pressure sensor hold out against plug, reset spring and are successively adjacent to assembly；
The autoloading structure, including, motor, motor supporting plate are grabbed, the crawl output shaft of the crawl motor passes through
It is connected and fixed after motor supporting plate with total helical gear that drives；
Total drive helical gear drives helical gear and connect with crawl drive shaft one end with a point drive helical gear engaged transmission, described dividing
Fixed, the crawl drive shaft other end passes through axis bearing piece and rotatably assembles with axis bearing piece；
The axis bearing piece bottom is connected and fixed with supporting beam；Cam, the cam are fixed in the crawl drive shaft
It is held out against with being contacted at the top of switch inserted block；The switch inserted block is fitted into the inner cylinder of switch cylinder；
The connecting shaft component, including the first connector of telescopic shaft end is arranged in, connector sleeve, loading axis end is arranged in
Second connector；
Connection inner cylinder is equipped in the connector sleeve, the connection inner cylinder includes big end cylinder and small end cylinder, the telescopic shaft
Across small end cylinder and the first connector is fitted into big end cylinder, and axial compressive force sensor, institute are equipped on the right side of first connector
The second connector stated is equipped with wire through-hole, and the conducting wire of the axial compressive force sensor is pierced by from wire through-hole；Described
It connects inner cylinder and assembly is screwed by screw thread and the second connector；Supporting beam and cam corresponding position are provided with recessing groove；
The switch inserted block is equipped with inserted block body part, inserted block drive part, bottom equipped with spring mounting post, and described inserts
Block drive part is assembled with the driving guide groove being arranged in inner cylinder；
The inserted block drive part have it is multiple, and between two inserted block drive parts be equipped with resigning gap, driving inclined-plane, it is described
Driving inclined-plane and resigning gap between formed one be obtuse angle angle；
The switch drum outer wall is equipped with guiding projection, and guiding board slot, the ring body of expansion ring are constituted between two guiding projections
It is partially loaded in guiding board slot and opposite with guiding board slot can slide；
The open end of the ring part passes through switch cylinder and is connected and fixed with closed plate, and the ring part is close to impact
It is fixed with detent protrusion on plate side, and is to be equipped with detent pillar, institute at detent protrusion face on the inside of the ring part
The detent pillar stated passes through switch cylinder and enters driving guide groove；
When original state, the detent pillar and resigning gap are assembled, and at this point, the detent protrusion and shock plate are being held
It is not overlapped on face；
Screens spring is equipped on the inside of the closed plate between switch drum outer wall, the screens spring makes detent for generating
Thrust of the protrusion far from shock plate；
It further include spring catch, the spring catch is connected and fixed after passing through closed plate, screens spring with switch cylinder；
It is assembled at the top of the spring mounting post and support spring, the spring mounting post on the support spring bottom and capping
Assembly, the capping are fixed on switch cylinder bottom.
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| CN201710636513.5A CN107290208B (en) | 2017-07-31 | 2017-07-31 | A kind of rock relaxation mechanism for testing and its experimental rig |
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| CN108240941B (en) * | 2018-03-06 | 2020-03-10 | 安徽理工大学 | Experimental device for be used for testing rock disturbance-relaxation effect |
| CN108444830B (en) * | 2018-03-06 | 2020-04-03 | 安徽理工大学 | Loading assembly and experimental device for testing rock disturbance-relaxation |
| CN108489800B (en) * | 2018-03-06 | 2020-06-09 | 安徽理工大学 | Pressure applying assembly and experimental device for testing elastic after-effect of rock |
| CN108562506A (en) * | 2018-03-08 | 2018-09-21 | 西南交通大学 | High frequency in situ imaging fatigue tester |
| CN111650015B (en) * | 2020-04-26 | 2021-07-13 | 成都理工大学 | Automatic frequency modulation soil sample disturbance test device |
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| CN102507336B (en) * | 2011-11-11 | 2013-07-31 | 北京交通大学 | Rotatable power and liquid supply ground triaxial testing machine |
| CN102621005B (en) * | 2012-03-30 | 2014-04-02 | 中国矿业大学(北京) | Rock soil rheological test equipment |
| CN103076233B (en) * | 2012-12-31 | 2014-12-10 | 安徽理工大学 | Triaxial rheological tester |
| CN104181029B (en) * | 2014-07-22 | 2017-03-08 | 东北大学 | Assay device and method that under strain rate disturbance in a kind of pendulum loading, rock relaxes |
| CN104374655B (en) * | 2014-11-30 | 2016-08-31 | 湖南科技大学 | A kind of shock vibration country rock testing equipment |
| CN104677726B (en) * | 2015-02-09 | 2017-05-31 | 四川大学 | The spacing tension and compression cyclic test rock sample fixing device of scroll chuck |
| CN106761730B (en) * | 2016-12-20 | 2019-08-06 | 安徽理工大学 | A kind of fast demountable clamps component and its confining pressure experimental provision |
| CN107221236B (en) * | 2017-07-31 | 2019-05-17 | 安徽理工大学 | A kind of rock disturbance generating mechanism and its relaxation-disturbance comprehensive experimental device |
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