CN108426786A - A kind of shear box suitable for vertical ring shear test - Google Patents
A kind of shear box suitable for vertical ring shear test Download PDFInfo
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- CN108426786A CN108426786A CN201810234303.8A CN201810234303A CN108426786A CN 108426786 A CN108426786 A CN 108426786A CN 201810234303 A CN201810234303 A CN 201810234303A CN 108426786 A CN108426786 A CN 108426786A
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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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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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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Abstract
The invention discloses a kind of shear boxs suitable for vertical ring shear test, including bottom plate, outer cover and head cover, the bottom plate includes the Outer Bottom Plating and inner bottom plating being slidably installed together, the inner bottom plating is fixed, hoop rotation can occur for the Outer Bottom Plating, the inner bottom plating is equipped with soil sample fixed blade, the Outer Bottom Plating is equipped with shear plate, the lower end of the Outer Bottom Plating and outer cover is fixed together, vertical guide is equipped in the outer cover, the position of the vertical guide and shear plate is staggered, the head cover includes outer head cover and the internal head cover being slidably installed together, the outer wall of the outer head cover is equipped with vertical guide groove compatible with vertical guide, the bottom of the outer head cover is equipped with shearing board slot compatible with shear plate.Shear history of the Rock And Soil under vertical annular shear action can be achieved in the present invention, ensures to cut displacement at shear surface and shearing stress distribution is uniform, can take into account two kinds of functions of sample preparation and experiment, provide shearing force using stepless speed-change motor, improve test accuracy.
Description
Technical field
The present invention relates to soil test equipment technical field more particularly to a kind of cutting suitable for vertical ring shear test
Cut box.
Background technology
The shearing strength characteristic for studying the soil body, the mechanical mechanism that Analysis of Slope Stability, geological disaster occur are studied
And its side slope progressive destruction process study etc. is of great significance.
The shearing strength characteristic of Rock And Soil can generally be obtained by test in situ or laboratory soil test, shearing examination in situ
It is big to test size, since Rock And Soil is to be undisturbed sample, obtained experimental result is closest with engineering practice, but shearing in situ
Experiment has the shortcomings that of high cost, the period is long, instrument is heavy.In contrast to this, although the representativeness of laboratory test soil sample is poor,
It is more to be widely used in the research of the shearing strength characteristic of the soil body since its is at low cost, the period is short, lower-price characteristic
In.
Currently, commonly the device of measurement soil shear strength is along fixed shear surface, in the effect of different normal force
Under measure several shearing strength values.During actual shearing, the shear surface of sample persistently reduces, and the direct stress on shear surface
It is unevenly distributed, cannot reflect stress state residing for true Rock And Soil.In addition, direct shear test and triaxial shear test by
The limitation of instrument, shear displacemant have limitation, cannot be satisfied and resist to the soil body under the conditions of the big displacements such as high-speed shadowgraph technique
Cut the numerical evaluation of intensity and residual strength.Therefore, it is necessary to develop the special soils that can realize big shear displacemant experimental condition
Construction equipment and corresponding experimental technique, wherein ring shear apparatus are to disclosure satisfy that one of the most effective means of both requirements.
However there is an inherent shortcoming in existing ring shear apparatus：Since shear surface is an annulus, and deposit radially
In one fixed width, therefore the cutter shearing line speed on shear surface radially will be caused to be distributed inconsistent, the shearing position in same time
Move inconsistent, this will all make shear stress in shear history and cuts displacement being unevenly distributed on shear surface, so that cutting
Cut through Cheng Buneng reduction actual conditions.
In order to solve problem above, a kind of ring shear test instrument suitable for vertical shearing face is suggested.However, public at present
Shear box in the vertical shearing face ring shear apparatus opened there are problems, such as the torque application device course of work are excessively cumbersome,
And the shear rate for testing process can not be controlled, it is reduced so as to cause the precision for being applied to soil body sample up cut shear,
Influence the accuracy of test result；Sample preparation additionally needs special equipment；It needs to be inserted in again after removing sample preparation backplate after the completion of sample preparation
In shear box, therefore more loose native stone body can not be tested using the ring shear apparatus.
Invention content
In view of this, the embodiment provides a kind of and sample preparations with experiment, and by novel connection and
A kind of shear box suitable for vertical ring shear test that the kind of drive is tested is, it can be achieved that ring to Rock And Soil vertical shearing face
Scissor test, and can realize and shear rate is accurately controlled, improve the stability of vertical ring shear test.Cooperation correlative link is cut
Tester is, it can be achieved that Rock And Soil under the conditions of different normal pressures, confining pressure and under different shear rate in big shear displacemant condition
Under peak shear strength, residual strength and strain softening process research, filled up vertical shearing face ring scissor test instrument field
Blank.
The embodiment of the present invention provides a kind of shear box suitable for vertical ring shear test, including bottom plate, outer cover, head cover and
Head cover hold-down bars, the bottom plate include the Outer Bottom Plating and inner bottom plating being slidably installed together, and the inner bottom plating is fixed, described
Hoop rotation can occur for Outer Bottom Plating, and the inner bottom plating is equipped with soil sample fixed blade, and the Outer Bottom Plating is equipped with shear plate, described
The lower end of Outer Bottom Plating and outer cover is fixed together, and vertical guide, the position of the vertical guide and shear plate are equipped in the outer cover
Set and be staggered, the head cover includes outer head cover and the internal head cover being slidably installed together, the outer wall of the outer head cover be equipped with it is vertical
The bottom of the compatible vertical guide groove of guide rail, the outer head cover is equipped with shearing board slot compatible with shear plate, will wait for shearing examination
Sample is put into shear box, and the head cover is inserted into outer cover, vertical guide groove on the outer head cover and shearing board slot respectively with erect
Direction guiding rail and shear plate are stuck, and then Outer Bottom Plating, outer cover and outer head cover is made to form external circumferential turning cell, the inner bottom plating
Internal stationary room is formed with internal head cover, the internal head cover is internally provided with interior conducting bar.
Further, the Outer Bottom Plating includes outside plate and outer extension plate, and the outer extension plate is located at the inside of outside plate, and one
Molding, the inner bottom plating include inner panel and interior extension plate, and the interior extension plate is located at the outside of inner panel, and is integrally formed, described
Interior extension plate and outer extension plate are oppositely arranged, and guide groove is provided on the inside of the interior extension plate, and the inside of the outer extension plate is equipped with
Conducting bar compatible with guide groove, the conducting bar can slide in guide groove, and then make Outer Bottom Plating that circumferential turn occur relative to inner bottom plating
It is dynamic.
Further, the length of the interior extension plate cross section and the length of outer extension plate cross section are consistent, the inner panel
The width of cross section and the width of outside plate cross section are consistent, and bed course is equipped at the gap of the Outer Bottom Plating and inner bottom plating, described
Bed course can reduce the frictional force that Outer Bottom Plating is generated along inner bottom plating sliding.
Further, the internal head cover includes inner cover plate and extension plate, and the extension plate is located at the outside of inner cover plate, and with it is interior
Cover board is integrally formed, and the lower section of the extension plate is equipped with the sliding slot being recessed inwardly, and the outer head cover is located at the lower section of extension plate, and
The top of outer head cover is equipped with draw runner compatible with sliding slot, and the draw runner can slide in sliding slot, so make outer head cover relative to
Hoop rotation occurs for internal head cover.
Further, the length of the outer head cover cross section is consistent with the length of extension plate cross section, and the outer head cover is horizontal
The width in section and the sum of the width of extension plate cross section are consistent with the width of inner cover plate cross section, the outer head cover and interior top
Bed course is equipped at the gap of lid, the bed course can reduce the frictional force that outer head cover is generated along internal head cover sliding.
Further, the top of the internal head cover is provided with horizontal bubble instrument, is provided on the Inner bottom plates and circumferentially divides everywhere
The discharge outlet of cloth is provided with downwards rhone along discharge outlet, drainpipe is laid in the rhone, one layer is equipped at the discharge outlet
Filter screen, the discharge outlet are equipped with a sealing cover, and the sealing cover can be rotated, and then realize the opening of discharge outlet and close
Envelope, for realizing draining shear history and undrained shear process.
Further, the inner bottom plating is realized fixed by being fixed on a pedestal, and the centre of the pedestal has one convex
The cylindrical cushion cap risen, the inner bottom plating are bolted on cylindrical cushion cap.
Further, the head cover hold-down bars includes barred body, support plate, hold-down bars plush copper, and the hold-down bars plush copper is fixed on
In groove in the middle part of cylindrical cushion cap, support plate side surrounding is uniformly arranged there are four support plate guide groove, with the outer cover
Interior vertical guide matches, and the stick end of the barred body is provided with stick end guide groove, with the interior conducting bar phase being arranged in the internal head cover
Matching, the guide groove and hold-down bars plush copper are used for when instrument is not used for fixing barred body, the support plate to described
Head cover provides support.
Further, the hoop rotation of the Outer Bottom Plating includes by shearing dynamical system driving, the shearing dynamical system
It shears in the middle part of hollow gear wheel, driver pinion, stepless speed-change motor, frequency converter, gear wheel end support bearing and gear wheel
Bearing is connected, the frequency converter is fixed on the base, and the frequency converter connects stepless speed-change motor, the electrodeless variable-speed motor
Driver pinion is connected on active rotating shaft, the driver pinion is engaged with hollow gear wheel is sheared, and drives shearing hollow big
Gear rotates, and the Outer Bottom Plating is fixed on the hollow gear wheel of shearing, and the rotation of the hollow gear wheel of shearing drives Outer Bottom Plating
Rotation, the hollow gear wheel of the shearing is located on the surrounding of cylindrical cushion cap, and the hollow gear wheel of shearing is held with cylinder
It is provided between platform in the middle part of gear wheel and connects bearing, the lower part of the hollow gear wheel of shearing passes through gear wheel end support bearing
It is connected with pedestal, ensures that the stabilization for shearing hollow gear wheel is freely rotated, the frequency converter can be to the defeated of stepless speed-change motor
Go out rotating speed and carry out stable regulation, and then realizes the shear history under different shear rate.
Compared with prior art, the invention has the advantages that：
1, shear box provided by the present invention can generate vertical cricoid shear surface, i.e. shear surface in shear history
Perpendicular to horizontal plane, enable to the shear displacemant in shear history on shear surface equal with shear velocity, ensure shear stress with
Shear displacemant being uniformly distributed on shear surface, makes test result be more nearly actual conditions.
2, shear box provided by the present invention is compared with existing disclosed vertical shearing face ring shear apparatus shear box, inside and outside shearing
Box uses Novel connection type, can prevent the soil body from being leaked out in shear history, and can effectively reduce inside and outside shear box
The friction generated is relatively rotated, frictional heat is reduced, reduces energy consumption of electrical machinery, ensures the stabilization hoop rotation of external circumferential fluid shear chamber
And internal motionless room is opposing stationary, improves the operation stability of testing equipment.
3, for shear box provided by the present invention compared with existing disclosed vertical shearing face ring shear apparatus shear box, use is electrodeless
Variable speed electric motors, particularly and frequency converter input shear box into action edge, can realize and be accurately controlled to shear rate, improve experiment
Precision.
4, shear box provided by the present invention compared with existing disclosed vertical shearing face ring shear apparatus shear box, take into account sample preparation
With two kinds of functions of experiment, it is not necessarily to additional sample making apparatus, operating process is more convenient, and can be to the soil of various loosening degrees
Body carries out ring shear test, expands the scope of application of existing vertical ring shear apparatus.
5, shear box provided by the present invention is reserved with normal direction pressue device installation space and axial confining pressure pressue device peace
Bolt hole is filled, can be used cooperatively from mating ring shear test instrument, it can be achieved that under the conditions of different normal pressures, confining pressure and different shearing
The research of peak shear strength, residual strength and strain softening process of the Rock And Soil under the conditions of big shear displacemant, is filled out under rate
The blank in vertical shearing face ring scissor test instrument field is mended.
6. shear box main part provided by the present invention is attached using bolt with remaining device, easy to operate, just
In dismounting, the instrument that axis pressure can be provided with uniaxial compression test instrument etc. is used cooperatively, and the scope of application is wider.
Description of the drawings
Fig. 1 is an a kind of schematic diagram of shear box suitable for vertical ring shear test of the invention.
Fig. 2 is the schematic internal view of outer cover and bottom plate in Fig. 1.
Fig. 3 is a schematic diagram of head cover in Fig. 1.
Fig. 4 is a schematic diagram of Fig. 1 bottom plates.
Fig. 5 is a schematic diagram of head cover hold-down bars in Fig. 1.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is further described.
Referring to FIG. 1, the embodiment provides a kind of shear box suitable for vertical ring shear test, including bottom plate
1, the centre of outer cover 2, head cover 3 and head cover hold-down bars 10, shear box is reserved with a cylindrical hole, when instrument is not used, in cylindrical hole
Head cover hold-down bars 10 is installed, when being tested, normal direction stress loading device is installed after head cover hold-down bars 10 is taken out.
Please refer to Fig.1,2 and 4, bottom plate 1 includes the Outer Bottom Plating 11 and the inner bottom plating 12 that are slidably installed together, 11 energy of Outer Bottom Plating
Hoop rotation occurs, for the hoop rotation of Outer Bottom Plating 11 preferably by shearing dynamical system driving, Outer Bottom Plating 11 includes 111 He of outside plate
Outer extension plate 112, the outer extension plate 112 is located at the inside of outside plate 111, and is integrally formed, and Outer Bottom Plating 11 is equipped with shear plate
113。
Inner bottom plating 12 is fixed, and inner bottom plating 12 is realized fixed by being fixed on a pedestal 4, and pedestal 4 is fixed on
On ground, the centre of pedestal 4 has the cylindrical cushion cap 41 of a protrusion, the inner bottom plating 12 to be bolted on cylindrical cushion cap
On 41, inner bottom plating 12 includes inner panel 121 and interior extension plate 122, and the interior extension plate 122 is located at the outside of inner panel 121, and one
Molding, inner bottom plating 12 are equipped with soil sample fixed blade 123.
The length of 112 cross section of length and outer extension plate of 122 cross section of interior extension plate is consistent, and the inner panel 121 is horizontal
The width of 111 cross section of width and outside plate in section is consistent, and interior extension plate 122 and outer extension plate 112 are oppositely arranged, interior extension
The inside of plate 122 is provided with guide groove 1221, and the inside of the outer extension plate 112 is equipped with conducting bar 1121 compatible with guide groove 1221,
The conducting bar 1121 can slide in guide groove 1221, and then make Outer Bottom Plating 11 that hoop rotation, outer bottom occur relative to inner bottom plating 12
Bed course 13 is equipped at the gap of plate 11 and inner bottom plating 12, the bed course 13 can reduce what Outer Bottom Plating 11 was generated along the sliding of inner bottom plating 12
Frictional force.
Preferably, it is provided with the discharge outlet 6 being circumferentially distributed everywhere on Inner bottom plates 12, rhone is provided with downwards along discharge outlet 6
7, and rhone 7 extends in the pedestal 4 of 12 lower section of inner bottom plating, and drainpipe (not shown), institute are laid in the rhone 7
It states and is equipped with one layer of filter screen (not shown) at discharge outlet 6, the discharge outlet 6 is equipped with a sealing cover 8, the sealing cover 8
It can be rotated, and then realize opening and the sealing of discharge outlet 6, for realizing draining shear history and undrained shear process.
It includes shearing hollow gear wheel 91, driver pinion 92, stepless speed-change motor 93, frequency converter to shear dynamical system 9
94, bearing 96 is connected in the middle part of gear wheel end support bearing 95 and gear wheel, the frequency converter 94 is fixed on pedestal 4, described
Frequency converter 94 connects stepless speed-change motor 93, and driver pinion 92, institute are connected on the active rotating shaft of the electrodeless variable-speed motor 93
It states driver pinion 92 and is engaged with hollow gear wheel 91 is sheared, and the hollow gear wheel 91 of shearing is driven to rotate, the Outer Bottom Plating 11
It is fixed on and shears on hollow gear wheel 91, the rotation for shearing hollow gear wheel 91 drives the rotation of Outer Bottom Plating 11, described to cut
The surrounding that hollow canine tooth torus 91 is placed on cylindrical cushion cap 41 is cut, it is described to shear between hollow gear wheel 91 and cylindrical cushion cap 41
It is provided in the middle part of gear wheel and connects bearing 96, the lower part for shearing hollow gear wheel 91 passes through gear wheel end support bearing 95
It is connected with pedestal 4, ensures that the stabilization for shearing hollow gear wheel 91 is freely rotated, the frequency converter 94 can be to stepless speed-change motor
93 output rotating speed carries out stable regulation, and then realizes the shear history under different shear rate.
It please refers to Fig.1 and Fig. 2, Outer Bottom Plating 11 and the lower end of outer cover 2 is fixed together, be equipped in the outer cover 2 and vertically lead
The position of rail 21, the vertical guide 21 and shear plate 113 is staggered.
It please refers to Fig.1 with 3, head cover 3 includes outer head cover 31 and the internal head cover 32 being slidably installed together, and internal head cover 32 includes
Inner cover plate 321 and extension plate 322, the extension plate 322 is located at the outside of inner cover plate 321, and is integrally formed with inner cover plate 321,
The lower section of the extension plate 322 is equipped with the sliding slot 3221 being recessed inwardly, and internal head cover 32 is internally provided with interior conducting bar 323.
Preferably, the top of internal head cover 32 is provided with horizontal bubble instrument 5, to be corrected to soil sample upper flat degree,
Ensure that soil sample upper surface is smooth.
Outer head cover 31 is located at the lower section of extension plate 322, the length of the length and 322 cross section of extension plate of 31 cross section of outer head cover
Spend consistent, the sum of the width of 31 cross section of outer head cover and the width of 322 cross section of extension plate and 321 cross section of inner cover plate
Width it is consistent, the top of outer head cover 31 is equipped with draw runner 311 compatible with sliding slot 3221, and draw runner 311 can be in sliding slot 3221
Interior sliding, and then make outer head cover 31 that hoop rotation occur relative to internal head cover 32, it is set at the gap of outer head cover 31 and internal head cover 32
There are bed course 33, the bed course 33 that can reduce the frictional force that outer head cover 31 is generated along the sliding of internal head cover 32.
The outer wall of outer head cover 31 is equipped with vertical guide groove 312 compatible with vertical guide 21, the bottom of the outer head cover 31
Equipped with shearing board slot (not shown) compatible with shear plate 113, sample to be sheared is put into shear box, by the top
Lid 3 is inserted into outer cover 2, vertical guide groove 312 on the outer head cover 31 and shear board slot respectively with vertical guide 21 and shear plate
113 are stuck, and then Outer Bottom Plating 11, outer cover 2 and outer head cover 31 is made to form external circumferential turning cell, meanwhile, soil sample fixing cutter
Piece 123 deeply penetrates the soil body, and it is fixed to play the role of the soil body, and the inner bottom plating 12 and internal head cover 32 form internal stationary
Room.
Referring to FIG. 5, head cover hold-down bars 10 includes barred body 103, support plate 102, hold-down bars plush copper 101, the hold-down bars
Plush copper 101 is fixed in the groove at the middle part of cylindrical cushion cap 41, and 102 side surrounding of the support plate is uniformly arranged that there are four supports
Vertical guide 21 in disk guide groove 1021, with the outer cover 2 matches, and the stick end of the barred body 103 is provided with stick end guide groove
1031, with the internal head cover 32 in be arranged interior conducting bar 323 match, the support plate guide groove 1021, stick end guide groove 1031 and
Hold-down bars plush copper 101 is for fixing barred body 103, and support plate guide groove 1021 is stuck with vertical guide 21, stick end guide groove 1031
It is stuck with interior conducting bar 323, the support plate 102 is used to provide support to the head cover 3 when instrument is not used.
The base of sample preparation and the process of experiment is carried out using a kind of shear box suitable for vertical ring shear test provided by the invention
This process is as follows：
It is by head cover 3 and axis pressure load by the axial confining pressure pressue device installation bolt hole 30 reserved on head cover 3 first
System is connected, and inner bottom plating 12 is fixed on a pedestal 4, extracts the head cover hold-down bars 10 in the middle part of shear box out, installs normal direction pressue device
And preloaded, formed soil sample charge space after load sample, in shear box and tamped, by the upper surface of sample into
Row leveling, the flatness of sample upper surface can be detected and be corrected by the horizontal bubble instrument 5 of 32 upper surface of internal head cover, sample
Rammer raising degree the height of shear plate 113 is not to be exceeded in principle, after sample upper table surface evenness reaches requirement, transfer head cover
3, when the lower edge of head cover 3 is soon contacted with outer cover 2, the vertical guide 21 of 2 inner wall of vertical guide groove 312 and outer cover is aligned,
Shear plate 113 and shearing board slot alignment, make vertical guide groove 312 and shearing board slot block respectively with vertical guide 21 and shear plate 113
Together, and then Outer Bottom Plating 11, outer cover 2 and outer head cover 31 is made to form external circumferential turning cell, meanwhile, joint axis presses loading system
So that soil sample fixed blade 123 deeply penetrates the soil body, it is fixed to play the role of the soil body, the inner bottom plating 12 and internal head cover 32
Internal stationary room is formed, starts electrodeless variable-speed motor 93, while shear velocity is set by frequency converter 94 so that electrodeless variable-speed electricity
93 stabilization of speed of machine increases to preset value, and the drive of driver pinion 92 is sheared hollow gear wheel 91 and rotated, so that outside
Portion hoop rotation room follows the hollow gear wheel of shearing 91 to be rotated, and realizes the failure by shear to sample.
The embodiment provides a kind of and sample preparations in experiment, and by novel connection and the kind of drive into
A kind of shear box suitable for vertical ring shear test of row experiment, it can be achieved that ring shear test to Rock And Soil vertical shearing face, and
It can realize and shear rate is accurately controlled, improve the stability of vertical ring shear test.The related ring shear test instrument of cooperation, can
It realizes to peak value of Rock And Soil under the conditions of big shear displacemant is anti-under the conditions of different normal pressures, confining pressure and under different shear rate
The blank in vertical shearing face ring scissor test instrument field has been filled up in the research for cutting intensity, residual strength and strain softening process.
Herein, the nouns of locality such as involved front, rear, top, and bottom are to be located in figure with parts in attached drawing and zero
Part mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the noun of locality
Use should not limit the claimed range of the application.
In the absence of conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of shear box suitable for vertical ring shear test, which is characterized in that fixed including bottom plate, outer cover, head cover and head cover
Stick, the bottom plate include the Outer Bottom Plating and inner bottom plating being slidably installed together, and the inner bottom plating is fixed, the Outer Bottom Plating energy
Occur hoop rotation, the inner bottom plating be equipped with soil sample fixed blade, the Outer Bottom Plating be equipped with shear plate, the Outer Bottom Plating with
The lower end of outer cover is fixed together, and is equipped with vertical guide in the outer cover, and the position of the vertical guide and shear plate is staggered, institute
It includes outer head cover and the internal head cover being slidably installed together to state head cover, and the outer wall of the outer head cover is equipped with to be adapted with vertical guide
Vertical guide groove, the bottom of the outer head cover is equipped with shearing board slot compatible with shear plate, sample to be sheared is put into shearing
In box, the head cover is inserted into outer cover, vertical guide groove on the outer head cover and shear board slot respectively with vertical guide and cut
Cutting plate is stuck, and then Outer Bottom Plating, outer cover and outer head cover is made to form external circumferential turning cell, the inner bottom plating and internal head cover shape
At internal stationary room, the internal head cover is internally provided with interior conducting bar.
2. a kind of shear box suitable for vertical ring shear test according to claim 1, which is characterized in that the Outer Bottom Plating
Including outside plate and outer extension plate, the outer extension plate is located at the inside of outside plate, and is integrally formed, the inner bottom plating include inner panel and
Interior extension plate, the interior extension plate is located at the outside of inner panel, and is integrally formed, and the interior extension plate and outer extension plate are set relatively
It sets, guide groove is provided on the inside of the interior extension plate, the inside of the outer extension plate is equipped with conducting bar compatible with guide groove, described to lead
Item can slide in guide groove, and then make Outer Bottom Plating that hoop rotation occur relative to inner bottom plating.
3. a kind of shear box suitable for vertical ring shear test according to claim 2, which is characterized in that the interior extension
The length of plate cross section and the length of outer extension plate cross section are consistent, the width of the inner panel cross section and outside plate cross section
Width is consistent, and bed course is equipped at the gap of the Outer Bottom Plating and inner bottom plating, and the bed course can reduce Outer Bottom Plating and be slided along inner bottom plating
The frictional force of movable property life.
4. a kind of shear box suitable for vertical ring shear test according to claim 1, which is characterized in that the internal head cover
Including inner cover plate and extension plate, the extension plate is located at the outside of inner cover plate, and is integrally formed with inner cover plate, the extension plate
Lower section is equipped with the sliding slot being recessed inwardly, and the outer head cover is located at the lower section of extension plate, and the top of outer head cover is equipped with and sliding slot phase
The draw runner of adaptation, the draw runner can slide in sliding slot, and then make outer head cover that hoop rotation occur relative to internal head cover.
5. a kind of shear box suitable for vertical ring shear test according to claim 4, which is characterized in that the outer head cover
The length of cross section is consistent with the length of extension plate cross section, width and the extension plate cross section of the outer head cover cross section
The sum of width is consistent with the width of inner cover plate cross section, and bed course, the pad are equipped at the gap of the outer head cover and internal head cover
Layer can reduce the frictional force that outer head cover is generated along internal head cover sliding.
6. a kind of shear box suitable for vertical ring shear test according to claim 1, which is characterized in that the internal head cover
Top be provided with horizontal bubble instrument, be provided with the discharge outlet being circumferentially distributed everywhere on the Inner bottom plates, opened downwards along discharge outlet
There is rhone, drainpipe is laid in the rhone, one layer of filter screen is equipped at the discharge outlet, the discharge outlet is equipped with one
Sealing cover, the sealing cover can be rotated, so realize discharge outlet opening and sealing, for realizing draining shear history and
Undrained shear process.
7. a kind of shear box suitable for vertical ring shear test according to claim 1, which is characterized in that the inner bottom plating
Realize fixed by being fixed on a pedestal, there are the cylindrical cushion cap of a protrusion, the inner bottom plating in the centre of the pedestal
It is bolted on cylindrical cushion cap.
8. a kind of shear box suitable for vertical ring shear test according to claim 7, which is characterized in that the Outer Bottom Plating
Hoop rotation by shearing dynamical system driving, the shearing dynamical system include the hollow gear wheel of shearing, driver pinion,
Bearing is connected in the middle part of stepless speed-change motor, frequency converter, gear wheel end support bearing and gear wheel, the frequency converter is fixed on bottom
On seat, the frequency converter connects stepless speed-change motor, connects driver pinion on the active rotating shaft of the electrodeless variable-speed motor, institute
It states driver pinion and is engaged with hollow gear wheel is sheared, and drive the hollow bull gear drive of shearing, the Outer Bottom Plating, which is fixed on, to be cut
It cuts on hollow gear wheel, the rotation of the hollow gear wheel of shearing drives the rotation of Outer Bottom Plating, the hollow canine tooth torus of shearing
It is placed on the surrounding of cylindrical cushion cap, connecting shaft in the middle part of gear wheel is provided between the hollow gear wheel of shearing and cylindrical cushion cap
It holds, the lower part of the hollow gear wheel of shearing is connected by gear wheel end support bearing with pedestal, ensures to shear hollow canine tooth
The stabilization of wheel is freely rotated, and the frequency converter can carry out the output rotating speed of stepless speed-change motor stable regulation, and then realize
Shear history under different shear rate.
9. a kind of shear box suitable for vertical ring shear test according to claim 7, which is characterized in that the head cover is solid
It includes barred body, support plate, hold-down bars plush copper to determine stick, and the hold-down bars plush copper is fixed in the groove in the middle part of cylindrical cushion cap, institute
It states support plate side surrounding and is uniformly arranged that there are four the vertical guides in support plate guide groove, with the outer cover to match, the stick
The stick end of body is provided with stick end guide groove, matches with the interior conducting bar being arranged in the internal head cover, the guide groove and hold-down bars plush copper
For fixing barred body, the support plate is used to provide support to the head cover when instrument is not used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810234303.8A CN108426786B (en) | 2018-03-21 | 2018-03-21 | A kind of shear box suitable for vertical ring shear test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810234303.8A CN108426786B (en) | 2018-03-21 | 2018-03-21 | A kind of shear box suitable for vertical ring shear test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108426786A true CN108426786A (en) | 2018-08-21 |
| CN108426786B CN108426786B (en) | 2019-09-17 |
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| CN109557023A (en) * | 2018-11-19 | 2019-04-02 | 河海大学 | It is a kind of can self-adapting stretching deformation platen systems and its application method |
| CN111044390A (en) * | 2019-12-30 | 2020-04-21 | 武汉科技大学 | Shear box for testing structural surface anisotropy of rock sample and use method thereof |
| CN112378784A (en) * | 2021-01-15 | 2021-02-19 | 西南交通大学 | Portable soil body in-situ shear test device and test method thereof |
| CN112540012A (en) * | 2020-12-04 | 2021-03-23 | 哈尔滨工业大学 | Annular pure shear loading method and device for pipe |
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