CN106290005A - The strain direct shear apparatus such as the tetrad of air pressure-loading - Google Patents
The strain direct shear apparatus such as the tetrad of air pressure-loading Download PDFInfo
- Publication number
- CN106290005A CN106290005A CN201610602380.5A CN201610602380A CN106290005A CN 106290005 A CN106290005 A CN 106290005A CN 201610602380 A CN201610602380 A CN 201610602380A CN 106290005 A CN106290005 A CN 106290005A
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- Prior art keywords
- pressure
- direct shear
- loading
- air
- tetrad
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The tetrad etc. that the invention discloses a kind of air pressure-loading strains direct shear apparatus, including four direct shear boxes being arranged side by side, the top of direct shear box, bottom connects promotion seat and direct shear apparatus determinator respectively, soil sample to be tested is placed in direct shear box, soil sample nationality to be tested is applied pressure vertically downward by charger, charger is air pressure loading device, air pressure loading device includes pressure transfer device, Pneumatic pressure output device and air control unit, pressure transfer device is connected with Pneumatic pressure output device, the pressure transmission that Pneumatic pressure output device is exported by pressure transfer device forms pressure vertically downward to soil sample to be tested, air control unit is connected with Pneumatic pressure output device, air control unit drives and controls Pneumatic pressure output device output pressure.Present invention air pressure-loading, compact conformation, small in volume, to exert oneself big, output pressure is constant, stable, it is possible to be effectively improved the Detection results of direct shear apparatus.
Description
Technical field
The present invention relates to soil shear strength technical field of measurement and test, the tetrad etc. particularly to a kind of air pressure-loading should straighten
Cut instrument.
Background technology
It is a kind of instrument being specifically designed to mensuration soil classifiction Deng strain direct shear apparatus, is widely used in various building
The design of the architectural engineerings such as room, bridge, tunnel and construction.Its main operational principle is, uses four soil samples, hangs down in difference respectively
Under vertical compression power (such as: 400Kpa, 300Kpa, 200Kpa, 100Kpa, 50Kpa are optional), apply horizontal force to carry out shearing in the hope of broken
The shear stress in bad time, then determines soil classifiction parameter, internal friction angle and cohesiveness according to Coulomb's law.
In the prior art, generally using the mode of lever pressurization, one section of placement counterweight at lever is formed by lever
Perpendicular acting pressure to soil sample to be tested.But, in actual application process, owing to the reason such as rotation of lever can cause
Loading structure is loose, and little, the volume of exerting oneself is big, and overall structure is heavy.Existing direct shear apparatus uses loaded down with trivial details, mobile inconvenience, outward appearance
Less attractive.
Summary of the invention
Because the drawbacks described above of prior art, the present invention provides the strain direct shear apparatuses such as the tetrad of a kind of air pressure-loading, real
One of existing purpose is compact conformation, small in volume, exerts oneself big, simple to operate, conveniently moving.
For achieving the above object, the tetrad etc. that the invention provides a kind of air pressure-loading strains direct shear apparatus, including four also
The direct shear box that row is arranged, the top of described direct shear box, bottom connect promotion seat and direct shear apparatus determinator, described direct shear box respectively
Interior placement soil sample to be tested, described soil sample nationality to be tested is applied pressure vertically downward by charger, and described charger is
Air pressure loading device, described air pressure loading device includes pressure transfer device, Pneumatic pressure output device and air control unit,
Described pressure transfer device is connected with described Pneumatic pressure output device, and described Pneumatic pressure is exported by described pressure transfer device
The pressure transmission of device output forms pressure vertically downward to described soil sample to be tested, and described air control unit is with described
Pneumatic pressure output device connects, and described air control unit drives and controls described Pneumatic pressure output device output pressure.
By air pressure-loading, there is compact conformation, small in volume, big feature of exerting oneself, and described air pressure-loading
Device is driven by pneumatic mode, and output pressure is constant, stable, it is possible to be effectively improved the Detection results of direct shear apparatus.
Preferably, described pressure transfer device includes power bar, entablature and sill, described entablature is horizontal be arranged on described
Above direct shear box, described entablature connects described power bar, and described power bar is vertically arranged, described power bar upper end is connected with entablature,
Lower end is stretched at described direct shear box upper opening and is pushed down described soil sample to be tested, and described entablature two ends are with described sill even
Connecing, described sill is positioned at below described direct shear box, and described sill is connected with described Pneumatic pressure output device, and nationality is by institute
State power bar and the pressure transmission extremely described soil sample to be tested that described Pneumatic pressure output device exports said by described entablature.
Preferably, described power bar nationality is connected with described entablature by adjusting nut, and nationality is adjusted by regulating described adjusting nut
Described power bar length between described direct shear box and described entablature.
Preferably, described Pneumatic pressure output device is to add carrier gas cylinder, described in add carrier gas cylinder and be arranged under described direct shear box
Just, the piston adding carrier gas cylinder described in is connected with described sill.
Preferably, add carrier gas cylinder described in and include that cylinder upper cover, lower cover of air cylinder and the axis of guide, described axis of guide one end are arranged on
Being connected with described piston in the cylinder body of described cylinder upper cover and described lower cover of air cylinder composition, the described axis of guide other end stretches out described
The sealing plate of cylinder upper cover connects with described sill.
Preferably, it is provided with bearing between the described axis of guide and described sill.
Preferably, described air control unit includes pressure regulator valve, and described pressure regulator valve connects air pressure respectively by air pipe line
Pump and the described carrier gas cylinder that adds, described pressure regulator valve control described in add carrier gas cylinder output pressure.
Preferably, described pressure regulator valve is connected with pressure transducer and display screen.
Preferably, described direct shear box, described promotion seat and described direct shear apparatus determinator are arranged on above casing, described gas
Dynamic pressure output device and described air control unit are arranged in casing.
Preferably, four described promotion seats are connected with four turbine boxes, between the power shaft of four described turbine boxes respectively
Being interconnected by shaft coupling, described turbine box nationality is by motor-driven.
Beneficial effects of the present invention:
1, present invention air pressure loading system, has compact conformation, small in volume, exerts oneself big, simple to operate, moves
Dynamic convenient.
2, the present invention load system to have broken domestic conventional test methods is that soil test innovation opens new starting point.
Below with reference to accompanying drawing, the technique effect of design, concrete structure and the generation of the present invention is described further, with
It is fully understood from the purpose of the present invention, feature and effect.
Accompanying drawing explanation
Fig. 1 illustrates the partial structurtes schematic diagram of the present invention one specific embodiment.
Fig. 2 illustrates the overall structure schematic diagram of the present invention one specific embodiment.
Fig. 3 illustrates the structural representation in B direction in Fig. 2.
Fig. 4 illustrates the structural representation of air control unit in a specific embodiment.
Detailed description of the invention
Embodiment
As shown in Figures 2 and 3, the embodiment of the strain direct shear apparatuses such as the tetrad of a kind of air pressure-loading of the present invention, including four
The individual direct shear box 1 being arranged side by side, the top of direct shear box 1, bottom connect promotion seat 2 and direct shear apparatus determinator 3, direct shear box respectively
Placing soil sample to be tested in 1, soil sample nationality to be tested is applied pressure vertically downward by charger 4, and charger 4 is that air pressure adds
Carrying and put, air pressure loading device includes pressure transfer device, Pneumatic pressure output device and air control unit, and pressure transmission fills
Putting and be connected with Pneumatic pressure output device, the pressure transmission that Pneumatic pressure output device is exported by pressure transfer device is to be tested
Forming pressure vertically downward in soil sample, air control unit is connected with Pneumatic pressure output device, and air control unit drives
And control Pneumatic pressure output device output pressure.
By air pressure-loading, there is compact conformation, small in volume, big feature of exerting oneself, and air pressure loading device
Being driven by pneumatic mode, output pressure is constant, stable, it is possible to be effectively improved the Detection results of direct shear apparatus.
In certain embodiments, as it is shown in figure 1, pressure transfer device includes power bar 41, entablature 42 and sill 43, on
Crossbeam horizontal stroke 42 is arranged on above direct shear box 1, entablature 42 attachment force bar 41, and power bar 41 is vertically arranged, power bar 41 upper end and upper horizontal stroke
Beam connects, lower end is stretched at direct shear box 1 upper opening and pushed down soil sample to be tested, and entablature 42 two ends are connected with sill 43,
Sill 43 is positioned at below direct shear box 1, and sill 43 is connected with Pneumatic pressure output device, and nationality is by power bar 41 and entablature 42
Say the pressure transmission extremely soil sample to be tested that Pneumatic pressure output device exports.
In addition to this it is possible to be connected with entablature by adjusting nut 44 by power bar 41 nationality, nationality is by regulating adjusting nut 44
The adjustment power bar 41 length between direct shear box 1 and entablature 42.
In some preferred embodiments, Pneumatic pressure output device is to add carrier gas cylinder, adds carrier gas cylinder and is arranged on direct shear box 1
Lower section, the piston 45 adding carrier gas cylinder is connected with sill.
On this basis, adding carrier gas cylinder and include cylinder upper cover 46, lower cover of air cylinder 47 and the axis of guide 48, the axis of guide 48 one end is pacified
Being connected with piston 45 in being contained in the cylinder body of cylinder upper cover 46 and lower cover of air cylinder 47 composition, the axis of guide 48 other end stretches out cylinder upper cover
The sealing plate 49 of 46 is connected with sill.
It is also preferred that the left be provided with bearing 5 between the axis of guide and sill.
In some preferred embodiments, as shown in Figure 4, air control unit includes that pressure regulator valve, pressure regulator valve pass through air
Pipeline connects pulsometer respectively and adds carrier gas cylinder, pressure regulator valve controlled loading cylinder output pressure.
In addition to this it is possible to pressure regulator valve is connected with pressure transducer and display screen.Straight for Real Time Observation and record
Cut the state of instrument.
In use, pneumatic supply enters air control unit, by pressure transducer and display screen Control experiment pressure, controls
Air pressure enters and adds carrier gas cylinder, and nationality is promoted cylinder piston by the rolling diaphragm adding carrier gas cylinder, is applied to sill by the axis of guide 48
43, the pressure transfer device that entablature 42 is constituted with power bar 41, thus soil sample to be tested applies consolidation pressure in shear box 1.
In certain embodiments, as in figure 2 it is shown, direct shear box 1, promotion seat 2 and direct shear apparatus determinator 3 are arranged on casing 6
Above, Pneumatic pressure output device and air control unit are arranged in casing.
In further embodiments, as it is shown on figure 3, four promote seat 2 to be connected with four turbine boxes 7 respectively, four turbines
Being interconnected by shaft coupling 8 between the power shaft of case 7, turbine box 7 nationality is driven by motor 9.
In actual use:
1. by shear box about 1 Ge Jia upper dankness stone one piece, load onto power bar 41, entablature 42 is put down gently in soil sample to be tested
On.
2. starting pulsometer, air control unit drives and controls Pneumatic pressure output device output pressure.
3. actuating motor 9 makes shear box 1 advance and touches the ergometer on direct shear apparatus determinator 3, and direct shear apparatus measures
Dial gauge pointer on device 3 is slightly dynamic i.e. to be stopped.
4. mention entablature 42, make power bar 41 leave shear box 1, lean against on promotion seat 2.
5. it is inserted with two screw rod latches on shear box 1, during on-test, screw rod latch should be screwed off.
6. actuating motor 9, every revolution, impeller-hub advance 0.20mm.
7. after having tested, being not required to adjust, only power bar 41 upwards lift-off shear box need to be taken out sample, cleaning is cut
Second time test is done again after cutting box.
The preferred embodiment of the present invention described in detail above.Should be appreciated that those of ordinary skill in the art without
Need creative work just can make many modifications and variations according to the design of the present invention.Therefore, all technology in the art
Personnel are available by logical analysis, reasoning, or a limited experiment the most on the basis of existing technology
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (10)
1. the strain such as the tetrad of an air pressure-loading direct shear apparatus, including four direct shear boxes being arranged side by side (1), described direct shear box
(1) top, bottom are placed to be tested in connecting promotion seat (2) and direct shear apparatus determinator (3), described direct shear box (1) respectively
Soil sample, described soil sample nationality to be tested is applied pressure vertically downward by charger (4)；It is characterized in that, described charger
(4) being air pressure loading device, described air pressure loading device includes pressure transfer device, Pneumatic pressure output device and pneumatic control
Device, described pressure transfer device is connected with described Pneumatic pressure output device, and described pressure transfer device is by described Pneumatic pressure
The pressure transmission of power output device output forms pressure vertically downward, described air control unit to described soil sample to be tested
Being connected with described Pneumatic pressure output device, described air control unit drives and controls the output of described Pneumatic pressure output device
Pressure.
The strain direct shear apparatus such as the tetrad of air pressure-loading the most according to claim 1, it is characterised in that described pressure transmission fills
Putting and include power bar (41), entablature (42) and sill (43), described entablature horizontal (42) is arranged on described direct shear box (1)
Side, described entablature (42) connects described power bar (41), and described power bar (41) is vertically arranged, described power bar (41) upper end and upper horizontal stroke
Beam connects, lower end is stretched at described direct shear box (1) upper opening and pushed down described soil sample to be tested, described entablature (42) two ends
Being connected with described sill (43), described sill (43) is positioned at described direct shear box (1) lower section, and described sill (43) is with described
Pneumatic pressure output device connects, and nationality is said described Pneumatic pressure output device by described power bar (41) and described entablature (42)
The pressure transmission of output is to described soil sample to be tested.
The strain direct shear apparatus such as the tetrad of air pressure-loading the most according to claim 2, it is characterised in that described power bar (41) nationality
Being connected with described entablature by adjusting nut (44), nationality adjusts described power bar (41) and is positioned at institute by regulating described adjusting nut (44)
State the length between direct shear box (1) and described entablature (42).
The strain direct shear apparatus such as the tetrad of air pressure-loading the most according to claim 2, it is characterised in that described Pneumatic pressure is defeated
Going out device is to add carrier gas cylinder, described in add carrier gas cylinder and be arranged on described direct shear box (1) lower section, described in add the piston (45) of carrier gas cylinder with
Described sill connects.
The tetrad of air pressure-loading the most according to claim 4 etc. strain direct shear apparatus, it is characterised in that described in add carrier gas cylinder bag
Including cylinder upper cover (46), lower cover of air cylinder (47) and the axis of guide (48), the described axis of guide (48) one end is arranged on described cylinder upper cover
(46) and being connected with described piston (45) in the cylinder body that forms of described lower cover of air cylinder (47), the described axis of guide (48) other end stretches out
The sealing plate (49) of described cylinder upper cover (46) is connected with described sill.
The strain direct shear apparatus such as the tetrad of air pressure-loading the most according to claim 5, it is characterised in that the described axis of guide and institute
State and between sill, be provided with bearing (5).
The strain direct shear apparatus such as the tetrad of air pressure-loading the most according to claim 4, it is characterised in that described pneumatic control fills
Putting and include pressure regulator valve, described pressure regulator valve connects pulsometer and the described carrier gas cylinder that adds, described pressure regulator valve control respectively by air pipe line
Carrier gas cylinder output pressure is added described in system.
The strain direct shear apparatus such as the tetrad of air pressure-loading the most according to claim 7, it is characterised in that described pressure regulator valve and pressure
Force transducer and display screen connect.
The strain direct shear apparatus such as the tetrad of air pressure-loading the most as claimed in any of claims 1 to 8, it is characterised in that
Described direct shear box (1), described promotion seat (2) and described direct shear apparatus determinator (3) are arranged on casing (6) above, described pneumatic
Pressure output device and described air control unit are arranged in casing.
The strain direct shear apparatus such as the tetrad of air pressure-loading the most as claimed in any of claims 1 to 8, it is characterised in that
Four described promotion seats (2) are connected with four turbine boxes (7) respectively, by connection between the power shaft of four described turbine boxes (7)
Axial organ (8) interconnects, and described turbine box (7) nationality is driven by motor (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610602380.5A CN106290005A (en) | 2016-07-28 | 2016-07-28 | The strain direct shear apparatus such as the tetrad of air pressure-loading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610602380.5A CN106290005A (en) | 2016-07-28 | 2016-07-28 | The strain direct shear apparatus such as the tetrad of air pressure-loading |
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| Publication Number | Publication Date |
|---|---|
| CN106290005A true CN106290005A (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610602380.5A Pending CN106290005A (en) | 2016-07-28 | 2016-07-28 | The strain direct shear apparatus such as the tetrad of air pressure-loading |
Country Status (1)
| Country | Link |
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| CN (1) | CN106290005A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530724A (en) * | 2019-09-30 | 2019-12-03 | 兰州理工大学 | A kind of rock soil medium tensile-sbear strength method for testing and analyzing |
| CN110530739A (en) * | 2019-08-26 | 2019-12-03 | 常熟市徐润机电有限公司 | Full-automatic tetrad strain controlling formula direct shear apparatus |
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| JP2003139672A (en) * | 2001-11-06 | 2003-05-14 | Tomoyoshi Nishimura | Displacement control type single-plane shear testing machine capable of pneumatic loading |
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| CN105136586A (en) * | 2015-08-25 | 2015-12-09 | 山西省交通科学研究院 | Direct shear and draw test instrument for anisotropy of geotechnical materials and implementation method thereof |
| CN105547864A (en) * | 2016-01-22 | 2016-05-04 | 武汉轻工大学 | Method for determining shear strength of chemically polluted soil and special full-automatic direct shear apparatus |
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08247913A (en) * | 1994-02-28 | 1996-09-27 | Maeda Corp | Equal volume shear test equipment |
| JP2003139672A (en) * | 2001-11-06 | 2003-05-14 | Tomoyoshi Nishimura | Displacement control type single-plane shear testing machine capable of pneumatic loading |
| CN101592575A (en) * | 2009-05-27 | 2009-12-02 | 中国科学院地质与地球物理研究所 | Airbag-loading potable weak and soft interlayer direct shear apparatus |
| CN103134729A (en) * | 2013-02-18 | 2013-06-05 | 长安大学 | Stress-strain control type direct shear apparatus |
| CN103616300A (en) * | 2013-12-03 | 2014-03-05 | 中国科学院武汉岩土力学研究所 | Device and method for testing direct shear intensity of soil containing natural gas hydrate |
| CN203772658U (en) * | 2014-04-09 | 2014-08-13 | 洛阳理工学院 | Hand-operated equal-strain direct shear apparatus |
| CN104713788A (en) * | 2015-03-30 | 2015-06-17 | 西安长庆科技工程有限责任公司 | Strain-control type tension-shearing direct shear apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530739A (en) * | 2019-08-26 | 2019-12-03 | 常熟市徐润机电有限公司 | Full-automatic tetrad strain controlling formula direct shear apparatus |
| CN110530739B (en) * | 2019-08-26 | 2024-02-27 | 常熟市徐润机电有限公司 | Full-automatic four-linkage strain control type direct shear apparatus |
| CN110530724A (en) * | 2019-09-30 | 2019-12-03 | 兰州理工大学 | A kind of rock soil medium tensile-sbear strength method for testing and analyzing |
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Application publication date: 20170104 |