CN206848084U - A kind of cross plate shearing instrument - Google Patents
A kind of cross plate shearing instrument Download PDFInfo
- Publication number
- CN206848084U CN206848084U CN201720521808.3U CN201720521808U CN206848084U CN 206848084 U CN206848084 U CN 206848084U CN 201720521808 U CN201720521808 U CN 201720521808U CN 206848084 U CN206848084 U CN 206848084U
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- CN
- China
- Prior art keywords
- axostylus axostyle
- upper shaft
- shaft lever
- quarter moon
- lower axostylus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Piles And Underground Anchors (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a kind of cross plate shearing instrument, including upper shaft lever, lower axostylus axostyle and cross wrench, lower axostylus axostyle bottom connects cross wrench, and first quarter moon tooth is fixed with lower axostylus axostyle, the first quarter moon tooth being engaged with the first quarter moon tooth on lower axostylus axostyle is provided with upper shaft lever bottom；The upper shaft lever is hollow-core construction, and shaft part piecemeal activity insertion more than the first quarter moon tooth of lower axostylus axostyle is arranged in upper shaft lever；By controlling the lifting of upper shaft lever, realize that the first quarter moon tooth on the first quarter moon tooth and lower axostylus axostyle of upper shaft lever bottom is engaged with separating.The boxshear apparatus is when carrying out live vane shear test, by increasing measurement frictional force and mechanical resistance moment of torsion, when calculating soil body undrained shear strength, subtract this part moment of torsion, the soil body undrained shear strength index being calculated is closer to actual value, so as to provide reliable data for engineer applied.
Description
Technical field
The utility model belongs to the engineering device technique field of rock-soil engineering in-situ test, and in particular to a kind of vane-shear
Instrument.
Background technology
In geotechnical engineering investigation field, in order to determine the not draining of the undrained shear strength, manipulated soil of saturation soft clay
The sensitivity of shearing strength and the soil body, the vane shear test of generally use original position.Cross plate shearing instrument in situ, which is divided into, machinery
Formula and electric measuring type, and mechanical cross plate shearing instrument primary structure is device for measuring force, outer tube, inner cross board shaft bar, four-bladed vane
Head；Electrical measurement four-bladed vane primary structure is data collecting system, injection power apparatus, axostylus axostyle, wire, band torsion torque sensor four-bladed vane
Head.
For mechanical four-bladed vane when measuring soil body undrained shear strength, torsional moment is the soil body to cross wrench and axostylus axostyle
Torsional moment sum.It is bigger than the soil body undrained shear strength of reality that draining shearing strength is calculated, influences test parameters
Accuracy.In practical engineering application, measured data generally require to be multiplied by reduction coefficient.Reduction coefficient and Plastic flow of soil index
There are much relations, rather than a definite value with the time required for failure by shear, so there are still certain error.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of cross plate shearing instrument.The boxshear apparatus
When carrying out live vane shear test, by increasing measurement frictional force and mechanical resistance moment of torsion, the soil body not draining is being calculated
During shearing strength, this part moment of torsion is subtracted, the soil body undrained shear strength index being calculated is closer to actual value.
The utility model is achieved through the following technical solutions：
A kind of cross plate shearing instrument, including upper shaft lever, lower axostylus axostyle and cross wrench, lower axostylus axostyle bottom connect cross wrench,
First quarter moon tooth is fixed with lower axostylus axostyle, the first quarter moon tooth being engaged with the first quarter moon tooth on lower axostylus axostyle is provided with upper shaft lever bottom；Institute
It is hollow-core construction to state upper shaft lever, and shaft part piecemeal activity insertion more than the first quarter moon tooth of lower axostylus axostyle is arranged in upper shaft lever；Pass through control
The lifting of upper shaft lever processed, realize that the first quarter moon tooth on the first quarter moon tooth and lower axostylus axostyle of upper shaft lever bottom is engaged with separating.
In the above-mentioned technical solutions, there is expanding dop end on lower axostylus axostyle top, prevents lower axostylus axostyle from departing from from upper shaft lever.
The advantages of the utility model and have the beneficial effect that：
1, during the utility model can measure vane shear test, torque caused by axostylus axostyle rubbing action, counting
When calculating soil body undrained shear strength index, torque caused by axostylus axostyle rubbing action is subtracted, soil body undrained shear strength approaches
Actual value.
2, the present invention is simple to operate, easy to loading and unloading, and operating efficiency is greatly improved.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model cross plate shearing instrument.
Fig. 2 is 1 sectional view.
Fig. 3 be cross plate shearing instrument upper shaft lever and lower axostylus axostyle first quarter moon tooth occlusion when structural representation.
Wherein：1 is upper shaft lever, and 2 be lower axostylus axostyle, and 3 be first quarter moon tooth, and 4 be cross wrench.
Embodiment
The technical solution of the utility model is further illustrated with reference to specific embodiment.
A kind of cross plate shearing instrument involved by the utility model, as illustrated, including upper shaft lever 1, lower axostylus axostyle 2, cross
Wrench 4,
The lower bottom of axostylus axostyle 2 connection cross wrench 4, is fixed with first quarter moon tooth 3 on lower axostylus axostyle 2, the bottom of upper shaft lever 1 be provided with
The first quarter moon tooth that first quarter moon tooth on lower axostylus axostyle is engaged；Upper shaft lever 1 is hollow-core construction, axle more than the first quarter moon tooth of the lower axostylus axostyle 2
Section piecemeal activity insertion is arranged in upper shaft lever 1, so that lower axostylus axostyle top end shaft section part can slide up and down and turn in upper shaft lever
It is dynamic；There is expanding dop end on lower axostylus axostyle top, to prevent lower axle bar from departing from from upper shaft lever.
Soil body depth is tested in use, four-bladed vane is pressed into, the first quarter moon tooth on the first quarter moon tooth of upper shaft lever bottom and lower axostylus axostyle
It is engaged (Fig. 3), reverses device for measuring force and carry out vane shear test, survey and read torsion ring reading Pf。
After undisturbed soil vane shear test terminates, upper shaft lever is lifted, is made on the first quarter moon tooth and lower axostylus axostyle of upper shaft lever bottom
First quarter moon tooth separation (Fig. 1 and Fig. 2), reverse device for measuring force and tested, survey and read torsion ring reading P0。
Finally, soil body undrained shear strength index C is calculatedu=1000kc(Pf-P0), kc is cross wrench constant.
Exemplary description is done to the utility model above, it should explanation, do not departing from core of the present utility model
In the case of the heart, any simple deformation, modification or other skilled in the art can not spend creative work etc.
The scope of protection of the utility model is each fallen within replacing.
Claims (2)
1. a kind of cross plate shearing instrument, including upper shaft lever, lower axostylus axostyle and cross wrench, it is characterised in that：Lower axostylus axostyle bottom connection
Cross wrench, first quarter moon tooth is fixed with lower axostylus axostyle, is provided with what is be engaged with the first quarter moon tooth on lower axostylus axostyle in upper shaft lever bottom
First quarter moon tooth；The upper shaft lever is hollow-core construction, and shaft part piecemeal activity insertion more than the first quarter moon tooth of lower axostylus axostyle is arranged on upper shaft lever
In, by controlling the lifting of upper shaft lever, realize that the first quarter moon tooth on the first quarter moon tooth and lower axostylus axostyle of upper shaft lever bottom is engaged with separating.
A kind of 2. cross plate shearing instrument according to claim 1, it is characterised in that：There is expanding dop on lower axostylus axostyle top
End, prevents lower axostylus axostyle from departing from from upper shaft lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720521808.3U CN206848084U (en) | 2017-05-11 | 2017-05-11 | A kind of cross plate shearing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720521808.3U CN206848084U (en) | 2017-05-11 | 2017-05-11 | A kind of cross plate shearing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206848084U true CN206848084U (en) | 2018-01-05 |
Family
ID=60795582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720521808.3U Active CN206848084U (en) | 2017-05-11 | 2017-05-11 | A kind of cross plate shearing instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206848084U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871975A (en) * | 2018-03-23 | 2018-11-23 | 中交天津港湾工程研究院有限公司 | It is a kind of can continuous injection the mechanical vane apparatus with clutch tooth |
-
2017
- 2017-05-11 CN CN201720521808.3U patent/CN206848084U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871975A (en) * | 2018-03-23 | 2018-11-23 | 中交天津港湾工程研究院有限公司 | It is a kind of can continuous injection the mechanical vane apparatus with clutch tooth |
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