CN103969130B - A kind of manually grade strains direct shear apparatus - Google Patents
A kind of manually grade strains direct shear apparatus Download PDFInfo
- Publication number
- CN103969130B CN103969130B CN201410139777.6A CN201410139777A CN103969130B CN 103969130 B CN103969130 B CN 103969130B CN 201410139777 A CN201410139777 A CN 201410139777A CN 103969130 B CN103969130 B CN 103969130B
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- China
- Prior art keywords
- pressure transmission
- support stand
- horizontal
- shear
- cover plate
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of manually grade strains direct shear apparatus, relate to a kind of earthwork test Instrument, including support stand and the horizontal loading system being arranged on support stand, vertical pressue device, shear box and horizontal shear measurement apparatus, the bottom of shear box is provided with slider bar, slider bar is slidably arranged on support stand, described horizontal loading system includes the horizontal pushing block being arranged on support stand by guide rail and the handwheel driving horizontal pushing block to move by driving gear set, horizontal pushing block is connected with slider bar, described vertical pressue device includes that is placed on the pressure transmission screw that the pressure transmission cover plate above sample in shear box and are applied vertical pressure by force application mechanism band trend pressure transmission cover plate, the bottom of described pressure transmission screw is provided with hemispherical projections, described pressure transmission cover plate is provided with the ball recess matching with hemispherical projections.The present invention can make the pressure on the vertical direction that the sample in shear box is subject in process of the test become uniform, improves pressure transmission effect, and then improves the precision of test.
Description
Technical field
The present invention relates to a kind of earthwork test Instrument, specifically a kind of manually grade strains direct shear apparatus.
Background technology
It is used for measuring soil classifiction Deng strain direct shear apparatus, generally use four soil samples, respectively at various pressures
Apply shearing force to shear, try to achieve shear stress during soil sample failure by shear, then determine intensive parameter according to Coulomb's law
Internal friction angleAnd cohesiveness.Direct shear apparatus passes through sample in shear box for the pressure transmission screw of its vertical pressue device and applies perpendicular
Vertical compression power, between the pressure transmission screw of existing direct shear apparatus and the pressure transmission cover plate at shear box top, contact surface is plane, with shear box
Movement under horizontal shear effect, contacts not tight so that sample in the vertical direction between pressure transmission screw with pressure transmission cover plate
Pressurized is uneven, affects pressure transmission effect, reduces test accuracy.
Content of the invention
Not tight in order to solve to contact between the pressure transmission screw of existing direct shear apparatus and pressure transmission cover plate, the sample causing is vertically
Side is pressed up uneven problem, and the present invention provides a kind of manually grade to strain direct shear apparatus.
The present invention solves that what above-mentioned technical problem was used technical scheme is: a kind of manually wait strain direct shear apparatus, bag
Include support stand and the horizontal loading system being arranged on support stand, vertical pressue device, shear box and horizontal shear are surveyed
Amount device, the bottom of shear box is provided with slider bar, and slider bar is slidably arranged on support stand, described horizontal loading system
Including the horizontal pushing block being arranged on support stand by guide rail and the handwheel driving horizontal pushing block to move by driving gear set,
Horizontal pushing block is connected with slider bar, and described vertical pressue device includes that is placed on the pressure transmission cover plate above sample in shear box
With one by the pressure transmission screw of force application mechanism band trend pressure transmission cover plate applying vertical pressure, the bottom of described pressure transmission screw is provided with half
Hemisphere jut, described pressure transmission cover plate is provided with the ball recess matching with hemispherical projections.
A diameter of 10mm of described hemispherical projections, the degree of depth of described ball recess is 4mm, and top diameter is 11mm.
Beneficial effect: the present invention is by arranging corresponding hemispherical projections and spherical between pressure transmission screw and pressure transmission cover plate
Groove such that it is able to make both be fitted closely together, in process of the test, both are still in close contact, sample is in vertical side
It is pressed up uniformly, improve pressure transmission effect, and then improve the precision of test.
Brief description
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of pressure transmission screw of the present invention and pressure transmission cover plate.
Being labeled as in figure: the 1st, support stand, the 2nd, horizontal loading system, the 3rd, vertical pressue device, the 4th, shear box, the 5th, level is cut
Force measuring device, the 6th, pressure transmission screw, the 7th, pressure transmission cover plate, the 8th, hemispherical projections, the 9th, ball recess, the 10th, horizontal pushing block, the 11st, handwheel,
12nd, slider bar, the 13rd, lever, the 14th, column, the 15th, handwheel second, the 16th, scale pan, the 17th, extension bar adding mechanism.
Detailed description of the invention
As depicted in figs. 1 and 2, a kind of strain direct shear apparatus is manually waited, including support stand 1 and being arranged on support stand 1
Horizontal loading system the 2nd, vertical pressue device the 3rd, shear box 4 and horizontal shear measurement apparatus 5, the bottom of shear box 4 is arranged
Having slider bar 12, slider bar 12 is slidably arranged on support stand 1, and described horizontal loading system 2 includes being arranged by guide rail
Horizontal pushing block 10 on support stand 1 and drive the handwheel 11 that horizontal pushing block 10 moves, horizontal pushing block by driving gear set
10 are connected with slider bar 12, and described vertical pressue device 3 includes that is placed on the pressure transmission cover plate 7 above sample in shear box 4
With a pressure transmission screw 6 being applied vertical pressure by force application mechanism band trend pressure transmission cover plate 7, the bottom of described pressure transmission screw 6 sets
Having hemispherical projections 8, described pressure transmission cover plate 7 is provided with the ball recess 9 matching with hemispherical projections 8.
A diameter of 10mm of described hemispherical projections 8, the degree of depth of described ball recess 9 is 4mm, and top diameter is 11mm,
Using the structure of this kind of size, pressure transmission screw 6 and pressure transmission cover plate 7 can being made to coordinate more tight, loading and off-load all easily operate.
The force application mechanism of described vertical pressue device 3 includes being arranged on the column 14 bottom support stand 1, is arranged on column
Lever 13 on 14 and handwheel second 15, be respectively arranged at two ends with scale pan 16 and extension bar adding mechanism 17 at lever 13, passes through
Put into the mass of Different Weight at scale pan 16 so that sample in shear box 4 for the extension bar adding mechanism 17 applies different big
The pressure of little vertical direction.
Claims (1)
1. manual grade strains a direct shear apparatus, including support stand (1) and the horizontal loading system being arranged on support stand (1)
(2), vertical pressue device (3), shear box (4) and horizontal shear measurement apparatus (5), the bottom of shear box (4) is provided with cunning
Dynamic frame (12), slider bar (12) is slidably arranged on support stand (1), and described horizontal loading system (2) includes passing through guide rail
The horizontal pushing block (10) being arranged on support stand (1) and the handwheel driving horizontal pushing block (10) to move by driving gear set
(11), horizontal pushing block (10) is connected with slider bar (12), it is characterised in that: described vertical pressue device (3) includes a placement
In shear box (4), the pressure transmission cover plate (7) above sample and one are applied vertically pressure by force application mechanism band trend pressure transmission cover plate (7)
The pressure transmission screw (6) of power, the bottom of described pressure transmission screw (6) is provided with hemispherical projections (8), and described pressure transmission cover plate (7) is provided with
The ball recess (9) matching with hemispherical projections (8), a diameter of 10mm of described hemispherical projections (8), described ball recess
(9) the degree of depth is 4mm, and top diameter is 11mm, and described force application mechanism includes the column being arranged on support stand (1) bottom
(14) lever (13), being arranged on column (14) and handwheel second (15), be respectively arranged at two ends with scale pan at lever (13)
(16) and extension bar adding mechanism (17), by putting into the mass of Different Weight in scale pan (16) so that extension bar loading machine
Sample in shear box (4) for the structure (17) applies the pressure of different size of vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410139777.6A CN103969130B (en) | 2014-04-09 | 2014-04-09 | A kind of manually grade strains direct shear apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410139777.6A CN103969130B (en) | 2014-04-09 | 2014-04-09 | A kind of manually grade strains direct shear apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103969130A CN103969130A (en) | 2014-08-06 |
| CN103969130B true CN103969130B (en) | 2016-11-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410139777.6A Expired - Fee Related CN103969130B (en) | 2014-04-09 | 2014-04-09 | A kind of manually grade strains direct shear apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103969130B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596867A (en) * | 2015-01-23 | 2015-05-06 | 长江三峡勘测研究院有限公司（武汉） | Novel double-wheel equal-strain direct shear apparatus |
| CN105606460A (en) * | 2015-12-22 | 2016-05-25 | 中南大学 | Contact surface equal-strain direct shear apparatus and sample preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202720162U (en) * | 2012-06-26 | 2013-02-06 | 浙江辰鑫机械设备有限公司 | Concrete test block compression-testing machine |
| CN203772658U (en) * | 2014-04-09 | 2014-08-13 | 洛阳理工学院 | Hand-operated equal-strain direct shear apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101163117B1 (en) * | 2010-02-26 | 2012-07-06 | 건국대학교 산학협력단 | Direct shear test apparatus |
-
2014
- 2014-04-09 CN CN201410139777.6A patent/CN103969130B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202720162U (en) * | 2012-06-26 | 2013-02-06 | 浙江辰鑫机械设备有限公司 | Concrete test block compression-testing machine |
| CN203772658U (en) * | 2014-04-09 | 2014-08-13 | 洛阳理工学院 | Hand-operated equal-strain direct shear apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 土的直剪试验缺陷探讨;刘建锋 等;《四川水力发电》;20050228;第24卷(第1期);第56－57页第4.1节 * |
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| Publication number | Publication date |
|---|---|
| CN103969130A (en) | 2014-08-06 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161109 Termination date: 20170409 |