CN104596867A - Novel double-wheel equal-strain direct shear apparatus - Google Patents
Novel double-wheel equal-strain direct shear apparatus Download PDFInfo
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- CN104596867A CN104596867A CN201510035429.9A CN201510035429A CN104596867A CN 104596867 A CN104596867 A CN 104596867A CN 201510035429 A CN201510035429 A CN 201510035429A CN 104596867 A CN104596867 A CN 104596867A
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- 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 invention discloses a novel double-wheel equal-strain direct shear apparatus. The novel double-wheel equal-strain direct shear apparatus comprises a seat as well as a horizontal push seat device, a vertical loading device, a lower shear box and a vertical displacement dial gauge which are arranged on the seat, wherein an upper shear box is arranged on the lower shear box, and the front end of the upper shear box is connected with a force measurement ring of the vertical displacement dial gauge; the horizontal push seat device comprises a push block connected with the lower shear box, a hand wheel is connected with the push block through a transmission mechanism and drives the push block to translate, and a vertical deformation dial gauge is arranged on the push block; the vertical loading device comprises a loading frame connected with the upper shear box, a linkage device is additionally arranged below the seat, corresponding to the hand wheel, the drive end of the linkage device is connected with the hand wheel of the horizontal push seat device through a belt wheel mechanism, and the output end of the linkage device is connected with the loading frame of the vertical loading device. The novel double-wheel equal-strain direct shear apparatus disclosed by the invention ensures that a loading rod always loads a vertical load on the shear boxes in the whole shear test process, and the obtained soil shear strength test value is more accurate.
Description
Technical field
The present invention relates to engineering geology geotechnique detection technique field, be specifically related to the strain direct shear apparatuses such as a kind of novel two-wheel.
Background technology
In engineering geology soil test, usual application engineering geological mapping geotechnique laboratory experiment measures the shear stress of soil, and calculates soil classifiction (internalfrictionangleφ and cohesion force C) according to Coulomb law.Deng a kind of common instrument that strain direct shear apparatus is experimental determination soil classifiction.At present, there is certain defect in the strain direct shear apparatus such as existing: when shaking handwheel in process of the test in structural design, shear box can slowly movement forward, and the load bar (being connected with lever below) on shear box rotates, not horizontal forward movement together with shear box, this just causes load bar applies is not Vertical Load, but eccentric load, in the computation process of shear stress, do not consider that the component of eccentric load (namely enablely measures this component size, also the computing formula be not suitable for is revised detection data), thus the native shearing strength value obtained there will be relatively large deviation.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of and effectively can measure the strain direct shear apparatuses such as the novel two-wheel of soil classifiction.
The present invention for the adopted technical scheme that solves the problem is: the strain such as a kind of novel two-wheel direct shear apparatus, comprise support and be arranged on Level Promoting base device, vertically loading system, down cut box and the vertical movement dial gauge on support, down cut box is provided with shear box, and the front end of upper shear box connects with the ring of measuring one's own ability of vertical movement dial gauge; Described Level Promoting base device comprises the pushing block be connected with down cut box, and handwheel is connected with pushing block by gear train, drives pushing block translation, pushing block is provided with vertical deformation dial gauge; Described vertical loading system comprises the loading framework be connected with upper shear box, below support, correspond to handwheel have additional linkage, the drive end of linkage is connected by the handwheel of belt wheel mechanism with Level Promoting base device, and the output terminal of link gear is connected with the loading framework of vertical loading system.
By such scheme, described linkage comprises the belt pulley being installed in side below support, and belt pulley is connected with handwheel by belt, handwheel is arranged or connects driving pulley; Belt pulley below described support is connected with gear by transmission shaft, and wheel and rack is meshed; One end of described tooth bar connects firmly mutually with loading framework.
By such scheme, described belt is synchronous cog belt; Described belt pulley is profile of tooth belt wheel.
By such scheme, described transmission shaft is through a sleeve pipe; Described sleeve pipe is fixedly connected with support by fixing pole.
By such scheme, described loading framework comprises entablature, load bar and sill, and entablature two ends are connected with sill two ends by load bar; Described sill is connected with tooth bar one end; Described entablature and the pressure transmission screw phase configuration be installed in above shear box.
By such scheme, described vertical loading system also comprises the lever be connected with sill, and described lever two ends are respectively arranged with scale pan and balance bob.
By such scheme, described sill is connected with a vertical bar, and the top of vertical bar is connected with ball, and ball is stuck in the guide groove that is arranged on support, and vertical bar is moved left and right with loading framework by ball.
The present invention adopts linkage, while upper shear box moves horizontally, drive vertical loading system to move, ensure that load bar is applied to, shear box is Vertical Load, instead of eccentric load, test findings deviation is little, obtains soil classifiction trial value more accurate; Meanwhile, this apparatus structure advantages of simple, is applicable to the laboratory of testing agency etc. in one's power of Ge great institution of higher learning, Research Center.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention's specific embodiment.
Fig. 2 is the structural representation of linkage in the present embodiment.
Fig. 3 is rack pinion structural representation.
Wherein: 1, handwheel; 2, belt; 3, belt pulley; 4, upper shear box; 5, down cut box; 6, load bar; 7, vertical movement dial gauge; 8, gear; 9, transmission shaft; 10, tooth bar; 11, entablature; 12, lever; 13, sill; 14, support; 15, balance bob; 16, scale pan; 17, pushing block; 18, pressure transmission screw; 19, vertical deformation dial gauge; 20, vertical bar; 21, sleeve pipe; 22, fixing pole.
Embodiment
For a better understanding of the present invention, below in conjunction with accompanying drawing, the present invention is further illustrated.
The strain such as one novel two-wheel as shown in Figure 1 direct shear apparatus, comprise support 14 and be arranged on Level Promoting base device, vertically loading system, down cut box 5 and the vertical movement dial gauge 7 on support 14, on down cut box, 5 are provided with shear box 4, and the front end of upper shear box 4 connects with the ring of measuring one's own ability of vertical movement dial gauge 7; Described Level Promoting base device comprises the pushing block 17 be connected with down cut box 5, and handwheel 1 is connected with pushing block 17 by gear train, drives pushing block 17 translation, pushing block 17 is provided with vertical deformation dial gauge 19; Described vertical loading system comprises the loading framework be connected with upper shear box 4, below support 14, correspond to handwheel 1 have additional linkage, the drive end of linkage is connected with the handwheel 1 of Level Promoting base device by belt wheel mechanism, and the output terminal of link gear is connected with the loading framework of vertical loading system.
Wherein, linkage comprises the belt pulley 3 being installed in side below support 14, belt pulley 3 is connected with handwheel 1 by belt 2, handwheel 1 is arranged or connects driving pulley, belt pulley 3 below support 14 is connected with gear 8 by transmission shaft 9, gear 8 is meshed with tooth bar 10, and one end of tooth bar 10 connects firmly mutually with loading framework; Transmission shaft 9 is through a sleeve pipe 21, and sleeve pipe 21 is fixedly connected with support 14 by fixing pole 22; Belt 2 is synchronous cog belt, and belt pulley 3 is profile of tooth belt wheel; Loading framework comprises entablature 11, load bar 6 and sill 13, and entablature 11 two ends are connected with sill 13 two ends by load bar 6; Described sill 13 is connected with tooth bar 10 one end; Sill 13 also connects a vertical bar 20, and the top of vertical bar 20 is connected with ball, and ball is stuck in the guide groove that is arranged on support 14, and vertical bar 20 is moved left and right with loading framework by ball; Described entablature 11 and pressure transmission screw 18 phase configuration be installed in above shear box 4; Vertical loading system also comprises the lever 12 be connected with sill 13; Described lever 12 two ends are respectively arranged with scale pan 16 and balance bob 15.
Principle of work of the present invention is: when shearing the handwheel 1 on gear train and rotating, pushing block 17 promotes down cut box 5 and slowly moves forward, handwheel 1 is with movable belt pulley 3 to rotate by belt 2 simultaneously, transmission shaft 9 rotates thereupon and is with carry-over bar 10 to move by gear 8, then promote the loading framework horizontal forward slow movement be together added on shear box 4, ensure that the Vertical Load that the load be added on shear box 4 is always real.
Before testing, carry out following preliminary work:
First, direct shear apparatus is steadily positioned on experiment porch, tightens the bolt on sill 13, make loading framework and lever 12 basicly stable; Check whether lever 12 both sides have to rub mutually, whether gear 8 engages with tooth bar 10; Adjustment balance bob 15, after lever 12 is in a basic balance and tight balance bob 15 and cap, bolt of outwarding winding, fully throws off with lever 12, and in the middle of column lever 12 being in support 14; Shear box 4 in inspection, rolling steel balls is just being put and is being ensured the flexible no-sundries jam that rolls; In upper shear box 4, add soil sample by code, put permeable stone and pressure transmission plate well, make the pressure transmission screw 18 on loading framework aim at steel ball center; Shake handwheel 1, make the front end of shear box 4 just contact ring of measuring one's own ability, vertical deformation dial gauge 19 is to zero, simultaneously by vertical movement dial gauge 7 to zero, turn pressure transmission screw 18, can be slightly high without precompressed if raise lever 12(sample in right amount, sinks in order to avoid add rear soil sample and lever 12 is too tilted).
After preliminary work completes, start to carry out testing inspection: first apply vertical load (increase by actual conditions or reduce counterweight) by actual demands of engineering, until soil sample stand under load or after fixing, two fixed pins back-outed on upper shear box 4, at the uniform velocity shake handwheel 1 to shear, and be with dynamic load bar 6 to move together; Treat that vertical movement dial gauge 7 pointer does not readvance, or when pointer turns round a little, write down the numerical value of vertical movement dial gauge 7; After shearing terminates, exit and shear and lay down vertical load (extracting pressure transmission screw 18), device is set back.
Claims (7)
1. the strain such as novel two-wheel direct shear apparatus, comprise support and be arranged on Level Promoting base device, vertically loading system, down cut box and the vertical movement dial gauge on support, down cut box is provided with shear box, and the front end of upper shear box connects with the ring of measuring one's own ability of vertical movement dial gauge; Described Level Promoting base device comprises the pushing block be connected with down cut box, and handwheel is connected with pushing block by gear train, drives pushing block translation, pushing block is provided with vertical deformation dial gauge; Described vertical loading system comprises the loading framework be connected with upper shear box, it is characterized in that, below support, correspond to handwheel have additional linkage, the drive end of linkage is connected by the handwheel of belt wheel mechanism with Level Promoting base device, and the output terminal of link gear is connected with the loading framework of vertical loading system.
2. the strain such as novel two-wheel as claimed in claim 1 direct shear apparatus, it is characterized in that, described linkage comprises the belt pulley being installed in side below support, and belt pulley is connected with handwheel by belt, handwheel is arranged or connects driving pulley; Belt pulley below described support is connected with gear by transmission shaft, and wheel and rack is meshed; One end of described tooth bar connects firmly mutually with loading framework.
3. the strain such as novel two-wheel as claimed in claim 2 direct shear apparatus, it is characterized in that, described belt is synchronous cog belt; Described belt pulley is profile of tooth belt wheel.
4. the strain such as novel two-wheel as claimed in claim 2 direct shear apparatus, is characterized in that, described transmission shaft is through a sleeve pipe; Described sleeve pipe is fixedly connected with support by fixing pole.
5. the strain such as the novel two-wheel as described in claim 1,2,3 or 4 direct shear apparatus, it is characterized in that, described loading framework comprises entablature, load bar and sill, and entablature two ends are connected with sill two ends by load bar; Described sill is connected with tooth bar one end; Described entablature and the pressure transmission screw phase configuration be installed in above shear box.
6. the strain such as novel two-wheel as claimed in claim 5 direct shear apparatus, it is characterized in that, described vertical loading system also comprises the lever be connected with sill; Described lever two ends are respectively arranged with scale pan and balance bob.
7. the strain such as novel two-wheel as claimed in claim 5 direct shear apparatus, it is characterized in that, described sill is connected with a vertical bar, and the top of vertical bar is connected with ball, ball is stuck in the guide groove that is arranged on support, and vertical bar is moved left and right with loading framework by ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510035429.9A CN104596867A (en) | 2015-01-23 | 2015-01-23 | Novel double-wheel equal-strain direct shear apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510035429.9A CN104596867A (en) | 2015-01-23 | 2015-01-23 | Novel double-wheel equal-strain direct shear apparatus |
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| CN104596867A true CN104596867A (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510035429.9A Pending CN104596867A (en) | 2015-01-23 | 2015-01-23 | Novel double-wheel equal-strain direct shear apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067453A (en) * | 2015-07-08 | 2015-11-18 | 浙江土工仪器制造有限公司 | Ring shear apparatus for circular-ring-shaped soil sample |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6003382A (en) * | 1997-06-25 | 1999-12-21 | The Penn State Research Foundation | Computer control shear cell tester |
| JP2004257892A (en) * | 2003-02-26 | 2004-09-16 | Sumitomo Rubber Ind Ltd | Snow characteristic measuring apparatus |
| CN2653485Y (en) * | 2003-10-16 | 2004-11-03 | 徐进 | Coarse soil direct shear instrument |
| JP2008241247A (en) * | 2007-03-23 | 2008-10-09 | Chugoku Electric Power Co Inc:The | Shear tester for rock-bed discontinuous surface |
| CN201145658Y (en) * | 2007-07-26 | 2008-11-05 | 河海大学 | Portable on site and indoor dual-purpose direct shear test instrument |
| CN103969130A (en) * | 2014-04-09 | 2014-08-06 | 洛阳理工学院 | Manual equal strain direct shear apparatus |
| CN204359616U (en) * | 2015-01-23 | 2015-05-27 | 长江三峡勘测研究院有限公司（武汉） | The strain such as novel two-wheel direct shear apparatus |
-
2015
- 2015-01-23 CN CN201510035429.9A patent/CN104596867A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6003382A (en) * | 1997-06-25 | 1999-12-21 | The Penn State Research Foundation | Computer control shear cell tester |
| JP2004257892A (en) * | 2003-02-26 | 2004-09-16 | Sumitomo Rubber Ind Ltd | Snow characteristic measuring apparatus |
| CN2653485Y (en) * | 2003-10-16 | 2004-11-03 | 徐进 | Coarse soil direct shear instrument |
| JP2008241247A (en) * | 2007-03-23 | 2008-10-09 | Chugoku Electric Power Co Inc:The | Shear tester for rock-bed discontinuous surface |
| CN201145658Y (en) * | 2007-07-26 | 2008-11-05 | 河海大学 | Portable on site and indoor dual-purpose direct shear test instrument |
| CN103969130A (en) * | 2014-04-09 | 2014-08-06 | 洛阳理工学院 | Manual equal strain direct shear apparatus |
| CN204359616U (en) * | 2015-01-23 | 2015-05-27 | 长江三峡勘测研究院有限公司（武汉） | The strain such as novel two-wheel direct shear apparatus |
Non-Patent Citations (5)
| Title |
|---|
| 刘斯宏等: "便携式现场和室内两用直剪仪的研制", 《岩土工程学报》 * |
| 徐进等: "新型粗粒土直剪试验机研制", 《四川大学学报（工程科学版）》 * |
| 章一新等: "《中华人民共和国国家标准》", 1 November 1997 * |
| 董云等: "土石混合料室内大型直剪试验的改进研究", 《岩土工程学报》 * |
| 阮红风等: "应力式直剪仪在小剪应力下的精度提高技术", 《实验技术与管理》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067453A (en) * | 2015-07-08 | 2015-11-18 | 浙江土工仪器制造有限公司 | Ring shear apparatus for circular-ring-shaped soil sample |
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Application publication date: 20150506 |
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