CN101936847B - Adjustable bidirectional displacement detection mechanism for triaxial apparatus - Google Patents
Adjustable bidirectional displacement detection mechanism for triaxial apparatus Download PDFInfo
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- CN101936847B CN101936847B CN2010102382888A CN201010238288A CN101936847B CN 101936847 B CN101936847 B CN 101936847B CN 2010102382888 A CN2010102382888 A CN 2010102382888A CN 201010238288 A CN201010238288 A CN 201010238288A CN 101936847 B CN101936847 B CN 101936847B
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Abstract
The invention relates to an adjustable bidirectional displacement detection mechanism for a triaxial apparatus. A vertical post on one side of a portal frame is provided with a displacement sensor rack capable of adjusting height, and the displacement sensor rack is composed of a plane position option board, a distance adjustment plate and a detection direction adjustment plate aiming at a displacement sensor, wherein the plane position option board is axially connected with the distance adjustment plate by vertical double-screw bolts and nuts, the distance adjustment plate is provided with a damp positioning structure, the end portions of the distance adjustment plate, which correspond to the detection direction adjustment plate, are respectively provided with positioning central spindles and central holes for separation and butt-joint with the detection direction adjustment plate, and are further respectively provided with horizontal positioning grooves and bulges for keeping the horizontal butt-joint of the distance adjustment plate and the detection direction adjustment plate, each positioning central spindle is sleeved with a reset spring acting on the detection direction adjustment plate, and a vertical forcing rod is provided with an upper position indicating plate. The mechanism enlarges the use function and the application range of the triaxial apparatus, and can realize the vertical reversing and the vertical height and horizontal direction adjustment of the displacement sensor without using any tools.
Description
Technical field
The invention belongs to the geotechnical mechanics test apparatus, particularly relate to a kind of bidirectional displacement adjusted testing agency of triaxial apparatus.
Background technology
Triaxial compression test is a kind of common method of measuring the shearing strength of soil; Usually be installed in the triaxial cell one by one with three to four cylindrical samples; Under the constant wall pressure effect of difference, applying axial force compresses (shearing) and makes sample produce distortion until destruction; To measure a kind of mechanical test project of its shearing strength, axial displacement is a main test parameters in the middle of the triaxial test.
The primary structure of displacement detecting comprise the vertical pressure rod that is installed under the dynamometry steel loop and horizontal support, by the jackscrew tightening in the displacement transducer of horizontal support annular ledge, be fixed in the location mark plate on top cover surface, triaxial cell and support pressure chamber's up-down main shaft of triaxial cell.The gauge head of displacement transducer contacts with the location mark plate.
When detecting axial displacement, vertical pressure rod engages and the position relative fixed with the soil body sample top of triaxial cell through adding pressure cap, and triaxial cell and sample be with the rising of pressure chamber's up-down main shaft, and soil body sample is stressed and be compressed distortion until destruction.The axial displacement of up-down main shaft in pressure chamber's in the compression test process detected and converted into electric signal through the location mark plate by displacement transducer.
Can find out that from above-mentioned compression test process it is from bottom to top that existing axial displacement detects basic structure loading direction of its axial force for soil body sample.If change the loading direction of axial force, promptly soil body sample is imposed top-down axial force and carry out displacement detecting by vertical pressure rod, the displacement transducer detection side of then above-mentioned displacement detecting machine structure is to obviously not adapting to.
Summary of the invention
The present invention is for the displacement transducer direction that solves the axial displacement testing agency that has triaxial apparatus now can not adapt to the technical matters that top-down axial force is carried out compression test, and discloses a kind of bidirectional displacement adjusted testing agency of triaxial apparatus.
The present invention takes following technical scheme for realizing above-mentioned purpose: the bidirectional displacement the adjusted testing agency of this triaxial apparatus comprises triaxial apparatus portal frame, vertical pressure rod; Pressure chamber and up-down main shaft thereof, displacement transducer and be fixed in the location mark plate on pressure chamber top cover surface; Characteristic is; Portal frame one heel post is provided with the adjustable displacement sensor bracket of high and low position; Said displacement sensor bracket is connected and composed to the adjustment plate by planimetric position option board, distance adjustment plate and the detection side to displacement transducer successively; Said planimetric position option board is set in portal frame one heel post and is that the axle horizontal direction is rotated with this column, and said detection side is fixed with the displacement transducer of vertical state to the adjustment plate; Said planimetric position option board is respectively equipped with the vertical stud of back shaft connection and the convex and the spill axle bed of nut with the corresponding end of distance adjustment plate; Convex and spill axle bed are provided with the damping location structure of distance adjustment plate; Said distance adjustment plate engages to the corresponding butt-end of adjustment plate with the detection side; The both ends that butt joint engages are provided with locator mandrel and heart hole, location respectively; Also be respectively equipped with and keep the detection side to dock horizontal location groove and the horizontal location projection that engages with distance adjustment plate level to the adjustment plate; Locator mandrel is set with and acts on the detection side to adjusting the back-moving spring that plate makes it end and distance adjustment plate end fluid-tight engagement, and the upper end of said vertical pressure rod is provided with the position dial plate.
The present invention can also take following technical measures:
Said displacement sensor bracket high and low position adjusting mechanism reaches the adjustment swivel nut, compression spring and the compression spring locating piece that are threaded with it by the external thread bearing and constitutes; The external thread bearing is set in portal frame one heel post and is provided with and makes it the jackscrew of tightening in column; The planimetric position option board that is set in the displacement sensor bracket of column is supported in the adjustment swivel nut; Compression spring is set in column and is supported in the planimetric position option board, and the compression spring upper end engages with the compression spring locating piece of tightening in column.
Said planimetric position option board is provided with the convex axle bed; Distance adjustment plate is provided with the spill axle bed that is connected mutually with planimetric position option board convex axle bed; The upper and lower side of planimetric position option board convex axle bed axis hole is along the locating slot that is respectively equipped with spring washer, and the spring washer in each locating slot engages with a corresponding surface of distance adjustment plate spill axle bed respectively and constitutes apart from the damping location structure of adjusting plate.
Said detection side is provided with the fixed displacement sensor and makes it the groove and the buckle that is anchored on the groove bead for the vertical state to the end of adjustment plate.
Beneficial effect of the present invention and advantage are: the displacement sensor bracket that in this bidirectional displacement testing agency, is made up of to the adjustment plate planimetric position option board, distance adjustment plate and detection side; Make this support have following function; Planimetric position option board and distance adjustment plate can carry out respectively moving around axial plane; Two plates match and can adjust the planimetric position of displacement transducer; This adjustment can be satisfied this mechanism needs to change the condition of work of displacement transducer planimetric position because of loading mode (a kind of is to wait strain, and another kind is an equal stress) with the different of loading system, and then can guarantee the needs that two kinds of loading modes accurately detect.Distance adjustment plate has the damping location structure that is made up of spring washer and locating slot thereof; Adjustment through vertical stud and nut can make spring washer have suitable tension force; This tension force can guarantee can under not by the situation of any instrument, carry out apart from the adjustment of adjustment plate level position, also can satisfy the relative fixed that adjustment back distance is adjusted the plate level position.The detection side is that axle is rotated motion with the locator mandrel to the adjustment plate; This effect limit detection side who rotatablely moves in trapezoidal detent and projection can only stop or being positioned horizontal level to the adjustment plate, promptly displacement transducer guarantee under the condition of its verticality with the locator mandrel be axle be detection side up or down to adjustment.When the detection side of displacement transducer when being adjusted into upwards, under the cooperation of last position dial plate, can carry out the displacement detecting of axial force from top to bottom to soil body sample.Make the detection side to adjustment plate axial location and the function that resets because locator mandrel and back-moving spring thereof have, so the detection side is the completion that not by the situation of any instrument under can link up with respect to the folding of distance adjustment plate with rotatablely moving to the adjustment plate.The present invention has changed existing triaxial apparatus can only carry out the present situation that monodisplacement detects to soil body sample on a fixed plane position and a vertical direction; The functions of use and the range of application of existing triaxial apparatus have been enlarged; Have simple to operate, the outstanding advantage that can carry out vertical switching-over, vertical height and the level orientation adjustment of displacement transducer under not by the situation of any instrument easily.
Description of drawings
Accompanying drawing 1 is the example structure synoptic diagram.
Accompanying drawing 3 is Fig. 2 diagrammatic cross-sections.
Accompanying drawing 4 is that Fig. 2 A is to view.
Accompanying drawing 5 is displacement sensor bracket functional schematics.
Accompanying drawing 6 is that displacement transducer changes the detection side to synoptic diagram.
Mark among the figure: 1 left side column, 2 compression spring locating pieces, 3 compression springs, 4 planimetric position option boards, 5 adjustment swivel nuts; 6 external thread bearings, 6-1 jackscrew, 7 pressure chambers, 8 up-down main shafts, 9 location mark plates; 10 displacement transducers, 11 detection sides are to adjustment plate, 11-1 buckle, 11-2 locator mandrel, 11-3 set nut; 11-4 horizontal location groove, 12 distance adjustment plates, heart hole, 12-1 location, 12-2 horizontal location projection, 13 vertical bolts; The 13-1 nut, 13-2 spring washer, position dial plate on 14,15 vertical pressure rods, 16 back-moving springs.
Embodiment
Further specify the present invention below in conjunction with embodiment and accompanying drawing thereof.
Embodiment as shown in Figure 1; Originally can adjust bidirectional displacement testing agency is a kind of improvement to existing triaxial apparatus displacement detecting mechanism; Comprise triaxial apparatus portal frame, vertical pressure rod 15, pressure chamber 7 and up-down main shaft 8 thereof, displacement transducer 10 and be fixed in the location mark plate 9 on top cover surface, pressure chamber.Displacement transducer 10 detection sides among Fig. 1 change to the up-down that is adapted to from up-down main shaft 8.
Of the present invention being characterized by: the left side column 1 of portal frame is provided with adjustable displacement sensor bracket of high and low position and the last position dial plate 14 that is arranged at vertical pressure rod 15 upper ends.
Like Fig. 2,3, shown in 4, displacement sensor bracket is connected and composed to adjustment plate 11 by planimetric position option board 4, distance adjustment plate 12 and the detection side to displacement transducer 10 successively.Its median-plane location option board 4 is set in portal frame shown in Figure 1 left side column 1 and is that the axle horizontal direction is rotated with this column, the detection side to adjustment plate 11 by the fixing displacement transducer 10 of vertical state of end groove that is provided with and the buckle 11-1 that is anchored on the groove bead.
Planimetric position option board 4 is respectively equipped with the vertical stud 13 of back shaft connection and the axle bed of nut 13-1 with distance adjustment plate 12 corresponding ends; Be that planimetric position option board 4 is provided with the convex axle bed, distance adjustment plate 12 is provided with the spill axle bed that is complementary with planimetric position option board convex axle bed.The upper and lower side of planimetric position option board 4 convex axle bed axis holes is along the locating slot that is respectively equipped with spring washer 13-2, and the spring washer 13-2 in each locating slot engages with a corresponding surface of distance adjustment plate 12 spill axle beds respectively and constitutes apart from the damping location structure of adjusting plate.
As shown in Figure 4; For keep the detection side to adjustment plate 11 and distance adjust plate 12 all the time level dock joint; To the end that 11 butt joints of adjustment plate engage horizontal location groove 11-4 is set the detection side, the end that engages in 12 butt joints of distance adjustment plate is provided with the horizontal location projection 12-2 that is connected mutually with horizontal location groove 11-4.Being shaped as of the horizontal location groove 11-4 of embodiment and horizontal location projection 12-2 is symmetrical trapezoidal.
Like Fig. 5, shown in 6; Change displacement transducer 10 detection sides to the time; The detection side will press any direction rotation of four-headed arrow i among Fig. 5 around locator mandrel 11-2 to adjustment plate 11; This moment horizontal location groove 11-4 will contact with the corner angle of horizontal location projection 122 symmetries and by tight linking status transition to state that can Rotate 180 °, and automatic immediately the engagement becomes tight linking state behind Rotate 180 °, makes the displacement transducer 10 after the switching-over can continue to keep vertical.Displacement transducer 10 its gauge heads after the switching-over will contact with last position dial plate 14.
Below referring to Fig. 1 the high and low position adjusting mechanism of displacement sensor bracket is described.
As shown in Figure 1, the high and low position adjusting mechanism of displacement sensor bracket reaches the adjustment swivel nut 5, compression spring 3 and the compression spring locating piece 2 that are threaded with it by external thread bearing 6 and constitutes.
External thread bearing 6 among the embodiment and compression spring locating piece 2 can have the basic high and low position of confirming displacement sensor bracket under the situation of suitable pressure at compression spring, generally should make the mid point of displacement sensor bracket between top offset dial plate 14 and displacement dial plate 9.Adjustment swivel nut 5 can be realized the accurate adjustment of sensor leading zero's.
Claims (4)
1. the bidirectional displacement adjusted of triaxial apparatus testing agency; Comprise triaxial apparatus portal frame, vertical pressure rod, pressure chamber and up-down main shaft, displacement transducer and be fixed in the surperficial location mark plate of pressure chamber's top cover; It is characterized in that: portal frame one heel post is provided with the adjustable displacement sensor bracket of high and low position; Said displacement sensor bracket is connected and composed to the adjustment plate by planimetric position option board, distance adjustment plate and the detection side to displacement transducer successively; Said planimetric position option board is set in portal frame one heel post and is that the axle horizontal direction is rotated with this column, and said detection side is fixed with the displacement transducer of vertical state to the adjustment plate; Said planimetric position option board is respectively equipped with the vertical stud of back shaft connection and the convex and the spill axle bed of nut with the corresponding end of distance adjustment plate; Convex and spill axle bed are provided with the damping location structure of distance adjustment plate; Said distance adjustment plate engages to the corresponding butt-end of adjustment plate with the detection side; The both ends that butt joint engages are provided with locator mandrel and heart hole, location respectively; Also be respectively equipped with and keep the detection side to dock horizontal location groove and the horizontal location projection that engages with distance adjustment plate level to the adjustment plate; Locator mandrel is set with and acts on the detection side to adjusting the back-moving spring that plate makes it end and distance adjustment plate end fluid-tight engagement, and the upper end of said vertical pressure rod is provided with the position dial plate.
2. the bidirectional displacement testing agency that adjusts according to claim 1; It is characterized in that: said displacement sensor bracket high and low position adjusting mechanism reaches the adjustment swivel nut, compression spring and the compression spring locating piece that are threaded with it by the external thread bearing and constitutes; The external thread bearing is set in portal frame one heel post and is provided with and makes it the jackscrew of tightening in column; The planimetric position option board that is set in the displacement sensor bracket of column is supported in the adjustment swivel nut; Compression spring is set in column and is supported in the planimetric position option board, and the compression spring upper end engages with the compression spring locating piece of tightening in column.
3. the bidirectional displacement testing agency that adjusts according to claim 1; It is characterized in that: said planimetric position option board is provided with the convex axle bed; Distance adjustment plate is provided with the spill axle bed that is complementary with planimetric position option board convex axle bed; The upper and lower side of planimetric position option board convex axle bed axis hole is along the locating slot that is respectively equipped with spring washer, and the spring washer in each locating slot engages with a corresponding surface of distance adjustment plate spill axle bed respectively and constitutes apart from the damping location structure of adjusting plate.
4. the bidirectional displacement testing agency that adjusts according to claim 1 is characterized in that: said detection side is provided with the fixed displacement sensor and makes it the groove and the buckle that is anchored on the groove bead for the vertical state to the end of adjustment plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102382888A CN101936847B (en) | 2010-07-28 | 2010-07-28 | Adjustable bidirectional displacement detection mechanism for triaxial apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102382888A CN101936847B (en) | 2010-07-28 | 2010-07-28 | Adjustable bidirectional displacement detection mechanism for triaxial apparatus |
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| CN101936847A CN101936847A (en) | 2011-01-05 |
| CN101936847B true CN101936847B (en) | 2012-06-27 |
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| CN2010102382888A Active CN101936847B (en) | 2010-07-28 | 2010-07-28 | Adjustable bidirectional displacement detection mechanism for triaxial apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104330247A (en) * | 2014-09-20 | 2015-02-04 | 宁国市华晟塑胶制品有限公司 | Product automatic detection apparatus |
| CN106271879B (en) * | 2016-09-07 | 2019-04-26 | 深圳市仕兴鸿精密机械设备有限公司 | It is a kind of two-way adjustable close to switch |
| CN106353178B (en) * | 2016-09-28 | 2019-02-15 | 攀钢集团研究院有限公司 | A kind of Gleeble loading tool being less than graphite flake and tantalum piece radius suitable for radius of specimen |
| CN107356484B (en) * | 2017-08-28 | 2023-08-11 | 石家庄铁道大学 | Sample sagging correction device in soil triaxial experiment instrument and application method thereof |
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| CN86210082U (en) * | 1986-12-13 | 1987-10-07 | 清华大学 | Multi-functional hydraulic three-axis device |
| JP3689763B2 (en) * | 1997-01-29 | 2005-08-31 | 株式会社竹中工務店 | S wave generation mechanism in large triaxial cell |
| US6918306B1 (en) * | 2003-09-08 | 2005-07-19 | The United States Of America As Represented By The Secretary Of The Navy | Adjustable flexure loading apparatus for testing long span beams |
| CN2643315Y (en) * | 2003-09-22 | 2004-09-22 | 中国科学院力学研究所 | A novel triaxial equipment for soil dynamics |
| CN201754134U (en) * | 2010-07-28 | 2011-03-02 | 铁道第三勘察设计院集团有限公司 | Bidirectional-displacement adjustable detecting mechanism of tri-axial apparatus |
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Address after: 300251 No. 10 Minjiang Road, Minquan gate, Tianjin, Hebei District Patentee after: CHINA RAILWAY DESIGN Corp. Address before: 300251 No. 10 Minjiang Road, Minquan gate, Tianjin, Hebei District Patentee before: THE THIRD RAILWAY SURVEY AND DESIGN INSTITUTE Group Corp. |
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Effective date of registration: 20211223 Address after: 300251 No. 10 Minjiang Road, Minquan gate, Tianjin, Hebei District Patentee after: CHINA RAILWAY DESIGN Corp. Patentee after: Creec (Tianjin) Testing Technology Co.,Ltd. Address before: 300251 No. 10 Minjiang Road, Minquan gate, Tianjin, Hebei District Patentee before: CHINA RAILWAY DESIGN Corp. |
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