CN109540651A - A kind of all kinds of nonplanar assembled self-balancing original positions of adaptation pull-out test device - Google Patents
A kind of all kinds of nonplanar assembled self-balancing original positions of adaptation pull-out test device Download PDFInfo
- Publication number
- CN109540651A CN109540651A CN201811525351.9A CN201811525351A CN109540651A CN 109540651 A CN109540651 A CN 109540651A CN 201811525351 A CN201811525351 A CN 201811525351A CN 109540651 A CN109540651 A CN 109540651A
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- column
- balancing
- self
- drawing bar
- 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.)
- Granted
Links
- 238000007586 pull-out test Methods 0.000 title claims abstract description 15
- 230000006978 adaptation Effects 0.000 title claims abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims abstract description 44
- 238000005259 measurement Methods 0.000 claims abstract description 26
- 238000003825 pressing Methods 0.000 claims abstract description 17
- 239000003208 petroleum Substances 0.000 description 6
- 238000004080 punching Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000005493 welding type Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Classifications
-
- 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
- G01N3/02—Details
-
- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0244—Tests performed "in situ" or after "in situ" use
Landscapes
- 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)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention discloses a kind of all kinds of nonplanar assembled self-balancing original positions of adaptation pull-out test device, including self-balancing bearing plate, drawing oil cylinder, force snesor, drawing bar, drawing bar fixture nut, displacement measurement extension rod, displacement sensor and column, column includes column main body and universal bearing, universal bearing is set on the bottom surface of column, self-balancing bearing plate is detachably set on column, pressing plate through-hole and drawing oil cylinder fixing sleeve are provided on self-balancing bearing plate, drawing bar is successively arranged in force snesor, drawing oil cylinder and pressing plate through-hole, drawing bar fixture nut is set to the upper end of drawing bar and abuts against with force snesor, displacement measurement extension rod is connect with drawing bar, displacement sensor is set to displacement measurement extension rod, the present invention has easy to carry, itself remaining deformation is smaller and the more accurate advantage of experimental result, this Invention adapts to all kinds of non-planar of scene, such as cambered surface or rugged flat surface.
Description
Technical field
The present invention relates to built-in fitting pull-out test technical fields, adapt to all kinds of nonplanar assembleds more particularly to a kind of
Self-balancing original position pull-out test device.
Background technique
In modern reinforced concrete works, built-in fitting is widely used, and the mechanics properties testing of built-in fitting also occurs more
It is require more.Particularly, the pre-buried channel flow in Subway Tunnel Lining due to its load-bearing operating condition it is complex, to pre-buried channel flow
Mechanical property requirements it is higher, the especially tension strength in anchor of pre-buried channel flow, it is necessary to drawing examination be carried out to pre-buried channel flow in advance
It tests to determine its pull-out ultimate capacity, currently, the device for carrying out pull-out test in situ to the pre-buried channel flow in subway tunnel is mainly adopted
With the loading method of self-balancing, namely use gate-type or four-column type self balancing device, drawing then is carried out with punching jack,
Existing self-balancing draw-off gear mainly uses whole welding type, and such draw-off gear has the disadvantage in that one, whole welding type
It is not readily portable；If two, component supporting surface is cambered surface or other are non-planar, self-balancing power transmission column is only with support face contact
Point contact or line contact, the form contacted with supporting surface point contact or line easily causes the uneven stress of force-transmitting pole, after long-time service
Device itself remaining deformation is larger, influences the accuracy of its test result, and it is all kinds of non-planar can not to adapt to cambered surface etc..
Summary of the invention
In view of this, long-term cooperation has conduit, the height of different radians the purpose of the present invention is to provide a kind of easy to carry
Itself remaining deformation is smaller after the component use of low different platform, and adaptation cambered surface etc. is all kinds of non-planar, and experimental result is more quasi-
True assembled self-balancing original position draw-off gear.
In order to achieve the above objectives, solution of the invention is:
All kinds of nonplanar assembled self-balancing original positions of a kind of adaptation pull-out test device, it is characterised in that: including certainly flat
Weigh bearing plate, drawing oil cylinder, force snesor, drawing bar, drawing bar fixture nut, displacement measurement extension rod displacement sensor and length
Adjustable column is spent, the column includes column main body and the universal bearing, and the column main body is vertically arranged, and described ten thousand
It is detachably set to support on the bottom surface of the column, the self-balancing bearing plate is detachably set on the column, institute
It states and is provided with pressing plate through-hole and drawing oil cylinder fixing sleeve on self-balancing bearing plate, the drawing oil cylinder fixing sleeve is located at the pressing plate
The top of through-hole, the pressing plate through-hole and the coaxial setting of drawing oil cylinder fixing sleeve, the drawing oil cylinder and the drawing oil
Cylinder fixing sleeve is fixedly connected, and the force snesor is movably set in the top of the drawing oil cylinder, and the drawing bar is arranged in institute
Force snesor, the drawing oil cylinder and the pressing plate through-hole are stated, the drawing bar fixture nut is set to the upper of the drawing bar
End, the lower surface of the drawing bar fixture nut and the upper surface of the force snesor abut against, institute's displacement measurement extension rod
For rigid rod, institute's displacement measurement extension rod and the lower end of the drawing bar are detachably connected, and institute's displacement sensors are set to
Institute's displacement measurement extension rod.
It is provided with screw rod on the universal bearing, is provided on the bottom surface of the column main body corresponding with the screw rod
Internal thread hole, the screw rod and the threaded hole are threadedly coupled.
The upper end of the column main body is provided with external thread section, offers on the self-balancing bearing plate and the external screw thread
The column mounting holes that section matches, the external thread section are arranged in the column mounting holes, and the end of the external thread section is arranged
There is flange nut.
The drawing oil cylinder fixing sleeve is in hollow cylindrical, offers limit on the side wall of the drawing oil cylinder fixing sleeve
Hole.
The quantity of institute's displacement sensors is two, and the lower end of the drawing bar is vertically arranged in the extension of institute's displacement measurement
The central location of bar, two institute's displacement sensors are located at the both ends of institute's displacement measurement extension rod.
After adopting the above structure, all kinds of nonplanar assembled self-balancing original positions of a kind of adaptation of the invention pull-out test device
Have the advantages that self-balancing bearing plate is detachably set on column, having used can carry out dismantling easy to carry, column
Adjustable in length, the length of column can be adjusted as needed to adapt to different platform of the conduit of different radians, height etc. into
Row pull-out test, column include column main body and universal bearing, and column main body is vertically arranged, and universal bearing is detachably set to vertical
It on the bottom surface of column, further fits with test object surface by adjusting universal bearing angle, makes each support uniform stressed, this
Invention adapts to all kinds of non-planar of scene, such as cambered surface or rugged flat surface.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
In figure: 1. columns, 11. column main bodys, 12. universal bearings, 2. self-balancing bearing plates, 21. pressing plate through-holes, 22. are drawn
Pull out oil cylinder fixing sleeve, 221. limit holes, 3. drawing oil cylinders, 4. force snesors, 5. drawing bars, 6. displacement measurement extension rods, 7.
Displacement sensor, 8. flange nuts, 9. drawing bar fixture nuts.
Specific embodiment
In order to further explain the technical solution of the present invention, being explained in detail below by specific embodiment the present invention
It states.
A kind of all kinds of nonplanar assembled self-balancing original position pull-out test devices of adaptation as shown in Figure 1, including it is certainly flat
Weigh bearing plate 2, drawing oil cylinder 3, force snesor 4, drawing bar 5, drawing bar fixture nut 9, displacement measurement extension rod 6, displacement biography
Sensor 7, flange nut 8, displacement sensor 7 and adjustable in length column 1.
The quantity of column 1 is 4, and column 1 includes column main body 11 and universal bearing 12, and column main body 11 is arranged vertically,
Universal bearing 12 is detachably set on the bottom surface of column main body 11, and universal bearing 12 adapts to all kinds of non-planar of scene,
Such as cambered surface or rugged flat surface, specifically, universal bearing 12 is using universal footing in the prior art, above-mentioned ten thousand
Screw rod, Roll and chassis are provided on footing, the Roll is arranged on chassis, and the Roll and screw rod
It is fixedly connected, internal thread hole corresponding with the screw rod is provided in column main body 11, the specific internal thread hole setting
In the shaft core position of column main body 11, the screw rod and the threaded hole are threadedly coupled, and when use can adjusting screw rod as needed
To the length of adjusting post 1, the chassis of above-mentioned universal footing can turn to properly as needed for position in the screw hole
Plane.
Self-balancing bearing plate 2 is detachably set on the column, and preferable self-balancing bearing plate 2 is square plate, column
The upper end of main body 11 is provided with external thread section, and the outer diameter of above-mentioned external thread section is less than the outer diameter of column main body 11, self-balancing pressure-bearing
The column mounting holes matched with column main body 11 are offered on plate 2, the aperture of above-mentioned column mounting holes is greater than external thread section
Outer diameter and the outer diameter for being less than column main body 11, the quantity of above-mentioned column mounting holes are 4, and 4 column mounting holes are located at certainly
Four corner locations of bearing plate 2 are balanced, the external thread section is arranged in the column mounting holes, and flange nut 8 is sheathed on institute
Column main body 11 is fixedly connected by the end for stating external thread section with self-balancing bearing plate 2, is provided with pressing plate on self-balancing bearing plate 2
Through-hole 21 and drawing oil cylinder fixing sleeve 22, drawing oil cylinder 3 are connected with drawing oil cylinder fixing sleeve 22, and the part of drawing oil cylinder 3 is set
It is placed in drawing oil cylinder fixing sleeve 22, pressing plate through-hole 21 is provided with from the center position for pressing balance plate 2, pressing plate through-hole 21 and drawing
Pull out the coaxial setting of oil cylinder fixing sleeve 22.
Drawing oil cylinder 3 passes through outer using the punching jack in well-known technique, punching jack in present embodiment
The petroleum pipeline in portion is connect with external oil pump, and in addition above-mentioned petroleum pipeline and above-mentioned oil pump need to prepare, be not belonging to of the invention one
Point, there is press piston, the press piston is hollow tubular on punching jack.
Drawing oil cylinder fixing sleeve 22 is in hollow cylindrical, preferable drawing oil cylinder fixing sleeve 22 and self-balancing bearing plate 2 one
Body formed setting offers limit hole 221 on the side wall of drawing oil cylinder fixing sleeve 22, and preferable above-mentioned petroleum pipeline is hard oil transportation
Pipe, the part of above-mentioned petroleum pipeline are fastened in limit hole 221 work that can play the horizontal direction displacement of limitation drawing oil cylinder 3
With.
Force snesor 4 is drum type brake pressure sensor, and it is logical that the center of above-mentioned drum type brake pressure sensor offers sensor
Hole, the aperture of the sensor through-hole are less than the outer diameter of the press piston, and force snesor 4 is movably set in punching jack
Top.
External thread section is provided on drawing bar 5, drawing bar 5 is arranged in force snesor 4, drawing oil cylinder 3 and pressing plate through-hole 21,
Specifically in the present embodiment, drawing bar 5 is successively arranged in the sensor through-hole of force snesor 4, the punching from top to bottom
The press piston and pressing plate through-hole 21 of jack, drawing bar fixture nut 9 are set to the upper end of drawing bar 5, the fixed spiral shell of drawing bar
The lower surface of mother 9 and the upper surface of force snesor 4 abut against, specifically, between drawing bar fixture nut 9 and force snesor 4 also
It is provided with gasket, the outer diameter of above-mentioned gasket is greater than the aperture of the sensor through-hole, drawing bar fixture nut 9 and force snesor 4
It is abutted by above-mentioned gasket, drawing bar fixture nut 9 and above-mentioned gasket play the role of limiting force snesor 4, drawing
The power that oil cylinder 3 acts on force snesor 4 is the power acted on drawing bar, by the reading for reading force snesor 4
Learn the size of the power acted on drawing bar.
The lower end of drawing bar 5 is vertically arranged in displacement measurement extension rod 6, and displacement measurement extension rod 6 is rigid rod, institute's rheme
Displacement sensor is set to displacement measurement extension rod 6, preferably, the lower end of drawing bar 5 is vertically arranged in displacement measurement extension rod 6
Central location, preferably, shift measurement extension rod 6 is fixed on drawing bar 5 by plain nut, the quantity of institute's displacement sensors
It is two, two institute's displacement sensors are located at the both ends of institute's displacement measurement extension rod 6.
The present invention first passes through following steps when in use and assembles:
(1) it will be threadedly coupled with column main body 11 with universal bearing 12, and according to actual support surface requirement for height,
Adjust the height of column 1；Then assembled 4 root post 1 is inserted into 4 column peaces of self-balancing bearing plate 2 respectively
It fills in hole, and fastens each column 1 with flange nut 8, form four-column type self-balancing load transfer device, adjust the bottom of universal bearing 12
Disk makes above-mentioned four-column type self-balancing load transfer device fit with the plane where component to be measured；
(2) displacement measurement extension rod 6 is fastened on one end of drawing bar 5 with nut
(3) and by drawing oil cylinder 3 it is mounted in drawing oil cylinder fixing sleeve 22, by petroleum pipeline by drawing oil cylinder 3 and extraneous
Oil pump be connected, above-mentioned petroleum pipeline is embedded in limit hole 221, and force snesor 4 is placed on drawing oil cylinder 3；
(4) upper end of drawing bar 5 downward, is sequentially passed through pressure by the one end for connecting drawing bar 5 with displacement measurement extension rod 6
The upper end of drawing bar 5 is fastened on force snesor 4 by plate through-hole 21, drawing oil cylinder 3 and force snesor 4, blending bolt.
(5) two displacement sensors are symmetrically mounted on to the both ends of displacement measurement extension rod 6.
The present invention after assembling, installs drawing bolt, by the lower end of drawing bar 5 and company, component institute to be measured on component to be measured
The drawing connect is bolted fixation, opens the oil pump that drawing oil cylinder 3 is connected, and starts to carry out drawing experiment and acquisition experiment number
According to the experimental data of above-mentioned acquisition is the reading of force snesor 4 and displacement sensor 7.
Above-described embodiment and attached drawing and non-limiting product form and style of the invention, any technical field it is common
The appropriate changes or modifications that technical staff does it all should be regarded as not departing from patent category of the invention.
Claims (5)
1. a kind of all kinds of nonplanar assembled self-balancing original positions of adaptation pull-out test device, it is characterised in that: including self-balancing
Bearing plate, drawing oil cylinder, force snesor, drawing bar, drawing bar fixture nut, displacement measurement extension rod displacement sensor and length
Adjustable column, the column include column main body and the universal bearing, and the column main body is vertically arranged, described universal
Support is detachably set on the bottom surface of the column, and the self-balancing bearing plate is detachably set on the column, described
Pressing plate through-hole and drawing oil cylinder fixing sleeve are provided on self-balancing bearing plate, it is logical that the drawing oil cylinder fixing sleeve is located at the pressing plate
The top in hole, the pressing plate through-hole and the coaxial setting of drawing oil cylinder fixing sleeve, the drawing oil cylinder and the drawing oil cylinder
Fixing sleeve is fixedly connected, and the force snesor is movably set in the top of the drawing oil cylinder, and the drawing bar is arranged in described
Force snesor, the drawing oil cylinder and the pressing plate through-hole, the drawing bar fixture nut are set to the upper end of the drawing bar,
The lower surface of the drawing bar fixture nut and the upper surface of the force snesor abut against, and institute's displacement measurement extension rod is rigid
Property bar, institute's displacement measurement extension rod and the lower end of the drawing bar be detachably connected, and institute's displacement sensors are set to described
Displacement measurement extension rod.
2. a kind of all kinds of nonplanar assembled self-balancing original positions of adaptation as described in claim 1 pull-out test device, special
Sign is: being provided with screw rod on the universal bearing, is provided on the bottom surface of the column main body corresponding with the screw rod
Internal thread hole, the screw rod and the threaded hole are threadedly coupled.
3. a kind of all kinds of nonplanar assembled self-balancing original positions of adaptation as claimed in claim 2 pull-out test device, special
Sign is: the upper end of the column main body is provided with external thread section, offers on the self-balancing bearing plate and the external screw thread
The column mounting holes that section matches, the external thread section are arranged in the column mounting holes, and the end of the external thread section is arranged
There is flange nut.
4. a kind of all kinds of nonplanar assembled self-balancing original positions of adaptation as described in claim 1 pull-out test device, special
Sign is: the drawing oil cylinder fixing sleeve is in hollow cylindrical, offers limit hole on the side wall of the drawing oil cylinder fixing sleeve.
5. a kind of all kinds of nonplanar assembled self-balancing original positions of adaptation as described in claim 1 pull-out test device, special
Sign is: the quantity of institute's displacement sensors is two, and the lower end of the drawing bar is vertically arranged in the extension of institute's displacement measurement
The central location of bar, two institute's displacement sensors are located at the both ends of institute's displacement measurement extension rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811525351.9A CN109540651B (en) | 2018-12-13 | 2018-12-13 | Assembled self-balancing in-situ drawing test device suitable for various nonplanar surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811525351.9A CN109540651B (en) | 2018-12-13 | 2018-12-13 | Assembled self-balancing in-situ drawing test device suitable for various nonplanar surfaces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109540651A true CN109540651A (en) | 2019-03-29 |
| CN109540651B CN109540651B (en) | 2024-02-23 |
Family
ID=65855140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811525351.9A Active CN109540651B (en) | 2018-12-13 | 2018-12-13 | Assembled self-balancing in-situ drawing test device suitable for various nonplanar surfaces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109540651B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2081533U (en) * | 1990-12-01 | 1991-07-24 | 中国建筑第一工程局建筑科学研究所 | Electric draw-off instrument for concrete drawing test |
| JPH0617437A (en) * | 1992-07-02 | 1994-01-25 | Takenaka Komuten Co Ltd | Pull-out test method of driven precast pile and pull-out tester thereto |
| KR20070101638A (en) * | 2006-04-11 | 2007-10-17 | 김형남 | Originally position a pile of vertical support force and pillar side frictional force measurement method and the device |
| CN102043018A (en) * | 2010-11-02 | 2011-05-04 | 中国科学院武汉岩土力学研究所 | Three-dimensional loading simulation test device for tunnel boring machine |
| CN103398901A (en) * | 2013-08-08 | 2013-11-20 | 中国科学院武汉岩土力学研究所 | Indoor pull-out test apparatus for anchor rod |
| CN203688358U (en) * | 2013-12-26 | 2014-07-02 | 广州市建设工程质量安全检测中心 | Novel post-anchored steel bar drawing detection device |
| CN205449674U (en) * | 2015-12-30 | 2016-08-10 | 河南理工大学 | Experimental die pull - displacement monitoring devices is drawn to laboratory stock |
| CN209446371U (en) * | 2018-12-13 | 2019-09-27 | 华侨大学 | A kind of all kinds of nonplanar assembled self-balancing original positions of adaptation pull-out test device |
-
2018
- 2018-12-13 CN CN201811525351.9A patent/CN109540651B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2081533U (en) * | 1990-12-01 | 1991-07-24 | 中国建筑第一工程局建筑科学研究所 | Electric draw-off instrument for concrete drawing test |
| JPH0617437A (en) * | 1992-07-02 | 1994-01-25 | Takenaka Komuten Co Ltd | Pull-out test method of driven precast pile and pull-out tester thereto |
| KR20070101638A (en) * | 2006-04-11 | 2007-10-17 | 김형남 | Originally position a pile of vertical support force and pillar side frictional force measurement method and the device |
| CN102043018A (en) * | 2010-11-02 | 2011-05-04 | 中国科学院武汉岩土力学研究所 | Three-dimensional loading simulation test device for tunnel boring machine |
| CN103398901A (en) * | 2013-08-08 | 2013-11-20 | 中国科学院武汉岩土力学研究所 | Indoor pull-out test apparatus for anchor rod |
| CN203688358U (en) * | 2013-12-26 | 2014-07-02 | 广州市建设工程质量安全检测中心 | Novel post-anchored steel bar drawing detection device |
| CN205449674U (en) * | 2015-12-30 | 2016-08-10 | 河南理工大学 | Experimental die pull - displacement monitoring devices is drawn to laboratory stock |
| CN209446371U (en) * | 2018-12-13 | 2019-09-27 | 华侨大学 | A kind of all kinds of nonplanar assembled self-balancing original positions of adaptation pull-out test device |
Non-Patent Citations (1)
| Title |
|---|
| 王家全;周岳富;夏雨;黄世斌;: "新型可视土工拉拔试验仪的研发与应用", 岩土工程学报, no. 04 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109540651B (en) | 2024-02-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107525726B (en) | Oblique loading device for beam slab column joints of frame structure | |
| RU134646U1 (en) | STAND FOR STATIC TESTS OF REINFORCED REINFORCED CONCRETE ELEMENTS | |
| CN105092365B (en) | A kind of concrete component is pulled and supported lotus loading frame | |
| CN206515147U (en) | Thin-walled bar tensile test device | |
| CN202471397U (en) | Elastic support parts flexibility tester | |
| CN110398429A (en) | A kind of concrete filled steel tube Experimental Study on Seismic Behavior device and test method considering that work progress influences | |
| CN106153314A (en) | A kind of plane framework node loads and node area detrusion measurement apparatus | |
| CN209446371U (en) | A kind of all kinds of nonplanar assembled self-balancing original positions of adaptation pull-out test device | |
| CN109900423A (en) | A kind of torque sensor calibration calibrating installation and its reinforcing component | |
| CN101813575B (en) | Bending resistance test device for valve | |
| CN102692351A (en) | Test bed and application method thereof to testing mechanical properties of inclined bolt | |
| CN105547584A (en) | Portable tension value system field calibration device | |
| CN114486538A (en) | Anti-pulling test measuring device for foundation pit anchor rod | |
| CN112630035B (en) | Displacement monitoring system for drawing test | |
| CN109540651A (en) | A kind of all kinds of nonplanar assembled self-balancing original positions of adaptation pull-out test device | |
| CN105509683B (en) | Displacement measuring device for self-balancing pile testing method | |
| CN203837909U (en) | Crank shaft bending fatigue test calibration device | |
| CN111122266B (en) | Device for generating specific local geometric initial defects on outer surface of pipeline | |
| CN104677631B (en) | Hydraulic pressure device for measuring force, system and its measuring method of intermediate bearing | |
| CN109490082B (en) | Automatic direct pulling equipment for common bearing platform for detecting concrete strength by pull-out method | |
| CN209215110U (en) | A kind of experimental rig of the uniaxial tensile test suitable for viscoelastic material | |
| CN108225261B (en) | Pile top and pile end settlement simultaneous observation device and method for pile foundation model test | |
| CN101806688B (en) | Unidirectional tension test device of super-large diameter round bar machine | |
| CN110873620A (en) | Bolt pretightening force test and fatigue test device | |
| CN206095771U (en) | Many axial tension that contain crack defect component press loading device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |