CN109540651B - Assembled self-balancing in-situ drawing test device suitable for various nonplanar surfaces - Google Patents
Assembled self-balancing in-situ drawing test device suitable for various nonplanar surfaces Download PDFInfo
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- CN109540651B CN109540651B CN201811525351.9A CN201811525351A CN109540651B CN 109540651 B CN109540651 B CN 109540651B CN 201811525351 A CN201811525351 A CN 201811525351A CN 109540651 B CN109540651 B CN 109540651B
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- 238000011065 in-situ storage Methods 0.000 title claims abstract description 11
- 238000006073 displacement reaction Methods 0.000 claims abstract description 41
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 230000035515 penetration Effects 0.000 description 3
- 238000005493 welding type Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Classifications
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- 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
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- 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
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- 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 invention discloses an assembly type self-balancing in-situ drawing test device suitable for various non-planes, which comprises a self-balancing bearing plate, a drawing oil cylinder, a force sensor, a drawing rod fixing nut, a displacement measurement extension rod, a displacement sensor and a stand column.
Description
Technical Field
The invention relates to the technical field of embedded part drawing tests, in particular to an assembly type self-balancing in-situ drawing test device suitable for various nonplanar surfaces.
Background
In modern reinforced concrete engineering, embedded parts are widely used, and more requirements are also met for mechanical property detection of the embedded parts. Particularly, the pre-buried channel in the subway tunnel lining is relatively complex in loading condition, so that the mechanical property requirement on the pre-buried channel is relatively high, particularly the tensile pulling bearing capacity of the pre-buried channel is required to be subjected to a pull test in advance to determine the pull bearing capacity of the pre-buried channel, at present, a device for carrying out an in-situ pull test on the pre-buried channel in the subway tunnel mainly adopts a self-balancing loading mode, namely a door type or four-column type self-balancing device, and then a penetrating jack is used for pulling, the existing self-balancing pulling device mainly adopts an integral welding type, and the following defects exist in the pulling device: 1. the whole welding type is inconvenient to carry; 2. if the supporting surface of the component is a cambered surface or other non-planar surfaces, the self-balancing force transmission upright post is in point contact or line contact with the supporting surface, the non-uniform stress of the force transmission post is easily caused in the form of point contact or line contact with the supporting surface, the residual deformation of the device is large after long-term use, the accuracy of the test result is affected, and the device cannot adapt to various non-planar surfaces such as the cambered surface.
Disclosure of Invention
Therefore, the invention aims to provide the assembled self-balancing in-situ drawing device which is convenient to carry, small in self-residual deformation after being matched with the components with the channels with different radians and the platforms with different heights for a long time, suitable for various nonplanar surfaces such as cambered surfaces and the like, and more accurate in experimental result.
In order to achieve the above object, the solution of the present invention is:
the utility model provides an adaptation all kinds of nonplanar assembled self-balancing normal position drawing test device which characterized in that: including self-balancing bearing plate, draw hydro-cylinder, force transducer, pull rod fixation nut, displacement measurement extension rod displacement sensor and length adjustable stand, the stand include the stand main part with universal support, the stand main part is vertical to be set up, universal support can dismantle set up in on the bottom surface of stand, self-balancing bearing plate can dismantle set up in on the stand, be provided with clamp plate through-hole and pull cylinder fixation cover on the self-balancing bearing plate, pull cylinder fixation cover is located the top of clamp plate through-hole, the clamp plate through-hole with the coaxial setting of pull cylinder fixation cover, pull the hydro-cylinder with pull cylinder fixation cover fixed connection, force transducer activity set up in the top of pull cylinder, pull rod wear to locate force transducer pull cylinder with clamp plate through-hole, pull rod fixation nut set up in the upper end of pull rod, pull rod fixation nut's lower surface with force transducer's upper surface looks butt, the displacement measurement extension rod is the rigid rod, the displacement measurement extension rod with the pull rod can be connected in the displacement measurement extension rod.
The universal support is provided with a screw, the bottom surface of the upright post main body is provided with an internal threaded hole corresponding to the screw, and the screw is in threaded connection with the threaded hole.
The self-balancing bearing plate is characterized in that an external thread section is arranged at the upper end of the upright post main body, an upright post mounting hole matched with the external thread section is formed in the self-balancing bearing plate, the external thread section is arranged in the upright post mounting hole in a penetrating mode, and a flange nut is sleeved at the tail end of the external thread section.
The drawing oil cylinder fixing sleeve is hollow and cylindrical, and a limiting hole is formed in the side wall of the drawing oil cylinder fixing sleeve.
The number of the displacement sensors is two, the lower end of the drawing rod vertically penetrates through the central position of the displacement measurement extension rod, and the two displacement sensors are respectively positioned at the two ends of the displacement measurement extension rod.
After the structure is adopted, the assembly type self-balancing in-situ drawing test device suitable for various nonplanar surfaces has the following beneficial effects: the self-balancing bearing plate is detachably arranged on the stand column, the stand column is used up and can be detached for convenient carrying, the length of the stand column is adjustable, the length of the stand column can be adjusted according to the requirement, so that the stand column is suitable for drawing tests of channels with different radians, platforms with different heights and the like, the stand column comprises a stand column main body and a universal support, the stand column main body is vertically arranged, the universal support is detachably arranged on the bottom surface of the stand column, and the angle of the universal support is adjusted to be further attached to the surface of a test object, so that the supports are uniformly stressed.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
in the figure: 1. the device comprises a stand column, a stand column main body, a universal support, a self-balancing bearing plate, a pressure plate through hole, a drawing oil cylinder fixing sleeve, a limiting hole and a self-balancing bearing plate, wherein the stand column main body, the universal support, the self-balancing bearing plate, the pressure plate through hole and the pressure plate through hole are arranged in sequence, and the drawing oil cylinder fixing sleeve is arranged in sequence, and the limiting hole is arranged in sequence. And 3, drawing oil cylinders, 4, force sensors, 5, drawing rods, 6, displacement measurement extension rods, 7, displacement sensors, 8, flange nuts and 9, drawing rod fixing nuts.
Detailed Description
In order to further explain the technical scheme of the invention, the invention is explained in detail by specific examples.
The assembly type self-balancing in-situ drawing test device suitable for various nonplanar conditions is shown in fig. 1, and comprises a self-balancing bearing plate 2, a drawing cylinder 3, a force sensor 4, a drawing rod 5, a drawing rod fixing nut 9, a displacement measuring extension rod 6, a displacement sensor 7, a flange nut 8, a displacement sensor 7 and a stand column 1 with adjustable length.
The quantity of stand 1 is 4, and stand 1 includes stand main part 11 and universal support 12, and stand main part 11 is vertical to be arranged, and universal support 12 can dismantle the setting on the lower bottom surface of stand main part 11, and universal support 12 can adapt to all kinds of nonplanar on the scene, like cambered surface or the uneven platform face of height, specifically, universal support 12 adopts the universal footing among the prior art, is provided with screw rod, universal spin and chassis on the above-mentioned universal footing, the universal spin sets up on the chassis, and this universal spin and screw rod fixed connection are provided with on the stand main part 11 with the corresponding internal thread hole of screw rod, specifically the internal thread hole sets up in the axle center position of stand main part 11, the screw rod with screw hole threaded connection, thereby can adjust the screw rod as required the position in the screw hole adjusts the length of stand 1, and the chassis of above-mentioned universal footing can rotate to suitable plane as required during the use.
The self-balancing bearing plate 2 can be dismantled and set up in on the stand, the self-balancing bearing plate 2 of preferred is square board, the upper end of stand main part 11 is provided with the external screw thread section, the external diameter of above-mentioned external screw thread section is less than the external diameter of stand main part 11, set up on the self-balancing bearing plate 2 with stand main part 11 matched with stand mounting hole, the aperture of above-mentioned stand mounting hole is greater than the external diameter of external screw thread section and is less than the external diameter of stand main part 11, the quantity of above-mentioned stand mounting hole is 4, 4 stand mounting holes are located the four corner positions of self-balancing bearing plate 2 respectively, the external screw thread section wears to locate the stand mounting hole, flange nut 8 cover is located the end of external screw thread section is with stand main part 11 and self-balancing bearing plate 2 fixed connection, be provided with clamp plate through-hole 21 and drawing cylinder fixed cover 22 on the self-balancing bearing plate 2, drawing cylinder 3 is connected with drawing cylinder fixed cover 22, the part of drawing cylinder 3 sets up in drawing cylinder fixed cover 22, clamp through-hole 21 sets up in the central point of self-balancing plate 2, clamp through-hole 21 and drawing cylinder fixed cover 22 sets up coaxial.
In this embodiment, the drawing cylinder 3 is a penetration jack in the known art, and the penetration jack is connected to an external oil pump through an external oil pipe, the oil pipe and the oil pump are separately prepared, and the penetration jack is provided with a pressing piston, which is hollow and cylindrical.
The drawing oil cylinder fixing sleeve 22 is hollow and cylindrical, the drawing oil cylinder fixing sleeve 22 and the self-balancing bearing plate 2 are integrally formed, a limiting hole 221 is formed in the side wall of the drawing oil cylinder fixing sleeve 22, the oil pipe is hard, and the part of the oil pipe is clamped in the limiting hole 221 to play a role in limiting the horizontal displacement of the drawing oil cylinder 3.
The force sensor 4 is a cylindrical pressure sensor, a sensor through hole is formed in the center of the cylindrical pressure sensor, the aperture of the sensor through hole is smaller than the outer diameter of the jacking piston, and the force sensor 4 is movably arranged above the perforating jack.
The external thread section is arranged on the pull rod 5, the pull rod 5 penetrates through the force sensor 4, the pull cylinder 3 and the pressing plate through hole 21, specifically in the embodiment, the pull rod 5 penetrates through the force sensor 4 from top to bottom in sequence, the pressing piston of the penetrating jack and the pressing plate through hole 21, the pull rod fixing nut 9 is arranged at the upper end of the pull rod 5, the lower surface of the pull rod fixing nut 9 is abutted to the upper surface of the force sensor 4, specifically, a gasket is further arranged between the pull rod fixing nut 9 and the force sensor 4, the outer diameter of the gasket is larger than the aperture of the force sensor through hole, the pull rod fixing nut 9 is abutted to the force sensor 4 through the gasket, the pull rod fixing nut 9 and the gasket play a limiting role on the force sensor 4, the force acting on the force sensor 4 by the pull cylinder 3 is the force acting on the pull rod, and the magnitude of the force acting on the pull rod can be known by reading the reading of the force sensor 4.
The lower extreme of pull rod 5 wears to locate displacement measurement extension rod 6 perpendicularly, and displacement measurement extension rod 6 is the rigid rod, displacement sensor sets up in displacement measurement extension rod 6, and preferably, the lower extreme of pull rod 5 wears to locate displacement measurement extension rod 6's central point perpendicularly, and preferably, displacement measurement extension rod 6 passes through conventional nut to be fixed on pull rod 5, the quantity of displacement sensor is two, two displacement sensor is located respectively displacement measurement extension rod 6's both ends.
When in use, the invention is assembled by the following steps:
(1) The universal support 12 is in threaded connection with the upright post main body 11, and the height of the upright post 1 is adjusted according to the height requirement of an actual supporting surface; then, the assembled 4 stand columns 1 are respectively inserted into 4 stand column mounting holes of the self-balancing bearing plate 2, each stand column 1 is fastened by a flange nut 8 to form a four-column self-balancing force transmission device, and the chassis of the universal support 12 is regulated to enable the four-column self-balancing force transmission device to be attached to the plane where the component to be tested is located;
(2) The displacement measuring extension rod 6 is fastened to one end of the drawing rod 5 by a nut
(3) The drawing cylinder 3 is arranged in the drawing cylinder fixing sleeve 22, the drawing cylinder 3 is connected with an external oil pump through an oil delivery pipe which is embedded in the limiting hole 221, and the force sensor 4 is arranged on the drawing cylinder 3;
(4) The end of the pulling rod 5 connected with the displacement measuring extension rod 6 is downward, the upper end of the pulling rod 5 sequentially passes through the pressing plate through hole 21, the pulling cylinder 3 and the force sensor 4, and the upper end of the pulling rod 5 is fastened on the force sensor 4 by bolts.
(5) Two displacement sensors are symmetrically installed at both ends of the displacement measurement extension rod 6.
After the assembly, the drawing bolt is arranged on the component to be tested, the lower end of the drawing rod 5 is fixedly connected with the drawing bolt connected with the component to be tested, the oil pump connected with the drawing oil cylinder 3 is started, drawing experiments are started, and experimental data are collected, wherein the collected experimental data are readings of the force sensor 4 and the displacement sensor 7.
The above examples and drawings are not intended to limit the form or form of the present invention, and any suitable variations or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present invention.
Claims (4)
1. The utility model provides an adaptation all kinds of nonplanar assembled self-balancing normal position drawing test device which characterized in that: the automatic displacement measuring device comprises a self-balancing bearing plate, a drawing oil cylinder, a force sensor, a drawing rod fixing nut, a displacement measuring extension rod, a displacement sensor and a stand column with adjustable length, wherein the stand column comprises a stand column main body and a universal support, the stand column main body is vertically arranged, the universal support is detachably arranged on the bottom surface of the stand column, the self-balancing bearing plate is detachably arranged on the stand column, the self-balancing bearing plate is provided with a pressing plate through hole and a drawing oil cylinder fixing sleeve, the drawing oil cylinder fixing sleeve is positioned above the pressing plate through hole, the pressing plate through hole and the drawing oil cylinder fixing sleeve are coaxially arranged, the drawing oil cylinder is fixedly connected with the drawing oil cylinder fixing sleeve, the force sensor is movably arranged above the drawing oil cylinder, the drawing rod penetrates through the force sensor, the drawing oil cylinder and the pressing plate through hole, the drawing rod fixing nut is arranged at the upper end of the drawing rod, the lower surface of the drawing rod fixing nut is in contact with the upper surface of the force sensor, the displacement measuring extension rod is a rigid rod, the displacement measuring extension rod is arranged at the lower end of the drawing oil cylinder, and the displacement measuring extension rod is detachably connected with the drawing oil cylinder; the number of the displacement sensors is two, the lower end of the drawing rod vertically penetrates through the central position of the displacement measurement extension rod, and the two displacement sensors are respectively positioned at the two ends of the displacement measurement extension rod; the universal support adopts the universal footing, be provided with screw rod, universal spin and chassis on the universal footing, the universal spin sets up on the chassis, and this universal spin and screw rod fixed connection.
2. The assembled self-balancing in-situ drawing test device suitable for various nonplanar surfaces as claimed in claim 1, wherein: the universal support is provided with a screw, the bottom surface of the upright post main body is provided with an internal threaded hole corresponding to the screw, and the screw is in threaded connection with the threaded hole.
3. The assembled self-balancing in-situ drawing test device suitable for various nonplanar surfaces as claimed in claim 2, wherein: the self-balancing bearing plate is characterized in that an external thread section is arranged at the upper end of the upright post main body, an upright post mounting hole matched with the external thread section is formed in the self-balancing bearing plate, the external thread section is arranged in the upright post mounting hole in a penetrating mode, and a flange nut is sleeved at the tail end of the external thread section.
4. The assembled self-balancing in-situ drawing test device suitable for various nonplanar surfaces as claimed in claim 1, wherein: the drawing oil cylinder fixing sleeve is hollow and cylindrical, and a limiting hole is formed in the side wall of the drawing oil cylinder fixing sleeve.
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 CN109540651A (en) | 2019-03-29 |
| CN109540651B true CN109540651B (en) | 2024-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811525351.9A Active CN109540651B (en) | 2018-12-13 | 2018-12-13 | Assembled self-balancing in-situ drawing test device suitable for various nonplanar surfaces |
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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 |
|---|
| 新型可视土工拉拔试验仪的研发与应用;王家全;周岳富;夏雨;黄世斌;;岩土工程学报(04);全文 * |
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| CN109540651A (en) | 2019-03-29 |
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