CN107907419B - Electromagnetic induction drawing instrument - Google Patents
Electromagnetic induction drawing instrument Download PDFInfo
- Publication number
- CN107907419B CN107907419B CN201711451867.9A CN201711451867A CN107907419B CN 107907419 B CN107907419 B CN 107907419B CN 201711451867 A CN201711451867 A CN 201711451867A CN 107907419 B CN107907419 B CN 107907419B
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- electromagnetic
- clamping
- anchor
- anchor rod
- assembly
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- 230000005674 electromagnetic induction Effects 0.000 title claims abstract description 19
- 230000000712 assembly Effects 0.000 claims description 32
- 238000000429 assembly Methods 0.000 claims description 32
- 238000009434 installation Methods 0.000 claims description 30
- 238000004026 adhesive bonding Methods 0.000 claims description 9
- 239000013013 elastic material Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- 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
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- 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
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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)
- Electromagnets (AREA)
- Magnetic Treatment Devices (AREA)
Abstract
The invention relates to the field of anchor rod drawing, in particular to an electromagnetic induction drawing instrument, which adopts two groups of electromagnetic drawing components to be arranged outside an anchor rod, an anchor is arranged at the outer side of the anchor rod positioned at the two groups of electromagnetic drawing components to limit and fix, and the anchor rod is fixed through a corresponding threaded through hole and a limit screw rod so as to be convenient for limiting the position of the electromagnetic drawing components.
Description
Technical Field
The invention relates to the field of anchor rod drawing, in particular to an electromagnetic induction drawing instrument.
Background
The drawing instrument is suitable for the field detection of the anchoring force of various anchoring bodies such as anchor rods, reinforcing steel bars and the like, and is a necessary field detection instrument for each engineering quality detection unit.
The drawing instrument commonly used at present consists of a hydraulic cylinder, a manual pump, a pressure gauge, a high-pressure oil pipe, an anchor and the like. When in field detection, the hydraulic cylinder is arranged on an anchor rod or a reinforcing steel bar, an anchor is fixed, a high-pressure oil pipe is used for connecting the hydraulic cylinder and a manual pump, and then the manual pump is used for pressing. The drawing instrument is most commonly used, but the instrument is heavy, and the consistency of the antiwear hydraulic oil used by the drawing instrument is different at different environment temperatures, so that the detection result is affected to a certain extent.
Disclosure of Invention
The invention solves the technical problem of overcoming the defects of the prior art and providing an electromagnetic induction drawing instrument.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The utility model provides an appearance is drawn in electromagnetic induction, includes concrete block and stock, the one end of stock is pre-buried in the inside of concrete block, the other end of stock passes the top surface of concrete block and reachs the outside of concrete block, the outside that concrete block is located the stock is provided with electromagnetism and draws the subassembly, electromagnetism draws the quantity of subassembly and is two sets of, and from top to bottom in the outside of stock and linearly arrange in proper order, electromagnetism draws the subassembly including installation casing and electro-magnet assembly, installation cavity has been seted up to the inside of installation casing, the position that one side of installation cavity and installation casing correspond is uncovered, electro-magnet assembly fixed mounting is in the inside of installation cavity, and wherein the uncovered one side of two sets of electromagnetism are drawn the subassembly and are set up relatively, the outside of stock is located electromagnetism and is drawn one side that the subassembly is kept away from concrete block and is provided with the tool, the inside of electro-magnet assembly, installation casing and tool all has been seted up with the corresponding spacing through-hole of stock, the outside that the stock is located the outside end that the stock is located concrete and passes the spacing through-hole of two sets of electromagnetism and the spacing through-hole of subassembly and the tool in proper order and the bottom surface of anchor, the anchor has the corresponding screw thread of anchor is set up through the screw thread of anchor support plate and the corresponding screw thread of installation.
Preferably, the elastic buffer assembly comprises a limit mounting plate and an elastic buffer pad, an annular connection lug is fixedly arranged on one side surface of the limit mounting plate, a positioning chute corresponding to the annular connection lug is formed in the bottom surface of the mounting shell, corresponding thread layers are arranged on the side wall surfaces of the annular connection lug and the two side wall surfaces of the positioning chute, the two side wall surfaces are fixed through the thread layers in a threaded mode, and the elastic buffer pad is arranged on one side, far away from the mounting shell, of the limit mounting plate.
Preferably, an adhesive bonding layer is arranged between the elastic cushion pad and the limiting mounting plate, and the elastic cushion pad is fixed on the surface of the limiting mounting plate through the adhesive bonding layer in an adhesive mode.
Preferably, the electromagnet assemblies of the two groups of electromagnetic drawing assemblies are electrically connected with the power supply device through wires, and an adjusting switch is arranged between the electromagnet assemblies and the power supply device, and the adjusting switch is a rheostat.
Preferably, a clamping assembly is arranged at one end surface of the two electromagnetic drawing assemblies, which is far away from each other, the clamping assembly is tightly propped against the electromagnetic drawing assemblies, the clamping assembly comprises two hoops, tensioning plates are respectively arranged at two ends of each hoop, clamping through holes are formed in the tensioning plates, a fixing ring is fixed on the inner side of each hoop, and elastic clamping teeth are arranged on the side surface of each fixing ring, which is in contact with the anchor rod; one end of a screw rod of the bolt penetrates through the clamping through holes corresponding to the two clamping hoops, the large end of the bolt is tightly pressed with the first clamping surface of one of the tensioning plates, and one end of the bolt far away from the large end is assembled with the screw cap through threaded screwing.
Preferably, the elastic latch is made of an elastic material.
Preferably, the fixing ring is fixed on the inner side of the clamping hoop by means of gluing.
Preferably, a plurality of retaining protrusions which are uniformly distributed on the circumference direction of the retaining protrusions are arranged on the end face pressed by the second clamping surface of the nut and the tensioning plate, and a plurality of retaining grooves matched with the retaining protrusions are arranged on the second clamping surface. The retaining protrusion is obliquely arranged in the screwing direction of the nut.
Compared with the prior art, the invention has the beneficial effects that: this electromagnetic induction draws appearance adopts two sets of electromagnetism to draw the subassembly setting in the outside of stock, and set up the ground tackle in the outside that the stock is located two sets of electromagnetism and draw the subassembly and carry out spacing fixedly, and through seting up corresponding screw thread through-hole, and fix through spacing screw, so as to carry out the position to the electromagnetism and draw the subassembly and inject, adopt and set up the electro-magnet subassembly in the installation casing, and make it and power supply unit electric connection, thereby produce magnetic force, set up through the electro-magnet subassembly is opposite, make two sets of electromagnetism draw the subassembly and remove in opposite directions, thereby draw the stock, through setting up the elastic buffer subassembly that comprises spacing mounting panel and elasticity blotter in the one side that the installation casing is close to with concrete block or ground tackle, cushion, avoid the electromagnetism to draw the damage of subassembly, make things convenient for people's use.
Drawings
Fig. 1 is a schematic structural diagram of an electromagnetic induction drawing instrument according to the present invention.
Fig. 2 is a schematic structural diagram of a clamping assembly of an electromagnetic induction drawing instrument according to the present invention.
Fig. 3 is an enlarged view of F1 in fig. 2.
Fig. 4 is a schematic diagram showing a nut structure of a clamping assembly of an electromagnetic induction drawing apparatus according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the present invention provides a technical solution:
The utility model provides an appearance is drawn in electromagnetic induction, includes concrete block 1 and stock 2, the one end pre-buried inside at concrete block 1 of stock 2, the other end of stock 2 passes the top surface of concrete block 1 and reachs the outside of concrete block 1, the outside that concrete block 1 is located stock 2 is provided with electromagnetism and draws subassembly 3, the quantity that electromagnetism draws subassembly 3 is two sets of, and from top to bottom in the outside of stock 2 linear arrangement in proper order, electromagnetism draws subassembly 3 including installation casing 4 and electromagnet assembly 5, installation cavity 6 has been seted up to the inside of installation casing 4, the position that one side of installation cavity 6 corresponds with installation casing 4 is uncovered, electromagnet assembly 5 fixed mounting is in the inside of installation cavity 6, and wherein two sets of electromagnetism are pulled subassembly 3 open one side and are set up relatively, the outside that the outside of stock 2 is located electromagnetism and is drawn subassembly 3 and is provided with anchor 7, electromagnet assembly 5, installation casing 4 and anchor 7's inside all is seted up and is corresponding spacing through-hole 8 with 2,2 are located the outside that installation casing 7 is located anchor 1 and two sets of anchor 7 and the outside of anchor 7 is located and the anchor 7 is passed through the corresponding screw thread of installation thread 8, the outside of stock 7 is located the anchor thread 8 and the outside of setting up through the position that the anchor thread of anchor rod 7 is located the outside of installation cavity 10.
As a technical optimization scheme of the invention, the elastic buffer assembly 12 comprises a limit mounting plate 13 and an elastic buffer pad 14, an annular connecting lug 15 is fixedly mounted on one side surface of the limit mounting plate 13, a positioning chute 16 corresponding to the annular connecting lug 15 is formed in the bottom surface of the mounting shell 4, corresponding thread layers are arranged on the side wall surfaces of the annular connecting lug 15 and the two side wall surfaces of the positioning chute 16, the two are fixed through the thread layers, and the elastic buffer pad 14 is arranged on one side, far away from the mounting shell 4, of the limit mounting plate 13.
As a technical optimization scheme of the invention, an adhesive bonding layer 17 is arranged between the elastic cushion pad 14 and the limit mounting plate 13, and the elastic cushion pad 14 is fixed on the surface of the limit mounting plate 13 through the adhesive bonding layer 17.
As a technical optimization scheme of the invention, the electromagnet assemblies 5 of the two groups of electromagnetic drawing assemblies 3 are electrically connected with a power supply device through wires, and an adjusting switch is arranged between the electromagnet assemblies and the power supply device, and is a rheostat.
Working principle: when people use the electromagnetic induction drawing instrument, two groups of electromagnetic drawing assemblies 3 are arranged outside the anchor rods 2, an anchorage device 7 is arranged on the outer sides of the anchor rods 2, which are positioned on the two groups of electromagnetic drawing assemblies 3, for limiting and fixing, and through a corresponding threaded through hole 10, limiting screws 11 are arranged, so that the electromagnetic drawing assemblies 3 are conveniently limited in position, an electromagnet assembly 5 is arranged inside an installation shell 4 and is electrically connected with a power supply device, magnetic force is generated, the electromagnetic drawing assemblies 3 are oppositely arranged, the two groups of electromagnetic drawing assemblies 3 are oppositely moved, the anchor rods 2 are drawn, an elastic buffer assembly 12 consisting of a limiting mounting plate 13 and an elastic buffer pad 14 is arranged on one side, close to the concrete block 1 or the anchorage device 7, of the installation shell 4, and the electromagnetic drawing assemblies 3 are buffered, so that the electromagnetic drawing assemblies 3 are prevented from being damaged, and the electromagnetic induction drawing instrument is convenient for people to use.
Referring to fig. 2-3, in order to make the electromagnetic drawing assembly 3 better fixed with the anchor rod 2 during drawing, to prevent the electromagnetic drawing assembly 3 from loosening during drawing to cause too large measurement error, the following structure may be adopted:
A clamping assembly is arranged at one end surface (such as the end surface between the electromagnetic drawing assembly 3 and the elastic buffer assembly 12 in fig. 1) of the two electromagnetic drawing assemblies 3, the clamping assembly is tightly propped against the electromagnetic drawing assemblies 3, the electromagnetic drawing assemblies comprise two clamping clamps 100, tensioning plates 110 are respectively arranged at two ends of the clamping clamps 100, clamping through holes 111 are formed in the tensioning plates 110, a fixing ring 300 is fixed at the inner side of the clamping clamps 110, and elastic clamping teeth 310 are arranged on the side surface, contacted with the anchor rod 2, of the fixing ring 300; preferably, the fixing ring is fixed on the inner side of the clamp by means of gluing;
One end of a screw 210 of the bolt 200 passes through the clamping through holes 111 corresponding to the two clamping hoops, the large end 220 of the bolt 200 is pressed tightly with the first clamping surface 113 of one of the tensioning plates 110, and one end of the bolt far away from the large end is assembled with a nut 230 through screw thread screwing;
The elastic latch 310 is made of an elastic material such as rubber, silicone, etc.
When the clamp is used, the bolts are tightened to tightly clamp the anchor rod 2 by screwing the nuts, in the process, the elastic clamping teeth 310 deform to tightly clamp the anchor rod 2, the elastic clamping teeth can increase the pressure with the anchor rod by utilizing the self elasticity, and the friction coefficient between the clamp and the anchor rod can be increased by utilizing the self structure and the material, so that the friction force between the clamp and the anchor rod can be increased, and the clamp is more stably fixed on the anchor rod 2. The electromagnetic drawing assembly 3 is tightly pressed against the end surface of the clamping assembly (such as the outline in the top view direction of the clamping assembly in fig. 2), so that the fixation of the multiple electromagnetic drawing assemblies 3 can be realized.
Further, in order to prevent loosening between the screw and the nut during use, a plurality of retaining protrusions 231 uniformly distributed on the circumferential direction of the end surface of the second engagement surface 112 of the nut 230 and the tensioning plate 110 may be disposed, and a plurality of retaining grooves matched with the retaining protrusions may be disposed on the second engagement surface 112.
A similar structure may also be provided on the compression surface of the large end 220 and the first engagement surface 113.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an appearance is drawn in electromagnetic induction, includes concrete block (1) and stock (2), its characterized in that: one end of the anchor rod (2) is pre-buried in the concrete block (1), the other end of the anchor rod (2) passes through the top surface of the concrete block (1) to reach the outside of the concrete block (1), the outside of the concrete block (1) positioned in the anchor rod (2) is provided with electromagnetic drawing assemblies (3), the number of the electromagnetic drawing assemblies (3) is two groups, the electromagnetic drawing assemblies (3) are sequentially and linearly arranged from top to bottom outside the anchor rod (2), the electromagnetic drawing assemblies (3) comprise an installation shell (4) and an electromagnet assembly (5), an installation cavity (6) is formed in the installation shell (4), one side of the installation cavity (6) is open with the corresponding position of the installation shell (4), the electromagnet assembly (5) is fixedly installed in the installation cavity (6), one side of the opening of the two groups of the electromagnetic drawing assemblies (3) is opposite, one side of the electromagnetic drawing assemblies (3) away from the concrete block (1) is provided with an anchor assembly (7), the electromagnet assembly (5), the electromagnet assembly (4) and the anchor rod (2) are provided with through holes corresponding to the installation cavity (8), the anchor rod (2) is positioned at the outer end of the concrete block (1) and sequentially penetrates through the limiting through holes (8) of the two groups of electromagnetic drawing assemblies (3) and the limiting through holes (8) of the anchor (7) to the outer side of the anchor (7), a supporting plate (9) is fixedly arranged on the bottom surface of the anchor (7), threaded through holes (10) are formed in the surface of the anchor (7) and the corresponding positions of the anchor rod (2), the anchor rod is fixed through the limiting screw (11) in a threaded mode, and an elastic buffer assembly (12) is arranged on one side, far away from the opening, of the installation shell (4);
The elastic buffer assembly (12) comprises a limit mounting plate (13) and an elastic buffer pad (14), an annular connecting lug (15) is fixedly mounted on one side surface of the limit mounting plate (13), a positioning chute (16) corresponding to the annular connecting lug (15) is formed in the bottom surface of the mounting shell (4), corresponding thread layers are arranged on the side wall surfaces of the annular connecting lug (15) and the two side wall surfaces of the positioning chute (16), the two are fixed through the thread layers, and the elastic buffer pad (14) is arranged on one side, far away from the mounting shell (4), of the limit mounting plate (13;
The electromagnet assemblies (5) of the two groups of electromagnetic drawing assemblies (3) are electrically connected with the power supply device through wires, and an adjusting switch is arranged between the two groups of electromagnetic drawing assemblies and the power supply device, and is a rheostat.
2. An electromagnetic induction pullout machine as claimed in claim 1, wherein: an adhesive bonding layer (17) is arranged between the elastic cushion pad (14) and the limiting mounting plate (13), and the elastic cushion pad (14) is fixedly bonded on the surface of the limiting mounting plate (13) through the adhesive bonding layer (17).
3. An electromagnetic induction pullout machine as claimed in claim 1, wherein: a clamping assembly is arranged at one end surface of the two electromagnetic drawing assemblies (3) which are far away from each other, the clamping assembly is tightly propped against the electromagnetic drawing assemblies (3), the electromagnetic drawing assemblies comprise two clamping hoops (100), tensioning plates (110) are respectively arranged at two ends of each clamping hoop (100), clamping through holes (111) are formed in the tensioning plates (110), a fixing ring (300) is fixed on the inner side of each clamping hoop (100), and elastic clamping teeth (310) are arranged on the side surface, contacted with the anchor rod (2), of each fixing ring (300); one end of a screw rod (210) of the bolt (200) penetrates through clamping through holes (111) corresponding to the two clamping hoops, the large end (220) of the bolt (200) is pressed tightly with the first clamping surface (113) of one tensioning plate (110), and one end, far away from the large end, of the bolt is assembled with a nut (230) through threaded screwing.
4. An electromagnetic induction pullout machine as claimed in claim 3, wherein: the elastic latch (310) is made of an elastic material.
5. An electromagnetic induction pullout machine as claimed in claim 3, wherein: the fixing ring is fixed on the inner side of the clamp through gluing.
6. An electromagnetic induction pullout machine as claimed in claim 3, wherein: the end face of the nut (230) pressed against the second clamping surface (112) of the tensioning plate (110) is provided with a plurality of backstop bulges (231) uniformly distributed on the circumference of the end face, and the second clamping surface (112) is provided with a plurality of backstop grooves matched with the backstop bulges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711451867.9A CN107907419B (en) | 2017-12-28 | 2017-12-28 | Electromagnetic induction drawing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711451867.9A CN107907419B (en) | 2017-12-28 | 2017-12-28 | Electromagnetic induction drawing instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107907419A CN107907419A (en) | 2018-04-13 |
| CN107907419B true CN107907419B (en) | 2024-05-07 |
Family
ID=61871658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711451867.9A Active CN107907419B (en) | 2017-12-28 | 2017-12-28 | Electromagnetic induction drawing instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107907419B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185030A (en) * | 2019-05-13 | 2019-08-30 | 深圳钜联锚杆技术有限公司 | A kind of cage core assembly, pouch component, bag type paste anchor pole and its assemble method |
| CN115852792A (en) * | 2023-02-20 | 2023-03-28 | 山西首科工程质量检测有限公司 | Concrete road surface roughness test equipment |
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|---|---|---|---|---|
| KR200221796Y1 (en) * | 2000-11-22 | 2001-04-16 | 주식회사서영기술단 | a suport unit of rock bolt drawn tester |
| KR20030006257A (en) * | 2001-07-12 | 2003-01-23 | (주)지오넷 | Reaction device for rockbolt pull-out test |
| KR20100136135A (en) * | 2009-06-18 | 2010-12-28 | 한국건설기술연구원 | Automatic drawing test machine for rock bolt |
| CN204247753U (en) * | 2014-10-28 | 2015-04-08 | 浙江吉利控股集团有限公司 | A kind of panel beating pit reparation electromagnetism drawbench |
| CN107130651A (en) * | 2017-07-10 | 2017-09-05 | 河北建科唐秦建筑科技有限公司 | The detection means and its detection method of anchor pole internal force exterior measuring |
| CN207610930U (en) * | 2017-12-28 | 2018-07-13 | 山西首科工程质量检测有限公司 | A kind of electromagnetic induction drawing instrument |
-
2017
- 2017-12-28 CN CN201711451867.9A patent/CN107907419B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200221796Y1 (en) * | 2000-11-22 | 2001-04-16 | 주식회사서영기술단 | a suport unit of rock bolt drawn tester |
| KR20030006257A (en) * | 2001-07-12 | 2003-01-23 | (주)지오넷 | Reaction device for rockbolt pull-out test |
| KR20100136135A (en) * | 2009-06-18 | 2010-12-28 | 한국건설기술연구원 | Automatic drawing test machine for rock bolt |
| CN204247753U (en) * | 2014-10-28 | 2015-04-08 | 浙江吉利控股集团有限公司 | A kind of panel beating pit reparation electromagnetism drawbench |
| CN107130651A (en) * | 2017-07-10 | 2017-09-05 | 河北建科唐秦建筑科技有限公司 | The detection means and its detection method of anchor pole internal force exterior measuring |
| CN207610930U (en) * | 2017-12-28 | 2018-07-13 | 山西首科工程质量检测有限公司 | A kind of electromagnetic induction drawing instrument |
Non-Patent Citations (1)
| Title |
|---|
| 隧道锚杆拉拔试验测试方法的改进与研究;邓超;吴琼;郑卫华;;福建交通科技(06);全文 * |
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| CN107907419A (en) | 2018-04-13 |
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