CN104236837A - Load impact experimental system and application method thereof - Google Patents
Load impact experimental system and application method thereof Download PDFInfo
- Publication number
- CN104236837A CN104236837A CN201410424421.7A CN201410424421A CN104236837A CN 104236837 A CN104236837 A CN 104236837A CN 201410424421 A CN201410424421 A CN 201410424421A CN 104236837 A CN104236837 A CN 104236837A
- Authority
- CN
- China
- Prior art keywords
- rod
- load
- experimental system
- shaped connectors
- base
- 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
- 238000000034 method Methods 0.000 title claims description 8
- 230000035939 shock Effects 0.000 claims description 28
- 239000000725 suspension Substances 0.000 claims description 16
- 239000011888 foil Substances 0.000 claims description 13
- 238000012360 testing method Methods 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a load impact experimental system used for measuring the impact resistance of a rod-shaped connection body under the tension load. The load impact experimental system comprises a top beam, a base, stand columns, a hanging device, a tensioning and pre-tightening device, a load-bearing tray and a heavy hammer. The stand columns are arranged between the top beam and the base and used for supporting the top beam and the base. The hanging device is arranged on the top beam and used for fixing one end of the rod-shaped connection body. The tensioning and pre-tightening device is arranged on the base and used for fixing the other end of the rod-shaped connection body and providing tension loads for the rod-shaped connection body. The load-bearing tray is used for providing a force point for the rod-shaped connection body. The heavy hammer is used for exerting impact force on the load-bearing tray. When the load impact experiment is conducted through the load impact experimental system, the load impact experimental system more conforms to the practical rule of field use, the impact resistance of the rod-shaped connection body under the composite stress is truly measured, and true and accurate reference data are provided for field construction.
Description
Technical field
The present invention relates to the technical field of the load-bearing capacity when body of rod of test under tension load or rope body are subject to moment impact, specifically refer to a kind of load shock experimental system and using method thereof.
Background technology
Load shock experimental system is domestic and international brand-new experimental technique, meets mine scene simultaneously and impacts product experimental performance.
Load shock experimental system adds loading equipemtn exactly in original impact experiment system, impact experiment is met on-the-spot actual.The anchor pole at mine scene or cable bolting product (body of rod trial target) are when being subject to shock load, be not to existing impact experiment, the body of rod such as anchor pole or anchor cable trial target is unloaded lotus (namely not under tension load), and the body of rod trial targets such as general on-the-spot anchor pole or anchor cable receive the rock pressure of 10-20 ton pretightning force or roadway support.The impact resistance of unloaded anchor pole or anchor cable is far smaller than in actual applications by the anchor pole of load or anchor cable anti-impact force.Cause experimental data and rig-site utilization not to meet, existing urgent need improves experimental system, makes experimental system meet rig-site utilization.
Summary of the invention
The present invention proposes a kind of load shock experimental system and using method thereof, for testing the impact resistance of rod-shaped connectors under under tension loading condition, solve the problem that prior art can not test impact resistance under rod-shaped connectors under tension loading condition.
Basic thought of the present invention is: install stretch-draw pre-tightening apparatus in tension weight churning tester base, for applying predetermined pull to rod-shaped connectors, by the rod-shaped connectors such as anchor pole or anchor cable test sample when not being hit, apply pretightning force, sample is subject to and rig-site utilization same load (namely anchor pole or anchor cable are first subject to 10-20 ton prefastening force); Test this rod-shaped connectors load that test sample withstands shocks such as the anchor pole by tensile load or anchor cable so again, more will meet on-site actual situations.
Technical scheme of the present invention is achieved in that
A kind of load shock experimental system, for testing the impact resistance of rod-shaped connectors under under tension loading condition, comprising: back timber; Base; Column, it is arranged between back timber and base, for supporting top beam and base; Suspension apparatus, it is arranged on back timber, for one end of fixing shaft connector; Stretch-draw pre-tightening apparatus, it is arranged on base, for the other end of fixing shaft connector, and provides tensile load for rod-shaped connectors; Bearing tray, it is for providing center of effort for rod-shaped connectors; Weight, it is for applying impulsive force to bearing tray.
In preferred scheme, back timber, column and base form load shock experimental system framework; Weight relies on gravity to apply impulsive force along the bearing of trend of rod-shaped connectors to bearing tray.
In preferred scheme, rod-shaped connectors is anchor pole, anchor cable, pole stock or rope.
In preferred scheme, stretch-draw pre-tightening apparatus, for having cavity structure hydraulic lifting jack, comprising: hydraulic cylinder, cone locking device, connect supporting base and with the wall portion being connected supporting base and connecting; Connection supporting base and wall portion form described cavity structure, and cone locking device is connected with hydraulic cylinder and extends in described cavity structure, and cone locking device comprises the cavity allowing rod-shaped connectors to pass; Stretch-draw pre-tightening apparatus, when being in locking state, gripping rod-shaped connectors, and provides tensile load to rod-shaped connectors.
In preferred scheme, cone locking device comprises: spring base, the connection overcoat be connected with spring base, the cone-shaped clip that one end is arranged on the thrust spring in spring base and is connected with the thrust spring other end; Thrust spring promotes cone-shaped clip in a relaxed state, and cone-shaped clip is stuck in and connects outer putting, and provides axial tension load to rod-shaped connectors simultaneously.
In preferred scheme, described load shock experimental system also comprises the piston be connected with wall portion, and hydraulic cylinder comprises the first hydraulic cavities and the second hydraulic cavities, and the first hydraulic cavities and the second hydraulic cavities can make piston move back and forth to contrary both direction.
In preferred scheme, bearing tray is provided with the foil gauge for detecting stressed size or pressure transducer.
In preferred scheme, suspension apparatus is provided with the foil gauge for detecting stressed size or pulling force sensor.
A using method for above-mentioned load shock experimental system, comprises the steps:
1) be fixed on suspension apparatus by rod-shaped connectors one end, the other end is fixed on stretch-draw pre-tightening apparatus;
2) bearing tray be arranged on rod-shaped connectors and lock bearing tray;
3) tensile load is provided by stretch-draw pre-tightening apparatus to rod-shaped connectors;
4) discharge weight, weight is dropped on bearing tray and applies impulsive force to bearing tray;
5) state of rod-shaped connectors is detected.
In a preferred approach, suspension apparatus and bearing tray are provided with foil gauge, perform step 6 after step 5:
6) the mechanical property tracing analysis rod-shaped connectors impact resistance in compound stress situation observing the foil gauge on suspension apparatus and bearing tray transform out.
Beneficial effect of the present invention is:
Carry out load shock experiment by the present invention, more will meet the actual rule of onsite application, authentic testing goes out the ability that to withstand shocks under rod-shaped connectors is subject to compound stress situation, provides reference data really and accurately to site operation.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the load shock experimental system of the embodiment of the present invention;
Fig. 2 is the pre-tightening apparatus of stretch-draw shown in Fig. 1 schematic diagram in a relaxed state;
Fig. 3 is the pre-tightening apparatus of stretch-draw shown in Fig. 2 schematic diagram in the locked condition.
Description of reference numerals:
Back timber 101, column 102, base 103, suspension apparatus 104, stretch-draw pre-tightening apparatus 105, weight 106, rod-shaped connectors 107, bearing tray 108, connection supporting base 201, hydraulic cylinder 202, cone locking device 203, wall portion 204, cone-shaped clip 301, thrust spring 302, connection overcoat 303, piston 304, spring base 305, first hydraulic cavities 306 and the second hydraulic cavities 307.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Thering is provided a kind of load shock experimental system see Fig. 1 to Fig. 3 the present embodiment, for testing the impact resistance of rod-shaped connectors 107 under under tension loading condition, comprising: back timber 101; Base 103; Column 102, it is arranged between back timber 101 and base 103, for supporting top beam 101 and base 103; Suspension apparatus 104, it is arranged on back timber 101, for one end of fixing shaft connector 107; Stretch-draw pre-tightening apparatus 105, it is arranged on base 103, for the other end of fixing shaft connector 107, and provides tensile load for rod-shaped connectors 107; Bearing tray 108, it is for providing center of effort for rod-shaped connectors 107; Weight 106, it is for applying impulsive force to bearing tray 108.Preferably, rod-shaped connectors 107 is anchor pole, anchor cable, pole stock or rope.
Impulsive force size can be changed by the height of the weight or relative bearing tray 108 that change weight 106.By judge rod-shaped connectors 107 whether the state such as breakage, fracture check the impulsive force ability to bear of rod-shaped connectors 107, because this inspection is carried out under rod-shaped connectors 107 under tension load condition, so result will be more realistic, more accurately.Preferably, bearing tray 108 is provided with the foil gauge for detecting stressed size or pressure transducer; Suspension apparatus is provided with the foil gauge for detecting stressed size or pulling force sensor.Rod-shaped connectors 107 stressing conditions and impact condition can be checked by foil gauge distortion measurement.
Preferably, back timber 101, column 102 and base 103 form load shock experimental system framework; Weight 106 relies on gravity to apply impulsive force along the bearing of trend of rod-shaped connectors 107 to bearing tray 108.
Preferably, stretch-draw pre-tightening apparatus 105, for having cavity structure hydraulic lifting jack, comprising: hydraulic cylinder 202, cone locking device 203, connect supporting base 201 and with the wall portion 204 being connected supporting base 201 and connecting; Connection supporting base 201 and wall portion 204 form cavity structure, and cone locking device 203 is connected with hydraulic cylinder 202 and extends in cavity structure, and cone locking device 203 comprises the cavity allowing rod-shaped connectors 107 to pass; Stretch-draw pre-tightening apparatus 105, when being in locking state, gripping rod-shaped connectors 107, and provides tensile load to rod-shaped connectors 107.
Concrete, cone locking device 203 comprises: spring base 305, the connection overcoat 303 be connected with spring base 305, the cone-shaped clip 301 that one end is arranged on the thrust spring 302 in spring base 305 and is connected with thrust spring 302 other end; Thrust spring 302 promotes cone-shaped clip 301 in a relaxed state, and cone-shaped clip 301 is stuck in and connects on overcoat 303, provides axial tension load to rod-shaped connectors 107 simultaneously.In a relaxed state, connect the projection that supporting base 201 comprises and withstand cone-shaped clip 301, thrust spring 302 is compressed, cone-shaped clip 301 is separated with connection overcoat 303, unclamps rod-shaped connectors 107 simultaneously.Rod-shaped connectors 107 is gripped by spring 302 thrust and the locking of hydraulic cylinder 202 pulling force acting in conjunction cone-shaped clip 301, and the size of tensile load can be decided by the second hydraulic cavities 307 hydraulic coupling of hydraulic cylinder 202.
Preferably, the present embodiment also comprises the piston 304 be connected with wall portion 204, and hydraulic cylinder 202 comprises the first hydraulic cavities 306 and the second hydraulic cavities 307, first hydraulic cavities 306 and the second hydraulic cavities 307 can make piston 304 move back and forth to contrary both direction.During to the first hydraulic cavities 306 injection pressure, spring base 305 and hydraulic cylinder 202 rise, connect supporting base 201 to be connected and fixed motionless (piston 304 also maintains static) with base 103, the projection simultaneously connected on supporting base 201 compresses promotion cone-shaped clip 301 and shrinks, cone-shaped clip 301 promotes spring 302 and shrinks along the interior tapered chamber connecting overcoat 303, reaches the effect that the protruding thrust cone-shaped clip 301 connect on supporting base 201 unclamps rod-shaped connectors 107; During to the second hydraulic cavities 307 injection pressure, spring base 305 and hydraulic cylinder 202 decline, be with flexible spring seat 305 with cone locking device 203 gradually away from being connected supporting base 201, projection on connection supporting base 201 and cone-shaped clip 301 are separated, reaches the effect of spring 302 thrust and hydraulic cylinder 202 pulling force acting in conjunction cone-shaped clip 301 clamping gripping rod-shaped connectors 107.
The embodiment of the present invention also provides a kind of using method of above-mentioned load shock experimental system, comprises the steps:
1) be fixed on suspension apparatus 104 by rod-shaped connectors 107 one end, the other end is fixed on stretch-draw pre-tightening apparatus 105;
2) bearing tray 108 be arranged on rod-shaped connectors 107 and lock bearing tray 108;
3) tensile load is provided by stretch-draw pre-tightening apparatus 105 to rod-shaped connectors 107;
4) discharge weight 106, weight 106 is dropped on bearing tray 108 and applies impulsive force to bearing tray 108;
5) state of rod-shaped connectors 107 is detected.
When suspension apparatus 104 and bearing tray 108 are provided with foil gauge, also comprise the steps:
6) mechanical property tracing analysis rod-shaped connectors 107 impact resistance in compound stress situation observing the foil gauge on suspension apparatus 104 and bearing tray 108 transform out.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a load shock experimental system, for testing rod-shaped connectors (107) impact resistance under under tension loading condition, is characterized in that, comprise: back timber (101); Base (103); Column (102), it is arranged between back timber (101) and base (103), for supporting top beam (101) and base (103); Suspension apparatus (104), it is arranged on back timber (101), for one end of fixing shaft connector (107); Stretch-draw pre-tightening apparatus (105), it is arranged on base (103), for the other end of fixing shaft connector (107), and provides tensile load for rod-shaped connectors (107); Bearing tray (108), it is for providing center of effort for rod-shaped connectors (107); Weight (106), it is for applying impulsive force to bearing tray (108).
2. a kind of load shock experimental system according to claim 1, is characterized in that, back timber (101), column (102) and base (103) form load shock experimental system framework; Weight (106) relies on gravity to apply impulsive force along the bearing of trend of rod-shaped connectors (107) to bearing tray (108).
3. a kind of load shock experimental system according to claim 1, is characterized in that, rod-shaped connectors (107) is anchor pole, anchor cable, pole stock or rope.
4. a kind of load shock experimental system according to claim 1, it is characterized in that, stretch-draw pre-tightening apparatus (105) is for having cavity structure hydraulic lifting jack, comprise: hydraulic cylinder (202), cone locking device (203), connect supporting base (201) and with the wall portion (204) being connected supporting base (201) and connecting; Connection supporting base (201) and wall portion (204) form described cavity structure, cone locking device (203) is connected with hydraulic cylinder (202) and extends in described cavity structure, and cone locking device (203) comprises the cavity allowing rod-shaped connectors (107) to pass; Stretch-draw pre-tightening apparatus (105), when being in locking state, gripping rod-shaped connectors (107), and provides tensile load to rod-shaped connectors (107).
5. a kind of load shock experimental system according to claim 4, it is characterized in that, cone locking device (203) comprising: spring base (305), the connection overcoat (303) be connected with spring base (305), the cone-shaped clip (301) that one end is arranged on the thrust spring (302) in spring base (305) and is connected with thrust spring (302) other end; Thrust spring (302) promotes cone-shaped clip (301) in a relaxed state, cone-shaped clip (301) is stuck in and connects on overcoat (303), provides axial tension load to rod-shaped connectors (107) simultaneously.
6. a kind of load shock experimental system according to claim 4, it is characterized in that, also comprise the piston (304) be connected with wall portion (204), hydraulic cylinder (202) comprises the first hydraulic cavities (306) and the second hydraulic cavities (307), and the first hydraulic cavities (306) and the second hydraulic cavities (307) can make piston (304) move back and forth to contrary both direction.
7. a kind of load shock experimental system according to claim 1, is characterized in that, bearing tray (108) is provided with the foil gauge for detecting stressed size.
8. a kind of load shock experimental system according to claim 1, is characterized in that, suspension apparatus (104) is provided with the foil gauge for detecting stressed size.
9. a using method for the load shock experimental system according to any one of claim 1-8, is characterized in that, comprise the steps:
1) be fixed on suspension apparatus (104) by rod-shaped connectors (107) one end, the other end is fixed on stretch-draw pre-tightening apparatus (105);
2) bearing tray (108) be arranged on rod-shaped connectors (107) and lock bearing tray (108);
3) tensile load is provided by stretch-draw pre-tightening apparatus (105) to rod-shaped connectors (107);
4) discharge weight (106), weight (106) is dropped on bearing tray (108) and applies impulsive force to bearing tray (108);
5) state of rod-shaped connectors (107) is detected.
10. the using method of load shock experimental system according to claim 9, is characterized in that, suspension apparatus (104) and bearing tray (108) is provided with foil gauge, also comprises the steps:
6) mechanical property tracing analysis rod-shaped connectors (107) impact resistance in compound stress situation observing the foil gauge on suspension apparatus (104) and bearing tray (108) transform out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410424421.7A CN104236837B (en) | 2014-08-26 | 2014-08-26 | A kind of load shock experimental system and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410424421.7A CN104236837B (en) | 2014-08-26 | 2014-08-26 | A kind of load shock experimental system and its application method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104236837A true CN104236837A (en) | 2014-12-24 |
| CN104236837B CN104236837B (en) | 2018-09-07 |
Family
ID=52225356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410424421.7A Active CN104236837B (en) | 2014-08-26 | 2014-08-26 | A kind of load shock experimental system and its application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104236837B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197925A (en) * | 2016-06-24 | 2016-12-07 | 河南工程学院 | A kind of hydraulic support apparatus for impact testing |
| CN108133645A (en) * | 2017-12-18 | 2018-06-08 | 安徽工程大学 | A kind of impact experiment apparatus and experimental method |
| CN110513377A (en) * | 2019-09-19 | 2019-11-29 | 中国科学院武汉岩土力学研究所 | Locking devices and impact devices |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU800808A1 (en) * | 1978-12-20 | 1981-01-30 | Ордена Ленина И Ордена Трудовогокрасного Знамени Предприятиеп/Я Г-4725 | Device for testing materials for impact tension |
| US20040261494A1 (en) * | 2003-06-24 | 2004-12-30 | Lee Kun Ta | Impact generating device for impact tester |
| CN102221443A (en) * | 2011-04-07 | 2011-10-19 | 太原理工大学 | Axial force loading device of test piece during lateral impact process |
| CN102279135A (en) * | 2011-07-06 | 2011-12-14 | 湖南科技大学 | Lossless dynamic detection apparatus and method for anchor pile drawing force |
| CN202101909U (en) * | 2011-07-06 | 2012-01-04 | 湖南科技大学 | Anchor rod drawing force lossless dynamic detecting device |
| CN202372410U (en) * | 2011-11-29 | 2012-08-08 | 中国科学院武汉岩土力学研究所 | Anchor rod performance test device |
| CN102636397A (en) * | 2012-04-19 | 2012-08-15 | 山西潞安环保能源开发股份有限公司 | Device and method for rapidly testing comprehensive mechanical properties of anchor bolt |
| WO2013143145A1 (en) * | 2012-03-31 | 2013-10-03 | 中国矿业大学(北京) | Dynamics performance testing system |
| CN203732235U (en) * | 2014-01-22 | 2014-07-23 | 沈阳工业大学 | Bolt impact fatigue testing machine |
-
2014
- 2014-08-26 CN CN201410424421.7A patent/CN104236837B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU800808A1 (en) * | 1978-12-20 | 1981-01-30 | Ордена Ленина И Ордена Трудовогокрасного Знамени Предприятиеп/Я Г-4725 | Device for testing materials for impact tension |
| US20040261494A1 (en) * | 2003-06-24 | 2004-12-30 | Lee Kun Ta | Impact generating device for impact tester |
| CN102221443A (en) * | 2011-04-07 | 2011-10-19 | 太原理工大学 | Axial force loading device of test piece during lateral impact process |
| CN102279135A (en) * | 2011-07-06 | 2011-12-14 | 湖南科技大学 | Lossless dynamic detection apparatus and method for anchor pile drawing force |
| CN202101909U (en) * | 2011-07-06 | 2012-01-04 | 湖南科技大学 | Anchor rod drawing force lossless dynamic detecting device |
| CN202372410U (en) * | 2011-11-29 | 2012-08-08 | 中国科学院武汉岩土力学研究所 | Anchor rod performance test device |
| WO2013143145A1 (en) * | 2012-03-31 | 2013-10-03 | 中国矿业大学(北京) | Dynamics performance testing system |
| CN102636397A (en) * | 2012-04-19 | 2012-08-15 | 山西潞安环保能源开发股份有限公司 | Device and method for rapidly testing comprehensive mechanical properties of anchor bolt |
| CN203732235U (en) * | 2014-01-22 | 2014-07-23 | 沈阳工业大学 | Bolt impact fatigue testing machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197925A (en) * | 2016-06-24 | 2016-12-07 | 河南工程学院 | A kind of hydraulic support apparatus for impact testing |
| CN108133645A (en) * | 2017-12-18 | 2018-06-08 | 安徽工程大学 | A kind of impact experiment apparatus and experimental method |
| CN110513377A (en) * | 2019-09-19 | 2019-11-29 | 中国科学院武汉岩土力学研究所 | Locking devices and impact devices |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104236837B (en) | 2018-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10684111B2 (en) | Non-destructive detection method and device of effective anchorage depth of full-length bonding anchor | |
| CN103471941B (en) | Anchor rod shock resistance simulation test system | |
| CN202735156U (en) | Test platform for anchor rod stress state test | |
| CN110593953A (en) | Device and method for testing impact resistance characteristics of roadway support system under simulated rockburst conditions | |
| CN204575314U (en) | A kind of test unit studying deep water suction anchor bearer properties | |
| CN104165838B (en) | A kind of experimental provision impacting drawing and experimental technique | |
| CN104236837A (en) | Load impact experimental system and application method thereof | |
| CN110320108A (en) | A kind of experimental provision and application method of solid propellant endurance assessment identification | |
| CN105547871A (en) | Experimental apparatus and method for static-pressure rock impact tunnel destroy | |
| CN106323751A (en) | Multiaxial pulling-pressing loading system for testing mechanical properties of defective materials with cracks | |
| KR101285439B1 (en) | Performance Tester and the Methods of Spring Hanger | |
| CN103278384A (en) | Testing device and measuring method for anchorage performance of coal and rock mass in coal mine tunnel | |
| CN106556536A (en) | A kind of rock triaxial tension and compression experimental rig that can be used in new triaxial test equipment | |
| CN106289977B (en) | A kind of bolt concrete tensile test device and test method | |
| CN105372118A (en) | Cylindrical test specimen lateral dynamic uniform distribution load testing apparatus | |
| CN112763581A (en) | Multi-strain-rate disturbance outburst simulation test system and method in roadway pressure-maintaining excavation process | |
| CN111678807A (en) | Device and method for rock dynamic shear strength under pre-normal stress condition | |
| CN109100232B (en) | Testing device for detecting vertical bearing capacity of climbing cone of bridge tower and using method | |
| CN103471801B (en) | Deep-buried tunnel rock burst simulation test system and testing method thereof | |
| CN111733899B (en) | Real-time safety monitoring method for pile top in static load test process of concrete cast-in-place pile | |
| CN205719364U (en) | Suspension roof support bearing capacity device for quick testing | |
| CN206095771U (en) | Many axial tension that contain crack defect component press loading device | |
| CN205861460U (en) | flat anchor rod drawing instrument | |
| JP2013117092A (en) | Load testing method for soil cement column row wall | |
| CN103630445A (en) | Concrete core sample bending testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 271000 north of Fengxiang Road, Tai'an high tech Zone, Tai'an, Shandong. Patentee after: YOULUOKA (SHANDONG) MINING INDUSTRY TECHNOLOGY Co.,Ltd. Address before: 271000 north of Fengxiang Road, Tai'an high tech Zone, Tai'an, Shandong. Patentee before: Euloka (Shandong) Environmental Engineering Co.,Ltd. Address after: 271000 north of Fengxiang Road, Tai'an high tech Zone, Tai'an, Shandong. Patentee after: Euloka (Shandong) Environmental Engineering Co.,Ltd. Address before: 271000 north of Fengxiang Road, Tai'an high tech Zone, Tai'an, Shandong. Patentee before: UROICA (SHANDONG) DEEP GROUND PRESSURE CONTROL AND SAFETY TECHNOLOGY CO.,LTD. |
|
| CP01 | Change in the name or title of a patent holder |