CN105781599A - Energy absorption anchor rod tray - Google Patents
Energy absorption anchor rod tray Download PDFInfo
- Publication number
- CN105781599A CN105781599A CN201610342003.2A CN201610342003A CN105781599A CN 105781599 A CN105781599 A CN 105781599A CN 201610342003 A CN201610342003 A CN 201610342003A CN 105781599 A CN105781599 A CN 105781599A
- Authority
- CN
- China
- Prior art keywords
- energy
- pallet
- absorbing
- section
- tearing
- 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
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 22
- 230000036316 preload Effects 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 12
- 239000010410 layer Substances 0.000 abstract 7
- 238000005336 cracking Methods 0.000 abstract 2
- 239000011229 interlayer Substances 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0093—Accessories
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses an energy absorption anchor rod tray which comprises a double-layer disk-type tray body capable of moving along an anchor rod and a pre-tightening nut which is in threaded connection to the exposed end of the anchor rod, wherein a hollow disk-type guide slot is formed between an upper-layer disk-type tray and a lower-layer disk-type tray of the double-layer disk-type tray body through an interlayer gasket; an energy absorption pipe sleeving the anchor rod is arranged between the pre-tightening nut and the double-layer disk-type tray body and consists of a tear energy absorption section and a tear pre-tightening section; the lower part of the tear pre-tightening section penetrates through a central hole of the upper-layer disk-type tray and then presses an energy absorption pipe alignment table around a central hole of the lower-layer disk-type tray through a chamfer; pre-cracked line slots are formed in the chamfer in a spacing manner; cracking supporting knives corresponding to the pre-cracked line slots are arranged at the outer edge of the energy absorption pipe alignment table. Under an impact load, the energy absorption tray can realize continuous and stable yielding energy absorption through shaft cracking yielding of the energy absorption pipe; when matched with the high-strength anchor rod, the energy absorption tray can effectively support and protect surrounding rock with high impact trend.
Description
Technical field
The present invention relates to the underground engineering safety support technology such as mine and tunnel, particularly a kind of for Underground Roadway Bolts supporting has allow pressure energy-absorbing function anchor rod pallet board.
Background technology
In Underground Roadway Bolts supporting, anchor rod pallet board is a vitals in Bolt System.Its effect is, on the one hand by compressing pallet to anchor pole Shi Hanzhang, and makes prestressing force be diffused in the coal and rock around anchor pole, it is achieved the active of anchor pole, immediate support；Surrouding rock deformation makes load act on pallet on the other hand, transfers loads to anchor rod body by pallet, and the load of anchor pole change is diffused in country rock further through pallet, thus improving the stress state of country rock, deformation controlling for rock surrounding gateways and destruction.
For the high-ground stress tunnel of suspension roof support, the strength and stiffness for better realizing anchor rod system and country rock couple, and the design of anchor rod system should provide enough bearing capacities, and realize stepping down pressure energy-absorbing again.And the anchor rod pallet board that colliery uses at present, stress state to anchor nut termination when being mostly conceived to improve pallet action of static load including plate shaped pallet, cast iron pallet, butterfly pallet and M shape pallet etc., and have ignored the pressure energy absorption characteristics of stepping down by pallet and solve in mine laneway anchor rod pallet board under impact loading the technical problem of deformation unloading suddenly or fracture easily occurs.A kind of underground mine use anchor rod pallet board as disclosed in Chinese patent that application number is 201310686070.2, this pallet only considers the optimization of action of static load lower tray intensity and structure, though the bending strength of pallet can be improved, increase the supporting area of pallet, but do not possess the energy-absorbing erosion control destruction characteristic that anti-dynamic load is impacted.Application number be 201210210850.5 Chinese patent disclosed in double-layer anchor plate, solution be engineering construction time protection anchor pole screw thread avoid destroying, making the technical problem of the repeatable utilization of anchor pole, do not possess protecting against shock invalidation functions yet.Application number is the disclosed a kind of persistence progressive yielding anchor rod pallet board of Chinese patent of 201010515672, by allowing the butterfly pallet body of pressure groove and the extruding of country rock wall step down with multi-turn is circular, though making it have certain pressure characteristic that allows, but allow and press through journey resistance instability, easily extruding is caused to scratch damage on country rock, make wall rock loosening, cause that anchor pole lost efficacy；And this pallet can not reuse；Groove processing difficulty.
Summary of the invention
For the defect that prior art exists, it is an object of the invention to provide that a kind of impact loading lower tray is not susceptible to deformation unloading or fracture, adaptive deformation ability is strong, can continue to allow the energy-absorption anchor rod pallet of pressure.
For achieving the above object, energy-absorption anchor rod pallet provided by the invention, including being enclosed within anchor pole, can along the double-deck butterfly pallet body that anchor pole moves and the pre-load nut being threaded in anchor pole exposed junction；
Described double-deck butterfly pallet body is made up of upper strata butterfly pallet and lower floor's butterfly pallet, and between upper strata butterfly pallet and lower floor's butterfly pallet, Sandwich washer by welding together with upper strata butterfly pallet and lower floor's butterfly pallet outer rim forms the dish-shaped gathering sill of hollow；
nullHave between described pre-load nut and double-deck butterfly pallet body and be enclosed within anchor pole the energy absorbing tube of (keeping certain interval with anchor pole outer wall)，This energy absorbing tube is made up of the pretension section of tearing tearing energy-absorbing section and external diameter less than tearing energy-absorbing section，The total length tearing energy-absorbing section and tear pretension section is identical with the degree of depth of described gathering sill，The length wherein tearing pretension section is 10～15mm，The external diameter tearing energy-absorbing section is slightly less than the centre bore aperture of upper strata butterfly pallet (guarantee is torn energy-absorbing section and can be slided along the centre bore of upper strata butterfly pallet)，The pipe thickness tearing energy-absorbing section is slightly less than the thickness of described gathering sill (guarantee is torn after the tube wall of energy-absorbing section is torn and can be slided along gathering sill)，There is chamfering the lower end tearing pretension section，Tear the pretension pars infrasegmentalis centre bore through upper strata butterfly pallet，Press on the energy absorbing tube core-regulating platform of lower floor's butterfly pallet centre bore periphery by its chamfering，Chamfering has the equally distributed one group of presplitting wire casing in interval，Outer rim at energy absorbing tube core-regulating platform has one group of corresponding presplitting wire casing to help to split cutter.
The outer wall tearing energy-absorbing section of described energy absorbing tube there is axially arranged energy-absorbing tear rule, tear energy-absorbing section with its monitoring and tear energy-absorbing and step down stroke.
When anchor rod pallet board of the present invention uses, first carry out initially installation (as shown in Figure 1): double-deck butterfly pallet body is enclosed within by its centre bore the root of anchor pole exposed parts, then energy absorbing tube is enclosed within the end of anchor pole, what make energy absorbing tube tears the pretension section lower end centre bore through upper strata butterfly pallet, the chamfering of its end is touched on the energy absorbing tube core-regulating platform being sitting in lower floor's butterfly pallet, and make the presplitting wire casing in chamfering split cutter one_to_one corresponding with helping in energy absorbing tube core-regulating platform outer rim, then pre-load nut is connected with anchor pole end thread, screw pre-load nut, energy absorbing tube is made to be fixed and clamped by pre-load nut, complete initial installation.Then pretension installation (as shown in Figure 2) is carried out: continue to screw pre-load nut, energy absorbing tube is applied pressure, there is expanding plastic deformation in the pretension section of tearing making energy absorbing tube, split cutter by helping its presplitting wire casing in chamfering is torn into radial bar shaped, protrude in the dish-shaped gathering sill of double-deck butterfly pallet body, until the pretension section of tearing of energy absorbing tube all tears in gathering sill, stop screwing pre-load nut, the pretension completing anchor rod pallet board is installed, and comes into operation.
Completing the anchor rod pallet board after pretension is installed, its operation principle is: by choosing material and the size of double-deck butterfly pallet body, and when the material of energy absorbing tube, diameter and pipe thickness make pallet be in the more weak load such as static load at anchor rod system, have enough bearing capacities；When being subject to the strong load such as impact when anchor rod system, the active force tearing energy-absorbing Duan Shouqiang load of energy absorbing tube, first there is a degree of expanding plastic deformation, then split, along the presplitting wire casing generation constant resisting force axle of energy absorbing tube, step down (as shown in Figure 3), rely on plastic deformation and tube wall to tear wave absorption power consumption, it is achieved butterfly pallet body allow pressure energy-absorbing.Meanwhile, the energy-absorbing rule of tearing that energy absorbing tube is torn on energy-absorbing section outer wall is utilized to realize energy absorbing tube and tear energy-absorbing and step down the real-time monitoring of stroke.After energy absorbing tube energy-absorbing whole process effect terminates, the nut squeeze station of energy absorbing tube upper end presses on the inclined-plane port of upper strata butterfly pallet centre bore, makes energy-absorbing pallet continue on for pressure-bearing supporting as common pallet.
The invention has the beneficial effects as follows:
1, the present invention when anchor rod system is subject to shock loading, can be split by energy absorbing tube axle and step down, and makes butterfly pallet body realize allowing pressure energy-absorbing；Energy-absorbing pallet possesses continual and steady energy absorption ability of stepping down, and can effectively prevent pallet impact fracture and unexpected deformation failure, coordinates the effective support being capable of HI high impact tendency country rock with High strength bolt；Under not changing the premise of anchor rod body intensity and structure, it is possible to realize soft rock large deformation, the energy-absorbing of impact large deformation is stepped down.
The mechanical characteristics such as 2, the energy absorbing tube of energy-absorbing pallet of the present invention can realize constant resisting force design, Resistance Value is adjustable, energy-absorbing haul distance is adjustable, so that it is applied to different operating mode geological environment and mechanical environment.
3, the energy absorbing tube of energy-absorbing pallet of the present invention is torn pretension section and can be arranged the pretension of regular length by requirement of engineering and tear stroke, it is ensured that every support anchor rod is subject to identical pretightning force, it is achieved the rockbolt installation method of pretightning force controllable precise；Tear rule by tearing the energy-absorbing on energy-absorbing section outer wall, the energy-absorbing stroke of stepping down of tearing tearing energy-absorbing section can be monitored in real time.
4, energy-absorbing pallet of the present invention can realize recycling and reusing of energy-absorbing pallet by changing energy absorbing tube.
5, energy-absorbing support holder structure of the present invention is simple, easy to process, and performance safety is reliable, and construction technique is simple.
Accompanying drawing explanation
Fig. 1 is the view (axial sectional view) after energy-absorption anchor rod pallet completes initial installation；
Fig. 2 is that energy-absorption anchor rod pallet completes the view (axial sectional view) after pretension is installed；
Fig. 3 is the view (axial sectional view) after energy-absorbing pallet energy-absorbing；
Fig. 4 is the top view (amplification of centre bore position) of double-deck butterfly pallet body in Fig. 1；
Fig. 5 is the schematic diagram of Sandwich washer in Fig. 1；
Fig. 6 is the axial sectional view of energy absorbing tube in Fig. 1；
Fig. 7 is the left view of Fig. 6.
In figure: 1-bilayer butterfly pallet body；2-upper strata butterfly pallet；3-lower floor butterfly pallet；4-Sandwich washer；5-gathering sill；6-helps and splits cutter；7-energy absorbing tube core-regulating platform；8-energy absorbing tube；8-1-(energy absorbing tube) tears pretension section；8-2-(energy absorbing tube) tears energy-absorbing section；9-energy-absorbing tears rule；10-chamfering；11-presplitting wire casing；12-nut squeeze station；13-nut collar；14-pre-load nut；15-anchor pole.
Detailed description of the invention
Below in conjunction with accompanying drawing illustrated embodiment, the invention will be further described.
The present embodiment is the energy-absorbing pallet on certain underground coal mine support anchor rod.Anchor pole is made up of the screw-thread steel of diameter 22mm.
In conjunction with Fig. 1, Fig. 2 and Fig. 4, being enclosed within anchor pole 15, can be foursquare upper strata butterfly pallet 2 along the double-deck butterfly pallet body 1 that anchor pole moves by outer rim and lower floor's butterfly pallet 3 forms, each length of side of square outer rim is 150mm；Outer rim at upper strata butterfly pallet and lower floor's butterfly pallet welds square-outside and round-inside Sandwich washer 4 as shown in Figure 5, the squared exterior edges size of Sandwich washer is identical with upper strata butterfly pallet and lower floor's butterfly pallet physical dimension, the thickness of Sandwich washer is 5mm, the circular port diameter of Sandwich washer, slightly larger than circular diameter at the bottom of the arc of upper strata butterfly pallet and lower floor's butterfly pallet, forms the gathering sill 5 that thickness is identical with the thickness of Sandwich washer, the degree of depth is 100mm between upper strata butterfly pallet and lower floor's butterfly pallet；The centre bore aperture of upper strata butterfly pallet is 36mm, and the port in hole is inclined-plane (inclined-plane is parallel with anchor pole axis)；The aperture of the centre bore of lower floor's butterfly pallet is 24mm, has the energy absorbing tube core-regulating platform 7 of width 2mm around centre bore periphery.
As shown in Figure 1, the nut squeeze station 12 of circular energy absorbing tube 8 upper end that pre-load nut 14 passes through nut collar 13 and be enclosed within anchor pole (keeping 1mm gap with anchor pole outer wall) connects, energy absorbing tube is by tearing energy-absorbing section 8-2 and tearing pretension section 8-1 and form, the length tearing energy-absorbing section is 90mm, the length tearing pretension section is 10mm, and the internal diameter of energy absorbing tube is 29mm, and the external diameter tearing energy-absorbing section is 35mm, the pipe thickness tearing energy-absorbing section is 3mm, and the external diameter tearing pretension section is 32mm；As shown in Figure 6 and Figure 7, there is chamfering 10 lower end tearing pretension section, tear the pretension pars infrasegmentalis centre bore through upper strata butterfly pallet, touch on the energy absorbing tube core-regulating platform being sitting in lower floor's butterfly pallet by its chamfering, chamfering has six presplitting wire casings 11 that uniform intervals is distributed, the outer rim at energy absorbing tube core-regulating platform be provided with six respectively corresponding with presplitting wire casing helping split cutter 6.
Tearing energy-absorbing step down stroke to monitor energy absorbing tube in real time, on the outer wall tearing energy-absorbing section of energy absorbing tube, axially disposed energy-absorbing tears rule 9.
The frictional resistance between pipe bar and double-deck butterfly pallet body gathering sill inwall is torn in order to improve energy absorbing tube, resistance is made to remain stable for, inwall and the inwall of double-deck butterfly pallet body gathering sill of described energy absorbing tube is evenly coated with wear-resisting, shock resistance, corrosion resistant gelatinous coating respectively, such as BD709 impact-resistant abrasion-proof pimpled rubber coating.
Energy-absorption anchor rod pallet of the present invention according to requirement of engineering, can tear the chamfering of pretension section lower end, presplitting wire casing quantity and the material of energy absorbing tube, diameter and pipe thickness etc. by adjusting energy absorbing tube, changes the bearing capacity of energy-absorbing pallet and impacts energy absorption ability.
When using anchor rod pallet board of the present invention, first as it is shown in figure 1, complete the initial installation of energy-absorbing pallet；Then as in figure 2 it is shown, the pretension completing energy-absorbing pallet is installed.When mine laneway generation shock loading, make pallet play pressure energy-absorbing function of stepping down by the energy absorbing tube of energy-absorbing pallet, energy-absorbing terminate after anchor rod pallet board present state as shown in Figure 3, now energy-absorbing pallet can continue on for pressure-bearing supporting as common pallet.
Claims (2)
1. an energy-absorption anchor rod pallet, including be enclosed within anchor pole (15) upper, can along the double-deck butterfly pallet body (1) that anchor pole moves and the pre-load nut (14) being threaded in anchor pole exposed junction；It is characterized in that:
Described double-deck butterfly pallet body (1) is made up of upper strata butterfly pallet (2) and lower floor's butterfly pallet (3), the dish-shaped gathering sill (5) of Sandwich washer (4) formation hollow by welding together with upper strata butterfly pallet and lower floor's butterfly pallet outer rim between upper strata butterfly pallet and lower floor's butterfly pallet；
nullHave, between described pre-load nut (14) and double-deck butterfly pallet body, the energy absorbing tube (8) being enclosed within anchor pole，This energy absorbing tube is made up of the pretension section (8-1) of tearing tearing energy-absorbing section (8-2) and external diameter less than tearing energy-absorbing section，The total length tearing energy-absorbing section and tear pretension section is identical with the degree of depth of described gathering sill，The length wherein tearing pretension section is 10～15mm，The external diameter tearing energy-absorbing section is slightly less than the centre bore aperture of upper strata butterfly pallet，The pipe thickness tearing energy-absorbing section is slightly less than the thickness of described gathering sill，There is chamfering (10) lower end tearing pretension section，Tear the pretension pars infrasegmentalis centre bore through upper strata butterfly pallet，Press on the energy absorbing tube core-regulating platform (7) of lower floor's butterfly pallet centre bore periphery by its chamfering，Chamfering has the equally distributed one group of presplitting wire casing (11) in interval，Outer rim at energy absorbing tube core-regulating platform has one group of corresponding presplitting wire casing to help to split cutter (6).
2. energy-absorption anchor rod pallet according to claim 1, it is characterised in that: there is axially arranged energy-absorbing to tear rule (9) on the outer wall tearing energy-absorbing section of described energy absorbing tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610342003.2A CN105781599B (en) | 2016-05-20 | 2016-05-20 | A kind of energy-absorption anchor rod pallet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610342003.2A CN105781599B (en) | 2016-05-20 | 2016-05-20 | A kind of energy-absorption anchor rod pallet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105781599A true CN105781599A (en) | 2016-07-20 |
| CN105781599B CN105781599B (en) | 2017-10-03 |
Family
ID=56379273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610342003.2A Active CN105781599B (en) | 2016-05-20 | 2016-05-20 | A kind of energy-absorption anchor rod pallet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105781599B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194226A (en) * | 2016-07-22 | 2016-12-07 | 辽宁工程技术大学 | A kind of energy-absorbing pallet of self adaptation stress |
| CN108868856A (en) * | 2018-09-20 | 2018-11-23 | 河南理工大学 | Anti- HI high impact large deformation energy-absorbing anchoring tray component and its energy-absorbing anchoring process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5556234A (en) * | 1995-05-02 | 1996-09-17 | Jennmar Corporation | Mine roof bolt assembly |
| CN102748046A (en) * | 2012-06-25 | 2012-10-24 | 淮南矿业(集团)有限责任公司 | Double-layer anchor plate |
| CN102877871A (en) * | 2012-10-23 | 2013-01-16 | 山东科技大学 | Yield anchor cable spherical rotating and aligning device |
| CN203905980U (en) * | 2014-03-27 | 2014-10-29 | 山东科技大学 | Shock resistant anchor rod tray |
| CN204552782U (en) * | 2015-04-28 | 2015-08-12 | 西安科技大学 | A kind of anchor pole is by pressure device |
| CN205225303U (en) * | 2015-12-29 | 2016-05-11 | 山东科技大学 | Let in grades and press stock tray |
-
2016
- 2016-05-20 CN CN201610342003.2A patent/CN105781599B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5556234A (en) * | 1995-05-02 | 1996-09-17 | Jennmar Corporation | Mine roof bolt assembly |
| CN102748046A (en) * | 2012-06-25 | 2012-10-24 | 淮南矿业(集团)有限责任公司 | Double-layer anchor plate |
| CN102877871A (en) * | 2012-10-23 | 2013-01-16 | 山东科技大学 | Yield anchor cable spherical rotating and aligning device |
| CN203905980U (en) * | 2014-03-27 | 2014-10-29 | 山东科技大学 | Shock resistant anchor rod tray |
| CN204552782U (en) * | 2015-04-28 | 2015-08-12 | 西安科技大学 | A kind of anchor pole is by pressure device |
| CN205225303U (en) * | 2015-12-29 | 2016-05-11 | 山东科技大学 | Let in grades and press stock tray |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194226A (en) * | 2016-07-22 | 2016-12-07 | 辽宁工程技术大学 | A kind of energy-absorbing pallet of self adaptation stress |
| CN106194226B (en) * | 2016-07-22 | 2018-07-03 | 代连朋 | A kind of energy-absorbing pallet of adaptive stress |
| CN108868856A (en) * | 2018-09-20 | 2018-11-23 | 河南理工大学 | Anti- HI high impact large deformation energy-absorbing anchoring tray component and its energy-absorbing anchoring process |
| CN108868856B (en) * | 2018-09-20 | 2023-05-23 | 河南理工大学 | Energy-absorbing anchoring method of high-impact-resistant large-deformation energy-absorbing anchoring tray assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105781599B (en) | 2017-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108868856B (en) | Energy-absorbing anchoring method of high-impact-resistant large-deformation energy-absorbing anchoring tray assembly | |
| CN205329596U (en) | Buffer of traffic road surface facility end crashproof | |
| CN204552782U (en) | A kind of anchor pole is by pressure device | |
| CN111927515B (en) | Shear-resistant energy-absorbing scour-proof resistance-increasing anchor cable and thick-roof coal roadway branch-unloading coupling scour-proof method | |
| CN105781599A (en) | Energy absorption anchor rod tray | |
| CN205778962U (en) | A kind of constant-resistance pressure-relieving achor bar | |
| CN105329197A (en) | Energy absorption box of automobile front anti-collision beam | |
| CN204136914U (en) | Buffer device for collision | |
| CN103495956A (en) | Steel cable baffle ring press fitting tool and method for axial locating | |
| CN207647273U (en) | A kind of replaceable arc mild steel damper of disposed thread cylinder | |
| CN109057843B (en) | High-elongation impact-resistant anchor rod of anchoring section and anchoring method thereof | |
| CN106194226B (en) | A kind of energy-absorbing pallet of adaptive stress | |
| CN105346554B (en) | High polymer elastic element and metal friction element combined buffers | |
| CN103573893A (en) | Buffer for cable tackle | |
| CN107725088B (en) | Rock burst resistance and large-deformation wing type splitting energy-absorbing anchor rod and structure | |
| CN202272060U (en) | Full-floating connecting bracket | |
| CN201496337U (en) | Mine automotive oil-gas front hanging cylinder assembly | |
| CN204475231U (en) | Safety guard fence for super highway | |
| CN207715517U (en) | A kind of high intensity boss bolt | |
| CN106640161A (en) | High-strength energy-absorbing anchor rod with good extensive quantity | |
| CN203023170U (en) | Horizontal force compensator of hydraulic cylinder | |
| CN111472825B (en) | Automatic anchoring pre-tightening energy-absorbing anchor rod | |
| CN210440510U (en) | Novel hydraulic damper | |
| CN202247790U (en) | Cone-shaped rubber fender | |
| CN203585305U (en) | Split type piston anti-disengagement 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 |