CN110206567A - A kind of energy-absorbing erosion control shock resistance telescopic column and its shock resistance method - Google Patents
A kind of energy-absorbing erosion control shock resistance telescopic column and its shock resistance method Download PDFInfo
- Publication number
- CN110206567A CN110206567A CN201910431997.9A CN201910431997A CN110206567A CN 110206567 A CN110206567 A CN 110206567A CN 201910431997 A CN201910431997 A CN 201910431997A CN 110206567 A CN110206567 A CN 110206567A
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- Prior art keywords
- energy
- column
- erosion control
- pressure
- guide cylinder
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- 230000003628 erosive effect Effects 0.000 title claims abstract description 50
- 230000035939 shock Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000945 filler Substances 0.000 claims abstract description 37
- 230000008859 change Effects 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims abstract description 8
- 238000009527 percussion Methods 0.000 claims abstract description 7
- 230000009466 transformation Effects 0.000 claims abstract description 7
- 230000006378 damage Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 13
- 230000007423 decrease Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 239000011358 absorbing material Substances 0.000 claims 1
- 239000002131 composite material Substances 0.000 claims 1
- 230000007062 hydrolysis Effects 0.000 claims 1
- 238000006460 hydrolysis reaction Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 4
- 230000004044 response Effects 0.000 abstract description 3
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000002910 structure generation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D15/512—Arrangement of valves
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Vibration Dampers (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The present invention relates to a kind of energy-absorbing erosion control shock resistance telescopic columns, including column large cylinder, safety valve, bottom valve, middle cylinder, movable post, the column bottom of movable post is equipped with screw, guide cylinder end cap, pressure guide cylinder, energy-absorbing erosion control filler, when column in Bracing Process by percussion when, the lower cavity pressure of movable post increases rapidly therewith, pressure change is transmitted on energy-absorbing erosion control filler by the through-hole on guide cylinder end cap and pressure guide cylinder, when safety valve has little time to open, energy-absorbing erosion control filler is influenced instantaneously to be hardened by pressure change, carry out dissipating to protect pillar construction not to be hit destruction by the phase transformation effect of anti-energy-absorbing erosion control filler impact energy that column is subject to.The present invention solves the problems, such as current column only with the response time existing for safety valve not in time.
Description
Technical field
The present invention relates to column checking motion and its shock resistance methods, for the anti-of coal mine work area hydraulic support column
Shield.
Background technique
Hydraulic support is used for coal mine fully-mechanized mining working supporting, and column is the main load bearing component of hydraulic support, and hydraulic support exists
Bracing Process is often subject to the effect of working face roof and floor shock loading, and column is also often subject to shock loading influence, main at present
It to carry out that structure is protected not to be damaged using the unlatching drain of column safety valve.When the protection main problem of safety valve is in response to
Between not in time, since safety valve is to open drainage hole using the compression of spring, certain response time is compressed with due to spring,
When hydraulic support is by biggish percussion, column cavity of resorption pressure rise transformation period is less than the reaction time of spring, peace
Full valve has little time to open, and impact energy cannot discharge, to the swollen cylinder phenomenon of column occur.
Invention ZL201310383791.6 discloses a kind of shock resistance telescopic column, and the I and II cylinder body of column is all made of
The level-one runner and second level runner feed liquor being provided in casing wall, do not utilize into, return liquid connector realize column ascending, descending, hollow activity
Column epicoele is arranged safety valve, effective protection second level cylinder body cavity of resorption, there are problem, using safety valve release, shock loading compared with
There are release phenomenons not in time when big.Invention ZL201510306056.4 discloses a kind of shock resistance hydraulic cylinder, in column cylinder
Bottom surface on using cavity rubber and its internal wire rope spring form Rubber steel wire rope elastic sealing gas chamber, pass through elastic gas
The flexible deformation of room absorbs impact energy, and there are problem, the volume that elastic air chamber occupies is larger, influences the flexible row of column
Journey.
To overcome the shortcomings of above-mentioned technology, a kind of instantaneous energy-absorbing scour protection device of column is needed.
Summary of the invention
It is an object of the invention to overcome above-mentioned technical deficiency, by the way that energy-absorbing erosion control filler is arranged on the column bottom of movable post,
By the barometric gradient sensibility feature of energy-absorbing erosion control filler, when column is impacted, have little time the wink opened in safety valve
Between, protect pillar construction not to be hit destroying infection by the phase transformation of energy-absorbing erosion control filler effect.
Technical solution: screw (5-2), guide cylinder end cap (5- is arranged in the present invention on the column bottom (5-1) of movable post (5)
3), pressure guide cylinder (5-4), energy-absorbing erosion control filler (5-5), column bottom valve (3) in Bracing Process are in the lock state, living
Column cavity of resorption closing, when column in Bracing Process by percussion when, the lower cavity pressure of movable post increases rapidly therewith, pressure become
Change is transmitted on energy-absorbing erosion control filler (5-5) by the through-hole on guide cylinder end cap (5-3) and pressure guide cylinder (5-4),
Safety valve (2) have little time open when, energy-absorbing erosion control filler (5-5) is influenced instantaneously to be hardened by pressure change, by column by
Impact energy dissipated by the phase transformation of anti-energy-absorbing erosion control filler (5-5) effect, when cavity pressure is further continued for increasing under column
When opening setting pressure to safety valve, safety valve (2) is opened, and cavity pressure decreases under column movable post, energy-absorbing erosion control filler
(5-5) is restored to initial state, not only can protect pillar construction and is not hit destruction, can also effectively avoid safety valve
Structure generation of breakoff phenomenon due to shock loading is excessive.
Present invention tool has the advantage that.
(1) energy-absorbing erosion control material is located in the cavity at movable post column bottom, does not take up extra space, and the stroke of column does not have
It influences.
(2) energy-absorbing erosion control material only it is more sensitive to pressure change, when pressure change there are when gradient its can just work,
The impact energy on peak can be become to ebb impact energy, effective protection column body construction is not damaged.
(3) energy-absorbing erosion control material can be recycled, and when pressure tends to be constant, when the barometric gradient of column inner cavity is close to zero, inhale
Energy erosion control material can be gradually restored to original gel state.
(4) energy-absorbing erosion control material is faster than safety valve to the reaction speed of pressure change, when safety valve is not yet turned on,
Energy-absorbing erosion control material will act immediately, and the impact energy of peak value is allowed to become the shock loading of low peak, reduce impact energy
Destruction to safety valve.
Detailed description of the invention
Fig. 1 is column primary structure schematic diagram.In figure, 1- column large cylinder, 2- safety valve, 3- bottom valve, 4- middle cylinder, 5- work
Column.
Fig. 2 is column energy-absorbing anti-washing structure schematic diagram.In figure, 5-1: column bottom, 5-2: screw, 5-3: guide cylinder end cap, 5-
4: pressure guide cylinder, 5-5: energy-absorbing erosion control filler.
Fig. 3 is movable post column bottom structure.In figure, 5-1-1: screw boss, 5-1-2: liquid-passing hole, 5-1-3: threaded hole
Specific embodiment.
The embodiment of the present invention is further described with reference to the accompanying drawing:
As shown in Figure 1, a kind of energy-absorbing erosion control shock resistance telescopic column, including column large cylinder (1), safety valve (2), bottom valve (3), in
The column bottom (5-1) of cylinder (4), movable post (5), movable post (5) is equipped with screw (5-2), guide cylinder end cap (5-3), pressure guide cylinder
(5-4), energy-absorbing erosion control filler (5-5), pressure guide cylinder (5-4) and screw boss (5-1-1) pass through screw thread and movable post
Column bottom (5-1) is connected, and pressure guide cylinder (5-4) carries out end limit, guide cylinder end cap (5- by guide cylinder end cap (5-3)
3) it is fixed on the column bottom (5-1) of movable post by screw (5-2), setting between pressure guide cylinder (5-4) and column bottom (5-1)
Energy-absorbing erosion control filler (5-5) is set, certain amount through-hole is equipped on guide cylinder end cap (5-3) and pressure guide cylinder (5-4),
Pressure change inside column is passed into energy-absorbing erosion control filler (5-5).
As shown in Fig. 2, the column bottom (5-1) of movable post (5) is led equipped with screw (5-2), guide cylinder end cap (5-3), pressure
To cylinder (5-4), energy-absorbing erosion control filler (5-5), column bottom valve (3) in Bracing Process is in the lock state, movable post cavity of resorption envelope
Close, when column in Bracing Process by percussion when, the lower cavity pressure of movable post increases rapidly therewith, and pressure change is by leading
Through-hole on cylinder end cap (5-3) and pressure guide cylinder (5-4) is transmitted on energy-absorbing erosion control filler (5-5), in safety valve
(2) when having little time to open, energy-absorbing erosion control filler (5-5) is influenced instantaneously to be hardened by pressure change, the impact that column is subject to
Energy is dissipated by the phase transformation effect of anti-energy-absorbing erosion control filler (5-5), when cavity pressure is further continued for increasing to safety under column
When valve opens setting pressure, safety valve (2) is opened, and cavity pressure decreases under column movable post, and energy-absorbing erosion control filler (5-5) is extensive
Initial state is arrived again.
As shown in figure 3, the column bottom (5-1) of movable post is equipped with screw boss (5-1-1), liquid-passing hole (5-1-2), spiral shell
Pit (5-1-3), pressure guide cylinder (5-4) pass through column bottom (5-1) phase of screw thread and movable post with screw boss (5-1-1)
Even, guide cylinder end cap (5-3) is fixed on the column of movable post by the threaded hole (5-1-3) of column bottom (5-1) by screw (5-2)
On bottom (5-1).
Above-described embodiment is that effective embodiment of the invention is described, and is not limited the range of present aspect
Fixed, under the premise of not departing from design spirit of the invention, ordinary engineering and technical personnel is to the various modifications of the invention made and changes
Into should fall within the scope of protection determined by the claims of the present invention.
Claims (3)
1. a kind of energy-absorbing erosion control shock resistance telescopic column and its shock resistance method, including column large cylinder (1), safety valve (2), bottom valve
(3), middle cylinder (4), movable post (5), it is characterized in that the column bottom (5-1) of movable post (5) is equipped with screw (5-2), guide cylinder end cap
(5-3), pressure guide cylinder (5-4), energy-absorbing erosion control filler (5-5), column bottom valve (3) in Bracing Process are in locking shape
State, movable post cavity of resorption closing, when column in Bracing Process by percussion when, the lower cavity pressure of movable post increases rapidly therewith,
Pressure change is transmitted to energy-absorbing erosion control filler (5- by the through-hole on guide cylinder end cap (5-3) and pressure guide cylinder (5-4)
5) on, when safety valve (2) has little time to open, energy-absorbing erosion control filler (5-5) is influenced instantaneously to be hardened by pressure change, will
The impact energy that column is subject to is dissipated by the phase transformation of anti-energy-absorbing erosion control filler (5-5) effect, when cavity pressure is again under column
When continuing to increase to safety valve unlatching setting pressure, safety valve (2) is opened, and cavity pressure decreases under column movable post, and energy-absorbing is anti-
Filling material (5-5) is restored to initial state.
2. a kind of energy-absorbing erosion control shock resistance telescopic column according to claim 1 and its shock resistance method, the column bottom of movable post
(5-1) is equipped with screw boss (5-1-1), liquid-passing hole (5-1-2), threaded hole (5-1-3), it is characterised in that pressure is led
It is connected by screw thread with the column bottom (5-1) of movable post to cylinder (5-4) with screw boss (5-1-1), pressure guide cylinder (5-4) is logical
It crosses guide cylinder end cap (5-3) and carries out end limit, guide cylinder end cap (5-3) is fixed on the column bottom of movable post by screw (5-2)
On (5-1), setting energy-absorbing erosion control filler (5-5) between pressure guide cylinder (5-4) and column bottom (5-1), at guide cylinder end
It covers (5-3) and pressure guide cylinder (5-4) is equipped with certain amount through-hole, energy-absorbing erosion control filler (5-5) passes through guide cylinder end cap
Through-hole on (5-3) and pressure guide cylinder (5-4) experiences movable post cavity of resorption pressure change, when column in Bracing Process by
When percussion, cavity pressure increases rapidly therewith under movable post, and the variation of pressure is oriented to by guide cylinder end cap (5-3) and pressure
Through-hole on cylinder (5-4) is transmitted on energy-absorbing erosion control filler (5-5), when safety valve (2) has little time to open, the anti-filling of energy-absorbing
Material (5-5) is instantaneously hardened under the stress of variation, and the impact energy that column is subject to passes through anti-energy-absorbing erosion control filler (5-
5) phase transformation effect dissipates.
3. a kind of energy-absorbing erosion control shock resistance telescopic column according to claim 1 and its shock resistance method, pressure guide cylinder
Setting energy-absorbing erosion control filler (5-5) between (5-4) and column bottom (5-1), it is characterised in that energy-absorbing erosion control filler (5-5) is
By a kind of gel composite material for not facile hydrolysis that barometric gradient sensitive material and auxetic materials form, energy-absorbing erosion control filler
In barometric gradient sensitive material to barometric gradient change it is more sensitive, the reaction time be less than safety valve (2) opening time,
Auxetic materials compression in energy-absorbing erosion control filler (5-5) can be hardened, when pressure change gradient is larger, energy-absorbing erosion control filler
Auxetic materials in (5-5) under the action of barometric gradient sensitive material can instantaneous energy-absorbing be hardened, when barometric gradient is eliminated
Afterwards, energy-absorbing erosion control filler (5-5) is and is restored to initial gel, when column is by percussion, cavity pressure under column
It can increase rapidly, the instantaneous energy-absorbing of energy-absorbing erosion control filler (5-5) meeting is hardened, and the impact energy that dissipation column is subject to slows down impact
Power protects column not to be hit destruction, and after shock loading disappears, energy-absorbing erosion control filler (5-5) is restored to initial gel
State.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910431997.9A CN110206567B (en) | 2019-05-23 | 2019-05-23 | Energy-absorbing impact-resistant telescopic upright column and impact-resistant method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910431997.9A CN110206567B (en) | 2019-05-23 | 2019-05-23 | Energy-absorbing impact-resistant telescopic upright column and impact-resistant method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110206567A true CN110206567A (en) | 2019-09-06 |
| CN110206567B CN110206567B (en) | 2021-06-22 |
Family
ID=67788243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910431997.9A Active CN110206567B (en) | 2019-05-23 | 2019-05-23 | Energy-absorbing impact-resistant telescopic upright column and impact-resistant method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110206567B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530579A (en) * | 2021-08-25 | 2021-10-22 | 中煤北京煤矿机械有限责任公司 | Hydraulic support stand is with buffering energy-absorbing mechanism convenient to replacement |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3838625A (en) * | 1971-01-15 | 1974-10-01 | Kloeckner Werke Ag | Hydraulic double telescoping mine prop |
| CN86210316U (en) * | 1986-12-15 | 1987-12-12 | 煤炭工业部煤炭科学研究院太原分院 | Anti-impacting upright column |
| CN103772960A (en) * | 2014-01-23 | 2014-05-07 | 德清苏尔新材料有限公司 | Polyurethane-based impact-resistant composite material and preparation method thereof |
| CN105041350A (en) * | 2015-06-02 | 2015-11-11 | 辽宁工程技术大学 | Hydraulic prop having anchoring force energy-absorbing buffering function |
| CN105385164A (en) * | 2015-12-30 | 2016-03-09 | 中物功能材料研究院有限公司 | Smart impact-resisting material and preparation method thereof |
| CN205890778U (en) * | 2016-06-27 | 2017-01-18 | 天津海程橡塑制品有限公司 | Car is with buffering foaming baffle |
| CN108612549A (en) * | 2018-07-13 | 2018-10-02 | 山东科技大学 | A kind of buffer system pressed for hydraulic support shock resistance and its application |
| CN108625887A (en) * | 2018-06-15 | 2018-10-09 | 韦立会 | A kind of mine hydraulic prop |
-
2019
- 2019-05-23 CN CN201910431997.9A patent/CN110206567B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3838625A (en) * | 1971-01-15 | 1974-10-01 | Kloeckner Werke Ag | Hydraulic double telescoping mine prop |
| CN86210316U (en) * | 1986-12-15 | 1987-12-12 | 煤炭工业部煤炭科学研究院太原分院 | Anti-impacting upright column |
| CN103772960A (en) * | 2014-01-23 | 2014-05-07 | 德清苏尔新材料有限公司 | Polyurethane-based impact-resistant composite material and preparation method thereof |
| CN105041350A (en) * | 2015-06-02 | 2015-11-11 | 辽宁工程技术大学 | Hydraulic prop having anchoring force energy-absorbing buffering function |
| CN105385164A (en) * | 2015-12-30 | 2016-03-09 | 中物功能材料研究院有限公司 | Smart impact-resisting material and preparation method thereof |
| CN205890778U (en) * | 2016-06-27 | 2017-01-18 | 天津海程橡塑制品有限公司 | Car is with buffering foaming baffle |
| CN108625887A (en) * | 2018-06-15 | 2018-10-09 | 韦立会 | A kind of mine hydraulic prop |
| CN108612549A (en) * | 2018-07-13 | 2018-10-02 | 山东科技大学 | A kind of buffer system pressed for hydraulic support shock resistance and its application |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530579A (en) * | 2021-08-25 | 2021-10-22 | 中煤北京煤矿机械有限责任公司 | Hydraulic support stand is with buffering energy-absorbing mechanism convenient to replacement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110206567B (en) | 2021-06-22 |
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