CN110130954A - A kind of straight grain pipe eversion type energy absorption device - Google Patents
A kind of straight grain pipe eversion type energy absorption device Download PDFInfo
- Publication number
- CN110130954A CN110130954A CN201910533704.8A CN201910533704A CN110130954A CN 110130954 A CN110130954 A CN 110130954A CN 201910533704 A CN201910533704 A CN 201910533704A CN 110130954 A CN110130954 A CN 110130954A
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- Prior art keywords
- pipe
- straight grain
- pin
- column
- punch
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- 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.)
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 31
- 230000001681 protective effect Effects 0.000 claims abstract description 21
- 230000007306 turnover Effects 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 claims abstract description 9
- 230000035939 shock Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 7
- 230000003628 erosive effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 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
Abstract
The invention discloses a kind of straight grain pipe eversion type energy absorption devices, the column moved including protective casing and along the axis direction of the protective casing, and energy absorbing members are equipped between the bottom surface of the column and the bottom of protective casing；The energy absorbing members include the pressure head contacted with the bottom surface of the column, the straight grain pipe for turning over pipe punch-pin and can turn over pipe deformation between pipe punch-pin positioned at the pressure head and turning over for being installed on protective casing bottom；When column is by greater impact load, the straight grain pipe under the pressure effect of pressure head and turn over pipe punch-pin guidance under turn over pipe and deform to form double-layer tube wall, impact energy is converted to and turns over pipe plastic deformation ability, realization resigning energy-absorbing.The features such as straight grain pipe eversion type energy absorption device of the invention absorbs dissipation impact energy using the outside turnup plastic deformation of straight grain pipe, to improve the shock resistance of hydraulic vertical prop, constant with working resistance, travel efficiency is high, and deformation pattern is stablized, compact-sized.
Description
Technical field
The invention belongs to the technical fields of coal mine roadway erosion control supporting more particularly to a kind of straight grain pipe eversion type energy-absorbing to fill
It sets.
Background technique
Bump is a kind of with instantaneity, sudden and destructive mining power disaster.When bump occurs
The impact of the shock loading column of generation has rapidity, if impact is fast to press through, the safety valve being mounted on column comes not
And pressure release speed is much smaller than column pumping rate after opening or safety valve opening, this pressure that will lead to column increases sharply, and stands
Column easily bends, be broken or detonation etc. destroys, therefore the shock resistance of column is badly in need of improving.It is added and inhales in supporting construction
Can component absorb impact energy, when bump occurs, tunnel and its supporting construction can be protected to a certain extent.Energy-absorbing
Component is the key element that the erosion control bracket realizes erosion control energy-absorbing function, and performance is directly related to the entire hydraulic branch of erosion control energy-absorbing
The energy-absorbing effect of frame.
The energy absorbing members of mining industry field application mainly have pre- scrimp cartridge type energy absorbing members and enlarged diameter type energy absorbing members, pre- scrimp
Though cartridge type energy absorbing members, which have, stablizes repeatable bending deformation mode, its deformation drag is non-constant, cannot reach ideal
Energy-absorbing effect, enlarged diameter type energy absorbing members deformation process has constant resistance, however its stroke efficiency can only achieve half, inhale
The stroke that can step down is shorter.
Summary of the invention
Based on the above the deficiencies in the prior art, technical problem solved by the invention is to provide a kind of straight grain pipe eversion type
Energy absorption device, working resistance is constant, travel efficiency is high, deformation pattern is stable, compact-sized, is moulded using the outside turnup of straight grain pipe
Property deformation to absorb dissipation impact energy, to improve the shock resistance of hydraulic vertical prop.
In order to solve the above-mentioned technical problem, the present invention is achieved through the following technical solutions: the present invention provides a kind of straight grain
Pipe eversion type energy absorption device, the column moved including protective casing and along the axis direction of the protective casing, the column
Bottom surface and protective casing bottom between be equipped with energy absorbing members；
The energy absorbing members include the pressure head contacted with the bottom surface of the column, be installed on protective casing bottom to turn over pipe convex
Mould and the straight grain pipe that pipe deformation can be turned between pipe punch-pin positioned at the pressure head and turning over；
When column is by greater impact load, the straight grain pipe is under the pressure effect of pressure head and turns under the guidance of pipe punch-pin
It turns over pipe to deform to form double-layer tube wall, impact energy is converted to and turns over pipe plastic deformation ability, realize resigning energy-absorbing.
Further, the wall surface of the straight grain pipe is the straight tube of corrugated shape, and bottom end has turnup mouth.
Further, the pipe punch-pin that turns over is the punch-pin with certain fillet, which has first boss, described
The turnup mouth of straight grain pipe is bonded with the fillet for turning over pipe punch-pin.
Optionally, the pressure head is the disk with second boss, the outer diameter and institute of the first boss and second boss
The diameter for stating straight grain pipe inner ring is adapted, for positioning to the straight grain pipe.
Optionally, the top of the protective casing be equipped with for by by pressure head, straight grain pipe, turn over the energy-absorbing structure that pipe punch-pin forms
Part is encapsulated in the intracorporal guide sleeve of protecting crust；
The pilot hole that the outer diameter of same column matches is provided in the middle part of the guide sleeve, for making column always along protection
The axis direction of shell moves.
By upper, straight grain pipe eversion type energy absorption device of the invention is at least had the effect that
1, straight grain pipe eversion type energy absorbing members have constant working resistance, and turning over pipe deformation drag with displacement curve is approximately
Rectangle can reach ideal energy-absorbing effect.
2, auxiliary straight grain pipe turn over pipe deformation turn over pipe punch-pin and the height of pressure head is lower, straight grain pipe turn over pipe deformation stroke compared with
Greatly.
3, after straight grain pipe turns over pipe deformation, straight grain pipe becomes double-layer tube wall, and outer wall is wrapped in outside column, and structure is tight
It gathers, occupies little space.
4, straight grain pipe, which turns over pipe deformation, has stable repeatability, energy absorption device reliable operation.
5, straight grain pipe is thin-walled straight tube, and light weight is bigger than energy-absorbing (energy and energy absorption device ratio of absorption are big).
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, below in conjunction with preferred embodiment, and cooperates attached drawing, detailed description are as follows.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, the attached drawing to embodiment is simply situated between below
It continues.
Fig. 1 is the structural schematic diagram of straight grain pipe eversion type energy absorption device of the invention；
Fig. 2 is the structural schematic diagram of straight grain pipe of the invention；
Fig. 3 is the top view of Fig. 2；
Fig. 4 is the Section A-A figure in Fig. 2；
Fig. 5 is the structural schematic diagram for turning over pipe punch-pin of the invention；
Fig. 6 is the structural schematic diagram of pressure head of the invention；
Fig. 7 is the structural schematic diagram of guide sleeve of the invention；
Fig. 8 is the resigning deformation state schematic diagram of straight grain pipe eversion type energy absorption device of the invention；
Fig. 9 is that the resigning deformation of straight grain pipe eversion type energy absorption device of the invention terminates schematic diagram.
Specific embodiment
The embodiment of the invention will now be described in detail with reference to the accompanying drawings, and as part of this specification passes through
Embodiment illustrates the principle of the present invention, and other aspects of the present invention, feature and its advantage will become by the detailed description
It is very clear.In the attached drawing of institute's reference, the same or similar component is indicated using identical drawing reference numeral in different figures.
The structure of straight grain pipe eversion type energy absorption device of the invention is as shown in Fig. 1 to 7, mainly by column 1, guide sleeve 2, pressure
First 3, straight grain pipe 4, turn over pipe punch-pin 5 and protective casing 6 and form, structure is as shown in Figure 1.Wherein, the wall surface of straight grain pipe 4 is ripple
The straight tube of shape, the bottom end of straight grain pipe 4 are turnup mouth, and turning over pipe punch-pin 5 is the punch-pin with certain fillet, and punch-pin upper end is with the
One boss 51, straight grain pipe 4 are mounted on the upper end for turning over pipe punch-pin 5, and the turnup mouth of straight grain pipe 4 is bonded with the fillet for turning over pipe punch-pin 5, turns over
The outer diameter of the first boss 51 of pipe punch-pin 5 is adapted with the diameter of 4 inner ring of straight grain pipe, turns over the first boss 51 of pipe punch-pin 5 to straight
Line pipe 4 plays the role of positioning.
Pressure head 3 of the invention is certain thickness disk, and the lower end of pressure head 3 has second boss 31, and pressure head 3 is pressed in straight grain
The outer diameter of the upper end of pipe 4, the second boss 31 of pressure head 3 is adapted with the diameter of 4 inner ring of straight grain pipe, and the second of same pressure head 3 is convex
Platform 31 also functions to positioning action.By pressure head 3, straight grain pipe 4, turns over the energy absorbing members that pipe punch-pin 5 forms and is mounted in protective casing 6,
And it is integral by the encapsulation of guide sleeve 2 and forms erosion control energy absorption device.The top of protective casing 6, guide sleeve 2 is arranged in guide sleeve 2
Middle part is provided with the pilot hole 21 that same column 1 matches, and guarantees that column 1 is moved along the axis direction of protective casing 6 always, uses
The bottom surface of Shi Lizhu 1 passes through pilot hole 21 and is pressed on the upper surface of pressure head 3.
The structure of straight grain pipe 4 is as in Figure 2-4, and the wall surface of straight grain pipe 4 is the thin-walled straight tube of corrugated shape, and axially vertical
Cross sectional shape it is identical, be pressed into turnup mouth-shaped in advance with turning over pipe punch-pin 5 and contacting one end, the turnup mouth of straight grain pipe 4 and turn over pipe
The fillet of punch-pin 5 fits.
The structure of pipe punch-pin 5 is turned over as shown in figure 5, turning over pipe punch-pin is the punch-pin with certain fillet, has certain height on punch-pin
The diameter of the first boss 51 of degree, first boss 51 is equal with the diameter of 4 inner ring of straight grain pipe, and first boss 51 can play positioning
The effect of straight grain pipe 4.
The structure of pressure head 3 is as shown in fig. 6, pressure head 3 is certain thickness disk, and the contact jaw with straight grain pipe 4 is with certain
The diameter of the second boss 31 of height, second boss 31 is equal with straight grain pipe inner ring diameter, and the second boss 31 of pressure head also functions to
Position the effect of straight grain pipe 4.
The structure of guide sleeve 2 is right together with protective casing 6 as shown in fig. 7, guide sleeve 2 is mounted on the upper end of protective casing 6
Energy absorption device is packaged, and the crest clearance of pilot hole 21 and column 1 among guide sleeve 2 cooperates.
In the following, in conjunction with the description of Fig. 8-9 and above structure feature, to the work of straight grain pipe eversion type energy absorption device of the invention
It is briefly described as principle:
Under normal circumstances, column 1 is by static load.When roadway surrounding rock pressure slowly increases, static load suffered by column 1 increases therewith
Add, when fluid pressure reaches working resistance in column, the safety valve being installed on column 1 opens pressure release, this operating condition lower pillar stand 1
What the power for acting on energy absorption device was not up to straight grain pipe 4 turns over pipe deformation drag, and straight grain pipe 4 does not deform, and energy is main at this time
Pressure release is opened by the safety valve being installed on column 1 to dissipate.The state of energy absorption device is as schemed when straight grain pipe 4 does not turn over pipe deformation
Shown in 1.
When bump occurs, by greater impact load, the safety valve on column 1 has little time to open column 1, or opens
Pressure release speed is less than the pumping rate of column 1 afterwards, and the pressure of liquid in column 1 is caused to sharply increase, the power that energy absorption device is born
Also it increases with it.When energy absorption device institute stress reaches when turning over pipe deformation drag of straight grain pipe 4, straight grain pipe 4 is in the circle for turning over pipe punch-pin 5
Pipe deformation is turned under the guidance at angle, forms double-layer tube wall, the outer wall of double-layer tube wall is wrapped in 1 outside of column, as shown in figure 8,
Pipe plastic deformation is turned over by this, impact energy can be converted to and turn over pipe plastic deformation ability, to realize resigning energy-absorbing.
Straight grain pipe 4, which steps down to deform to open for safety valve, provide buffer time, if safety valve opens rear column 1 and is pressurized speed
Degree is still greater than safety valve pressure release speed, and energy absorption device, which steps down to deform, prevents the raising of fluid pressure in column 1, protects column 1
It is not destroyed.Until the second boss 31 of pressure head 3 is contacted with the first boss 51 for turning over pipe punch-pin 5, turns over pipe deformation and reach maximum row
Journey, energy absorption device resigning energy-absorbing terminate, as shown in Figure 9.The energy absorption device course of work of the invention has constant deformation drag,
I.e. in energy absorption device resigning deformation process, bracket still has support action to roadway surrounding rock body, therefore energy absorption device is stepped down and become
Shape belongs to rapid yield protection for bracket.
Straight grain pipe eversion type energy absorbing members of the invention absorb the impact that dissipates using the outside turnup plastic deformation of straight grain pipe
Can, to improve the shock resistance of hydraulic vertical prop, constant with working resistance, travel efficiency is high, and deformation pattern is stablized, knot
The features such as structure is compact.
The above is a preferred embodiment of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, it is noted that for those skilled in the art, without departing from the principle of the present invention, may be used also
To make several improvement and variation, these, which improve and change, is also considered as protection scope of the present invention.
Claims (5)
1. a kind of straight grain pipe eversion type energy absorption device, moves including protective casing and along the axis direction of the protective casing
Column, which is characterized in that energy absorbing members are equipped between the bottom surface of the column and the bottom of protective casing；
The energy absorbing members include the pressure head contacted with the bottom surface of the column, be installed on protective casing bottom turn over pipe punch-pin,
And positioned at the pressure head and turn over the straight grain pipe that can be turned over pipe between pipe punch-pin and deform；
When column is by greater impact load, the straight grain pipe pressure head pressure effect under and turn over pipe punch-pin guidance under occur
It turns over pipe to deform to form double-layer tube wall, impact energy is converted to and turns over pipe plastic deformation ability, realize resigning energy-absorbing.
2. straight grain pipe eversion type energy absorption device as described in claim 1, which is characterized in that the wall surface of the straight grain pipe is ripple
The straight tube of shape, bottom end have turnup mouth.
3. straight grain pipe eversion type energy absorption device as claimed in claim 2, which is characterized in that the pipe punch-pin that turns over is with certain
The punch-pin of fillet, the punch-pin upper end have first boss, and the turnup mouth of the straight grain pipe is bonded with the fillet for turning over pipe punch-pin.
4. straight grain pipe eversion type energy absorption device as claimed in claim 3, which is characterized in that the pressure head is with second boss
Disk, the outer diameter of the first boss and second boss is adapted with the diameter of the straight grain pipe inner ring, for described straight
Line pipe is positioned.
5. straight grain pipe eversion type energy absorption device as described in claim 1, which is characterized in that the top of the protective casing is equipped with
For by by pressure head, straight grain pipe, turn over the energy absorbing members that pipe punch-pin forms and be encapsulated in the intracorporal guide sleeve of protecting crust；
The pilot hole that the outer diameter of same column matches is provided in the middle part of the guide sleeve, for making column always along protective casing
Axis direction movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910533704.8A CN110130954A (en) | 2019-06-19 | 2019-06-19 | A kind of straight grain pipe eversion type energy absorption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910533704.8A CN110130954A (en) | 2019-06-19 | 2019-06-19 | A kind of straight grain pipe eversion type energy absorption device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110130954A true CN110130954A (en) | 2019-08-16 |
Family
ID=67578802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910533704.8A Pending CN110130954A (en) | 2019-06-19 | 2019-06-19 | A kind of straight grain pipe eversion type energy absorption device |
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| Country | Link |
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| CN (1) | CN110130954A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905571A (en) * | 2019-12-18 | 2020-03-24 | 辽宁工程技术大学 | Diameter-expanding type energy absorption device for straight-line pipe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003343626A (en) * | 2002-05-23 | 2003-12-03 | Om Kogyo Kk | Shock absorbing member |
| CN103321660A (en) * | 2013-06-25 | 2013-09-25 | 辽宁工程技术大学 | Mining constant-resistance yielding energy-absorbing impact-resisting supporting device |
| CN103541747A (en) * | 2013-10-10 | 2014-01-29 | 辽宁工程技术大学 | Flower-shape thin-wall energy-absorption erosion-prevention shoring device |
| CN107234837A (en) * | 2017-05-18 | 2017-10-10 | 西安交通大学 | A kind of ripple dot matrix metal sandwich cylindrical shell and preparation method thereof |
| CN107606019A (en) * | 2017-08-09 | 2018-01-19 | 西北工业大学 | A kind of double upset endergonic structures of double-deck end seal with high efficiency buffer energy absorption characteristics |
| CN210105889U (en) * | 2019-06-19 | 2020-02-21 | 辽宁工程技术大学 | Straight-line pipe external-turning type energy absorption device |
-
2019
- 2019-06-19 CN CN201910533704.8A patent/CN110130954A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003343626A (en) * | 2002-05-23 | 2003-12-03 | Om Kogyo Kk | Shock absorbing member |
| CN103321660A (en) * | 2013-06-25 | 2013-09-25 | 辽宁工程技术大学 | Mining constant-resistance yielding energy-absorbing impact-resisting supporting device |
| CN103541747A (en) * | 2013-10-10 | 2014-01-29 | 辽宁工程技术大学 | Flower-shape thin-wall energy-absorption erosion-prevention shoring device |
| CN107234837A (en) * | 2017-05-18 | 2017-10-10 | 西安交通大学 | A kind of ripple dot matrix metal sandwich cylindrical shell and preparation method thereof |
| CN107606019A (en) * | 2017-08-09 | 2018-01-19 | 西北工业大学 | A kind of double upset endergonic structures of double-deck end seal with high efficiency buffer energy absorption characteristics |
| CN210105889U (en) * | 2019-06-19 | 2020-02-21 | 辽宁工程技术大学 | Straight-line pipe external-turning type energy absorption device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905571A (en) * | 2019-12-18 | 2020-03-24 | 辽宁工程技术大学 | Diameter-expanding type energy absorption device for straight-line pipe |
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