CN110130953A - A kind of compound erosion control energy absorption device - Google Patents
A kind of compound erosion control energy absorption device Download PDFInfo
- Publication number
- CN110130953A CN110130953A CN201910436647.1A CN201910436647A CN110130953A CN 110130953 A CN110130953 A CN 110130953A CN 201910436647 A CN201910436647 A CN 201910436647A CN 110130953 A CN110130953 A CN 110130953A
- Authority
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- China
- Prior art keywords
- expanding
- energy
- absorption device
- pressure head
- energy absorption
- 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.)
- Pending
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 67
- 150000001875 compounds Chemical class 0.000 title claims abstract description 31
- 230000003628 erosive effect Effects 0.000 title claims abstract description 29
- 239000006096 absorbing agent Substances 0.000 claims abstract description 63
- 230000001681 protective effect Effects 0.000 claims abstract description 19
- 230000009471 action Effects 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 claims description 4
- 230000035939 shock Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000005086 pumping Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 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
- 230000003116 impacting effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005065 mining 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
- E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
- E21D15/18—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with one part resting on a supporting medium, e.g. rubber, sand, bitumen, lead, located in the other part, with or without expulsion or displacement of the medium upon excessive pressure
-
- 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
-
- 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
- E21D15/54—Details of the ends of props
- E21D15/55—Details of the ends of props of prop heads or feet
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)
Abstract
The invention discloses a kind of compound erosion control energy absorption devices, and the column moved including protective casing and along the axis direction of the protective casing is successively arranged first order energy absorption device and second level energy absorption device between the bottom end of the column and the bottom of protective casing；The first order energy absorption device includes expanding pressure head and the pre- scrimp energy absorber that is installed in the expanding pressure head, the bottom surface of the column is pressed on the upper surface of the pre- scrimp energy absorber, plastic deformation takes place for the pre- scrimp energy absorber described under the action of column, carries out energy-absorbing resigning；The second level energy absorption device includes the expanding energy absorber with the cooperation of the lower end of the expanding pressure head, is moved downward for pressure head expanding under impact loading, the expanding energy absorber expanding energy-absorbing step by step.Compound erosion control energy absorption device of the invention, operation mileage rate is high, and absorption energy is more, compact-sized, constant resisting force, and deformation pattern is stablized.
Description
Technical field
The invention belongs to the technical field of coal mine roadway erosion control supporting more particularly to a kind of compound erosion control energy absorption devices.
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 release speed is less than column pumping rate after opening or safety valve opening, this can make the pressure of column increase sharply, and cause to stand
Column bends, be broken or detonation etc. destroys, therefore need to improve the shock resistance of column.Energy-absorbing structure is added in supporting construction
Part absorbs impact energy, when bump occurs, can protect tunnel and its supporting construction to a certain extent.Energy absorbing members
It is the key element that the erosion control bracket realizes erosion control energy-absorbing function, performance is directly related to entire erosion control energy-absorbing hydraulic support
Energy-absorbing effect.Although conventional enlarged diameter type endergonic structure has constant working resistance, its expanding stroke can only use one
Half, operation mileage rate is low, causes using being restricted.
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 compound anti-suction
Energy device, operation mileage rate is high, and absorption energy is more, compact-sized, constant resisting force, and deformation pattern is stablized.
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 compound
Type erosion control energy absorption device, the column moved including protective casing and along the axis direction of the protective casing, the column
First order energy absorption device and second level energy absorption device are successively arranged between bottom end and the bottom of protective casing；
The first order energy absorption device includes expanding pressure head and the pre- scrimp energy absorber that is installed in the expanding pressure head, institute
The bottom surface for stating column is pressed on the upper surface of the pre- scrimp energy absorber, for pre- scrimp energy absorber under the action of column
Plastic deformation takes place, carries out energy-absorbing resigning；
The second level energy absorption device includes the expanding energy absorber with the cooperation of the lower end of the expanding pressure head, for impacting
Expanding pressure head moves downward under load effect, the expanding energy absorber expanding energy-absorbing step by step.
Further, the expanding pressure head is the cylinder-shaped thin wall cabinet with several grades of cone angles, and lower end has certain
The outer conical surface of angle, the upper end inner surface of the expanding energy absorber are provided with the inner conical surface matched with the expanding pressure head.
Further, the cabinet internal diameter of the expanding pressure head be greater than the deformed full-size of the pre- scrimp energy absorber,
And it is greater than the outer diameter of the column.
Optionally, the wall surface of the pre- scrimp energy absorber processes effigurate pre- scrimp.
Further, the upper end of the expanding energy absorber is provided with the taper groove that angle is α, the taper groove and the expansion
The lower end cone match of diameter pressure head；
The internal diameter of the expanding energy absorber is greater than the level-one conical surface path of the expanding pressure head, less than the level-one of expanding pressure head
Conical surface major diameter.
Optionally, the upper end of the protective casing is equipped with guide sleeve, for filling together with the protective casing to energy-absorbing
It sets and is packaged；The pilot hole with the outer surface clearance fit of the column is provided in the middle part of the guide sleeve.
By upper, compound erosion control energy absorption device of the invention is at least had the effect that
1, pre- scrimp energy absorber and expanding energy absorber tandem compound structure, the operation mileage rate than common energy absorber are high.
2, expanding pressure head has multistage cone angle, and repeatedly expanding to expanding energy absorber, the energy of absorption is compared with the expanding energy-absorbing of single-stage
Device is more.
3, it is hollow structure inside expanding pressure head, makes the light weight of entire energy absorption device, than energy-absorbing (energy of absorption and suction
The ratio of energy device quality) increase.
4, in endergonic process, energy absorption device has constant-resistance force characteristic, and resistance coefficient of variation is small.
5, pre- scrimp energy absorber is inside expanding pressure head, and compact-sized, the space occupied is small.
6, endergonic process device deformation pattern is stablized, reliable operation.
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 compound erosion control energy absorption device of the invention；
Fig. 2 is the enlarged drawing in Fig. 1 at A；
Fig. 3 is the structural schematic diagram of the expanding pressure head of compound erosion control energy absorption device of the invention；
Fig. 4 is the structural schematic diagram of the pre- scrimp energy absorber of compound erosion control energy absorption device of the invention；
Fig. 5 is the top view of Fig. 4；
Fig. 6 is the structural schematic diagram of the expanding energy absorber of compound erosion control energy absorption device of the invention；
Fig. 7 is the structural schematic diagram of the guide sleeve of compound erosion control energy absorption device of the invention；
Fig. 8 is the top view of Fig. 7；
Fig. 9 is energy absorption device status diagram when compound erosion control energy absorption device of the invention is once expanding；
Figure 10 is the enlarged drawing in Fig. 9 at B；
Figure 11 is energy absorption device status diagram when compound erosion control energy absorption device of the invention is secondary expanding；
Figure 12 is the enlarged drawing in Figure 11 at C；
Energy absorption device status diagram when Figure 13 is compound erosion control energy absorption device of the invention expanding completion；
Figure 14 is the enlarged drawing in Figure 13 at D；
Figure 15 is energy absorption device signal when the pre- scrimp energy absorber conquassation of compound erosion control energy absorption device of the invention is completed
Figure；
Figure 16 is the enlarged drawing in Figure 15 at E.
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 compound erosion control energy absorption device of the invention is as shown in Fig. 1 to 16, mainly by column 1, guide sleeve 2, pre-
Scrimp energy absorber 3, expanding pressure head 4, expanding energy absorber 5 and protective casing 6 form, wherein expanding pressure head 4 is that a kind of cylinder is thin
Wall class cabinet, the lower end of cabinet have the outer conical surface of certain angle, and expanding 5 upper end inner surface of energy absorber is provided with expanding pressure head
4 inner conical surfaces matched.Pre- scrimp energy absorber 3 forms first order energy absorption device in the cabinet of expanding pressure head 4.Expanding pressure
First 4 are coaxially installed in series with expanding energy absorber 5, wherein the lower end male cone (strobilus masculinus) of expanding pressure head 4 and expanding 5 upper end inner conical surface of energy absorber
Cooperation, forms second level energy absorption device, and two-stage energy absorption device absorbs energy jointly.By pre- scrimp energy absorber 3, expanding pressure head 4 with
The series connection energy absorption device that expanding energy absorber 5 forms is mounted on inside protective casing 6, and is encapsulated as an entirety by guide sleeve 2.It leads
It is provided with the pilot hole that same column 1 matches to 2 middle part of set, guarantees that column 1 is moved along the axis direction of protective casing 6 always,
The pilot hole that 1 bottom surface of column passes through guide sleeve 2 when use is pressed on the upper surface of pre- scrimp energy absorber 3.
The structure of expanding pressure head 4 is as shown in figure 3, expanding pressure head 4 is the cylindrical case (this example for having several grades of cone angles
By taking second level cone angle as an example), cone angle lower end path D3 cooperates with expanding 5 inner conical surface of energy absorber.In order to guarantee that pre- scrimp energy absorber 3 exists
Do not interfered in conquassation deformation process, expanding 4 cabinet internal diameter D2 of pressure head should be greater than the deformed maximum ruler of pre- scrimp energy absorber 3
Very little, to guarantee normal assembly, the internal diameter D2 of pressure head 4 should be greater than the outer diameter of column 1, and actual size takes the greater in the two.
The structure of pre- scrimp energy absorber 3 is as shown in Figure 4 and Figure 5, and pre- scrimp energy absorber 3 absorbs impact energy by conquassation deformation
Amount, in order to keep pre- 3 crush loads of scrimp energy absorber uniform, conquassation deformation pattern is stablized, and the wall surface of pre- scrimp energy absorber 3 is machined with
The pre- scrimp of certain shapes.
The structure of expanding energy absorber 5, should as shown in fig. 6, the upper end of expanding energy absorber 5 is provided with the taper groove that angle is α
For taper groove with expanding 4 lower end cone match of pressure head, the level-one conical surface that expanding 5 internal diameter d1 of energy absorber should be greater than expanding pressure head 4 is small
Diameter D3, less than the level-one conical surface major diameter D4 of expanding pressure head 4.
The structure of guide sleeve 2 is as shown in Figure 7 and Figure 8, and guide sleeve 2 is mounted on the upper end of protective casing 6, with protective casing 6
Energy absorption device is packaged together, 2 intermediate throughholes of guide sleeve and 1 crest clearance of column cooperate.
As shown in figures 9 to 16, the course of work of compound erosion control energy absorption device of the invention is as follows:
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 release, this operating condition lower pillar stand 1
The power for acting on compound energy absorption device is not up to original deformation bearing capacity, and compound energy absorption device does not deform energy-absorbing, this
Shi Nengliang is mainly opened by the safety valve being installed on column 1.The compound energy absorption device state that deformation occurs such as Fig. 1 institute
Show.
When bump occurs, for column 1 by greater impact load, the safety valve release speed on column 1 is less than column 1
Pumping rate, cause the pressure of liquid in column 1 to sharply increase, cause energy absorption device bear power also increase with it.Work as suction
When energy device institute stress reaches the expanding deformation of energy absorber 5 startup power, energy absorption device, which steps down to deform, absorbs energy.Energy absorption device is stepped down
The time of deformation provides buffer time for safety valve unlatching, if safety valve opens rear column pumping rate and is still greater than safety valve release
Speed, energy absorption device, which steps down to deform, prevents the raising of fluid pressure in column 1, and column 1 is protected not to be destroyed.Energy absorption device work
Make process with 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, which steps down to deform to belong to bracket, allows pressure to protect.Pre- scrimp energy absorber 3 deformation in compound energy absorption device
Load of peak load when occurring expanding than expanding energy absorber 5 it is big, so expanding pressure head 4 is opened first under impact loading
Beginning moves downward, and starts expanding energy-absorbing, the course of work first with the expanding energy absorber that expanding energy absorber 5 forms by expanding pressure head 4
As shown in Figure 9 and Figure 10.
If foreign impacts load pressure continues growing, expanding pressure head 4 is continued traveling downwardly, expanding energy absorber 5 expanding energy-absorbing step by step,
Unit state is as is illustrated by figs. 11 and 12 when expanding step by step.With the downlink of pressure head, expanding energy absorber 5 works as expansion by gradually expanding
When 4 lower end surface of diameter pressure head moves to 6 bottom of protective casing, the expanding energy-absorbing of expanding energy absorber 5 terminates.Expanding resigning energy-absorbing is primary
Pressure is allowed to protect, energy absorption device state is as shown in Figure 13 and Figure 14 at this time.
After once allowing pressure to be protected, if 1 pressure of column continues to increase, secondary energy-absorbing will be started, pressure is allowed to protect, is i.e. pressure
When reaching the rock deformation pressure of pre- scrimp energy absorber 3, the pre- scrimp energy absorber 3 inside expanding pressure head 4 starts under the action of column 1
It is plastically deformed, carries out energy-absorbing resigning.When pre- scrimp energy absorber 3 is crushed completely, energy-absorbing terminates, at this time energy absorption device state
As shown in Figure 15 and Figure 16.
Compound erosion control energy absorption device of the invention passes through the energy for allowing pressure protection to absorb it twice and improves, resigning stroke
Increase, operation mileage rate is high, and absorption energy is more, compact-sized.
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 (6)
1. a kind of compound erosion control energy absorption device moves vertical including protective casing and along the axis direction of the protective casing
Column, which is characterized in that first order energy absorption device and second are successively arranged between the bottom end of the column and the bottom of protective casing
Grade energy absorption device；
The first order energy absorption device includes expanding pressure head and the pre- scrimp energy absorber that is installed in the expanding pressure head, described vertical
The bottom surface of column is pressed on the upper surface of the pre- scrimp energy absorber, is started for the pre- scrimp energy absorber described under the action of column
It is plastically deformed, carries out energy-absorbing resigning；
The second level energy absorption device includes the expanding energy absorber with the cooperation of the lower end of the expanding pressure head, in shock loading
Expanding pressure head moves downward under effect, the expanding energy absorber expanding energy-absorbing step by step.
2. compound erosion control energy absorption device as described in claim 1, which is characterized in that the expanding pressure head is with several grades
The cylinder-shaped thin wall cabinet of cone angle, lower end have the outer conical surface of certain angle, the upper end inner surface of the expanding energy absorber
It is provided with the inner conical surface matched with the expanding pressure head.
3. compound erosion control energy absorption device as claimed in claim 2, which is characterized in that the cabinet internal diameter of the expanding pressure head is big
In the deformed full-size of the pre- scrimp energy absorber and it is greater than the outer diameter of the column.
4. compound erosion control energy absorption device as described in claim 1, which is characterized in that the wall surface of the pre- scrimp energy absorber adds
The effigurate pre- scrimp of work.
5. compound erosion control energy absorption device as described in claim 1, which is characterized in that the upper end of the expanding energy absorber is provided with
Angle is the taper groove of α, the lower end cone match of the taper groove and the expanding pressure head；
The internal diameter of the expanding energy absorber is greater than level-one conical surface path, the level-one conical surface less than expanding pressure head of the expanding pressure head
Major diameter.
6. compound erosion control energy absorption device as described in claim 1, which is characterized in that the upper end of the protective casing is equipped with
Guide sleeve, for being packaged together with the protective casing to energy absorption device；
The pilot hole with the outer surface clearance fit of the column is provided in the middle part of the guide sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910436647.1A CN110130953A (en) | 2019-05-23 | 2019-05-23 | A kind of compound erosion control energy absorption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910436647.1A CN110130953A (en) | 2019-05-23 | 2019-05-23 | A kind of compound erosion control energy absorption device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110130953A true CN110130953A (en) | 2019-08-16 |
Family
ID=67572839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910436647.1A Pending CN110130953A (en) | 2019-05-23 | 2019-05-23 | A kind of compound erosion control energy absorption device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110130953A (en) |
Cited By (4)
| 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 |
| CN112648332A (en) * | 2020-12-03 | 2021-04-13 | 北京科技大学 | Spherical cell hole ladder-shaped deformation ore pressure controller and method |
| CN113175338A (en) * | 2021-06-10 | 2021-07-27 | 福州大学 | Stack type support with impact-resistant hydraulic prop and working method thereof |
| CN116335739A (en) * | 2023-03-28 | 2023-06-27 | 山东科技大学 | Multistage pressure-yielding anti-impact device suitable for anchoring support |
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| CN112648332A (en) * | 2020-12-03 | 2021-04-13 | 北京科技大学 | Spherical cell hole ladder-shaped deformation ore pressure controller and method |
| CN113175338A (en) * | 2021-06-10 | 2021-07-27 | 福州大学 | Stack type support with impact-resistant hydraulic prop and working method thereof |
| CN116335739A (en) * | 2023-03-28 | 2023-06-27 | 山东科技大学 | Multistage pressure-yielding anti-impact device suitable for anchoring support |
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