CN107328542A - Anchor pole shock resistance dynamic quantitative experimental rig and its test method - Google Patents
Anchor pole shock resistance dynamic quantitative experimental rig and its test method Download PDFInfo
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- CN107328542A CN107328542A CN201710695466.1A CN201710695466A CN107328542A CN 107328542 A CN107328542 A CN 107328542A CN 201710695466 A CN201710695466 A CN 201710695466A CN 107328542 A CN107328542 A CN 107328542A
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- anchor pole
- anchor
- shock resistance
- sleeve
- high speed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Abstract
The invention discloses a kind of anchor pole shock resistance dynamic quantitative experimental rig and its test method, described experimental rig includes support, it is arranged on hold assembly and impact part on support, country rock is controlled by adjusting the chucking power of hold assembly to the operational factors of anchor pole, it is possible to achieve different anchorage lengths and the test of different anchor force condition lower bolt shock resistances；Height adjustable itself is realized in the regulation for adjusting oil cylinder by impact part, can be to different length anchor pole imposed load；Different load are applied to the anchor pole of different length by controlling the impulsive force of high speed hollow hydraulic cylinder to adjust；By regulating and controlling the loading velocity of high speed hydraulic cylinder, the shock resistance of friction speed lower bolt can be tested, so that real can realize the shock resistance testing experiment of different length anchor pole.
Description
Technical field
The present invention relates to suspension roof support technical field of measurement and test, the test system of more particularly to a kind of anchor pole shock resistance and
Its application method.
Background technology
Suspension roof support is the most frequently used support pattern of coal mine down-hole tunnel.But with the increase of coal mining depth, institute
The geological conditions run into becomes increasingly complex, and the destructive strong engineering project disaster such as rock burst caused by high stress and bump is more next
It is more frequent, serious.Under these conditions, the shock resistance that can accurately understand different anchoring condition lower bolts is to ensure anchoring
The key of supporting effect.
In order to test the shock resistance of anchor pole, it is necessary to research and develop corresponding test device.Application No.
A kind of dynamics of anchor rod Performance Test System of 201210093451.5 Introduction To Cn Patent, test specimen is fixed by clamping device
Top, utilize drop hammer test anchor pole or anchor cable dynamic performance；The Chinese patent of Application No. 201110387388.1 is situated between
Continued a kind of anchor rod performance test device, by the way that anchor pole one end is fixed, can using impact again disk and static-force hydraulic stretching device
To test the shock resistance and static mechanical performance of anchor pole respectively.Both the above device is all to fix anchor pole one end, to anchor pole
The other end directly apply shock loading, have ignored the interaction between anchor pole and country rock, it is impossible to exactly react scene should
With the shock resistance of middle anchor pole.In order to consider the interaction between anchor pole and country rock, Application No. 201510052234.5
Chinese patent disclose it is a kind of consider interaction between support-surrounding rock anchor pole shock resistance test system and its application process, profit
Effect of the country rock to anchor pole is simulated with steel pipe, but can not control country rock to the operational factors of anchor pole, it is impossible to quantitative analysis branch
The relation that shield-country rock interacts between anchor pole shock resistance.
In Practical Project, due to geological conditions and the difference of technical requirements, the size of anchor-holding force of anchor bolt and anchoring section
Length makes a big difference, and this shock resistance to anchor pole has large effect, in view of the above-mentioned problems, needing a kind of anchor of offer badly
Bar shock resistance dynamic quantitative experimental rig, realizes the quantitative test of different anchoring condition lower bolt shock resistances.
There is a kind of oil pressure actuated collet-type chuck in the market, mainly include revolution at a high speed oil cylinder and collet chuck, pass through oil
The release and clamping that collet chuck is realized with post-tensioning are pushed away before cylinder, oild chuck precision is high, and rotating speed is fast, is mainly used in lathe and various
Special machine is processed, clamping operation is carried out.But, because collet chuck inwall is smooth, if being used directly to the anchor pole of clamping anchorage,
It will certainly cause to occur to slide between sleeve and collet chuck to produce displacement, the displacement that the displacement and anchor pole are produced under impact force action
Mix and cannot be distinguished from, it is impossible to realize the purpose of Quantitative Monitoring anchor pole displacement.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of anchor pole shock resistance dynamic quantitative experimental rig and its examination
Proved recipe method, can realize the quantitative analysis of anchor pole shock resistance and anchorage length and anchor force.
To achieve these goals, the present invention uses following technical proposals：
A kind of anchor pole shock resistance dynamic quantitative experimental rig, including support, hold assembly and impact part, wherein：
Described hold assembly is provided with a door font outer framework, in the crossbeam of door font outer framework at the center of support
It is provided with anchor pole fixture；Described anchor pole fixture includes oil pressure actuated collet-type chuck and sleeve, oil pressure actuated collet-type chuck
Collet chuck lengthen, collet chuck inwall be provided with multi-turn groove；Described sleeve is outside a cylindrical sleeve with vertical cut (V. cut), sleeve
Wall is provided with the projection mutually agreed with collet chuck inboard wall groove of multi-turn, by raised and groove can prevent process of the test middle sleeve and
Relative slide occurs between collet chuck；
Described impact part is that, provided with a manual regulation oil cylinder, regulation oil cylinder is provided with one at the center of support
High speed hollow hydraulic cylinder, high speed hollow hydraulic cylinder axis and anchor pole are installed on door font inner frame, door font inner frame crossbeam
The collet chuck axis of fixture is overlapped, it is ensured that anchor pole can be passed through from high speed hollow hydraulic cylinder；It is manually operated regulation oil cylinder adjustment
The height of door font inner frame, so as to drive the height of high speed hydraulic cylinder to adjust, adapts it to the impact of different length anchor pole
The test of performance.
In order to prevent and treat when anchor pole is hit and is broken or deviates from from anchor pole fixture, anchor pole directly impacts support, regulation oil
Cylinder is provided with buffer rubber gasket.
The personal safety of operating personnel is threatened to prevent anchor pole to be pulled off, protective plate is surrounded by support.
It is to the method for anchor pole shock resistance progress dynamic quantitative experiment using experimental rig of the present invention：
The first step：Testing program is set
The purpose of experiment has two：One is the anchor pole to be measured for drawing same specification in different anchorage lengths, anchor force and punching
Result of the test in the case of hitting under power；Two be the anchor pole shock resistance quality for drawing different size；
Second step：Anchoring rod
First according to the requirement of testing program, the corresponding length at anchor rod anchored end to be tested is anchored in set with Anchor Agent
In cylinder, and place wait Anchor Agent drying；
Second step：Clamp anchor pole
Regulation adjusts oil cylinder manually so that regulation oil cylinder drops to extreme lower position, will be equipped with the sleeve clamping of anchor pole in oil
In the collet chuck of pressure driving collet-type chuck so that the projection on sleeve outer wall is stuck in the groove of collet chuck inwall；Rising tone fuel-economizing
Cylinder, regulation oil cylinder drives the high speed hollow hydraulic cylinder on door shape inner frame to rise, until rising to makes anchor pole lower end through height
Hole in the middle of fast hollow hydraulic cylinder, pallet is installed in anchor pole lower end and nut is fastened；By oil pressure actuated collet-type chuck to anchor pole
Apply chucking power,
3rd step：Dynamic quantitative impact test is carried out to anchor pole shock resistance
According to the testing program of setting, impulsive force is applied to anchor pole to be measured by high speed hollow hydraulic cylinder, in impact process
In, the displacement of the high speed hollow hydraulic cylinder in the case of the impulsive force, and the displacement that anchor pole is moved from sleeve are tested, passes through height
The displacement of fast hollow hydraulic cylinder subtracts the displacement that anchor pole is moved from sleeve, is the deflection of anchor pole；After the completion of experiment, unclamp
Retained part, takes out the anchor pole after sleeve, repairing experiment, and clears up sleeve, lower battery of tests is carried out according to step 2-3, with this
Analogize, until all anchor rod experiments to be measured are finished；
4th step：Analyze test data
Above-mentioned test data is subjected to lateral comparison and longitudinal comparison, the anchor to be measured of same specification is drawn by lateral comparison
Bar under different anchorage lengths, anchor force and impulsive force in the case of shock resistance, pass through longitudinal comparison different size anchor pole
Shock resistance quality.
Beneficial effects of the present invention：
(1) hold assembly that the present invention is designed can simulate active force of the country rock to anchor pole, collet chuck inboard wall groove and sleeve
The projection of outer wall is mutually agreed with, and prevents that relative slip occurs between process of the test middle sleeve and collet chuck, is Quantitative Monitoring anchor pole position
Shifting is laid a good groundwork；Country rock is controlled further through the chucking power of regulation hold assembly to the operational factors of anchor pole, it is possible to achieve no
Tested with anchorage length and different anchor force condition lower bolt shock resistances.
(2) height adjustable itself is realized in) regulation of the impact part that the present invention is designed by adjusting oil cylinder, can be to difference
Length anchor pole imposed load；The anchor pole of different length is applied not by controlling the impulsive force of high speed hollow hydraulic cylinder to adjust
Same load；By regulating and controlling the loading velocity of high speed hydraulic cylinder, the shock resistance of friction speed lower bolt can be tested, so that
The shock resistance testing experiment of different length anchor pole can be realized in fact.
(3) present invention is by the perfect adaptation of hold assembly and impact part, dynamic quantitative sunykatuib analysis supporting-country rock phase
Relation between interaction and anchor pole shock resistance, overcome at present to the test of anchor pole mechanical characteristic to anchor pole and country rock it
Interphase interaction lacks the limitation of quantitative study, can not only draw the anchor pole to be measured of same specification different anchorage lengths,
Result of the test in the case of under anchor force and impulsive force, can also be compared to the anchor pole shock resistance of different size, these
Achievement in research, to ensure that the different complex geological condition lower bolt supporting effects in underground provide the foundation of controllability.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of experimental rig of the present invention；
Fig. 2 is that experimental rig of the present invention installs the schematic diagram after anchor pole；
Fig. 3 is the collet chuck structure figure of oil pressure actuated collet-type chuck of the present invention；
Fig. 4 is the structure chart of hold assembly middle sleeve of the present invention；
Fig. 5 is the use state profile of hold assembly of the present invention.
Embodiment
Technical solution of the present invention is described further with embodiment with reference to the accompanying drawings.
As Figure 1-5, anchor pole shock resistance dynamic quantitative experimental rig of the present invention, including support 1, hold assembly 7
And impact part；
Described hold assembly 7 is provided with a door font outer framework 2, in door font outer framework at the center of support 1
Crossbeam 3 is provided with anchor pole fixture；Described anchor pole fixture includes oil pressure actuated collet-type chuck and sleeve, oil pressure actuated collet-type
The collet chuck 10 of chuck is lengthened, and the inwall of collet chuck 10 is provided with multi-turn groove 14；Described sleeve 15 is a cylinder with vertical cut (V. cut)
Shape sleeve, the outer wall of sleeve 15 is provided with the projection 16 that multi-turn is mutually agreed with the inboard wall groove of collet chuck 10, passes through projection 16 and groove 14
It can prevent that relative slide occurs between process of the test middle sleeve 15 and collet chuck 10；
Described impact part is that, provided with a manual regulation oil cylinder 6, regulation oil cylinder 6 is provided with the center of support 1
High speed hollow hydraulic cylinder 8, high speed hollow hydraulic cylinder 8 are installed on one door font inner frame 4, the crossbeam 5 of door font inner frame
Axis is overlapped with the axis of collet chuck 10, it is ensured that anchor pole can be passed through from high speed hollow hydraulic cylinder 8；It is manually operated regulation oil cylinder 6
The height of door font inner frame 4 is adjusted, so as to drive the height of high speed hollow hydraulic cylinder 8 to adjust, different length are adapted it to
Spend the test of anchor pole impact property
In order to prevent and treat when anchor pole is hit and is broken or deviates from from anchor pole fixture, anchor pole 11 directly impacts support 1, is adjusting
Fuel-economizing cylinder 6 is provided with buffer rubber gasket 9.
The personal safety of operating personnel is threatened to prevent anchor pole 11 to be pulled off, protective plate is surrounded by support 1.
Oil pressure actuated collet-type chuck of the present invention can select the CPC-60A8 cylinders of the sharp secret Machinery Co., Ltd. of Dongguan moral
Press from both sides chuck.
It is to the method for anchor pole shock resistance progress dynamic quantitative experiment using experimental rig of the present invention：
The first step：Testing program is set
The purpose of experiment has two：One is the anchor pole to be measured for drawing same specification in different anchorage lengths, anchor force and punching
Result of the test in the case of hitting under power；Two be the anchor pole shock resistance quality for drawing different size.
Second step：Anchoring rod
First according to the requirement of testing program, the corresponding length of the anchored end of anchor pole 11 to be tested is anchored with Anchor Agent 17
In sleeve 15, and place wait Anchor Agent 17 dry；
Second step：Clamp anchor pole
Regulation adjusts oil cylinder 6 manually so that regulation oil cylinder 6 drops to extreme lower position, and the sleeve 15 that will be equipped with anchor pole 11 is pressed from both sides
Hold in the collet chuck 10 of oil pressure actuated collet-type chuck so that the projection 16 on the outer wall of sleeve 15 is stuck in the groove of the inwall of collet chuck 10
In 14；Rising tone fuel-economizing cylinder 6, regulation oil cylinder 6 drives the high speed hollow hydraulic cylinder 8 on door shape inner frame 4 to rise, until rising
To making the lower end of anchor pole 11 through the hole in the middle of high speed hollow hydraulic cylinder 8, pallet 12 is installed in the lower end of anchor pole 11 and nut 13 is fastened；It is logical
Cross oil pressure actuated collet-type chuck and chucking power applied to anchor pole 11,
3rd step：Dynamic quantitative impact test is carried out to anchor pole shock resistance
According to the testing program of setting, impulsive force is applied to anchor pole 11 to be measured by high speed hollow hydraulic cylinder 8, impacted
Cheng Zhong, tests the displacement of the high speed hollow hydraulic cylinder 8 in the case of the impulsive force, and the position that anchor pole 11 is moved from sleeve 15
Move, the displacement that anchor pole 11 is moved from sleeve 15 is subtracted by the displacement of high speed hollow hydraulic cylinder 8, is the deformation of anchor pole 11
Amount；After the completion of experiment, hold assembly is unclamped, the anchor pole 11 after sleeve 15, repairing experiment is taken out, and clears up sleeve 15, according to step
Rapid 2-3 carries out lower battery of tests, by that analogy, until all experiments of anchor pole 11 to be measured are finished；
4th step：Analyze test data
Above-mentioned test data is subjected to lateral comparison and longitudinal comparison, the anchor to be measured of same specification is drawn by lateral comparison
Bar 11 under different anchorage lengths, anchor force and impulsive force in the case of shock resistance, pass through longitudinal comparison different size anchor
The shock resistance quality of bar.
Claims (4)
1. a kind of anchor pole shock resistance dynamic quantitative experimental rig, it is characterised in that it includes support, hold assembly and impact
Part, wherein：
Described hold assembly is, provided with a door font outer framework, to be set on the crossbeam of door font outer framework at the center of support
There is anchor pole fixture；Described anchor pole fixture includes oil pressure actuated collet-type chuck and sleeve, the cylinder of oil pressure actuated collet-type chuck
Folder is lengthened, and collet chuck inwall is provided with multi-turn groove；Described sleeve is on a cylindrical sleeve with vertical cut (V. cut), sleeve outer wall
The projection mutually agreed with collet chuck inboard wall groove provided with multi-turn, process of the test middle sleeve and collet chuck can be prevented by raised and groove
Between occur relative slide；
Described impact part is that regulation oil cylinder is provided with a door word provided with a manual regulation oil cylinder at the center of support
High speed hollow hydraulic cylinder, high speed hollow hydraulic cylinder axis and anchor pole fixture are installed on shape inner frame, door font inner frame crossbeam
Collet chuck axis overlap, it is ensured that anchor pole can be passed through from high speed hollow hydraulic cylinder；It is manually operated regulation oil cylinder adjustment door word
The height of shape inner frame, so as to drive the height of high speed hydraulic cylinder to adjust, adapts it to different length anchor pole impact property
Test.
2. anchor pole shock resistance dynamic quantitative experimental rig as claimed in claim 1, it is characterised in that described regulation oil
Cylinder is provided with buffer rubber gasket.
3. anchor pole shock resistance dynamic quantitative experimental rig as claimed in claim 1, it is characterised in that set in support surrounding
There is protective plate.
4. a kind of test method of anchor pole shock resistance dynamic quantitative experimental rig as described in claim 1-3 is any, its
It is characterised by, step is：
The first step：Testing program is set
The purpose of experiment has two：One is the anchor pole to be measured for drawing same specification in different anchorage lengths, anchor force and impulsive force
Result of the test in the case of lower；Two be the anchor pole shock resistance quality for drawing different size；
Second step：Anchoring rod
First according to the requirement of testing program, the corresponding length at anchor rod anchored end to be tested is anchored in sleeve with Anchor Agent
In, and place wait Anchor Agent drying；
Second step：Clamp anchor pole
Regulation adjusts oil cylinder manually so that regulation oil cylinder drops to extreme lower position, and the sleeve clamping that will be equipped with anchor pole drives in oil pressure
In the collet chuck of dynamic collet-type chuck so that the projection on sleeve outer wall is stuck in the groove of collet chuck inwall；Rising tone fuel-economizing cylinder, is adjusted
Fuel-economizing cylinder drives the high speed hollow hydraulic cylinder on door shape inner frame to rise, until rising to makes anchor pole lower end hollow through high speed
Hole in the middle of hydraulic cylinder, pallet is installed in anchor pole lower end and nut is fastened；Anchor pole is applied by oil pressure actuated collet-type chuck and pressed from both sides
Holding force,
3rd step：Dynamic quantitative impact test is carried out to anchor pole shock resistance
According to the testing program of setting, impulsive force is applied to anchor pole to be measured by high speed hollow hydraulic cylinder, in impact process, surveyed
The displacement of the high speed hollow hydraulic cylinder in the case of the impulsive force, and the displacement that anchor pole is moved from sleeve are tried, by high speed
The displacement of empty hydraulic cylinder subtracts the displacement that anchor pole is moved from sleeve, is the deflection of anchor pole；After the completion of experiment, clamping is unclamped
Part, takes out the anchor pole after sleeve, repairing experiment, and clears up sleeve, and lower battery of tests is carried out according to step 2-3, by that analogy,
Until all anchor rod experiments to be measured are finished；
4th step：Analyze test data
Above-mentioned test data is subjected to lateral comparison and longitudinal comparison, the anchor pole to be measured for drawing same specification by lateral comparison exists
Shock resistance in the case of under different anchorage lengths, anchor force and impulsive force, passes through the anti-of longitudinal comparison different size anchor pole
Impact property quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710695466.1A CN107328542B (en) | 2017-08-15 | 2017-08-15 | Dynamic quantitative test device and method for shock resistance of anchor rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710695466.1A CN107328542B (en) | 2017-08-15 | 2017-08-15 | Dynamic quantitative test device and method for shock resistance of anchor rod |
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| Publication Number | Publication Date |
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| CN107328542A true CN107328542A (en) | 2017-11-07 |
| CN107328542B CN107328542B (en) | 2023-06-09 |
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|---|---|---|---|
| CN201710695466.1A Active CN107328542B (en) | 2017-08-15 | 2017-08-15 | Dynamic quantitative test device and method for shock resistance of anchor rod |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668798A (en) * | 2018-07-13 | 2019-04-23 | 中国矿业大学(北京) | A kind of anchor pole shock resistance experimental apparatus for testing and method |
| CN110455629A (en) * | 2019-09-19 | 2019-11-15 | 河南理工大学 | A kind of reversible type anchor pole work creep drawing characteristic test system |
| CN112067224A (en) * | 2020-09-18 | 2020-12-11 | 中煤科工开采研究院有限公司 | Detection method for whole-course dynamic load response characteristic of anchor rod in drop hammer impact mode |
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|---|---|---|---|---|
| CN109668798A (en) * | 2018-07-13 | 2019-04-23 | 中国矿业大学(北京) | A kind of anchor pole shock resistance experimental apparatus for testing and method |
| CN110455629A (en) * | 2019-09-19 | 2019-11-15 | 河南理工大学 | A kind of reversible type anchor pole work creep drawing characteristic test system |
| CN112067224A (en) * | 2020-09-18 | 2020-12-11 | 中煤科工开采研究院有限公司 | Detection method for whole-course dynamic load response characteristic of anchor rod in drop hammer impact mode |
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| Publication number | Publication date |
|---|---|
| CN107328542B (en) | 2023-06-09 |
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