CN204002882U - A kind of Multifunctional anchor rod - Google Patents
A kind of Multifunctional anchor rod Download PDFInfo
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- CN204002882U CN204002882U CN201420316146.2U CN201420316146U CN204002882U CN 204002882 U CN204002882 U CN 204002882U CN 201420316146 U CN201420316146 U CN 201420316146U CN 204002882 U CN204002882 U CN 204002882U
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- rod
- anchor
- collar
- strain gage
- digital display
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Abstract
The utility model belongs to coal mine support safety technics field, particularly relate to a kind of Multifunctional anchor rod being applied in colliery tunnel support, comprise the solid body of rod, the lower end of the body of rod is provided with pallet, the collar and nut from top to bottom successively, collar inwall has annular groove, pastes collar inwall and be provided with external resistance strain gage in groove, and the external surface of resistance strain gage is stained with fluid sealant, its inner surface is connected with digital display stress sheet through wire, on digital display stress sheet, is provided with warning light.Advantage of the present utility model is: by warning light, directly differentiate whether pretightning force is up to standard, whether anchor support force lost efficacy, and without artificial reading one by one, convenient and swift, show in real time the stressed of anchor pole, simple, intuitive, efficient energy-saving, is suitable for large-scale promotion.
Description
Technical field
The utility model belongs to coal mine support safety technics field, particularly relates to a kind of Multifunctional anchor rod being applied in colliery tunnel support.
Background technology
Bolt support as a kind of effectively, development heading support pattern that Technological Economy is superior, in China's coal-mine tunnel, use the history of existing more than 50 years so far.The bolt support proportion in the state-owned colliery of China surpasses 60% at present, and some mining area has surpassed 90%, even reaches 100%.Bolt support mainly refers to squeezes into the body of rod in pre-drilled hole, by Anchor Agent, country rock and rock mass stability is bonded together and produces suspension effectiveness (or compound beam effect, reinforcing effect); By the axial force of anchor pole, by rock mass within the scope of anchoring, by unidirectional (or two-way) compression chord state-transition, be three dimension stress state, thereby improve its hoop compressive strength, make anchoring body both can bear himself weight, can bear certain external load again, make its deformation controlling for rock surrounding gateways effectively, and then reach the object of supporting.Bolt support is as a kind of active support simple in structure, it can ensure integrality, the stability of roadway surrounding rock to greatest extent, the development in deformation controlling for rock surrounding gateways, displacement and crack effectively, give full play to the supporting role of country rock self, country rock is become to supporting body from load, and change passive protecting is active support, and it is high to have transportation easy construction, efficiency, be conducive to accelerating construction progress, and the advantage such as construction cost is low, supporting effect is good, economic benefit is obvious.
Anchor pole is as the tensional element that gos deep into stratum, its one end is connected with engineering structure, and the other end gos deep in stratum, and whole anchor pole is divided into free segment and anchoring section, free segment refers to the region that the pulling force at anchor pole head place is reached to anchoring body, and its function is that anchor pole is applied to prestressing force; Anchoring section refers to that cement slurry is by the region of presstressed reinforcing steel and soil layer bonding, and its function is that the bonding rubbing action of anchoring body and soil layer is increased, and increases the pressure-bearing effect of anchoring body, and the pulling force of free segment is reached to soil body depths.
Bolt support is as a kind of active simple in structure, immediate support, is mainly reflected in Bolt System roadway surrounding rock is applied to larger, preliminary bracing resistance timely.Preliminary bracing resistance is that the first anchor-hold by anchor pole produces, and the first anchor-hold of anchor pole is that the pretightning force being applied on anchor pole during by skyhook produces.Bolt pretension is to embody the initiative of bolt support and the leading indicator of promptness.Reasonably pretightning force can improve the self-supporting ability of country rock, guarantees that whole bolt support system gives full play to supporting usefulness.The anchor support force of anchor pole is the important indicator that judges whether anchor pole lost efficacy.Pretightning force whether apply put in place and bolt support process in anchor support force whether lost efficacy be that roadway support is successfully crucial.
Existing documents: patent publication No. CN203145978U (with the anchor pole of safety detection device), this patent discloses a kind of anchor pole with safety detection device, by increasing rock bolt extensometer, read dynamometer numerical value, but only reading numerical values is differentiated artificially, not only spend that manpower and materials are many but also efficiency is also very low, anchor pole anchor support force also cannot display after losing efficacy intuitively, can not point out supervisor of construction in the very first time.Cause monitoring periods to increase, information delay, serious also can cause potential safety hazard.
Utility model content
The utility model overcomes above deficiency, provide a kind of not only can Real-Time Monitoring pretightning force, and a kind of Multifunctional anchor rod can early warning anchor support force losing efficacy.
The utility model provides a kind of Multifunctional anchor rod, comprise the solid body of rod, the lower end of the body of rod is provided with pallet, the collar and nut from top to bottom successively, collar inwall has annular groove, in groove, paste collar inwall and be provided with resistance strain gage, the external surface of resistance strain gage is stained with fluid sealant, and its inner surface is connected with external digital display stress sheet through wire, on digital display stress sheet, is provided with warning light.
Preferred version is as follows:
The body of rod is screw-thread steel solid hopkinson bar, more preferably left hand thread steel solid hopkinson bar.Adopt this structure mainly according to digging tool direction of rotation, to do, prevent anchor pole and exit phenomenon, in the majority with levoform anchor pole at present.
Pallet is plane pallet, can guarantee, when applying external force, to make body of rod stress equalization.Wherein, use nut that the collar and pallet are fixed together.
Warning light is LED lamp, is divided into the alarm green light of normal operating conditions and the alarm red light of abnormality.
Wherein, resistance strain gage is metal forming shape, and fluid sealant is bonded in resistance strain gage firmly along in the groove of anchor rod body axial direction, makes it become as a whole with the collar.The inner surface of resistance strain gage is connected with digital display stress sheet through wire, and when the body of rod is stressed while changing, resistance strain gage produces deformation, and then the resistance of change resistance strain gage, by wire, be delivered on digital display stress sheet, what digital display stress sheet showed is the stress value of the body of rod.To the stressed setting threshold values of the body of rod, be 8-10t, routine is chosen as 8t, warning light green light when the pretightning force applying reaches threshold values, and now anchor pole is in normal operating conditions; When body of rod anchor support force is during lower than pretightning force threshold values, warning light when red, anchor pole lost efficacy.Thereby realized the function that whether Real-Time Monitoring bolt pretension is up to standard and whether timely early warning anchor pole anchor support force lost efficacy.
Advantage of the present utility model is: by warning light, directly differentiate whether pretightning force is up to standard, whether anchor support force lost efficacy, and without artificial reading one by one, convenient and swift, show in real time the stressed of anchor pole, simple, intuitive, efficient energy-saving, is suitable for large-scale promotion.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the longitudinal plan of the collar of the present utility model.
Fig. 3 is the digital display stress sheet in the utility model.
Fig. 4 is the digital display stress sheet data handling procedure theory diagram in the utility model.
In figure: 1. the body of rod, 2. pallet, 3. digital display stress sheet, 4. nut, the 5. collar, 6.LED warning light, 7. resistance strain gage, 8. fluid sealant.
The specific embodiment
Below in conjunction with Fig. 1,2,3,4 pairs of the present embodiment, be further described, but the utility model is not limited to specific embodiment.
Embodiment 1
A kind of Multifunctional anchor rod, comprise the solid body of rod 1, the lower end of the body of rod 1 is provided with pallet 2, the collar 5 and nut 4 from top to bottom successively, the collar 5 inwalls have annular groove, in groove, paste the collar 5 inwalls and be provided with resistance strain gage 7, the external surface of resistance strain gage 7 is stained with fluid sealant 8, its inner surface is connected with external digital display stress sheet 3 through wire, on digital display stress sheet 3, be provided with warning light 6, warning light 6 is LED lamp, and warning light 6 is divided into the alarm green light of normal operating conditions and the alarm red light of abnormality.
The body of rod 1 is left hand thread steel solid hopkinson bar, adopts this structure mainly according to digging tool direction of rotation, to do, and prevents anchor pole and exits phenomenon, in the majority with levoform anchor pole at present.
Pallet 2 is plane pallet, can guarantee when applying external force, makes the body of rod 1 stress equalization.Wherein, use nut 4 that the collar 5 and pallet 2 are fixed together.
Wherein, resistance strain gage 7 is metal forming shape, and fluid sealant 8 is bonded in resistance strain gage 7 firmly along in the groove of anchor rod body 1 axial direction, makes 5 one-tenth of itself and the collars as a whole.The inner surface of resistance strain gage 7 is connected with digital display stress sheet 3 through wire, and when the body of rod 1 is stressed while changing, resistance strain gage 7 produces deformation, and then the resistance of change resistance strain gage 7, by wire, be delivered on digital display stress sheet 3, what digital display stress sheet 3 showed is the stress value of the body of rod 1.To the stressed setting threshold values of the body of rod 1, be 8t, warning light 6 green lights when the pretightning force applying reaches threshold values, now anchor pole is in normal operating conditions; When anchor pole anchor support force is during lower than pretightning force threshold values, warning light 6 when reds, anchor pole lost efficacy.Thereby whether realized Real-Time Monitoring bolt pretension up to standard, and the function that whether early warning anchor pole anchor support force lost efficacy in time.
As known by the technical knowledge, within the designed anchor rod device of any employing and the utility model similar technical characteristics all falls into protection domain of the present utility model.
Claims (1)
1. a Multifunctional anchor rod, comprise the solid body of rod, the lower end of the body of rod is provided with pallet, the collar and nut from top to bottom successively, it is characterized in that: collar inwall has annular groove, in groove, paste collar inwall and be provided with resistance strain gage, the external surface of resistance strain gage is stained with fluid sealant, and its inner surface is connected with external digital display stress sheet through wire, on digital display stress sheet, is provided with warning light; The described body of rod is screw-thread steel solid hopkinson bar; The described body of rod is left hand thread steel solid hopkinson bar; Described pallet is plane pallet; Described warning light is LED lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420316146.2U CN204002882U (en) | 2014-06-13 | 2014-06-13 | A kind of Multifunctional anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420316146.2U CN204002882U (en) | 2014-06-13 | 2014-06-13 | A kind of Multifunctional anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204002882U true CN204002882U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420316146.2U Expired - Fee Related CN204002882U (en) | 2014-06-13 | 2014-06-13 | A kind of Multifunctional anchor rod |
Country Status (1)
| Country | Link |
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| CN (1) | CN204002882U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179017A (en) * | 2015-10-15 | 2015-12-23 | 王新丰 | Comprehensive displacement-strain early warning system for anchor rod |
| CN107083980A (en) * | 2017-06-15 | 2017-08-22 | 湖南科技大学 | The country rock disaster alarm method and anchoring prior-warning device of a kind of roadway supported by bolt |
| CN111075487A (en) * | 2019-12-31 | 2020-04-28 | 西南石油大学 | Anchor rod with function of measuring surrounding rock strain and temperature coupling |
| CN111980737A (en) * | 2020-09-01 | 2020-11-24 | 太原理工大学 | Rock wall inner anchor rod stress fracture early warning indicating device |
-
2014
- 2014-06-13 CN CN201420316146.2U patent/CN204002882U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179017A (en) * | 2015-10-15 | 2015-12-23 | 王新丰 | Comprehensive displacement-strain early warning system for anchor rod |
| CN105179017B (en) * | 2015-10-15 | 2017-12-08 | 湘潭大学 | Displacement strains anchor pole Integrated Early Warning System |
| CN107083980A (en) * | 2017-06-15 | 2017-08-22 | 湖南科技大学 | The country rock disaster alarm method and anchoring prior-warning device of a kind of roadway supported by bolt |
| CN107083980B (en) * | 2017-06-15 | 2023-06-30 | 湖南科技大学 | Surrounding rock disaster early warning method and anchor early warning device for anchor bolt supporting roadway |
| CN111075487A (en) * | 2019-12-31 | 2020-04-28 | 西南石油大学 | Anchor rod with function of measuring surrounding rock strain and temperature coupling |
| CN111075487B (en) * | 2019-12-31 | 2024-05-24 | 西南石油大学 | Anchor rod with function of measuring surrounding rock strain and temperature coupling |
| CN111980737A (en) * | 2020-09-01 | 2020-11-24 | 太原理工大学 | Rock wall inner anchor rod stress fracture early warning indicating device |
| CN111980737B (en) * | 2020-09-01 | 2022-07-05 | 太原理工大学 | Rock wall inner anchor rod stress fracture early warning indicating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20160613 |
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| CF01 | Termination of patent right due to non-payment of annual fee |