CN202348302U - Anchor rod stress measuring device - Google Patents
Anchor rod stress measuring device Download PDFInfo
- Publication number
- CN202348302U CN202348302U CN2011204790078U CN201120479007U CN202348302U CN 202348302 U CN202348302 U CN 202348302U CN 2011204790078 U CN2011204790078 U CN 2011204790078U CN 201120479007 U CN201120479007 U CN 201120479007U CN 202348302 U CN202348302 U CN 202348302U
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- China
- Prior art keywords
- ring
- early warning
- anchor pole
- stressed
- determinator
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- Expired - Fee Related
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses an anchor rod stress measuring device, which comprises an upper gasket, a lower gasket, an initial ring, an early warning ring and a limit ring, wherein the three rings are high-rigidity brittle plastic material rings, the thicknesses are increased in turn, and the heights are reduced in turn; an external joint is arranged between the initial ring and the early warning ring; and an internal joint is arranged between the early warning ring and the limit ring. The anchor rod stress measuring device can set pretightening force of anchor rods in tunnels, chambers, surrounding rocks of tunnels and acquire and measure the pre-tightened stress conditions and finishes setting of the pretightening force of anchor rods according to break of the initial ring. The device has a small volume, a simple structure, low construction cost and is convenient to use, can measure the pretightening force of all anchor rods and stress conditions thereof in the project, and provides guarantee for safety of underground anchorage engineering in tunnels, chambers, the surrounding rocks of tunnels and the like of rock soil, geology and mines,.
Description
Technical field
The utility model relates to the stressed determinator of a kind of anchor pole; Be a kind ofly be used for tunnels such as ground, geology, mine, chamber, tunnel surrounding bolt support process pretightning force size is given and pretension after the device measured of stressing conditions collection, belong to field of engineering technology.
Background technology
Bolt pretension size apply and pretension after the intensity of stressing conditions and breaking surrounding rock closely related; And the existence of complicated country rock environment requires to apply different bolt pretensions; The too small purpose that improves country rock anchoring body intensity that do not reach of pretightning force; And bigger pretightning force also possibly cause the further aggravation of breaking surrounding rock, and both all can cause the inefficacy of bolt support shoulder bed effects.Thereby applying the strength reinforcing of breaking surrounding rock such as bolt support mine working, chamber, tunnel that reasonably bolt pretension is big or small is significant.
At present; Have elastic component electric power dynamometer, flat jack pointer-type of the stressed determinator of known anchor pole shows the multiple determinators such as even twisting moment nut of dynamometer and anchor bar body; Load-sensing unit directly is installed to the exposed junction of anchor pole; Measure the force-bearing situation of anchor pole, but because the dynamometer volume is big, cost is high and use inconvenience, it is only limited to the selective examination or the experimental study of minute quantity bolt pretension in the engineering and force-bearing situation thereof; Can not measure the pretightning force and the force-bearing situation thereof of anchor poles all in the engineering, this causes difficulty for the not enough potential safety hazard of getting rid of owing to anchor pole in the construction of bringing of pretightning force.
The utility model content
In order to overcome the deficiency that the stressed determinator volume of existing anchor pole is big, cost is high, use is inconvenient and be difficult to the pretightning force of all anchor poles in the engineering is measured; The utility model provides a kind of novel anchor pole stressed determinator; This device volume is little, simple in structure, cheap, easy to use; Can realize the pretightning force size and the force-bearing situation thereof of all anchor poles in the engineering are measured, for the safety of underground anchoring engineerings such as tunnels such as ground, geology, mine, chamber, tunnel surrounding provides safeguard.
The technical scheme of the utility model is: the stressed determinator of a kind of anchor pole; Comprise upper gasket, lower gasket; Initial ring, early warning ring and limit cycle circumferentially are set between the described upper and lower packing ring from outside to inside; Be provided with outer seam between described initial ring and the early warning ring, between described early warning ring and the limit cycle inseam be set.
Further, described initial ring, early warning ring and limit cycle are high rigidity fragility plastic material ring.
Further, the thickness of described initial ring, early warning ring and limit cycle increases successively.
Further, the height of described initial ring, early warning ring and limit cycle reduces successively.
The beneficial effect of the utility model is: the initial ring of the stressed determinator of anchor pole, early warning ring and limit cycle adopt high rigidity fragility plastic material, and along with pressure from surrounding rock increases, initial ring, early warning rim bearing carry when reaching disrumpent feelings; The expression anchor pole is stressed bigger, and reaches initial ring, early warning ring setting value, realizes the initially collection of ring, early warning ring stress value; If pressure from surrounding rock continues to increase; Limit cycle is carried and when reaching the disrumpent feelings limit, limit cycle is disrumpent feelings, realizes the collection of limit stress value.This device is discerned tunnel, chamber, tunnel surrounding bolt pretension size thus, and is given according to the disrumpent feelings completion bolt pretension size of initial ring.This device volume is little, simple in structure, cheap, easy to use; Can realize the pretightning force size of all anchor poles in the engineering and the mensuration of force-bearing situation thereof, for the safety of underground anchoring engineerings such as tunnels such as ground, geology, mine, chamber, tunnel surrounding provides safeguard.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the vertical view cutaway drawing of the utility model.
The specific embodiment
Below in conjunction with concrete embodiment the utility model is done explanation further.
Like Fig. 1, shown in Figure 2; The stressed determinator of the anchor pole of the utility model; Comprise upper gasket 2, lower gasket 4; Initial ring 5, early warning ring 6 and limit cycle 7 circumferentially are set between described upper gasket 2 and the lower gasket 4 from outside to inside, are provided with outer seam 8 between described initial ring 5 and the early warning ring 6, between described early warning ring 6 and the limit cycle 7 inseam 9 is set.Described initial ring 5, early warning ring 6 and limit cycle 7 are high rigidity fragility plastic material ring, and thickness increases successively, reduces highly successively.
In the underground construction of tunnel, chamber, tunnel surrounding, the stressed determinator of the anchor pole of the utility model is installed in the afterbody place of the exposed portions serve of squeezing into country rock anchor pole 1, install packing ring 2, limit cycle 7, early warning ring 6 after anchor pole 1 is squeezed in the country rock and initially encircle 5, lower gasket 4; Lower gasket 4; Under anchor nut is set, require the contact of each contact surface intact, stressed evenly; Apply bolt pretension and reach first knowledge ring 5 destructions in the stressed determinator of anchor pole, realize the given of the initial pretightning force of anchor pole.
When the anchor pole stress value reaches early warning ring 6 failure limit of the stressed determinator of anchor pole; Early warning ring 6 destroys, and realizes the collection of anchor pole early warning stress value, when reaching capacity ring 7 failure limit along with anchor pole stress value continuation increase; Limit cycle 7 is destroyed, and realizes the collection of anchor rod ultimate stress value.Simultaneously, destroy the space that forms by the stressed determinator of anchor pole three rings and realized that also anchor pole lets the effect of pressure off-load.
In actual use, operator's anchoring agent of at first in the country rock installing hole, packing into is squeezed into anchor pole afterwards and is rotated anchoring in installing hole; The anchor pole afterbody install packing ring 2, limit cycle 7, early warning ring 6 and initially encircle 5, lower gasket 4, lower gasket 4 is provided with anchor nut down; Require each element coaxial, the end face of the initial ring of the stressed determinator of anchor pole is contacted with upper and lower washer face closely, guarantee that anchor pole is stressed can be distributed on the initial ring of the stressed determinator of anchor pole through upper and lower packing ring; Afterwards; Apply pretightning force through anchor nut to anchor pole, reach and just know ring 5 destructions, realize the given of anchor pole regulation pretightning force value.This apparatus structure is simple, compact volume and convenience, easy operating, and is economical and practical.Simultaneously, in engineering surrounding rocks such as mine working and chamber control, reserve to let by the destruction of the initial ring of the stressed determinator of anchor pole 5, early warning ring 6 and limit cycle 7 and press the space, thus realize to anchor pole continue stressed down let pressure off-load effect.
The technical scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, and every technology distortion of making according to the technical scheme of the utility model all falls within the protection domain of the utility model.
Claims (4)
1. stressed determinator of anchor pole; It is characterized in that: the stressed determinator of described anchor pole comprises upper gasket, lower gasket; Circumferentially set gradually initial ring, early warning ring and limit cycle between the described upper and lower packing ring from outside to inside; Be provided with outer seam between described initial ring and the early warning ring, between described early warning ring and the limit cycle inseam be set.
2. the stressed determinator of anchor pole according to claim 1 is characterized in that: described initial ring, early warning ring and limit cycle are high rigidity fragility plastic material ring.
3. the stressed determinator of anchor pole according to claim 1 and 2 is characterized in that: the thickness of described initial ring, early warning ring and limit cycle increases successively.
4. the stressed determinator of anchor pole according to claim 1 and 2 is characterized in that: the height of described initial ring, early warning ring and limit cycle reduces successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204790078U CN202348302U (en) | 2011-11-28 | 2011-11-28 | Anchor rod stress measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204790078U CN202348302U (en) | 2011-11-28 | 2011-11-28 | Anchor rod stress measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348302U true CN202348302U (en) | 2012-07-25 |
Family
ID=46537311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204790078U Expired - Fee Related CN202348302U (en) | 2011-11-28 | 2011-11-28 | Anchor rod stress measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202348302U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675201A (en) * | 2016-01-05 | 2016-06-15 | 太原理工大学 | Device and method for monitoring unidirectional force |
-
2011
- 2011-11-28 CN CN2011204790078U patent/CN202348302U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675201A (en) * | 2016-01-05 | 2016-06-15 | 太原理工大学 | Device and method for monitoring unidirectional force |
| CN105675201B (en) * | 2016-01-05 | 2018-02-06 | 太原理工大学 | Unidirectional force monitoring device and monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20131128 |