CN208650884U - A kind of anchor bar body crossrib structure - Google Patents
A kind of anchor bar body crossrib structure Download PDFInfo
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- CN208650884U CN208650884U CN201820962348.2U CN201820962348U CN208650884U CN 208650884 U CN208650884 U CN 208650884U CN 201820962348 U CN201820962348 U CN 201820962348U CN 208650884 U CN208650884 U CN 208650884U
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- cross rib
- rod
- cross
- anchor bar
- bar body
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Abstract
A kind of anchor bar body crossrib structure, including the body of rod and cross rib, cross rib are arranged in body of rod outer surface；Helically form is configured cross rib around the body of rod, and several cross ribs are axially spacedly distributed along the body of rod, and the rotational phase angle between two endpoints of cross rib with 405 ° ± 5 °；Cross rib has helix angle in body of rod outer surface, and helix angle is 10 ° ± 1 °；Whole cross rib rotation directions having the same；The cross sectional shape of cross rib is isosceles trapezoid；The top margin axial direction maximum width of cross rib is 1.5mm ± 0.3mm, and the bottom edge axial direction maximum width of cross rib is 3.6mm ± 0.7mm, and the radial maximum gauge of cross rib is 2mm ± 0.4mm, and the bevel edge of cross rib and the angle on bottom edge are 60 ° ± 1 °；Several cross ribs are 50mm ± 2.5mm along the spacing distance that the body of rod is axially spacedly distributed；The bar diameter of the body of rod is 20mm ± 0.5mm.
Description
Technical field
The utility model belongs to tunnel safety support technology field, more particularly to a kind of anchor bar body crossrib structure.
Background technique
In shaft production, the stability in tunnel is the important leverage of mine safety production, and suspension roof support is as tunnel
The anchor force of the major way of supporting, anchor bar body directly influences supporting effect of roadway.
Currently, anchor bar body used in suspension roof support is all based on what building iron standard slightly improved, but with
Being continuously increased for cutting depth, roadway surrounding rock condition also constantly deteriorating, it is desirable to further promote lane by conventional anchor body
Road supporting effect becomes more difficult, by the study found that crossrib structure used by conventional anchor body is to hinder roadway support
The main factor that effect is further promoted.Therefore, it is necessary to be improved to anchor bar body crossrib structure, to promote anchor bar body
Anchor force realizes the further promotion of supporting effect of roadway.
Utility model content
In view of the problems of the existing technology, the utility model provides a kind of anchor bar body crossrib structure, can effectively be promoted
Anchor force between anchor bar body and Anchor Agent effectively enhances anchor bar body and shears to Anchor Agent in anchor bar body stress withdrawal process
Radial compression effect when destruction, so that the country rock around drilling is in three-dimensional stress state, and then improves supporting effect of roadway.
To achieve the goals above, the utility model adopts the following technical solution: a kind of anchor bar body crossrib structure, including bar
Body and cross rib, cross rib are arranged in body of rod outer surface；Its main feature is that: helically form is configured cross rib around the body of rod, several cross
Rib is axially spacedly distributed along the body of rod, and the rotational phase angle between two endpoints of cross rib with 405 ° ± 5 °.
The cross rib has helix angle in body of rod outer surface, and helix angle is 10 ° ± 1 °.
All cross rib rotation directions having the same.
The cross sectional shape of the cross rib is isosceles trapezoid.
The top margin axial direction maximum width of the cross rib is 1.5mm ± 0.3mm, and the bottom edge axial direction maximum width of cross rib is
The radial maximum gauge of 3.6mm ± 0.7mm, cross rib are 2mm ± 0.4mm, and the bevel edge of cross rib and the angle on bottom edge are 60 ° ± 1 °.
Several cross ribs are 50mm ± 2.5mm along the spacing distance that the body of rod is axially spacedly distributed.
The bar diameter of the body of rod is 20mm ± 0.5mm.
The utility model has the beneficial effects that
The utility model compared with prior art, can effectively promote the anchor force between anchor bar body and Anchor Agent, in anchor
In body of rod stress withdrawal process, effectively enhance radial compression effect of the anchor bar body to Anchor Agent failure by shear when, so that drilling week
The country rock enclosed is in three-dimensional stress state, and then improves supporting effect of roadway.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of anchor bar body crossrib structure of the utility model；
Fig. 2 is A-A cross-sectional view in Fig. 1；
In figure, the 1-body of rod, 2-cross ribs.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, 2, a kind of anchor bar body crossrib structure, including the body of rod 1 and cross rib 2, cross rib 2 are arranged in 1 appearance of the body of rod
Face；Helically form is configured cross rib 2 around the body of rod 1, and several cross ribs 2 are axially spacedly distributed along the body of rod 1, and 2 liang of cross rib
There is 405 ° ± 5 ° of rotational phase angle α between a endpoint.
The cross rib 2 has helix angle θ in 1 outer surface of the body of rod, and helix angle θ is 10 ° ± 1 °.
The all cross rib 2 rotation directions having the same.
The cross sectional shape of the cross rib 2 is isosceles trapezoid.
The top margin axial direction maximum width a of the cross rib 2 is 1.5mm ± 0.3mm, and the bottom edge axial direction maximum width b of cross rib 2 is
3.6mm ± 0.7mm, the radial maximum gauge h of cross rib 2 are 2mm ± 0.4mm, the bevel edge of cross rib 2 and the angle α on bottom edge be 60 ° ±
1°。
Several cross ribs 2 are 50mm ± 2.5mm along the spacing distance L that the body of rod 1 is axially spacedly distributed.
The bar diameter of the body of rod 1For 20mm ± 0.5mm.
In order to better illustrate anchor bar body after the crossrib structure for using the utility model, anchor bar body can be effectively promoted
The anchor force between Anchor Agent has then carried out live comparison pull-out test.It compares in pull-out test at the scene, and has chosen two
Mining area is as test site, in the first mining area, by use the utility model crossrib structure anchor bar body respectively with mining area coal
Side anchor pole and rock side anchor pole compare test, and wherein the bar diameter of coal side anchor pole is 20mm, and the bar diameter of rock side anchor pole is 22mm；
In the second mining area, individually anchor pole is helped to compare examination with mining area coal the anchor bar body for using the utility model crossrib structure
It tests, and the bar diameter of coal side anchor pole is 20mm.
3 kinds of mine anchor rod bodies in two mining areas are traditional cross rib, and 3 kinds of mine anchor rod bodies are anchored at the length of country rock body
It is 150mm.
After drawing and repeatedly pulling out test, following result is obtained:
Coal in the first mining area helps position, use the average pulling capacity of the anchor bar body of the utility model crossrib structure for
39.7kN, and the average pulling capacity of coal side anchor pole is 32kN；
Rock in the first mining area helps position, use the average pulling capacity of the anchor bar body of the utility model crossrib structure for
138.9kN, and the average pulling capacity of rock side anchor pole is 103.5kN；
Coal in the second mining area helps position, use the average pulling capacity of the anchor bar body of the utility model crossrib structure for
112.3kN, and the average pulling capacity of coal side anchor pole is 79.6kN.
As it can be seen that either the first mining area or the second mining area use the utility model cross rib even if geological environment is different
For the anchor bar body of structure compared with using 3 kinds of mine anchor rod bodies of traditional cross rib, anchor force has obtained effective promotion.Due to tradition
The rib side cross rib spacing that has of anchor bar body is 12mm, and in equal length, conventional anchor body is possessed compared with the utility model
Cross rib is more, and under conventional thought, conventional anchor body should have higher withdrawal resistance since cross rib is more, but
The result that pull-out test obtains is but just on the contrary, illustrating that cross rib quantity is not is the single factor for influencing pulling capacity.
In the embodiment of the utility model, why the spacing distance L of adjacent cross rib 2 is determined as 50mm ± 2.5mm, is
Because have passed through a large amount of laboratory test process in the case where the radial maximum gauge h of cross rib 2 is 2mm ± 0.4mm,
Verification result illustrates that the anchor force effect at this time between anchor bar body and Anchor Agent can achieve most preferably.
In the embodiment of the utility model, the revolution phase between 2 two endpoints of cross rib with 405 ° ± 5 ° why is set
Parallactic angle α is that there are apleuria side Anchor Agent overflow problems because of the cross rib on conventional anchor body, in preliminary design scheme, cross rib 2
Between two endpoints originally tool have plenty of 360 ° rotational phase angle α (i.e. cross rib 2 the body of rod 1 it is circumferential in it is whole circumferentially around point
Cloth), but discovery Anchor Agent overflow problem still has in test, increases 45 ° ± 5 ° on the basis of 360 ° again thus, anchoring
Agent overflow problem is solved.
In the embodiment of the utility model, helically form is distributed cross rib 2 around the body of rod 1, and the section shape of cross rib 2
Shape is isosceles trapezoid, in anchor bar body stress withdrawal process, is proved by pull-out test, in anchor bar body to Anchor Agent failure by shear
When, anchor bar body, which acts on the radial compression of Anchor Agent, effectively to be enhanced, and then the country rock around drilling is made to be in three-dimensional stress
State directly translates into the promotion of anchor force, and what is finally improved is supporting effect of roadway.
Scheme in embodiment is not the scope of patent protection to limit the utility model, all without departing from the utility model
Carried out by equivalence enforcement or change, be both contained in the scope of the patents of this case.
Claims (7)
1. a kind of anchor bar body crossrib structure, including the body of rod and cross rib, cross rib is arranged in body of rod outer surface；It is characterized by: cross rib
Helically form is configured around the body of rod, and several cross ribs are axially spacedly distributed along the body of rod, and is had between two endpoints of cross rib
There is 405 ° ± 5 ° of rotational phase angle.
2. a kind of anchor bar body crossrib structure according to claim 1, it is characterised in that: the cross rib is in body of rod appearance mask
There is helix angle, and helix angle is 10 ° ± 1 °.
3. a kind of anchor bar body crossrib structure according to claim 2, it is characterised in that: all the cross rib is having the same
Rotation direction.
4. a kind of anchor bar body crossrib structure according to claim 1, it is characterised in that: the cross sectional shape of the cross rib be etc.
Waist is trapezoidal.
5. a kind of anchor bar body crossrib structure according to claim 4, it is characterised in that: the top margin of the cross rib is axial maximum
Width is 1.5mm ± 0.3mm, and the bottom edge axial direction maximum width of cross rib is 3.6mm ± 0.7mm, and the radial maximum gauge of cross rib is
2mm ± 0.4mm, the bevel edge of cross rib and the angle on bottom edge are 60 ° ± 1 °.
6. a kind of anchor bar body crossrib structure according to claim 1, it is characterised in that: several cross ribs are along body of rod axial direction
The spacing distance being spacedly distributed is 50mm ± 2.5mm.
7. a kind of anchor bar body crossrib structure according to claim 1, it is characterised in that: the bar diameter of the body of rod be 20mm ±
0.5mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820962348.2U CN208650884U (en) | 2018-06-21 | 2018-06-21 | A kind of anchor bar body crossrib structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820962348.2U CN208650884U (en) | 2018-06-21 | 2018-06-21 | A kind of anchor bar body crossrib structure |
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| Publication Number | Publication Date |
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| CN208650884U true CN208650884U (en) | 2019-03-26 |
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| CN201820962348.2U Active CN208650884U (en) | 2018-06-21 | 2018-06-21 | A kind of anchor bar body crossrib structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547650A (en) * | 2018-06-21 | 2018-09-18 | 辽宁工程技术大学 | A kind of anchor bar body crossrib structure |
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2018
- 2018-06-21 CN CN201820962348.2U patent/CN208650884U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547650A (en) * | 2018-06-21 | 2018-09-18 | 辽宁工程技术大学 | A kind of anchor bar body crossrib structure |
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