CN203515627U - Rotatable direction-changing anchor rod - Google Patents
Rotatable direction-changing anchor rod Download PDFInfo
- Publication number
- CN203515627U CN203515627U CN201320611591.7U CN201320611591U CN203515627U CN 203515627 U CN203515627 U CN 203515627U CN 201320611591 U CN201320611591 U CN 201320611591U CN 203515627 U CN203515627 U CN 203515627U
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- CN
- China
- Prior art keywords
- cambered surface
- arched
- anchor rod
- nut
- tray
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a rotatable direction-changing anchor rod which comprises an anchor rod body, a cambered surface arched tray and an arched nut. The whole cambered surface arched tray is square, the cross section of the cambered surface arched tray is arched, and a cambered surface structure is arranged at the center of the tray. One end of the arched nut is of a cambered surface structure and makes contact with the cambered surface arched tray, and the other end of the arched nut is of a hexagon nut structure. According to the rotatable direction-changing anchor rod, the arched nut can rotate by a certain angle on the cambered surface tray, an arched space formed by the cambered surface arched tray provides space for the anchor rod body to deviate from the central axis of an anchor eye, and the situation that the anchor rod body is damaged due to the fact that the anchor rod body bears too high shearing stress at the position where the tray makes contact with the arched nut can be effectively avoided. The anchor rod is simple in structure, the stress condition of the anchor rod of a supporting system is improved, the breaking probability of the anchor rod is reduced, and the working life of the anchor rod is prolonged.
Description
Technical field
The utility model relates to a kind of for support engineering anchor poles such as mine, side slope, tunnel and dam bodys.
Background technology
Wales, Britain north in 1872 outdoor shale ore first Application bolt anchorage side slope, within 1912, German Xie Liezi ore deposit adopts bolt support underworkings at first, bolt support technology is the history of existing more than 100 year so far, bolt support with simple in structure, easy construction, cost is low and to features such as engineering adaptability are strong, in civil engineering, Mineral Engineering, be widely applied.In recent years, follow the increase of the coal mining degree of depth, the complicated mechanical environment of deep rock mass excavation in typical high-ground stress, High-geotemperature, high karst water pressure and explosion, mechanical equivalent of light excavation energetic disturbance, deformation of the surrounding rock in tunnel amount is large, and more easily there is absciss layer or the changing of the relative positions in back.The anchor pole pattern that China's coal-mine down-hole is used is a lot, but because its intensity, elongation per unit length are all on the low side, and a lot of anchor rods still adopt traditional structure design, the factor impact such as in actual applications, top board is uneven, aperture surrounding rock failure or roof strata move, to cause anchor hole and top board oblique, top board is uneven, and anchor pole, by being subject to extra shear stress at place, aperture, has a strong impact on the performance of bolt support ability, a lot of anchor poles are disrumpent feelings at place, aperture, easily cause roof accident.Therefore, for deep-well tunnel supporting, with anchor pole, be badly in need of structurally innovating, can suitably alleviate the destruction of anchor pole radial shear stress to anchor pole.
Utility model content
In order to solve the deficiency of existing anchor structure design, the utility model provides a kind of rotatable break-in anchor pole, when country rock is during along normal bolting axis direction generation moderate finite deformation, by the improvement of anchor device structure, the angle between anchor pole center line and the arc tray centerline of cambered surface be can automatically regulate, rock stratum, place, aperture and the shear stress of ground tackle to anchor pole reduced.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: the utility model provides a kind of rotatable break-in anchor pole, anchor bar body, the arc pallet of cambered surface, arc nut, is characterized in that: in the middle of the arc pallet of cambered surface, arc nut, be provided with through hole, anchor bar body passes along through hole.
The arc pallet of described cambered surface center is provided with through hole, and integral body is square, and its cross section is arc, and pallet center arranges globoidal structure.
Described arc nut one end is made as cambered surface and contacts with arc pallet center cambered surface, and the other end is six nut structures.
The utility model advantage and beneficial effect are: rotatable break-in anchor structure is reasonable in design, when being moved or when back nearly horizontal direction occurs moves along anchor pole axis vertical direction by supporting country rock, arc nut can rotate a certain angle on the arc pallet of cambered surface, automatically regulate and reduce the angle between anchor pole center line and the arc tray centerline of cambered surface, avoid anchor pole to be subject to too high shear stress and breakage at pallet and arc nut contact surface place, extend the working life of anchor pole, improved the utilization rate of anchor pole.Therefore, the utility model provides a kind of rotatable break-in anchor pole, and the safety factor of anchor pole in support system is improved.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of rotatable break-in anchor pole of the utility model.
Fig. 2 is the utility model arc nut mounting structure schematic diagram.
Fig. 3 is the structural representation of the arc pallet of the utility model cambered surface.
Fig. 4 is the utility model arc nut rotation schematic diagram.
The specific embodiment
For further understanding summary of the invention, the feature of a kind of rotatable break-in anchor pole of the utility model, below in conjunction with concrete case study on implementation, the utility model is further described.
As shown in Figure 1, a kind of rotatable break-in anchor pole of the present utility model, comprises slip circle facebow shape pallet 1, arc nut 2, anchor bar body 3; Described anchor bar body 3 surfaces arrange spiral bar; Arc pallet 1 integral body of described cambered surface is square, its cross section is arc, and pallet center arranges globoidal structure, as shown in Figure 3, the arc space that the arc pallet of cambered surface forms provides the space of departing from anchor hole central axis for anchor bar body, and arc nut can rotate to an angle on cambered surface pallet; Described arc nut 2 one end are globoidal structure, contact with arc pallet 1 cambered surface of cambered surface, and the other end is hex nut structure.
The implementation case and conventional anchor pole mounting means are similar, when being moved or when back nearly horizontal direction occurs moves along anchor pole 3 vertical direction by supporting country rock, arc nut 2 can rotate a certain angle on the arc pallet 1 of cambered surface, automatically regulate and reduce the angle (as shown in Figure 4) between anchor pole 3 center lines and arc pallet 1 center line of cambered surface, avoid anchor pole 3 to be subject to too high shear stress and breakage at pallet and anchor ring contact surface place, extend the working life of anchor pole, improved anchor pole utilization rate.
Claims (3)
1. a rotatable break-in anchor pole, comprises anchor bar body, the arc pallet of cambered surface, arc nut, it is characterized in that: in the middle of the arc pallet of cambered surface, arc nut, be provided with through hole, anchor bar body passes along through hole.
2. a kind of rotatable break-in anchor pole according to claim 1, is characterized in that: the arc pallet of described cambered surface center is provided with through hole, and integral body is square, and its cross section is arc, and pallet center arranges globoidal structure.
3. according to claim 1 rotatable break-in anchor pole, it is characterized in that: described arc nut one end is made as cambered surface, contact with the arc pallet of cambered surface center cambered surface, the other end is six nut structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320611591.7U CN203515627U (en) | 2013-10-02 | 2013-10-02 | Rotatable direction-changing anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320611591.7U CN203515627U (en) | 2013-10-02 | 2013-10-02 | Rotatable direction-changing anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203515627U true CN203515627U (en) | 2014-04-02 |
Family
ID=50374572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320611591.7U Expired - Fee Related CN203515627U (en) | 2013-10-02 | 2013-10-02 | Rotatable direction-changing anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203515627U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798141A (en) * | 2019-01-25 | 2019-05-24 | 武汉科技大学 | A kind of inclined-plane anchor rod pallet board of adjustable angle |
-
2013
- 2013-10-02 CN CN201320611591.7U patent/CN203515627U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798141A (en) * | 2019-01-25 | 2019-05-24 | 武汉科技大学 | A kind of inclined-plane anchor rod pallet board of adjustable angle |
| CN109798141B (en) * | 2019-01-25 | 2024-01-09 | 武汉科技大学 | Angle-adjustable inclined plane anchor rod tray |
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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: 20140402 Termination date: 20151002 |
|
| EXPY | Termination of patent right or utility model |