CN220748308U - Expansion foot locking anchor rod capable of being quickly anchored - Google Patents
Expansion foot locking anchor rod capable of being quickly anchored Download PDFInfo
- Publication number
- CN220748308U CN220748308U CN202322339839.5U CN202322339839U CN220748308U CN 220748308 U CN220748308 U CN 220748308U CN 202322339839 U CN202322339839 U CN 202322339839U CN 220748308 U CN220748308 U CN 220748308U
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- Prior art keywords
- stock
- nut
- sleeve
- sleeve pipe
- anchor rod
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- 238000001125 extrusion Methods 0.000 claims abstract description 4
- 229910003460 diamond Inorganic materials 0.000 claims description 15
- 239000010432 diamond Substances 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model provides an expansion lock foot stock that can anchor fast, includes stock and the sleeve pipe with stock downthehole footpath assorted, stock cartridge is intraductal and the both ends of stock stretch out from the sheathed tube both ends respectively, the both ends of stock all are equipped with the external screw thread, the both ends of stock are threaded connection respectively has first nut and second nut for the sleeve pipe clamp is installed between first nut and second nut, and the external diameter of first nut and second nut is greater than the internal diameter of sleeve pipe, still be equipped with the expansion section on the sleeve pipe, during the sleeve pipe received axial extrusion, the expansion section of sheathed tube forms the deformation section that the external diameter is greater than the sleeve pipe external diameter to expansion deformation extrusion stock hole's inner wall is utilized to the stock of this device, forms frictional force to with the fixed in position of stock, simplify the fixed of stock position, the convenience is to the maintenance of initial stage support overall stability.
Description
Technical Field
The utility model relates to the technical field of tunnel construction, in particular to an expansion foot locking anchor rod capable of being quickly anchored.
Background
The tunnel lock foot anchor rod is an important measure for fixing the primary support steel frame, especially when a plurality of tunnel excavation is adopted, the arch foot is suspended when the earth and stone below the upper arch frame is excavated, and the primary support weight is born by the lock foot anchor rod until the lower arch frame and the upper arch frame are connected to form a whole. The traditional construction method is that an anchor rod hole is drilled first, slurry is filled in the hole, an anchor rod is inserted, and the anchor rod is connected with an arch springing steel frame after the slurry is solidified. However, if grouting in the foot locking anchor rod is not full, the anchor rod and the rock body cannot form a whole, support cannot be provided for primary support, tunnel collapse accidents are most likely to occur, and serious casualties are caused.
Disclosure of Invention
The utility model solves the defects of the prior art and provides the expansion foot locking anchor rod which simplifies the fixing of the anchor rod position and is convenient for maintaining the integral stability of the primary support and can be quickly anchored.
In order to achieve the above purpose, the utility model firstly provides an expansion lock foot anchor rod capable of being quickly anchored, which comprises an anchor rod and a sleeve matched with the inner diameter of an anchor rod hole, wherein the anchor rod is inserted in the sleeve, two ends of the anchor rod respectively extend out of two ends of the sleeve, two ends of the anchor rod are respectively provided with external threads, two ends of the anchor rod are respectively connected with a first nut and a second nut in a threaded manner, so that the sleeve is clamped between the first nut and the second nut, the outer diameters of the first nut and the second nut are larger than the inner diameter of the sleeve, an expansion section is further arranged on the sleeve, and when the sleeve is axially extruded, the expansion section of the sleeve is expanded and deformed to form a deformation section with the outer diameter larger than the outer diameter of the sleeve.
In this embodiment, the one end of stock is the insertion end of inserting the stock hole, and the other end is the reservation end of setting outside the stock hole, the reservation end of stock is last to be equipped with the backing plate, the second nut compresses tightly the backing plate at sheathed tube tip.
In this embodiment, the end of the sleeve adjacent the insertion end of the bolt is 100mm from the expansion section.
In this embodiment, the length of the expansion section is 50mm.
In this embodiment, the expansion section is formed by providing a plurality of diamond through holes on the wall of the sleeve, the longer diagonal of the diamond through holes is matched with the length of the expansion section, the longer diagonal of the diamond through holes is parallel to the axis of the sleeve, the plurality of diamond through holes are distributed along the circumferential direction of the sleeve, and the adjacent diamond through holes are provided with intervals.
In this embodiment, the sleeve is a DN25 steel pipe.
By adopting the structure, when the device is used, the insertion end of the device is inserted into the anchor rod hole, so that the sleeve is completely immersed into the anchor rod hole, then the second nut outside the anchor rod hole is screwed, when the second nut is screwed, the distance between the first nut and the second nut is shortened, the axial compression of the sleeve is realized, at the moment, stress concentration firstly occurs in the expansion section, the expansion section is expanded and deformed to form a deformation section, the diameter of the deformation section is larger than that of the sleeve, the deformation section extrudes the inner wall of the anchor rod hole to form friction force, so that the position of the anchor rod is fixed, and the integral stability of the primary support can be maintained.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic structural view of an expansion section of the present utility model;
wherein: 11. a first nut; 12. a second nut; 2. a sleeve; 21. an expansion section; 22. diamond-shaped through holes; 3. a bolt; 4. a backing plate.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.
Please refer to fig. 1, 2, a but quick anchor's expansion lock foot stock, including stock 3 and with stock 3 hole internal diameter assorted sleeve pipe 2, sleeve pipe 2 adopts the steel pipe of DN25, and stock 3's one end is the inserted end of inserting stock 3 hole, and the other end is the reserved end of setting outside stock 3 holes, stock 3 cartridge in sleeve pipe 2 and stock 3's both ends stretch out from sleeve pipe 2's both ends respectively, stock 3's both ends all are equipped with the external screw thread, stock 3's inserted end threaded connection has first nut 11, sleeve pipe 3's reserved end is gone up the cover and is equipped with backing plate 4, second nut 12 compresses tightly backing plate 4 at sleeve pipe 2's tip, sleeve pipe 2 presss dress between first nut 11 and second nut 12, and the external diameter of first nut 11 and second nut 12 is greater than sleeve pipe 2's internal diameter, sleeve pipe 2 is last still to be equipped with expansion section 21, sleeve pipe 2 receives when axial extrusion, sleeve pipe 2's expansion section 21 to expansion deformation forms the expansion section that the external diameter is greater than sleeve pipe 2's external diameter, sleeve pipe 2 is close to 3's the expansion section 21 mm of inserting end, expansion section length is about 50mm.
The expansion section 21 is formed by arranging a plurality of diamond through holes 22 on the pipe wall of the sleeve 2, the longer diagonal line of the diamond through holes 22 is matched with the length of the expansion section 21, the longer diagonal line of the diamond through holes 22 is parallel to the axis of the sleeve 2, the plurality of diamond through holes 22 are distributed along the circumferential direction of the sleeve 2, and the adjacent diamond through holes 22 are provided with intervals.
The concrete construction process is as follows:
the anchor rod 3 is threaded at two ends, the first nut 11 is installed, the sleeve 2 and the backing plate 4 are machined simultaneously, then the anchor rod 3 provided with the first nut 11 and the sleeve 2 is inserted into an anchor rod 3 hole, then an object needing anchoring such as a tunnel arch is arranged, the reserved end of the anchor rod 3 penetrates through a preset anchoring hole in the tunnel arch, then the backing plate 4 and the second nut 12 are installed on the anchor rod 3, the backing plate 4 is abutted against the tunnel arch, then the second nut 12 is screwed, when the second nut 12 is screwed, the distance between the first nut 11 and the second nut 12 is shortened, axial compression of the sleeve 2 is realized, at this time, stress concentration firstly occurs in an expansion section 21, the expansion section 21 is expanded and deformed to form a deformation section, the diameter of the deformation section is larger than that of the sleeve 2, the deformation section presses the inner wall of the anchor rod 3 hole to form friction force, and therefore the position of the anchor rod 3 is fixed, and the whole stability of the initial support can be maintained.
The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather utilizing equivalent structural changes made in the present utility model description and drawings or directly/indirectly applied to other related technical fields are included in the scope of the present utility model.
Claims (6)
1. An expansion lock foot stock that can anchor fast which characterized in that: including stock and with the downthehole footpath assorted sleeve pipe of stock, stock cartridge is intraductal and the both ends of stock stretch out from the sheathed tube both ends respectively, the both ends of stock all are equipped with the external screw thread, the both ends of stock are threaded connection respectively has first nut and second nut for the sleeve pipe clamp is adorned between first nut and second nut, and the external diameter of first nut and second nut is greater than the internal diameter of sleeve pipe, still be equipped with the expansion section on the sleeve pipe, when the sleeve pipe received axial extrusion, the expansion section of sheathed tube is to the expansion deformation section that the external diameter is greater than the sleeve pipe external diameter.
2. The quick-anchor expandable footlock bolt of claim 1, wherein: one end of the anchor rod is an insertion end inserted into the anchor rod hole, the other end of the anchor rod is a reserved end arranged outside the anchor rod hole, a backing plate is sleeved on the reserved end of the anchor rod, and the backing plate is pressed on the end part of the sleeve by the second nut.
3. A quick-anchor expandable footlock bolt as claimed in claim 2, wherein: the end of the sleeve close to the insertion end of the anchor rod is 100mm away from the expansion section.
4. A quick-anchor expandable footlock bolt as claimed in claim 3, wherein: the length of the expansion section is 50mm.
5. A quick-anchor expandable foot-locking bolt according to any one of claims 1 to 4, wherein: the expansion section is formed by arranging a plurality of diamond through holes on the pipe wall of the sleeve, the longer diagonal of the diamond through holes is matched with the length of the expansion section, the longer diagonal of the diamond through holes is parallel to the axis of the sleeve, the plurality of diamond through holes are distributed along the circumferential direction of the sleeve, and the intervals are arranged between the adjacent diamond through holes.
6. The quick-anchor expandable foot-locking bolt of claim 5, wherein: the sleeve is made of DN25 steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322339839.5U CN220748308U (en) | 2023-08-30 | 2023-08-30 | Expansion foot locking anchor rod capable of being quickly anchored |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322339839.5U CN220748308U (en) | 2023-08-30 | 2023-08-30 | Expansion foot locking anchor rod capable of being quickly anchored |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220748308U true CN220748308U (en) | 2024-04-09 |
Family
ID=90569337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322339839.5U Active CN220748308U (en) | 2023-08-30 | 2023-08-30 | Expansion foot locking anchor rod capable of being quickly anchored |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220748308U (en) |
-
2023
- 2023-08-30 CN CN202322339839.5U patent/CN220748308U/en active Active
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