CN216920314U - Self-drilling type prestressed soil nail - Google Patents
Self-drilling type prestressed soil nail Download PDFInfo
- Publication number
- CN216920314U CN216920314U CN202220392094.1U CN202220392094U CN216920314U CN 216920314 U CN216920314 U CN 216920314U CN 202220392094 U CN202220392094 U CN 202220392094U CN 216920314 U CN216920314 U CN 216920314U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- soil nail
- self
- drilling
- cylindrical block
- 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
Links
- 239000002689 soil Substances 0.000 title claims abstract description 32
- 238000005553 drilling Methods 0.000 title claims abstract description 18
- 238000004873 anchoring Methods 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims description 4
- 238000005266 casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a self-drilling type prestressed soil nail, which relates to the technical field of soil nails and comprises a sleeve, wherein a check ring is fixedly connected to the port of the sleeve; a spiral rod is axially arranged in the gap in the sleeve, and a cylindrical block is axially and fixedly connected with the end part of one side of the spiral rod; the outer surface of the cylindrical block is fixedly sleeved with a lantern ring, and the inner wall of the sleeve is provided with an anchoring piece matched with the lantern ring for use. The soil nail main body is formed by the mutually independent sleeve and the screw rod, so that the screw rod can independently and automatically drill conveniently, and the sleeve and the screw rod are used after self drilling, so that the independence and the stability of the self drilling of the soil nail are ensured. By arranging the anchoring piece, the utility model can realize anchoring and fixing of the soil nail in the radial direction after the soil nail is self-drilled, thereby avoiding the soil nail from falling off and improving the anchoring stability of the soil nail.
Description
Technical Field
The utility model relates to the technical field of soil nails, in particular to a self-drilling type prestressed soil nail.
Background
The earth nail is an in-situ reinforcement technology which is based on the principle of a Xinao tunnel method, and is used for arranging reinforcement rod pieces nearly horizontally in a natural side slope or a side slope formed by excavation and a foundation pit in-situ rock-soil body and arranging a concrete surface layer along the slope surface, so that the mechanical property of the whole geotechnical system is improved, and the stability of the side slope and the foundation pit is improved. The soil nails can be considered as small-sized passive bolts "partially resembling full-length bonded bolts".
In the prior art, the soil nails are different from anchor rods, and usually driving nails are adopted, so that the soil nails are inconvenient to self-drill into a side slope, and therefore the soil nails are urgently needed to be changed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems and provides a self-drilling prestressed soil nail.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a self-drilling type prestressed soil nail comprises a sleeve, wherein a check ring is fixedly connected to the port of the sleeve;
a spiral rod is axially arranged in the gap in the sleeve, and a cylindrical block is axially and fixedly connected with the end part of one side of the spiral rod;
the outer surface of the cylindrical block is fixedly sleeved with a lantern ring, and the inner wall of the sleeve is provided with an anchoring piece matched with the lantern ring for use.
Optionally, the screw rod and the cylindrical block are integrally formed and cast.
Optionally, a first pin hole is radially formed in the cylindrical block, two second pin holes are symmetrically formed in the sleeve, and a pin rod is inserted into the first pin hole and the second pin hole together.
Optionally, a nut is axially arranged on one of the second pin holes, and an external bolt matched with the nut is arranged on the pin rod.
Optionally, the solid portion of the anchor is comprised of a wedge, a slider, and a projection;
at least one slot is radially arranged on the sleeve, the wedge block is fixedly connected with the sliding block and the protrusion, the protrusion is of a hemispherical structure, a sliding groove is arranged on the inner wall of the slot, and the sliding block is slidably connected to the sliding groove.
Optionally, the number of the anchors is four, and the anchors are arranged on the sleeve in a cross shape.
Compared with the prior art, the utility model has the following advantages:
the soil nail main body is formed by the mutually independent sleeve and the screw rod, so that the screw rod can independently and automatically drill conveniently, and the sleeve and the screw rod are used after self drilling, so that the independence and the stability of the self drilling of the soil nail are ensured.
By arranging the anchoring piece, the utility model can realize anchoring and fixing of the soil nail in the radial direction after the soil nail is self-drilled, thereby avoiding the soil nail from falling off and improving the anchoring stability of the soil nail.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a cross-sectional view of the sleeve of the present invention.
In the figure: the structure comprises a sleeve 1, a screw rod 2, a groove 3, a retainer ring 4, a cylindrical block 5, a lantern ring 6, a wedge-shaped block 7, a sliding block 8, a sliding groove 9, a bulge 10, a pin rod 11, a nut 12, a first pin hole 13 and a second pin hole 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-2, a self-drilling prestressed soil nail comprises a sleeve 1, wherein a retainer ring 4 is fixedly connected to a port of the sleeve 1, and the radial width of the sleeve 1 is increased due to the retainer ring 4, so that subsequent installation is facilitated.
The gap in the casing 1 is axially provided with a screw rod 2, and the screw rod 2 can be connected with a motor so as to be used for drilling.
A cylindrical block 5 is axially fixedly connected to one end of the screw rod 2, the cylindrical block 5 serving to provide a base for the collar 6 and the anchor assembly to be mounted and engaged.
The hob 2 and the cylinder block 5 are formed by integral forming casting, and the integral forming casting has more excellent mechanical properties and avoids breakage after anchoring.
A first pin hole 13 is formed in the cylindrical block 5 in the radial direction, two second pin holes 14 are symmetrically formed in the sleeve 1, and the pin rod 11 is inserted into the first pin hole 13 and the second pin holes 14 together. The first pin hole 13, the second pin hole 14 and the pin rod 11 are matched to fix the screw rod 2 and the telescopic rod 1 together after the screw rod 2 is drilled.
The nut 12 is axially arranged on one of the second pin holes 14, the pin rod 11 is provided with an external bolt matched with the nut 12 for use, and the nut 12 is matched with the external thread, so that the pin rod 11 can be fixed more stably, and meanwhile, the installation and the disassembly are convenient.
The outer surface of the cylindrical block 5 is fixedly sleeved with a lantern ring 6, and the inner wall of the sleeve 1 is provided with an anchoring piece matched with the lantern ring 6 for use.
The solid part of the anchor is composed of a wedge block 7, a sliding block 8 and a bulge 10, and the solid part is arranged as follows:
at least one slot 3 (not circular hole shape in the figure, also can be rectangle) has radially been seted up on sleeve pipe 1, wedge 7 and slider 8 and protruding 10 fixed connection, and protruding 10 adopts hemispherical structure, has seted up spout 9 on the inner wall of slot 3, and slider 8 sliding connection is on spout 9.
After the screw rod 2 changes the hole, promote cylinder piece 5, lantern ring 6 on the cylinder piece 5 and protruding 10 contact drive protruding 10 motion, protruding 10 drives wedge 7 lateral movement to play the effect of the radial anchoring of sleeve pipe 1. The slide block 8 and the slide groove 9 are arranged such that the wedge block 7 can only move linearly, and simultaneously, the falling-off of the wedge block is avoided.
In the present embodiment, the number of the anchors is four, and the anchors are disposed on the casing 1 in a cross shape, so that the cost is increased when the number of the anchors is too large, the anchoring effect is not good when the number of the anchors is too small, and the four anchors can play a role of more stable anchoring.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. The self-drilling type prestressed soil nail is characterized by comprising a sleeve (1), wherein a check ring (4) is fixedly connected to a port of the sleeve (1);
a spiral rod (2) is axially arranged in a gap in the sleeve (1), and a cylindrical block (5) is axially and fixedly connected with the end part of one side of the spiral rod (2);
the outer surface of the cylindrical block (5) is fixedly sleeved with a lantern ring (6), and the inner wall of the sleeve (1) is provided with an anchoring piece matched with the lantern ring (6) for use.
2. A self-drilling prestressed soil nail as recited in claim 1, characterized in that said screw shank (2) and said cylindrical block (5) are cast in one piece.
3. The self-drilling prestressed soil nail as recited in claim 1, characterized in that a first pin hole (13) is radially formed on the cylindrical block (5), two second pin holes (14) are symmetrically formed on the sleeve (1), and a pin rod (11) is jointly inserted into the first pin hole (13) and the second pin hole (14).
4. A self-drilling prestressed soil nail as recited in claim 3, characterized in that a nut (12) is axially disposed on one of said second pin holes (14), and said pin shaft (11) is provided with an external bolt cooperating with said nut (12).
5. A self-drilling prestressed soil nail according to claim 1, wherein the solid portion of said anchor is composed of a wedge (7), a slide (8) and a projection (10);
at least one fluting (3) has radially been seted up on sleeve pipe (1), wedge (7) and slider (8) and protruding (10) fixed connection, protruding (10) adopt hemispherical structure, spout (9) have been seted up on the inner wall of fluting (3), slider (8) sliding connection is on spout (9).
6. A self-drilling prestressed soil nail according to claim 5, wherein said anchors are four in number and are disposed on the casing (1) in a cross-shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220392094.1U CN216920314U (en) | 2022-02-24 | 2022-02-24 | Self-drilling type prestressed soil nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220392094.1U CN216920314U (en) | 2022-02-24 | 2022-02-24 | Self-drilling type prestressed soil nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216920314U true CN216920314U (en) | 2022-07-08 |
Family
ID=82266281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220392094.1U Expired - Fee Related CN216920314U (en) | 2022-02-24 | 2022-02-24 | Self-drilling type prestressed soil nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216920314U (en) |
-
2022
- 2022-02-24 CN CN202220392094.1U patent/CN216920314U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220708 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |