CN219527641U - Self-locking spiral anchor rod - Google Patents
Self-locking spiral anchor rod Download PDFInfo
- Publication number
- CN219527641U CN219527641U CN202320768026.5U CN202320768026U CN219527641U CN 219527641 U CN219527641 U CN 219527641U CN 202320768026 U CN202320768026 U CN 202320768026U CN 219527641 U CN219527641 U CN 219527641U
- Authority
- CN
- China
- Prior art keywords
- movable rod
- rod piece
- anchor rod
- anchor
- pipe fitting
- 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.)
- Active
Links
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a self-locking spiral anchor rod, which comprises an anchor rod body, an inner spiral pipe fitting and three movable rod pieces comprising a first movable rod piece, a second movable rod piece and a third movable rod piece, wherein the anchor rod body is inserted into the inner spiral pipe fitting, and screw threads are formed between the inner spiral pipe fitting and the inner spiral pipe fitting to enable the anchor rod body to be screwed in or out of the inner spiral pipe fitting, the movable rod piece is arranged on the periphery of the anchor rod body, one end of the first movable rod piece is hinged with the inner spiral pipe fitting, the other end of the first movable rod piece is hinged with one end of the second movable rod piece, the other end of the second movable rod piece is hinged with the third movable rod piece, and the other end of the second movable rod piece is hinged with the anchor rod body. The utility model has the advantages that: the anchor rod is embedded into the soil body by utilizing simple screw thread gradually increasing pressurization to form anchoring, so that drawing resistance is generated, the construction flow and the mortar solidification time are reduced, the construction period is shortened, the anchor rod can be recycled by utilizing reverse rotation after the use is completed, and the waste of materials is reduced.
Description
Technical Field
The utility model relates to the technical field of anchor rods, in particular to a self-locking spiral anchor rod.
Background
In the areas with insufficient anchoring force, such as sandstone soil, block stone soil or sand layer areas, when the conventional anchor rod is adopted for reinforcement, holes collapse in drilling holes are easily caused or the structure of the anchor rod is required to be designed, for example, the anchoring section of the anchor rod is lengthened, so that the construction cost is increased. Based on this, grouting anchors or anchors with open flukes are currently used for construction for such areas.
Grouting anchor rod means that grouting reinforcement is carried out on an anchoring section of the anchor rod after the anchor rod is anchored, so that the anchoring force of the anchor rod is improved. However, in this way, the construction process of grouting and anchoring is complicated, and the grouting operation is required after the anchoring, so that the matched grouting equipment is required to be arranged in a construction site, the setting time of mortar is required to be waited in the construction process, the construction period is long, and the anchor rod is inconvenient to recover, so that the cost is wasted.
The anchor rod with the open flukes is characterized in that after the anchor rod is anchored, the anchor rod is driven to open outwards by driving the outer flukes so as to clamp the soil body, and the anchoring force of the anchor rod is improved. However, at present, common flukes generally adopt claw-shaped structures, after the flukes extend out, the connection between the claw-shaped structures and the anchor rod body is weak, when the anchoring force changes, the weak connection part is easy to break, the flukes are separated from the anchor rod, the effect of the flukes is lost, and the anchoring effect of the anchor rod is not improved. In addition, such anchors are also not easily recoverable.
Disclosure of Invention
According to the defects of the prior art, the utility model provides the self-locking spiral anchor rod, the movable rod piece is opened to form locking when the anchor rod is embedded into soil body in a threaded gradually pressurizing mode, the anchoring effect is realized, the anchor rod can be fully recovered after construction is finished, and the waste of materials is reduced.
The utility model is realized by the following technical scheme:
the utility model provides a from locking-type spiral stock which characterized in that: the novel anchor rod comprises an anchor rod body, an inner spiral pipe fitting and three movable rod pieces including a first movable rod piece, a second movable rod piece and a third movable rod piece, wherein the anchor rod body is inserted into the inner spiral pipe fitting, threaded fit is formed between the inner spiral pipe fitting and the inner spiral pipe fitting, the anchor rod body can be screwed in or out of the inner spiral pipe fitting, the movable rod piece is arranged on the periphery of the anchor rod body, one end of the first movable rod piece is hinged with the inner spiral pipe fitting, the other end of the first movable rod piece is hinged with one end of the second movable rod piece, the other end of the second movable rod piece is hinged with the third movable rod piece, and the other end of the second movable rod piece is hinged with the anchor rod body.
The movable bearing is installed at a certain distance from the anchor rod body to the top anchoring length, and the anchor rod body is fixed with a shaft collar of the movable bearing.
Two or more groups of movable rod pieces are symmetrically arranged around the periphery of the anchor rod at intervals, and each group of movable rod pieces comprises a first movable rod piece, a second movable rod piece and a third movable rod piece.
The inner wall of the inner spiral pipe fitting is provided with an inner thread, and the periphery of a rod body at one end of the anchor rod body is provided with an outer thread matched with the inner thread.
The lengths of the first movable rod piece, the second movable rod piece and the third movable rod piece are different, so that the requirement that the first movable rod piece, the second movable rod piece and the third movable rod piece can be outwards opened under the driving of the anchor rod body is met.
The utility model has the advantages that: the anchor rod is embedded into the soil body by utilizing simple screw thread gradually increasing pressurization to form anchoring, the pulling force is generated, the existing grouting anchoring mode is replaced, the construction flow and the mortar solidification time are reduced, the construction period is shortened, the anchor rod can be recycled by utilizing reverse rotation after the use is completed, the waste of materials is reduced, and the anchor rod can be applied to advanced support of shallow soil stratum.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the structure of the present utility model in a use state;
FIG. 3 is a schematic view of a partial structure of the present utility model;
fig. 4 is a schematic view of a partial structure of the present utility model.
Description of the embodiments
The features of the utility model and other related features are described in further detail below by way of example in conjunction with the following figures to facilitate understanding by those skilled in the art:
as shown in fig. 1-4, the labels 1-6 and a-D are shown as: the first movable rod piece 1, the second movable rod piece 2, the third movable rod piece 3, the inner spiral pipe piece 4, the anchor rod body 5, the fixed shaft 6, the fixed shaft A, the fixed shaft B, the fixed shaft C and the fixed shaft D.
Examples: as shown in fig. 1 to 4, the self-locking type screw bolt in this embodiment includes three components of an inner screw pipe 4, a bolt body 5 and a movable rod.
The diameter of the pipe hole of the inner spiral pipe fitting 4 is matched with the rod diameter of the anchor rod body 5, so that the anchor rod body 5 can be inserted into the inner spiral pipe fitting 4. The inner screw pipe fitting 4 is internally provided with an internal thread, and the periphery of one end of the rod body of the anchor rod body 5 is locally provided with an external thread matched with the internal thread, so that the anchor rod body 5 and the inner screw pipe fitting 4 form threaded matched connection, and the anchor rod body 5 can be screwed in or out of the inner screw pipe fitting 4. In this embodiment, the movable bearing is installed at a position of the anchor rod body 5 with a certain length from the top anchoring length, and the rod member is fixed with the shaft collar of the movable bearing, so that the limit of the anchor rod body 5 during rotation is ensured, and the connection between the anchor rod body 5 and the movable rod member is further realized.
Between the inner spiral tube 4 and the anchor body 5 a movable rod is arranged, which acts as reinforcement for the anchor body 5, which can be opened after the anchor has been drilled into the soil, thus forming a lock. Specifically, the movable rod piece is formed by combining a first movable rod piece 1, a second movable rod piece 2 and a third movable rod piece 3, wherein one end of the first movable rod piece 1 is hinged with the inner spiral pipe fitting 4 through a fixed shaft A, the other end of the first movable rod piece is hinged with the second movable rod piece 2 through a fixed shaft C, the other end of the second movable rod piece 2 is hinged with the third movable rod piece 3 through a fixed shaft D, and the other end of the third movable rod piece 3 is hinged with the anchor rod body 5 through a fixed shaft B.
In use, as shown in comparison with fig. 1 and 2, the anchor body 5 is screwed into the inner spiral pipe 4 gradually, and the distance between the fixed shaft a and the fixed shaft B is reduced gradually, and the movable rod is pressurized at both ends due to the constant total length of the movable rod, so that the movable rod becomes bent. Then, the position of the fixed shaft D is deformed due to the fact that the distance between the fixed shaft D and the center of the movable rod member is relatively short, so that the fixed shaft D is protruded in the outer direction of the anchor body 5, the position of the fixed shaft C is deformed as the distance between the fixed shaft a and the fixed shaft B is gradually shortened, and finally, the protrusion near the fixed shaft B is relatively large, and the opening shape with relatively small protrusion near the fixed shaft a is formed. After the movable rod piece formed by the first movable rod piece 1, the second movable rod piece 2 and the third movable rod piece 3 is opened, the movable rod piece can be firmly embedded into soil body to form locking, so that the anchor rod body 5 realizes the anchoring effect.
In this case, since both ends of the movable rod are firmly connected to the inner screw pipe 4 and the anchor body 5, respectively, it is possible to secure an anchoring force during use. Meanwhile, when the anchor rod body 5 is reversely screwed out of the inner spiral pipe fitting 4 through threads, each movable rod piece is gradually retracted in the opposite opening direction, so that the whole recovery of the anchor rod is realized.
In this embodiment, in order to further improve the anchoring effect of the anchor rod and balance the anchoring force, three groups of movable rods are symmetrically arranged at intervals on the periphery of the anchor rod body 5, each group of movable rods has an included angle of 120 °, and each group of movable rods comprises a first movable rod 1, a second movable rod 2 and a third movable rod 3.
The embodiment comprises the following steps when in construction:
before construction, the anchor rod is assembled, a drilling machine is used for drilling holes, a rod piece is integrally inserted into a bottoming hole, the rod piece is propped against, the anchor rod body 5 is rotated in the threaded direction, the anchor rod body 5 is propped into the inner spiral pipe fitting 4, the movable rod piece is firstly opened at the lower part, then the top part is gradually opened to be opened, finally, the rod piece is embedded into an anchoring soil body to form locking, and an anchoring effect is formed.
The embodiment is implemented in specific manner: the anchor rod body 5 is made of steel bars with the diameter not smaller than 32mm, one end head 50cm is provided with external threads, and a movable bearing is arranged at the position 200cm away from the top anchoring length of the anchor rod body 5. The length of the inner spiral pipe fitting 4 is 51cm, the spiral section is 50cm, and the top is sealed.
The length of the first movable rod piece 1 is 20cm, the length of the second movable rod piece 2 is 200cm, and the length of the third movable rod piece is 30cm.
Although the foregoing embodiments have been described in some detail with reference to the accompanying drawings, it will be appreciated by those skilled in the art that various modifications and changes may be made thereto without departing from the scope of the utility model as defined in the appended claims, and thus are not repeated herein.
Claims (5)
1. The utility model provides a from locking-type spiral stock which characterized in that: the novel anchor rod comprises an anchor rod body, an inner spiral pipe fitting and three movable rod pieces including a first movable rod piece, a second movable rod piece and a third movable rod piece, wherein the anchor rod body is inserted into the inner spiral pipe fitting, threaded fit is formed between the inner spiral pipe fitting and the inner spiral pipe fitting, the anchor rod body can be screwed in or out of the inner spiral pipe fitting, the movable rod piece is arranged on the periphery of the anchor rod body, one end of the first movable rod piece is hinged with the inner spiral pipe fitting, the other end of the first movable rod piece is hinged with one end of the second movable rod piece, the other end of the second movable rod piece is hinged with the third movable rod piece, and the other end of the second movable rod piece is hinged with the anchor rod body.
2. A self locking helical rock bolt according to claim 1, wherein: the movable bearing is installed at a certain distance from the anchor rod body to the top anchoring length, and the anchor rod body is fixed with a shaft collar of the movable bearing.
3. A self locking helical rock bolt according to claim 1, wherein: two or more groups of movable rod pieces are symmetrically arranged around the periphery of the anchor rod at intervals, and each group of movable rod pieces comprises a first movable rod piece, a second movable rod piece and a third movable rod piece.
4. A self locking helical rock bolt according to claim 1, wherein: the inner wall of the inner spiral pipe fitting is provided with an inner thread, and the periphery of a rod body at one end of the anchor rod body is provided with an outer thread matched with the inner thread.
5. A self locking helical rock bolt according to claim 1, wherein: the lengths of the first movable rod piece, the second movable rod piece and the third movable rod piece are different, so that the requirement that the first movable rod piece, the second movable rod piece and the third movable rod piece can be outwards opened under the driving of the anchor rod body is met.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320768026.5U CN219527641U (en) | 2023-04-10 | 2023-04-10 | Self-locking spiral anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320768026.5U CN219527641U (en) | 2023-04-10 | 2023-04-10 | Self-locking spiral anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219527641U true CN219527641U (en) | 2023-08-15 |
Family
ID=87586144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320768026.5U Active CN219527641U (en) | 2023-04-10 | 2023-04-10 | Self-locking spiral anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219527641U (en) |
-
2023
- 2023-04-10 CN CN202320768026.5U patent/CN219527641U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9091167B2 (en) | Self drilling rock bolt | |
| US3962879A (en) | Reinforced pile in earth situs and method of producing same | |
| CN103104270A (en) | Shear type expansion anchor rod and extension application thereof | |
| CN211397620U (en) | Recoverable expanding anchor rod | |
| CN110042835B (en) | Self-drilling and self-anchoring recoverable anchor rod for soil and sand layer and anchoring method thereof | |
| CN109306697A (en) | A kind of shuttle shape contraction type anchor structure and its application method | |
| CN115341540B (en) | Anchoring device for supporting sand pulp side slope and construction method thereof | |
| CN214061602U (en) | Umbrella-shaped body expanding device capable of controlling expansion and contraction through spiral stroke | |
| CN108442386B (en) | Detachable core expansion anchoring structure device and assembly construction method thereof | |
| CN102080377B (en) | Composite anchor rod and guide construction method thereof | |
| CN111412003A (en) | Self-adaptive large-deformation tunnel telescopic grouting anchor rod | |
| CN219527641U (en) | Self-locking spiral anchor rod | |
| CN104632259B (en) | End-head self-expansion enlarging type anchoring method for soft and weak stratum | |
| CN2723681Y (en) | Inner anchor external injection type anchor rod | |
| CN111255493B (en) | Connectable extension anchor rod capable of achieving segmented anchoring and mounting device thereof | |
| CN110206021B (en) | Prestressed light pile for quickly anchoring emergency bridge inhaul cable and construction method | |
| CN105951825B (en) | It is a kind of hollow from base expanding and base expanding crab-bolt and its installation method | |
| JP5020876B2 (en) | Support member and fixing method of the support member | |
| CN217298907U (en) | Reversal anchor rod of twisted umbrella type | |
| CN202989913U (en) | Pointless spiral pile | |
| WO2002075116A1 (en) | A method for stabilization of rock and soil masses, and a rock bolt for practicing the method | |
| AU2007203018A1 (en) | Method of sealing hollow bolts | |
| AU2008235258A1 (en) | Extendable member | |
| CN111058442B (en) | Tensile type anchor suitable for two segmentation echelonment anchor eye | |
| CN105507929A (en) | Anchor cable supporting method of repeatedly applying prestress |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |