CN216339505U - Expansion type anchor head structure capable of being quickly tensioned and locked - Google Patents
Expansion type anchor head structure capable of being quickly tensioned and locked Download PDFInfo
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- CN216339505U CN216339505U CN202122368747.0U CN202122368747U CN216339505U CN 216339505 U CN216339505 U CN 216339505U CN 202122368747 U CN202122368747 U CN 202122368747U CN 216339505 U CN216339505 U CN 216339505U
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Abstract
The utility model belongs to the technical field of anchor heads of anchor cables and anchor rods, discloses an expansion type anchor head structure capable of being tensioned and locked quickly, and aims to solve the problems that the pulling resistance is poor and the construction cost is high due to the fact that the bottoms of the anchor cables and the anchor rods cannot be fastened. The utility model comprises an impact head, wherein one end of the impact head is provided with a tip, the other end of the impact head is provided with a connecting rod, an annular groove is formed on the outer circumference of the connecting rod, a steel sleeve is sleeved on the periphery of the annular groove, the steel sleeve comprises a fixing ring, the fixing ring is connected with a plurality of fixing strips, one side of the connecting rod, which faces the free ends of the fixing strips, is provided with a guide part, the middle parts of the impact head and the connecting rod are communicated and sleeved with a grouting pipe, one end of the grouting pipe penetrates through the tip of the impact head, and the other end of the grouting pipe is connected with an anchor cable or an anchor rod. The utility model can improve the construction efficiency and the bearing capacity.
Description
Technical Field
The utility model belongs to the technical field of anchor heads of anchor cables and anchor rods, and particularly relates to an expansion type anchor head structure capable of being quickly tensioned and locked.
Background
Anchor cables and anchor rods are generally fastened to concrete by using anchor heads or clamps for the outer portions (portions extending out of anchor holes) of the anchor cables and anchor rods during construction, and the bottom portions (i.e., the bottom portions of the anchor cables and anchor rods located in the anchor holes) of the anchor cables and anchor rods are generally integrated with a bearing layer (soil or rock) through poured concrete, which has the following problems in use:
1. the anchor cable and the anchor rod are limited in anti-pulling capacity only by forming a whole with the bearing layer by virtue of the adhesive force between the anchor cable and the concrete and the adhesive force between the anchor rod and the concrete, and in order to meet the anti-pulling requirement, the anchor hole needs to be arranged deeper, so that the construction cost is high;
2. when the anchor cable is used, the anchor cable still cannot be in a linear state although the anchor cable has certain gravity for the steel strand, so that the waste of the anchor cable is caused, and most importantly, the application of subsequent prestress is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides an expansion type anchor head structure capable of being quickly tensioned and locked, aiming at solving the problems of poor anti-pulling capacity and high construction cost caused by the fact that the bottoms of an anchor cable and an anchor rod cannot be fastened, and the expansion type anchor head structure can be improved on the premise of not increasing the depth of an anchor hole.
In order to solve the technical problem, the technical scheme adopted by the utility model is as follows:
an expansion type anchor head structure capable of being tensioned and locked quickly is characterized by comprising an impact head, wherein one end of the impact head is provided with a tip used for impacting a soil body or a rock body, the other end of the impact head is provided with a connecting rod, an annular groove is formed on the outer circumference of the connecting rod, the periphery of the annular groove is provided with a steel sleeve, the steel sleeve comprises a fixing ring, the fixing ring is connected with a plurality of fixing strips arranged along the length direction of the anchor hole, one end of the fixing strip is fixed on the fixing ring, the other end of the fixing strip is a free end, one side of the connecting rod facing the free end of the fixing strip is provided with a guide part, the middle parts of the impact head and the connecting rod are communicated and sleeved with a grouting pipe arranged along the length direction of the anchor hole, one end of the grouting pipe penetrates through the tip end of the impact head, and the other end of the grouting pipe extends out of the connecting rod and is used for being fixedly connected with the anchor cable or the anchor rod.
In some embodiments, the retaining ring is flared and an outer diameter of the retaining ring toward the impact head end is less than an outer diameter of the retaining ring away from the impact head end.
In some embodiments, the fixing ring is connected with a plurality of barbs, so that when the anchor cable or the anchor rod is tensioned, the impact head moves towards the steel casing pipe and the barbs can extend into or abut against the soil body or the rock body.
Compared with the prior art, the utility model has the following beneficial effects:
when the expansion type anchor head structure capable of being tensioned and locked quickly is used, when an anchor hole is drilled to a designed elevation, an impact head (a steel sleeve is sleeved in an annular groove of a connecting rod) is placed into the anchor hole, the impact head (comprising the connecting rod and the steel sleeve together) is continuously hammered downwards into a soil body or a rock body in an impact or hammering mode until the impact head (comprising the connecting rod) does not occupy the position of the anchor hole, then an anchor cable or an anchor rod (namely the grouting pipe is connected with the anchor cable or the anchor rod) with a grouting pipe is tensioned outwards, the impact head moves towards the steel sleeve under the tensioning action (at the moment, the steel sleeve extends into or is propped against the soil body or the rock body under the action of barbs on a horn-shaped fixing ring or a fixing ring), and as the impact head continuously extends into the steel sleeve, a fixing strip on the steel sleeve gradually expands and extends into the soil body or the rock body, thereby locking the impact head. And finally, grouting the blind holes formed by hammering the anchor holes and the impact heads through the grouting pipes to finish the construction process.
According to the structural design, on one hand, the bottom of the anchor cable or the anchor rod can be quickly locked and tensioned through the structures of the impact head, the steel casing pipe and the connecting rod, prestress can be applied after the anchor cable or the anchor rod is locked, and then cement paste is injected, so that compared with the existing mode of firstly pouring cement paste and then tensioning (tensioning when the cement paste is not completely solidified), the construction speed and efficiency can be improved, meanwhile, the influence of the anchor cable or the anchor rod on the cement paste which is not completely solidified in the tensioning process is also reduced, the cement paste forming quality is improved, and the bearing capacity of the anchor cable or the anchor rod is improved; on the other hand, the fixing strip of the steel casing is inserted into the soil body or the rock body to form a local enlarged head section, so that the bearing capacity of the anchor cable or the anchor rod is further improved.
After the fixing strip of the steel casing pipe is inserted into a soil body or a rock body in an expansion mode, under the action of the grouting pipe, cement slurry can be injected into a hole formed by impact of the impact head and the annular groove, so that two sides of the fixing strip can be reinforced and protected by the solidified cement slurry, and a section of enlarged head section is formed to improve the bearing capacity.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the present invention, in which the anchor cable or the anchor rod is not yet tensioned, and the fixing strip of the steel casing is in a natural extension state;
fig. 2 is a schematic structural diagram of an embodiment of the present invention, which is a diagram of a state when a fixing bar is inserted into a soil body or a rock body after an anchor cable or an anchor rod is tensioned and cement slurry is injected through a grouting pipe;
FIG. 3 is a schematic structural view of the impact head and connecting rod of the present invention;
FIG. 4 is a schematic structural diagram of a retaining ring according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of another embodiment of a retaining ring of the present invention;
the labels in the figure are: 1. soil body or rock mass, 2, impact head, 3, steel sleeve pipe, 31, solid fixed ring, 32, fixed strip, 33, barb, 4, slip casting pipe, 5, anchor rope or stock, 6, grout, 7, connecting rod, 71, annular groove, 72, guide part.
Detailed Description
The present invention will be further described with reference to the following examples, which are intended to illustrate only some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, other embodiments used by those skilled in the art without any creative effort belong to the protection scope of the present invention.
With reference to fig. 1 to 3, the expansion type anchor head structure for rapid tensioning and locking of the utility model comprises an impact head 2, one end of the impact head 2 is formed with a tip for impacting a soil body or a rock body 1, the other end of the impact head 2 is provided with a connecting rod 7, an annular groove 71 is formed on the outer circumference of the connecting rod 7, a steel casing 3 is arranged on the periphery of the annular groove 71, the steel casing 3 comprises a fixing ring 31, the fixing ring 31 is connected with a plurality of fixing strips 32 arranged along the length direction of an anchor hole, one end of each fixing strip 32 is fixed on the fixing ring 31, the other end of each fixing strip 32 is a free end, one side of the connecting rod 71 facing the free end of the fixing strip 32 is provided with a guide part 72, the middle parts of the impact head 2 and the connecting rod 7 are communicated and sleeved with a grouting pipe 4 arranged along the length direction of the anchor hole, one end of the grouting pipe 4 penetrates through the tip end of the impact head 2, and the other end of the grouting pipe 4 extends out of the connecting rod 7 and is used for being fixedly connected with the anchor cable or the anchor rod 5.
The impact head 2 and the connecting rod 7 are of an integral structure, or the impact head and the connecting rod are connected to form a whole.
When the fixing strip 32 on the steel sleeve 3 is not extruded by the impact head 2, the outer diameter of the fixing strip 32 is matched with the outer diameter of the impact head 2, and the inner diameter of the fixing ring 31 is matched with the outer diameter of the annular groove, so that the steel sleeve 3 can be sleeved at the middle position of the annular groove.
With reference to fig. 4, in some embodiments, the fixing ring 31 is flared, and the outer diameter of the fixing ring 31 towards the end of the impact head 2 is smaller than the outer diameter of the fixing ring 31 away from the end of the impact head 2.
Referring to fig. 5, in some embodiments, a plurality of barbs 33 are connected to the fixing ring 31, so that when the anchor cable or bolt 4 is tensioned, the impact head 2 is inserted to move toward the steel casing 3 and the barbs 32 can extend into or abut against the soil or rock 1. Preferably, the barbs are made of stainless steel, so that the barbs 33 have certain mechanical strength and certain toughness.
When the expansion type anchor head structure capable of being tensioned and locked quickly is used, when an anchor hole is drilled to a designed elevation, an impact head (a steel sleeve is sleeved in an annular groove of a connecting rod) is placed into the anchor hole, the impact head (comprising the connecting rod and the steel sleeve together) is continuously hammered downwards into a soil body or a rock body in an impact or hammering mode until the impact head (comprising the connecting rod) does not occupy the position of the anchor hole, then an anchor cable or an anchor rod (namely the grouting pipe is connected with the anchor cable or the anchor rod) with a grouting pipe is tensioned outwards, the impact head moves towards the steel sleeve under the tensioning action (at the moment, the steel sleeve extends into or is propped against the soil body or the rock body under the action of barbs on a horn-shaped fixing ring or a fixing ring), and as the impact head continuously extends into the steel sleeve, a fixing strip on the steel sleeve gradually expands and extends into the soil body or the rock body, thereby locking the impact head. And finally, grouting the blind holes formed by hammering the anchor holes and the impact heads through the grouting pipes to finish the construction process.
According to the structural design, on one hand, the bottom of the anchor cable or the anchor rod can be quickly locked and tensioned through the structures of the impact head, the steel casing pipe and the connecting rod, prestress can be applied after the anchor cable or the anchor rod is locked, and then cement paste is injected, so that compared with the existing mode of firstly pouring cement paste and then tensioning (tensioning when the cement paste is not completely solidified), the construction speed and efficiency can be improved, meanwhile, the influence of the anchor cable or the anchor rod on the cement paste which is not completely solidified in the tensioning process is also reduced, the cement paste forming quality is improved, and the bearing capacity of the anchor cable or the anchor rod is improved; on the other hand, the fixing strip of the steel casing is inserted into the soil body or the rock body to form a local enlarged head section, so that the bearing capacity of the anchor cable or the anchor rod is further improved.
After the fixing strip of the steel casing pipe is inserted into a soil body or a rock body in an expansion mode, under the action of the grouting pipe, cement slurry can be injected into a hole formed by impact of the impact head and the annular groove, so that two sides of the fixing strip can be reinforced and protected by the solidified cement slurry, and a section of enlarged head section is formed to improve the bearing capacity.
Claims (3)
1. An expansion type anchor head structure capable of being tensioned and locked quickly is characterized by comprising an impact head, one end of the impact head is provided with a tip for impacting soil or rock mass, the other end of the impact head is provided with a connecting rod, an annular groove is formed on the outer circumference of the connecting rod, a steel sleeve is arranged on the periphery of the annular groove, the steel casing comprises a fixing ring, a plurality of fixing strips arranged along the length direction of the anchor hole are connected on the fixing ring, one end of the fixing strip is fixed on the fixing ring, the other end of the fixing strip is a free end, one side of the connecting rod facing the free end of the fixing strip is provided with a guide part, the middle parts of the impact head and the connecting rod are communicated and sleeved with a grouting pipe arranged along the length direction of the anchor hole, one end of the grouting pipe penetrates through the tip end of the impact head, and the other end of the grouting pipe extends out of the connecting rod and is used for being fixedly connected with the anchor cable or the anchor rod.
2. An expanded anchor head configuration for rapid tension locking as claimed in claim 1 wherein said retainer ring is flared and the outer diameter of said retainer ring towards the impact head end is less than the outer diameter of the retainer ring away from the impact head end.
3. An expansion type anchor head structure capable of being rapidly tensioned and locked according to claim 1, wherein a plurality of barbs are connected to the fixing ring, so that when the anchor cable or the anchor rod is tensioned, the impact head insert moves towards the steel casing pipe, and the barbs can extend into or abut against a soil body or a rock body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122368747.0U CN216339505U (en) | 2021-09-29 | 2021-09-29 | Expansion type anchor head structure capable of being quickly tensioned and locked |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122368747.0U CN216339505U (en) | 2021-09-29 | 2021-09-29 | Expansion type anchor head structure capable of being quickly tensioned and locked |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216339505U true CN216339505U (en) | 2022-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122368747.0U Active CN216339505U (en) | 2021-09-29 | 2021-09-29 | Expansion type anchor head structure capable of being quickly tensioned and locked |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216339505U (en) |
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2021
- 2021-09-29 CN CN202122368747.0U patent/CN216339505U/en active Active
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