CN207673688U - A kind of inverted-supporting type self undercut anchor - Google Patents
A kind of inverted-supporting type self undercut anchor Download PDFInfo
- Publication number
- CN207673688U CN207673688U CN201721484184.9U CN201721484184U CN207673688U CN 207673688 U CN207673688 U CN 207673688U CN 201721484184 U CN201721484184 U CN 201721484184U CN 207673688 U CN207673688 U CN 207673688U
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- China
- Prior art keywords
- screw rod
- cutting
- inverted
- bottom set
- cut
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Abstract
The utility model is related to a kind of inverted-supporting type self undercut anchors, including screw rod, nut is covered with bottom is cut, the screw rod is special spiral rod, the upper end of the screw rod is provided with fastening thread, the tapered shape in lower end of the screw rod, it is provided with external connection screw at the cylindrical section of screw rod lower end, the nut is detachably connected to the upper end of screw rod, it is additionally provided with gasket between the nut and screw rod, the threaded hole to match with screw rod lower end external connection screw is offered in the lower end for cutting bottom set, the bottom set of cutting is provided with cutting tip, it is inlaid with carbide-tipped cutter bit in the shape of a spiral on the cutting tip.The design is connect with screw rod using thread forms by making to cut bottom set, can be transmitted to the rotation torque of installation tool well and be cut bottom and put on, and expands that cut effect more preferable.
Description
Technical field
The utility model is related to technical field of buildings, especially a kind of inverted-supporting type self undercut anchor.
Background technology
Anchor bolt is a kind of novel metal fastener material, can be used for rear in various curtain walls, marble dry hanging construction plus
Embedded part is installed, it can also be used to which equipment is installed, highway, Bridge guardrail installation；The occasions such as concrete structure reinforcement.
Self undercut anchor also known as from reaming anchor bolt, be it is a kind of with expansion sleeve without swelling stress bolt, pass through application
Certain torque, the pin key on expansion sleeve occur protrusion and open, it is made to cut base material with installing after hole wall mutually squeezes.At present
Self undercut anchor in the market often has following shortcoming：1, it needs to install using casing, cost is higher；2, it constructs
It is of high cost.In addition, existing self undercut anchor is typically all positive locking, locking effect is poor.
Invention content
The utility model technical issues that need to address are to provide a kind of inverted-supporting type self undercut anchor that locking effect is good.
In order to solve the above technical problems, the structure of the utility model includes
Screw rod, the screw rod are special spiral rod, and the upper end of the screw rod is provided with fastening thread, the screw rod
The tapered shape in lower end is provided with external connection screw at the cylindrical section of screw rod lower end,
Nut, the nut are detachably connected to the upper end of screw rod, pad is additionally provided between the nut and screw rod
Piece,
Bottom set is cut, the threaded hole to match with screw rod lower end external connection screw, institute are offered in the lower end for cutting bottom set
The bottom set of cutting stated is provided with cutting tip, and carbide-tipped cutter bit is inlaid in the shape of a spiral on the cutting tip.
Further：The upper end of the screw rod opens up jagged.
Further：The bottom of cutting puts on cutting tip there are six settings.
Further：Described cutting in the set of bottom is additionally provided with NOL ring.
With the above structure, the utility model inverted-supporting type self undercut anchor has the following advantages for self undercut anchor：(1) pacifying
Anchor foundation is voluntarily cut during dress, is not required to special reamer and is carried out reaming, installation process is succinctly, conveniently；(2) the utility model
Bottom hole can be cut into during cutting bottom and covering cutting blade dilatancy and be matched with blade by inverted-supporting type self undercut anchor
Shape, expansion cut precision higher, anchor bolt locking effect is more preferable；(3) the utility model inverted-supporting type self undercut anchor is inverted-supporting type anchor bolt, i.e.,
The angle for expanding cutting edge and the outside axis of screw rod is acute angle, and the extruding force completely between cutting blade and anchor foundation is locked
Tightly, in the past by anchor bolt compared with the anchor bolt that frictional force between anchor foundation is locked, inverted-supporting type anchor bolt locking effect is more preferable, degree of safety
Higher；(4) previous anchor bolt screw rod is thinner, and the novel inverted-supporting type self undercut anchor uses special spiral rod, by previous screw rod
It is combined into one with set, considerably increases the intensity of screw rod；(5) it cuts bottom set with special spiral rod to couple with thread forms, can will install
The rotation torque of tool is transmitted to well to be cut bottom and puts on, and it is more preferable that effect is cut in expansion.
Description of the drawings
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of screw rod.
Fig. 3 is the structural schematic diagram for cutting bottom set.
Specific implementation mode
A kind of inverted-supporting type self undercut anchor as shown in Figure 1, Figure 2 and Figure 3, including screw rod 1, nut 3 and cut bottom set 2, institute
The screw rod 1 stated is special spiral rod, and the upper end 1-1 of the screw rod 1 is provided with fastening thread, and the lower end 1-2 of the screw rod 1 is in
Cone-shaped is provided with external connection screw at the cylindrical section of 1 lower end 1-2 of screw rod, and the nut 3 is detachably connected to screw rod 1
Upper end is additionally provided with gasket 4, is offered and 1 lower end of screw rod in the lower end for cutting bottom set 2 between the nut 3 and screw rod 1
The threaded hole that external connection screw matches, the bottom set 2 of cutting are provided on cutting tip 2-1, the cutting tip 2-1 in spiral shell
Rotation shape is inlaid with carbide-tipped cutter bit.Screw rod upper end in the design is machined with fastening thread, to couple fastening nut, pad
Piece, lower end using conical design to make to cut bottom set cutting blade expansion, cut bottom set cutting sheet expansion during always with its
Plane-plane contact, while external connection screw is processed in lower end cylindrical section, cut anchoring base to be cut by bottom set rotates by torque drive
Plinth, the screw thread for cutting bottom set lower end endoporus are matched with screw rod lower end, cut bottom set rotation by the rotation drive of special spiral rod, in turn
Anchor foundation is cut, at the same time cutting blade expands, and anchor bolt is thoroughly embedded in anchor foundation after fastening to a certain extent, reaches anchor
Gu purpose.
The upper end of screw rod 1 as shown in Figure 2 opens up jagged 1-3, it can be driven to be rotated by installation tool.
It is as shown in Figure 3 to cut on bottom set 2 setting there are six cutting tip 2-1, it is inlaid in the shape of a spiral on each blade hard
Matter alloy blade for cutting anchor foundation during expansion piece expands, and then locks anchor bolt.
Cutting in bottom set 2 in the design is additionally provided with NOL ring, and can reduce cutting blade using NOL ring anchors in cutting
Stress in elementary process, to prevent cutting blade to be broken in cutting process.
The design has the beneficial effect that in summary：(1) the utility model inverted-supporting type self undercut anchor is self undercut anchor, is being pacified
Anchor foundation is voluntarily cut during dress, is not required to special reamer and is carried out reaming, installation process is succinctly, conveniently；(2) the utility model
Bottom hole can be cut into during cutting bottom and covering cutting blade dilatancy and be matched with blade by inverted-supporting type self undercut anchor
Shape, expansion cut precision higher, anchor bolt locking effect is more preferable；(3) the utility model inverted-supporting type self undercut anchor is inverted-supporting type anchor bolt, i.e.,
The angle for expanding cutting edge and the outside axis of screw rod is acute angle, and the extruding force completely between cutting blade and anchor foundation is locked
Tightly, in the past by anchor bolt compared with the anchor bolt that frictional force between anchor foundation is locked, inverted-supporting type anchor bolt locking effect is more preferable, degree of safety
Higher；(4) previous anchor bolt screw rod is thinner, and the novel inverted-supporting type self undercut anchor uses special spiral rod, by previous screw rod
It is combined into one with set, considerably increases the intensity of screw rod；(5) it cuts bottom set with special spiral rod to couple with thread forms, can will install
The rotation torque of tool is transmitted to well to be cut bottom and puts on, and it is more preferable that effect is cut in expansion.
Claims (4)
1. a kind of inverted-supporting type self undercut anchor, it is characterised in that：Including
Screw rod (1), the screw rod (1) are special spiral rod, and the upper end (1-1) of the screw rod (1) is provided with fastening thread, institute
Lower end (1-2) the tapered shape for the screw rod (1) stated is provided with external connection screw at the cylindrical section of screw rod (1) lower end (1-2),
Nut (3), the nut (3) are detachably connected to the upper end of screw rod (1), the nut (3) and screw rod (1) it
Between be additionally provided with gasket (4),
Bottom set (2) is cut, the screw thread to match with screw rod (1) lower end external connection screw is offered in the lower end for cutting bottom set (2)
Hole, the bottom set (2) of cutting are provided with cutting tip (2-1), hard are inlaid in the shape of a spiral on the cutting tip (2-1)
Alloy blade.
2. a kind of inverted-supporting type self undercut anchor according to claim 1, it is characterised in that：The upper end of the screw rod (1)
It opens up jagged (1-3).
3. a kind of inverted-supporting type self undercut anchor according to claim 1, it is characterised in that：Described cutting is set on bottom set (2)
Cutting tip (2-1) there are six setting.
4. a kind of inverted-supporting type self undercut anchor according to claim 1, it is characterised in that：Described cuts in bottom set (2) also
It is provided with NOL ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721484184.9U CN207673688U (en) | 2017-11-09 | 2017-11-09 | A kind of inverted-supporting type self undercut anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721484184.9U CN207673688U (en) | 2017-11-09 | 2017-11-09 | A kind of inverted-supporting type self undercut anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207673688U true CN207673688U (en) | 2018-07-31 |
Family
ID=62964174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721484184.9U Active CN207673688U (en) | 2017-11-09 | 2017-11-09 | A kind of inverted-supporting type self undercut anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207673688U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271356A (en) * | 2020-03-16 | 2020-06-12 | 杨磊 | Reverse expansion bolt |
-
2017
- 2017-11-09 CN CN201721484184.9U patent/CN207673688U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271356A (en) * | 2020-03-16 | 2020-06-12 | 杨磊 | Reverse expansion bolt |
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