CN213897102U - Anti-pulling resistance block suitable for twisted steel anchor rod - Google Patents
Anti-pulling resistance block suitable for twisted steel anchor rod Download PDFInfo
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- CN213897102U CN213897102U CN202022800556.2U CN202022800556U CN213897102U CN 213897102 U CN213897102 U CN 213897102U CN 202022800556 U CN202022800556 U CN 202022800556U CN 213897102 U CN213897102 U CN 213897102U
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Abstract
The utility model particularly relates to an anti-pulling resistance piece that is adapted to twisted steel stock has solved current twisted steel stock and has anchored the segment length and surpass the more wasting of resources, the problem that takes a lot of work and time that leads to of actual need when using. An anti-pulling resistance block suitable for a twisted steel anchor rod comprises a sleeve fixedly sleeved on an anchoring section of the twisted steel anchor rod, wherein the sleeve comprises a straight cylinder body and a conical cylinder body; the cover is equipped with the U-shaped card on the sleeve, and two opening tip of U-shaped card all are provided with the external screw thread, and its two opening tip overlap jointly and be equipped with the upper surface and contradict in the bar of sleeve lateral wall and compress tightly the piece, and the downside that the piece was compressed in the bar is provided with two lock nut who twists soon in the U-shaped card, and two lock nut's upper surface all closely laminates in the bar and compresses tightly the lower surface of piece. The utility model discloses a shorten the purpose of drilling depth and stock anchor length, effectively improved the resistance to plucking between stock and the cement mortar, reduced construction cost for the construction progress.
Description
Technical Field
The utility model relates to a high slope stability protection technical field of stone excavation specifically is an anti-pulling resistance piece that is adapted to twisted steel stock.
Background
With the expansion of construction scale and the progress of civil engineering technology, foundation pits are continuously deepened and steep slopes are continuously increased, and in recent years, a novel supporting and retaining structure adopting anchor rods (or anchor cables) to provide balance force is widely applied, such as an anchor rod retaining wall. At present, the anchoring anti-pulling force of the deformed steel bar is obviously improved compared with that of a common round steel bar, and the deformed steel bar is small and economical after being pulled compared with a steel wire rope, so that the hot-rolled deformed steel bar is generally adopted to be directly used as a material of an anchor rod in anchor rod retaining wall engineering. The twisted steel anchor rod is divided into an anchoring section and a tension transmission section, and the anchoring section is fixedly connected with surrounding rocks in the drill hole by pouring cement mortar into the drill hole.
However, the prior thread steel bar anchor rod has the following problems in application as shown in practice: when its anchor power is not enough or cement mortar intensity is not enough, easily lead to the stock to extract out the inefficacy from cement mortar, consequently the designer is when the design, and the anchor section length of stock often surpasss actual need more, has both increased drilling depth, stock length, cement mortar quantity, takes a lot of work and time again. In view of this, the invention is needed to provide a resistance block for a twisted steel anchor rod, which increases the pulling resistance of the anchor rod, appropriately shortens the length of the anchoring section of the anchor rod, and achieves the purposes of reducing waste (drilling and grouting) and realizing rapid construction.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve present twisted steel stock anchor section length when using and surpass the more wasting of resources, the problem that takes a lot of work and time that leads to of actual need, provide an anti-pulling resistance piece that is adapted to twisted steel stock.
The utility model discloses an adopt following technical scheme to realize:
an anti-pulling resistance block suitable for a deformed steel bar anchor rod comprises a deformed steel bar anchor rod, a steel bar sleeve and a steel bar sleeve, wherein the tail part of the deformed steel bar anchor rod is inserted into surrounding rock; the sleeve comprises a straight cylinder body positioned at the head part and a conical cylinder body which is integrally connected with the straight cylinder body end to end, and the diameter of the head end of the conical cylinder body is smaller than that of the tail end of the conical cylinder body; the sleeve is sleeved with a U-shaped clamp which is located between the straight barrel body and the conical barrel body and has a downward opening, two opening end portions of the U-shaped clamp are provided with external threads, the two opening end portions of the U-shaped clamp are commonly sleeved with a bar-shaped pressing piece, the upper surface of the bar-shaped pressing piece is abutted to the outer side wall of the sleeve, two locking nuts screwed on the U-shaped clamp are arranged on the lower side of the bar-shaped pressing piece, and the upper surfaces of the two locking nuts are tightly attached to the lower surface of the bar-shaped pressing piece.
During construction, firstly, the sleeve is fixedly sleeved on the anchoring section of the threaded steel bar anchor rod; and then, sleeving the U-shaped clamp between the straight barrel and the conical barrel of the sleeve, sleeving the strip-shaped pressing piece at the bottom of the U-shaped clamp, and installing two locking nuts, so that the upper surfaces of the two locking nuts are tightly attached to the lower surface of the strip-shaped pressing piece, thereby completing the installation of the anti-pulling resistance block. In the use, the taper cylinder body has increased the resistance area of this resistance to plucking piece, the resistance to plucking performance of twisted steel stock has been promoted, the firm degree that sleeve and twisted steel stock combine can be increased to U-shaped card and bar pressing member, prevent that the sleeve from taking place to shift, the resistance to plucking performance of twisted steel stock has further been promoted, and then the anchor length of reducible drilling degree of depth and twisted steel stock, the cement mortar quantity has been reduced, the construction progress, overcome current twisted steel stock when using anchor length surpass the actual need more lead to the wasting of resources, the problem that takes a lot of work and time.
The U-shaped clamp is made of a cylindrical rod; the side wall of the sleeve is provided with an annular groove which is positioned between the straight cylinder and the conical cylinder and is matched with the U-shaped clamp in shape; the inner side of the U-shaped card is clamped in the inner cavity of the circular groove.
This structural design has increased U-shaped card and telescopic resistance effect, prevents that the slippage from losing the telescopic effect of fastening in the use of U-shaped card, on the basis of guaranteeing structural reliability, has further promoted the resistance to plucking performance of this resistance to plucking piece.
The inside wall of straight barrel, the inside wall of awl barrel all are provided with spiral helicine bead strip, and the pitch of convex bead strip is unanimous with the pitch of twisted steel stock.
The straight cylinder body is formed by splicing two straight cylinder units which are symmetrically arranged left and right; the cone body is formed by splicing two cone units which are symmetrically arranged left and right, and each cone unit is connected with a straight unit corresponding to the cone unit in front and back into a whole.
This structural design is convenient to be installed the sleeve, has saved the process that the sleeve was twisted from the twisted steel stock bottom, and the simple operation nature when having increased this resistance to plucking piece installation has further accelerated the construction progress.
The upper surface of the strip-shaped pressing piece is provided with an arc-shaped groove matched with the side wall of the sleeve in shape.
The structural design of the arc-shaped groove further improves the abutting performance of the strip-shaped pressing piece.
The sleeve, the U-shaped clamp and the strip-shaped pressing piece are all made of steel.
The utility model has reasonable and reliable structural design, can effectively improve the anti-pulling resistance between the anchor rod and the cement mortar, and has the advantages of quick operation, firm connection and difficult slippage; the drilling depth and the anchoring length of the anchor rod can be shortened, the dosage of cement mortar can be reduced, the labor is saved, and the construction cost is reduced. The method is suitable for protection projects such as deep foundation pit excavation and high slope excavation of stone, and can be popularized and applied in similar projects.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic view of the construction of the sleeve of fig. 1.
In the figure, 1-U-shaped clamp, 2-strip-shaped pressing piece, 3-locking nut, 4-circular groove, 5 a-straight cylinder unit, 5 b-conical cylinder unit and 6-arc groove.
Detailed Description
An anti-pulling resistance block suitable for a deformed steel bar anchor rod comprises a deformed steel bar anchor rod, a steel bar sleeve and a steel bar sleeve, wherein the tail part of the deformed steel bar anchor rod is inserted into surrounding rock; the sleeve comprises a straight cylinder body positioned at the head part and a conical cylinder body which is integrally connected with the straight cylinder body end to end, and the diameter of the head end of the conical cylinder body is smaller than that of the tail end of the conical cylinder body; the cover is equipped with and is located between straight barrel and the awl barrel and the U-shaped card 1 that the opening is down on the sleeve, and two opening tip of U-shaped card 1 all are provided with the external screw thread, and its two opening tip overlap jointly and be equipped with the upper surface and contradict in the bar of sleeve lateral wall and compress tightly piece 2, and the downside that the bar compressed tightly piece 2 is provided with two and twists soon to compress tightly lock nut 3 in U-shaped card 1, and the upper surface of two lock nut 3 all closely laminates in the bar and compresses tightly the lower surface of piece 2.
The U-shaped clamp 1 is made of a cylindrical rod; the side wall of the sleeve is provided with an annular groove 4 which is positioned between the straight cylinder and the conical cylinder and is matched with the U-shaped clamp 1 in shape; the inner side of the U-shaped card 1 is clamped in the inner cavity of the circular groove 4. The inside wall of straight barrel, the inside wall of awl barrel all are provided with spiral helicine bead strip, and the pitch of convex bead strip is unanimous with the pitch of twisted steel stock. The straight cylinder body is formed by splicing two straight cylinder units 5a which are symmetrically arranged left and right; the cone body is formed by splicing two cone units 5b which are symmetrically arranged left and right, and each cone unit 5b is connected with a straight unit 5a corresponding to the cone unit in front and back into a whole. The upper surface of the strip-shaped pressing piece 2 is provided with an arc-shaped groove 6 matched with the side wall of the sleeve in shape. The sleeve, the U-shaped clamp 1 and the strip-shaped pressing piece 2 are all made of steel.
In the specific implementation process, the diameter of the threaded steel bar anchor rod is 20mm or 32 mm; the anchoring section of the twisted steel anchor rod is sleeved with a plurality of the uplift resistance blocks with the space of 1.0-1.5 m.
Claims (6)
1. An anti-pulling resistance block suitable for a deformed steel bar anchor rod comprises a deformed steel bar anchor rod, a steel bar sleeve and a steel bar sleeve, wherein the tail part of the deformed steel bar anchor rod is inserted into surrounding rock; the method is characterized in that: the sleeve comprises a straight cylinder body positioned at the head part and a conical cylinder body which is integrally connected with the straight cylinder body end to end, and the diameter of the head end of the conical cylinder body is smaller than that of the tail end of the conical cylinder body; the sleeve is sleeved with a U-shaped clamp (1) which is located between a straight barrel body and a conical barrel body and has a downward opening, two opening end portions of the U-shaped clamp (1) are provided with external threads, the two opening end portions of the U-shaped clamp are jointly sleeved with a bar-shaped pressing piece (2) with the upper surface abutting against the outer side wall of the sleeve, the lower side of the bar-shaped pressing piece (2) is provided with two locking nuts (3) which are screwed on the U-shaped clamp (1), and the upper surfaces of the two locking nuts (3) are tightly attached to the lower surface of the bar-shaped pressing piece (2).
2. The anti-pulling resistance block adapted to a rebar anchor of claim 1, wherein: the U-shaped clamp (1) is made of a cylindrical rod; the side wall of the sleeve is provided with an annular groove (4) which is positioned between the straight cylinder and the conical cylinder and is matched with the U-shaped clamp (1) in shape; the inner side of the U-shaped card (1) is clamped in the inner cavity of the circular groove (4).
3. The anti-pulling resistance block adapted to a rebar anchor of claim 1, wherein: the inside wall of straight barrel, the inside wall of awl barrel all are provided with spiral helicine bead strip, and the pitch of convex bead strip is unanimous with the pitch of twisted steel stock.
4. The anti-pulling resistance block adapted to a rebar anchor of claim 1, wherein: the straight cylinder body is formed by splicing two straight cylinder units (5 a) which are symmetrically arranged left and right; the cone body is formed by splicing two cone units (5 b) which are symmetrically arranged left and right, and each cone unit (5 b) is connected with a straight unit (5 a) which corresponds to the cone unit in front and back into a whole.
5. The anti-pulling resistance block adapted to a rebar anchor of claim 1, wherein: the upper surface of the strip-shaped pressing piece (2) is provided with an arc-shaped groove (6) matched with the side wall of the sleeve in shape.
6. The anti-pulling resistance block adapted to a rebar anchor of claim 1, wherein: the sleeve, the U-shaped clamp (1) and the strip-shaped pressing piece (2) are all made of steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022800556.2U CN213897102U (en) | 2020-11-28 | 2020-11-28 | Anti-pulling resistance block suitable for twisted steel anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022800556.2U CN213897102U (en) | 2020-11-28 | 2020-11-28 | Anti-pulling resistance block suitable for twisted steel anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213897102U true CN213897102U (en) | 2021-08-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022800556.2U Active CN213897102U (en) | 2020-11-28 | 2020-11-28 | Anti-pulling resistance block suitable for twisted steel anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213897102U (en) |
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2020
- 2020-11-28 CN CN202022800556.2U patent/CN213897102U/en active Active
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