CN2388349Y - Screw internal expansion anchoring-bolt - Google Patents
Screw internal expansion anchoring-bolt Download PDFInfo
- Publication number
- CN2388349Y CN2388349Y CN 99224426 CN99224426U CN2388349Y CN 2388349 Y CN2388349 Y CN 2388349Y CN 99224426 CN99224426 CN 99224426 CN 99224426 U CN99224426 U CN 99224426U CN 2388349 Y CN2388349 Y CN 2388349Y
- Authority
- CN
- China
- Prior art keywords
- anchorage head
- rod
- head pipe
- millimeters
- anchoring head
- 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
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Abstract
The utility model relates to a spiral inner expansion type anchor rod, which is composed of a rod body that is made of ellipse rod-shaped steel materials, and a plastic anchoring head, which are connected together, wherein, one end of the rod body is provided with taper screw threads, and the other end of the rod body is a hexagon cap or screw threads; the anchoring head is a plastic circular tube, of which the outer surface is provided with a ripple-shaped pattern bulge or a screw thread-shaped pattern bulge. The length of the circular tube of the anchoring head is 150 to 250 millimeters. The inner diameter of the circular tube of the anchoring head is smaller than the diameter of the rod body. The tube walls on both ends of the circular tube of the anchoring head are provided with two open seams along an axial direction of the anchoring head. The plane surfaces, on which the open seams are arranged, are perpendicular mutually. A pointed end part of the taper screw threads of the rod body can be screwed into the circular tube of the anchoring head. The spiral inner expansion type anchor rod has the advantages of simple structure, low cost, convenient construction, and strong anchoring force.
Description
The utility model relates to a kind of underworkings or construction of tunnel rock mass reinforcing anchor pole.
In the prior art, the expansion sleeve bolt that underworkings or construction of tunnel rock mass reinforcing are used has the body of rod and anchorage head, the body of rod is the threaded round bar in two ends that steel are made, anchorage head is made up of two parts, a part is the bloated shell of tubular that there are corrugated projection or shape of threads projection decorative pattern in the surface, the interior interior pipe of shell that expands is conical, another part is the bloated wedge of the conically shaped body that matches with pipe in the bloated shell inner conical in the shell that expands, the microcephaly of bloated wedge links to each other with screw thread with the body of rod, on the screw thread of the body of rod other end nut is arranged, during anchoring, there is anchor pole one end of anchorage head to insert in the anchor hole turn nut, the body of rod moves outside anchor hole, the conical wedge that expands can prop up the anchor hole wall to bloated shell pipe distending, produces anchored force.The complex structure of the anchorage head of this anchor pole, processing difficulties, cost is higher.
The purpose of this utility model is in order to overcome above-mentioned deficiency, propose a kind of simple in structure, handling ease, lower-cost spiral internal-expansion type anchor pole.
The utility model is realized with the following method.
Spiral internal-expansion type anchor pole is made up of the body of rod and plastics anchorage head.The body of rod is a circular bar shape, is made by steel, and an end of the body of rod has screw thread, and the end of this thread segment is taper, and the other end of the body of rod is hexagonal cap or screw thread; Anchorage head is the plastic round tube that external surface has corrugated projection or shape of threads projection decorative pattern, the length of anchorage head pipe is 150～300 millimeters, the external diameter of anchorage head pipe matches with the diameter of anchor hole, the external diameter of anchorage head pipe is less than 1～3 millimeter of anchor hole diameter, the internal diameter of anchorage head pipe is less than 4～6 millimeters of body of rod diameters, at the tube wall at the two ends of anchorage head pipe, crack along the twice that axially are evenly equipped with of anchorage head, one end the crack plane at place of plane and the other end at place of cracking is vertical, but the body of rod has in the pipe of threaded portion precession anchorage head of conical section one end.
During use, on underworkings or tunnel wall, get anchor hole earlier, the anchorage head pipe is inserted in the screw thread front end that anchor pole has conical section one end, an end that anchor pole is connected with anchorage head inserts in the anchor hole, allow anchorage head arrive at the bottom of the anchor hole, the rotation body of rod, the end of the body of rod in the hole screws in the plastics anchorage head pipe because of screw thread is arranged, because having, the two ends of anchorage head pipe crack, the anchorage head pipe is easy to distending, and along with the screw-in of anchor pole, the anchorage head plastic pipe is distending gradually, can be tight against the anchor hole wall, reach anchorage effect.
Anchorage head of the present utility model is made of plastic, and it is simple in structure, handling ease, and cost is lower.During anchoring, anchor pole screws in the plastics anchorage head pipe the outside expansion of plastics anchorage head pipe by the guiding of the conical section of anchor pole threaded one end, because plastics have viscoplasticity, when opening, plastics anchoring alliteration can make the firm earth anchor of anchor pole in anchor hole, thereby anchored force be strong with the warpage of anchor hole wall.
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is the schematic diagram of spiral internal-expansion type anchor pole,
Fig. 2 is the schematic diagram of another kind of spiral internal-expansion type anchor pole.
Among Fig. 1, spiral internal-expansion type anchor pole has the body of rod 1 and anchorage head 2, the body of rod 1 is the steel round bar, one end of the body of rod is a hexagonal cap 3, the other end is a screw thread 4, the front end of screw thread 4 is conical sections 5, anchorage head 2 is that plastics are made, anchorage head 2 is plastic round tube that appearance has corrugated projection or shape of threads projection decorative pattern, the length of anchorage head pipe is 200 millimeters, the external diameter of anchorage head pipe matches with the diameter of anchor hole, the external diameter of anchorage head pipe is less than 2 millimeters of anchor hole diameters, and the internal diameter of anchorage head pipe is less than 5 millimeters of body of rod diameters, for making anchorage head 2 easy distendings, at the two ends of anchorage head pipe tube wall, the twice that axially are evenly equipped with along anchorage head crack 21, and the first end of anchoring the crack plane at place of plane and the other end at place of cracking is vertical.
Among Fig. 2, another kind of spiral internal-expansion type anchor pole has the body of rod 6 and the anchorage head 2 identical with anchor pole among Fig. 1, and an end of the body of rod 6 is the screw threads 7 that have conical section, and the other end has screw thread 8, is furnished with nut 9 on the screw thread 8.
Claims (2)
1. spiral internal-expansion type anchor pole, include the anchorage head that the circular bar shape body of rod that steel make and external surface have corrugated projection or shape of threads projection decorative pattern, it is characterized in that: an end of the body of rod has screw thread, the end of this thread segment is taper, the other end of the body of rod is hexagonal cap or screw thread, anchorage head is a tubular, anchorage head is that plastics are made, the length of anchorage head pipe is 150～300 millimeters, the external diameter of anchorage head pipe is less than 1～3 millimeter of anchor hole diameter, the internal diameter of anchorage head pipe is less than 4～6 millimeters of body of rod diameters, tube wall at the two ends of anchorage head pipe, the twice that axially are evenly equipped with along anchorage head are cracked, and an end the crack plane at place of plane and the other end at place of cracking is vertical.
2. by the described spiral internal-expansion type of claim 1 anchor pole, it is characterized in that: the length of described anchorage head pipe is 200 millimeters, and the external diameter of anchorage head pipe is less than 2 millimeters of anchor hole diameters, and the internal diameter of anchorage head pipe is less than 5 millimeters of body of rod diameters,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99224426 CN2388349Y (en) | 1999-07-12 | 1999-07-12 | Screw internal expansion anchoring-bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99224426 CN2388349Y (en) | 1999-07-12 | 1999-07-12 | Screw internal expansion anchoring-bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2388349Y true CN2388349Y (en) | 2000-07-19 |
Family
ID=34014475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99224426 Expired - Fee Related CN2388349Y (en) | 1999-07-12 | 1999-07-12 | Screw internal expansion anchoring-bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2388349Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643200A (en) * | 2018-03-28 | 2018-10-12 | 衢州学院 | Protective device for unsaturation red clay side slope |
| CN109973131A (en) * | 2019-02-22 | 2019-07-05 | 山东科技大学 | A kind of prestressed anchor and test method for simulation laboratory test |
| CN111705794A (en) * | 2020-06-28 | 2020-09-25 | 江阴职业技术学院 | Anchor rod resistance increasing device and construction method thereof |
-
1999
- 1999-07-12 CN CN 99224426 patent/CN2388349Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643200A (en) * | 2018-03-28 | 2018-10-12 | 衢州学院 | Protective device for unsaturation red clay side slope |
| CN109973131A (en) * | 2019-02-22 | 2019-07-05 | 山东科技大学 | A kind of prestressed anchor and test method for simulation laboratory test |
| CN111705794A (en) * | 2020-06-28 | 2020-09-25 | 江阴职业技术学院 | Anchor rod resistance increasing device and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |